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Abstract: In recent years, building information modeling (BIM) has been widely used to create animated simulations for engineering demonstrations. On-site engineers often employ animations generated using a BIM system to explain the current project status to their managers, so that the managers can grasp the actual project status. However, the fidelity ...
Abstract: Using Building Information Modeling (BIM) technology, a unique virtual model of a project can be created, which will allow all parties involved in the design process of project members (owners, architects, engineers, contractors, sub-contractors and suppliers) to collaborate more precisely and more effectively than using traditional processes. The collaboration of ...
Abstract: Proper building maintenance is critical to ensuring the well-being of citizens and sustainable development of the urban environment. For high-rise high-density cities, one challenge to building maintenance concerns the inspection of building exteriors, which has been mostly done manually but is of highly risky, labor-intensive, and error-prone. Unmanned aerial vehicles ...
Abstract: Construction progress monitoring and visualization have recently undergone advanced development. However, the data exchange process between construction offices and jobsites still lacks automation and real-time data records. Furthermore, an information gap between construction offices and jobsite activity persists, and progress inspectors still need to visit jobsites to check progress and ...
Abstract: Lighting performance simulators play an important role in the architectural design process, as it provides the means to address lighting design issues early within the design stage of a construction project life-cycle. Currently, several lighting performance simulators provide support for glare simulation and analysis; however, they are primarily limited to ...
Abstract: Construction, one of the most informationintensive industries, plays a vital role in the prosperity of nations and is expected to grow to new heights. This significant expansion, along with the increased complexity and sophistication of construction projects and rapid advances in emerging technologies, has fueled construction companies' interest in innovation ...
Abstract: Well detailed, informative and accurate work instructions are a necessity to mitigate delays in construction. Today, this is done through a combination of shop drawings, documents, sheets, work pre-planning meetings and onsite verbal work instructions to transfer knowledge and information between all actors. Due to the subjectivity of these methods, ...
Abstract: Embedments (embeds) placed in concrete or masonry structures are used extensively in construction to connect the final product of one trade-contractor's work to another and are therefore, a critical coordination facet for most construction projects. A failure in this coordination usually leads to lost productivity. Therefore, the need to productively ...
Abstract: While the global impact of plastic waste is increasingly concerning, the application of reused materials in the built environment remains little explored. This paper presents research into the reuse of plastic in architecture by means of computational design and robotic fabrication. Design possibilities using reclaimed plastic artefacts were explored by ...
Abstract: In 2018, the United States Department of Transportation Federal Highway Administration reported that Americans traverse over 1,000 miles a month on average. Maintenance of pavement marking conditions is crucial to creating a safe driving environment. Traditionally, pavement markings are assessed periodically through manual road inspectors. This method is time consuming ...
Abstract: A teleoperated hydraulic excavator is introduced to per- form safe and quick restoration work in sites affected by disasters. However, the current efficiency of this system is approximately 40?60%, compared to boarding an actual hy- draulic excavator, because of the communication delay. To reduce this delay, we developed a ...
Abstract: The rotary snow blower vehicle operated for removing accumulated snow on road shoulders must be performed even in the conditions of a poor visibility due to a snowstorm or road markings completely covered by snow. The operators of the vehicle have to pay full attention to avoid contacting road structures ...
Abstract: Although several previous studies have reviewed 3DCPs, they have been based on few cases and do not include the latest 3DCPs. This study analyzed 139 academic papers and 98 types of three-dimensional concrete printers (3DCPs) developed from 1997 to 2020 through a systematic literature review. A chronological distribution analysis showed ...
Abstract: Autonomous road construction offers the possibility to improve the demanding and error-prone process of road compaction. Compaction results and surface coverage are optimized through the coordination of automated tandem rollers. This paper evaluates the impact of different road compaction strategies, ambient influences, and coordination errors on the resulting road. Thereby, ...
Abstract: Bridge designs are typically governed by a voluminous set of requirements in various design standards and codes. The requirements are aimed at ensuring the structural safety against different environmental risks experienced by a bridge facility during its service life. The requirements provided in the bridge design standards are generally prescriptive ...
Abstract: Unmanned construction work is civil engineering work carried out by remotely operating construction machinery located in a caution zone (a zone whose entry is prohibited or restricted), thus enabling the operator to perform remote work from inside the safe area without any need to enter the caution zone. This technology ...
Abstract: Since March 2020, 5G has been commercialized mainly in urban areas in Japan, and 5G communication infrastructure demonstration tests are actively conducted among various industries such as telecommunications carriers and construction industries. The authors installed a portable 5G base station close to tunnel portal in "Subcontracting for research and study of ...
Abstract: We have developed a remote operation support system for underwater excavators and conducted Sea experiments. Underwater excavators have been operated by divers boarding on them. Their main task is levelling rubble mounds of port structures in Okinawa?Japan. However, in recent years, remote control is required due to the decrease in ...
Abstract: The wall of the shield tunnel body is made by assembling panels called segments into a ring shape. For the segment transportation in this site, quick, accurate and safe operation is required in each device mainly using a crane. However, in recent years, it is difficult to secure human resources ...
Abstract: Currently, the high demands and needs to improve productivity and labor-saving in construction industries leads to many automation and mechanization. This report aims to address the shortage of skilled worker in the future as well as improvement of safety, productivity and quality. Comprehensive collection and utilization of information were carried ...
Abstract: Most of the cities road marking inspection is performed manually and considered an ideal candidate for automation because it is a labourintensive process. We propose a solution based on automated quality assessment tool for road marking to detect and qualify road marking characteristics. Our data inventory and data collection approach ...
Abstract: An on-site construction progress monitoring and presentation system is herein developed that overlays the virtual building information model (BIM) onto the real-time scene of the construction site using augmented reality (AR). The system utilizes the novel AR technology of simultaneous localization and mapping (SLAM), which is a real-time positioning technology ...
Abstract: The efficient construction of large industrial plants (e.g. concrete plants, chemical plants) in high quality requires precise planning and execution of the individual logistics and assembly steps. For this purpose, detailed step-by-step instructions should be prepared that can be clearly interpreted and thus implemented by the staff on site carrying ...
Abstract: The rapid growth on the field of project management and building information modelling (BIM) has led not only to the enhancement of architectural/structural design, construction methodology and operation of facilities but also to the generating of the new and exciting applications such as 4D simulations, project scheduling and controlling. 4D ...
Abstract: To support mass customization for industrialized construction, researchers and industry have adopted product configuration strategies. Based on the theory of modularization, pre-defined module libraries can be configured into feasible construction projects. However, the digital representation of configuration knowledge is understudied. Current Building Information Modeling (BIM) product modeling does not enable ...
Abstract: The construction industry suffers from low productivity, and the Building Information Modelling (BIM) has not been successful in enhancing the productivity and the flow of information throughout highly fragmented construction projects. Hence, this study aims to facilitate consistency in information and addresses the current gaps in BIM by applying the ...
Abstract: Individual customer needs and accelerating technological advances in Industry 4.0 are leading to rapid manufacturing changes, thus industrial buildings need to accommodate constantly evolving production processes. The load-bearing structure acts as crucial limiting factor regarding the building's flexibility. As structural performance is highly linked to other design-disciplines, there is a ...
Abstract: Construction safety has been a major area for research for an extensive time as the number of accidents, injuries and deaths has not significantly declined, despite strong implementation of safety laws and major efforts of the construction safety professionals. According to the Ministry of Employment and Labor, Korea (MOEL) [1] ...
Abstract: Enhanced visualisation is one of the low hanging fruits of BIM implementation. It helps in improving clarity in communications and fosters collaboration & coordination of construction projects for efficient delivery. 4D BIM combines the proposed sequence of work in a project with the 3D parametric digital model of the facility ...
Abstract: Information Quality Assessment (IQA) is an important, but often overlooked aspect, of the Building Information Modeling (BIM) process. Models with information quality issues, such as incomplete and incorrect information, may cause rework during the design process if detected early. Otherwise errors may propagate downstream, leading to significant cost consequences to ...
Abstract: The definition of how agreed information deliveries in building projects are achieved and implemented for different objectives and use cases is always a major topic in project management. This procedure is normally specified in accordance with international standards. However, the absence of checklists, guidelines and recommendations for action leads to ...
Abstract: In the last decade, a significant amount of research and development has been conducted at the intersection of Building Information Modelling (BIM) and reality capture data processing, mainly in the two areas often referred to as ?Scanto- BIM' and ?Scan-vs-BIM'. Interestingly, it appears that all these advances have been made ...
Abstract: Global spending on rework in the trillion dollar construction industry is estimated at $570bn of direct costs and $440bn of indirect costs. The cost of rework is on the rise, and the main cause is rooted in quality deviations from construction design. Real-time or even near real-time remote progress monitoring ...
Abstract: The current practice for information sharing with building information modelling (BIM) is a distributed data sharing based on conversions. Conversions are problematic due to data loss, redundancy, and conflicting information. A single data schema used by all applications is a requisite for a conversion-free data collaboration. In the study, a ...
Abstract: The need for efficient computing in construction modelling and analysis workflows often requires making tradeoffs between the inherent advantages and disadvantages of different datatypes being generated and managed. This is notably observed in geometry reconstruction (e.g., scan-to-BIM, reverse engineering, etc.), where a tradeoff often occurs between computational efficiency and the ...
Abstract: The Architecture, Engineering and Construction (AEC) industry is still one of the most hazardous industries in the world. Researchers impute this trend to many factors such as the separation between the phases of safety planning and project execution, implicit safety issues and, most of all, the dynamic and complex nature ...
Abstract: New innovative and digital approaches, in particular digital methods like Building Information Modeling (BIM), are being used more and more in the Architecture, Engineering and Construction (AEC) Sector. However, most of building operation and maintenance processes still follow conventional processes and are hardly supported by digital databases. Within the widespread ...
Abstract: Due to the continuous improvement in data acquisition, storage and evaluation, digital technologies are penetrating ever deeper into the operational business of the construction industry. Modern information and communication systems are at the heart of digital working methods. They encompass the factors - People, Processes and Data -, which are ...
Abstract: Digital twin (DT) is commonly known as a virtual model of a physical object, a process or a system. In order to create DT, the emphasis is on building a Cyber-Physical System (CPS), where information collected from physical processes is used for computation to generate a real-time monitoring cyber model. ...
Abstract: Nowadays, it is ever more common to find mentions in the scientific literature to a "Construction 4.0". Considering, for instance, Offsite Construction, it is clearer how such concept could be realized. Current widespread adoption of BIM helps but is not enough to realize that end, because it is, in general, ...
Abstract: Traditionally, when an engineer wants to use Building Information Model (BIM) on-site to support tasks for construction or maintenance, the common approach is to use a tablet or a notebook to run a BIM viewer, thus requiring manual operation for model manipulation. In addition, the BIM presented through the screen ...
Abstract: Workspaces in a construction project are considered as critical and limited resources. Since the workspace conflicts cause productivity loss and poor quality, construction researchers have been exploring different workspace definitions and solutions to improve the situations. Construction workspace' function can be classified according to the user's needs and characteristics of ...
Abstract: Construction activities require materials or resources to be arranged while planning the route of how these materials or resources can be transported is not a simple process. Traditionally, subcontractors will arrange a daily meeting and negotiate the desired space on site for the next day's resource transporting. However, many of ...
Abstract: The BIM method is perceived as a synonym for the digitalization of the construction industry. The application of this method enables most of all, the consistent and uniform information management and therefore affords a more efficient communication and collaboration environment to all participants in the life cycle of the respective ...
Abstract: Digital Fabrication is an emerging systemic innovation in the architecture, engineering and construction sector. However, the design process for digital fabrication lacks an integrated management process or digital collaboration platform. One reason may be a lack of industry stakeholder needs for such processes and platforms. To explore and facilitate such ...
Abstract: In a centralized air distribution system, the designed ductwork layout impacts the system performance and the construction time and cost. Engineers face various challenges, including spatial limitations, leading them to use assumption-based design methods to balance their design with construction requirements. As a result of this shortcoming, insufficient design details ...
Abstract: Visual facility inspections performed manually are tasks that can be automated. Segmentation of facility image data is one of the automated methods of identifying problems in facilities. However, the machine learning methodology that is mainly used to train the segmentation model requires a large amount of training dataset. Preparing training ...
Abstract: The article is devoted to the problem of improving the reliability and efficiency of the operation of mech-atronic sliding complexes. To solve this problem, a cyber-physical system is proposed that implements the diagnosis and prediction of the technical condition of servo drives. Methods for calculating the current and additional loads ...
Abstract: In Japan, earthmoving workers are aging rapidly, and more than one million skilled workers will retire at once in the near future. Thus, the mass retirement of these skilled technicians could bring a significant drop in production capabilities throughout the earthmoving industry. To solve this problem, it is expected that ...
Abstract: The McKinsey Global Institute's digitisation index ranks construction amongst the least digitised sectors globally. This translates to a relatively slow rate of labour-productivity growth which, according to McKinsey, costs the global economy US$1.6 trillion per year. One area ripe for improvement is validation of final components on construction sites. This ...
Abstract: One of the problems in the practical use of 3D printers using cement-based materials is how to withstand the tensile force. In general, cement-based materials can withstand compressive forces. Therefore, reinforced concrete structures are applied as composite structures with steel materials such as reinforcing bars that can withstand tensile force. ...
Abstract: Construction robots are devices of increased danger and, under certain conditions, can become a source of injuries to maintenance personnel, as well as lead to the failure of technological equipment. Most of the accidents are associated with the presence of maintenance personnel in the working area during programming, configuration, training, ...
Abstract: In recent years, automation of mining equipment has been required to improve productivity, predictability, and safety of mining operations. Some major mining companies have begun efforts to automate dump trucks that transport overburden and minerals, eliminating the need for human operators, aiming for reducing labor costs, increasing operating hours, and ...
Abstract: The use of robotic systems on construction sites can efficiently reduce construction time and increase safety by replacing construction workers in monotonous or dangerous operations. Robots for on-site construction applications are challenging and difficult to implement because of the evolving and unstructured nature of construction sites, the inherent complexity of ...
Abstract: In the construction of high-rise buildings, the conventional methods for the on-site installation of prefabricated facade modules require considerable manual handling. This unsafe and inefficient practice can be solved through automation. This paper critically reviews automated Unitized Curtain Wall (UCW) installation and discusses opportunities for future development, as found in adjacent ...
Abstract: In Japan's construction industry, techniques of producing complex three-dimensional (3D) formwork at construction sites are conventionally developed using the sophisticated skills of carpenters. Inspie of the development of digital technologies, the production of free-form shapes faces considerable cost and time management risks that require pragmatic solutions. In the efficient building ...
Abstract: Cable path optimization is a commonly encountered problem in industrial construction projects. Numerous designs are technically feasible but are associated with varying construction costs and effort. Hence, selecting the right network is deemed a critical decision. Multiple shortest path algorithms could be deployed to identify the optimal solution. Although they ...
Abstract: An ideal Design-Construction Interface is assumed in the decision making process of initiation and planning. The uniqueness, site conditions and contingencies cannot be envisaged and incorporated in its entirety in all projects. Constructability in resonance to the appropriate technology becomes paramount in deciding the material, structural forms and construction methodology. ...
Abstract: Falls are the leading cause of construction site accidents and made up more than 60 percent of all construction-related deaths in 2018, according to the Korea Occupational Health and Safety Administration (KOSHA). Accordingly, the government conducts intensive management and supervision of scaffolding and scaffolding installation at small sites while inducing ...
Abstract: Façade condition assessment for buildings is essential to public safety in cities. Currently, twelve major cities across the U.S. ensure the building façade safety with mandatory façade inspection programs. Even in major cities with the façade inspection programs, there have been seventeen falling debris accidents reported in 2019, three of ...
Abstract: As is well known, resident engineers on site might plan a heuristically deterministic construction schedule by PERT/CPM program. Since it is boring and time-consuming to gather, edit and input field data into the PERT/CPM program, however, there are very few opportunities to revise the construction schedule on daily works. This ...
Abstract: Traditional project delivery methods are inflexible for projects that require a high level of collaboration among project teams as well as present challenges to innovative design and construction approaches. In today's era, projects are executed at a faster pace at the early stages of scope definition. This causes a high ...
Abstract: Research towards automation of heavy construction machines for efficient and safe construction processes that are robust to various environments and disturbances has been conducted for many years. In this paper, we show two contributions towards this objective. Firstly, we explore the use of reinforcement learning to automate construction machines. Secondly, ...
Abstract: In contrast to conventional serial robot arms, a cable robot offers special characteristics which make it predestined for usage in automated construction: Cable robots use a robust and simple mechanical layout, including a frame, motordriven winches, pulleys and cables connected to the end effector in a parallel kinematic structure. Derived ...
Abstract: Machine learning techniques have been successfully implemented for the identification of various construction activities using sensor data. However, there are very few studies on activity recognition in the automated construction of low-rise residential buildings. Automated construction is faster than conventional construction, with minimal human involvement. This requires high accuracy of ...
Abstract: The following paper is discussing the potential excavation systems and development of the production tool system of a small-scale mining robot. The limitations of power and weight increase the complexity of the design of the production tools immensely. Each excavation method's efficiency is depending on the material to be excavated, ...
Abstract: Timber building industry is facing a major transformation with digitalization and automation being more broadly adopted. Prefabricated timber frame structures can be mass-produced on large robotic assembly lines, increasing the productivity and competitiveness of wood over standard inorganic materials such as steel or concrete. While standardization is likely to limit ...
Abstract: Boom cranes are among the most used cranes to lift heavy loads. Although fairly simple mechanically, from the control viewpoint this kind of crane is a nonlinear underactuated system which presents several challenges, especially when controlled in the presence of constraints. To solve this problem, we propose an approach based ...
Abstract: Transportation is one of the major contributors in global energy consumption and greenhouse gas emissions. Currently, there are approximately 1.32 billion on-road vehicles around the world, which is expected to be doubled by 2040. This increase has triggered deep concerns over the global issues of climate change and sustainable development. ...
Abstract: Automation of cranes can have a direct impact on the productivity of construction projects. In this paper, we focus on the control of one of the most used cranes, the boom crane. Tower cranes and overhead cranes have been widely studied in the literature, whereas the control of boom cranes ...
Abstract: Path planning, as a primary mission in crane lift planning, has a profound and direct impact on the safe and efficient execution of lift jobs on construction sites. Typically, the main objective of path planning is to find the shortest (or a relatively short) and collision-free path from the load ...
Abstract: This paper proposes an autonomous crawler carrier system to improve productivity of earth and sand transportation work. In general, multiple crawler carriers on the transportation work repeatedly move on almost the same route between loading and unloading locations. There is a risk that the crawler carrier deviates from the transport ...
Abstract: An optimization system of a lifting plan must have generality to manage different design conditions and real-time changes at a construction site. Furthermore, it must optimize the construction planning and scheduling. In a previous study, we trained a two-point locomotion model for crane hook movement using deep reinforcement learning to ...
Abstract: Hydraulic excavators are used for various purposes, such as excavation, dismantling, and leveling. The accurate positioning of the excavator is particularly important in loading operations, such as positioning a bucket immediately above a target. The positioning of a bucket via the swinging operation can also be regarded as a kind ...
Abstract: Recently, it began the spread of bulldozers using information technology during controlling the machine to increase the efficiency of the entire execution of work, including avoiding the usually necessary final surface treatment. Blade control mechatronic system for leveling work of bulldozer blade enables the bulldozer to effectively perform a ground ...
Abstract: Equipment selection for a construction project is a complex decision making task that impacts the project cost significantly. The literature highlights the increasing focus of recent studies on tower crane (TC) optimization, largely due to the shift from horizontal to vertical construction. Many studies tend to select a single TC ...
Abstract: This research presents the design framework of the artificial intelligent algorithm for an automated building management system. The AI system uses wireless sensor data or IoT (Internet of Things) and user's feedback together. The wireless sensors collect data such as temperature (indoor and outdoor), humidity, light, user occupancy of the ...
Abstract: Automation of construction machinery has the potential to improve efficiency and safety during the construction process. However, most construction machinery is directly teleoperated limiting the control to a single paradigm. Moreover, the abundance of non-linearities due to the design of pumps, valves and the interaction of different actuators complicates planning ...
Abstract: This paper proposes an excavation path generationmethod for autonomous excavators by considering the bulking factor of soil. In existing research on autonomous excavation, the excavator's path was manually planned, based on known soil properties. Thus, the efficiency of the excavation process may reduce in situations where the soil ...
Abstract: In this research, a sway suppression algorithm was developed for a crane operator support system. To evaluate the effect of sway suppression, a crane experiment testbed was manufactured. The crane testbed is designed by the crane dynamic model, and the swing motion, boom motion and load hoisting are driven by ...
Abstract: The energy consumption of a backhoe during digging operation is the sum of the energy due to earth pressure and backhoe motion. The authors' previous studies have revealed the earth pressure model on the arc trajectory, but not on the horizontal trajectory, which is often used in normal digging operation. ...
Abstract: In the construction industry, continuous monitoring of actions performed by construction machinery is a critical task in order to achieve improved productivity and efficiency. However, measuring and recording each individual construction machinery's actions is both time consuming and expensive if conducted manually by humans. Therefore, automatic action recognition of construction ...
Abstract: Clogging is one of the main risks when slurry shield tunneling in the mixed ground condition containing clayey soils. Severe consequences, such as instability in the excavation face and high cutter wear, may occur if the shield machine operators don't take specific measures to eliminate clogging. Therefore, early warning of ...
Abstract: This research investigates the development and validation of state-of-the-art high-fidelity models of soil cutting operations. The accurate and efficient modeling of complex toolsoil interactions is an open problem in the literature. Modeling options that provide more flexibility in trading off accuracy and computational efficiency than current state-of-theart continuum or discrete ...
Abstract: This paper proposes an IoT-enabled network of low-cost sensors that are co-located for construction site monitoring. The network performance enhancement is achieved via its system dependability in terms of improved availability, integrity, reliability, maintainability, security and safety in real-time monitoring of environment parameters. The sensor motes of various sensing modules ...
Abstract: Cybersecurity threats related to new technologies get little attention until an incident occurs, and vulnerabilities are highlighted. In the case of construction projects, any cyber breach, either malicious or incidental, has the potential to cause significant damage. This varies from unauthorized access of sensitive project information to hijacking construction equipment ...
Abstract: The separation of exterior tiles from buildings diminishes the visual appeal of cities and can injure pedestrians when they are struck by falling tiles. Therefore, tiles should be inspected periodically. However, completion of the inspection process has hurdles, including high cost and the need for qualified human inspectors. This study ...
Abstract: The new Hachinohe indoor skating rink required an extremely flat concrete slab. ±2mm precision concrete surface was expected across 6,350 m2 concrete slab. It is impossible to construct such a large super flat slab with a conventional construction method to maintain the height of the concrete surface at intervals of ...
Abstract: For several years, the compaction quality of embankments has been controlled by the dry bulk density and water content. However, the quality assessment is time consuming and merely a point measurement. We are developing a method that measures the mechanical properties of soil by observing the soil - wheel interaction ...
Abstract: We conducted a measurement accuracy and laborsaving in the spraying slope frame work by appli-cation of ICT earth works using UAV was verified by using field of actual work? In the UAV survey? it was possible to apply the Ministry of Land? Infrastructure? Transport and Tour-ism (MLIT) standards to the ...
Abstract: In Japan, the construction industry strongly be needed productivity improvement and increasing the number of new hires due to improvement of working environment. Site manager needs to grasp whether the daily progress is as planned and updates the schedule appropriately for improve site's productivity and safety. In image-based data acquisition ...
Abstract: Recently, as technologies combine, AR (Augmen ted Reality)/VR(Virtual Reality)/MR(Mixed Reality) and advanced sensing equipment are being developed. The possibilities of their application to construction fields is likewise increasing. Research into applying these techniques to facility maintenance, manager training, and safety/evacuation training is being actively conducted. In the case of the ...
Abstract: Application of technologies as laser scanning, remote sensors, drones or mobile applications are playing a major role in changing the management procedures of maintenance and operation activities in the roads. Without scarifying the quality of the data, tasks can be performed in less time while maintaining the same level of ...
Abstract: The growth in the size and the level of complexity of construction equipment imposes tremendous hazards in construction sites. Any breakdown or failure of such systems may not only cause the delay in construction but also lead to the loss of life and properties. To address these issues, this paper ...
Abstract: In this study, we propose autonomous UAV flight using the total station to estimate self-localization at a dam in a non-global navigation satellite system (GNSS) environment and suggest a flight path planning method for the UAV's flight position. As a result of the UAV's stable autonomous flight, a certain distance ...
Abstract: This paper presents a feasibility study of surface geometry (SG) evaluation and material classification (MC) for robotic spraying. We propose two complementary approaches using point clouds and intensity data provided by a state-of-the-art industrial time-of-flight (ToF) depth camera. The SG evaluation is based on geometric feature computation within local neighbourhoods, ...
Abstract: In this paper, Reality Capture technologies are used to reconstruct 3D models of utility excavation holes which can later be visualised in the field, allowing for a more reliable, comprehensive and perceptible documentation and viewing of utilities before excavating to potentially reduce subsurface utility damages. An Augmented Reality (AR) prototype ...
Abstract: Deterioration models significantly contribute to increasing the efficiency of life-cycle planning for highway assets. Therefore, asset managers strive to maximize the accuracy of such models and intensify the efficacy of the life-cycle plan. Even though nearby assets have been thought to have an impact on each other's conditions, usually, such ...
Abstract: Unmanned Aerial Vehicles (UAVs) are an emerging technology that serve a range of applications for construction purposes including the creation of site survey maps, jobsite monitoring for routine progress reports, and structural inspections. Though while promising, drones have not yet been widely utilized by the construction industry to their fullest ...
Abstract: Steel embed plates are a vital component in connecting steel to concrete members. They are most often used in the construction of tilt-wall concrete buildings, but can be used anytime there is a need to attach steel to a concrete panel or slab. Proper anchorage and connection to concrete should ...
Abstract: Aging society is not only a crisis in the developed world but also a severe challenge in some emerging economies. However, the awareness of population aging and gerontechnology is far from sufficiently addressed in the architectural design education in universities. Therefore, an interdisciplinary approach in design education is urgently needed ...
Abstract: With the rapid spreading of digital technology and automated construction applications in architecture, engineering and construction (AEC) society, the current trend is becoming clearer, that automation will change the way we design and build. Robotic Tectonics, as a part of automatic construction methods aiming to achieve the integration workflow from ...
Abstract: Civil and Construction Engineering (CCE) is a discipline that seeks to engineer the physical world, yet students in classrooms are limited to studying and applying concepts predominantly on paper or computer screens. This paper proposes a framework for the use of augmented reality (AR) sandboxes to bring the vastness ...
Abstract: This paper presents the learning outcomes of the Open InfraBIM and Construction Automation workshop in OuluZone motorsport Center, Finland, during October 2019. Totally of 45 students from the University of Oulu, the Oulu University of Applied Sciences, and the Oulu Vocational College were challenged to build the Speedway track by ...
Abstract: Considerable body of literature exits on automated site data acquisition for tracking and progress reporting of construction operations. While GPS-based solutions have been widely investigated in many studies for outdoor tracking of these operations, indoor tracking proved to be more challenging. This paper focuses on indoor material localization and investigates ...
Abstract: This paper presents an integrated raw-wood fabrication workflow using an industrial robot arm and a laser scanner. The research is situated in a Swiss mountain forestry context where timber in its natural form could be applied locally without relying on large centralized timber industries. While local saw-mills relies on ...
Abstract: In order to teleoperate excavators remotely, human operators need accurate information of the robot workspace to carry out manipulation tasks accurately and efficiently. Current visualization methods only allow for limited depth perception and situational awareness for the human operator, leading to high cognitive load when operating the robot in confined ...
Abstract: Automation for retrieving relevant contents without human interventions has been considered as an essential task in the construction industry. Computer vision has grasped attention to be employed for providing rich data from the surrounding environment and automation of such critical tasks. Nonetheless, various challenges, including the detection of complicated and ...
Abstract: Construction robots have drawn attention in research and practice for decades. Considering most of the construction robots are not fully automated and humans are always involved in the construction process, how humans and robots collaborate has a great impact on the total productivity. Unlike collaboration systems between human-human, human-device and ...
Abstract: Medical facilities in the United States (US) are facing growing demands due to shifts in patient demographics, healthcare policies, costs of care, and medical technologies. An emerging trend is the growing importance of outpatient and ambulatory care relative to inpatient care. Whereas the term "inpatient" involves a patient needing admission ...
Abstract: The majority of fatalities and traumatic injuries in heavy industries involve mobile plant and vehicles, often resulting from a lapse of attention or communication. Existing approaches to hazard identification include the use of human spotters, passive reversing cameras, non-differentiating proximity sensors and tag based systems. These approaches either suffer from ...
Abstract: This paper introduces a navigation algorithm of mobile indoor unmanned ground vehicle (UGV). The navigation methodology with AR markers is presented and demonstrated in detail. In the navigation algorithm, the mobile indoor UGV can make 2D or 3D map inside the structure. From the driving test, it has seen that ...
Abstract: Collisions between workers and operating vehicles are the leading source of fatal incidents in the construction industry. One of the most prevalent factors causing contact hazards is the decline in construction workers' auditory situational awareness due to the hearing loss and the complicated nature of construction noises. Thus, a computational ...
Abstract: Building assets surveys are cost and time demanding and the majority of current methods still rely on manual procedures. New technologies could be used to support this task. The exploitation of Artificial Intelligence (AI) for the automatic interpretation of data is spreading throughout various application fields. However, a challenge with ...
Abstract: Nowadays, we can relatively easily create 3D models of earthwork construction sites by taking many pictures from multiple viewpoints using Unmanned Aerial Vehicles (UAV) and by applying Structure from Motion (SfM) technique to the pictures. However, since many construction machines are moving at the construction site, they become noise or ...
Abstract: Workers in a construction site may be exposed various hazards and risks and may work with excessive demands beyond their physical abilities. It is important for construction companies to sustain a workforce in the work environment that does not sacrifice worker safety and health and maintains the required productivity. The ...
Abstract: With the development of the construction industry, many problems such as human safety are remaining unsolved. The construction holds the worst safety record compared to other industrial sectors, approximately 88% of accidents are related to workers' safety. The high complexity of the construction site compare to the ordinary living environment ...
Abstract: Cranes as an essential part of the construction machinery, are one of the prominent sources of fatalities in the construction sites. The camera assistant system can contribute significantly to the safety of the crane operation particularly in blind lifts tasks, where the operator highly relies on the load-view camera. In ...
Abstract: Spotting indications of unsafe human behaviour, a leading cause of an accident, is critical in providing a safe workspace. Among factors affecting human behaviour, stress and overload are the most significant ones, where limited knowledge exists on their underlying causes. Tracing physiological signs caused by stress and overload might be ...
Abstract: Accurate information on workers' behavior is important for safety and productivity management on construction sites. In recent years, some methods for estimating construction workers' behavior using sensing data have been proposed to collect the data based on scientific evidence. Due to the limitations of previously proposed methods that usually relied ...
Abstract: Fatal accidents occur at construction sites. Incidents in- volving dangerous situations but not reaching the category of fatal accidents also take place. When an incident occurs, workers typically generate an on-site physiological reaction. In this paper, an automatic detection system is proposed to automatically identify incidents by measuring biological sig- ...
Abstract: Learning by doing creates a marked impact on a trainee's cognitive ability. Technologies such as Virtual Reality (VR), Augmented Reality (AR) etc. aid in developing platforms to enhance the learning experience of users. These technologies can be particularly effective in construction sites which are complex and contain hazards difficult to ...
Abstract: Researches on the combined platform of unmanned vehicles, especially aerial, and artificial intelligence can be executed on hobbyists' level with a low budget along with inside multi-billion-dollars technological laboratories. This flexibility has allowed UAV to attract financial potentials and even to migrate them from another technological field. Nowadays, UAVs are ...
Abstract: To inspect Road Tunnels every five-years is obliged in Japan, because for managing base the LCC (Life cycle cost). However, there are serious issues that not enough of engineer and budget to maintenance, so new technology for growing inspect efficiency is desired. To solve these issues, we developed Tunnel full ...
Abstract: Construction industry is going through a paradigm shift where remote data collection approaches are replacing manual processes that are presently being followed in construction related activities. Unmanned Aerial Vehicles (UAV) are being engaged in various construction applications, like real-time supervision, progress evaluation, surveys, mapping, safety evaluations etc. The paper discusses ...
Abstract: In 2014, a regular inspection of public infrastructure facilities (bridges, etc.) once every five years be-came a legal system. Of the approximately 730,000 bridges nationwide, 530,000 are small-scale bridges with a bridge length of 2-15m. These bridges are often not easily accessible by inspection engineers. Therefore, in this study, for ...
Abstract: In recent years, deterioration of concrete structures such as floating and delamination has occurred. These damages can lead to the falling of concrete pieces. It may cause damage to third parties such as vehicles or pedestrians passing under the bridge. Therefore, the concrete damages need to be detected and ...
Abstract: In order to ensure the safety of construction workers during the construction process, supervision of violations of safety regulations and control of hazardous situations not recognized by the workers are continuously required. However, due to the dynamic nature of the construction site, the hazardous situation is always changing and there ...
Abstract: As permanent firefighting equipment that is usually available in a build building, do not exist in many construction job sites, so they merely depend upon the portable firefighting equipment (PFE) to keep the fire damage limited and minimum. To ensure the proper functionality of the PFE in the case of ...
Abstract: We have developed a function to process the images of three monocular cameras mounted on a hydraulic excavator in real time, and to notify the user of any human-like images on the monitor and by sound. This function is composed of the following four functions. (1) Detection of the human ...
Abstract: Visual inspections of underside of concrete superstructures of piled piers are usually carried out by inspectors on small boat or divers. it is not easy to ensure work safety in such a narrow space because of affection by waves and tides during inspection work. And, inservice facilities require to carry ...
Abstract: In the UK, the railing sector has a large number of ageing masonry bridges that need to be examined every year. The traditional inspection regime consists of visual observation with manually recording the defect information observed on the structure. Previous studies have shown that this method of inspection is not ...
Abstract: Surface flatness is an essential indicator for quality assessment of concrete surfaces in the construction industry. Terrestrial laser scanning (TLS) has been popularly applied for surface flatness inspection due to its speed and accuracy. However, scanning area far away from the TLS usually suffers from inaccurate surface flatness measurement and ...
Abstract: In typical heavy industrial construction projects, scaffolding can account for 30% to 40% of the total direct manhours. However, most industrial contractors estimate scaffolding manpower based on a certain percentage of the direct work, which leads to cost increase and schedule delay due to inaccurate estimation. In order to aid ...
Abstract: Concrete bridges are important infrastructures, which thus need effective rehabilitation to maintain good condition. Bridge rehabilitation projects often have tight schedules, multiple participants and constraints, and scattered project information. Thus, improving information integration in these projects can be critical. This research develops a concrete bridge rehabilitation project management ontology (CBRPMO) ...
Abstract: Real-time monitoring of the condition of equipment enhances effective decision-making in terms of machine maintenance and operational efficiency. This study presents a multi-layered system architecture to monitor the real-time health of a sensor-integrated hand-tool. The architecture is designed based on specific components, features, and requirements of each layer. The study ...
Abstract: During the early phases of building design, the architects create many variants and make important decisions about different design aspects and details mostly based on their own experience and know-how. In order to reduce the risks brought by arbitrary decisions, a lot of effort was put into developing simulation tools. ...
Abstract: Construction Site Layout Planning (SLP) is one among the processes that consider decision-making as essential to achieving the desired project performance. In lack of decision support system (DSS), the project planners employ learnings from experience to make decisions that often lead to sub-optimal planning of site, resulting in congestion, safety ...
Abstract: Standard hearing protection devices (HPDs) that reduce noise by strictly passive means are mandatory at construction sites. However, standard HPDs have been proved weaken the audibility of safety-critical sounds thus worsen construction workers' auditory situational awareness (ASA). Therefore, a wearable hearing protection technology that uses artificial intelligence (AI) to amplify ...
Abstract: Reusing of the past information and lessons learned helps practitioners in better management of various aspects of construction projects, such as cost estimation, planning, contracting, and design. Measuring the similarity of construction projects improves the efficiency of the existing information systems in retrieval of relevant cases. It was hypothesized that ...
Abstract: Wildfires pose a big threat to human life and property safety. Previous studies on wildfire risk management focused mainly on understanding wildfire behaviour through computer simulations. Effective wildfire risk management also largely depends on the evacuation performance success. Computational tools tend to be the best approach for simulating wildfire evacuation ...
Abstract: Three-dimensional (3D) measurement that captures the state of construction sites is key to promoting ICT-supported construction processes. Structure-from-Motion (SfM) and Multi-View Stereo photogrammetry are the best solutions for small and mid-sized construction companies due to their high portability and low cost. However, efficient creation of high-quality 3D dense models using ...
Abstract: We have been and are doing development and research on construction AI system based on Actor- Critic framework. This paper discusses cyber agents who are computerized agents of mobile entities, which are composed of construction machines, vehicles and workers. Each of the cyber agents would carry with simple function to ...
Abstract: For earthwork, whether or not it will be possible to automatically generate a work plan for construction machinery has become the key to realizing autonomous construction of earthworks. The use of AI is being sought by some researchers for the automatic generation of construction setups. Efforts are being made to utilize ...
Abstract: Adaptation of dated residential towers is an urgent issue due to aging housing infrastructure and growing demand for affordable housing. Computational design methodologies have the potential for facilitating optimized design strategies driven by improved energy performance and reduced life-cycle carbon emissions. Modular Construction (MC) can also increase efficiencies in the ...
Abstract: In this paper, with a view to contributing to the promotion of this field, I describe desirable future situations and ideas, matters that should be taken into consideration in future efforts, etc., focusing on the discussions that took place in 2005-2008. The trends are arranged in consideration. Here, with the ...
Abstract: Studies have shown that early design finalization is important for projects utilizing Off-site Prefabrication and final assembly on site. Freezing engineering design at an early stage has various advantages such as streamlined manufacturing and timely transportation to site as well as timely deployment of adequate resources on site for assembly. ...
Abstract: The advantages of using modular and offsite construction compared with the traditional construction methods are numerous due to its efficiency in delivering shorter schedules, lower cost, higher quality, and better safety. However, one of the biggest challenges facing the prefabrication industry today is the inherent difference between financing traditional construction ...
Abstract: Modular Integrated Construction (MiC) is an advanced type of modular construction focusing on addressing high-density high-rise buildings and is adopted as a new policy initiative in Hong Kong. Previous studies have examined the potential for using different methods and technologies to support project delivery in offsite and modular construction. However, ...
Abstract: Remicon, an important material constituting the structure of a building, needs an efficient quality management system throughout the entire process from production to delivery, including production management, shipment-transport management, and delivery management, to ensure the required performance by the contractor. Nowadays Remicon factories becoming smart factories and automated form for ...
Abstract: Lending inspiration from the manufacturing industry, industrialized house-builders have adopted some of its characteristics such as high standardization of configurable products and manufacturing processes. Standardization of product and information flow within industrialized house-building has shown to beneficially increase offsite manufacturing efficiency. They have however not been able to transfer the ...
Abstract: With a focus on mechanical earthworks, automation of limited operations is progressing with regard to driving operations such as hydraulic excavators, bulldozers, and compaction rollers. The Ministry of Land, Infrastructure, Transport and Tourism is promoting public works that positively utilizes automated construction equipment and the like for the purpose of ...
Abstract: IIn the construction industry, there is often a need to identify and localize assets and activities on the jobsite to assess and improve the performance of their associated processes. Traditional methods for monitoring construction activities are costly and time-consuming. Excavators and dump trucks are among the most common assets used ...
Abstract: The construction industry has insufficient utilization of standard work and workload. Generally, scheduling for construction projects follows the common sense of the industry. The sequencing of activity and its duration estimation is highly dependent on the experience of the experts who are assigning them to the project, and it is ...
Abstract: The growing number of bridges and their deteriorated conditions on one hand and the budget squeeze for their repair and rehabilitation on the other call for automated detection of defects and smart methods for condition rating of these bridges. This paper presents a newly-developed standalone computer application for automated detection ...
Abstract: The construction industry has been forever blighted by delay and disruption. To address this problem, this study proposes the Fitzsimmons Method (FM method) to improve the scheduling performance of activities on the Critical Path before the project execution. The proposed FM method integrates Bayesian Networks to estimate the conditional probability ...
Abstract: Recently, Off-Site Construction (OSC) is being actively applied to improve productivity by efficient factory-based production method rather than on-site production. In OSC-based construction process, problem is the accurate quality inspection for the members produced in the factory is carried out but the quality inspection for the members shipped from the factory ...
Abstract: Although execution is generally the phase during which challenges faced by the construction industry become apparent, it only represents the tip of the iceberg. Execution depends on the effectiveness of construction planning and control ? an area identified by researchers as in need of improvement. Production Strategy is a fundamental ...
Abstract: Recently, the demand for base-isolated structures has been increasing, especially in Japan. For reliable construction of seismic isolation devices, contractors must ensure that the area ratio of the air bubbles occupying the backside of the base plate does not cross the threshold, which is decided by the structural designer. However, ...
Abstract: A majority of safety accidents in construction workplaces stem from workers' unsafe behaviors. Such unsafe behaviors are often caused by "risk habituation," the tendency to underestimate a risk after previous repeated exposure to similar hazardous situations. Understanding the risk habituation process in construction is critical for intervening and preventing the ...
Abstract: Design features that form urban settings such as greenery, height of buildings, and variation in the building façade (materials, color, and proportion) are known to have effects on how people experience environments. As the urban population grows and shifts to urban settings for living (e.g., 82% of people live in ...
Abstract: Productivity and safety are in a trade-off relationship, and the improvement of the safety management system of construction sites is a pressing issue. Therefore, it is important to know and analyze information about incidents at real construction sites. However, it is difficult to gather information about these incidents from workers' ...
Abstract: An Unmanned Aerial Vehicle (UAV), equipped with a Light Detection And Ranging (LiDAR) scanner, can collect high-accuracy point cloud data of facilities in cluttered indoor environment. Recent developments in aerial robotics have demonstrated navigation through designated waypoints, yet little has been investigated on the trajectory to complete a full scan ...
Abstract: The purpose of this research is to use digital technology to streamline operations and improve construction when using non-uniform building materials with discrete and differing forms, such as those used in traditional wooden buildings. Taking irregular timber procurement as a model use case, we formulated a method of utilizing 3D ...
Abstract: In order to monitor the state of large-scale infrastructures, image acquisition by autonomous flight drones is efficient for stable angle and high-quality images. Supervised learning requires a large dataset consisting of images and annotation labels. It takes a long time to accumulate images, including identifying the damaged regions of interest ...
Abstract: The shape of a building can be recorded through various technologies, such as three-dimensional (3D) laser scanners and photogrammetry. The 3D measurement technology facilitates the mensuration of unevenness of a reinforced concrete structure, horizontality of the floor, and drainage gradient. In particular, measuring devices with a tilt sensor (e.g., 3D ...
Abstract: Drones or Unmanned Aerial Vehicle (UAV) and services based on them have been used globally in various sectors including but not limited to construction, real estate, e-commerce, agriculture, utilities & energy, financial services, and media & entertainment. Use of such robots have a potential to reduce the cost & time ...
Abstract: Many of Japan's bridges built during the period of high economic growth are deteriorating and require proper maintenance. However, due to the shortage of specialist in the field of civil engineering as well as the declining birthrate and aging population, the current bridge periodic inspection the proximity visual inspection and ...
Abstract: This study developed a system that generates video from a view following a robot, using composition CG of the present position of the robot using deliberately delayed video on the robot for displaying the current position and orientation of the robot. The proposed view generation method overcomes the disadvantage of ...
Abstract: Lean construction (LC) and Building Information Modeling (BIM) support an integrated vision for short cycle plan-do-check-act cycles of planning and control in construction. However, operations control tasks, such as delivery of design information to the field, monitoring, progress evaluation and error detection are still largely manual and thus time-consuming, costly ...
Abstract: Due to limited funds, road authorities around the world are facing challenges related to bridge management and the escalating maintenance requirements of large infrastructure assets. Nowadays, many government organizations have published a variety of data to enable transparency, foster applications, and to satisfy legal obligations. Open governments data like bridge ...
Abstract: Building information modeling (BIM) is a rapidly developing technology used in the construction industry. Many construction companies have implemented BIM into their construction processes for executing various construction management tasks, including four-dimensional (4D) progress simulation and cost control. However, 4D progress simulation has not been simultaneously integrated and compared with ...
Abstract: The automated generation of geometry-only digital twins of Overhead Line Equipment (OLE) system in existing railways from point clouds is an unsolved problem. Currently, this process is highly reliant upon manual inputs, needing 10 times more labour hours than scanning the physical asset. The resulting modelling cost counteracts the expected ...
Abstract: Logistics management plays an essential role in supporting the primary activities in manufacturing industries. Similarly, in the construction industry, logistics operations are a crucial part that directly influence the construction operations. Construction operations management requires various stakeholders to collaborate through effective communication and prompt information sharing. However, logistics management in ...
Abstract: In recent years, the use of intelligent construction equipment with sensors attached to construction heavy equipment used in civil engineering earth work has become commonplace. Sensors provide a variety of information on construction equipment, and this information is used to control the cutting edge of construction equipment called machine control ...
Abstract: Data sets are often incomplete and low-quality at the end of a construction project. This creates rework or hinders opportunities to use data during future activities of the facility lifecycle (e.g. facility management, renovation, demolition). This research prototypes and evaluates a novel process to use blockchain and smart contracts in ...
Abstract: As the world witnesses the fourth industrial revolution, construction remains a newcomer that lags in its adoption of technological innovations. The information-intensive nature of the construction industry, coupled with its multidisciplinary nature, has pushed construction to enter the era of Big Data and has provided fertile ground for research on ...
Abstract: Excavators and trucks are important equipment for earthmoving work, which have major contributions to construction productivity. In order to control the work efficiency and productivity of earthmoving equipment, computer-vision (CV) methods have been proposed to monitor equipment operations from site surveillance videos. Existing methods can recognize equipment activities to estimate ...
Abstract: The construction industry is forecast to grow from its already impressive size to unprecedented new heights. This significant expansion, along with the increased complexity and sophistication of construction projects, has placed more pressure on construction companies to maintain their vitality and grow in the modern market. As the fourth wave ...
Abstract: As climate change increases the frequency and intensity of natural disasters, proactive disaster management is needed to reduce the damage caused by the natural disasters. Existing reports that record the scale, damage, and response of natural disasters can be used as references for proactive disaster management. However, it is labor-intensive ...
Abstract: We obtained various effects about ?Efficiency, Quality, Safety, Improving the work environment and Human resource development' through overall utilization of Information and Communication Technologies (hereinafter referred to as ICTs) in the excavation work and management at Yoneshiro-gawa River, a first-class river. At the topographic surveying stage, we used the UAV and ...
Abstract: Concrete structures are heavily used in most modern societies and the population of structures in need of inspection is rapidly growing. On the other hand, the manpower for inspection is decreasing. This has brought into focus the need for automated inspection methods for concrete structures. The hammering test is a ...
Abstract: In road maintenance, it is necessary to construct an environment that manages 3D data and maintenance information for its effectivity and efficiency. Engineers should be able to use 3D data not only for virtually reviewing the design of a facility, but also for analyzing building operations and performance. Using 3D ...
Abstract: Approximately a half century has passed since the construction of expressways in Japan, and expressways have become decrepit over the decades. In order to ensure safety and security of expressways for the next generation, expressway companies have been carrying out large-scale renewal works of bridges and tunnels (hereinafter collectively the ...
Abstract: Currently, road managers are required to maintain and renew road assets that are rapidly aging and damaged. On the other hand, due to the everincreasing road assets, social problems such as cost reduction and shortage of engineers in maintenance and renewal are occurring. In particular, the "Road Bridge Periodic Inspection ...
Abstract: The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) is promoting the use of drones and other robots to improve the construction and management processes and improve the efficiency of infrastructure inspections, and is preparing an AI development environment that supports "human judgment." Specifically, MLIT is preparing "teaching data" which ...
Abstract: Plenty of variance lies in the development stage of a typhoon, including its location, direction, and surrounding meteorological conditions. Affected by such numerous contributing factors, it is not always easy for nowaday technology to make accurate typhoon forecasts. The experiences from the past typhoons may provide decision-makers with sufficient information ...
Abstract: Cracks are one of the significant criteria utilized for diagnosing the disintegration of solid structures. Normally, a structural designer with specific information would assess such structures by checking for breaks outwardly, outlining the aftereffects of the examination, and afterward getting ready to investigate information based on their discoveries. A review ...
Abstract: We have developed a mobile survey vehicle with a high-precision laser scanner measurements for deformation analysis, 20 video cameras for damage assessment on lining surface such as cracks and water leakage, and also a non-contact radar to detect lining thickness and cavity behind lining. In this paper, we report the ...
Abstract: Natural disasters such as bushfires, wildfires, hurricanes, earthquakes, and floods cause significant socioeconomic losses with associated damages to communities. From 2005 to 2014, the worldwide damage caused by disasters has been more than US$1.4 trillion, with 0.7 million deaths and 1.7 billion people affected. In order to reduce the negative ...
Abstract: Payment issues are necessary in the construction industry, often manifested by high levels of arrears and long-term payment delays. An automated payment could be a solution to speed-up the payment process after successful completions. In this paper, a framework is proposed for the automated payment via Building Information Modeling (BIM), ...
Abstract: The evaluation of indoor risks is a paramount issue in building design and construction. Conventional methods that rely on handcrafted rules or drills are insufficient for this task as they either fail to accurately depict the sophisticated spatial attributes and people's cognition abilities or are not suitable during the design ...
Abstract: With the recent rapid advancement of vision technologies, recognized research widely applies to resolve the construction industry's remaining problem as known quality, cost, time, and safety. However, there are few studies on how to place visual devices for effectively collecting images/videos on construction activities. This study proposes a framework for ...
Abstract: Based on case studies within the construction industry, the application of location-based construction scheduling and utilizing software-based rule checking has delivered promising research results. We first explain a path on how the lessons from existing work practices can be used in digitalizing construction processes. This includes the objective of describing ...
Abstract: At the beginning of a construction project, cost, time and quality are defined, which must be adhered to throughout the entire construction process. Compared to other industries, risk management in the construction industry is often treated negligently. Risk management is rather an additional documentation task than an effective project management ...
Abstract: In order to dramatically improve the productivity and safety of tunnel construction, we are developing a new construction production system "Shimizu Smart Tunnel". Based on the concept of "Digital Twin", it utilizes data sensing technology and information communication technology to acquire all kinds of data from people, machines and environment ...
Abstract: A long-standing problem in the field of automated reasoning is designing systems that can describe a set of actions (or a plan) that can be expected to allow the system to reach the desired goal. Artificial Intelligence (AI) techniques provide the means to generate plans and to reason with as ...
Abstract: We have been researching a mobile robot that pull a cart with equipment to improve productivity at construction sites. In this field of research, a cart having front wheels as swivel wheels and rear wheels as rigid wheels have been used. How- ever, at the construction site, in many cases, ...
Abstract: Modern heavy machinery, including mobile cranes, are increasingly equipped with information systems in the form of head-down displays that present supportive information. Due to the physical presence of head-down displays, they are usually placed far away from operators' line of sight, thus the information is unintentionally overlooked. This paper investigated ...
Abstract: The development of the DokaRobo series for remotely controlling construction equipment began in 2007, and life-size humanoid robots (The DokaRobo No. 1 and 2) were developed. The DokaRobo series is installed in the driver's seat and can be easily installed by a single adult. After repeated tests and interviews with ...
Abstract: Currently, humans work in high-risk environ-ments such as earthwork sites with construction ma-chine. Such works are expected to be replaced by ro-bots, but autonomous technologies of current robots are not sophisticated enough to deploy to such tasks. Thus, it is reasonable to use robots that can assist hu-mans in cumbersome ...
Abstract: Although the amount of building construction in Japan is not expected to decrease in the next few years, there has been a decrease in the number of fire resistive covering workers over the years. In this study, to overcome the shortage of construction workers, we developed a spraying robot for ...
Abstract: The installation of curtain wall modules (CWMs) is a risky activity carried out in the heights and often under unfavorable weather conditions. CWMs are heavy prefabricated walls that are lifted normally with bindings and cranes. High stability is needed while positioning in order not to damage the fragile CWMs. Moreover, ...
Abstract: Collaborative robot (co-robots) are being increasingly deployed on construction sites to assist human workers with physically demanding work tasks. However, due to inherent safety and trust-related concerns, human-robot collaborative work is subject to strict safety standards that require robot motion and forces to be sensitive to proximate human workers. Robot ...
Abstract: This article reports work-in-progress of a parallel kinematic robot development for construction with main focus on the concept phase. We assume the weight distribution of the proposed structure enables integration of robotic components into construction equipment while enabling tailoring of important characteristics such as accuracy, stiffness and workspace toward application ...
Abstract: The Design-to-Robotic-Production and -Assembly (D2RP&A) process developed at Delft University of Technology (DUT) has been scaled up to building size by prototyping of-site a 3.30 m high fragment of a larger spaceframe structure The fragment consists of wooden linear elements connected to a polymer node printed at 3D Robot Printing ...
Abstract: Building tasks that carry out on the building façade, such as painting, cleaning, and maintenance are often to be described as dangerous, dirty, and demanding. Recently, researchers and institutes are developing autonomous and semi-autonomous On-site Construction Robots (OCR) for those aforementioned applications. The most of façade working OCR is either ...
Abstract: This research presents a novel method for a data flow that synchronizes building information with the robot map and updates building components to their "as-built" states, in order to facilitate an on-site mobile construction process. Our experiments showcase mobile mapping and localization of a robotic platform featuring segmentation, plane association ...
Abstract: In recent years, new technologies have improved the monitoring of construction progress by using the as-planned BIM of a building and comparing it with the current state of construction (i.e., the as-is model) to identifying differences and generating a progress report. However, in most cases, the different components required for ...
Abstract: Recently 3D management solution utilizing BIM/CIM is expected for construction and inspection management. Especially for inspection utility, big data such as huge number of inspection pictures and sounds should be managed with location data of taking data and should be taken with high quality and resolution on 3D world. This ...
Abstract: Widespread use of autonomous robots in on-site construction has been limited because it is impractical to preprogram robots to perform quasi-repetitive tasks due to the relatively loose work tolerances and deviations of as-built work from the project design. Robotization of field construction work must thus be conceived as a collaborative ...
Abstract: This paper presents the developments achieved via the Social Cooperation Program "Intelligent Construction System," from three primary perspectives: environmental measurements, improvements in remote operability, and improvements in efficiency and automation of remote operation. For improvements in remote operation, environmental measurements of the disaster sites are critical. Therefore, a method to ...
Abstract: Concrete is a major contributor to the environmental impact of the construction industry, due to its cement content but also its reinforcement. Reinforcement has a significant contribution because of construction rationalisation, resorting to regular mats or cages of steel bars, despite layoutoptimisation algorithms and additive-manufacturing technologies. This paper presents an ...
Abstract: Delivering energy-efficient buildings or settlements has become a popular topic amongst architects, engineers, and building engineering physicists. There are many methods for improving building energy performances, both for new build projects and for retrofitting existing buildings. However, the construction industry faces some profound challenges to satisfy the increasing demand for ...
Abstract: With a growing number of high-rise buildings, glass curtain walls are widely used. In the long-term service of such curtain walls, the safety problems arise, such as cracks and spontaneous breakages of glass. Therefore, they need regular inspections to prevent accidents. Current inspection work for glass curtain walls in high-rise ...
Abstract: For thousands of years, the human construction process was mainly done by hand. In an era when automation technology is so mature, although some components of building components can be produced industrially, on-site construction and special component production still require a lot of manpower. But no matter how skilled the ...
Abstract: The participation of robots in building construction is already a global trend. Compared with the actual construction with a large number of manual participation at this stage, the stability of the robot construction process will greatly affect construction efficiency and construction accuracy. As a future material carrier for building industrialization, ...
Abstract: With the expanding size of additive manufacturing products, research pioneers start to explore 3D printing in the construction field. For 3D construction printing, quality means safety, cost, and efficiency. However, it is challenging to ensure quality via defect detection and deviation correction during the construction printing process. Conventionally, defect and ...
Abstract: Exact development progress estimation has been demonstrated to be basic to the accomplishment of a structure venture. The techniques for robotized development progress estimation proposed in past examinations have certain constraints in light of fragmented informational collections. The principle target of this research was to create a precise, basically completely ...
Abstract: Boom cranes are among the most common material handling systems due to their simple design. Some boom cranes also have an auxiliary jib connected to the boom with a flexible joint to enhance the maneuverability and increase the workspace of the crane. Such boom cranes are commonly called knuckle boom ...
Abstract: Fast and accurate inspection of elevated structures is imperative for sustaining the increasing traffic flow on deteriorating bridges. Despsite their importance, today's inspection processes still require dedicated equipment, impact traffic flow, and expose inspection personnel to safety concerns. The advent of Unmanned Aerial Vehicles (UAVs) and the ability to position ...