2001 Proceedings of the 18th ISARC, Krakow, Poland

Automation of construction machinery operation ? Investigations in Poland

E. Budny, J. Szlagowski, W. Trampczynski
Pages 1-5

The paper reviews some investigations carried in Poland in the field of construction machinery (excavators, jib cranes, overhead cranes etc.) working process automation. The following subjects are presented: operating movement control, dynamic modeling, construction of control algorithms, communication operator . machinery. At the end, the two examples of practical applications are discussed. The ...

Keywords: Building machinery, modeling, simulation, automation, fuzzy logic

Software architecture for cooperative buildings

Klaus Bergner, Andreas Rausch, Marc Sihling, Alexander Vilbig
Pages 1-8

In this paper, we propose an overall software architecture for the application domain of cooperative buildings. Based on an analysis of the predominant functional requirements, we develop a business-oriented conceptual framework, establishing a common understanding of a cooperative building?s entities and their relations. The framework is then mapped to an abstract technical software ...

Keywords: cooperative buildings, software architecture, business-oriented framework, componentware

Automation and robotization of mounting operations in building

Thomas Bock, Dmitrij Parschin, Alexej Bulgakow
Pages 1-4

Construction is of great interest for applying practical and theoretical results in the field of robotics. The Economic efficiency potential of using robots is defined by construction quantities, high level of manual work, hard and unfavorable working conditions. Mounting operations are the main focus for the practical use of robots. The lecture describes technological ...

Keywords: robots, construction, building, kinematics, control

Robot orented design of a rapid joining system with integrated servicing

Thomas Bock
Pages 1-7

The concept of ?ROD?(1) or robot oriented design had been developed during my doctorate dissertation at the university of Tokyo between 1984 and 1988. It has been further developed in order to quickly assemble buildings which can be moved into only 24 hours after the beginning of their construction. Time is money, all ...

Keywords: Robotics, Construction, building system, joining system, design

A theoretical sensor model for hydro spurt concrete cutting

Alexej Bulgakow, Galina Dibrowa, Alexander Drownikow
Pages 1-4

A theoretical sensor model of a nozzle-cover type intended for control and often change a distance from a nozzle cut to a treated surface is considered in this article. The specified feature of this sensor that it can be used as a transformer of a water spurt formed in a circle while flowing ...

Keywords: sensor, building, model, hydro spurt cutting instrument

An automatic mechatronic complex for erecting monolithic structures

Alexej Bulgakow, Oleg Parschin
Pages 1-5

Monolithic construction holds one of the leading places in modern civil engineering. All advantages of monolithic construction are fully displayed when using slip forms and erecting high-rise buildings and structures. The most effective application of slip forms is revealed while erecting chimneys, television and observation towers, tower silos, cooling towers, methane tanks, stiffening cores ...

Keywords: automatic, mechatronic, monolithic construction, building, slip form

System modeling of object-oriented construction process simulations

Rong-yau Huang, Bing-Chi Hsieh
Pages 1-5

The CYCLONE methodology has become well established and its six standard modelling elements provide a simple, straightforward tool for the study of various construction operations. Many construction-specific simulation systems employ CYCLONE or CYCLONE-like symbols for system modelling. However, CYCLONE?s simplicity also limits its functionality in model construction operations in terms of realism and accuracy. This ...

Keywords: simulation, modelling, construction, CYCLONE

Universal digital environment model for computer integrated road construction

Jaroslaw Jurasz
Pages 1-6

As the computer supported road construction systems evolve, the issues of compatibility and inter-operability start to play more important role in than the limitations posed by computing resources. The paper discusses modelling methods currently in use and presents a novel, efficient and flexible environment description for on-board systems in this context. The results of ...

Keywords: computer integrated road construction, ribbon, digital terrain model, environment model, road product model, on-board computer

Development of a laser-based system for testing construction aggregate

Hyoungkwan Kim, Carl T. Haas, Alan F. Rauch, Craig Browne
Pages 1-6

A Laser-based Aggregate Scanning System (LASS) was developed at the University of Texas at Austin for rapid characterization of various properties of construction aggregates. For the determination of shape and size parameters, the ?virtual proportional caliper? and ?virtual sieve? concepts are introduced, where 3D particle data are rotated about different axes to find elongation ...

Keywords: aggregate, automation, group texture analysis, laser profiling, LASS, virtual proportional caliper, virtual sieve, wavelet analysis.

Framework for an intelligent field operation system (IFOS): Part 1 ? System architecture

Sung-Keun Kim, Jeffrey S. Russell
Pages 1-7

In spite of the difficulties in designing and implementing automated technologies, the needs for improvement in safety, productivity, and quality have motivated several research efforts in the area of automation and robotics in construction.

Keywords: Intelligent system, Automated planning, Agent-based system, Field operation

Framework for an intelligent field operation system (IFOS): Part 2 ? Task identification and planning methodology

Sung-Keun Kim, Jeffrey S. Russell
Pages 1-6

This paper presents an automated task identification and planning methodology for IFOS described in Part 1.

Keywords: Intelligent system, Automated planning, Agent-based system, Field operation

Development of adaptive roof structure by variable geometry truss

Kohei Kurita, Fumihiro Inoue, Noriyuki Furuya, Takashi Shiokawa, Michihiro Natori
Pages 1-6

Moveable structure has been used for drawbridge and all-weather stadium with retractable roof. These structures move on the rail or turn around the hinge, and these behaviours are monotony and simplicity. However, near future, the shape of construction changes variously as harmonising with surroundings. In order to realize new constructions, we found VGT (Variable ...

Keywords: VGT, Adaptive Structure, Roof Structure, Shape Control, and Hemisphere Dome

The application of knowledge management for construction using mobile PDA system

Sheng-Tai Lin, Yu-Chenng Lin, Hui-Ping Tserng
Pages 1-6

Personal Digital Assistants (PDA) and World Wide Web (WWW) that are rapidly gaining popularity are fundamental technologies for a vision of information access for anyone, anytime, anywhere. However, there are few applications for on-site engineers to use the Personal Digital Assistants (PDA) in the construction industry. In the view of construction productivity, the ...

Keywords: Information Technology; PDA (Personal Digital As sistant); Knowledge Management

Techniques for seismic isolation retrofit work while a building is being used

Takashi Miyazaki, Akira Umekuni, Yasuyoshi Miyauchi
Pages 1-6

Recently, construction by which the building is made strong without stopping the function of it increases. Attention has especially gathered to seismic isolation retrofit work in that. It has the advantage that can be constructed differing from other methods, and changing neither the design nor the function of the building. For constructing while ...

Keywords: Seismic isolation retrofit, Seismic safety, Laminated rubber bearing, Low noise and vibration, Cutting method, Manipulator, Steel pipe pile

Knowledge-based generation of operational procedures for construction of wood structures

Nakajima Masao
Pages 1-6

This paper focuses on non-numerical information such as operational procedures for processing and assembling members used in wooden construction systems and aims at developing a knowledge-based system (KBS) for generation and control of this information. The process involves dividing the building construction system into basic units, defining and describing those units, and then inputting ...

Keywords: knowledge-based system, generation system of activity, operational procedures, building construction system, wood structure, Prolog

A three-state-model of e-enterprise for Construction Contractor ? a case learned in Taiwan

Shin-Jung Pan, Shu-Yi Kuo, H. Ping Tserng
Pages 1-5

Taking advantages of the advanced information technology, more and more construction businesses begin to adopt the large scale information system, such as web-based project management system, Enterprise resource planning (ERP), supply chain management (SCM), electronic knowledge management (eKM) and so on, to improve the management efficiency and productivity. However, it seems there is no ...

Keywords: No keywords

The application of 3D and interference detection in construction engineering

Yan-Chyuan Shiau, Ming-Teh Wang, Chung-Ham Yang
Pages 1-6

Skyscrapers and Hi-tech factories are a hot topic among construction industry nowadays. As the function of buildings become more sophisticated, subcontractors of a project are more closely related. It is difficult task for designers to present a 3D construction project at a 2D level especially when the building is full of equipments and ...

Keywords: Construction Automation, Virtual Reality, Interference Detection, Cost Control, Construction Management.

Optimization of power inputs of pneumotransport and storing of fine-grained building materials on the base of adaptive microprocessed system

Tatjana Souetina, Thomas Bock, Alexej Bulgakow
Pages 1-3

Transport systems are the essential parts of technological processes of building and provide the spatial and temporal conformation of work of all devices and units of production. Transport systems are not passive elements of structure of production circuit; they affect important indices of work of main transformed units, determining the extent of their ...

Keywords: optimization, adaptive system, pneumo-transport, building materials

Object identification using bar codes based of LADAR intensity

William C. Stone, Geraldine S. Cheok, Karen M. Furlani, David Gilsinn
Pages 1-6

Tests of a novel concept for tracking construction components were carried out at the National Institute of Standards and Technology. The approach makes use of laser radar and retro-reflective barcodes attached to manufactured building materials. Tests were conducted for various barcode sizes and spacings through a variety of ranges to a maximum of 40 ...

Keywords: LADAR, object recognition, pattern recognition, construction automation, bar codes, intensity, image processing.

The NNM ? method and a model of co-operation between an automated center with concrete mixing-plant and truckmixers

Andrzej Wieckowski, Wladyslaw Buczkowski, Miroslaw Skibniewski
Pages 1-6

The Network Numerical Modelling (NNM) methods was developed to aid in project mapping (representation), planning, analysis and control

Keywords: Project model, Network, GERT, construction

Approximate cost estimating system for construction of steel mill

Sungkwon Woo, Youngsoo Jung, Younghwan Lee, Bok-Nam Lee
Pages 1-6

Enhancing the accuracy of an approximate cost estimate is a critical issue since the estimate ordinarily predicts the total cost of a project with insufficient project information. In order to facilitate the approximate cost estimate process, this paper proposes a computer-based integrated system that enables the flexibility to varying amount and accuracy of ...

Keywords: approximate estimate, historical database, adjustment factors, information system

IT applications in Taiwan construction firms

Wu Tao-Sheng (Doxon), Wang Ming-Teh, Kuo Shu-Yi
Pages 1-7

Advances in information technology (IT) are promoting corporations in various industries to improve their business process. Electronic business is also a current trend for the construction industry. Before adopting more new information technologies in a construction firm, the decision maker should know the firm's present conditions of IT applications, evaluate its real needs of ...

Keywords: IT applications, computerization, Information system

Risk evaluation in road construction with neural networks and Monte Carlo simulation

Wu Tao-Sheng (Doxon), Chou Hui-Yu
Pages 1-6

This study shows the nature of weather risk with a sample project with different networks. The total duration will change by different networks, the starting month, and the different sites. To analyse how to evaluate the risk of weather, by using Mote Carlo simulation and Neural Network to predict potential delay, this study ...

Keywords: Monte Carlo simulation, neural networks, risk management, weather, road construction

Improving performance of shield TBM for subway tunnel passing through riverbed

Gyujin Bae, Hoon Kim, Koouho Hwang, Seungil Cheun, Kihoon Choi
Pages 1-6

As a technology of mechanical excavators is developed, an application of Shield TBM becomes variable and wide. As a result, shield TBM can be applied most geological conditions, such as soil condition with high water pressure, hard rock condition, and mixed condition. However, an extensive and detail geological investigation should be conducted to select ...

Keywords: shield TBM performance, advance rate, cutter consumption, downtime

A model of supply chain management for construction using information technology

Yu-Cheng Lin, H. Ping Tserng
Pages 1-6

The objective of supply chain management is to quickly obtain real-time information, minimize cost, increase levels of service, improve communication among supply chain components, and increase flexibility in terms of delivery and response time. In the traditional construction industry, construction processes are always labor-intensive, manual, and time-consuming. With the advent of the information technology, ...

Keywords: Information Technology; Supply Chain Management; Internet; Intranet; Extranet; Mobile device; PDA

The design and development aof an automatic construction crane

M. Abderrahim, A. Giménez, A. Nombela, S. Garrido, R. Diez, V.M. Padrón, V. Balaguer
Pages 1-6

This paper describes the design and development of an automatic crane for use in the assembly of modular buildings elements in the construction site. The automatic system was developed using a commercial crane, which was modified by adding the adequate sensors, servomotors and an advanced control system. The new crane system is meant ...

Keywords: crane automation, construction automation, modular building

Manipulator for removing debris and other work after extreme events

Victor Balagula, Edvard Smoljanitski, Oleg Sanko
Pages 1-3

This paper presents a description of the basic model of a manipulator for removing debris and work after extreme events. The manipulator consists of different tools which can make all necessary operations to save people in extreme situations.

Keywords: manipulator, blockage, debris, motor-powered grab, two-part bucket

Remote control of working machines with vision system

Adam Bartnicki, Stanislaw Konopka, Franciszek Kuczmarski, Andrzej Typiak
Pages 1-6

Herewith it was presented as follows: the general structure of system remote controlling operations, working machines while using vision system and examples of the system results

Keywords: No keywords

Structural modification of synthesised vibration bar-system as an introduction to optimal control thesems systems

Andrzej Buchacz
Pages 1-6

Basing on the design of continuous free systems with definite frequency spectrum, with cascade structure, the dynamical flexibility of such systems has the alternating: pole, zero, pole, zero, etc. Nevertheless, the frequency with the zero value is always a pole. On the other hand, in the case of systems with cascade structure but ...

Keywords: dynamical characteristic, hypergraph, cascade structure of mechanical system

Rapid local area modeling for construction automation

Yong-Kwon Cho, Carl T. Haas, Kamel S. Saidi, Katherine A. Liapi, S.V. Sreenivasan
Pages 1-6

Construction equipment is rapidly being retrofitted with robotic capabilities for improved control and safety. To operate this equipment effectively, an operator must constantly relocate the equipment and position objects within the work environment. Current commercially available equipment technology does not provide real-time information to the operator and requires costly and computationally intensive computer hardware ...

Keywords: construction automation, man-machine interface, graphical simulation, manipulator, CAD, laser rangefinder

Estimating the degree of compaction of asphalt using proprioceptive sensor and dynamic model

Arnaud Delclos, Pierre-Olivier Vandanjon, François Peyret, Maxime Gautier, Michel Froumentin
Pages 1-6

The paper is about a new method, aiming at estimating in real time the compaction degree reached by an asphalt compactor. This method was developed at LCPC in the frame of a European project called OSYRIS (Open SYstem for Road Information Support). This method is based upon various measurements using proprioceptive sensors and a ...

Keywords: dynamic model, asphalt compaction, automation, resistive effort

Automation of driving in tunnelling

Glebov N.A., Pritchin S.B.
Pages 1-2

This paper deals with the problems of automation in the construction of mine workings and specialized tunnels. The problems under consideration are mathematical simulation of the automation object (tunnel driving set), synthesis of the control algorithm as well as the whole system study. Technical characteristics of the developed system for automatic control of tunnel ...

Keywords: mine working, tunnel, tunnel driving set, high maneuverability, automated control System.

Structural layered approach to design of experimental control system for an automated excavator

Henryk Dobrowolski
Pages 1-4

Some aspects of systematic design of computer control system for a hydraulic excavator are discussed. A concept of software layers is presented, which can help to lower project cost and to improve the ability of system to be modified and extended.

Keywords: hydraulic excavator, computer control, software design

Non-smooth problems of mechanics of machines for construction

Wieslaw Grzesikiewicz, Jerzy Piotrowski
Pages 1-6

This paper presents a mathematical formulation of non-smooth problem of mechanics. Some non-smooth characteristics of chosen elements are presented on the diagrams. These elements serve the purpose of representing unilateral limiters of displacements and velocities, dry friction and pseudo-elasticity. The main feature of the non-smooth problem is that for its formulation the non-differentiable functionals ...

Keywords: non-smooth mechanics, dry friction, limiters, machines for construction

The sirius robot platform for tool handling on large vertical surfaces

Hortig Justus, Elkmann Norbert, Felsch T., Sack M., Böhme T.
Pages 1-4

Recent technological developments have promoted robots beyond tasks associated solely with factory automation. The Fraunhofer Institute of Factory Operation and Automation (IFF) has developed a modular robotic platform called SIRIUS for the dull and dangerous processes associated with work on large vertical surfaces. Its design features are described and its utilization as a facade ...

Keywords: service robot, climbing robot, tool handling, stride control, facade cleaning, maintenance, vertical surfaces

Computer aided design of loader work attachment for construction machines

Hieronim Jakubczak
Pages 1-5

The design of a work attachment for wheel loaders and face-shovel hydraulic excavators using a specialised software is presented in the paper. The software makes the design process easier due to various analyses regarding the kinematic and kinetic characteristics of the work attachment and the machine. The significant feature of the software consists ...

Keywords: loader, work attachment, design, software

Open system for road information support

Agata Ligier, Johannes Fliedner, Juha Kajanen, François Peyret
Pages 1-6

Open System for Road Information Support is an open, supportive system for construction, maintenance and rehabilitation of a road, mainly focused, but not limited to the flexible pavement (asphalt). The project aims towards an European standard for a work documentation and work support system for a road worksite.

Keywords: road construction, site information systems, digital work documentation, road product model, quality management , XML, CAN, Web

Modelling of the crane jib lowering system with the fuzzy logic controller

Edward Lisowski, Grzegorz Filo
Pages 1-6

In this work application of the fuzzy logic controller in the hydraulic lowering system of the self-propelled crane jib, with a proportional relief valve used as a counterbalance valve is presented.

Keywords: Self-propelled crane, crane jib lowering system, proportional relief valve, fuzzy logic controller, computer simulation program

Synchronous drive of machines unit with application of flow divider

Edward Lisowski, Pawel Brandys
Pages 1-6

The paper presents an analysis of control of heavy duty machines unit with hydraulic actuators.

Keywords: modeling, sumlations, hydraulic drive and control

The influence of structure of mobile construction manipulators on their kinematic and dynamic characteristics

Stanislaw Michalowski, Andrzej Sobczyk, Witold Trzaska
Pages 1-6

For the purpose of studies, a model of a wheeled, construction manipulator was developed and dully analysed.

Keywords: construction manipulators, flexibility, active damping, position control

Problems of manipulator rotation control, based on automation of miniexcavator

Tomasz Miroslaw, Jan Szlagowski, Zbigniew Zebrowski
Pages 1-6

In this paper advantages of manipulator hydraulic drive automation ware shown. These manipulators are used in unmanned remote controlled vehicles. Problems of movement parameters measurement was upon the question. A simplified method of choosing position sensor for speed and position feedback with lengthened sampling period of hydraulic drivers was presented.

Keywords: mini excavator, hydraulic drive, acceleration measurement, speed measurement, position measurement, positioning accuracy, sampling time., servo vale

Standardization of information system for civil-engineering sites

François Peyret, Hiroaki Miyatake
Pages 1-5

More and more civil-engineering sites, and especially road construction are experimenting all over the world new kind of systems aiming at improving quality and efficiency of the construction tasks. These systems make profit of the new technologies of information and communication, still rarely used on the sites. Most of them bring partial solutions but ...

Keywords: information technologies, civil-engineering sites, computer integrated construction, product model, logical analysis

Microwave correlative-extreme flowmeter of dielectric granular and powder materials in pneumatic transportation

Nikolay M. Plotnikov, Vladislaw V. Khodykin
Pages 1-5

The paper represents results of theoretical and experimental research in the field of constructing noncontact flowmeters of granular and powder materials in pneumatic transportation. The task of flow measurement amounts to measuring the average flow density within the controlled profile and flow velocity. The possibility of testing flow average density by microwave sensors is ...

Keywords: Microwave density sensors, correlative-extreme method of velocity measuring, noncontact microprocessor-based flowmeter

Track?s slip either relative difference of displacements (RDD) during dozer?s turning

Marek M. Poncyliusz
Pages 1-6

The field investigations of SG-15HS dozer turning were described in this paper. Mutual dependency between slip and relative difference of displacements (RDD) was tested both for separate signals from left and right track and for theirs mean value. The procedure of using two side measuring wheels was shown and then discussed. Its advantages and ...

Keywords: Dozer, track?s slip, turning, relative difference of displacements, GPS

Optimal control of penumatic manipulators for construction application

Michael Rachkov, Lino Marques, Aníbal T. de Almeida
Pages 1-6

problems of pneumatic manipulators positioning in angle trajectories and in long linear trajectories for construction applications are discussed. Optimal positioning of a pneumatic manipulator of angle trajectories with minimum control energy consumption is solved. An implementation of the control system is presented. A control algorithm for a pneumatic manipulator of ...

Keywords: automation in construction, pneumatic manipulators, positional accuracy, angle trajectory, linear trajectory, optimal control, experimental optimisation.

Motion control for bucket of wheel loader based on shape of pile and resistance force

Sarata Shigeru, Osumi Hisashi, Hirai Yusuke, Matsushima Gen, Tsubouchi Takashi
Pages 1-6

For autonomous scooping operation by wheel loader, a method for trajectory generation and motion control of bucket at scooping operation is proposed. Prior to scooping, threedimensional shape of pile is measured by stereovision system with two CCD cameras. The initial trajectory model is modified according to the shape of pile. During scooping, the control ...

Keywords: Scooping operation, Wheel loader, Scooping trajectory, Bucket motion control, Column model, and Trajectory planning

The use of simulation results in the economic analysis of robotized construction tasks

Derek W. Seward, Khaled Zied
Pages 1-6

Adequate economic justification is a key requirement for the implementation of robotic systems in the construction industry. In the present work the concept of off-line simulation is used to provide the user with a rational approach for economic decision making with regard to the use of robotics. The proposed off-line simulation process ...

Keywords: Construction Robotics, Economic justification, Simulation, Cost analysis

An internet-based management information system for the logistics of highway construction and maintenance vehicles

Fu-Yih Shih, Yueh Liang, Chih-Shiung Wu, Chen-Chyi Lin
Pages 1-5

An Internet-based management information system for the logistics of highway construction and maintenance vehicles has been designed and implemented by using Microsoft Visual FoxPro. This presented system is not only useful for the logistics of highway construction and maintenance vehicles but also helpful for the prevention of scandal intentions and activities

Keywords: logistics, management information system, database management

Predictive control systems in construction equipment

Miroslaw Skibniewski, Stanislaw Michalowski, Andrzej Sobczyk
Pages 1-6

In surface grading operations the final surface profile depends on the series of preceeding tasks. For example, when the road surface is levelled with the use of a numerically controlled grader, it is necessary to consider subsequent compacting tasks as well, as the final result should include a uniform compaction ...

Keywords: road construction, earthworks, asphalt applications, compaction vibrations, surface levelling, automatic controls

Adaptation of fuzzy logic controler to hydraulic backhoe excavator

Andrzej Szalek, Jan Szlagowski
Pages 1-4

Results of research on automation of a hydraulic backhoe excavator are described in this paper. The excavator works under an algorithm, which maximises the working force. A fuzzy logic control system is used to realise this algorithm.

Keywords: building machinery, hydraulic excavator, modelling, simulation, automation, fuzzy logic

Automatic system for boulder breakage by using force sensors and image processing

H. Takahashi, T. Monden, S. Saito, k. Tateyama, R. Fukagawa
Pages 1-7

In this study, the automatic system for boulder breakage by using force sensors and image processing is investigated. In order to carry out the full automation of the boulder breakage, the following three subtasks have to be automated: 1)detection of the boulder, 2)control of the chisel to move to the boulder and 3)carrying ...

Keywords: Robotics, Boulder breakage, Image processing, Force sensor, Breaker

The automatic load transportation by wind disturbance

Jerzy Tomczyk, Jacek Cink
Pages 1-5

The idea of the automatic handling of the flexible suspended load by cranes working in different air condition has been presented in the paper. The microprocessor control systems worked out for cranes give the possibility to automatic position the handling load in the every point of the three dimensional transport space with simultaneous elimination ...

Keywords: cranes, handling materials, automation, control, microprocessor, wind disturbance

Digital control system to generate energetically advantageous cutting tool trajectories for hydraulic excavators

Wieslaw Trampczynski, Leszek Plonecki, Wieslaw Gierulski, Julian Cendrowicz, Kazimierz Sokolowski
Pages 1-6

The computer control system for the backhoe hydraulic excavator is presented and discussed in the paper. It can be used to help the operator during the shoving process to generate energetically advantageous trajectories obtained as automatic tool leading along the previously generated slip lines. The results of experiments, carried out for the loading type ...

Keywords: Digital control, hydraulic excavators, and energetically efficient trajectories

A study of carbon dioxides exhausted extracting from remote sensing image in Taiwan city by ANN method

Kuo-Chung Wen, Chung-Hao Chiang
Pages 1-5

Nearly there are a lot of countries to limit emission of CO2, and depend on plants of urban to filter the air. It is very important to study ?Carbon Dioxide's exhausted? in 21?Th century. Now there are a lot of application in land monitor and image analyze using satellite images, but how to ...

Keywords: Carbon Dioxide's exhausted, ANN, RS, Urban Spatial Structure, Normalized Difference Vegetation Index (NDVI)

Automatic sheet-piling system for isolation barriers against traffic-induced ground vibrations

Jori Montonen, Erno Keskinen, Meholi Bahrekazemi, Anders Bodare, Robert Hildebrand, Michel Cotsaftis, Yrjö Raumisto
Pages 1-6

Structural vibrations induced by train traffic have to be damped to increase the quality of life in buildings close to railway tracks. The problem becomes more serious in places, where the propagation speed of Rayleigh surface waves is low due to the low elasticity of the soil. To overcome ...

Keywords: railway foundations, wave barrier, ground vibrations, sheet piling

Experiment on a stable motion of the backhoe excavator bucket

E. Budny, M. Chlosta, W. Gutkowski
Pages 1-5

Recently, there is an increasing interest in controlled excavation processes. The modern control software and hardware make hydraulic systems more suitable for enhancement of a large spectrum of human efforts. This is mainly through control of repetitive processes, such as trenching and drilling, requiring constant attention of machine operators.

Keywords: No keywords

A study of information integrated construction

Shirai Takashi, Fukuda Yuko, Muramatsu Toshimitsu
Pages 1-5

In order to control execution based on data from construction machinery, and thus computerize and rationalize project execution, information integrated construction systems are being developed[1]. Meanwhile, to perform tele-operation of construction machinery, telecommunication systems and mobile network systems for construction are being developed. However, these systems being developed for civil engineering are not compatible; standards ...

Keywords: tele-operation, unmanned construction works execution, universal transformer