STUDY ON THE AUTOMATIC GENERATION OF CONSTRUCTION PLANS UTILIZING BIM

Yoshida Tomohiro; Matsutani Kazuki

Abstract:

In Japan's construction sites, there is a demand for increased productivity in construction management operations. Furthermore, the aging of engineers is progressing, and there is a need to inherit the know-how of veteran engineers efficiently. The use of digital technology is considered effective in addressing these challenges. In construction planning at construction sites, the visualization of construction plans using BIM is practiced in many construction sites. The advantage of this visualization is that it can clearly express the construction sequence. On the other hand, a challenge is that creating the model takes time. The authors are working on the development of tools to automate the planning of construction based on BIM, to improve productivity and quality in construction planning. So far, three planning support tools have been developed for structural construction: (a) Automatic Drawing Tool for Rebar Models, (b) Concrete Construction Planning Tool, and (c) Steel Frame Erection Planning Tool, confirming that it is possible to create a construction plan using an actual construction BIM model. This report outlines the generation methods of construction plans developed for each tool. In the automatic drawing of the rebar model, the shape of the beam rebar can be automatically drawn based on the connection relationships of the members, significantly reducing the conventional drawing time. In the Concrete Construction Planning Tool, a method for automatically generating a division plan for the concrete placement area has been developed. As a planning support tool for steel frame erection work, a method has been developed to determine the order of erection work based on the connection relationships of steel frame members from the BIM model. The tools developed are considered effective for formulating the optimal construction plan by utilizing them in the initial stages of construction planning.