Development of BIM-Based 4D Simulation System for Construction Schedule Planning

Abstract

Construction schedule planning is an important duty for carrying out efficiently construction projects. Recently, 4D simulation technology linked to the BIM model has made it possible to visually check the installation procedure of equipment and piping. However, the task of setting construction schedule information requires a lot of time, especially in large-scale plant construction BIM model. In addition, the actual installation work includes temporary scaffolding assembly and disassembly. Therefore, construction schedule planners should consider an appropriate schedule that takes into account these temporary scaffolding works. In order to conduct 4D simulation including scaffolding, it is necessary to create and add 3D scaffolding model that is not included in the original BIM model. It also required a lot of time. This paper proposes the method for automatically setting installation procedures based on rules using BIM information and an automatic creation system for scaffolding. The first is a function that automatically sets the installation order using the location information of the equipment and piping in the BIM model and the rules of the expert. The other is the interactive creation of 3D models of scaffolding using BIM spatial information. This system automatically creates 3D models of scaffolding by calculating the required number of standard scaffolding by instructing the spatial position in the BIM model. With these functions, computer system automatically sets up a installation schedule and significantly reduces time for 4D simulation setup.