Construction Simulation And Monitoring Of Long-span Steel Structures Based On BIM And VR Technologies

With the continuous advancement of China's comprehensive deepening reform,the transformation of the construction industry from an extensive growth model to a high-quality growth model has become inevitable.The application of new technologies,new methods and new achievements in construction can not only improve the production efficiency of the construction industry,but also effectively ensure the quality and safety of construction projects,and further improve the intelligence and information level of construction industry.BIM carries all the information in the planning,design,construction,operation and maintenance phases of the building,and leads the direction of information development in the construction industry.The rational application of BIM information to construction projects can provide important guidance for the optimization of construction plans,decision-making and monitoring of construction processes.Based on the engineering project of Shangcheng District Sports Center in Hangzhou City,this paper studies the application of several information technologies based on BIM technology in the construction of complex large-span steel structure engineering.Firstly,this paper discusses the application of BIM technology in the deepening design of steel structure.Based on the engineering design documents,the building information model of the Shangcheng Sports Center Project in Hangzhou is created.The Revit is used to deepen the design of the stadium truss?grid roof and parametrically model the detail nodes.These models is used to guide the processing and on-site construction of steel structural members.Secondly,the combination method of BIM and VR is studied,and the construction method of virtual construction simulation system of steel structure is proposed.The system is used to simulate the overall lifting construction process of large-span steel truss floor and reveal the problems that may occur during construction.Further,the solution to the potential problems is figured out to realize the construction visualization and construction guidance.Then,based on machine vision recognition technology and finite element simulation theory,a real-time stress monitoring method for the whole process of lifting the large-span steel truss floor is proposed,which is used to ensure the safety and quality of the installation of large-span steel truss floor.Finally,the method of combining BIM with multi-attribute fuzzy decision theory is studied.The feasible construction scheme of large-span steel structure grid roof of stadium is analyzed.A virtual simulation and multi-attribute fuzzy decision based on Navisworks software is proposed.The combination of theory and method optimizes the relatively optimal construction scheme for large-span steel grid roofs.