Research On Prefabricated Building Cost Management Based On Lean Theory

Since the reform and opening up,China’s urbanization rate has been continuously improved,creating opportunities for the development of the construction industry.While the construction industry is developing rapidly,there are also problems such as environmental pollution and waste of resources,and the construction method is facing reform.The prefabricated building is characterized by energy saving,environmental protection and sustainable development,and it is the road from the extensive type to the sustainable type of construction industry.However,the prefabricated building faces many obstacles in the development process,and the high cost is the most direct factor hindering the development of the prefabricated building.The current research on fabricated building cost is mainly focused on the comparison with traditional building costs,ignoring the characteristics of the prefabricated building itself.Therefore,this paper introduces lean theory and analyzes the cost of fabricated buildings from the perspective of value stream.This paper first discusses the obstacles in the development of fabricated buildings and summarizes the research on the cost management of fabricated buildings.Then it summarizes the development history of the prefabricated building,explains the concept of the prefabricated building,analyzes the future development direction of the prefabricated building and discusses the composition of the prefabricated building cost and its influencing factors.Then,using the idea of lean management,using the value stream map research method in lean value management,the value flow analysis of the whole process of assembly building design,production,transportation and installation is carried out,and the value flow of the prefabricated building is optimized.Finally,the dependency structure matrix is used to describe the information flow in the prefabricated building activity.After clustering calculation,the assembly construction activities are merged into “blocks”,and the information integration is proposed to solve the problem of assembly construction cost.Through the above research,the waste of the prefabricated building construction process was identified,and suggestions for the optimization of the process were made.The information flow of each link in the construction process is analyzed,and the cost management of assembly building is strengthened through information integration,which provides reference for future research on assembly cost.