Research On Construction And Demolition Waste Of Railway Construction Project Time-Space Quantification Model

With the accelerated process of urbanization and industrialization, construction and demolition waste is rapidly increasing. To correctly handle and utilize construction and demolition waste, to maximize the realization of saving natural resources, is the key to the construction and development of green building in the field of infrastructure construction in China. Railway construction project is the major project in the field of infrastructure construction in China. Due to the large-scale construction period, it is necessary to lead to a large number of construction and demolition waste. To research the construction and demolition waste of railway construction project is the important aspects of realizing the development of green in railway.Based on the analysis of domestic and foreign research status of construction and demolition waste, combined with the linear characteristics of railway construction projects, this paper presents the method of railway construction project grids to analysis the time-space distribution of construction and demolition waste and to clarify the relationship between the grid and construction activities of the railway construction project and the relationship between construction and demolition waste and construction activities, construction materials. Construction and demolition waste classified system of railway construction project is the foundation of the research of construction and demolition waste in the construction of railway construction. The paper analyzes the domestic and foreign construction and demolition waste classified system, combined with the construction characteristics of railway construction projects, points out classification basis and classification principle of construction and demolition waste in railway construction project. Taking the railway construction of subgrade engineering as an example, the paper sets up subgrade engineering construction and demolition waste classification system. Based on railway construction project grids, the paper proposes the construction and demolition waste calculation model in railway construction project to help the manager to control the construction and demolition waste production.Finally, the model constructed in this paper is verified by using the data from subgrade engineering of Lanxin existing line in Urumqi railway station project, and the good results are obtained.