Disassembly Of Primary-secondary Structure System Based On The Graph Theory Model

With the development of society, to accelerate the pace of urbanization, in urban planning, many of the buildings have reached their life cycle, facing building demolition problems, which resulted in the waste of resources and construction waste on the environment pollution and so on a series of problems. Therefore, how to make the building in the production, construction, demolition of the whole life cycle to achieve "green property", the key lies in the construction of the demolition of the design. This has become one of the main hot spots in the study of "green design", and it is also an important subject in the design of building structure.Primary and secondary structure system is a new type of super high-rise building structure system, its main feature is the huge structure, hierarchical structure, modular design. Based on these characteristics, the research of the main and secondary structure of the primary and secondary structure is of great significance. This article from removal mechanism and disassembly modeling, disassembly sequence planning and mechanical properties of the disassembly sequence analysis research on the following aspects:Research on disassembly modeling technology of primary and secondary structure disassembly system. By primary and secondary frame structure system as the research object, according to the structure of the connection between primary and secondary frame structure disassembly hierarchy analysis, clear primary and secondary frame structure system three disassembly hierarchy: layer within the time frame column level, module frame level, primary and secondary structure level. The mechanical properties of different levels of disassembly are analyzed, and the mechanism of disassembly and the judgment of partial disassembly sequence are studied. According to the different levels of structure connecting the judgment of the relationship and disassembly sequence and uses the graph theory model, primary and secondary frame structure system of different disassembly hierarchy is built based on undirected graphs and dir ected graph disassembly hybrid graph model.Research on disassembly sequence planning of primary and secondary structure system. Taking the primary and secondary frame structure as the research object, according to the different levels of disassembly infor mation model, the disassembly sequence planning is studied. Get the frame column level, sub frame module level and primary and secondary frame structure of a single layer. The mechanical property of disassembly sequence is analyzed and the efficiency of disassembly sequence is considered, and the optimized disassembly sequence is obtained. The layer within the time frame column level from the middle to sequentially removing, sub frame columns module level first partial disassembly of the sub frame columns from top down demolition, primary and secondary framework of hierarchy structure first and disassembly time frame module after from the down removing primary and secondary frame of the module of the main frame structure system disassembly sequence.Analysis on mechanical properties of primary and secondary structure system. Based on the existing research results, the changes of the mechanical properties of the disassembly sequence during disassembly process are studied. The influence of the primary and secondary structure of the primary and secondary structure in the process of removing the frame column level, the sub frame module and the primary and secondary frame modules are defined. The internal force of the main frame structure system in the process of d isassembly is summarized, which can provide some reference for the design of the main and secondary structure.