Experimental Study And Feasibility Analysis Of A New-typed Third Class High-rise Steel Structure Residential System

In recent years, the steel structure has the advantages of fast construction speed, green environmental protection, excellent seismic performance, and can maximize the residential space. Steel structure housing has been more and more people’s attention and love. Because of the influence of economic and environmental factors, the research of high rise steel structure residence is still relatively small in China. So the research and development of high rise steel structure is very important. In this context, this paper for 25-40 layer of the high-rise residential buildings, build the a new steel structure residential system, new residential bearing system: "box frame column and truss beam and eccentric support + building bearing plate system. This paper has done the following work for the new steel structure residential system:1. In this paper, a new assembly of steel structure residential system components, nodes, etc.. The stress characteristics and failure modes of the joints are obtained. In this paper, ABAQUS finite element analysis software is used to carry out the finite element analysis of the test node, and the results of the experiment and the finite element analysis are compared. Test and finite element analysis results show that: with end column axial pressure ratio increased, node failure mode from buckling of beam end gradually changed for end column instability; beam brace in the loading process to yield or crack, in the latter part of the design need to consider strengthening.2, using finite element software MIDAS / Gen of original scheme and the optimization scheme of large column net layout modeling analysis: identifying the two kinds of system of self vibration forms are flat torsion rule system, a self vibration period and mass participation ratio meet the requirements. The maximum storey displacement and the maximum inter storey displacement angle of the floor under various unfavorable conditions are also obtained. And it is obvious that the new system is optimized to the original system. The conclusion is drawn that the new system is feasible.3, the use of MIDAS/GEN for new steel structure residential buildings under rare earthquake Pushover analysis, test the new system in rare earthquake seismic performance. Under rare earthquake, the capacity spectrum and demand spectrum of the new system are obtained. The elastic plastic displacement angle corresponding to the performance points can meet the requirements of the specification. In the new system, the maximum inter story displacement, the maximum storey drift angle and the maximum inter story shear force meet the requirement of the elastic plastic deformation. The results show that the structure can meet the seismic requirements of Taiyuan area under 8 degrees(0.20g), and the results show that the new structure system has good seismic performance.4, comprehensive comparison of the two kinds of structural systems, technical and economic indicators, construction and other aspects of the factors, the new assembly type steel structure system for the optimal program, verify the feasibility of the new assembly type steel structure system.In this paper, a new type of steel structure residence system is proposed, which can provide some references for the research of the assembly structure, and also put forward the problem of further analysis.