Optimization Analysis Of Steel Concrete Composite Shear Wall In High-Rise Residential Building

Steel concrete composite shear wall originated in the steel plate shear wall is a new type of anti lateral force component is composed of steel plate shear wall with reinforced concrete. The shear stiffness, ultimate bearing capacity and high ductility and so on of steel concrete composite shear wall were better than the same size of steel concrete composite shear wall; and resolved the problem of pure steel plate shear wall stiffness small, poor stability, fire performance weak and high maintenance costs. At present, steel concrete composite shear wall structure system has not been widely applied to the ordinary high-rise residential buildings, to take certain measures to ensure the safety of seismic structures in high seismic intensity area under seismic action. Steel concrete shear wall structure system can not only improve the security of the structure and will not affect the function of the building. Therefore, in order to promote the application of steel concrete shear wall structure system and optimization of high-rise buildings in general, will be placed in ordinary steel reinforced concrete shear wall high-rise residential buildings, by location, length, etc. variables on security and economic structures optimization.The traditional shear wall structure optimization method is used to optimize the entity structure of a residential building. In this paper, apply a reasonable optimization methods and iterative computational analysis to obtain a more reasonable initial optimization program. PKPM and MIDAS software is applied to the calculation of two preliminary optimization analysis, and two kinds of software to analyze the inter storey displacement angle, displacement ratio, cycle ratio and shear weight ratio calculation results were compared and analyzed.Five level optimization solutions were obtained by changing the location, number and length of steel concrete composite shear wall. MIDAS GEN finite element analysis software simulation is applied to the facade plane and vertical steel concrete shear wall optimization analysis. By modal analysis and response spectrum analysis to determine the merits of each steel concrete shear wall optimization scheme, and elected the best security and economic optimization.In the case of frequently occurred earthquakes, time history analysis method was used to analyze the final optimization steel concrete shear walls and the original structure optimization program. This paper presents the seismic response of structures under three seismic waves along the height of the changes, and Time history analysis of the structure of the program to calculate the x, y direction of the layers of maximum displacement, maximum drift angle and shear layer, and before and after optimization were compared.The layer displacement and maximum drift angle of steel concrete composite shear were significantly lower than that of ordinary concrete shear wall optimization scheme, steel concrete composite shear wall shear layer was significantly greater than ordinary concrete shear wall shear layer, and the shear layer of two optimizations changes substantially uniform along the height, by the time history analysis comparing the results of two optimization schemes shows. Therefore, steel concrete composite shear wall not only improve the overall stiffness of the structure, but also increases the seismic performance of the structure, which is the same as the results of the seismic response spectrum analysis.