Optimal Arrangement Of High-rise Residential Building Of Shear-wall Structure And Its Performance-based Seismic Analysis

High rise residential building is an important part of urban construction. Due to good seismic performance and building height could be more than 100 m, the pure shear wall structure is a preferred structural form for high rise residential buildings. As for the component itself, the lateral stiffness of shear wall leg is bigger, the structural stiffness increases with the increase of wall section, and this leads to more seismic energy absorbed and much large horizontal loads bear by the structure itself, which is bad for seismic performance. But less wall section would make the strength or stiffness dissatisfy the requirements. Optimization of high rise residential buildings with shear wall could focus on the adjustment of stiffness. Three common layouts of pure shear wall structure in Pearl River Delta are studied by using the shear wall area ratio as the structural arrangement parameters. The main work is as follows.(1) Five common layouts of pure shear wall structure in Pearl River Delta are concluded, three types of architectural planes are selected and the value range of wall area ratio along weak axis are studied. The objects are located in Pearl River Delta, whose seismic precautionary intensity is 7 degree, length to width ratio is close to 2.0. Total height of building is 90 m with each storey is 3.0m. Three 30-storey residential buildings of shear wall structure are chosen as research objects, which are corresponding to elevator circumference, vestibule distributed and symmetrical distributed.(2) Focus on three types of architectural planes- corresponding to elevator circumference, vestibule distributed and symmetrical distributed, since the maximal interstorey drifts these three structures are far less than the specification limits, these structures are studied and optimized. Wall area ratio before and after optimization are concluded for studying the influence of wall area ratio along weak axis changes on the mechanical performance of structural periods, displacement and fundamental internal force. Based on the structural planes before optimization, the shear wall length is decreased and the influence of the decreased value on mechanical performance is studied.(3) In order to study the influence of wall area ratio along weak axis changes on structural seismic performance, MIDAS and Perform-3D are used for pushover analysis and dynamic elastic-plastic time history analysis of elevator circumference and vestibule distributed structural planes. As for the result of dynamic elastic-plastic time history analysis, two evaluation method, based on interstorey drift and component performance, respectively, are used for discussed the structural seismic performance under the rare earthquake load.(4) Study on the elevator circumference of transfinite high rise shear wall residential buildings, the wall area ratio before and after optimization are concluded for studying the influence of the decrease of wall area ratio on structural mechanical performance. The adjustment of software parameters and beam area are studied for offering suggestions of high rise shear wall structural design.