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采用多模态Pushover分析法,能够充分考虑高阶振型对结构的影响和结构进入弹塑性阶段后振型会发生变化这两个因素。采用了多模态Pushover分析法进行研究,结构选取某市华润中心住宅,按照《中国地震动区划图》,以动力时程分析的计算结果为标准,采用MPA、MMPA和IMPA法进行了抗震性能分析,在极罕遇地震作用下,探讨了三种方法运用在剪力墙结构抗震分析的差异。
Multi-modal pushover analysis can take full account of the influence of the high order mode on the structure and the change of the mode shape after entering the elasto-plastic stage. The multi-modal pushover analysis method was adopted to study. The structure was selected from the CR Center residential buildings in China. According to the “China Earthquake Zoning Map” and the calculation results of dynamic time history analysis, the seismic performance was evaluated by MPA, MMPA and IMPA Analysis, in the extremely rare earthquake under the action of the three methods discussed in the shear wall structure of the seismic analysis of the differences.