在高层建筑静力弹塑性分析(Pushover)中,侧向力分布模式的选取是一个关键问题,尤其受高阶振型影响比较显著的超限高层建筑。以天津某商业大厦超限高层建筑为工程实例,采用5种常见的侧向力分布模式进行分析,并与弹塑性动力时程结果进行对比,对超限高层建筑Pushover分析中侧向力分布模式选取提出了建议。最后以振型组合分布模式对该超限高层建筑进行了Pushover分析,研究了结构的弹塑性抗震性能,提出了一些设计建议。 In the pushover of high-rise buildings, the selection of lateral force distribution mode is a key issue, especially the over-limit high-rise buildings that are significantly affected by high-order vibration modes. Taking an overrun high-rise building in a commercial building in Tianjin as an example, five common lateral force distribution modes are analyzed and compared with the elasto-plastic dynamic time-history results. The lateral force distribution model Selection made recommendations. Finally, pushover analysis is carried out for the overrun high-rise building with mode shape distribution. The elasto-plastic seismic performance of the structure is studied and some design suggestions are put forward.