某超高层建筑的推覆分析

Pushover Analysis of the Super High-rise Building

为了研究某一高层建筑在大震作用下的损伤情况,本文采用Midas Building有限元软件对该建筑进行推覆分析.由计算结果知,该结构在大震作用下,最大弹塑性层间位移角为：X向1/219,Y向1/566,均满足规范[1~2]要求的最低标准1/120.根据计算结果,对本工程结构构件进行抗震性能评价,剪力墙、框架柱均未屈服,连梁与框架梁出现塑性铰,但均未达到CP状态[3].结果表明结构能满足抗震性能设计的要求,达到了大震不倒的抗震设防目标.

In order to study the damage under earthquake of a super high -rise building , the finite ele-ment software of Midas Building is used to analyze the pushover of a super high -rise structure in this paper . Based on the calculation results , the plastic interlayer maximum displacement angles of the model under earth-quake are X：1/219, Y：1/566 respectively, both meet the specification required minimum standard of 1/120. According to the seismic performance evaluation of the structural elements for the project , the shear wall , frame column did not yield .The related beam and frame beam appeared plastic hinge , but both did not reach the status of CP.The results show that the structure can meet the requirement of performance -based seismic design .It can fulfill the seismic fortification criterion ＆quot;no collapse under rare earthquake＆quot;.