某大底盘不等高双塔连体结构地震响应分析

摘要

采用SAP2000建立大底盘不等高双塔连体结构.通过对结构进行模态分析、反应谱分析和时程分析,得出结构的自振周期,再根据振型质量参与百分比分析出振型的平扭情况,根据结构的位移及各个楼层之间的位移角分析出结构整体刚度,进而评估抗震性能并判断结构是否满足安全性要求.%In this paper, conjoined double-tower with unequal height is established through SAP2000.Through three major structural analysis of modal, response spectrum and time history, the vibration period of the structure is obtained, and the flatness and twist of the vibration modes are analyzed according to the percentages of mass participation.The whole stiffness of the structure is analyzed based on the displacement of the structure in order to evaluate the seismic resistance and judge whether the structure meets requirements of safety.