某大底盘不等高双塔楼连体建筑的地震响应分析

摘要

以某大底盘非对称双塔连体建筑为例,通过建立有限元模型,分析了结构的动力特性,得到了前30阶振型质量参与系数.采用时程分析法,输入x、y向水平地震激励,得到了结构的顶层的速度、加速度时程曲线,以及建筑底部剪力时程曲线,为结构设计提供了设计依据.%Asymmetric twin tower connecting buildings with large bases were studied. The FEM model was established. The dynamic characteristics of model was studied, achieve the mass participation factors of the first 30 mode. The ^-direction and y-direction level seismic excitation were input separately with the help of time-history analysis method. The displacements time-domain curve and the acceleration time-domain curve of the top of the structure are obtained, the bottom of the structure's overall shear forces time-domain curve also is obtained, the reference of structural design is provided.