竖向刚度突变结构层间隔震地震响应分析

为了降低竖向刚度突变结构的地震响应，选取某一竖向刚度突变的框架结构，基于ETABS建筑结构分析程序，引入层间隔震技术，建立了有限元模型。应用结构动力学数值分析法，对竖向刚度突变结构进行固有特性和地震响应分析。结果表明：层间隔震能延长竖向刚度突变结构的固有周期；竖向刚度突变结构层间隔震具有降低加速度和层间位移角地震动响应的效果。

Story Isolation Seismic Response of Structure with Changing Vertical Stiffness

To reduce seismic response of structure with changing vertical stiffness, choosing one frame structure with changing vertical stiffness and introducing story isolation technology, the fi- nite element model was established based on ETABS. The structure inherent characteristics and seismic response were analyzed by adopting numerical analysis method. The results showed that the story isolation could prolong the natural period of the structure ; story isolation of structure with changing vertical stiffness could reduce the acceleration response and story displacement angle.