【摘要】 对于底部框架部分侧向刚度小,上部剪力墙部分侧向刚度大的框支剪力墙结构,提出在结构底部框架部分安装粘滞阻尼器的方法进行耗能减震控制,提高其抗震性能.运用大型有限元结构分析软件SAP2000建立了1栋21层框支剪力墙结构模型,对其进行了纯底部框架结构、普通落地剪力墙结构和安装耗能阻尼器状态下结构的地震时程分析.结果表明,耗能阻尼器能够有效地降低整个结构的地震反应,地震时输入结构的大部分能量由安装于底部的阻尼器耗散,从而保护了主体结构,耗能减震效果明显.更多还原

【Abstract】 As for frame-supported shear-wall structures,which have a character that the lateral stiffness of the frame part is so small compared with shear-wall part,so the energy dissipation and seismic mitigation method is proposed to solve the problem,aiming at improving the seismic behavior of these structures.21-story models of frame-supported shear-wall structure are erected with finite element analysis software SAP2000,for the three models of pure frame substructure,ordinary fall-to-ground shear-wall structure and build-in viscous dampers structure a seismic time history analysis is conducted.The results show that the viscous damper can efficiently reduce the seismic response of the structure,in the proceeding of the earthquake,and that most energy imported in the structure is dissipated by dampers,so the main structure is protected.The effects of energy dissipation and seismic mitigation are quite obvious.更多还原