地震作用下高层框架-剪力墙隔震结构动力响应参数分析

针对一个10层框架-剪力墙基础隔震结构体系,考虑框架与剪力墙之间的相互作用,通过改变隔震层刚度及框架与剪力墙的刚度比,分析隔震层对地震波的滤波作用,以及考虑上部结构累积变形与隔震层大位移P-Δ效应,对高层框架-剪力墙结构的整体力学响应进行研究.结果表明:随着隔震层刚度的增加,传递到上部结构底部的加速度频谱幅值逐渐增大.随着框架与剪力墙刚度比增大,层间剪力的分布趋于均匀.上部结构累计变形产生的附加弯矩略大于隔震层本身P-Δ效应产生的附加弯矩.

Dynamic Response Parameters of High-Rise Frame-Shear Wall Isolated Structure Under Earthquake Action

Aimed to the interaction of the frame-shear wall,the stiffness of isolation layer and stiffness ratio between frame and shear wall were analyzed for a 10-story high-rise frame-shear wall foundation isolation structure.The effect of seismic wave on the seismic response of high-rise frame-shear wall structure was studied by considering the filtering effect of seismic wave and considering the large displacement P-Δ effect of the upper structure and the large displacement of the isolation layer.The results showed that,with the increase of the stiffness of the isolation layer,the amplitude of the acceleration spectrum was increased gradually at the bottom of the upper structure.As the stiffness ratio between the frame and the shear wall increases,the distribution of interlaminar shear tends to be uniform.The additional bending caused by the cumulative deformation of the superstructure was slightly larger than the additional bending moment produced by the P-Δeffect of the isolation layer itself.