钢框架-带缝钢板剪力墙结构的地震响应

Study on seismic performance of steel frame-steel plate shear wall with slits

为确定钢框架-带缝钢板剪力墙在8度多遇和罕遇地震作用下的抗震性能,利用ADINA有限元软件,建立受荷条件相同的10层钢框架和10层钢框架-带缝钢板剪力墙模型,运用非线性分析方法对其在EL-Centro波、Taft波及人工波作用下的地震响应进行模拟分析。结果表明:震害不仅与地震波加速度峰值、持续时间有关,还与地震波波形有关;同种地震作用下,钢框架-带缝钢板剪力墙的薄弱层部位比钢框架的高,但同种结构在多遇和罕遇地震作用下的薄弱层部位大致相同;两种结构在8度地震作用下均未发生倒塌,且在同种地震波作用下钢框架-带缝钢板剪力墙的层间位移角小于钢框架,证明钢框架-带缝钢板剪力墙具有良好的抗震性能。

This paper is aimed at determining the seismic performance of steel frame-steel plate shear wall with slits exposed to frequent earthquakes and rare earthquakes of 8 degree. The research drawing on the finite element software ADINA builds a 10-storey steel frame model and a 10-storey steel frame-steel plate shear wall with slits model under the same load condition and simulates the seismic response of these models subjected to the EL-Centro wave,Taft wave and artificial wave by the method of nonlinear analysis. The results show that the damages are associated with seismic wave peak acceleration,duration,and the form of seismic wave; when acted on by the same earthquake,steel frame-steel plate shear wall with slits has a higher weak layer than does a steel frame,but the same structures under the frequent earthquake and rare earthquake have roughly the same weak layers; these two structures,subjected to 8 degree earthquake,experience no collapse; and the interlayer displacement angle is smaller in steel framesteel plate shear wall with slits than in the steel frame under the same earthquake,suggesting that steel frame-steel plate shear wall with slits boasts a better seismic performance.