框-剪结构中的框架在大震下的失效概率分析

Failure Probability Analysis of Frames in Frame-shear Wall Structures under Rare Earthquake

从震害实际情况出发,对框-剪结构中的框架采用柱铰破坏模式进行了在地震作用下发生层倒塌的失效概率分析,并通过基于位移的设计方法研究了框-剪结构大震对于小震的剪力放大系数,然后进一步研究随着地震作用的加大框架倒塌失效概率的变化情况,探讨了通过柱端弯矩增大系数来降低大震时框架倒塌失效概率的方法。

Considering the actual situation of earthquake,the column hinge failure mode is adopted to conduct the failure probability analysis on the frame layer collapse in frame-shear wall structures under seismic effect,the amplification coefficient of shear that rare earthquake relative to small ones in frame-shear wall structure is discussed through the mode based on displacement,further research is carried out on the change of failure probability of frame in frame-shear structures responding to the increase of seismic effect,the method to reduce failure probability of frame in frame-shear wall structures under rare earthquake through moment augment factor of column is discussed.