框支剪力墙结构在大震下的失效概率分析

Analysis Failure Probability of Shear Wall Supported Frame Structure under Rare Earthquake

对不同框支框架层数的框支剪力墙结构在地震作用下发生层倒塌的失效概率进行了分析,并用基于位移的模型得出了框支剪力墙结构在大震下相对于小震的剪力放大系数,揭示了随着地震作用增大的框支框架发生倒塌失效概率的变化情况,探讨了通过柱剪力增大系数、型钢混凝土柱和柱端弯矩增大系数等方法降低大震时框支框架层倒塌失效概率的有效性,并建议一层转换时框支柱应推广使用型钢混凝土柱。

The failure probability analysis on the frame layer collapse in different shear wall supported frame structures under earthquake is carried out,and the amplification coefficient of shear that rare earthquake relative to small ones in shear wall supported frame structure is derived through the mode based on displacement. Further research is made on the change of failure probability of frame in shear wall supported frame structure responding to the increase of seismic effect. And the method to reduce failure probability of frame under rare earthquake by shear-enlarged coefficient,steel reinforced concrete column and bending-enlarged coefficient is discussed.Finally,the steel reinforced concrete columns are suggested in first layer transfer shear wall supported frame structure.