结合逃生保障设计实现梁铰机制的探讨

Study on achieving the beam hinge mechanism based on the design of escape protection

理论分析与震害调查均表明,按照现行规范的柱端弯矩增大系数取值并不足以保证实现强柱弱梁的目标。地震逃生保障应作为结构抗震设计的重要内容,在框架结构的楼梯间等部位设置剪力墙,既可以减少在罕遇地震作用下的弹塑性层间位移角,又易于形成梁铰屈服机制。

The theory and the survey from the disaster in Wenchuan Earthquake show that valuing moment augment factor of column according to the criterion isn't enough to certify for the target to‘Strong Column and Weak Beam'.The protection of escape from earthquake should be an important content of structure seismic design.Setting shear wall on the staircase and in frame structure can reduce the elastic-plastic inter-story drift under strong earthquake,also be easy to form the beam hinge mechanism.