钢框架半刚性端板连接弯矩-转角滞回模型

针对采用端板连接的多层抗震钢框架在进行结构动力时程计算分析时所需要的连接的弯矩-转角(M-φ)滞回模型过于复杂、不便于应用的缺点,总结了目前国内外关于端板连接的M-φ滞回模型,对应用于多层抗震钢框架的梁柱端板连接节点提出了标准构造要求,以保证节点的强度和延性,并针对此类端板连接节点提出了4参数随动强化的M-φ滞回模型,给出了具体的计算方法。最后将该方法的计算结果与相关循环荷载试验结果进行了对比,结果证明了该模型的有效性。

Moment-rotation Hysteretic Model of Semirigid End-plate Connections in Steel Frames

Facing the complexity and application difficulty of moment-rotation(M-φ) hysteretic model in the dynamic time history analysis on the end-plate-connected multistory anti-seismic steel frame,domestic and overseas M-φ hysteretic models about end-plate connection were summarized,and suggestions on the standard details of semirigid end-plate connections used in the multistory anti-seismic steel frame were proposed to ensure the joint strength and ductility.For such end-plate connections,a 4-parameter kinematic hardening M-φ hysteretic model was proposed,and the corresponding detailed calculation method was given.The calculation results were compared with those obtained by relevant cyclic loading test results,and the validity of this proposed model was verified.