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为了研究部分包裹混凝土柱-型钢梁顶底角钢连接框架的抗震性能,以角钢螺栓边距和柱子轴压比为变量进行了试验研究。试验共设计了3个框架,通过施加低周反复水平荷载,分析研究了影响框架抗震性能的指标,研究发现:框架试件破坏顺序符合“强柱弱梁”的抗震设计原则;适当增大轴压比或减小角钢螺栓边距可以提高框架初始刚度及水平极限承载力;框架滞回性能较好且延性系数满足抗震规范相关规定,具有良好的抗震性能。
In order to study the seismic performance of the partially connected concrete column-type steel beam top and bottom angle connection frame, the corner bolt angle and the column axial compression ratio were used as variables. A total of three frames were designed and tested, and the indexes affecting the seismic performance of the frame were analyzed and studied by applying low-cycle repeated horizontal loads. The results show that the order of failure of the frame specimens conforms to the seismic design principle of “strong column and weak beam” Large axial compression ratio or reducing the bolt edge of angle steel can improve the initial stiffness and horizontal ultimate bearing capacity of the frame; the hysteretic behavior of the frame is good and the ductility coefficient meets the relevant provisions of the seismic code and has good anti-seismic performance.