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在实际工程中,钢框架连接性能往往介于刚性节点和铰接节点之间,呈半刚性连接。采用拟静力试验方法进行了角钢连接的半刚性连接钢框架在低周往复荷载作用下抗震性能的试验,研究了带腹板双角钢、顶底角钢半刚性连接钢框架在周期循环荷载作用下的滞回性能、延性和破坏机理等,为钢结构抗震设计提供了一定的理论参考。试验结果表明该钢框架由于节点部位转动刚度小于刚性连接,使结构的抗侧刚度降低,侧向变形增加,但是同时也改善了梁柱的内力分布,提高了其在周期循环荷载作用下的滞回性能和耗能特性,比刚性连接钢框架具有更好的抗震性能。
In practical engineering, steel frame connection performance often lies between the rigid node and the hinged node, which is semi-rigidly connected. The quasi-static test method was used to test the anti-seismic performance of the semi-rigidly connected steel frame with angle steel connections under low cyclic reciprocating loads. The effects of cyclic loading on the semi-rigidly connected steel frames with web double- Hysteretic behavior, ductility and failure mechanism, which provide some theoretical references for the seismic design of steel structures. The experimental results show that the rigidity of the steel frame is lower than that of the rigid connection, which decreases the lateral stiffness of the structure and increases the lateral deformation, but also improves the internal force distribution of the beam and column and improves its hysteresis under cyclic loading Back performance and energy consumption characteristics, than the rigid connection steel frame has better seismic performance.