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为了研究含型钢边缘构件的混合联肢墙弱节点的抗震性能,对一个足尺混合联肢墙弱节点模型进行了低周反复荷载试验,对滞回曲线、骨架曲线、破坏模式、延性等进行了分析。结果表明,混合联肢墙弱节点滞回曲线饱满,耗能能力良好。利用ABAQUS软件对试件的性能进行了低周反复荷载作用下的有限元模拟,将计算结果和试验结果进行对比,两者吻合较好。在此基础上对节点进行了参数分析,结果表明:节点域钢腹板体积的大小对节点承载力有较大的影响,屈服荷载和极限荷载都随着节点域钢腹板体积的增大而增大,且近似地呈线性关系。
In order to study the seismic behavior of the weak joints of the composite joint limbs with profiled steel members, a low-cycle cyclic loading test was carried out for the weak joint model of a full-scale composite joint limb wall. The hysteresis curves, skeleton curves, failure modes, ductility and so on Analysis. The results show that the weak hysteresis curve of hybrid joint wall is full and its energy dissipation capacity is good. The ABAQUS software was used to simulate the performance of the specimen under low cyclic load. The calculated results are compared with the experimental results, which shows good agreement. Based on this, the parameter analysis of the joint is carried out. The results show that the size of the steel web in the node region has a great influence on the bearing capacity of the joint. Both the yield load and the ultimate load increase as the volume of the steel web increases Increase, and approximately linear relationship.