中文摘要：

基于钢筋混凝土柱-钢梁组合节点试验,对3个不同构造节点的荷载-位移滞回曲线进行分析。根据试验结果,利用三折线模型和回归方法,建立钢筋混凝土柱-钢梁(RCS)组合节点的统一骨架曲线,并给出骨架曲线各线段的方程表达式。对不同加载阶段的多个循环进行回归分析,得到节点在不同阶段的刚度退化规律,建立RCS组合节点的恢复力模型,并利用所提恢复力模型对RCS组合节点进行计算模拟。结果表明,所得模拟曲线与试验曲线均符合较好,该恢复力模型具有较好的适用性。

英文摘要：

Based on the test of the reinforced concrete column-steel beam ( RCS ) , load-displacement hysteresis curves of three RCS composite joints with different details were analyzed.According to the test result, a uniform skeleton curve, expressed by trilinear model was established by using regression analysis.As well as, the equation of the skeleton curve divided by six parts was given respectively.The stiffness degradation rules of RCS joints were got through regressive analysis of the circulations in different loading stages.Then the restoring force model of the RCS composite joints was obtained.Examples showed that the skeleton curves calculated by the restoring force model coincided well with the test curves.Which also showed that the restoring force model had a good applicability.