提出一种适用于梁贯通式支撑钢结构的节点模拟方法——等效构件法,该方法可以近似模拟节点刚度和强度,同时不至于忽略节点的滞回耗能。阐述了等效构件法的概念、基本假设和参数确定,利用该方法进行梁贯通式节点往复加载试验及梁贯通式支撑钢结构拟静力足尺试验数值模拟。结果表明,等效构件法在模拟节点性能及整体结构抗侧刚度、承载力、滞回耗能等方面有良好的适用性。 A new method of equivalent member method is proposed for the steel structure with through-beam support structure, which can approximate the stiffness and strength of the joint without neglecting the hysteretic energy consumption of the joint. The concept, basic assumptions and parameters of the equivalent member method were expounded. The reciprocating loading test of the beam through-beam joint and the pseudo-static full-scale test of the beam through-steel support structure were carried out. The results show that the equivalent component method has good applicability in simulating node performance and the lateral stiffness, bearing capacity and hysteresis energy dissipation of the whole structure.