方钢管混凝土柱在建筑结构中已经得到越来越广泛的应用。为研究方钢管混凝土柱与钢-混凝土组合梁(钢梁)连接的内隔板贯通式节点的抗震性能,对10个节点试件进行低周反复荷载试验。在此基础上,对其核心区受力过程、破坏形态、滞回曲线、骨架曲线、延性、刚度退化、强度退化和耗能能力等抗震性能进行较为深入的研究与分析。研究结果表明:节点试件的滞回曲线呈明显的梭形,且非常丰满,耗能能力强;内隔板贯通式节点具有较好的延性和承载力,即使在发生节点破坏的时候,也为延性破坏;节点在整个加载过程中刚度退化明显,强度退化很小,可以在抗震设防地区推广使用。 Square steel tube concrete columns in the building structure has been more and more widely used. In order to study the aseismic behavior of the inner bulkhead through-type joints connected by square concrete-filled steel tubular columns and steel-concrete composite beams (steel beams), low-cycle cyclic loading tests were carried out on the 10-node specimens. On this basis, the seismic behavior of the core zone such as the stress process, failure mode, hysteresis curve, skeleton curve, ductility, stiffness degradation, strength degradation and energy dissipation capacity are studied and analyzed in depth. The results show that the hysteresis curve of the joint specimen is obviously fusiform, and it is very plump with strong energy dissipation ability. The through-through joint of the inner diaphragm has good ductility and bearing capacity. Even in the event of node failure, Is ductile damage; node stiffness degradation during the entire load significantly, the intensity of degradation is small, can be used in the earthquake fortification areas.