为了研究某钢-混凝土组合结构构筑物关键节点的受力性能和破环机理,按照1:2.5的缩尺比模拟实际工程节点进行了节点的低周反复加载试验。本文介绍了关键节点试验过程,分析了组合节点的强度、延性、骨架曲线和滞回性能,根据试验分析结果提出了组合结构节点设计建议。 In order to study the mechanical behavior and failure mechanism of the key joints of a steel-concrete composite structure, the low-cycle repeated loading test of the joints was carried out according to the scale ratio of 1: 2.5. In this paper, the process of testing the key nodes is introduced. The strength, ductility, skeleton curve and hysteretic behavior of the composite joints are analyzed. Based on the experimental results, the design recommendations of the composite structures are proposed.