钢混组合结构大跨越输电塔主柱和节点的试验研究

为了给工程设计提供参考依据，对钢混组合结构大跨越输电塔中的格构式角钢-钢管混凝土主管和钢管混凝土-钢管相贯节点等关键技术进行了试验研究，获得了格构式角钢-钢管混凝土主管的整体稳定性能、破坏模式和承载力以及钢管混凝土-钢管相贯节点的管壁变形、应力集中系数和承载力数据，并提出了承载力计算方法，可用于类似结构的设计中。

Test Study on Key Tubes and Connections of the Steel and Concrete Composite Structures for Long-Span Power Transmission Tower

In order to provide reference for the design of composite structure power transmission tower, the test study is carried out to investigate key technologies such as the concrete-filled steel tubes with lattice angle, and the concrete-filled steel tubular connection. These investigations produce results on stability, failure mode, and bearing capacity of the concrete-filled steel tube with reinforced lattice angle, as well as the chord-wall deformation, stress concentration factor, and bearing capacity of the concrete-filled steel tubular connection. Finally, a bearing capacity calculation methodology is proposed, which could be used for the design of similar structures.