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为研究冷弯薄壁型钢梁柱节点的抗震性能,设计了四个不同构造的T形梁柱边节点进行试验研究。分析了节点板厚度和螺栓间距等对节点承载力、刚度、延性及耗能性能的影响。试验中四个试件的破坏模式相同,均为冷弯型钢的受弯承载力破坏,说明这种构造的边节点可以有效地传递梁柱弯矩。本文根据试验结果,对这种连接节点提出了设计建议。
In order to study the seismic behavior of cold-formed thin-walled steel beam-column joints, four T-beam edge joints with different structures were designed and tested. The effects of the thickness of the joint plate and the bolt spacing on the bearing capacity, stiffness, ductility and energy dissipation performance of the joint are analyzed. The failure modes of the four specimens in the experiment are the same, which are the failure of the flexural capacity of the cold-formed steel, which shows that the edge joints of this kind of structure can effectively transfer the beam-column bending moment. Based on the experimental results, this paper presents some design suggestions for this kind of connection node.