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通过对3个平面KT型圆钢管搭接节点的静力单调加载试验,考察节点中内隐蔽部分焊接与否、腹杆搭接顺序等对KT型搭接节点的受力性能和破坏模式的影响,并最终考察其节点承载力。试验结果表明,平面KT型圆钢管搭接节点的受力性能、破坏模式均与间隙节点有所不同;隐蔽部分未焊接较隐蔽部分焊接的节点承载力有一定降低;受压斜腹杆作为贯通腹杆较直腹杆作为贯通腹杆的承载力略有降低。
Through the static and monotonic loading tests of 3 KT-type tubular overlapped joints, the influence of concealed part welding or not, the web overlap order and so on on the force performance and failure mode of KT-type overlapped joints , And finally examine the node bearing capacity. The test results show that the mechanical properties and failure modes of overlapped joints of plain KT-type round steel pipe are different from those of the gap joints. The bearing capacity of the unwelded joints is lower than that of the concealed part, Slightly lower than the web as a web through the web of the bearing capacity decreased slightly.