河北工业科技2024，Vol.41Issue(4)：247-254,8.DOI:10.7535/hbgykj.2024yx04002
外包缩口钢套螺栓连接节点力学性能试验研究
Experimental research on mechanical properties of bolted joints with external necking steel sleeve
摘要
Abstract
In order to solve the problems of complex regional structure of traditional concrete prefabricated beam-column joints,such as the projection of steel members affecting the spatial layout,a beam-column joint with external contraction steel sleeve connected by end plate bolts was proposed.Three fabricated joint specimens and one cast-in-place joint specimen were designed and manufactured.Through monotonic loading test of beam-column joints,the failure mode and mechanical properties of the joints were explored.The results show that the main failure mode of assembled joints is the bending failure of beam end,and the steel sleeve in the core area has not been obviously damaged.Narrowing the thickness gap between the sleeve and the stiffener can effectively ensure the overall mechanical properties of the specimen and improve the cooperative rotation ability of the joint.Compared with cast-in-place specimens,the peak bearing capacity of assembled specimens is increased by 22.7%,19.7%and 13.8%respectively,and the ductility coefficients are all between 3.47 and 3.73.The research results show that this kind of fabricated joint has the characteristics of simple installation,better bearing capacity than cast-in-place joint,and the beam can be disassembled and replaced in the later stage,which can provide some reference for the application of similar fabricated joint in engineering.关键词
结构设计/装配式/螺栓连接/单调加载/力学性能Key words
structural design/prefabricated/bolted connection/unidirectional loading/mechanical properties分类
建筑与水利引用本文复制引用
李泽若,吴东平,余卓昱,李成玉..外包缩口钢套螺栓连接节点力学性能试验研究[J].河北工业科技,2024,41(4):247-254,8.基金项目
国家自然科学基金(51878522) （51878522）
