建筑结构学报2026，Vol.47Issue(2)：83-94,12.DOI:10.14006/j.jzjgxb.2025.0161
T形方颈单边螺栓连接钢梁-方钢管柱加强节点拟静力试验研究
Experimental study on T-head square-neck one-side bolted beam to SHS column joints with strengthening measures under quasi-static load
摘要
Abstract
Compared with conventional double-side bolts,the T-head square-neck one-side bolts(TSOBs)bolted connection between steel beam and SHS column demonstrates significantly improved ductility and energy dissipation capacity.However,such connections often experience bolt pulling-out damage caused by deformation of the column wall.Therefore,a strengthening measure using built-in H-steel component was proposed for the TSOBs bolted beam to SHS column joints.Seismic performance tests under quasi-static load were conducted on four strengthened specimens.The results show that the H-steel component in the SHS column can prevent column wall deformation and bolt pulling-out failure under cyclic load,while significantly improving the stiffness and bearing capacity of the joints.However,the deformation capacity,strength reserve,and ductility of the joints are reduced.Lengthening and thickening the H-steel component lead to a greater enhancement in joint stiffness and bearing capacity,but at the greater expense of deformation capacity and ductility.The installation of H-steel component inside the SHS column does not affect the strength degradation performance or the equivalent viscous damping coefficient of the joints.Moreover,it mitigates stiffness degradation and improves energy dissipation capacity,with a maximum increase in energy dissipation reaching 102.3％.关键词
梁柱节点/T形方颈单边螺栓/方钢管柱/H形钢组件/拟静力试验/滞回性能Key words
beam-column joint/T-head square-neck one-side bolt/square hollow steel column/H-steel component/quasi-static test/hysteretic performance分类
建筑与水利引用本文复制引用
孙乐乐,王思琦,王培军..T形方颈单边螺栓连接钢梁-方钢管柱加强节点拟静力试验研究[J].建筑结构学报,2026,47(2):83-94,12.基金项目
国家自然科学基金项目(52408166),山东省青年科技人才托举工程项目(SDAST2024QTA024),山东省自然科学基金项目(ZR2024QE243). （52408166）
