建筑结构学报2017，Vol.38Issue(11)：64-73,10.DOI:10.14006/j.jzjgxb.2017.11.008
方钢管混凝土柱-H形钢梁螺栓连接节点受力性能试验研究
Experimental study on mechanical performance of concrete-filled square steel tubular columns to H-section steel beam bolted connection
摘要
Abstract
Taking the effect of composite action of profiled steel sheet-concrete slabs into consideration,experimental research on the static performance of the concrete-filled square steel tubular column to H-section steel beam bolted connection was carried out.Static loading tests were performed on three full scale specimens under the circumstances of no-floor slab,floor slab under pressure,floor slab under tension,to investigate the mechanical properties of the connections under monotonic loading,such as the initial rotational stiffness and ultimate bearing capacity,etc.The effect of composite action of floor slabs on its mechanical performance under the positive and negative bending moments was also studied.The results show that the beam-end displacement ductility coefficient of the no-board joint specimen is beyond 2.2,which satisfies the seismic design requirement.The performance difference between composite joints and no-board joints is obvious.Compared to the pure steel beam,the neutral axis of composite beam cross section moves up,and the initial rotational stiffness and ultimate bearing capacity of composite joints are increased significantly.The time of bolt starting sliding at composite joints is delayed,and the maximum slippage decreases.The shear deformation of joint core area can be ignored.关键词
方钢管混凝土柱/梁柱螺栓连接节点/楼板组合作用/静力试验/受力性能Key words
concrete-filled square steel tubular column/column to beam bolted connection/composite action of floor slab/static test/mechanical performance分类
建筑与水利引用本文复制引用
张爱林,孙勇,刘学春,詹欣欣,李超..方钢管混凝土柱-H形钢梁螺栓连接节点受力性能试验研究[J].建筑结构学报,2017,38(11):64-73,10.基金项目
国家重点研发计划(2016YFC0701503),国家自然科学基金项目(51678010),北京市自然科学基金面上项目(8172009). （2016YFC0701503）
