建筑结构学报2017，Vol.38Issue(10)：21-28,8.DOI:10.14006/j.jzjgxb.2017.10.003
带加劲肋顶底角钢梁柱连接节点试验研究
Experimental investigation on behavior of stiffened top and seat angle beam-to-column connections in steel frame
摘要
Abstract
In order to investigate the moment resistance and seismic behavior of the stiffened bolted top-and-seat angle connection under higher pretension force in high-strength bolt,five specimens for monotonic loading and four specimens for cyclic loading were tested.Tests of the monotonic loading of negative bending moment show that a stiffener weld in tension zone of the angle of the joint can greatly enhance connections and initial rotational stiffness and strength,but crack is found in the weld zone of stiffener.When a stiffener is applied to the compression zone of the angle,it has almost no effect on the initial rotational stiffness,but increases the plastic moment of resistance of the connection.Tests on cyclic behavior and failure mechanisms were investigated on four different configurations of connections.The M-θ curves,skeleton curves,ductility,energy dissipation and rigidity were evaluated.The results show that stiffened top and seat angle connections behave as typical semi-rigid and partial strength connection with good rotation ability and energy dissipation.Crack is found alone the arc platic line.The ultimate rotation is greater than 0.04 rad,which satisfies the ductility requirement of American standard FEMA 350.When the inter-story drift ratio of stiffened specimens reaches 0.08 rad,the joints could bear a moment above 0.5Mmax,indicating the connection has certain robustness.关键词
钢框架/角钢连接/半刚性连接/拟静力试验/滞回性能/延性Key words
steel frame/angle connection/semi-rigid connection/quasi-static test/hysteretic behavior/ductility分类
建筑与水利引用本文复制引用
王鹏,王湛,潘建荣,李松..带加劲肋顶底角钢梁柱连接节点试验研究[J].建筑结构学报,2017,38(10):21-28,8.基金项目
国家自然科学基金项目(51378009,51378219,51638009),亚热带建筑科学国家重点实验室基金项目(2017ZB28). （51378009,51378219,51638009）
