负偏心对钢管-插板K型节点承载力的影响  

Effects of Eccentricity on the Ultimate Strength of K-joint with Tube-gusset Plate Connections

作　　者：王蔚佳[1] 刘红军[1] 李正良[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045

出　　处：《土木建筑与环境工程》2012年第4期91-98,共8页Journal of Civil,Architectural & Environment Engineering

基　　金：国家自然科学基金资助项目(51078367);中央高校基本科研业务费资助项目(CDJRC10200016)

摘　　要：对主管规格为219mm×6mm有负偏心作用的1/4加肋钢管插板连接的极限承载力进行了试验研究,根据试验结果提出了等效受力模型,在此基础上研究了有负偏心的1/4(1/2)和全环形加强板钢管插板连接的K型节点的主管轴力、主管管壁弯矩和剪力三者之间的相互关系,并利用有限元软件分析了各参数对节点极限承载力的影响,在此基础上提出了此类节点的建议公式并与试验结果进行了比较。结果表明:建议公式表面看是反映两两之间的相互关系,实际上是反映了主管轴力、主管管壁弯矩和剪力三者之间的关系,建议公式能较好的估算节点承载力的上限值。The behavior and strength of tube-gusset connections with tube 219×6 and 1/4 annular ribbed plate subjected to eccentric force is investigated.Non-dimensionalized ultimate strength interaction relations between the wall moment of tube,vertical axial force,and eccentric vertical component force of axial brace force of tube-gusset connections with 1/4（1/2） and annular ribbed plate subjected to eccentric force is researched based on the model of equivalent forces of tubular joint.The parameters which influence the ultimate strength of tube-gusset joint were analyzed and non-dimensionalized ultimate strength interaction-relationships were proposed.It is shown that the proposal formula has theoretical and practical significance for design because of comparation with experimentation.

关 键 词：负偏心 极限承载力 插板连接 等效受力模型 

分 类 号：TU312.1[建筑科学—结构工程]