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.
出处
《土木建筑与环境工程》
CSCD
北大核心
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)
关键词
负偏心
极限承载力
插板连接
等效受力模型
eccentricity
ultimate strength
tube-gusset connections
the model of equivalent force
