(龙安泛华建筑工程顾问有限公司 北京100053)
【提要】 某体育馆是由网架结构和落地提篮形桁架组成的杂交结构，圆管相交采用T形相贯刚接节点。介绍了工程结构的设计、分析过程。利用半经验半理论公式，介绍了圆管结构T形相贯刚接节点的计算方法和节点柔性对整个结构体系分析的影响。分析结果表明，在一定几何条件下，T形相贯节点可以看作刚接节点，但应考虑
一定的节点柔性对整体结构变形的影响。
【关键词】 圆管结构 T形相贯 刚性节点 节点柔性
Design and Application of Ttype Rigid Connection Joint in Circular Hollow Structure/Lu Qinggang,Geng Xiaobing,Chen Zhenyang(Longonfanhua Architecture Engineering Consultants Co.,Ltd.,Beijing 100053,China)
Abstract:A gymnasium consists of space truss structure and shopping basket shaped truss structure,and the Ttype rigid connection joint is adopted when the circular tube is intersected.The structural design and analysis are introduced.Based on the semiexperience and semitheory formula,the calculation methods of the Ttype rigid connection joints in circular tube structure and the effects of joint flexibility on the structure system are presented.The results show that the Ttype connection joint can be regarded as rigi
d under some circumstances but the effects of certain joint flexibility on the structure system should be taken into account.
Keywords:circular tube structure; Ttype intersect; rigid joints; joint flexibility