单项受力状态下矩形钢管相贯节点的承载力研究  

Research on the load-carrying capacity of RHS joints with individual load case

作　　者：赵鹏飞[1] 钱基宏[1] 赵基达[1] 马宏睿[1] 成志辉[1] 傅学怡 顾磊 

机构地区：[1]中国建筑科学研究院,北京100013 [2]中建国家游泳中心设计联合体,北京100029

出　　处：《建筑结构学报》2005年第6期54-63,共10页Journal of Building Structures

基　　金：国家科技攻关计划课题(2004BA904B02);北京市科技计划项目(Z0004028040221)

摘　　要：国家游泳中心采取了特殊的结构型式,使其矩形钢管相贯节点,除双平面的几何特性外,同时承受轴力和不可忽视的双向弯矩。本文的目的是研究不同型式的矩形钢管相贯节点在单项受力状态下———腹杆分别承受轴力、平面内弯矩、平面外弯矩时的承载力计算公式;节点型式主要包括T、TT、K、KT等4种单平面和多平面节点类型。以直角T型节点的单项承载力研究为基础,通过大量的有限元计算,并对计算结果进行回归分析得出节点承载力计算公式。本文还对各类节点的失效形态进行了分析。Due to the special structure type, the directly welded rectangular hollow section （RHS） joints are not only muhiplanar, but also bear the axial loads, in-plane moments and out-of-plane moments from each brace. This paper presents the research on the load-carrying capacity of such joints with individual loads, i.e. the braces having only axial load or inplane moment or out-of-plane moment respectively. And the joint styles include planar and multiplanar ones, i.e. the T type, TT type, K type and KT type. Based on the study of the load-carrying capacity of right angle T joints with individual loads, the paper get the joint capacity formula with other types by regressing a host of the finite element analysis results. The analysis of failure modes of each joint type is presented also.

关 键 词：矩形钢管相贯节点 多平面节点 单项受力状态 有限元分析 

分 类 号：TU392.304[建筑科学—结构工程]