轴力与双向弯矩作用下方钢管焊接球节点的承载力与实用计算方法研究.pdf

26 6 Vol. 26, No. 6 2005 12 Journal of Buildin Structures Dec 2005 : 1000- 6869( 2005) 06- 0038- 07 1 1 1 2 2 董石麟 , 邢 丽, 赵 阳, 顾 磊 , 傅学怡 ( 1. , 310027; 2. , 100029) : [ 1] , , , , : ; ; ; ; :TU392304 : A Loadcarryin capacity and practical calculation method of welded hollow spherical joints with square steel tubes subjected to combined axial forces and biaxial bendin moments 1 1 1 2 2 DONG Shilin , XING Li , ZHAO Yan , GU Lei , FU Xueyi ( 1. Space Structures Research Center, Zhejian University, Han zhou 310027, China; 2. CSCEC National Swimmin Center Desi n Consortium, Beijin 100029, China) Abstract : Welded hollow spherical joints connected with square hollow sections are adopted in the National Swimmin Center Water Cube , which are subjected to combined axial forces and bendin moments. The loadcarryin capacity and practical calculation method of welded spherical joints connected with square steel tubes under axial forces and uniaxial bendin moments have been investi ated in Ref. [ 1] . Further studies are carried out in this paper on the joints subjected to combined axial forces and biaxial bendin moments. For joints subjected to combined axial forces and equal biaxial bendin moments, three approaches includin finite element analysis, experimental study and simplified theoretical solution are employed to investi ate their structural behavior, leadin to the practical calculation method for the loadcarryin capacity. For joints subjected to arbitrary biaxial bendin moments, a simplified method is proposed for the bearin capacity which is based on a linear i