套筒加强T型管节点在轴向压力作用下的极限强度分析  

Ultimate strength of sleeve reinforced T-joints under axis loading

作　　者：冯琦[1] 谭家华[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200030

出　　处：《哈尔滨工程大学学报》2006年第5期653-656,共4页Journal of Harbin Engineering University

摘　　要：根据半潜式平台立柱与浮体的连接方式,提出了一种新的管节点加强方法.在弦管与撑管连接处用套管进行加强,以改善管节点处应力集中,提高管节点的极限强度.作为整体研究的一部分,文中利用有限元方法,对此种加强方法在管节点承受轴向载荷时的加强效果进行了计算.结果表明用套筒加强可以很大程度上提高T型节点的极限强度,但套筒的几何参数对加强效果有很大的影响.A new method to reinforce T-joints is presented to strengthen the connection between the pontoon and leg of a semi-submersible vehicle. To improve the stress concentration and the ultimate strength of the T-joints, the joints were reinforced by a sleeve where the chord and brace intersects. Using the finite element method to study key parameters under axis loading, it was found that the ultimate strength of sleeve reinforced T-joints can be greatly improved, and the size of sleeve affects that ultimate strength.

关 键 词：极限强度 有限元分析 加强型节点 套筒 

分 类 号：U674.381[交通运输工程—船舶及航道工程]