大跨空间结构X型方钢管相贯节点应力集中分析  

Stress Concentration Analysis of the X-Type Steel Pipe’s Joints

作　　者：张颖[1] 雷宏刚[1] 闫亚杰[1] 邱斌[1] 

机构地区：[1]太原理工大学,建筑与土木工程学院,山西太原

出　　处：《土木工程》2018年第2期149-158,共10页Hans Journal of Civil Engineering

基　　金：国家自然科学基金资助项目(51578357)。

摘　　要：目前X型方钢管在我国应用十分广泛,具有广阔的发展前景。本文借助ABAQUS对X型方钢管相贯节点的应力集中进行分析。我们定量探讨了5个几何参数对X型方钢管节点应力集中系数的影响,结果表明随着主管宽度B和支管厚度t、支管宽度b、主管与支管间夹角θ的增大,应力集中系数也随之增大;随着主管厚度T的增大,应力集中系数反而随之减小,同时得出了应力集中系数的计算公式,该公式对以后类似节点设计中几何参数的选取具有一定的参考价值,尤其是对建立热点应力幅疲劳方法。At present, the X-type steel pipe is widely used in China and has broad development prospect. In this paper, ABAQUS is used to analyze the stress concentration of X-type steel pipe. We quantita-tively discussed how five geometric parameters influence the stress concentration factor X-type steel tube node, and the results showed that as the head pipe’s width B and branch pipe’s thickness t, branch pipe’s width b, and the intersection angle θ of head pipe and branch pipe increase, the stress concentration factor also increases;and as the head pipe’s thickness T increases, the stress concentration factor decreases, and the calculating formula of the stress concentration factor is obtained at the same time. The formula has a certain reference value to the future similar selection of geometric parameters in the design of the node, especially to the establishment of the hot fatigue stress amplitude method.

关 键 词：X型相贯节点 有限元分析 应力集中系数 

分 类 号：TU3[建筑科学—结构工程]