树状柱结构空间三分叉铸钢节点静力性能分析

LOADED ANALYSIS OF SPATIAL CAST-STEEL JOINT WITH THREE BRANCHES IN TREE-LIKE STRUCTURE

某展览厅工程,运用ANSYS有限元分析方法分析树状柱结构空间三分叉铸钢节点在轴力、弯矩分别作用及弯矩和轴力共同作用三种情况下不同分管受力时的最大应力及其分布情况,并分析主分管之间倒角半径变化、分管之间内外壁倒角半径变化对节点受力性能的影响,结果表明在三种受力情况下,不同分管受力时,节点最大应力均远小于铸钢材料的屈服强度,说明该种节点有很大的安全储备。

Combining with the practical project of an exhibition, the spatial cast-steel joint with three branches in the tree-like structure has been studied using ANSYS. The maximum stress distribution of joint is analyzed when the force is applied on different branch on three conditions including axial force, bending moment and the combinative action of the both. The effect of the different chamfering radius between chord and branch, and the different inside and outside chamfering radius between branches on mechanical behavior is analyzed. Study results shows that the maximum Mises stresses of the joint on three load conditions are far less than the yield strength and the joint is safe enough.