环口板加固Y型方钢管节点在轴压作用下极限承载力的有限元分析  

Finite element analysis of the Static Strength of Square Tubular Y-joints Reinforced with Collar Plate under Axial Compression

作　　者：王学高[1] 邵永波[1] 

机构地区：[1]烟台大学土木工程学院,山东烟台264005

出　　处：《土木工程与管理学报》2011年第3期201-205,共5页Journal of Civil Engineering and Management

基　　金：国家自然科学基金(50808153)

摘　　要：对支管宽度与主管宽度比β,主管宽度与主管壁厚的比2γ,环口板厚度与主管管壁厚之比τc和环口板宽度与支管宽度之比lw/d1等参数对环口板加固Y型管节点在轴压作用下的极限承载力进行了有限元分析。分析结果表明环口板加固Y型方钢管节点的极限承载力相对于未加固节点得到了很大的改善。为了提高节点的承载能力,建议环口板的厚度不宜超过主管厚度的2.5倍,环口板的宽度不宜超过支管宽度的3倍。To study the static strength of square tubular Y-joints reinforced with collar plate under axial compression,the finite element analysis is conducted.The par ameters include： the brace-to-chord width ratio β,the chord width-to-c hord wall thickness ratio 2γ,collar-plate to chord wall thickness ratio τc,and collar-plate width to brace width ratio lw/d1.It is found that the ultimate bearing capacity of collar plate reinforced Y-joints c omparing with that of the corresponding unreinforced Y-joints has a significant improvement.It can be suggested that the thickness of collar plate should not exceed 2.5 times of the chord thickness,and the width of collar plate also shou ld not exceed 3 times of the brace width for improving the bearing capacity effi ciently.

关 键 词：环口板 Y型方钢管节点 轴压作用 极限承载力 有限元分析 

分 类 号：TU398[建筑科学—结构工程]