结构工程师2025，Vol.41Issue(3)：16-23,8.DOI:10.15935/j.cnki.jggcs.202503.0003
波纹板加强K型方钢管节点抗倒塌性能有限元分析
Finite Element Analysis of Collapse Resistance of K-Shaped Square Steel Tube Joints Strengthened by the Corrugated Plates
摘要
Abstract
To improve the collapse resistance of steel truss coal conveying trestle,a novel type of joint is formed to strengthen K-shaped square steel tube joints by welding corrugated plates at the joints between the chord and brace members.On the basis of verifying the correctness of the finite element model,the numerical calculation model of 112 new K-shaped square steel tube joints reinforced by corrugated plate was established,the failure mode of the joints under different parameters was studied,and the law of influence of each parameter on the anti-collapse performance of the joints was revealed.The results show that the failure modes of the new corrugated plate reinforced joint can be divided into shear failure of the chord and buckling of the compression support under unbroken roots and shear failure of the chord and buckling of the compression support under broken roots.Chord width ratio and corrugated plate thickness are positively correlated with joint stiffness,ultimate bearing capacity and failure load.When the diameter to thickness ratio of the chord is less than 0.75,the ultimate bearing capacity of the joint can be significantly improved by increasing the thickness of the support.The curvature of corrugated plate has little influence on the joint stiffness and ultimate bearing capacity,but has great influence on the failure mode of the joint.The ultimate load,failure load and ductility of K-type joints are significantly improved by corrugated plate,which can effectively improve the anti-collapse performance of K-type joints.关键词
K型方钢管节点/波纹板/抗倒塌性能/极限荷载Key words
K-shaped square steel tube joint/corrugated plate/collapse-resistant behavior/ultimate load analysis分类
建筑与水利引用本文复制引用
王佳力,杨国庆,苏瑞,田黎敏..波纹板加强K型方钢管节点抗倒塌性能有限元分析[J].结构工程师,2025,41(3):16-23,8.基金项目
国家自然科学基金(52178161) （52178161）
