人民黄河2025，Vol.47Issue(4)：145-151,7.DOI:10.3969/j.issn.1000-1379.2025.04.023
弧形钢闸门支臂弦杆结构优化布置研究
Research on Optimization Layout of Radial Steel Gate Arm Chord Member Structure
摘要
Abstract
Based on the theoretical of eigenvalue buckling analysis method and considering the material utilization efficiency of chord member structures,this study employed numerical simulation method to conduct stability calculations for gate arms without chord member,with single chord member,and with double chord members.The influence of chord member positioning,quantity,and cross-sectional properties on the structural stability of steel gate arms was analyzed.An optimized chord-layout scheme was proposed,and on this basis,finite element analysis was conducted on the overall stability of the steel gate support arm.The results indicate that for single chord member gate arms,the optimal ratio of the distance between the chord and the hinged support to the total arm length(l/m)ranges from 0.60 to 0.75,achieving the highest load-bearing capacity per unit mass.Arranging double chord members away from the hinge end can improve the unit mass bearing capacity of the support arm,but the spacing between chord members should not be too large.Dimensional analysis of the chord member structure reveals that when the width-to-height ratio of the chord is 1.4,the overall stability of the gate arm is favorable.The thickness ratio of the flange to the web(t3/t4)has minimal effect on the load-bearing capacity per unit mass,with the primary design consideration being to ensure local stabil-ity of the gate arm.Adding chord members improves gate stiffness and enhances the stress state,primarily by reducing the maximum equiva-lent stress in the steel gate arm.Compared to gate arms without chord member,single chord member arms reduce the maximum equivalent stress by 8.44%,while double chord member arms achieve a reduction of 12.99%.关键词
弧形钢闸门/支臂弦杆/有限元分析/单位质量承载力/优化布置Key words
radial steel gate/arm chord member/finite element analysis/unit mass carrying capacity/optimized arrangement分类
建筑与水利引用本文复制引用
王晨,刘亚坤,张帝,曹泽..弧形钢闸门支臂弦杆结构优化布置研究[J].人民黄河,2025,47(4):145-151,7.基金项目
国家自然科学基金资助项目(52179060) （52179060）
