钢管角钢组合塔节点的极限承载力研究  

A Study of Ultimate Bearing Capacity of Combo Steel Tube Tower Joints

作　　者：鞠彦忠[1] 曹强[1] 雷俊方[1] 

机构地区：[1]东北电力大学,吉林吉林132012

出　　处：《华东电力》2011年第2期213-216,共4页East China Electric Power

基　　金：国家自然科学基金项目(50878040);吉林省科技发展计划项目(20060506);吉林省教育厅"十一五"科学技术研究项目(200843)~~

摘　　要：采用ANSYS接触方法建立K型钢管角钢组合节点的有限元模型,验证了有限元模型的合理性;重点研究了角钢螺栓连接的偏心作用和各个节点参数对节点极限承载力的影响规律;并与现行规范节点轴心情况作了对比;通过分析得出角钢连接的作用会显著降低节点的极限承载能力;节点板厚度的增加会使节点的极限承载力成直线上升;钢管径厚比对节点的承载力有一定的影响,以及角钢肢端沿轴线到钢管的净距离的增加会降低节点的极限承载力。An analytical parametric study is conducted to investigate the performance of tube-angle connections.The analytical results are in good agreement with existing experimental results.The effects of eccentric loads and parameter change on the ultimate strength are considered.And the analytical results show that ultimate capacity of eccentric loads are significantly lower than that of the axis loads,and the ultimate load of tube-angle connections increases linearly with the thickness of the gusset plate.Besides,diameter/thickness ratios have an effect on the capacity.In addition,as the distance between the angle end and the steel tube increases,the ultimate strength becomes lower.

关 键 词：钢管角钢组合塔节点 K型节点 节点板 极限承载力 

分 类 号：TM75[电气工程—电力系统及自动化]