钢管输电塔环型加肋节点极限承载力研究  

STUDY OF ULTIMATE STRENGTH OF STEEL TUBULAR JOINT WITH ANNULAR RIBBED PLATE OF TRANSMISSION TOWERS

作　　者：刘红军[1] 李正良[1] 李茂华[1,2] 

机构地区：[1]重庆大学土木工程学院,重庆400044 [2]中国电力科学研究院,北京100055

出　　处：《工程力学》2010年第10期65-73,共9页Engineering Mechanics

基　　金：国家自然科学基金项目(50678181);国家电网公司科技项目(SGKJ2007413);重庆大学研究生创新团队(200909C1017)

摘　　要：该文通过试验对钢管环型加肋节点的极限承载力进行了研究,同时借助有限元对此类节点进行了参数分析。根据试验和有限元所得到结果并结合虚功原理,提出了适用于估算此类节点极限承载力的极限分析模型和用于工程设计的建议计算公式,并与试验和有限元所得到的结果进行了比较。结果表明:分析模型具有较好的适用性;建议公式合理有效。The ultimate strength of a steel tubular joint with an annular ribbed plate is researched by experimentation and a analytical parametric study was conducted to investigate the joint of tube-gusset plate connections by the finite element method. Based on the result of the experimentation and finite element method as well as virtual work principle, a limit analysis model for determining the ultimate loads of an annular ribbed joint is established and the proposal formula is put forward, which is applied to the engineering design and the ultimate strength was compared with that obtained by the experimentation, finite element method and analysis model. The result shows that the analysis model and proposal formula have practical significance.

关 键 词：环型加肋 钢管节点 有限元 极限承载力 虚功原理 建议公式 

分 类 号：TU392.3[建筑科学—结构工程]