李兆凡   石永久   陈  宏   王元清
    （清华大学土木工程系  北京 100084）

[提要]  对4种不同构造形式的钢框架梁柱节点进行了非线性有限元分析，研究了节点局部构造对应力分布、塑性区分布及极限承载力的影响，分析了焊接孔末端的应力分布状况。文中对不同节点的力学性能进行了分析比较，计算结果与试验结果吻合较好。
[关键词]  钢结构  梁柱节点  有限元  非线性分析

This paper focuses on non-linear FEA analysis of four types of web-bolted and flange-welded( WBFW)beam-column connections tested. The stress distribution of the connections under cyclic loading is investigated. Connection strength and stress concentration at the end of the weld access hole are analyzed and compared between the connections. Comparison between FEA results and experimental data shows that nonlinear FEA method is satisfactory in simulating the behavior of WBFW connections under low-cyclic loading. And a new type of connection detail is recommended.
Keywords:  steel structure; beam-column connection; finite element; non-linear analysis