双铰连接形式钢框架节点的设计分析  

Design analysis of double-hinge joints in steel frame structure

作　　者：李华威 LI Huawei

机构地区：[1]福建省建科工程技术有限公司,福建福州350108

出　　处：《福建建设科技》2025年第2期24-27,共4页Fujian Construction Science & Technology

基　　金：福建省科技厅自然科学基金项目(2024J01886)。

摘　　要：本文聚焦于双铰连接形式的钢框架节点设计。深入探讨了T型盖板长细比这一关键参数对双铰接节点抗震性能的影响,提出一种双铰接连接形式的抗震钢框架节点,优化传统钢框架节点的工作机制。通过理论分析提出双铰接节点的设计过程,并通过有限元分析验证了设计方法的合理性。结果表明,与单铰接节点相比,新型双铰接钢框架节点更有利于能量耗散,T形盖板引起新型节点塑性铰外移,使承载能力和能量耗散能力都集中在盖板上。This paper focuses on the design of steel frame beam-column nodes with double-hinged connection form.The influence of the key parameter of the slenderness ratio of the T-shaped cover plate on the seismic performance of the double-hinged node is investigated in detail,and an seismic steel frame node with double-hinged form is proposed to optimize the working mechanism of the traditional steel frame node.The design process of the double-hinged node is proposed through theoretical analysis,and the rational of the design method is verified through finite element analysis.The results show that compared with the single-hinged node,the new double-hinged steel frame node is more to energy dissipation,and the T-shaped cover plate causes the plastic hinge of the new node to move outward,so that the bearing capacity and energy dissipation capacity concentrated on the cover plate.

关 键 词：钢框架结构 T型盖板 双铰接节点 削弱区 抗震性能 

分 类 号：TU391[建筑科学—结构工程]