结构工程师2026，Vol.42Issue(1)：17-24,8.DOI:10.15935/j.cnki.jggcs.202601.0003
新型半刚性梁-柱节点钢框架结构承载性能数值模拟研究
Numerical Simulation Study on Load-Bearing Performance of Steel Frame Structures with New Semi-Rigid Beam-Column Joints
方瑜 1黄忠华 1吴祖咸 1段雄 2罗金辉 2郭小农2
作者信息
- 1. 浙江华云电力工程设计咨询有限公司,杭州 310000
- 2. 同济大学土木工程学院,上海 200092
- 折叠
摘要
Abstract
Traditional H-shaped steel beam-column end-plate connections were redesigned to enable frame columns to connect to frame beams using identical end-plate joints along both principal axes.These modified joints were subsequently applied in single-layer frames-both braced and unbraced-to connect frame columns along the strong axis to the beams.Seven frame configurations were designed considering variables such as the presence of cross-bracing,brace connection plates,stiffener types,and beam-column joint details.Finite element models of these frames were developed and subjected to monotonic loading to investigate their mechanical performance.The results show that frames with the improved end-plate joints exhibit comparable initial stiffness,yield load,ultimate bearing capacity,and displacement ductility coefficient to those with conventional end-plate joints.However,shear deformation within the joint core area is significantly reduced.The inclusion of bracing markedly enhances frame stiffness and load-bearing capacity,though it alters the failure mode from end-plate bending to net-section tension failure of the braces.Compared with the unbraced frame,the braced frame demonstrates a 144％increase in initial stiffness,a 123％increase in yield load,and a 128％increase in ultimate bearing capacity.关键词
端板节点/钢框架/刚度/极限承载力/延性Key words
end-plate joint/steel frame/stiffness equation/ultimate bearing capacity/ductility分类
建筑与水利引用本文复制引用
方瑜,黄忠华,吴祖咸,段雄,罗金辉,郭小农..新型半刚性梁-柱节点钢框架结构承载性能数值模拟研究[J].结构工程师,2026,42(1):17-24,8.
