左右梁高不同外加强环式钢框架节点力学性能  

Mechanical properties of steel frame joints in strengthened external diaphragm type with different left-right beam heights

作　　者：隋伟宁[1] 李晓敏 王占飞 郑子轩 SUI Wei-ning;LI Xiao-min;WANG Zhan-fei;ZHENG Zi-xuan(School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China;School of Transportation Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Original Design Center,Huachengboyuan Engineering Technology Group,Beijing 100052,China)

机构地区：[1]沈阳建筑大学土木工程学院,沈阳110168 [2]沈阳建筑大学交通工程学院,沈阳110168 [3]华诚博远工程技术集团原创中心设计部,北京100052

出　　处：《沈阳工业大学学报》2019年第3期344-349,共6页Journal of Shenyang University of Technology

基　　金：国家自然科学基金资助项目(51108278)

摘　　要：为了研究左右梁高不同的圆形钢管柱-H型钢梁外加强环式框架异形节点的力学性能,利用非线性有限元软件ABAQUS建立了三维空间外加强环式钢框架异形节点有限元模型,并进行弹塑性有限元分析.对比分析了不同几何参数对外加强环式钢框架节点的承载能力及初期刚度的影响.结果表明:随着左右梁高度比的增加,节点域的承载力降低,初期刚度增加;增加柱壁厚度和梁翼缘厚度,导致节点域的承载力增加;随着轴压比的增加,节点域的承载力随之降低;柱壁厚度、梁翼缘板厚度以及轴压比对节点域的初期刚度影响较小.In order to investigate the mechanical properties of circular hollowsteel column-H shaped steel beam connected by irregular joints in a strengthened external diaphragm type with different left-right beam heights,a three-dimensional space finite element model for the irregular steel frame joints in the strengthened external diaphragm type was established with the nonlinear finite element software ABAQUS,and the elastic-plastic finite element analysis was performed.In addition,the influence of different geometrical parameters on the bearing capacity and initial stiffness of steel frame joints in the strengthened external diaphragm type was compared and analyzed.The results showthat with increasing the height ratio of left and right beams,the bearing capacity of panel zone reduces,and the initial stiffness increases.With increasing the thickness of both column wall and beam flange,the bearing capacity of panel zone increases.With increasing the axial compression ratio,the bearing capacity of panel zone decreases.Furthermore,the column wall thickness,beam flange thickness and axial compression ratio have little influence on the initial stiffness of panel zone.

关 键 词：钢框架 外加强环 节点域 半刚性节点 承载能力 刚度 有限元分析 参数分析 

分 类 号：TU317[建筑科学—结构工程]