摘要
在外加强环不等高H型钢梁-方钢管柱节点抗震性能试验研究的基础上,采用有限元分析软件ABAQUS,建立了考虑不同参数影响的三维实体模型并进行了非线性有限元分析。三维实体模型分析得到的有限元结果与试验结果吻合良好,有限元模型能够较高精度地模拟节点的受力行为。研究表明：节点的破坏形式分为整体节点域剪切破坏和局部节点域剪切破坏两种;节点单侧框架柱端部弯矩增大系数是节点域形成不同破坏模式的重要控制参数,两种破坏模式的分界线是节点单侧框架柱端部弯矩增大系数约为0. 92;方钢管柱的宽厚比是影响节点域屈服剪力和塑性剪力的主要因素,梁截面高度比对节点域受剪承载力影响较大,而节点域高宽比对节点域屈服剪力和塑性剪力影响并不明显。
Based on the experimental results of unequal-depth H-shaped steel beams to square steel tubular column joints with an external diaphragm, nonlinear finite element （FE） analysis were carried out using the software ABAQUS. Three-dimensional solid models were generated, which took different parameters into consideration. The numerical results obtained by the three-dimensional solid models match well with the experimental results, suggesting that the FE models can simulate the behavior of beam to column joints under cyclic loading with high accuracy. It is found that there are two failure modes of the joints, including the shear failure of the entire panel zone and the shear failure of part of the panel zone. The one-side moment augment factor of column plays a key role to control the failure modes of specimens. The threshold value of this ratio is about 0. 92 for the two failure modes mentioned above. The depth ratio of beams and the width-to-thickness ratio of steel column are the two main parameters that have great impacts on the yield and plastic shear strengths of the entire panels. On the contrary, the aspect ratio of the connection panel has little effect on its yield and plastic shear strengths.
作者
牟犇
李茜
王燕
白涌滔
宁宁
MOU Ben1,2, LI Xi1, WANG Yan1,2, BAI Yongtao3, NING Ning1(1. School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China; 2. Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao University of Technology, Qingdao 266033, China; 3 School of Civil Engineering, Chongqing University, Chongqing 400044, China)
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2018年第10期103-111,共9页
Journal of Building Structures
基金
山东省中青年奖励基金项目(ZR2016EEB38)
中国博士后面上基金项目(2017M612226)
国家自然科学基金项目(51508289)
关键词
不等高H型钢梁-方钢管柱节点
单侧框架柱端部弯矩增大系数
高宽比
非线性有限元分析
受力性能
unequal-depth H-shaped steel beams to square steel tubular column joint
one-side moment augment factor of column
aspect ratio
nonlinear finite element analysis
mechanical behavior
作者简介
牟犇（1985-），男，山东青岛人，工学博士，讲师。E—mail：mouben@qut．edu．cn;通信作者：白涌滔（1986-），男，陕西西安人，工学博士，副教授。E—mail：baiyongtao@gmail．com
