高强螺栓连接铝合金框架梁柱节点抗震性能试验研究及数值分析  

Experimental study and numerical analysis on seismic behavior of high-strength bolted aluminum alloy frame beam column joints

作　　者：张铮 陈培旭 张其林[2] ZHANG Zheng;CHEN Peixu;ZHANG Qilin(School of Civil Engineering,Fujian University of Technology,Fuzhou 350118,China;College of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]福建工程学院土木工程学院,福州350118 [2]同济大学土木工程学院,上海200092

出　　处：《建筑结构》2023年第21期58-66,共9页Building Structure

基　　金：国家自然科学基金重点项目(51738009);建设部国家标准《铝合金结构技术标准》编制项目(建标[2016]248号);福建工程学院科研发展基金(GY-Z17159)。

摘　　要：为研究高强螺栓连接铝合金框架梁柱节点的抗震性能,设计了采用铝合金和不锈钢两种材料角型连接件的节点循环加载试验。结果表明,全铝合金角型件节点的延性发展严重不足,延性系数最大仅为2.25,破坏征兆不明显,在抗震结构中偏不安全。顶底不锈钢角型件节点最大塑性转角均在0.04rad以上,满足美国规范FEMA350不小于0.03rad的延性设计要求,表现出良好的塑性变形及耗能能力。对于顶底不锈钢角型件节点,梁腹板采用铝合金或不锈钢角型件对滞回全过程及各项性能指标无显著影响。采用有限元分析软件ABAQUS对节点抗震性能试验进行有限元模拟,有限元分析和试验结果吻合良好,可以很好地模拟节点的受力全程。In order to study the seismic behavior of high-strength bolted aluminum alloy frame beam column joints,the cyclic loading tests of joints with aluminum alloy and stainless steel angle connectors were designed.The results show that the ductility development of all aluminum alloy angle joint is seriously insufficient,the maximum ductility coefficient is only 2.25,the failure symptom is not obvious,and it is unsafe in the seismic structure.The maximum plastic corners of the top and bottom stainless steel corner joints are all above 0.04rad,which meets the ductility design requirements of the American standard FEMA350 not less than 0.03rad,showing good plastic deformation and energy dissipation capabilities.For the top and bottom stainless steel angle joints,the use of aluminum alloy or stainless steel angle members in the beam web has no significant effect on the whole hysteretic process and performance indexes.The finite element analysis software ABAQUS was used to simulate the seismic performance test of the joint.The results of the finite element analysis and the test are in good agreement,which can well simulate the whole stress process of the joint.

关 键 词：高强螺栓连接 铝合金梁柱节点 抗震性能 角型连接件 试验研究 数值分析 

分 类 号：TU395[建筑科学—结构工程]