铝合金框架T型件连接梁柱节点抗震性能研究  

Study on seismic behavior of beam⁃column joints with T⁃shaped connections in aluminum alloy frames

作　　者：张铮 冯若若 邵珂珂 张其林[2] Zhang Zheng;Feng Ruoruo;Shao Keke;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,福建福州350118 [2]同济大学土木工程学院,上海200092

出　　处：《建筑科学》2023年第7期90-100,共11页Building Science

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：为研究铝合金框架T型件连接梁柱节点的抗震性能,对顶底T型件连接节点、柱间加肋顶底T型件连接节点和角型件连接对比节点进行循环往复加载试验,分析两类节点滞回性能、骨架曲线、延性、刚度退化和耗能能力等,通过有限元分析探讨轴压比、节点域厚度和连接件厚度等参数对节点抗震性能影响。研究结果表明,四组节点延性性能良好,其延性系数均在3.0以上,满足美国规范FEMA350延性设计要求。与角型件连接节点相比,T型件连接节点滞回曲线饱满,能量耗散系数高。柱间设置加劲肋可提高节点的安全储备。随着连接件厚度和节点域厚度的增加,节点极限承载力和刚度均有不同程度的提高,轴压比对节点承载力和刚度的影响较小。To study the seismic performance of T⁃shaped beam⁃column joints in aluminum alloy frame,tests are carried out on top and bottom T⁃shaped joint,T⁃shaped joint of ribbed between columns and angle connection comparison joint under cyclic loading,and the hysteretic performance,skeleton curve,ductility,stiffness degradation and energy dissipation capacity of the two types of joints are analyzed.The effects of axial compression ratio,joint domain thickness and connector thickness on the seismic performance of joints are discussed through finite element analysis.The results show that the ductility performance of the four groups of joints is good,and the ductility coefficients are more than 3.0,which meets the ductility design requirements of American code.Compared with the angle joint,the hysteretic curve of T⁃shaped joint is full,and the energy dissipation coefficient is high.Setting stiffeners between columns can improve the safety reserve of the joint.With the increase of connector thickness and panel zone thickness,the ultimate bearing capacity and stiffness of the joint are improved to varying degrees,and the axial compression ratio has little effect on the bearing capacity and stiffness of the joint.

关 键 词：铝合金梁柱节点 T型连接件 抗震性能 试验研究 数值分析 

分 类 号：TU395[建筑科学—结构工程]