摘要
通过3组12个抗剪连接试件的单调加载和重复加载推出试验,研究角钢连接件、槽钢连接件和T-PBL连接件的极限承载能力、荷载-位移关系、延性、初始刚度、刚度退化及耗能能力等力学性能.试验结果表明:槽钢连接件的极限承载能力和初始刚度都要优于其他两种连接件;重复荷载下的各试件初始刚度与单调荷载情况相差不大;随着加载循环次数的增加,试件刚度不断减小,槽钢连接件刚度退化比较慢,角钢连接件次之,T-PBL连接件刚度退化最快; T-PBL连接件耗能能力最好,角钢连接件耗能能力最差,且同级荷载下,随着循环次数的增加,试件耗能能力逐渐降低.
By the push-out tests with monotonic load and repeated load,the mechanical characteristics of bearing capacity,load-slip curve,ductility,initial stiffness,stiffness degradation and energy dissipation capacity were investigated for 12 specimens in 3 types of angle connectors,channel connectors and T-PBL connectors.The results show that the ultimate bearing capacity and the initial stiffness of channel connectors are better than those of angle connectors and T-PBL connectors.The initial stiffness of all specimens have slight difference between monotonic load and repeated load.With the increasing of load cycle,the stiffness of specimens keeps decreasing,and the stiffness degradation of channel connector is slight with degradation sequence of angle connector and T-PBL connector.T-PBL connector has the best energy dissipation capacity,and angle connector has the worst value.With the increasing of load cycle at the same load level,the energy dissipation capacity of specimens is decreased.
作者
王枭
邓文琴
张建东
刘朵
倪伟楠
WANG Xiao;DENG Wenqin;ZHANG Jiandong;LIU Duo;NI Weinan(School of Civil Engineering&Mechanics,Huazhong University of Science&Technology,Wuhan,Hubei 430074,China;Shanxi Luqiao Construction Group Co.,Ltd.,Taiyuan,Shanxi 250001,China;College of Civil Engineering,Nanjing Tech University,Nanjing,Jiangsu 211816,China;Jiangsu Transportation Institute Group Co.,Ltd.,Nanjing,Jiangsu 211112,China)
出处
《江苏大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2018年第6期708-713,共6页
Journal of Jiangsu University：Natural Science Edition
基金
国家自然科学基金资助项目(51478288)
浙江省交通运输厅科研计划项目(2016023)
江苏省交通运输科技与成果转化项目(2016Y09)
