承插式预制实体矩形截面桥墩抗震性能研究  

Study on Seismic Performance of Precast Solid Rectangular Piers with Socket Connection

作　　者：张智然 卢永成 齐新 赵晨 林国才 ZHANG Zhiran;LU Yongcheng;QI Xin;ZHAO Chen;LIN Guocai(Shanghai Municipal Engincering Design Institute(Group)CO.,LTD.,Shanghai 200092,China;Department of Bridge Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092 [2]同济大学桥梁工程系,上海200092

出　　处：《结构工程师》2022年第4期128-133,共6页Structural Engineers

摘　　要：承插式连接具有施工便捷、容错性大的优点,在预制拼装桥墩施工中得到了越来越多的关注。市政桥梁通常采用矩形截面的预制桥墩,通过将其直接置于承台预留的孔洞中并浇筑填缝料后形成整体。设计制作了1个大比例尺1∶2的承插式桥墩试件和1个现浇试件,通过拟静力试验,比较承插式装配桥墩和现浇桥墩在破坏模式、滞回曲线、骨架曲线、耗能水平、残余位移等方面的不同。试验结果表明,通过具体的抗震设计可以使承插深度为1.0D的预制桥墩具有与现浇桥墩等同或接近的抗震性能。Socket connection has the advantages of convenient construction and large fault tolerance,which has been paid more and more attention in the construction of prefabricated piers.Municipal bridges usually use precast piers with rectangular cross-section,which are directly placed in the holes reserved in the pile cap and poured with joint filler to form a whole.In this paper,a large-scale 1∶2 socket connection specimen and a castin-place specimen are designed and manufactured.Through the quasi-static test,the differences of failure mode,hysteretic curve,skeleton curve,energy consumption level and residual displacement between the socket connection assembly pier and cast-in-place pier are compared.The test results show that the precast pier with embedment depth of 1.0D can have the same or similar seismic performance as the cast-in-place pier through the specific seismic design.

关 键 词：承插式连接 预制 抗震性能 拟静力试验 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]