套筒连接预制拼装铁路桥墩抗震性能拟静力试验研究  

Seismic performance of precast assembled railway bridge pier with sleeve connection quasistatic test study

作　　者：崔文凯 张飞 马宝芬 孙辉 和辉 潘相辉 刘慧[2] 宋飞 Cui Wen-kai;Zhang Fei;Ma Bao-fen;Sun Hui;He Hui;Pan Xiang-hui;Liu Hui;Song Fei(The Seventh Engineering Corporation of Shanghai Civil Engineering Co.Ltd of CREC,Xi′an 710016,China;School of Architecture and Civil Engineering,Xi′an University of Science and Technology,Xi′an 710054,China)

机构地区：[1]中铁上海工程局集团第七工程有限公司,陕西西安710016 [2]西安科技大学建筑与土木工程学院,陕西西安710054

出　　处：《工程抗震与加固改造》2024年第6期92-102,共11页Earthquake Resistant Engineering and Retrofitting

摘　　要：为研究采用套筒连接的铁路预制拼装桥墩抗震性能,并与整体式现浇墩进行对比,设计两个足尺寸铁路桥墩试件,采用拟静力试验的方法对其抗震力学性能进行了研究,得到了两个试件的破坏形态、滞回曲线、骨架曲线,并在此基础上分析了位移延性性能、耗能性能、强度退化规律及刚度退化规律。结果表明预制墩的整体抗震性能明显优于现浇墩,同时得到的刚度退化规律可为进一步开展弹塑性时程分析提供理论依据。In order to study the seismic performance of railway precast assembled pier with sleeve connection and compare it with integral cast-in-situ pier,two full-size railway pier specimens were designed,and their seismic mechanical properties were studied by quasi-static test.The failure modes,hysteresis curves and skeleton curves of the two specimens were obtained.On this basis,the displacement ductility performance,energy dissipation performance,strength degradation law and stiffness degradation law were analyzed.The results show that the overall seismic performance of precast pier is significantly better than that of cast-in-situ pier,and the obtained stiffness degradation law can provide a theoretical basis for further elastic-plastic time-history analysis.

关 键 词：套筒连接预制拼装墩 拟静力试验 滞回曲线 骨架曲线 延性性能 等效黏滞阻尼系数 强度退化 刚度退化 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]