摘要
文中以预留灌浆孔连接的预制拼装桥墩抗震性能为研究对象,设计制备了5根连接部位在墩柱内的预留灌浆孔预制拼装桥墩,开展拟静力试验,研究了锚固长度分别为180和252 mm对抗震性能的影响规律.结果表明:252 mm锚固长度预制拼装桥墩抗震性能与现浇桥墩基本一致,滞回曲线饱满,具有很好的延性.根据试验数据提出了考虑钢筋锚固长度的三折线恢复力模型,模型的理论计算值与试验值吻合较好,验证了模型的有效性.
Taking the seismic performance of precast assembled piers connected with reserved grouting holes as the research object,five precast assembled piers with reserved grouting holes in the pier column were designed and prepared,and pseudo-static tests were carried out to study the influence of anchorage length of 180 and 252 mm on seismic performance.The results show that the seismic performance of precast assembled pier with anchorage length of 252 mm is basically the same as that of cast-in-place pier,with full hysteretic curve and good ductility.According to the test data,a three-line restoring force model considering the anchorage length of steel bars is proposed.The theoretical calculation value of the model is in good agreement with the test value,which verifies the effectiveness of the model.
作者
刘沐宇
苏启航
张强
马润平
LIU Muyu;SU Qihang;ZHANG Qiang;MA Runping(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China;Hubei Key Laboratory of Roadway Bridge&.Structure Engineering,Wuhan University of Technology,Wuhan 430070,China;China Railway Bridge Survey and Design Institute Group Co.Ltd.,Wuhan 430050,China)
出处
《武汉理工大学学报（交通科学与工程版）》
2023年第4期682-686,693,共6页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
湖北省重点研发项目(2020BCB065)。
关键词
恢复力模型
预留灌浆孔
预制拼装桥墩
拟静力试验
抗震性能
recovery model
reserve grouting holes
prefabricated assembly pier
static testing
seismic performance
