采用塑性铰迁移法加固的钢筋混凝土震损桥墩抗震性能试验研究  

Study on plastic hinge relocation reinforcing method of earquake-damaged bridge piers

作　　者：李徐 姜波 王浩 李倩 赵妍[6] Li Xu;Jiang Bo;Wang Hao;Li Qian;Zhao Yan(Beijing Jingtou Yintai Shangde Real Estate Co.Ltd,Beijing 102200,China;Tsinghua Unigroup,Beijing 100191,China;China Real Estate Association,Beijing 100048,China;China Construction Research Technology Co.Ltd,Beijing 100013,China;Beijing University of Technology,Beijing 100124,China;(Beijing)Structural Engineering Co.Ltd,Beijing 100013,China)

机构地区：[1]北京京投银泰尚德置业有限公司,北京102200 [2]紫光集团有限公司,北京100191 [3]中国房地产业协会,北京100048 [4]中建研科技股份有限公司,北京100013 [5]北京工业大学,北京100124 [6]建研(北京)结构工程有限公司,北京100013

出　　处：《工程抗震与加固改造》2024年第2期96-104,共9页Earthquake Resistant Engineering and Retrofitting

摘　　要：进行了2个采用塑性铰迁移法加固的震损桥墩拟静力试验,分析比对了加固前后结构的破坏现象和破坏模式、桥墩力-位移滞回曲线、力-位移骨架曲线、荷载退化曲线、刚度退化曲线及位移延性和抗力等参数,研究分析了震损桥墩加固后桥墩承载力、刚度及延性等抗震性能的变化,评价了加固方案适用性。进一步地给出了桥墩损伤区域划分标准及各损伤区域材料属性的合理折减取值,提出了采用塑性铰迁移法加固的震损桥墩的强度及延性的合理计算方法。Two reinforced earthquake-damaged bridge pier specimens are tested to evaluate the feasibility of the plastic hinge relocation reinforcing method and the steel jacket method.The performance of the scheme is evaluated by comparing behavior of the reinforced pier with that of the original one.Their failure processes and failure patterns,force-displacement hysteric curves and envelope curves,load degradation and stffness degradation curves,ductility and resistance capability are compared.The suitability of the scheme is then analyzed.Hence,the damaged region of original pier is defined and the material property values in each area are given.The strength and ductility analysis approach is then proposed to estimate the performance of reinforced piers.

关 键 词：震损桥墩 加固方法 塑性铰 

分 类 号：U442.55[建筑科学—桥梁与隧道工程] U445.72[交通运输工程—道路与铁道工程]