基于动应变监测的板梁桥铰缝状态安全评估  

Safety Assessment of Hinge Joints State of Plate Girder Bridge Based on Dynamic Strain Monitoring

作　　者：周良 闫兴非 赵一鸣 淡丹辉[3] 张凯龙 张涛 

机构地区：[1]上海市城市建设设计研究总院(集团)有限公司,上海200125 [2]上海工业化装配化市政工程技术研究中心,上海200125 [3]同济大学,上海200092

出　　处：《中国市政工程》2018年第5期12-14,共3页China Municipal Engineering

基　　金：国家重点研发计划(2017YFF0205600);住房和城乡建设部研究开发项目(K92018111);上海市科委科研项目(17DZ1204303;17DZ1204100)

摘　　要：装配式梁桥是快速工业化造桥技术中最常用、发展最成熟的结构类型之一。其铰缝是这种结构整体协同工作性能的关键,也是服役期内最易发生病害的薄弱部位。为此,提出一种基于动应变相关系数指标的装配式梁桥横向协同工作能力的监测与评估方法。该方法具有无需中断交通、易于实施、意义明确、与短期交通活载无关等优点;在理论上可用于铰缝技术状态和整桥横向协同工作性能的监测和评估。通过数值仿真分析和实桥监测数据分析,证明该方法的有效性和准确性,可用于此类桥梁的安全和健康监测系统。Assembled beam bridges are one of the most commonly used and most developed structural types in rapid industrial bridge construction. Its hinge joint is the key to the overall cooperative performance of this structure, and it is also the weakest part of the disease that is most prone to disease during the service period. To this end, a method for monitoring and evaluating the lateral cooperative ability of assembled beam bridges based on dynamic strain correlation coefficient is proposed. The method has the advantages of no need to interrupt traffic, easy to implement, clear meaning, and has nothing to do with short-term traffic live load; in theory, it can be used for monitoring and evaluation of the state of the hinge joint technology and the horizontal joint work performance of the whole bridge. Through numerical simulation analysis and real bridge monitoring data analysis, the effectiveness and accuracy of the method are proved, which can be used in the safety and health monitoring system of such bridges.

关 键 词：装配式梁桥 动应变 相关系数 横向协同工作性能 监测与评估 

分 类 号：U448.212[建筑科学—桥梁与隧道工程]