混凝土桥梁服役性能退化及预防性维护综述  

Review of Performance Deterioration and Preventive Maintenance of In-service Concrete Bridges

作　　者：陈华鹏 刘维刚 江钰 肖烽 朱泽文 Chen Huapeng;Liu Weigang;Jiang Yu;Xiao Feng;Zhu Zewen(School of Transportation Engineering,East China Jiaotong University,Nanchang 330013,China;School of Architectural and Engineering,Xinyu University,Xinyu 338004,China;Jiangxi Transportation Research Institute,Nanchang 330052,China)

机构地区：[1]华东交通大学交通运输工程学院,江西南昌330013 [2]新余学院建筑工程学院,江西新余338004 [3]江西省交通科学研究院有限公司,江西南昌330052

出　　处：《华东交通大学学报》2024年第2期1-24,共24页Journal of East China Jiaotong University

基　　金：国家重点研发计划项目(2021YFE0105600);江西省科技合作专项重点项目(20212BDH80022);江西省重点研发计划“揭榜挂帅”项目(20223BBH80002);江西省交通运输厅重点工程科技项目(2022H0014)。

摘　　要：针对混凝土桥梁服役性能退化分析与预防性维护这一热点问题进行了综述。混凝土桥梁作为复杂的结构体系,具有损伤因素多、材料劣化机理复杂以及服役性能评估难等特点,在环境与荷载等因素的共同作用下,钢筋与混凝土材料特性发生劣化,导致混凝土构件承载力退化,最终影响桥梁整体结构力学性能。从材料劣化机理分析、材料与结构力学性能退化模拟、服役性能评估、剩余使用寿命预测以及预防性维护策略制定等方面对既有混凝土桥梁服役性能退化与预防性维护进行了详细阐述,同时对比分析了各研究模型和方法的优势与不足。然后,分别从既有混凝土桥梁材料、构件和结构等层次着手,分析了桥梁材料微观劣化特性,探讨了桥梁构件损伤机理与失效过程,明确了在役混凝土桥梁结构力学性能宏观退化规律。最后,基于对现有研究的分析与总结,指出了当前混凝土桥梁服役性能退化与预防性维护中存在的问题,为后续研究提供了新的思路,为桥梁全寿命智能运维管理提供科学依据。This paper reviews the hot research topic of the performance deterioration and preventive maintenance of in-service concrete bridges.As complicated structural systems,concrete bridges have characteristics of multiple causes of structural damage,complex degradation mechanisms of materials,and difficult assessment of the structural performance.Due to the combined action of the environmental and loading effects,the properties of steel reinforcement and concrete materials deteriorate,which leads to a decrease in the load-carrying capacity of the structural components and ultimately affects the structural performance of the whole concrete bridge.This paper discusses the performance deterioration and preventive maintenance of the in-service concrete bridges in many aspects,such as the material degradation mechanism,the simulations of the mechanical performance dete-rioration of materials and structures,the evaluations of service performance,the predictions of remaining service life,and the determination of preventive maintenance strategies.Meanwhile,the advantages and disadvantages of the proposed models and methods are compared and analyzed.Consequently,from different levels of materials,components and structures of the existing concrete bridges,it analyses the degradation characteristics of bridge materials at the meso-scale level,investigates the damage mechanisms and failure process of the bridge components,and further examines the deterioration laws of the mechanical performance of the in-service concrete bridges at macro-scale level.Finally,based on the analysis and review of the existing investigations,it proposes the current issues in the performance deterioration and preventive maintenance of the in-service concrete bridges,provides new frameworks for future research,and offers the scientific basis for the smart operation and maintenance management throughout the whole life cycle of bridges.

关 键 词：混凝土桥梁 性能退化 性能评估 预防性维护 

分 类 号：U448.33[建筑科学—桥梁与隧道工程]