氯盐环境下基于状态指标与动态指标的服役混凝土桥梁的维修加固策略  

Maintenance and Reinforcement Strategy of Service Concrete Bridge Based on State Index and Dynamic Index in Chloride Environment

作　　者：张灵灵 刘荣桂 姜佩弦 ZHANG Ling-ling;LIU Rong-gui;JIANG Pei-xian(Nantong Institute of Technology,Nantong 226002,China)

机构地区：[1]南通理工学院,江苏南通226002

出　　处：《工程建设与设计》2024年第19期102-104,共3页Construction & Design for Engineering

基　　金：南通市科技计划项目(JCZ20104)。

摘　　要：对于服役混凝土桥梁结构的维修加固策略,论文考虑了结构的演化过程。首先,将裂缝宽度作为结构退化的状态指标;然后,采用Gamma随机过程模拟裂缝演变的动态可靠指标;最后,通过案例分析了某30 m服役大桥的状态指标、动态指标,验证了该维修加固方案策略优化模型的正确性。For the maintenance and reinforcement strategy of concrete bridge structure in service,this paper comprehensively considers the evolution process of the structure,firstly,the crack width is taken as the state index of structural degradation.Then,the Gamma stochastic process is used to simulate the dynamic and reliable indicators of crack evolution,and finally,the state index and dynamic index of a 30 m service bridge are analyzed by example the correctness of the maintenance reinforcement strategy optimization model is verified.

关 键 词：混凝土桥梁 氯盐侵蚀环境 裂缝 预防性维护 必要性加固 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]