考虑技术状况和时间效应的现役桥梁结构性能劣化模型研究  

Research on the Performance Degradation Model of Active Bridge Structures Considering Technical Conditions and Time Effects

作　　者：孟丛丛[1] MENG Cong-cong(Jiangxi Vocational and Technical College of Transportation,Nanchang 330013,Jiangxi,China)

机构地区：[1]江西交通职业技术学院,江西南昌330013

出　　处：《西部探矿工程》2025年第3期194-198,共5页West-China Exploration Engineering

基　　金：江西省教育厅科学技术研究项目:基于全寿命周期的桥梁预防性养护综合评价体系研究及工程应用(GJJ2205221);第二届黄炎培职业教育思想研究规划课题:基于黄炎培职业教育理念的高职实践教学数字转型研究与实践(ZJS204YB279)。

摘　　要：现役桥梁在长期服役过程中,由于环境因素、荷载作用及材料老化等原因,其结构性能会逐渐劣化。旨在研究现役桥梁结构性能劣化的模型,重点考虑技术状况和时间效应。通过分析桥梁材料的劣化机理、结构构件的抗力退化规律以及荷载的时变特性,建立了基于时变可靠度的多因素耦合桥梁劣化模型。研究结果表明,该模型能够较好地预测桥梁在不同服役阶段的性能变化,为桥梁的维护和管理提供科学依据。During long-term service,the structural performance of active bridges will gradually deteriorate due to environmental factors,load effects and material aging.This article aims to study the model of structural performance degradation of active bridge structures,focusing on technical conditions and time effects.A multi factor coupled bridge degradation model based on time-varying reliability was established by analyzing the degradation mechanism of bridge materials,the resistance degradation law of structural components,and the time-varying characteristics of loads.The research results indicate that the model can effectively predict the performance changes of bridges in different service stages,and provide scientific basis for the maintenance and management of the bridge.

关 键 词：现役桥梁 性能劣化 技术状况 时间效应 时变可靠度 

分 类 号：U443[建筑科学—桥梁与隧道工程]