既有钢筋混凝土桥梁碳化可靠度评估方法

华南理工大学学报(自然科学版) ›› 2004, Vol. 32 ›› Issue (2): 50-53,66.

既有钢筋混凝土桥梁碳化可靠度评估方法

禹智涛韩大建

华南理工大学建筑学院广东广州510640

收稿日期:2003-01-24 出版日期:2004-02-20 发布日期:2015-09-07
通信作者: 禹智涛（1968－）男广东工业大学建设学院讲师在职博士生主要从事桥梁结构工程的研究． E-mail:yuzhitao2000＠tom.com
作者简介:禹智涛（1968－）男广东工业大学建设学院讲师在职博士生主要从事桥梁结构工程的研究．
基金资助:
广东省自然科学基金资助项目（20010018）；广东工业大学青年基金资助项目（202032）

Method of Carbonization Reliability Assessment for Existing Reinforced Concrete Bridges

Yu Zhi-tao Han Da-jian

1．College of Automation EngineeringNanjing University of Aeronautics＆AstronauticsNanjing210016JiangsuChina；
2．College of Civil AviationNanjing University of Aeronautics＆AstronauticsNanjing210016JiangsuChina

Received:2003-01-24 Online:2004-02-20 Published:2015-09-07
Contact: 禹智涛（1968－）男广东工业大学建设学院讲师在职博士生主要从事桥梁结构工程的研究． E-mail:yuzhitao2000＠tom.com
About author:禹智涛（1968－）男广东工业大学建设学院讲师在职博士生主要从事桥梁结构工程的研究．

摘要/Abstract

摘要： 讨论了钢筋混凝土结构的混凝土碳化机理及碳化深度模型给出了适合于既有钢筋混凝土桥梁可靠度分析的混凝土碳化深度表达式．以混凝土碳化至钢筋表面作为结构的耐久性失效极限状态建立了以现时刻为分析时间起点的混凝土碳化可靠度分析及剩余碳化寿命预测模型并研究了其实用近似计算方法．以一座实际钢筋混凝土桥梁为例对其碳化可靠度及剩余碳化寿命进行评估为该桥的维修加固决策提供参考依据.

关键词: 既有钢筋混凝土桥梁, 混凝土碳化, 可靠度评估, 剩余寿命预测

Abstract: The mechanism of concrete carbonization and the model of carbonization depth of reinforced concrete structures were discussedand a formula of concrete carbonization depth suitable for reliability analysis of existing reinforced concrete bridges was given．Thentaking the state while concrete carbonization develops to the surface of the reinforcement as the durability limit stateand taking the present time as the analysis starting pointmodels of reliability analysis and residual lifetime prediction of
concrete carbonization are establishedand their practical approximate calculation methods are presented．Finallytaking a actual reinforced concrete bridge for examplethe reliability of carbonization and residual carbonization lifetime of the bridge were estimated．Reference basis for maintenance decision of the bridge was provided．

Key words: existing reinforced concrete bridge, concrete carbonization, reliability assessment, residual lifetime prediction

中图分类号:

禹智涛韩大建. 既有钢筋混凝土桥梁碳化可靠度评估方法[J]. 华南理工大学学报(自然科学版), 2004, 32(2): 50-53,66.

Yu Zhi-tao Han Da-jian. Method of Carbonization Reliability Assessment for Existing Reinforced Concrete Bridges[J]. Journal of South China University of Technology(Natural Science Edition), 2004, 32(2): 50-53,66.