Durability Assessment of Ｒeinforced Concrete Bridge in Chloride Environment

doi:10.3969/j.issn.1674-0696.2013.sup.1.09

Journal of Chongqing Jiaotong University(Natural Science) ›› 2013, Vol. 32 ›› Issue (增1): 764-768.DOI: 10.3969/j.issn.1674-0696.2013.sup.1.09

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Durability Assessment of Ｒeinforced Concrete Bridge in Chloride Environment

Liu Xiang，Liu Zhiwen

Department of Bridge Engineering，School of Civil Engineering，Hunan University，Changsha 410082，Hunan，China)

Received:2013-03-01 Revised:2013-03-18 Online:2013-06-30 Published:2015-03-12

氯盐环境下钢筋混凝土桥梁耐久性评估

刘祥，刘志文

湖南大学土木工程学院桥梁工程系，湖南长沙410082)

作者简介:刘祥(1987—)，男，湖南益阳人，工程师，硕士，主要从事桥梁耐久性方面的研究。E-mail:492833124@qq.com.

Abstract

Abstract: The durability assessment of reinforced concrete bridges in chloride environment was focused． Based on the model of durability assessment of reinforced concrete structures，the program for assessment of the durability of reinforced concrete bridges was developed with Visual Basic 6． 0． The durability of a reinforced concrete bridge in chloride environment was assessed with the proposed program． The research results indicate that，the assessment results of reinforced concrete bridges with code for durability design on concrete structure of railway are considered to be conservative，compared with DuraCrete LＲFD method; in the factors which influence the durability of reinforced concrete structures，the chloride environment is worse than carbonation environment; the durability of concrete structures can be improved greatly by increasing the cover thickness of concrete．

Key words: chloride environment, reinforced concrete bridge, assessment of durability, Visual Basic 6． 0

摘要： 针对氯盐环境下钢筋混凝土桥梁耐久性评估问题，基于钢筋混凝土结构耐久性评估模型，采用VisualBasic 6．0编写了钢筋混凝土桥梁耐久性评估程序，并对一座处于氯盐环境作用下的钢筋混凝土桥梁的耐久性进行了分析评估。研究表明:与DuraCreteLＲFD方法相比，采用铁路规范对桥梁结构进行耐久性评估偏于保守;在影响钢筋混凝土桥梁耐久性的因素中，氯盐环境比碳化环境更为显著;增加混凝土保护层厚度可以显著提高结构耐久性能。

关键词: 氯盐环境, 钢筋混凝土桥梁, 耐久性评估, VisualBasic6．0

CLC Number:

U445.7

Liu Xiang，Liu Zhiwen. Durability Assessment of Ｒeinforced Concrete Bridge in Chloride Environment[J]. Journal of Chongqing Jiaotong University(Natural Science), 2013, 32(增1): 764-768.

刘祥，刘志文. 氯盐环境下钢筋混凝土桥梁耐久性评估[J]. 重庆交通大学学报（自然科学版）, 2013, 32(增1): 764-768.

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Durability Assessment of Ｒeinforced Concrete Bridge in Chloride Environment

氯盐环境下钢筋混凝土桥梁耐久性评估

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