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氯盐环境下钢筋混凝土桥梁耐久性评估

DOI: 10.3969/j.issn.1674-0696.2013.sup.1.09, PP. 764-768

Keywords: 氯盐环境,钢筋混凝土桥梁,耐久性评估,VisualBasic6.0,chlorideenvironment,reinforcedconcretebridge,assessmentofdurability,VisualBasic6.0

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Abstract:

:?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VisualBasic6.0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。

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