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考虑冻融损伤效应的水泥混凝土路面设计方法

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Keywords: 道路工程,水泥混凝土路面,疲劳损耗等效原理,冻融损伤,使用寿命

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Abstract:

?为了在水泥混凝土路面设计方法中合理考虑冻融损伤对路面使用寿命的影响,基于疲劳损耗等效原理,提出通过引入冻融损伤系数kd来考虑冻融损伤对路面使用寿命影响的方法,分析了抗冻等级、年平均交通增长率、区划参数以及最大温度梯度标准值、材料参数和面层厚度等因素对kd的影响。结果表明:除抗冻等级外,其他因素对kd的影响不大|当冻融介质为水溶液时,kd值在0.8左右变动|当冻融介质为盐溶液时,kd值在0.7左右变动。研究成果为在水泥混凝土路面设计中考虑冻融损伤效应提供了一种方法。

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