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季节性冰冻地区冬季路面温度分布规律

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Keywords: 道路工程,沥青路面,回归分析,温度场,季节性冰冻地区,预估模型

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Abstract:

?为准确掌握冬季沥青路面温度场的分布特点和变化规律,基于自行研发的季节性冰冻地区典型道路模型试验台,以试验台近4年的路面温度跟踪观测数据为基础,开展了季节性冰冻地区冬季沥青路面温度场分布规律的研究。基于观测数据,运用统计分析法,建立了观测点所在区域路面温度场预估模型,并对实测值与预测值进行了对比。结果表明:在冬季,随着深度的增加,路面温度逐渐升高,温差变化逐渐减小,且在距路表30cm深度处存在日恒温点;气温骤变时,较大的温度梯度变化主要发生在沥青面层内;哈尔滨冬季最大冻结深度约为180cm;提出的预估模型具有较好的精确性与实用性。

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