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基于统计回归法的沥青路面温度场模型

, PP. 27-31

Keywords: 道路工程,温度场,预估模型,传感器,沥青路面

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Abstract:

在实测31820组路面温度数据和5554组气象数据的基础上,研究路面温度场预估模型,重点解决以往模型在较深处预估精度不足的问题。通过采用分段函数形式、考虑不同深度处路面温度受环境因素影响延后、引入深度衰减因子等手段得到了新的路面温度场模型。提出了不同深度处气温和太阳辐射对路面温度影响的延后时间,二者分别为0~4h和2~4h,层位越深则延后越长;推荐温度沿深度的衰减因子采用H-i(i=1,2,3)。新模型预估温度与实测结果相关系数达到0.92,在较深处(10cm以下)仍然具有较好的精度。

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