全国范围沥青混凝土路面路表温度的分布特征研究

Research of Distribution Charaicteristics of Surface Temperature of Asphalt Concrete Pavement in China

计算了基准热力参数条件下98个有太阳辐射量、641个无太阳辐射量共739个地区沥青混凝土路面路表温度的多年(8～10年)分布规律;分析了沥青混凝土路面路表温度的年间差异,回归得到在标准材料热力参数下沥青混凝土路面路表温度年均值μ■s、年标淮差σ■s与气象、地理参数的关系,分析结果表明具有较高的精度;基于739个地区计算结果,绘制了标准材料热力参数下全国沥青混凝土路面路表温度年均值等值图和沥青混凝土路面路表温度年标淮差等值图;分析了材料热力参数对沥青混凝土路面路表温度年均值和年标淮差的影响,给出了在非标准材料热力参数的情况下,沥青混凝土路面路表温度年均值和年标淮差的修正公式。

Distribution of asphalt concrete pavement surface temperature over 8～10 years are calculated based on data of 98 observation stations which have Solar radiation together with 641 observation stad tions which lack solar radiationl. Annual differences of surface temperature are analyzed; regression equations of relations between annual mean surface temperature μT, as well as its annual standard deviation σT, and local meteorological, geographic parameters are obtained, analyses show that has a high degree of accuracy. The isopleth map of μT, and a σT, are presented based on computed result from 739 observation stations on condition of standard material thermal parameters. Material thermal parameter sensitivity are analyzed. Under condition of non-standard of material thermal parameters, the correction formulas of μT, and σT, with respect to material thermal parameters are given.