空间插值算法在沥青路面气候分区中的应用研究——以温度参数为例

Application of Spatial Interpolation in Asphalt Pavement Climate Zoning:A Case of Temperature Parameter

温度是沥青路面气候分区的重要指标之一,其插值结果的精度对沥青路面气候分区影响极大。论文分别基于3种一般插值法及3种基于数字高程模型(DEM)的趋势面模拟+残差内插法对辽宁省14 a累年最热、冷月平均温度进行插值研究,对插值结果的空间分布、精度及其对沥青路面气候分区影响进行了详细的分析比较。研究结果表明:3种基于DEM的趋势面模拟+残值内插法均能反映温度随海拔高度等地形特征的变化趋势,而一般插值法则不能,且前者的精度约高于后者1倍,其中基于DEM的趋势面模拟+残值内插法中反距离插值法的精度最高,一般插值法中薄板样条法的精度最低;插值算法的精度越高,通过插值得到的温度数据与实际温度分布数据越接近,分区结果越准确。

Temperature is one of the important indicators of the asphalt pavement climatic zon-ing , its accuracy of the interpolation results has great influence on the aspBased on three general interpolation methods and three trend surface simulation and residual interpolationmethods based on digital elevation model （DEM） respectively , interpolated annualin the hottest and coldest month of 14 years in Liaoning province. The distribution , precision and its impact on the climate zoning of asphalt pavempared in detail. The results showed that three trend surface simulation and residual interpolation meth-os based on DEM could reflect temperature change trend with elevation and topogrthree general interpolation methods couldnt be , and the accuracy of the former was about higher than thelatter 1 times. At the same time , the accuracy of trend surface simulation and residual interpolation meth-ods based on DEM in inverse distance weight was highest , the accuracy of general interpospline was lowest. Last but not the least , the higher the accuracy of the interpolation , the more close tothe temperature data obtained by interpolation and the actual temperature data , the more accurate thezoning results.