中国沥青路面气候影响分区方案

为了了解中国气候条件对沥青路面的影响, 分析了739个气象站1971²000年的气象数据, 以累年年不小于20℃积温、累年累计降水温度指数、累年降水冰冻组合指数和累年极端最低气温作为划分指标, 累年年平均太阳辐射日总量为描述指标, 采用普通克里金和协克里金方法对各指标进行空间化分析, 利用多指标系统聚类、指标划分和图层叠置方法, 提出了中国公路沥青路面气候影响分区方案。方案共分8个一级区和39个二级区, 在北部和青藏高原, 低温和低温期间降水的影响是主要的, 南部则以高温和降水的影响最为显著, 中部各种因素的影响比较均衡, 应综合考虑。

Zoning scheme of climatic influence for asphalt pavement in China

To understand the effect of climatic conditions on asphalt pavement in China, the weather data of 739 weather stations in 1971~2000 were analyzed, average annual accumulated temperature above 20℃, average annual accumulated rain-temperature index, average annual precipitation-freezing index and extremely low air temperature were taken as zoning indices, average daily solar radiation was taken as describing index, the spatial distributions of the indices were analyzed by using Kriging and Cokriging method, and with the methods of cluster analysis, indices division and maps overlay, a climatic zoning scheme was proposed which included 8 first level regions and 39 second level regions. Low temperature and precipitation in low temperature term are main factors impacting asphalt pavement in Northern China and Qinghai-Tibet Plateau, high temperature and precipitation are main aspects in Southern China, however, every factor should be comprehensively considered in Central China because the effect of every factor is relatively balanceable.