北方地区高等级公路沥青路面高温多雨极端气候分区研究

Research on High-temperature and Rainy Extreme Climatic Zoning of High Grade Highway with Asphalt Pavement in North China

针对我国现行公路区划划分标准的不足之处,开展了我国北方地区高等级公路沥青路面高温多雨极端气候分区研究,构建了沥青路面极端气候区划研究的体系框架,明确了极端气候分区的基本原则与方法,确定了北方地区沥青路面高温多雨极端气候分区的总体目的和分区范围。结合北方地区高温多雨极端气候的特点,以各地区夏季多年平均日最高气温Tmean,max和雨量值K作为主导指标,最热7d多年平均气温T7d作为辅助指标,制定了我国北方地区沥青路面高温多雨极端气候分区方案,并采用地理位置+温度特征+降水特征的方法对划分区域命名。分区体现了北方地区夏季极端温度和水分耦合气候条件与气候过程的地域性差异。

Based on the deficiency of the current highway division standards, the research on high- temperature and rainy extreme climatic zoning of high grade highway with asphalt pavement in North China is carried out. The system framework of the extreme climatic zoning of asphalt pavement is constructed, the basic principles and methods are defined and the general purpose and the range of climatic zoning are determined. Combining the characteristics of high-temperature and rainy extreme climate in northern China, taking the mean daily maximum temperature in summer Tmean,max in each region and the rainfall value K as dominant indexes, hottest 7d years average temperature T7d as auxiliary indexes, the high-temperature and rainy extreme climatic zoning for asphalt pavement in northern China is established. The partition areas are named by using the method of geographical position, temperature and water features. The regional differences of the extreme climatic conditions and climatic processes in the northern region are reflected by zoning.