湿-热综合指数在沥青路面气候分区中的应用研究

Application in Asphalt Pavement Climate Partition with Damp-heat Composite Index

沥青材料及其混合料的路用性能受温度、湿度的影响显著,在进行沥青路面设计时需要考虑当地的气候水文影响。湖南省地处长江中游,夏季高温多雨,冬季基本无冰冻期。同时,省内由于所处海拔及地形影响,各地区在气温、降雨量方面存在差异,垂直小气候明显。为了更好地提高沥青路面的使用性能及耐久性,需要在自然区划的基础上,对各地气候影响分区进一步细化,为我省沥青路面设计提供参考。

Asphalt materials and it＇s mixture is significant influenced by temperature,and humidity,so we need to consider the local climate and hydrological effect at the designing stage. Hunan province belongs to the typical high temperature and rainy southern region,and there is no freeze in winter basically. At the same time,the differences are exist in temperature and rainfall at various areas in Hunan province,and vertical microclimate is obvious. In order to improve the performance and durability of asphalt pavement,we need to further refine the climate impact partition in different areas based on natural divisions. Then it can provide a reference for asphalt pavement design in our province.