长大纵坡段沥青路面结构研究

Asphalt Pavement Structure at Large Longitudinal Slope

针对长大纵坡沥青路面破坏的特点,结合长寿命路面的设计方法及依托工程的具体情况,研究适合于长大纵坡路段的沥青路面结构,并从其费用及性能方面同常用的沥青混凝土路面结构进行比较。结果表明,本项目采用的结构虽在初建费用上略高于普通的沥青路面,但后期的养护费用及用户费用远小于普通沥青路面,且其路用性能也优于普通的沥青路面,综合其各方面的特点,认为本结构适用于长大纵坡段。

According to the deformation characteristics of the asphalt pavement at large longitudinal slope,combining with the design method of long life pavement and practical engineering,a special asphalt pavement structure adapted to large longitudinal slope is studied and compared with ordinary asphalt pavement structure in terms of cost and performance.The results show that its cost in early stage is more than normal asphalt pavement,but its maintenance cost and user cost are much less than the latter.Meanwhile its road performance is better than ordinary asphalt pavement.Considering all aspects of its characteristics,it is thought that the structure is suitable for large longitudinal slope.