高速公路长大纵坡路段抗车辙技术分析

沥青路面的车辙变形主要是由于沥青混合料在高温荷载作用下的变形引起的,山区长上坡路段高速公路沥青路面车辙是在交通荷载长时间作用、高温和重载的综合作用下产生的。通过对贵州地区高速公路路面车辙病害问题的调查,分析了高速公路长大纵坡路段车辙病害产生的原因,对长大纵坡路段车辙病害形成机理和解决措施进行了研究。研究结果表明,重载交通、坡度、低速行驶是导致高速公路长大纵坡路段车辙病害产生的主要原因,对于山区高速公路长上坡路段的路面结构设计需要从车道设计、沥青混合料设计、路面结构组合设计等方面进行单独设计,从而提高沥青路面结构的抗车辙能力,延长路面的使用寿命。

Analysis on Anti-rutting Technical in Longitudinal Grew Slope of Expressway

Rutting of asphalt pavement deformation is mainly due to the deformation of asphalt mixture at high temperature loads, rutting in longitudinal slope of asphalt pavement is due to the combined effects by traffic load for a long time, high temperature and heavy traffic loads. Through the investi- gation of Heilongjiang Expressway Pavement Rut, the causes of rutting in longitudinal slope of as- phalt pavement is pointed out , and on this basis, the formation mechanism and solutions for the Rut of longitudinal slope are studied. The research results show that the heavy traffic, slope, low speed are the main reasons of rut for the long uphill section of mountain highway pavement. Individual de- sign has been done from lane design, asphalt mix design, pavement structural combination design, thereby improving the rutting resistance o the asphalt pavement structure, are extending the life of the road.