基于行车安全的沥青路面车辙测量与评价指标的研究

Research on Measurement and Evaluation of Asphalt Pavement Rutting Based-on Traffic Safety

车辙是我国高速公路的主要病害之一。国内外采用单一的车辙深度评价指标不能反映车辙危害的全部信息。采用自主开发的车辙仪对几条高速公路的车辙进行了测量,指出了车辙形状的差异性。从车辆行驶安全性的角度出发,采用车辙最大深度、车辙宽度、车辙最大可能积水面积、车辙辙槽的平均曲率半径等多个指标描述车辙的特征,揭示了车辙与行车安全性之间的关系,为今后确定更加合理的车辙评价指标打下基础。

Rutting is one of the major distresses of the expressway pavements in China. At present, rut depth is the only evaluation index for rutting at home and abroad. It cannot show the whole information of rut. A rut-meter was developed independently, which was used for inspecting rut of several expressway pavements. The results showed that the shapes of rut were different, and the shape of rut affects traffic safety. Multi-indexes were adopted, such as rut depth, rut width, maximum possible water catching area and average rut curvature radius, to describe the characteristics of rut and the relation between rut and traffic safety. The study laid a foundation for more rational new rut index.