重载路面车辙评价物元模型构建及应用

Construction and application about the matter-element model for rutting evaluation of heavy load pavement

针对日益增大的重载交通量导致的重载路面车辙成为公路沥青混凝土路面主要病害的特点,在对传统抗车辙性能试验方法存在的不足分析的基础上,构建了车辙评价指标体系,并根据该指标体系和可拓学理论,建立了重载路面车辙评价物元模型,使用Matlab软件编制计算程序,对竹曲高速3个路段的沥青混合料抗车辙性能进行了计算,虽然路段1综合评价值为1.232,小于路段2和路段3的评价值,但其综合评价结果属于良。计算结果客观地反应了实际使用中的沥青混合料的抗车辙性能,为沥青混合料抗车辙性能的提高提供了科学依据。

Wheel tracking on heavy load pavement has become a main disease of asphalt concrete pavement because of the increasing traffic. It was badly threatening the safety of vehicles. Aiming at the deficiencies that lie in the traditional experimental methods for anti - track capability assessment, an evaluation index of wheel tracking and a matter - element model for wheel tracking evaluation of heavy load pavement had been constructed. A calculation program was made with Matlab. The anti - track capability of the asphalt mixture in three sections of Zhuqu highway was calculated. Although the comprehensive evaluation result of section 1 was found to be 1. 232, which is less than sections 2 and 3, it still belongs to grade 2. The results objectively reflect anti - track capability of the asphalt mixture which bas been used in highway and provide scientific foundation for improving anti-track capability.