京港澳高速公路驻信段改扩建工程旧路车辙病害综合分析

Analysis of Pavement Rutting Disease in JGM Expressway ZhuXin Section Reconstruction Project

车辙作为沥青路面最主要的病害之一,严重降低了行车安全性和舒适性,在一定程度上降低了路面承载能力,削弱面层及路面结构的整体强度,使得沥青路面的路用性能迅速下降。依托京港澳高速公路驻信段实体工程,对其沥青路面病害类型与程度进行现场调研。通过该高速公路原有沥青路面车辙病害特征以及对旧料进行抽提回收分析,从材料组成、结构组合等方面,分析旧路结构的车辙成因,为加宽路面的抗车辙技术决策提供参考。

Rutting, as one of main diseases of asphalt pavement, seriously reduces driving safety and comfort. To a certain extent, it also reduces the carrying capacity of the pavement, weakens the overall strength of the surface layer and pavement structure, and makes the pavement performance of asphalt pavement decline rapidly. Based on the physical reconstruction and extension project of G4 (Beijing - Hong Kong - Macao) Expressway, Zhumadian-Xinyang section, the types and degrees of asphalt pavement diseases were investigated on site. Through the rutting disease characteristics and materials extraction of the original asphalt pavement, analyze the rutting causes of the old pavement structure from the aspects of material composition and structure combination, to provide a reference for the anti-rutting technical decision of widening of the pavement.