季冻区沥青路面车辙预估模型分析

Prediction method of asphalt pavement rutting in seasonal frozen area

车辙是目前我国沥青路面主要病害之一。针对季冻区年温差大、低温时间长的特点,通过建立沥青混合料的永久变形预估模型,对模型中的温度、轮压、车速参数进行分析,确定车辙叠加计算方法,提出适合有效温度区间特点的车辙累积计算方法,建立季冻区沥青路面的车辙预测模型。

Rutting is one of the major failures of asphalt pavement.According to the seasonal frozen zone parameters such as big annual changes in low temperature for a long time,based on the permanent deformation of asphalt mixture the temperature,wheel pressure and the speed on the model were analyzed,the calculation method suited to the characteristics of temperature range and rutting accumulation were determined.The rutting prediction model of seasonal frozen area were established.