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沥青路面面层模量受温度、车辆行驶速度变化而变化,温度越高模量越低,车辆行驶速度越慢模量越低。在夏季高温长大纵坡路段沥青面层模量较低,重载车辆经过时,由于车速较低,面层模量更低,极易导致车辙病害发生。本文通过改变沥青面层模量,分析模量变化对路面结构的力学响应规律,结果表明面层模量增大后,该层中的剪应力将增大,同时该层中的剪应变显著降低,中面层模量变化对路面剪应变累积量的影响程度最大。
Asphalt pavement surface modulus by temperature, vehicle speed changes, the higher the temperature the lower the modulus, the slower the vehicle speed lower modulus. In the summer, the modulus of bitumen asphalt surface is lower when the roadway grows up in the high temperature. When the heavy vehicles pass by, the vehicle speed is lower and the surface layer modulus is lower, which can easily cause the rutting disease. In this paper, the mechanical response of the pavement structure by changing the modulus of asphalt surface is analyzed. The results show that when the surface modulus increases, the shear stress in this layer will increase and the shear strain in this layer will decrease significantly , The change of middle layer modulus has the greatest influence on the cumulative amount of pavement shear strain.