设级配碎石过渡层沥青路面的非线性力学响应分析

Analysis on Nonlinear Mechanical Response of Asphalt Pavement with Transition Layer of Graded Gravel

为了明确设级配碎石过渡层沥青路面的结构层位功能,对其进行了非线性力学响应分析,结果表明:面层厚度增大,基层层底拉应力和过渡层剪应力减小;过渡层厚度增大,面层剪应力、层底拉应力和过渡层剪应力略有增大,但基层层底拉应力明显减小;基层厚度增加,面层剪应力、层底拉应力和过渡层剪应力增加,基层层底拉应力明显减小。

In order to determine the structural functions of asphalt pavement with transition layer, the analysis on nonlinear mechanical response was carried out. The results indicate that when the surface course turns thick- er, both of the bottom tensile stress of base course and shear stress of transition layer will decrease; when the transition layer turns thicker, the shear stress and bottom tensile stress of surface course and shear stress of transition layer will increase, but the bottom tensile stress of base course will drop remarkably; when the base course turns thicker, the shear stress and bottom tensile stress of surface course and shear stress of transition layer will increase, but the bottom tensile stress will drop dramatically.