层间接触状态对沥青路面结构剪应力的影响

Influence of Interfacing State on Shear Stress of Asphalt Pavement Structrue

利用ANSYS软件,建立了半刚性基层沥青路面结构三维模型,分析了在相同垂直荷载和3种不同水平荷载作用下,基面层层间接触状态分别处于完全连续、完全光滑和半连续状态时的路面结构最大剪应力。结果表明:随着水平力的增加,沥青面层内的最大剪应力显著增大,且最大剪应力的位置在深度方向上有向上移动的趋势;在相同的水平力作用下,面层和基层层间光滑和半连续状态比完全连续状态时路面结构最大剪应力均有不同程度地增加;路面结构中层间接触条件将增加面层内高应力区的范围。

Using ANSYS software,three-dimensional model of semi-rigid bituminous pavement structure was established,and the maximum shear stress of pavement structure when the interfacing state respectively is completely continuous,completely smooth and semi-continuous was analysed.The results showed that along with the increase of the horizontal force,the maximum shear stress of asphalt surface increased significantly,and the location of the maximum shear stress has the trend of up-moved in depth direction.In the same horizontal force,the maximum shear stress in smooth and semi-continuous has different levels increase compared with completely continuous.The range of high stress area in surface will increase because of the interfacing state in pavement structure.