Study on the influence of pavement structure layer parameters on the settlement of expressway widened subgrade
In order to prevent and control the differential settlement of expressway subgrade widening project and ensure the engineering quality,the influence of pavement layer modulus and thickness,base layer modulus and thickness,sub-grade modulus on settlement deformation of expressway widening subgrade were analyzed systematically by using finite ele-ment method.The results show that parameters of the pavement structure layer have a significant effect on the mechanical and deformation characteristics of the widened subgrade.The settlement of expressway widening subgrade decreases signif-icantly with the increase of the thickness and stiffness of pavement structure layer.Improving the thickness and stiffness of pavement structure layer can effectively prevent differential settlement in expressway widening project.
万方数据
维普
