Influence Parameters of Asphalt Pavement Rutting Resistance Based on Lateral Displacement Method

Abstract:

In order to study the reason of flow rutting of highway asphalt pavement with serious rutting,a threedimensional FEM model was developed.Based on the evaluating indicator of lateral deformation,the influences of different asphalt layers materials,different structural combination of asphalt layers and different bases on flow rutting were analyzed.The countermeasure to lessen flow rutting is advanced and the design idea of coordinated combination design for asphalt layers is proposed.The use of binder course of graded broken stone not only decreases the trend of lateral flow deformation at high temperature but also reduces the lateral displacement of surface layer and middle layer.

Key words:asphalt pavement; flow rutting; lateral displacement; Poisson’s ratio; coordinated combination design of structure