Optimal Design of Structure for Asphalt Pavement and Subgrade Using Mechanical Analysis

In order to optimize structure combination at field from view of mechanism of interactions between pavement and subgrade,finite element models were established with summary of common distress of ac pavement,deflection、tensile stress at the bottom of base and vertical compress stress at the top of subgrade were chosen as evaluation criterion.Total six structure combinations performance were studied based on FEM results,thus guidance of ac pavement and subgrade were achieved.