Abstract
According to the traffic load, road surface temperature, pavement structure parameters and the creep parameters of asphalt mixture of Jiqing highway, the freeway asphalt overlay rutting depth prediction model is constructed with ABAQUS finite element analysis software to simulate numerically on overlay rutting depth, and the relationship among the axial load times, overlay thickness and the rutting depth is studied at the same time. The results of the study show that, the theoretical calculation agrees well with measured results of rutting depth, the relationship among the overlay thickness, the axle load times and the rutting depth coincides with logarithmic function model, and in the same asphalt overlay height, anti-rutting ability on AC-20 is better than that of AC-25 ,AC-20 and AC-25 combinations.
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