Reflective cracking dynamic response of asphalt concrete under vehicle loading

摘要

In this paper, the mechanical response of reflective cracking in asphalt concrete pavement under dynamic vehicle loading is proposed. A finite element model is established in ANSYS, and, A half-sine dynamic loading is used to simulate the vehicle loading. And Finally, the dynamic response of the pavement reflective cracking is analyzed under different vehicle load, different crack length and time. The results indicate that the normal stress and maximum vertical deflection on the surface is periodic change with time, The influence for normal stress and maximum vertical deflection on the surface on account of crack length and overload is remarkable, whereas, the influence for pavement deflection on account of crack length is not remarkable.