Abstract：In order to study the dynamic response of asphalt pavement under the condition of vehicle dynamic load and tire-pavement nonlinear contact, the rubber tire model and vehicle-road interaction model were established by ABAQUS and solved by the central difference method. The applicability of the rubber tire model and vehicle-road interaction model was verified. The results show that: the vehicle-road interaction model with the consideration of rubber tire is feasible. Compared with the concentrated force, the vertical strain at the midpoint of the upper layer wheel trace under the dynamic load is increased by 39.17%; compared with no road roughness, under the action of B-grade road and C-grade road, the suspension elasticity is increased by 3.36% and 14.34% respectively, and the vertical displacement at the midpoint of the upper layer wheel trace is increased by 18.51% and 59.76% respectively. There are tension and compression alternation in vertical, longitudinal and transverse directions of asphalt surface: with the increase of pavement depth, the longitudinal tensile strain appears in both subbase and soil foundation; the maximum longitudinal tensile strain appears in the soil foundation; the maximum transverse tensile strain and the maximum transverse compressive strain appear in the lower layer.
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2021, Vol. 40 
