Abstract：Abstract: The vehicle-road system acted by three-directional tire force is modeled as a 2DOF vehicle moving along a simply supported double-layer rectangular thin plate on a nonlinear visco-elastic foundation. The nonlinear Gim model and vertical point contact model is used to describe tire forces. The pavement response excited by the moving three-directional tire forces is obtained analytically by Galerkin method. The influence of tire forces on pavement response is studied when the vehicle is braking and lane changing. The pavement response under vertical tire force is compared with that under three-directional tire forces. The effect of parameters on this difference is also analyzed. The results found by this work will be benefit to researching the mechanism of three-directional interaction between vehicle and road and proposing a new research scheme of pavement response calculating and lifespan forecast.
2012, Vol. 31 
