Abstract
In part 1, displacement increments were modeled using the relative horizontal distance from the vertical center line of the wheel to the soil particle. In this paper, it was clarified that the shape of displacement trajectories kept the similarity and the size shrunk exponentially with the increase of depth to extend the model taking into consideration the depth. Based on these results, unknown coefficients in the model were expressed as functions of the depth from the soil surface for extending to the two-dimensional displacement increment model. Consequently, strain increments at the arbitrary position in the soil could be formulated, and strains were predicted according to traveling test conditions. The fitness of those were confirmed by comparison with measured data.
