Considering the characteristic of vehicle loads and the actuality of overloading of vehicle in China

simplifying vehicle loads as equivalent static concentrated load

using Boussinesq solution and layer-wise summation method

the influential depth of vehicle loads and its two important influencing factors

embankment height and overloading degree

were analyzed performed on four actual examples. Results indicate that the influential depth of vehicle loads is about 6.0-14.0 m in the condition of overloading; otherwise it is about 6.0-8.0 m; the influential depth of vehicle loads linearly increased with the decrease of embankment height and parabolic increased with the increase of overloading degree of vehicle.