To the question of the typical section of the Ba-Quasi heavy-load railway high embankment

using the combination technology of 3Dnonlinear dynamic finite element method and empirical model and considering the dynamic coupling effect of heavy-load vehicle-sleeper-ballastsubgrade-field

the computing method of accumulated settlement of high embankment caused by the long time train vibration load was set up.Firstly

based on the vehicle-track vertical coupling dynamic system theory

the numerical model of heavy-load vehicle-track dynamic coupling system was determined

and the analysis of the system was carried out.Secondly

the finite element model was set up considering the dynamic interaction system of sleeper-ballast-subgrade-field

and the solution of the train vibration load was taken as external excitation of the model.And lastly

combining accumulation of soil deformation prediction model improved by Li and selig the results of the FEM

the basic rule of accumulation deformation was determined comparing the high embankment subgrade reinforced with geogrid and unreinforced

then the research shows that the geogrid plays a very important role in reducing the dynamic accumulated deformation of the subgrade.