The finite element analysis of covering effect performance of highway asphalt pavement on subgrade in Xinjiang

Because of the special climate in Xinjiang, the annual evaporation far outweigh the rainfall and temperature gap between day and night, led to the region´s highway exist strong pavement covering effect, Through experiment road observation data and finite element analysis of the model, the asphalt pavement layer under the upper humidity than gravel road embankment covering layers of roadbed upper humidity was great, Covering effect performance of asphalt pavement was significant, in road structure design should be considered in pavement covering effect of subgrade moisture influence.