Abstract: Because the new and old embankment were combined， there was uneven settlement and crack appeared on the road after reconstruction. According to the actual situation， embankment model was established by finite element analysis software midas GTS. The stress and displacement of the strengthened subgrade and the axial internal force of geogrid under different conditions were calculated. The calculation results indicated that the implanting geogrid in the resumption embankment had effect on the limiting of lateral displacement but little on the vertical settlement. When the step height of binding site was 1.5m， the lateral displacement and the shear stress of embankment slope were smaller. When 3-layer geogrid was added to upper of the combination embankment filling， the internal force tended to be stable.

Key words: highway, resumption embankment, geogrid, midas GTS