Half-excavated and half-filled light roadbed structure

The utility model discloses a half-excavated and half-filled light roadbed structure which comprises a foundation body, a foundation pit structure is arranged on the surface of the foundation body, a supporting structure is arranged in the foundation pit structure, the foundation pit structure comprises a trapezoid pit slot and inclined planes, the inclined planes are symmetrically distributed on the two side faces of the trapezoid pit slot, and the supporting structure is arranged in the trapezoid pit slot. The supporting structure comprises a vertical framework and a transverse rod, the transverse rod is fixedly welded to the surface of the vertical framework, the two ends of the transverse rod are connected to the surfaces of the inclined faces in a supporting mode, side face grooves are formed in the surfaces of the inclined faces, and bottom grooves are formed in the bottoms of the trapezoidal pit grooves. And backfilling after shaping installation is facilitated, light weight is guaranteed while the str