EPS (Expandable Polystyrene) foam bricks as road subgrade of special road section

The utility model discloses an EPS (Expandable Polystyrene) foam brick serving as a road roadbed of a special road section in the technical field of special municipal road roadbed construction, which comprises a reinforced concrete slab and a sand cushion layer arranged on the bottom side of the reinforced concrete slab, and an EPS foam block filling layer arranged in a step shape is arranged on the bottom side of the sand cushion layer. The EPS foam blocks are connected through claw-shaped metal connecting pieces, and the EPS foam block filling layer is fixed to the foundation at the construction base face and the inclined face through I-shaped metal pins or phi 16 steel bars. The structure can be flexibly applied according to the burial depth and size of the duct structure, the EPS foam blocks are adopted to lay the road roadbed, fixing, installation and connection are simple and rapid, heavy traffic loads can be borne, the load of the duct structure below is low, the construction quality is easy to control