Composite pavement and bridge connection transition structure and constructing process thereof

The invention discloses a composite pavement and bridge connection transition structure and constructing process thereof. The composite pavement and bridge connection transition structure comprises a bridge abutment, a plate girder, a base layer, a back wall, an inclined prestressed concrete slab and a roadbed, wherein the roadbed is in contact with the lateral side of the bridge abutment, the end of the plate girder and the back wall are arranged at the top of the bridge abutment, a cold expansion and cold contraction reserved groove is reserved between one side of the back wall and the end of the plate girder, and the other side of the back wall extends outwards to form a bracket. The lateral side of the roadbed is in contact with the lateral side of the bridge abutment, the lateral side of the back wall and the bottom surface of the bracket, the base layer is arranged on the roadbed, and the outer side of the bracket is in contact with the lateral side of the base layer. The bottom surface of the inclined prestressed concrete slab is in contact with the upper surface of the back wall, the upper surface of the bracket and the upper surface of the base layer, the inclined prestressed concrete slab is of a step structure, a first asphalt layer is laid on the upper surface of the inclined prestressed concrete slab, and a concrete layer and a second asphalt layer are sequentially laid on the upper surface of the plate girder. The composite pavement and bridge connection transition structure can effectively avoid bump at bridge head and is long in service life.