Public-rail combined urban bridge

The invention discloses a public-rail combined urban bridge, and belongs to the technical field of bridges. The public-rail combined urban bridge comprises an urban bridge body, a plurality of connecting pieces and two suspension rail beams. The urban bridge comprises a beam body and a pier, and the pier comprises a cover beam and a plurality of pier columns. Each connecting piece comprises a U-shaped plate, a base plate, two side plates, a plurality of first connecting bolts and a plurality of second connecting bolts, the U-shaped plate is arranged at the bottom of one side of one cover beam in a surrounding mode, and the first connecting bolts penetrate through and are connected with two vertical plates of the U-shaped plate and the cover beam; a plurality of second connecting bolts sequentially penetrate through and are connected with the base plate, the cover beam and the horizontal plate of the U-shaped plate, the second connecting bolts are perpendicular to the first connecting bolts, and the suspension