Segmented box girder structure and construction method thereof

The invention discloses a segmental box girder structure and a construction method thereof, and belongs to the technical field of bridge engineering. The segmental box girder structure comprises a girder body, butt joint ends and butt joint embedded parts. The beam body is a U-shaped box beam section with an opening in the top, and an embedded butt joint rib is arranged in the beam body; the two ends of the beam body are each provided with a butt joint end, the beam body and the butt joint ends are poured and condensed into an integral structure, pre-embedded butt joint ribs can be additionally arranged at the joints between the beam bodies, larger connecting stress is provided, and butt joint embedded parts are arranged in the end faces of the prefabricated and assembled beam bodies of the sections, so that the connecting strength is improved. Steel structure connecting joints and joints are poured into a whole, the strength is improved by welding butt joint embedded parts, reserved clamping grooves of the j