Hot-rolled H-shaped composite structural beam with tenons for bridge engineering

The invention discloses a hot-rolled H-shaped composite structural beam with tenons for bridge engineering, which comprises a concrete bridge deck, a web and hot-rolled flange plates with tenons, the flange plates are welded at two ends of the web, and each flange plate comprises a flange plate body manufactured by a hot rolling process and a tenon integrally hot-rolled on one side of the flange plate body; a first butt joint reference plane is arranged at the top of the tenon; first welding grooves are symmetrically formed in the two sides of the first butt joint reference plane; the web plate comprises a web plate body, the two ends of the web plate are provided with connecting parts in butt joint with the flange plate tenons, the connecting parts are provided with second butt joint datum planes with the same width as the first butt joint datum planes, and second welding grooves are symmetrically formed in the two sides of the second butt joint datum planes; and the second butt joint datum plane of the conn