Railway continuous steel box girder

The utility model relates to a railway continuous steel box girder. In the form construction process of a steel truss girder, the varieties of rod pieces are great, the installation period is long, and the construction progress is low. The construction of a bridge girder which spans an expressway or a high-speed railway is bound to influence the normal running of the underneath railway or the underneath expressway. A closed rectangular cavity is formed by a top plate, a bottom plate and two side webs, the two sides of the top plate extend to form flanges, and the continuous steel box girder is a continuous steel box girder which is in the same height throughout the bridge; plate stiffened ribs are arranged on the inner sides of the webs, and T-shaped stiffened ribs are arranged on the inner side of the bottom plate; T-shaped stiffened ribs are arranged on the inner side of the top plate, and big longitudinal ribs are arranged in the positions corresponding to rails, of the top plate; a plurality of horizontal