Steel box girder structure

The utility model provides a steel box girder structure. The steel box girder structure comprises an elastic truss part, a web plate, a top plate and a bottom plate. The webs are arranged on the two sides of the bottom plate. The two sides of the top plate are connected with the tops of the webs. A cavity is formed among the bottom plate, the webs and the top plate. The elastic truss part is arranged in the cavity, the upper end of the elastic truss part is connected with the top plate, the bottom of the elastic truss part is connected with the bottom plate, the two sides of the elastic truss part abut against the web, and the elastic truss part comprises a plurality of arc-shaped plates. According to the steel box girder structure, the elastic truss part is used for absorbing and dispersing impact energy, so that the residual deflection and plastic deformation energy of the steel box girder are reduced, the steel box girder is protected, the situation that the safety and durability of the structure are affec