Structure for preventing steel box girder from overturning

The invention discloses a structure for preventing a steel box girder from overturning. The structure comprises a lower force bearing base fixedly connected to the top of a pier and an upper force bearing base fixedly connected to the bottom of the steel box girder, the upper force bearing base and the lower force bearing base are respectively provided with a hinge pin hole, a tensile plate is movably connected between the upper force bearing base and the lower force bearing base, long-strip-shaped displacement holes corresponding to the hinge pin holes in the upper force bearing base and in the lower force bearing base are formed in the upper portion of the tensile plate and in the lower portion of the tensile plate respectively, the hinge pin holes on the upper force bearing base and in the lower force bearing base are movably connected with the corresponding displacement holes through hinge pins, and the length of each displacement hole is equal to the moving distance of the tensile plate. The structure is