Patent ID: 6892410

Claim:
A reinforcement structure for a truss bridge having a truss girder, the truss girder having a lower chord and being provided at each end thereof with a main structural frame composed of main structural frame elements, said reinforcement structure comprising: an auxiliary structural frame positioned within each main structural frame, and connected to the main structural frame elements of this main structural frame at connection points; a cable extending in a longitudinal direction of the truss bridge, said cable being connected to and extending between one of the connection points at one end of the truss girder and a corresponding one of the connection points at another end of the truss girder; and deflecting structure, positioned between said cable and the lower chord of the truss girder, for exerting a downwardly directed force to said cable such that an upwardly directed force, corresponding to a reaction force attributable to tension of said cable, is exerted to the lower chord of the truss girder.