Bending fatigue test device for bridge cable strand steel wire at cable saddle

The utility model relates to a bending fatigue test device for a bridge cable strand steel wire at a cable saddle, the bending fatigue test device comprises a test cable saddle, two bearing plates, a cross beam, a radial side plate, an axial tension anchoring structure and a fatigue testing machine, the test cable saddle simulates the cable saddle to fix a cable strand steel wire bundle, the two bearing plates are located on the two sides of the test cable saddle respectively, and the cross beam is connected with the axial tension anchoring structure. The two ends of the cable strand steel wire bundle penetrate through the bearing plates on the two sides respectively, the two axial tensioning anchoring structures are located on the outer sides of the bearing plates on the two sides respectively and used for symmetrically anchoring the cable strand steel wire bundle and applying axial tensioning force, and the beam and the radial side plate act on the cable strand steel wire bundle between the bearing plates o