Simple arch bridge dismantling and rebuilding structure and arch bridge dismantling and rebuilding method

The invention discloses an arch bridge simple demolition and reconstruction structure and an arch bridge demolition and reconstruction method.The arch bridge simple demolition and reconstruction structure comprises anchoring systems arranged on the two sides of a river channel; the tower corresponds to the anchoring system and is arranged on the side, close to the river channel, of the anchoring system; the two ends of a main cable of the cable structure penetrate through the main cable saddles on the tops of the corresponding towers and are fixedly connected with the anchoring systems on the two sides of the river channel after being supported by the main cable saddles. The anchoring system comprises anchor piles, a sliding beam and a rear anchor, the sliding beam is connected with the anchor piles at the two ends, and the sliding beam is provided with the rear anchor capable of sliding. When the arch bridge is dismantled and reconstructed, a method of dismantling part of the original bridge, namely reconstr