Anti-torque rotation system for bridge around middle pier and using method of anti-torque rotation system

The invention discloses an anti-torque bridge rotating body around a middle pier and a using method thereof.According to the anti-torque bridge rotating body around the middle pier, an anti-torque mechanism is arranged, the torque is the same as the torque formed by the maximum static friction resistance when a bridge rotates, and a bridge body can freely rotate at the position of the middle pier; the rotating mechanism can be matched with a laser ranging structure to monitor the position of the MGA sliding plate in real time in the rotating process, a safety value is set, the rotating center is prevented from deviating excessively in the rotating process, the overall structure is simple, construction is easy and convenient, the influence on an existing structure is small, and the stability and safety of the bridge structure in the rotating process are improved. In the rotation construction process of the bridge, the rotating mechanism is matched with the anti-torque mechanism, friction resistance in the rota