Bridge pier column protection structure and method for water conservancy project

The invention relates to a bridge pier column protection structure and method for a water conservancy project, and aims to solve the technical problem that a current bridge pier column is impacted by a ship, consequently, the pier column is damaged, and a bridge is fractured. Due to the fact that the buffering connecting mechanism and the buffering unit are connected with the rotary force unloading mechanism, when a ship impacts on the protection structure, a buffering rod and a hot rolling spring of the buffering unit are stressed, so that the impact force of the protection structure is reduced, and due to the fact that the rotating body is provided with the force unloading block and the force unloading groove, when the ship impacts on the rotating body, the rotating body is not damaged. According to the rotating body, due to the fact that the balls rotate on the sliding grooves of the ring body, the collision part of the ship deviates, the impact force generated by collision of the ship is effectively reduc