Post-grouting device for prestressed concrete pipe pile

The utility model relates to the technical field of building construction, and discloses a prestressed concrete pipe pile post-grouting device which comprises a grouting device body, a main grouting channel is arranged in the grouting device body, the bottom of the main grouting channel is of a three-fork-shaped structure, and first check valves are arranged in forked portions on the two sides of the bottom of the main grouting channel. Pile bottom grouting channels penetrating through the side walls of the two sides of the grouting device body are further connected to the forked parts on the two sides of the bottom of the main grouting channel, pile side grouting channels arranged in a three-fork-shaped structure are further formed in the grouting device body, and the forked parts on the two sides of the pile side grouting channels penetrate out of the positions, close to the ends of the two sides, of the top face of the grouting device body; the middle bifurcated part of the pile side grouting channel is co