Structure for implanting large-diameter high-strength prestressed pipe pile through drilling

The utility model discloses a structure for implanting a large-diameter high-strength prestressed pipe pile by drilling. The structure comprises a pile sinking layer, a pipe pile and a core filling layer, the pile sinking layer is arranged at the bottom of the drilling guide hole; the tubular pile is vertically arranged in the drilling guide hole, and the bottom end of the tubular pile is immersed in the pile sinking layer; the core filling layer is arranged on the top of the pipe pile and used for blocking and fixing the pipe pile. A cast-in-situ bored pile reinforcement cage is replaced by the PHC800AB tubular pile, and the steel reinforcement cage is pressed to the designed elevation at a time; the pile head can extrude mud at the bottom of the hole, the pile bottom is free of sediment, and in a thick backfill soil layer with poor soil texture, the problems of hole collapse, hole shrinkage, pile hole deflection, large sediment thickness at the bottom of the hole and the like which seriously affect the qual