Multiple three-dimensional cast-in-place pile structure and method for pouring pile body

The invention provides a multiple three-dimensional cast-in-place pile structure, which comprises a concrete pile body and a grouting pipe in the pile body, the upper end of the grouting pipe is connected with a grouting device, the grouting pipe comprises a vertical grouting pipe and a ring-shaped grouting pipe, the vertical grouting pipe forms a vertical reinforcing bar in the pile body, the ring-shaped grouting pipe and the vertical grouting pipe are communicated and mutually fixed, the ring-shaped grouting pipe forms a stirrup, slurry outlet holes are uniformly formed in the vertical grouting pipe and the ring-shaped grouting pipe, the lower side of the ring-shaped grouting pipe arranged at the bottom of the vertical grouting pipe is fixed and communicated and connected with a short pipe, and the short pipe is provided with a downward outlet and slurry outlet holes on the side wall of the short pipe. The invention further discloses a method for pouring a pile body by adopting the multiple three-dimensiona