Composite pile for green building foundation engineering

The utility model discloses a combined pile for green building foundation engineering, and relates to the technical field of combined piles, the combined pile comprises a plurality of pile bodies, each pile body comprises a connecting piece, a connecting groove and a through pipe, the connecting pieces and the connecting grooves are arranged at the two vertical ends of the pile bodies respectively, one end opening of each through pipe is arranged on the corresponding connecting piece, and the other end opening of each through pipe is arranged on the corresponding connecting piece. One end opening of each through pipe is formed in the bottom of the corresponding connecting groove, the other end opening of each through pipe is formed in the bottom of the corresponding connecting groove, the through pipes penetrate through the two vertical ends of the pile bodies, when the combined pile is installed, the ends, provided with the connecting grooves, of the pile bodies are arranged at the bottom of the combined pil