Building composite pile foundation structure

The utility model relates to the technical field of composite pile foundations, in particular to a building composite pile foundation structure which comprises a pipe pile, and a plurality of fixing claws are fixedly connected to the outer side of the pipe pile. The reinforcing and fixing mechanism used for reinforcing and fixing the pipe pile is arranged in the pipe pile; wherein the reinforcing and fixing mechanism comprises a plurality of fixing claws arranged on the outer side of the pipe pile, and a fixing assembly is arranged in the pipe pile; after the pipe pile is installed on the ground, a rotating wheel is rotated, meanwhile, a screw rod rotates synchronously, a movable block can move downwards to make contact with a plurality of contact blocks, the contact blocks can be extruded, the contact blocks extrude the corresponding reinforcing rods to rotate outwards, and the reinforcing rods can be opened outwards; the multiple limiting claws and the reinforcing rod move synchronously, the limiting claws