PACKER AND PILE FOUNDATION STRUCTURE

Disclosed in the present invention are a packer and a foundation pile structure, relating to the technical field of ocean engineering. The foundation pile structure comprises a foundation pile, a sleeve, and a packer. The sleeve is sleeved on the foundation pile, a gap is reserved between the sleeve and the foundation pile, and an adhesive is filled in the gap. The packer is configured to pack the bottom of the gap between the foundation pile and the sleeve, and the packer comprises a clamp assembly and a cantilever assembly. The clamp assembly is sleeved on the foundation pile and is connected with the bottom of the sleeve, and comprises a plurality of segments, and the segments are connected with each other to form an annular structure; the cantilever assembly comprises a plurality layers of cantilever units stacked on the inner side of the clamp assembly and in the vertical direction, each cantilever unit comprises cantilever members annularly and densely placed at intervals on the inner side of the clamp assembly; and each cantilever member comprises a fixed end and a cantilever end; the fixed ends are connected with the clamp assembly, the cantilever ends is configured to resist on the foundation pile, and the length value of each cantilever member is not smaller than the difference value between the inner radius of the sleeve and the outer radius of the foundation pile. The present invention has a simple structure, does not need to be controlled by complicated hydraulic power, is convenient to construct, and has low construction cost.