Offshore wind power single pile foundation for reinforcing deep soft soil foundation

The invention provides an offshore wind power single pile foundation for reinforcing a deep soft soil foundation, and relates to the field of single pile foundations. The offshore wind power single-pile foundation comprises a steel pipe pile body and a reinforcing foundation, the reinforcing foundation comprises a plurality of pile bodies which are connected in an engaged mode, and the pile bodies are any one of cement mixing piles, high-pressure jet grouting piles and vibro-replacement gravel piles; the projection shape of the reinforcing foundation on the seabed surface is in a grid shape, the pile bodies located in the middle of the reinforcing foundation are densely arranged to form a positioning pile structure, and the steel pipe pile bodies are inserted into the positioning pile structure. The pile body is provided with an insertion section located below the seabed surface, and the insertion section of the pile body is arranged in a step-by-step decreasing mode in the radial direction away from the stee