Marine jacket suction force foundation size calculation method

The embodiment of the invention discloses a method for calculating the size of a suction foundation of a marine jacket. Belongs to the technical field of ocean engineering foundation structures. Obtaining a basic parameter, a soil body parameter and a bearing capacity design value corresponding to the suction foundation of the ocean jacket; on the basis of the basic parameters, the soil body parameters and the bearing capacity design value, a marine jacket suction force basic size equation set is constructed; based on the ocean jacket suction force foundation size equation set, a first foundation size corresponding to the ocean jacket suction force foundation is determined, and penetration characteristic verification, compression bearing capacity verification and uplift bearing capacity verification are carried out based on the first foundation size; and on the basis of the verification result, determining data corresponding to the marine jacket suction foundation, and constructing the marine jacket suction f