A top closed steel pipe pile

Abstract

The invention discloses a top closed type steel pipe pile. The top closed type steel pipe pile comprises a steel pipe pile body and a top cover. The top closed type steel pipe pile is characterized inthat a circular table shaped steel pipe is arranged in the upper part of the steel pipe pile body, the bottom edge of the circular table shaped steel pipe is welded to the inner side of the steel pipe pile body, and a ring of internally arranged rubber rings are arranged on the inner side of the circular table shaped steel pipe. An elastic clamping piece is arranged at the position, located belowthe internally arranged rubber rings, of the inner side of the circular table shaped steel pipe. The top cover is in a circular table shape, an included angle of a bus of the top cover and the horizontal plane is equal to an included angle of a bus of the circular table shaped steel pipe and the horizontal plane, a ring of externally arranged rubber rings are arranged on the side surface of the top cover, and the internally arranged rubber rings are matched with the externally arranged rubber rings in a sealing mode after the top cover is sealed. According to the top closed type steel pipe pile, the top cover is installed after the steel pipe pile is infiltrated, so that an enclosed space is formed at the top of the steel pipe pile, and the vertical uplift bearing capacity of the steel pipe pile is greatly improved.

Description

Technical field: [0001] The invention belongs to the field of anchoring foundations for floating offshore platforms and offshore floating wind turbines, and in particular relates to a top-closed steel pipe pile. Background technique: [0002] The suction caisson foundation is a common foundation form for offshore wind power foundations and offshore platforms. Since the shallow soil is mainly composed of silt and silt, and the soil quality is relatively poor, the bearing characteristics of the suction caisson foundation are greatly affected by the shallow soil. At the same time, under the influence of wind, waves, currents and other factors under the complex marine environment, as well as the long-term uplift load, the suction caisson foundation produces large horizontal and vertical bearing capacity and displacement, threatening the safety of the superstructure. However, it is found through research that during the pull-out process of the suction caisson foundation, the top...

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