Offshore wind power large-diameter steel pipe pile

Abstract

The invention discloses an offshore wind power large-diameter steel pipe pile which comprises a steel pipe pile body and lifting lugs; the steel pipe pile body is formed by welding a plurality of steel pipe pile pipe sections in a butt joint manner; the lifting lugs are fixed on the outer wall surface of the upper half part of the steel pipe pile body; and a plurality of vent holes are uniformly distributed in the middle of the second steel pipe pile section below the pile top of the steel pipe pile body along the peripheral wall surface of the pile, and the vent holes are staggered from auxiliary components on the steel pipe pile body. According to the offshore wind power large-diameter steel pipe pile, the vent holes are formed, gas in the pile can be exhausted in time, the jacking forceof compressed gas in the pile on a hydraulic hammer can be effectively reduced, the situation that the hydraulic hammer is separated from the steel pipe pile during pile sliding is eliminated, and damage to a large construction ship and the large hydraulic hammer is avoided.

Description

technical field [0001] The invention relates to a large-diameter steel pipe pile for offshore wind power. Background technique [0002] In recent years, offshore wind power has developed rapidly, and single pile foundation is currently the most widely used foundation form. With the increase of offshore wind turbines, the diameter and weight of single pile foundations are getting larger and larger, and the construction of single pile foundations is becoming more and more difficult. The underwater geological conditions of offshore wind power construction are complex, there are soft soil interlayers in some sea areas, the foundation soil is liquefied seriously, and the risk of "pile slipping" of large-diameter steel pipe piles is high. According to the statistics of pile sinking construction in offshore wind farms in recent years, the phenomenon of "sliding piles" of large-diameter steel pipe piles in the coastal waters of Jiangsu is relatively frequent, and there are long dis...

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the defects of the prior art and provide a large-diameter steel pipe pile for offshore wind power, which can discharge the gas in the pile in time, effectively reduce the impact force of the compressed gas in the pile on the hydraulic hammer, and solve the problem of hydraulic pressure. Hammer detached from the steel pipe pile may cause damage to large ship machinery and equipment

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