Assembled inclined pile foundation for offshore wind turbines

Abstract

The invention discloses an assembled inclined pile foundation for an offshore fan. Including the wind turbine tower, the steel pile foundation and the transition steel structure connected between the steel pile foundation and the wind turbine tower. The steel structure is connected to each other; the steel structure is transformed into a tree branch structure including a central tube and multiple welded branches around the central tube. The bottom of each branch is coaxially connected to the top of the steel pile foundation through a flange, and the top of the central tube is The blue plate is coaxially connected with the bottom end of the fan tower. The invention has strong bearing capacity, high reliability, good fatigue resistance, no on-site welding and grouting, and relatively low requirements on engineering equipment and construction technology.

Description

technical field [0001] The invention relates to a pile foundation structure, in particular to an assembled inclined pile foundation for offshore wind turbines, which is suitable for wind turbines with large installed capacity and deep sea areas. Background technique [0002] Wind energy is currently one of the fastest growing renewable energy sources with the best industrial prospects. Due to the high wind speed, long-lasting and stable wind force and high wind energy output at sea, the small wind turbulence has little loss of life of wind turbines, and the construction and use of wind turbines are less restricted by land and environmental noise. Wind turbines have moved from land to sea and large-scale become the trend of international wind power development. [0003] At present, offshore wind turbines generally use large-diameter single pile foundations, tripod foundations and tetrapod foundations, jacket foundations, high pile cap foundations and other foundation forms. ...

AI Technical Summary

Problems solved by technology

However, the construction of its bearing platform requires various measures such as steel box, steel cage hoisting and concrete mixing, and the curing time is long; when large-volume concrete is poured, it is very easy to produce large-area temperature cracks and shrinkage cracks on the surface of the bearing platform, which affects the bearing platform. Structural durability; large-volume concrete structure with high cantilever, unfavorable for earthquake resistance; high cost and long construction period

[0008] Based on the above analysis, there is a lack of a new form of pile foundation that is safe, reliable, convenient to construct, and economically reasonable to promote the rapid development of offshore wind power.

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