Offshore wind power floating foundation capable of being floatingly transported and construction method thereof

Abstract

The invention belongs to the technical field of offshore wind power foundations and discloses an offshore wind power floating foundation capable of being floatingly transported and a construction method thereof. The offshore wind power floating foundation is composed of a floating platform and a mooring system. The floating platform comprises an upright, a floating box and oblique stay bars. The mooring system comprises oblique mooring lines, straight mooring lines and an anchoring foundation. In the construction process, the floating platform provided with an upper draught fan tower tube andthe mooring system are towed, and the anchoring foundation sinks to and is embedded in the seabed; and the upper ends of the oblique mooring lines extend into a first reserved hole way, the upper endsof the straight mooring lines penetrate through second reserved hole ways and the oblique star bars, and the oblique mooring lines and the straight mooring lines are anchored after the floating platform sinks in position. In the towing process, sufficient floating stability can be provided, and the influence of wave loads is small in the in-position state; an overwater layered tensioning system is achieved, and the underwater mooring line installation difficulty is reduced; and the anchoring foundation provides pulling resistance through ballast and friction resistance and is installed in theseabed through the heaped load and the inner and outer pressure difference, and construction is convenient.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power foundations, and in particular relates to a floatable offshore wind power floating foundation and a construction method thereof, which have good stability, convenient construction and installation, and low engineering and installation costs. Background technique [0002] The concept of floating foundation comes from the deep-sea oil and gas development platform, which means that the foundation is not in direct contact with the seabed, but is connected to the seabed through anchor cables or cables, so that the wind turbine can move freely in a relatively fixed area. The foundation is currently mainly in the research and development and demonstration stage, but it has strong adaptability to the marine environment. Compared with the implanted foundation, the construction is less difficult and the operation and maintenance costs are lower. Therefore, it has a good application prospect in th...

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Problems solved by technology

[0005] The present invention aims to solve the technical problems that the offshore wind power floating foundation has a large motion response under wind and wave loads, and the underwater construction process is complicated and costly, and provides a floatable offshore wind power floating foundation and its construction method , the water surface of this foundation form is small, the stability is good, its construction and installation are convenient, and the installation cost is low, which can make the offshore wind power floating foundation better applied to actual projects

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