Novel offshore wind power submersible floating foundation and construction method thereof

Abstract

The invention belongs to the technical field of offshore wind power foundation, and discloses a novel offshore wind power submersible floating foundation and a construction method thereof. The foundation consists of a floating platform and a mooring system. The floating platform comprises a standing column, a floating box and an inclined supporting rod. The mooring system comprises a straight mooring line, an inclined mooring line and a plurality of anchoring units connected through beam elements. During construction, the floating platform and the mooring system with upper draught fan tower barrels are towed separately, and the anchoring units sink and are embedded in the seabed; the upper ends of the straight mooring line and the inclined mooring line pass through reserved hole channels and the inclined supporting rod, and anchoring is conducted on the inclined mooring line and the straight mooring line after the floating platform sinks to the position. The foundation provides enoughbuoyancy stability when towing is conducted, is less affected by wave load when in position, achieves a water tension system, and reduces the difficulty of installing mooring line under water, anchoring foundation provides anti-pulling force through ballast load and friction resistance, the foundation penetrates the seabed through surcharge and internal and external pressure difference, and construction is convenient.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power foundations, and specifically relates to a novel offshore wind power submersible 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 prospec...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problems of large motion response of the offshore wind power floating foundation under wind and wave loads, and the complicated and high cost of the underwater construction process. It provides a new type of offshore wind power submersible 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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