Floating offshore wind power structure foundation with damping effect and stability control method

Abstract

The invention provides a floating offshore wind power structure foundation with a damping effect and a stability control method. The floating offshore wind power structure foundation comprises a floating foundation, wherein the floating foundation is composed of a coaxial multi-section cylinder steel structure and comprises an upper deck working platform, a central stand column and a lower ballastplatform; a fan tower is installed in the center of the upper deck working platform, the upper deck working platform is provided with a plurality of damping pools penetrating through the upper deck working platform, and the damping pools are arranged around the middle part where the fan tower is installed; and the central stand column is divided into a plurality of independent watertight sub-cabins used for water injection in the height direction, and the water amount in each sub-cabin is adjustable. Compared with a traditional stand column type platform, the structure is shallower in draught, can be suitable for shallow water and deep water at the same time, is convenient to tow and install, and facilitates stability control during work.

Description

technical field [0001] The invention relates to a multi-segment cylindrical floating offshore wind power structure foundation with a damping effect, which is suitable for the field of offshore wind power development and has a wide range of water depth applications. Background technique [0002] The foundations of offshore wind power structures can be classified into two types: fixed foundations and floating foundations. Most offshore wind farms built at this stage use fixed foundation technology. However, with the continuous development of offshore wind power, the development of offshore wind farms is gradually developing from offshore to deep sea. When the water depth exceeds a certain depth, the steel consumption of the fixed foundation is large, the cost is expensive, and the installation and construction are relatively difficult. In contrast, the floating structure foundation uses less steel and has a lower cost, which will have better economic benefits. In addition, t...

AI Technical Summary

Problems solved by technology

However, the single-column foundation cannot be used in offshore wind farms with shallow water depth. Its large main scale and draft bring difficulties to construction and installation, and its heaving motion is large, which affects power generation efficiency.

[0006] 3. The tension leg foundation is a compliant foundation, and its tension ribs make the movement performance of the platform in the heaving direction better. However, the tension leg foundation cannot adapt to the tide level changes in my country's coastal waters, and it is also very sensitive to high-frequency loads in the environment. The phenomenon of ringing is easy to occur, and the tension tendon is easy to fatigue, and the cost is high

[0007] To sum up, the typical floating foundations in today’s engineering have more or less deficiencies in practical application, and cannot provide reasonable engineering solutions for both shallow water and deep water situations

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