Single pile and gravity combined offshore wind power foundation

A gravity-based foundation, offshore wind power technology, applied in infrastructure engineering, construction, etc., can solve the problems of lack of economic performance, small applicable water depth range, large transportation cost, etc., to improve anti-overturning ability and good application value. , reduce the effect of dynamic response

CN104818727AInactive Publication Date: 2015-08-05FUJIAN YONGFU POWER ENG +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-08-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a single pile and gravity combined offshore wind plant blower foundation. The foundation comprises a steel pipe pile vertically inserted to a seabed; the upper end of the steel pipe pile is connected with a transition section, and the upper end of the transition section is connected with a blower tower cylinder; the lower end of the steel pipe pile is anchored on the seabed by crossing through a gravity type foundation. The technical scheme of the single pile-gravity combined offshore wind plant blower foundation provides a novel foundation model formed by combining a single pile and the gravity; through adding an additional hollow gravity type foundation at the position of the steel pipe pile closing to the seabed, the rigidity of the single pile foundation closing to the seabed face is enhanced, advantages of two foundations are combined, and the using scale of a single-pile foundation is enlarged. The scheme increases the ability of resisting bending torque of the single-pile foundation, reduces the displacement of the pile body, and decreases the diameter and the thickness of the steel pipe pile.
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Description

technical field

[0001] The invention relates to an offshore wind power foundation, in particular to a single pile-gravity combined offshore wind power foundation. Background technique

[0002] The current energy crisis is becoming more and more serious. As the main energy sources, coal and oil not only have limited resources, but also cause relatively serious pollution to the environment. my country has a long coastline and abundant offshore wind energy resources. Offshore wind farms have the advantages of high wind speed, long effective power generation time, no land occupation, and close distance from load centers, etc., and have good prospects for development. The offshore environment is complex and changeable, and the safety, economy and adaptability of the infrastructure are the key factors restricting the development of offshore wind power.

[0003] The structural types of wind turbine foundations in offshore wind farms can be divided into gravity foundations, si...

Examples

Embodiment 1

[0019] as attached figure 1 As shown in and 2, a single pile-gravity combined offshore wind power foundation includes a single steel pipe pile 1, a gravity foundation 2, a transition section 3 and a wind turbine tower 4.

[0020] The gravity foundation is a prefabricated concrete structure, circular, with a hollow hole in the middle. The hole is concentric with the steel pipe pile, and its diameter is 0.2m larger than the steel pipe pile.

[0021] The steel pipe pile is driven into the seabed through a hollow hole in the middle of the through-type foundation, with a diameter of 2-8m and a length of 30-80m.

[0022] The implementation process of the present invention is as follows:

[0023] (1) Dredging and leveling the seabed in the basic sea area;

[0024] (2) Transport the prefabricated gravity foundation 2 to the corresponding position and place it;

[0025] (3) Clean up the impurities in the hollow circular hole in the middle of the gravity foundation, and dri...