a single pile foundation

A single-pile foundation and single-pile technology, which is used in foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems of weak stiffness, increase the vibration amplitude of the unit, increase the fatigue load of the single-pile foundation and tower, and reduce the vibration. Effect

Active Publication Date: 2022-07-05
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with other offshore foundations, the monopile foundation has weaker rigidity and is more easily affected by waves and ocean currents in the marine environment, which leads to greater fatigue loads on the monopile foundation and towers, requiring additional monopile foundations and towers. The wall thickness of the frame section is used to bear the influence of fatigue load, and the increase of wall thickness will lead to the increase of investment cost
The action of waves and ocean currents will not only increase the fatigue load of the monopile foundation and tower, but also increase the vibration amplitude of the unit, which will adversely affect the blades, engine room and other components

Method used

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Embodiment Construction

[0052] Attached to the following Figures 1 to 17 The present invention will be further described in detail with specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in a very simplified form and all use inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention. For the purpose, features and advantages of the present invention to be more clearly understood, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. shown in the drawings in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with the technology, and are not used to limit the implementation of the present invention. Therefore, it does not have technical...

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Abstract

The invention discloses a monopile foundation, comprising: a sleeve for being sleeved on a monopile, wherein the inner diameter of the sleeve is larger than the outer diameter of the monopile, and the sleeve is connected to the monopile. An annular cavity is formed between the piles; a support structure is mounted on the sleeve; when the sleeve is placed in water, the support structure can provide buoyancy for the sleeve to float the sleeve in the water; when the sleeve floats in the water, the seawater entering the annular cavity forms a damping pool. This scheme makes use of natural seawater resources and forms a low-cost damping pool at the bottom of the single pile foundation. On the one hand, the damping pool can reduce the fatigue load of waves and ocean currents acting on the single pile foundation, and on the other hand, the damping pool can increase the support of the entire fan. The damping ratio of the structure can reduce the vibration of the unit and reduce the impact on the blades, nacelle and other components.

Description

technical field [0001] The invention relates to the field of offshore power generation devices, in particular to a monopile foundation. Background technique [0002] Most of the offshore wind farms currently developed in China rely on the sea wind to drive the impeller to rotate to obtain electricity. Offshore wind farms are located in the offshore waters, and the depth of seawater is generally 20-30m. Considering factors such as production cost and construction convenience, monopile foundations are mostly used. [0003] As the main development equipment for offshore wind power, the monopile foundation is one of the major investments in offshore wind turbines, which accounts for about 1 / 5 of the total cost. The choice of the wind turbine foundation directly determines the stability and economy of the offshore wind turbine. . Depending on the working water depth of the offshore wind turbine, the choice of the wind turbine foundation is different. From shallow water to deep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/42E02D27/12E02D27/52E02D5/60F03D13/25
CPCE02D27/425E02D27/12E02D5/60F03D13/25Y02E10/727
Inventor 曹广启赵大文缪李红易进马文勇
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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