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Pile cylinder composite truss type offshore wind turbine foundation and construction technology thereof

A technology of offshore wind turbines and construction technology, applied in infrastructure engineering, artificial islands, water conservancy projects, etc., can solve the problems that the suction cylinder cannot sink completely at the same time, it is difficult to ensure the level of the structure, and the uplift of soil plugs, etc., to achieve long-term improvement The effects of stability, seabed adaptability, and easy installation

Pending Publication Date: 2019-10-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, as the water depth increases, soil plugs are likely to bulge or even buckle inside the tube, resulting in the suction tube not being able to fully sink to the design depth at the same time, and it is difficult to ensure the levelness of the structure. difficulty

Method used

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  • Pile cylinder composite truss type offshore wind turbine foundation and construction technology thereof
  • Pile cylinder composite truss type offshore wind turbine foundation and construction technology thereof
  • Pile cylinder composite truss type offshore wind turbine foundation and construction technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The pile-tube composite truss type offshore wind power foundation structure provided in this embodiment is as follows: Figure 1-3 As shown, it consists of two major parts, the upper truss structure 1, and the lower part of the suction tube and pile foundation combination.

[0040] The truss structure 1 includes: any jacket structure that can be used to carry wind turbines and towers, and the bottom of the jacket is connected in the form of three jacket legs.

[0041]The combined structure of the suction cylinder 3 and the pile foundation 4 includes: a cylindrical thin-walled suction cylinder 2 with an open bottom, and the top end of the suction cylinder 2 is connected to the legs of the jacket through a reinforcing member 7 . The suction cylinder 2 is provided with an embedded sleeve 3 for installing the pile foundation 4. The embedded sleeve 3 is connected with the suction cylinder 2 through a reinforcing member 8. Both ends of the embedded sleeve 3 are open. The posi...

Embodiment 2

[0043] The pile-tube composite truss type offshore wind power foundation provided in Example 1 and Figure 4-6 , the difference is that the edge of the suction cylinder 2 is provided with an embedded sleeve 3 . The cylinder edge means that the suction cylinder 2 is tangent to the embedded sleeve 3 .

Embodiment 3

[0045] The pile-tube composite truss type offshore wind power foundation provided in Example 1 and Figure 7-9 , the difference is that the suction cylinder 2 is provided with an embedded sleeve 3 outside the cylinder, and the suction cylinder 2 does not need to be provided with a reinforcing member connected with the embedded sleeve 3 .

[0046] The construction process of the pile-tube composite truss-type offshore wind turbine foundation provided in Examples 1-3 includes the following steps:

[0047] (1) Hang the truss structure and the suction tube connected to the bottom of the truss structure to the seabed, penetrate into the seabed after contacting the seabed until the bottom end of the embedded sleeve is submerged in soil, and a closed space is formed in the suction tube;

[0048] (2) Use the underwater suction pump to pump water to the suction cylinder, so that the suction cylinder sinks to the specified elevation. After reaching the specified elevation, turn off the ...

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Abstract

The invention discloses a pile cylinder composite truss type offshore wind turbine foundation which comprises a truss type structure, suction force cylinders and pile foundations. The suction force cylinders are connected with the bottom of the truss type structure, and embedded sleeves provided with the pile foundations are arranged on the suction force cylinders. The embedded sleeves are locatedin the suction force cylinders or on the edge of the cylinders or outside the cylinders. By means of the pile cylinder composite truss type offshore wind turbine foundation, it can be ensured that the structure of the offshore draught fan foundation can have higher stability and bearing capability, ultimate loads such as the typhoon can be resisted, and the seabed adaptability is high. The invention further provides a construction technology of the pile cylinder composite truss type offshore wind turbine foundation, and it can be more effectively ensured that the suction force cylinders sinkto the seabed according to the design depth.

Description

technical field [0001] The invention relates to the field of offshore wind power engineering, in particular to a pile barrel composite truss type offshore wind turbine foundation and a construction process thereof. Background technique [0002] As a renewable energy source, offshore wind power has been vigorously researched and promoted by countries all over the world in recent years. The negative pressure cylinder (suction cylinder) is a large-diameter cylindrical thin-walled structure. As a mooring form and foundation form, the negative pressure cylinder has been widely used in marine structure mooring systems, marine foundation platforms and marine wind turbine foundations. , has the advantages of simple assembly, high construction efficiency and low cost. [0003] For example, the Chinese patent document with publication number CN109914460A discloses a novel suction cylinder combined structure wind power foundation suitable for shallow seas, which relates to the technic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/52E02D27/44
CPCE02D27/52E02D27/44E02B17/027E02B2017/0091E02D27/425E02B2017/0078
Inventor 朱嵘华王复明
Owner ZHEJIANG UNIV
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