Anti-scouring device of offshore wind power base structure

A technology for infrastructure and offshore wind power, applied in infrastructure engineering, protection devices, buildings, etc., can solve the problems of difficult piling, increase the length of the pile, and the depth of the piling does not meet the design requirements, and achieve good anti-scour effect and slow mud. Sand start, small structure cost effect

Active Publication Date: 2013-12-25
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Not only that, due to the difficulty of piling, increasing the pile length may cause the piling depth to fail to meet the design requirements
[0006] Therefore, there is certain deficiency in the method for existing anti-scouring

Method used

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  • Anti-scouring device of offshore wind power base structure
  • Anti-scouring device of offshore wind power base structure
  • Anti-scouring device of offshore wind power base structure

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Embodiment Construction

[0030] The present invention is described in detail below in conjunction with accompanying drawing:

[0031] like figure 1 As shown, an anti-scouring device for an offshore wind power foundation structure includes a conical flow guide device. The conical flow guide device is arranged on the periphery of the pile 3 and is located at the mud line. , the skirt plate 2 is arranged in the seabed soil.

[0032] The conical flow guiding device is a conical cap 1 .

[0033] The slope of the conical flow guiding device is 3:1.

[0034] The formula for calculating the radius of the skirt plate 2 is:

[0035]

[0036] In the formula: r is the radius of the apron 2, D is the diameter of the pile 3, S is the depth of the scour pit, is the friction angle of seabed soil.

[0037] When the diameter of the pile 3 is not greater than 2m, the height of the skirt plate 2 is 2.5 times the diameter of the pile 3, and when the diameter of the pile 3 is greater than 2m, the height of the ski...

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Abstract

The invention discloses an anti-scouring device of an offshore wind power base structure. The anti-scouring device comprises a conical flow guiding device. The conical flow guiding device is arranged on the periphery of a pile and located at the position of a mud line. An apron board is arranged below the conical flow guiding device. The apron board is arranged inside seabed soil. The conical flow guiding device is arranged as a conical cap. The gradient of the conical flow guiding device is 3:1. When the diameter of the pile is not larger than 2m, the height of the apron board is 2.5 times the diameter of the pile. When the diameter of the pile is larger than 2m, the height of the apron board is 1.5 times the diameter of the pile. The radius of the apron board is equal to that of a scouring pit. The height of the apron board is equal to the depth of the scouring pit. Compared with a traditional method, the anti-scouring device has the advantages that regular inspection and maintenance are not required, the cost of the added structure is smaller and can be neglected, the anti-scouring effect is good, and the structural dynamic characteristics can not be changed in the service time.

Description

technical field [0001] The invention relates to an anti-scouring device for an offshore wind power basic structure. Background technique [0002] The main form of the foundation structure of offshore wind power is the pile foundation structure. The sea current will cause the pile foundation to be scoured, and a circular scour pit will be formed around the pile, resulting in a reduction in the vertical and lateral bearing capacity of the pile. This is also a common problem on offshore oil platforms. [0003] In order to reduce the impact of scouring on the structure, it has been mainly used to throw stones around the pile or increase the contact length between the pile and the soil, so that the contact length between the pile and the soil after scouring is equal to the design pile length. [0004] The riprap method is to put stones into wire cages and throw them into the sea to form a stone wall around the piles. When scour pits are formed, the gabions sink naturally to fill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D31/06
Inventor 孙文刘超张洪龙张平张积乐
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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