Unequal-length-leg offshore wind power jacket foundation and construction method thereof

A technology of offshore wind power and construction methods, which is applied in infrastructure engineering, construction, etc., can solve the problems of increased construction period and cost, potential safety hazards of jacket foundation, and difficulty of underwater pile cutting, etc., so as to shorten the construction period and facilitate Construction, the effect of reducing the difficulty of construction

Active Publication Date: 2016-07-27
FUJIAN XINNENG OFFSHORE WIND POWER R & D CENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to cut piles underwater, and it increases the construction period and cost, and at the same time poses a safety hazard to the jacket foundation

Method used

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  • Unequal-length-leg offshore wind power jacket foundation and construction method thereof
  • Unequal-length-leg offshore wind power jacket foundation and construction method thereof
  • Unequal-length-leg offshore wind power jacket foundation and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment one: Such as Figure 1~2 As shown, the jacket foundation includes three main conduit legs 101, 102, 103 of different lengths, the three main conduit legs 101, 102, 103 are arranged in a triangle, and the main conduit legs 101, 102, 103 are connected to The angle between the horizontal plane is smaller than the angle between the side of the jacket foundation and the horizontal plane, and the diagonal brace 200 is an X-shaped diagonal brace.

Embodiment 2

[0025] Embodiment two: Such as Figure 3~4 As shown, the jacket foundation includes four main conduit legs 101, 102, 103, 104 of different lengths, the four main conduit legs 101, 102, 103, 104 are distributed in a quadrilateral, the main conduit legs 101, The angle between 102, 103, 104 and the horizontal plane is smaller than the angle between the side of the jacket foundation and the horizontal plane, and the diagonal brace 200 is a combination of X-shaped diagonal brace and K-shaped diagonal brace.

[0026] The main conduit legs of different lengths are set for the foundation of the offshore wind power jacket, instead of directly using the jacket with equal-length legs to support on the piles in the past, the original jacket is composed of two parts with unequal-length legs and corresponding diagonal braces. In actual engineering application, if encountering complex seabed geological conditions and different elevations of the top of the driven pile, the unequal long legs...

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Abstract

The invention relates to an unequal-length-leg offshore wind power jacket foundation and a construction method thereof. The unequal-length-leg offshore wind power jacket foundation comprises at least three unequal-length main guide pipe legs; the main guide pipe legs are distributed in a polygon mode; the height differences among the main guide pipe legs are consistent with pile head elevation differences among corresponding pile foundations; and every two adjacent main guide pipe legs are connected into an integral latticed jacket foundation through inclined struts. The unequal-length-leg offshore wind power jacket foundation consists of the two parts of the inclined struts and the unequal-length legs, so that the unequal-length-leg offshore wind power jacket foundation has the advantages that materials are saved; construction is convenient; the unequal-length-leg offshore wind power jacket foundation is applicable to the environment; and the like. The unequal length structure is adopted by the jacket main legs, so that when geological condition changes are large, and thus driving depths of piles are not consistent, pile cutting work and the like can be omitted; construction is convenient; and meanwhile, material waste can be reduced. Furthermore, due to the unequal-length guide pipe structure, foundation construction cost and the weight of a jacket can be lowered; and obvious social benefit and economic benefit are provided.

Description

technical field [0001] The invention relates to a fan foundation of an offshore wind farm, in particular to an offshore wind power jacket foundation with unequal long legs and a construction method thereof. Background technique [0002] The foundation of the jacket fan in the offshore wind farm is derived from the jacket structure of the offshore oil platform. In foreign wind farms, the jacket is generally in the form of 4 piles. The jacket foundation adopts a spatial quadrilateral prism structure formed by the interconnection of steel pipes. The four main pipe ends of the foundation structure are provided with sleeves, and the sleeves are connected to the pile foundation. Truss connection and shear plate connection can be used. The overall rigidity of the jacket foundation is large, and it is less affected by environmental loads such as waves and currents, and is suitable for sea areas with large water depths. [0003] The traditional offshore wind power jacket foundation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/42
CPCE02D27/425
Inventor 陈强赖福梁宋启明陈基生丁欢欢陈晖陈孝端张辉
Owner FUJIAN XINNENG OFFSHORE WIND POWER R & D CENT CO LTD
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