CN105862907A - Annular combination type super-large diameter offshore wind power single pile foundation and construction technology thereof - Google Patents
Annular combination type super-large diameter offshore wind power single pile foundation and construction technology thereof Download PDFInfo
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- CN105862907A CN105862907A CN201610386511.0A CN201610386511A CN105862907A CN 105862907 A CN105862907 A CN 105862907A CN 201610386511 A CN201610386511 A CN 201610386511A CN 105862907 A CN105862907 A CN 105862907A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
- Piles And Underground Anchors (AREA)
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Abstract
The invention relates to an annular combination type super-large diameter offshore wind power single pile foundation and a construction technology thereof. The annular combination type super-large diameter offshore wind power single pile foundation is characterized by comprising a first single pile and a second single pile which are arranged in a mutually sleeved mode, the first single pile and the second single pile are both steel pipe piles, and the two single piles are welded through multiple connection steel plates which are arranged between the single piles to form an annular whole. By means of the annular combination type super-large diameter offshore wind power single pile foundation, the problem of super-large diameter pile foundation construction is effectively solved, the horizontal bearing capacity and overturning resistant capacity of the pile foundation are improved, a dynamic response of the foundation structure is reduced, the application range of the single pile foundation is widened, and it is possible that a wind power generator with the capacity of 6 MW or 8 MW or even larger can adopt the single pile. Therefore, the annular combination type super-large diameter offshore wind power single pile foundation and the construction technology thereof have an extremely high actual engineering application value.
Description
Technical field:
The present invention relates to a kind of circular combined super-large diameter offshore wind farm single-pile foundation and construction technology thereof.
Background technology:
Due to increasing the weight of of increasingly serious energy crisis and problem of environmental pollution, the utilization of regenerative resource is increasingly becoming people and grinds
Study carefully and the emphasis of exploitation.The most land wind-powered electricity generation has had large-scale exploitation, but it has many shortcomings and restrictive condition, therefore
Oversea wind power generation initially enters people's sight line with its unique advantage.The advantage of Oversea wind power generation has: offshore wind energy resource stores up
During storage Datong District the most more stable, sea surface roughness is little, sea turn turbulence intensity is little, wind trimming is little, development efficiency is higher, does not exists
The problem of environmental pollution such as noise jamming, landscape destruction, is especially suitable for developing on a large scale.
But the construction of marine wind electric field faces bigger difficulty, offshore wind turbine foundation design-build is considered as to cause sea
The key factor that upper wind-powered electricity generation is relatively costly.
The structural shape of offshore wind plant wind turbine foundation can be divided into gravity type foundation, single-pile foundation, many column foundations, suction type
Basis etc..
Single-pile foundation refers generally to single steel pipe pile foundation, and it is structurally characterized in that convenient and quick construction, good economy performance.Single pile base
Plinth is made up of a steel-pipe pile, and its length of embedment is determined by the depth of water and geological conditions.Single-pile foundation is because of low cost, easy construction
And be applied widely abroad, use the ratio of single-pile foundation to reach more than 70% in Europe.Single-pile foundation be primarily subjected to wind,
The horizontal loads such as wave, its horizontal bearing performance is its key whether being suitable for.Owing to integral rigidity is relatively small, pile body position
Migration is toward relatively big, and the structural dynamic response under wave, wind action is relatively big, easily produces fatigue damage and even lost efficacy.With
The exploitation of offshore wind farm scale, Wind turbine single-machine capacity is increasing, the most jumbo offshore wind farm of 6MW, 8MW
Unit has been researched and developed successfully and has progressively put into application, uses traditional single pile pattern, the diameter of stake and wall thickness to dramatically increase, its
Diameter is likely to be breached more than 10 meters, has both added cost, simultaneously because the shortage of super-large diameter pile driving equipment, can smooth construction
It is implemented as the key of its application.
Summary of the invention:
It is an object of the invention to provide circular combined super-large diameter offshore wind farm single-pile foundation and construction technology, this single pile
Basis efficiently solves a difficult problem for super-large diameter single pile construction and installation, significantly enhances the control to horizontal displacement simultaneously and makees
With, improve the load-carrying properties on basis, greatly reduce the horizontal displacement of structure, relative to simple diameter or the thickness of increasing, tool
There are more preferable economic benefit and application prospect.
The present invention circular combined super-large diameter offshore wind farm single-pile foundation, it is characterised in that: include be mutually nested with
One single pile and the second single pile, described first, second single pile is steel-pipe pile, two single piles by be located between the two several
It is overall that junction steel plate welding forms an annular.
Further, above-mentioned first single pile diameter is less than 8 meters, a diameter of 8 meters of described second single pile, 9 meters or bigger.
Further, above-mentioned first single pile a length of 30-100 rice, described second single pile outside the first single pile, its top
Highly less than the first single pile, junction steel plate upper end extends to the first single pile top and plays distortion, and the second single pile bottom is comparable
First single pile is short, and junction steel plate lower end can make stiffener pattern equally.
Further, above-mentioned junction steel plate is 3,4,5 or more.
Further, the space formed with junction steel plate between above-mentioned two single piles is perfused with concrete or embedding rock concrete
Stake.
The construction technology of the present invention circular combined super-large diameter offshore wind farm single-pile foundation, described circular combined super large
Diameter offshore wind farm single-pile foundation includes the first single pile and the second single pile being mutually nested with, and described first, second single pile is steel
Pile tube, two single piles form an annular entirety by several junction steel plates welding being located between the two；Construction procedure:
1) after the accurate setting-out of factory, make the first single pile and the second single pile, weld first, second single pile group by junction steel plate
Synthesis entirety；
2) site operation marine site determines this place, basis installation site；
3) prefabricated single-pile foundation being transported to relevant position, lifting is had good positioning；
4) arrange pile driving equipment on the first single pile top, the first single pile carries out piling operation, then this single-pile foundation is overall corresponding
Squeeze into sea bed；
5) silt particle within annular space that cleaning single-pile foundation is formed, is irrigated concrete or boring pours into embedded rock pile；
6) in the first single pile upper end, blower fan tower barrel is installed.
The present invention gives a kind of novel offshore wind farm super-large diameter single-pile foundation pattern, by large-diameter pile (first
Single pile) it is welded and fused by junction steel plate with super-large diameter single pile (the second single pile), only hit large-diameter pile during piling
(the first single pile), squeezes into sea bed by the junction steel plate of annular space together by super-large diameter single pile (the second single pile).Squeeze into one
After depthkeeping degree, penetration concrete or according to the several embedding rock of actual demands of engineering choice arrangement in the multiple annular spaces separated
Paxilla, need not penetration concrete or embedding rock in large-diameter pile, greatly reduce while increasing basis integral rigidity
Concrete amount.Meanwhile, this basis efficiently solves the difficult problem that super-large diameter pile foundation construction is installed, and improves pile foundation level and holds
Loading capability and resistance to capsizing, reduce the dynamic response of foundation structure, expands the scope of application of single-pile foundation, make 6MW,
The most jumbo Wind turbines of 8MW uses single pile to be possibly realized.Therefore, this base case have high engineering actual should
By value.
Accompanying drawing illustrates:
Fig. 1 is the organigram of the present invention；
Fig. 2 is junction steel plate one embodiment schematic diagram；
Fig. 3 is junction steel plate another kind embodiment schematic diagram；
Fig. 4 is the A-A profile of Fig. 1；
Fig. 5 is the B-B profile of Fig. 1.
In figure, 1 is large-diameter pile (the first single pile)；2 is super-large diameter single pile (the second single pile)；3 is junction steel plate；4
For concrete perfusion or embedded rock pile；5 is blower fan tower barrel.
Detailed description of the invention:
The present invention circular combined super-large diameter offshore wind farm single-pile foundation, single including the first single pile 1 and second being mutually nested with
Stake 2, described first, second single pile is steel-pipe pile, and two single piles are welded by several junction steel plates 3 being located between the two
Form an annular overall.
Further, above-mentioned first single pile diameter is less than 8 meters, a diameter of 8 meters of described second single pile, 9 meters or bigger.
Further, above-mentioned first single pile a length of 30-100 rice, described second single pile outside the first single pile, its top
Highly less than the first single pile, junction steel plate upper end extends to the first single pile top and plays distortion, and the second single pile bottom is comparable
First single pile is short, and junction steel plate lower end can make stiffener pattern equally.
Further, above-mentioned junction steel plate is 3,4,5 or more.
Further, the space formed with junction steel plate between above-mentioned two single piles is perfused with concrete or embedding rock concrete-pile
4。
Junction steel plate 3 is an elongated plates, and upper and lower end has hypotenuse, strong with increase between the first single pile, the second single pile
Degree；Junction steel plate 3 can also be jagged thin slice, and it includes multiple continuous print inclined tab 301 and transverse sheet 302.In order to design conjunction
Reason, can be designed to tapering by the first single pile and the second single pile, and the first top-down tapering of single pile 6 degree, the second single pile is from upper
Tapering under and 3 degree.In order to increase junction steel plate 3 and concrete or the bonding strength of embedding rock concrete-pile 4, at junction steel plate 3
One or two metal wire can be provided with along its length on side surface.
The construction technology of the present invention circular combined super-large diameter offshore wind farm single-pile foundation, described circular combined super large
Diameter offshore wind farm single-pile foundation includes the first single pile and the second single pile being mutually nested with, and described first, second single pile is steel
Pile tube, two single piles form an annular entirety by several junction steel plates welding being located between the two；Construction procedure:
1) after the accurate setting-out of factory, make the first single pile and the second single pile, weld first, second single pile group by junction steel plate
Synthesis entirety；
2) site operation marine site determines this place, basis installation site；
3) prefabricated single-pile foundation being transported to relevant position, lifting is had good positioning；
4) arrange pile driving equipment on the first single pile top, the first single pile carries out piling operation, then this single-pile foundation is overall corresponding
Squeeze into sea bed；
5) silt particle within annular space that cleaning single-pile foundation is formed, is irrigated concrete or boring pours into embedded rock pile 4；
6) in the first single pile upper end, blower fan tower barrel 5 is installed.
The present invention gives a kind of novel offshore wind farm super-large diameter single-pile foundation pattern, by large-diameter pile (first
Single pile) it is welded and fused by junction steel plate with super-large diameter single pile (the second single pile), only hit large-diameter pile during piling
(the first single pile), squeezes into sea bed by the junction steel plate of annular space together by super-large diameter single pile (the second single pile).Squeeze into one
After depthkeeping degree, penetration concrete or according to the several embedding rock of actual demands of engineering choice arrangement in the multiple annular spaces separated
Paxilla, need not penetration concrete or embedding rock in large-diameter pile, greatly reduce while increasing basis integral rigidity
Concrete amount.Meanwhile, this basis efficiently solves the difficult problem that super-large diameter pile foundation construction is installed, and improves pile foundation level and holds
Loading capability and resistance to capsizing, reduce the dynamic response of foundation structure, expands the scope of application of single-pile foundation, make 6MW,
The most jumbo Wind turbines of 8MW uses single pile to be possibly realized.Therefore, this base case have high engineering actual should
By value.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modify, all should belong to the covering scope of the present invention.
Claims (6)
1. a circular combined super-large diameter offshore wind farm single-pile foundation, it is characterised in that: include that be mutually nested with first is single
Stake and the second single pile, described first, second single pile is steel-pipe pile, and two single piles are by being located at several connections between the two
It is overall that Plate Welding forms an annular.
Circular combined super-large diameter offshore wind farm single-pile foundation the most according to claim 1, it is characterised in that: described
One single pile diameter is less than 8 meters, a diameter of 8 meters of described second single pile, 9 meters or bigger.
Circular combined super-large diameter offshore wind farm single-pile foundation the most according to claim 1, it is characterised in that: described
One single pile a length of 30-100 rice, described second single pile is outside the first single pile, and its upper height is less than the first single pile, connects steel
Plate upper end extends to the first single pile top and plays distortion, and the second single pile bottom is short than the first single pile, junction steel plate lower end
Stiffener pattern can be made equally.
Circular combined super-large diameter offshore wind farm single-pile foundation the most according to claim 1, it is characterised in that: described company
Connecing steel plate is 3,4,5 or more.
Circular combined super-large diameter offshore wind farm single-pile foundation the most according to claim 1, it is characterised in that: described two
The space formed with junction steel plate between single pile is perfused with concrete or embedding rock concrete-pile.
6. the construction technology of a circular combined super-large diameter offshore wind farm single-pile foundation, it is characterised in that: described circular groups
Box-like super-large diameter offshore wind farm single-pile foundation includes the first single pile and the second single pile being mutually nested with, and described first, second is single
Stake is steel-pipe pile, and two single piles are overall by several junction steel plates one annular of welding formation being located between the two；Execute
Work step is rapid:
1) after the accurate setting-out of factory, make the first single pile and the second single pile, weld first, second single pile by junction steel plate and combine
Integral；
2) site operation marine site determines this place, basis installation site；
3) prefabricated single-pile foundation being transported to relevant position, lifting is had good positioning；
4) arrange pile driving equipment on the first single pile top, the first single pile carries out piling operation, then this single-pile foundation is overall corresponding
Squeeze into sea bed；
5) silt particle within annular space that cleaning single-pile foundation is formed, is irrigated concrete or boring pours into embedded rock pile；
6) in the first single pile upper end, blower fan tower barrel is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610386511.0A CN105862907B (en) | 2016-06-04 | 2016-06-04 | Circular combined super-large diameter offshore wind farm single-pile foundation and its construction technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610386511.0A CN105862907B (en) | 2016-06-04 | 2016-06-04 | Circular combined super-large diameter offshore wind farm single-pile foundation and its construction technology |
Publications (2)
| Publication Number | Publication Date |
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| CN105862907A true CN105862907A (en) | 2016-08-17 |
| CN105862907B CN105862907B (en) | 2018-06-22 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812152A (en) * | 2017-03-01 | 2017-06-09 | 南通庞源机械工程有限公司 | A kind of water surface pours the installation method of foundation for tower crane |
| CN108035376A (en) * | 2018-01-15 | 2018-05-15 | 河南理工大学 | A kind of resistance to deformation suitable for goaf place Wind turbines can rectify a deviation basis and its construction method |
| CN108505533A (en) * | 2018-04-19 | 2018-09-07 | 广东工业大学 | A kind of offshore wind farm single-pile foundation mechanism and its construction method |
| CN109457719A (en) * | 2018-10-25 | 2019-03-12 | 中国能源建设集团广东省电力设计研究院有限公司 | Single-pile foundation and its basic pilework |
| CN109811786A (en) * | 2019-03-26 | 2019-05-28 | 福建永福电力设计股份有限公司 | A kind of offshore wind farm composite base structure of outer and inner tube stake combination |
| CN110080272A (en) * | 2019-04-25 | 2019-08-02 | 上海交通大学 | Offshore wind farm single-pile foundation and offshore wind farm device suitable for greater coasting area |
| CN112627223A (en) * | 2020-12-18 | 2021-04-09 | 中国能源建设集团广东省电力设计研究院有限公司 | Double-shell single-pile foundation and installation method thereof |
| CN117332638A (en) * | 2023-09-22 | 2024-01-02 | 中国能源建设集团广东省电力设计研究院有限公司 | Anti-slip steel pipe pile suitable for large megawatt offshore wind turbine and optimization method thereof |
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| CN205776312U (en) * | 2016-06-04 | 2016-12-07 | 福建省新能海上风电研发中心有限公司 | Circular combined super-large diameter offshore wind farm single-pile foundation |
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| JP4713297B2 (en) * | 2005-10-20 | 2011-06-29 | 新日本製鐵株式会社 | Foundation structure and construction method of foundation structure |
| CN201506979U (en) * | 2009-09-14 | 2010-06-16 | 中国水利水电科学研究院 | Grouting connection structure for pile foundation and jacket leg of offshore wind turbine |
| CN102733407A (en) * | 2011-04-01 | 2012-10-17 | 上海同济启明星科技发展有限公司 | Two-ring grouted single pile foundation |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812152A (en) * | 2017-03-01 | 2017-06-09 | 南通庞源机械工程有限公司 | A kind of water surface pours the installation method of foundation for tower crane |
| CN108035376A (en) * | 2018-01-15 | 2018-05-15 | 河南理工大学 | A kind of resistance to deformation suitable for goaf place Wind turbines can rectify a deviation basis and its construction method |
| CN108035376B (en) * | 2018-01-15 | 2023-07-04 | 河南理工大学 | Anti-deformation rectification foundation applicable to goaf site wind turbine generator and construction method thereof |
| CN108505533A (en) * | 2018-04-19 | 2018-09-07 | 广东工业大学 | A kind of offshore wind farm single-pile foundation mechanism and its construction method |
| CN109457719A (en) * | 2018-10-25 | 2019-03-12 | 中国能源建设集团广东省电力设计研究院有限公司 | Single-pile foundation and its basic pilework |
| CN109811786A (en) * | 2019-03-26 | 2019-05-28 | 福建永福电力设计股份有限公司 | A kind of offshore wind farm composite base structure of outer and inner tube stake combination |
| CN109811786B (en) * | 2019-03-26 | 2024-03-26 | 福建永福电力设计股份有限公司 | Offshore wind power composite foundation structure with inner steel pipe pile and outer steel pipe pile combined |
| CN110080272A (en) * | 2019-04-25 | 2019-08-02 | 上海交通大学 | Offshore wind farm single-pile foundation and offshore wind farm device suitable for greater coasting area |
| CN112627223A (en) * | 2020-12-18 | 2021-04-09 | 中国能源建设集团广东省电力设计研究院有限公司 | Double-shell single-pile foundation and installation method thereof |
| CN117332638A (en) * | 2023-09-22 | 2024-01-02 | 中国能源建设集团广东省电力设计研究院有限公司 | Anti-slip steel pipe pile suitable for large megawatt offshore wind turbine and optimization method thereof |
| CN117332638B (en) * | 2023-09-22 | 2024-04-09 | 中国能源建设集团广东省电力设计研究院有限公司 | Anti-slip steel pipe pile suitable for large megawatt offshore wind turbine and optimization method thereof |
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