CN102041813B - Offshore wind generator single pile base structure with stabilizer fin - Google Patents
Offshore wind generator single pile base structure with stabilizer fin Download PDFInfo
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- CN102041813B CN102041813B CN 201010620952 CN201010620952A CN102041813B CN 102041813 B CN102041813 B CN 102041813B CN 201010620952 CN201010620952 CN 201010620952 CN 201010620952 A CN201010620952 A CN 201010620952A CN 102041813 B CN102041813 B CN 102041813B
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- 239000003381 stabilizer Substances 0.000 title claims abstract description 63
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000005452 bending Methods 0.000 abstract 1
- 238000004364 calculation method Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003653 coastal water Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to an offshore wind generator single pile base structure with a stabilizer fin, solving the technical problem of providing an offshore wind generator single pile base structure with a stabilizer fin, and aiming to improve the horizontal bearing performance of a fan base, improve the horizontal bearing force of a base pile and lower the displacement and the bending moment of the pile body. The technical scheme for solving the problem comprises: a group of stabilizer fins are additionally arranged on the elevation near the ground surface below a seabed mud surface and on the body of the base pile, the stabilizer fins are radially arranged by taking the base pile as the center, the length direction is parallel to the axial direction of the base pile, and the width direction is vertical to the axial direction of the base pile. The invention is suitable for the industry of offshore wind power generation, in particular the single pile fan base with a large pipe diameter.
Description
Technical field
The present invention relates to a kind of offshore wind generating single pile foundation structure, be applicable in the single pile blower foundation of Oversea wind power generation industry, particularly big caliber with stabilizer.
Background technology
The single pile basis is made up of single large diameter steel pipe usually, and the bottom is goed deep in the soil bearing capacity being provided; The middle part is dipped in and bears long-term ringing such as wave, ocean current, morning and evening tides in the water; Top links to each other with blower fan tower barrel through linkage section.As the simplest a kind of offshore wind farm of structure basis pattern, single column single pile basis is the leading foundation structure pattern of European marine wind electric field.Along with the raising of domestic system stake technology, pile setting capability, the single pile basis also will become the primary structure pattern in China's coastal waters wind energy turbine set construction.
The offshore wind farm structure is mainly born horizontal loads such as wind, wave, stream; In design, need emphasis to consider foundation pile horizontal bearing performance; For the large diameter single pile foundation; Because its " gentleer " (rigidity is less relatively) is relatively large for the response of dynamic load, under the long term of dynamic loadings such as wind, wave, stream, produce fatigue damage even inefficacy easily; And the pile body horizontal movement is wayward.
Summary of the invention
The technical problem that the present invention will solve is: to above-mentioned technical problem; And a kind of offshore wind generating single pile foundation structure with stabilizer is proposed; Be intended to improve the horizontal bearing performance of blower foundation, improve the foundation pile horizontal bearing capacity, reduce the displacement and the moment of flexure of pile body.
The technical scheme that the present invention adopted is: a kind of offshore wind generating single pile foundation structure with stabilizer; Foundation pile with piling construction steel pipe type on sea bed; It is characterized in that: on the pile body of the elevation place of the following near surface of sea bed mud face, said foundation pile, install one group of stabilizer additional; Stabilizer is that the center is radial arrangement with the foundation pile, length direction and foundation pile axially parallel, and width is axially vertical with foundation pile.
Said stabilizer has 4, arranges with 90 ° of angles.
Be welded with supporting member between said stabilizer and the foundation pile.
Said stabilizer is approximate rectangular, and its bottom flange is shaped on 10～20 ° drag reduction angle θ
1, the top flange is shaped on 10～20 ° the slope angle θ that stress is concentrated that slows down
2
The thickness of said stabilizer equals or is slightly larger than the wall thickness of foundation pile; The width of stabilizer be not less than foundation pile stake footpath 1/2, be not more than foundation pile stake footpath; The length of stabilizer is not less than 1 times of foundation pile stake footpath, be not more than 3 times of foundation pile stake footpath.
The top flange of said stabilizer is complementary apart from the spacing h and the mud face scour depth on the sea bed face of land.
The invention has the beneficial effects as follows: one group of stabilizer has been installed in the present invention additional on the foundation pile of blower foundation, and stabilizer is positioned at below the sea bed mud face, and have the following advantages: 1) stabilizer can strengthen foundation pile near surface section pile body stiffness; 2) stabilizer can be given full play to the drag of the preceding soil of near surface shallow-layer stake, strengthens foundation pile horizontal bearing performance, significantly reduces pile body displacement and moment of flexure; When 3) reaching with the equal horizontal bearing performance of the common foundation pile of no stabilizer, the long or stake of the stake of foundation pile directly can be able to reduce among the present invention, and rolled steel dosage significantly reduces; After the long or stake footpath of stake reduces, can significantly reduce material cost and pile sinking cost again; 4) stabilizer is positioned at below the sea bed mud face behind the pile sinking, can not exert an influence to the installation of superstructure, the necessary jackstone processing of sea bed etc.; 5) stabilizer is positioned at the top (non-end) of foundation pile, and is therefore less to the influence of piling.
Description of drawings
Fig. 1 is the facade arrangement diagram of the embodiment of the invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the structural representation of stabilizer in the present embodiment.
The specific embodiment
As shown in Figure 1, the single pile blower foundation of present embodiment has the foundation pile 1 of steel pipe type.Different with traditional fan foundation structure, this example is welded with the stabilizer 2 of 4 steel plate materials (model is Q345C) on the elevation place of the following near surface of sea bed mud face, foundation pile 1 pile body.Described 4 stabilizers 2 are that the center is radial arrangement with foundation pile 1, length direction and foundation pile axially parallel, and width is axially vertical with foundation pile, and the angle between adjacent two stabilizers is 90 °.
As shown in Figure 2, for guaranteeing the bonding strength between stabilizer 2 and the foundation pile 1, also be welded with supporting member 6 between the two at this.The concrete structure of stabilizer is as shown in Figure 3, and its shape approximation rectangle considers that pile driving resistance and stress are concentrated; Can gradient processing be carried out on the upper and lower edge of a wing: the pile sinking later stage; After stabilizer begins mud, resistance will increase, Given this; With the bottom flange 1-1 gradient processing of stabilizer, bottom flange 1-1 is processed into band drag reduction angle θ
1, 10 °≤θ
1≤20 °; The top flange 1-2 of stabilizer and foundation pile junction are prone to take place stress concentrates, and Given this, top flange 1-2 is carried out gradient processing, top flange 1-2 is processed into band slows down the slope angle θ that stress is concentrated
2, 10 °≤θ
2≤20 °.Among Fig. 3, Reference numeral 1-3 representes the stabilizer inner edge, links to each other with foundation pile; Reference numeral 1-4 representes the stabilizer outer rim.
As shown in Figure 1; The stabilizer top flange flushes (h=0 with the sea bed face of land in principle; H is the spacing of the top flange of stabilizer apart from the sea bed face of land); Factor affecting such as consider in the practical application that the mud face washes away or the ground surface soil characteristic is relatively poor is got h and is considered the scour depth equivalence with institute, and should suitably adjust through numerical simulation of optimum result of calculation.
Stabilizer thickness (T) is optional to be equal to the foundation pile wall thickness or increasing slightly;
Stabilizer width (W) is reference with foundation pile stake footpath (D), and span is advised at D/2≤W≤D;
Stabilizer length (L) is reference with foundation pile stake footpath (D), and span is advised at D≤W≤3D;
For the concrete value of above-mentioned four-index (h, L, W, T), should pass through numerical simulation of optimum result of calculation and do suitably adjustment, in the hope of reaching ideal effect.
The job practices of present embodiment is following:
The foregoing description is mainly used in offshore wind farm large diameter steel pipe pile (being foundation pile) the single pile basis; But not as limit, other related minor-diameter steel-tube stake of basis also can use technical scheme of the present invention to improve to improve the horizontal bearing performance of foundation pile for offshore wind farm.No matter be the offshore wind turbine foundation structure of which kind of pattern; " on the elevation place of the following near surface of sea bed mud face, pile body, installed one group of stabilizer additional; stabilizer is that the center is radial arrangement with the foundation pile; length direction and foundation pile axially parallel, and width is axially vertical with foundation pile " as long as this foundation structure, then dropped within protection scope of the present invention at foundation pile.
Claims (4)
1. offshore wind generating single pile foundation structure with stabilizer; Foundation pile (1) with piling construction steel pipe type on sea bed; It is characterized in that: on the pile body of the elevation place of the following near surface of sea bed mud face, said foundation pile (1), install one group of stabilizer (2) additional; Stabilizer is that the center is radial arrangement with the foundation pile, length direction and foundation pile axially parallel, and width is axially vertical with foundation pile;
Said stabilizer (2) has 4, arranges with 90 ° of angles; Stabilizer (2) is approximate rectangular, and its bottom flange (1-1) is shaped on 10～20 ° drag reduction angle θ
1, top flange (1-2) is shaped on 10～20 ° the slope angle θ that stress is concentrated that slows down
2
2. the offshore wind generating single pile foundation structure of band stabilizer according to claim 1 is characterized in that: be welded with supporting member (6) between said stabilizer (2) and the foundation pile (1).
3. the offshore wind generating single pile foundation structure of band stabilizer according to claim 1 and 2 is characterized in that: the thickness of said stabilizer (2) equals or is slightly larger than the wall thickness of foundation pile (1); The width of stabilizer be not less than foundation pile stake footpath 1/2, be not more than foundation pile stake footpath; The length of stabilizer is not less than 1 times of foundation pile stake footpath, be not more than 3 times of foundation pile stake footpath.
4. the offshore wind generating single pile foundation structure of band stabilizer according to claim 1 and 2 is characterized in that: the top flange of said stabilizer (2) is equivalent apart from the spacing h and the mud face scour depth on the sea bed face of land.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010620952 CN102041813B (en) | 2010-12-24 | 2010-12-24 | Offshore wind generator single pile base structure with stabilizer fin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010620952 CN102041813B (en) | 2010-12-24 | 2010-12-24 | Offshore wind generator single pile base structure with stabilizer fin |
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| CN102041813A CN102041813A (en) | 2011-05-04 |
| CN102041813B true CN102041813B (en) | 2012-07-11 |
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Families Citing this family (12)
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| CN103215934B (en) * | 2012-01-20 | 2017-06-06 | 陈东曙 | A kind of offshore foundation platform |
| CN103205980B (en) * | 2013-04-24 | 2015-09-30 | 中国水电顾问集团华东勘测设计研究院 | Offshore wind turbine large diameter single pile foundation and construction method thereof |
| CN103835305B (en) * | 2014-02-26 | 2016-10-05 | 湘电风能（福建）有限公司 | A kind of new catheter frame |
| CN106948360A (en) * | 2017-05-08 | 2017-07-14 | 中国能源建设集团江苏省电力设计院有限公司 | The assembled wing plate sleeve and construction method of offshore wind turbine large diameter steel pipe pile foundation |
| CN107237321B (en) * | 2017-06-15 | 2023-02-14 | 中国能源建设集团江苏省电力设计院有限公司 | Radial small-height winged large-diameter steel pipe pile and horizontal bearing capacity calculation method thereof |
| CN110984214B (en) * | 2019-12-19 | 2024-08-09 | 中国长江三峡集团有限公司 | Offshore wind power monopile-wing plate-rockfill composite foundation and construction method thereof |
| CN110984212A (en) * | 2019-12-19 | 2020-04-10 | 中国长江三峡集团有限公司 | Combined monopile foundation for offshore wind turbine and its construction method |
| CN111962552A (en) * | 2020-08-12 | 2020-11-20 | 中交第三航务工程局有限公司江苏分公司 | Offshore wind power foundation driving-in type rock-socketed single pile construction process |
| CN111962543A (en) * | 2020-08-12 | 2020-11-20 | 中交第三航务工程局有限公司江苏分公司 | Rapid connection and separation process of pile stabilizing platform and mother ship |
| CN112709254B (en) * | 2021-01-20 | 2025-09-02 | 中国长江三峡集团有限公司 | Cantilever bucket structure offshore wind power single pile foundation and method using mortise and tenon joints |
| CN113718839B (en) * | 2021-09-16 | 2022-09-06 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wind power foundation with turbulence strips |
| CN114215098A (en) * | 2022-01-24 | 2022-03-22 | 龙源（北京）风电工程设计咨询有限公司 | Variable-section single-pile foundation under offshore wind power cement surface and construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000314133A (en) * | 1999-04-30 | 2000-11-14 | Nippon Steel Corp | Horizontal load-bearing pile and its arrangement method |
| CN2575155Y (en) * | 2002-10-15 | 2003-09-24 | 中国石化胜利油田有限公司规划设计研究院 | Static pressure enlarging apparatus in operation of pipeline sinking grout enlarge piles |
| CN101812849A (en) * | 2010-04-02 | 2010-08-25 | 中国海洋石油总公司 | Offshore single-pile base structure and installation method thereof |
| CN201915419U (en) * | 2010-12-24 | 2011-08-03 | 中国水电顾问集团华东勘测设计研究院 | Single-pile foundation structure with stabilizing wings for offshore wind turbine |
-
2010
- 2010-12-24 CN CN 201010620952 patent/CN102041813B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000314133A (en) * | 1999-04-30 | 2000-11-14 | Nippon Steel Corp | Horizontal load-bearing pile and its arrangement method |
| CN2575155Y (en) * | 2002-10-15 | 2003-09-24 | 中国石化胜利油田有限公司规划设计研究院 | Static pressure enlarging apparatus in operation of pipeline sinking grout enlarge piles |
| CN101812849A (en) * | 2010-04-02 | 2010-08-25 | 中国海洋石油总公司 | Offshore single-pile base structure and installation method thereof |
| CN201915419U (en) * | 2010-12-24 | 2011-08-03 | 中国水电顾问集团华东勘测设计研究院 | Single-pile foundation structure with stabilizing wings for offshore wind turbine |
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| CN102041813A (en) | 2011-05-04 |
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Owner name: CHINESE HYDROPOWER CONSULTING GROUP EAST CHINA INV Free format text: FORMER NAME: EAST CHINA SURVEY AND DESIGN INST., CHINA HYDROPOWER CONSULTING GROUP Owner name: CHINA POWER GROUP EAST CHINA INVESTIGATION AND DES Free format text: FORMER NAME: CHINESE HYDROPOWER CONSULTING GROUP EAST CHINA INVESTIGATION AND DESIGN INSTITUTE CO.,LTD. |
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Address after: 310014 Hangzhou city in the lower reaches of the city of Zhejiang Wang Road, No. 22 Patentee after: POWERCHINA HUADONG ENGINEERING Corp.,Ltd. Address before: 310014 Hangzhou city in the lower reaches of the city of Zhejiang Wang Road, No. 22 Patentee before: HYDROCHINA HUADONG ENGINEERING Corp.,Ltd. Address after: 310014 Hangzhou city in the lower reaches of the city of Zhejiang Wang Road, No. 22 Patentee after: HYDROCHINA HUADONG ENGINEERING Corp.,Ltd. Address before: 310014 Hangzhou city in the lower reaches of the city of Zhejiang Wang Road, No. 22 Patentee before: Hydrochina Hangzhou Engineering Corp. |