CN201915419U - Single-pile foundation structure with stabilizing wings for offshore wind turbine - Google Patents

Single-pile foundation structure with stabilizing wings for offshore wind turbine Download PDF

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Publication number
CN201915419U
CN201915419U CN2010206969514U CN201020696951U CN201915419U CN 201915419 U CN201915419 U CN 201915419U CN 2010206969514 U CN2010206969514 U CN 2010206969514U CN 201020696951 U CN201020696951 U CN 201020696951U CN 201915419 U CN201915419 U CN 201915419U
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China
Prior art keywords
pile
foundation
stabilizer
foundation pile
offshore wind
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Expired - Lifetime
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CN2010206969514U
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Chinese (zh)
Inventor
李炜
郑永明
周永
赵生校
罗金平
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Powerchina Huadong Engineering Corp Ltd
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Powerchina Huadong Engineering Corp Ltd
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Priority to CN2010206969514U priority Critical patent/CN201915419U/en
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Publication of CN201915419U publication Critical patent/CN201915419U/en
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Abstract

The utility model relates to a single-pile foundation structure with stabilizing wings for an offshore wind turbine, which aims to improve the horizontal bearing capacity of a wind turbine foundation, improve the horizontal bearing capacity of a foundation pile, and reduce the displacement and the flexural torque of a pile body. The single-pile foundation structure has the technical scheme that: a group of stabilizing wings is additionally arranged on the pile body of the foundation pile at the height of a near-surface below a seabed mud surface and are radially arranged taking the foundation pile as a center, and the length direction of the stabilizing wings is parallel to the axial direction of the foundation pile; and the width direction of the stabilizing wings is vertical to the axial direction of the foundation pile. The single-pile foundation structure is suitable for the offshore wind power generation industry, and is especially suitable for being used in the single-pile wind turbine foundation with a large caliber.

Description

A kind of offshore wind generating single pile foundation structure with stabilizer
Technical field
The utility model relates to a kind of offshore wind generating single pile foundation structure with stabilizer, is applicable in the single pile blower foundation of Oversea wind power generation industry, particularly big caliber.
Background technology
The single pile basis is made of single large diameter steel pipe usually, and the bottom is goed deep into providing bearing capacity in the soil; 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 by 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), response for dynamic load is relatively large, produces fatigue damage even inefficacy easily under the long term of dynamic loadings such as wind, wave, stream; And the pile body horizontal movement is wayward.
Summary of the invention
The technical problems to be solved in the utility model is: at 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 utility model 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, described 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, width is axially vertical with foundation pile.
Described stabilizer has 4, arranges with 90 ° of angles.
Be welded with supporting member between described stabilizer and the foundation pile.
Described 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 described 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 described stabilizer is complementary apart from the spacing h and the mud face scour depth on the sea bed face of land.
The beneficial effects of the utility model are: the utility model has installed one group of stabilizer 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 reduced in the utility model, 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 utility model embodiment.
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 as shown in Figure 3, its shape approximation rectangle, consider that pile driving resistance and stress are concentrated, gradient processing can be carried out in 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 °; Stress easily takes place for the top flange 1-2 of stabilizer and foundation pile junction 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 represents the stabilizer inner edge, links to each other with foundation pile; Reference numeral 1-4 represents 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), consider in the practical application that the mud face washes away or factor affecting such as the ground surface soil characteristic is relatively poor, get h with consider the scour depth equivalence, and should suitably adjust by 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 to adjust, in the hope of reaching ideal effect.
The job practices of present embodiment is as follows:
Stabilizer 2 is finished before pile sinking in advance with selection, type selecting, processing and the erection work of foundation pile 1, is optimized type selecting for definite correlation computations that needs to cooperate numerical simulation calculation or be equal to of the position of stabilizer self geometry and relative foundation pile and finally determines; Piling construction is identical with the common foundation pile of no stabilizer, need not to increase other auxiliary equipment or measure, just will consider can increase penetrating resistance after stabilizer is gone into mud, therefore, in the piling later stage, after stabilizer began mud, the power of driving piles should suitably improve (stabilizer is positioned at the top (non-end) of foundation pile, so less to the influence of piling) accordingly; Therefore stabilizer was positioned at below the mud face fully after piling construction was finished, and can not have any impact the Reference numeral 3 expression jackstones among Fig. 1 to the jackstone processing at sea bed place under the construction of superstructure or the necessary situation etc.
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 solutions of the utility model 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; width is axially vertical with foundation pile " as long as this foundation structure, then dropped within the protection domain of the present utility model at foundation pile.

Claims (6)

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, described 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, width is axially vertical with foundation pile.
2. the offshore wind generating single pile foundation structure of band stabilizer according to claim 1 is characterized in that: described stabilizer (2) has 4, arranges with 90 ° of angles.
3. the offshore wind generating single pile foundation structure of band stabilizer according to claim 1 and 2 is characterized in that: be welded with supporting member (6) between described stabilizer (2) and the foundation pile (1).
4. the offshore wind generating single pile foundation structure of band stabilizer according to claim 1 and 2 is characterized in that: described 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
5. the offshore wind generating single pile foundation structure of band stabilizer according to claim 4 is characterized in that: the thickness of described 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.
6. the offshore wind generating single pile foundation structure of band stabilizer according to claim 4 is characterized in that: the top flange of described stabilizer (2) is complementary apart from the spacing h and the mud face scour depth on the sea bed face of land.
CN2010206969514U 2010-12-24 2010-12-24 Single-pile foundation structure with stabilizing wings for offshore wind turbine Expired - Lifetime CN201915419U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206969514U CN201915419U (en) 2010-12-24 2010-12-24 Single-pile foundation structure with stabilizing wings for offshore wind turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102041813A (en) * 2010-12-24 2011-05-04 中国水电顾问集团华东勘测设计研究院 Offshore wind generator single pile base structure with stabilizer fin
CN103174159A (en) * 2011-12-23 2013-06-26 华锐风电科技(集团)股份有限公司 Single tubular pile base equipment of offshore wind power generating set
CN103953059A (en) * 2014-05-04 2014-07-30 云南省电力设计院 Guy anchoring type offshore wind turbine foundation
CN104480961A (en) * 2014-11-19 2015-04-01 华电重工股份有限公司 Anti-scouring construction method for single-pile foundations of offshore wind power
CN104812962A (en) * 2012-09-06 2015-07-29 塔伊·尤哈那 Plated pile for wet terrain or mud which can stand in stable position and needs no bedrock to rest on

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102041813A (en) * 2010-12-24 2011-05-04 中国水电顾问集团华东勘测设计研究院 Offshore wind generator single pile base structure with stabilizer fin
CN102041813B (en) * 2010-12-24 2012-07-11 中国水电顾问集团华东勘测设计研究院 Offshore wind generator single pile base structure with stabilizer fin
CN103174159A (en) * 2011-12-23 2013-06-26 华锐风电科技(集团)股份有限公司 Single tubular pile base equipment of offshore wind power generating set
CN103174159B (en) * 2011-12-23 2015-11-25 华锐风电科技(集团)股份有限公司 Offshore wind turbine single pipe pile foundation device
CN104812962A (en) * 2012-09-06 2015-07-29 塔伊·尤哈那 Plated pile for wet terrain or mud which can stand in stable position and needs no bedrock to rest on
CN103953059A (en) * 2014-05-04 2014-07-30 云南省电力设计院 Guy anchoring type offshore wind turbine foundation
CN103953059B (en) * 2014-05-04 2016-04-27 中国能源建设集团云南省电力设计院有限公司 Guy rope anchoring type offshore wind turbine foundation
CN104480961A (en) * 2014-11-19 2015-04-01 华电重工股份有限公司 Anti-scouring construction method for single-pile foundations of offshore wind power

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AV01 Patent right actively abandoned

Granted publication date: 20110803

Effective date of abandoning: 20120711