CN204040050U - Mixed type offshore wind power foundation structure - Google Patents
Mixed type offshore wind power foundation structure Download PDFInfo
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- CN204040050U CN204040050U CN201420282389.9U CN201420282389U CN204040050U CN 204040050 U CN204040050 U CN 204040050U CN 201420282389 U CN201420282389 U CN 201420282389U CN 204040050 U CN204040050 U CN 204040050U
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- 230000005484 gravity Effects 0.000 claims abstract description 56
- 239000000945 filler Substances 0.000 claims abstract description 8
- 239000004567 concrete Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000011068 load Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 239000011150 reinforced concrete Substances 0.000 description 5
- 238000007667 floating Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 210000004080 Milk Anatomy 0.000 description 2
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- 239000000463 material Substances 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 235000007926 Craterellus fallax Nutrition 0.000 description 1
- 240000007175 Datura inoxia Species 0.000 description 1
- 241001661194 Dives Species 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000001172 regenerating Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Abstract
The utility model discloses a kind of mixed type offshore wind power foundation structure, comprising the bearing platform for installing wind-driven generator, the hollow pillar stand to downward-extension be located on bearing platform, be connected around column bottom and with column bottom for the gravity structure that holds filler and several pile foundations be positioned at below gravity structure; Gravity structure is the frustum of upper end open, and gravity structure comprises base plate and skirtboard; Base plate is connected with column, and bottom edge is connected with skirtboard, and skirtboard lower end is positioned at the outer side-lower of base plate, and skirtboard lateral surface is provided with several wave eliminating blocks.The utility model has applied widely, and total cost is lower, effectively reduces the souring of current, good stability, the feature of long service life.
Description
Technical field
The utility model relates to field of ocean engineering, especially relates to a kind of applied widely, mixed type offshore wind power foundation structure that good stability, cost are low.
Background technology
Wind energy, as a kind of clean regenerative resource, received the attention of many countries in the world in recent years, and offshore wind farm becomes the inexorable trend of following Wind Power Development with its special advantage.
At present, in the development cost of at sea wind energy turbine set, wind power foundation structure accounts for 15 ~ 25%, and land wind energy turbine set is only 5 ~ 10%.Therefore, the offshore wind power foundation structure developing low cost reduces a main path of offshore wind farm cost.
At present, offshore wind farm crew base mainly contains gravity, single pile, many, the structural shape such as jacket and floating.This several structural shape respectively has pluses and minuses, and the scope of application is different.
Gravity structure develops a kind of pattern comparatively early, is generally reinforced concrete structure, is the basis that in all type of foundation, volume is maximum, weight is maximum, relies on the gravity of self to make blower fan keep vertical.Its advantage is that structure is simple, and manufacturing process is simple, and cost is low, and wind resistance is sudden and violent and stormy waves attack performance is good, and its stability and reliability are best in all bases.Shortcoming is: need sea bed in advance to prepare; Because its volume is large, weight large, make to install inconvenience; Be suitable for depth of water scope too narrow (it is generally acknowledged within 15m), along with the increase of the depth of water, its economy not only can not be embodied, and cost is higher than other type basis on the contrary; Be not suitable for non-subgrade and wash away sea bed.
Single pile structure is that marine wind electric field applies maximum a kind of structures, and single-pile foundation is generally mounted to 10 ~ 20m under sea bed, and the degree of depth depends on preventing seabed base type.The advantage on this basis is that structure simply, does not need to arrange sea bed.Shortcoming is that construction equipment and technology all require higher, causes construction and installation costly.
Many formula structures, be made up of many minor diameter piling bars, its advantage is: can be used for basis, territory, deep-sea, compare with single-pile foundation, except the advantage with single-pile foundation, also overcome the shortcoming that single-pile foundation needs scour protection, multi-pile structure needs scour protection hardly.Shortcoming is: larger by seabottom geology constraint; Should not be used for neritic zone basis, at neritic zone, installation or maintenance vessel likely can collide with a part of structure, add ice loading simultaneously; In addition, construction is high with installation cost.Usable condition: can be applicable to the above marine site of depth of water 30m.
Jacket structure can effectively solve the problem connected under water, jacket structure can be designed to three legs, four legs, also have that employing three leg adds Center stake, four legs add Center stake structure, supporting capacity can increase substantially, and is applicable to the offshore wind farms situation of the depth of water more than 30m.This structure is substantially identical with the technique of three pileworks, but the huge cost of steel material that structure consumes is relatively too high.
Floating structure is as installing the basic platform of Wind turbine, and with mooring system due to sea bed, floating structure is mainly used in 50m with headwater depth, the marine site, deep-sea (50 ~ 200m) of wind resource more horn of plenty.The development cost on floating structure basis is the highest, and application is less at present, along with progress, the development cost reduction of technology, perhaps can become following development priority.
Chinese patent mandate publication number: CN103469829A, authorize publication date on December 25th, 2013, disclose a kind of Anti-scouring device of offshore wind power foundation structure, comprise conical flow guiding device, conical flow guiding device is located at the periphery of stake and is positioned at mud line place, the below of conical flow guiding device is provided with skirtboard, and described skirtboard is arranged in seabed soil.Conical flow guiding device is tapered cap, and the gradient of conical flow guiding device is 3: 1.When the diameter of stake is not more than 2m, the height of skirtboard is the diameter of 2.5 times of stakes, and when the diameter of stake is greater than 2m, skirtboard height is the diameter of 1.5 times of stakes, and the radius of skirtboard is equal with the radius of scour hole, the height of skirtboard and the deep equality of scour hole.The weak point of this invention is, can not be used for neritic zone basis, cost is high.
Summary of the invention
Goal of the invention of the present utility model is that to be suitable for depth of water scope too narrow in order to overcome sea gravity type wind power foundation, many pile type foundations can not be used for neritic zone basis and the high deficiency of cost, provide a kind of applied widely, mixed type offshore wind power foundation structure that good stability, cost are low.
To achieve these goals, the utility model is by the following technical solutions:
A kind of mixed type offshore wind power foundation structure, comprise the bearing platform for installing wind-driven generator, the hollow pillar stand to downward-extension be located on bearing platform, be connected around column bottom and with column bottom for the gravity structure that holds filler and several foundation piles be positioned at below gravity structure; Described gravity structure is the frustum of upper end open, and gravity structure comprises base plate and skirtboard; Base plate is connected with column, and bottom edge is connected with skirtboard, and skirtboard lower end is positioned at the outer side-lower of base plate, and skirtboard lateral surface is provided with several wave eliminating blocks.
Blower fan generator is installed on bearing platform, and bearing platform is used for the load suffered by blower fan and is heavily delivered evenly to substructure in vain, can also provide certain space for personnel's operation during construction, maintenance.
Column is separated into some cabins, and upper load for arranging various unit, circuit etc., and is passed to foundation pile by column inner space.
Gravity type foundation and many pile type foundations have complementarity in many aspects, and it is less that gravity type foundation is suitable for the depth of water, and many pile type foundations are suitable for the depth of water reaches more than 30m, and this degree of depth has covered the region that China coastal seas wind power resources enriches the most; Gravity type foundation stability and good reliability, but scour resistance is poor, and particularly foundation bottom periphery is easily refluxed and draws brush, be not suitable for soft foundation and wash away sea bed, and many pile type foundations scour resistance is good, needs scour protection hardly; Gravity type foundation structure is simple, and cost is lower, and simple many pile type foundations, build and installation cost higher.
Gravity structure of the present utility model is corresponding with common gravity type foundation, and foundation pile is corresponding with many pile type foundations.
Therefore, the utility model has had the advantage in gravity type foundation and many pile type foundations portion concurrently, applied widely; According to different ambient conditionss, design can be optimized, design the foundation structure of applicable different condition, make the total cost of total lower; The souring of effective minimizing current, good stability, long service life.
As preferably, described hollow pillar stand is provided with the spiral strake of some block gaps arrangement.
Spiral strake is distributed in leg surface according to certain plate hight and pitch, upsets the current acting on column, makes to be difficult to around column form whirlpool, reduces the vortex-induced vibration of column, improves the application life of hollow pillar stand.
As preferably, described foundation pile from top to bottom extends to the direction away from base plate center gradually, and described base plate is provided with the pile leader for holding foundation pile top, and pile leader is identical with the quantity of foundation pile.
Pile leader, for connecting gravity structure and foundation pile, for the soft foundation needing to carry out processing, can be in the milk to foundation bottom by the hole of pile leader, and pile leader can be connected by grouting with foundation pile.
Foundation pile is according to the oblique sea bed of certain angle, and the length of foundation pile and inclination angle can be changed according to different situations, and foundation pile can bear the power of horizontal direction and vertical direction, with gravity structure shared wind-driven generator load.At comparatively neritic zone, because gravity pattern cost is lower, main load can be born by gravity structure part; In the larger marine site of the depth of water, because the cost of gravity pattern increases fast with the depth of water, suitably can strengthen the bearing capacity of foundation pile, reduce gravity structure part and weigh in vain, thus reduce the total cost of total.
As preferably, described skirtboard bottom is arranged in sea bed, and skirtboard is horizontal by 40 to 50 degree angles.Skirtboard bottom is arranged in the setting of sea bed, can reduce the building stones of backflow column periphery and the scour of silt.
As preferably, between column bottom and skirtboard, be provided with several floors distributed radially for splitting gravity structure inside.
Compartition between column with skirtboard for connecting column and skirtboard, and is become several parts by floor, plays the effect of the intensity strengthening gravity structure.
As preferably, the cross-shaped distribution of wave eliminating block, wave eliminating block is hemispherical; Gravity filler is rubble or concrete.Wave eliminating block can upset the current flowed through bottom gravity structure, weakens the effect of backflow, thus reduces the scour bottom gravity structure.
As preferably, be provided with ring-type gripper shoe inside skirtboard, bearing platform is inverted cone mesa-shaped.
The setting of ring-type gripper shoe makes the intensity that improve skirtboard, and gravity structure stability is better.
Therefore, the utility model has following beneficial effect: (1) is applied widely; (2) total cost is lower; (3) souring of current is effectively reduced, good stability, long service life.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is another kind of structural representation of the present utility model;
Fig. 3 is a kind of sectional view of the present utility model;
Fig. 4 is a kind of top view of the present utility model.
In figure: bearing platform 1, column 2, gravity structure 3, foundation pile 4, base plate 5, skirtboard 6, wave eliminating block 7, pile leader 8, floor 9, gripper shoe 10, sea level 11, sea bed 12, filler 13.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment is as shown in Figure 1, Figure 2, Figure 3 shows a kind of mixed type offshore wind power foundation structure, comprise the bearing platform 1 for installing wind-driven generator, the hollow pillar stand 2 to downward-extension be located on bearing platform, be connected around column bottom and with column bottom for the gravity structure 3 that holds filler 13 and 3 foundation piles 4 be positioned at below gravity structure; Gravity structure is the frustum of upper end open, and gravity structure comprises base plate 5 and skirtboard 6; Base plate is connected with column, and bottom edge is connected with skirtboard, and skirtboard lower end is positioned at the outer side-lower of base plate, and skirtboard lateral surface is provided with wave eliminating block 7.The cross-shaped distribution of wave eliminating block, wave eliminating block is hemispherical; Bearing platform is inverted cone mesa-shaped.
Hollow pillar stand is provided with the spiral strake of 3 block gap arrangements.As shown in Figure 2, foundation pile from top to bottom extends to the direction away from base plate center gradually, and base plate is provided with the pile leader 8 for holding foundation pile top, and pile leader is identical with the quantity of foundation pile.
As shown in Figure 3, gravity structure is positioned at sea level less than 11, and skirtboard bottom is arranged in sea bed 12, and skirtboard is horizontal by 45 degree of angles.As shown in Figure 4,3 floors distributed radially 9 for splitting gravity structure inside are provided with between column bottom and skirtboard.
Gravity filler is rubble.As shown in Figure 2, ring-type gripper shoe 10 is provided with inside skirtboard.
Construction method of the present utility model is as described below:
Utilize marine piling ship that the three foundation stakes be made up of steel pipe pile are entered sea bed according to certain angle oblique cutting; Be connected with prefabricated gravity structure part by pile leader, the length of stake and inclination angle can be changed according to different situations, make foundation pile can bear the power of horizontal direction and vertical direction, with gravity structure part shared upper load;
At comparatively neritic zone, because gravity pattern cost is lower, main load can be born by gravity structure part; In the larger marine site of the depth of water, because the cost of gravity pattern increases fast with the depth of water, suitably can strengthen the bearing capacity of foundation pile, reduce gravity structure part and weigh in vain, thus reduce the total cost of total.
Column adopts reinforced concrete structure, and column is separated into 5 cabins, and column inner space is for arranging various unit, circuit etc., and Main Function upper load is passed to gravity structure and foundation pile, and bear the effect of under-water wave, ocean current load; Column is prefabricated at precasting yard, then dives by half and to refute or tugboat is transported to installation site on the harbour of bank by each parts assembling of gravity structure integrally; Be connected with gravity structure column bottom by large-scale crane ship, and install the bearing platform of reinforced concrete structure on column top, bearing platform is cast in situs structure; Bearing platform is installed the tower cylinder of wind-driven generator.
Floor adopts reinforced concrete structure, playing the effect of the intensity strengthening structure, and the compartition between column with skirtboard is become four parts, for filling building stones, can reduce the weight of structure itself.
Pile leader is made up of steel pipe, the base plate of gravity part evenly arranges three pile leaders, be mainly used for playing guide effect when beating foundation pile, and for connecting gravity structure and three foundation piles, for the soft foundation needing to carry out processing, can be in the milk to foundation bottom by the hole of pile leader, pile leader can be connected by grouting with foundation pile.
Shirt rim adopts reinforced concrete structure, enters in sea bed by 45° angle oblique cutting, and its Main Function is the building stones of protection column periphery and the silt of foundation bottom, and the scour effect of backflow to foundation bottom can be reduced in the shirt rim at certain inclination angle.
Wave eliminating block adopts concrete material, and hemispherical dome structure, is distributed in skirt face according to certain spacing, and Main Function upsets the current flowing through foundation bottom, weakens the effect of backflow, thus reduce the scour of foundation bottom.
The present embodiment is only not used in restriction scope of the present utility model for illustration of the utility model.In addition should be understood that those skilled in the art can make various changes or modifications the utility model, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the utility model instruction.
Claims (7)
1. a mixed type offshore wind power foundation structure, it is characterized in that, comprising the bearing platform (1) for installing wind-driven generator, the hollow pillar stand to downward-extension (2) be located on bearing platform, be connected around column bottom and with column bottom for the gravity structure (3) that holds filler (13) and several foundation piles (4) be positioned at below gravity structure; Described gravity structure is the frustum of upper end open, and gravity structure comprises base plate (5) and skirtboard (6); Base plate is connected with column, and bottom edge is connected with skirtboard, and skirtboard lower end is positioned at the outer side-lower of base plate, and skirtboard lateral surface is provided with several wave eliminating blocks (7).
2. mixed type offshore wind power foundation structure according to claim 1, is characterized in that, described hollow pillar stand is provided with the spiral strake of some block gaps arrangement.
3. mixed type offshore wind power foundation structure according to claim 1, it is characterized in that, described foundation pile from top to bottom extends to the direction away from base plate center gradually, and described base plate is provided with the pile leader (8) for holding foundation pile top, and pile leader is identical with the quantity of foundation pile.
4. mixed type offshore wind power foundation structure according to claim 1, is characterized in that, described skirtboard bottom is arranged in sea bed, and skirtboard is horizontal by 40 to 50 degree angles.
5. mixed type offshore wind power foundation structure according to claim 1, is characterized in that, is provided with several floors distributed radially (9) for splitting gravity structure inside between column bottom and skirtboard.
6. mixed type offshore wind power foundation structure according to claim 1, is characterized in that, the cross-shaped distribution of wave eliminating block, and wave eliminating block is hemispherical; Gravity filler is rubble or concrete.
7. the mixed type offshore wind power foundation structure according to claim 1 or 2 or 3 or 4 or 5, it is characterized in that, be provided with ring-type gripper shoe (10) inside skirtboard, bearing platform is inverted cone mesa-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420282389.9U CN204040050U (en) | 2014-05-29 | 2014-05-29 | Mixed type offshore wind power foundation structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420282389.9U CN204040050U (en) | 2014-05-29 | 2014-05-29 | Mixed type offshore wind power foundation structure |
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| CN204040050U true CN204040050U (en) | 2014-12-24 |
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| CN201420282389.9U Expired - Fee Related CN204040050U (en) | 2014-05-29 | 2014-05-29 | Mixed type offshore wind power foundation structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155568A (en) * | 2015-07-20 | 2015-12-16 | 三一重型能源装备有限公司 | Offshore wind power generating unit, onshore wind power generating unit foundation and installation method of onshore wind power generating unit foundation |
| CN107829883A (en) * | 2017-09-28 | 2018-03-23 | 中国科学院力学研究所 | A kind of blower fan grouped piles cap basis |
| CN110056013A (en) * | 2018-04-19 | 2019-07-26 | 湖南工程学院 | A kind of Anti-scouring device of offshore wind farm pile foundation |
| CN113718823A (en) * | 2021-09-16 | 2021-11-30 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wind power foundation |
-
2014
- 2014-05-29 CN CN201420282389.9U patent/CN204040050U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155568A (en) * | 2015-07-20 | 2015-12-16 | 三一重型能源装备有限公司 | Offshore wind power generating unit, onshore wind power generating unit foundation and installation method of onshore wind power generating unit foundation |
| CN105155568B (en) * | 2015-07-20 | 2018-05-08 | 三一重型能源装备有限公司 | Offshore wind farm unit, offshore wind farm crew base and its installation method |
| CN107829883A (en) * | 2017-09-28 | 2018-03-23 | 中国科学院力学研究所 | A kind of blower fan grouped piles cap basis |
| CN110056013A (en) * | 2018-04-19 | 2019-07-26 | 湖南工程学院 | A kind of Anti-scouring device of offshore wind farm pile foundation |
| CN110056013B (en) * | 2018-04-19 | 2020-10-23 | 湖南工程学院 | Scour prevention device for offshore wind power pile foundation |
| CN113718823A (en) * | 2021-09-16 | 2021-11-30 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wind power foundation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20150529 |
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| EXPY | Termination of patent right or utility model |