CN208917861U - A kind of offshore wind turbine gravity type foundation - Google Patents
A kind of offshore wind turbine gravity type foundation Download PDFInfo
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- CN208917861U CN208917861U CN201821141453.6U CN201821141453U CN208917861U CN 208917861 U CN208917861 U CN 208917861U CN 201821141453 U CN201821141453 U CN 201821141453U CN 208917861 U CN208917861 U CN 208917861U
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- type foundation
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- 230000005484 gravity Effects 0.000 title claims abstract description 45
- 239000004567 concrete Substances 0.000 claims abstract description 55
- 239000000945 filler Substances 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000011440 grout Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
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- 230000009471 action Effects 0.000 abstract description 3
- 238000007667 floating Methods 0.000 abstract description 3
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- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
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- 239000011435 rock Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
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- 239000004575 stone Substances 0.000 description 1
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Abstract
The utility model relates to a kind of offshore wind turbine gravity type foundations, the gravity type foundation includes steel-pipe pile, concrete caisson and ballast filler, steel-pipe pile is variable cross-section large diameter steel pipe, shear connector is equipped with along stake week in steel-pipe pile and concrete caisson cover board connecting portion, ballast filler is filled in the compartment of concrete caisson, gravity type foundation is mounted on the sea bed face for being laid with blotter.The utility model combines gravity-type structure using steel-pipe pile-concrete caisson, steel-pipe pile provides enough strength and stiffness for basic structure, construction weight is reduced, using transportation by driving-sinking marine transportation installation method, is not necessarily to heavy-duty floating crane equipment, operation on the sea is simple and convenient, land fabrication is built, and saves the construction time and expense, structure are small by wave and action of ocean current, stability is good, can be used in the marine wind electric field that deep water sea area, large capacity Wind turbines and geological conditions are shallow overburden.
Description
Technical field
The utility model relates to the infrastructure technologies fields of offshore wind turbine, more particularly, to a kind of sea turn
Power generator group gravity type foundation.
Background technique
Currently, wind-power electricity generation has become, field of renewable energy technology is most mature, cost is minimum, to environmental considerations minimum
Energy utilization patterns, be the new energy type of most economic competitiveness.China's marine wind electric field is largely built in platform at present
The multiple sea area of wind, used wind power generating set power is increasing, suffered by the multiple area's high-power wind-driven generator group of typhoon
The load magnitude arrived is huge, requires higher, the increase of blower single-machine capacity and deepwater field sea bed to the stiffness and strength on basis
The diversity of geological conditions proposes new requirement and challenge to the foundation structure pattern of offshore wind farm unit.
Pylon is the important component of wind power generating set, plays support complete machine, provides the work of enough height for wind wheel
With importance is more prominent.Pylon is the performance of entire wind power generating set, so must assure that its enough safety,
Thus, design, manufacture level will directly affect the performance of wind power generating set.With the decline of unit overall price, pylon
The continuous rising of manufacture material price, pylon cost proportion further increase.
Single-pile foundation is one of the main foundation pattern in marine wind turbine generator system base structure, but current single-pile foundation
The stake diameter of design is increasing, and steel consumption is big, and there are a wide range of shallow overburden rock foundations for China Fujian, Coastal Area of Guangdong Province
Sea bed, the sea area depth of water are more than 30 meters, and the embedding rock long construction period of large diameter steel pipe pile, at high cost, uncertain factor is big, single pile base
Plinth is difficult to be applied.
Gravity type foundation is another main foundation pattern in marine wind turbine generator system base structure, it is relied primarily on
The tilting moment and sliding force that basis and ballast weight resistance top fan loads and external environment load generate, make basis and
Blower fan pylon structure remained stable.Gravity type foundation structure part is usually reinforced concrete structures, saves steel, economy effect
Fruit is good, is built using land fabrication mode, does not need marine guidance piling operation, and marine on-site installation work amount is small, when saving construction
Between and expense.But traditional caisson is mostly reinforced concrete structure, and gravity type foundation is due to volume and huge, marine transportation of being self-possessed
It needs with installation by large-scale lifting appliance, while the load accounting that wave and ocean current generate basis is significant, causes traditional
Gravity type foundation is generally only applicable to the shallow sea water that the depth of water is no more than 10 meters.
Utility model content
In view of the foregoing deficiencies of prior art, have the purpose of this utility model is to provide one kind and be applicable in large capacity
Blower and deep water sea area, easy construction, it is at low cost the advantages that offshore wind turbine gravity type foundation.
To achieve the above object, the utility model provides the following technical solutions:
A kind of offshore wind turbine gravity type foundation, it is characterised in that: the gravity type foundation includes that concrete is heavy
Case, the ballast filler in the steel-pipe pile and concrete caisson compartment at position among concrete caisson.
Further, the concrete caisson includes outer wall, floor, inner wall, compartment, cover board and bottom plate, using high intensity
It is concrete prefabricated.
Further, the outer wall is cylinder-shaped thin wall concrete structure.
Further, the steel-pipe pile is variable-section steel pipe, the several pipeline sections successively to be become larger by diameter of section from top to bottom
It is formed by connecting, the steel-pipe pile is connected with concrete caisson cover board using high-strength grouting along shear connector, the steel-pipe pile is equipped with stake week
It connects, the lower end insertion concrete caisson inner wall of the steel-pipe pile is simultaneously connected using high-strength grouting.
Further, the shear connector is made of high-strength steel sheet, several circular holes are offered on steel plate, steel-pipe pile with
Concrete caisson cover board connecting portion encloses the shear connector along steel pipe stake body uniform welding one, and circumferential steel is worn in the circular hole
Muscle connect with the end reinforcing bar of concrete caisson cover board, and pours high-strength grout in connecting portion.
Further, the outer wall is cylinder-shaped thin wall concrete structure；The inner wall is cylinder-shaped thick shell concrete knot
Structure is connected and fixed on the steel-pipe pile and transmitting load to the floor.
Further, the floor includes 8~10 radially distributed concrete slabs, and both ends are heavy with concrete respectively
The inner and outer wall of case connects.
Further, the compartment is made of 8~10 equally distributed fan-shaped regions, and filling ballast is filled out in the compartment
Material.
Further, the cover board is the pyramidal structure being spliced by prefabricated fan-shaped concrete slab, is offered on cover board
For loading the stuffing hole of ballast filler, the cover board upper and lower ends are connect with steel-pipe pile and outer wall respectively.
Further, the ballast filler is sandstone filler.
Further, the gravity type foundation is mounted on the sea bed face for being laid with blotter, and being equipped with around basis prevents
The riprap protection layer washed away.
Offshore wind turbine gravity type foundation provided by the utility model has with following compared with prior art
Beneficial effect:
1. the utility model combines gravity using steel-pipe pile-concrete caisson compared with existing gravity type foundation structure
Formula foundation structure, large diameter steel pipe pile can provide sufficiently large strength and stiffness for basic structure, effectively reduce gravity type
The size and weight of foundation structure, structure is integrally smaller by wave and action of ocean current, and center of gravity is lower, with good stability,
It can be applied to the marine wind electric field that deep water sea area, large capacity Wind turbines and geological conditions are shallow overburden.
2. using transportation by driving-sinking mounting method, basis is not necessarily to heavy-duty floating crane equipment conveying and installation, and operation on the sea is simply square
Just.
3. the utility model can be suitable for hard sand with existing compared with jacket basis, large diameter single pile foundation
Soil or rock foundation sea bed, have it is land build, without piling, operation on the sea amount is small, saving steel, reduces the offshore construction time
And the advantages that expense.
4. offshore wind turbine prestressing force gravity type foundation structure is easily installed and removes, greatly reduces sea and apply
Work workload, has both saved the duration, improves construction efficiency, and reduce project cost, has good economy.
Detailed description of the invention
Fig. 1 is shown as the structural representation of offshore wind turbine gravity type foundation in the utility model one embodiment
Figure；
Fig. 2 is shown as the A-A diagrammatic cross-section of gravity type foundation shown in Fig. 1.
Component label instructions
100 steel-pipe piles
110 shear connectors
200 concrete caissons
210 outer walls
220 floors
230 inner walls
240 compartments
250 cover boards
251 stuffing holes
260 bottom plates
300 ballast fillers
400 blotters
500 riprap protection layers
600 workbenches
700 sea level
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
It should be clear that structure, ratio, size etc. depicted in this specification attached drawing, only to cooperate disclosed in specification
Content, for those skilled in the art understand and read, be not intended to limit the utility model enforceable qualifications,
Therefore not having technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing this reality
With under novel the effect of can be generated and the purpose that can reach, should all still falling in the revealed technology contents institute of the utility model
In the range of capable of covering.Meanwhile it is cited such as "upper", "lower", "left", "right", " centre " and " one " in this specification
Term is merely convenient to being illustrated for narration, rather than to limit the enforceable range of the utility model, the change of relativeness
Or adjustment, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the utility model.
Fig. 1-2 shows the one of a kind of offshore wind turbine gravity type foundation structure of the utility model and its installation method
A embodiment.
As shown in Figure 1, the gravity type foundation includes steel-pipe pile 100, concrete caisson 200 and ballast filler 300.Steel-pipe pile
100 be variable cross-section large diameter steel pipe, is formed by connecting by several pipeline sections that diameter of section from top to bottom successively becomes larger, and concrete is located at
200 intermediate position in caisson, steel-pipe pile 100 are equipped with shear connector 110 along stake week, and the cover board 250 with concrete caisson 200 is using high
Strong grouting connection, lower end are connect with the inner wall 230 of concrete caisson 200 using high-strength grouting.The shear connector 110 is by high intensity
Steel plate is made, and multiple circular holes are offered on steel plate, on 250 connecting portion of cover board of steel-pipe pile 100 and concrete caisson 200, edge
100 pile body uniform welding one of steel pipe encloses shear connector 110, wears circumferential reinforcement in circular hole and connect with the end reinforcing bar of cover board 250, and
High-strength grout is poured in connecting portion.240 internal cavities of the compartment filling ballast filler 300 of concrete caisson 200 is as pressure
Loading.Entire gravity type foundation is mounted on the sea bed face for being laid with blotter 400.Above-mentioned gravity type provided by the utility model
Basis uses steel-pipe pile-concrete caisson composite structure, and large diameter steel pipe pile can provide sufficiently large intensity for basic structure
And rigidity, while construction weight is effectively reduced, compared with traditional gravity type foundation, operation on the sea is simple and convenient, and saving is applied
Between working hour and expense, deep water sea area and large capacity offshore wind farm unit can be applied to.
As depicted in figs. 1 and 2, concrete caisson 200 is by outer wall 210, floor 220, inner wall 230, compartment 240, cover board 250
It is formed with bottom plate 260, it is preferred to use strong concrete is prefabricated to be formed.Outer wall 210 is cylinder-shaped thin wall concrete structure, mainly
Play the role of carrying internal ballast filler and keeps out external wave and ocean current.Floor 220 includes 8 radially distributed mixed
Concrete board, both ends are connect with the outer wall 210 of concrete caisson 200 and inner wall 230 respectively, and steel-pipe pile 100 is born moment of flexure transmitting
To bottom plate 260.Inner wall 230 is cylinder-shaped thick shell concrete structure, plays and is connected and fixed steel-pipe pile 100 and transmitting load to 8
Effect on a radially distributed floor 220.The lower end of steel-pipe pile 100 is inserted in centre bore defined by inner wall 230, and
Positioned at the top of bottom plate 260.Ballast filler 300 is filled in compartment 240, cover board 250 is to be spliced by prefabricated fan-shaped concrete slab
At pyramidal structure, offer the stuffing hole 251 for loading ballast filler on cover board 250, upper end and steel-pipe pile 100 are using cutting
Power key 110 connects and high-strength grout is perfused, and the upper end of the lower end of cover board 250 and outer wall 210 is poured and is integrated, such taper
Cover board 250 just around steel-pipe pile 100 formed one circle inclined support structure, this connection type can be effectively by steel-pipe pile 100
Load is transferred to outer wall 210.Bottom plate 260 is rest directly upon on the sea bed face for being equipped with blotter 40.Shape using the above structure
The stress that formula makes fan loads be transferred to foundation bottom is clear, and 100 size of steel-pipe pile is smaller, and structure is integrally by wave and ocean current
Effect is smaller, and center of gravity is lower, with good stability.
Ballast filler 300 is preferably sandstone filler, such as the gradation filler of sea sand, rubble or seawater, is filled in coagulation
Ballast is used as in the compartment 240 of native caisson 200.Gravity type foundation is very big to ballast demand, coastal area sea sand, broken
Stone equipressure loading supply is sufficient, cheap, advantageously reduces engineering cost.
The installation method of the offshore wind turbine gravity type foundation of the present embodiment, comprising the following steps:
1) bottom plate 260, outer wall 210, floor 220, inner wall 230 and the cover board of concreting concrete caisson 200 are utilized
250, then the upper end of the lower end of cover board 250 and outer wall 210 is poured and is integrated；
2) steel-pipe pile 100 is connect with the inner wall 230 of concrete caisson 200 using high-strength grouting；
3) in 250 connecting portion of cover board of steel-pipe pile 100 and concrete caisson 200, along 100 pile body uniform welding of steel-pipe pile
One circle shear connector 110, wears circumferential reinforcement in circular hole and connect with the end reinforcing bar of cover board 250, and pours in connecting portion high-strength
Grouting material；
4) by gravity type foundation transportation by driving to Attention problems position, by the stuffing hole 251 on cover board 250 toward concrete caisson
Water filling is sunk in 200 compartment 240, is laid on the sea bed face of blotter 400 until basis contacts；
5) ballast filler 300 is filled in the compartment of concrete caisson 200 by the stuffing hole 251 on cover board 250
240；
6) setting prevents the riprap protection layer 500 washed away around gravity type foundation.
The utility model combines gravity type foundation structure using steel-pipe pile-concrete caisson, and large diameter steel pipe pile can be
Foundation structure provides sufficiently large strength and stiffness, while effectively reducing construction weight, using transportation by driving-sinking marine transportation
Installation method is not necessarily to heavy-duty floating crane equipment, and operation on the sea is simple and convenient, and land fabrication is built, and saves construction time and expense, knot
Structure is integrally smaller by wave and action of ocean current, and center of gravity is lower, with good stability, can be applied to deep water sea area, great Rong
It measures Wind turbines and geological conditions is the marine wind electric field of shallow overburden.
To sum up, the utility model effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these change
It also should be regarded as the protection scope of the utility model into replacement.
Claims (9)
1. a kind of offshore wind turbine gravity type foundation, it is characterised in that: the gravity type foundation includes concrete caisson
(200), the steel-pipe pile (100) and the ballast in concrete caisson (200) compartment for being located at concrete caisson (200) intermediate position
Filler (300).
2. offshore wind turbine gravity type foundation according to claim 1, it is characterised in that: the concrete caisson
It (200) include outer wall (210), floor (220), inner wall (230), compartment (240), cover board (250) and bottom plate (260), using height
Strength concrete is prefabricated；The outer wall (210) is cylinder-shaped thin wall concrete structure.
3. offshore wind turbine gravity type foundation according to claim 2, it is characterised in that: the steel-pipe pile
(100) it is variable-section steel pipe, is formed by connecting by several pipeline sections that diameter of section from top to bottom successively becomes larger, the steel-pipe pile
(100) shear connector (110) are equipped with along stake week, the steel-pipe pile (100) and concrete caisson cover board (250) are connected using high-strength grouting
It connects, lower end insertion concrete caisson inner wall (230) of the steel-pipe pile (100) is simultaneously connected using high-strength grouting.
4. offshore wind turbine gravity type foundation according to claim 3, it is characterised in that: the shear connector
(110) it is made of high-strength steel sheet, several circular holes is offered on steel plate, in steel-pipe pile (100) and concrete caisson cover board
(250) connecting portion encloses the shear connector (110) along steel-pipe pile (100) pile body uniform welding one, wears circumferential direction in the circular hole
Reinforcing bar connect with the end reinforcing bar of concrete caisson cover board (250), and pours high-strength grout in connecting portion.
5. offshore wind turbine gravity type foundation according to claim 2, it is characterised in that: the inner wall (230)
For cylinder-shaped thick shell concrete structure, it is connected and fixed on the steel-pipe pile (100) and transmitting load to the floor (220).
6. offshore wind turbine gravity type foundation according to claim 2, it is characterised in that: the floor (220)
Including 8~10 radially distributed concrete slabs, both ends respectively with the inner wall (230) and outer wall of concrete caisson (200)
(210) it connects.
7. offshore wind turbine gravity type foundation according to claim 2, it is characterised in that: the compartment (240)
It is made of 8~10 equally distributed fan-shaped regions, fills ballast filler (300) in the compartment.
8. offshore wind turbine gravity type foundation according to claim 2, it is characterised in that: the cover board (250)
For the pyramidal structure being spliced by prefabricated fan-shaped concrete slab, cover board is offered on (250) for loading filling out for ballast filler
Expect hole (251), cover board (250) upper and lower ends are connect with steel-pipe pile (100) and outer wall (210) respectively.
9. offshore wind turbine gravity type foundation according to claim 2, it is characterised in that: the ballast filler
It (300) is sandstone filler；The gravity type foundation is mounted on the sea bed face for being laid with blotter (400), is equipped with around basis
Prevent the riprap protection layer (500) washed away.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821141453.6U CN208917861U (en) | 2018-07-18 | 2018-07-18 | A kind of offshore wind turbine gravity type foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821141453.6U CN208917861U (en) | 2018-07-18 | 2018-07-18 | A kind of offshore wind turbine gravity type foundation |
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| Publication Number | Publication Date |
|---|---|
| CN208917861U true CN208917861U (en) | 2019-05-31 |
Family
ID=66694232
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821141453.6U Withdrawn - After Issue CN208917861U (en) | 2018-07-18 | 2018-07-18 | A kind of offshore wind turbine gravity type foundation |
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| Country | Link |
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| CN (1) | CN208917861U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108867688A (en) * | 2018-07-18 | 2018-11-23 | 上海勘测设计研究院有限公司 | A kind of offshore wind turbine gravity type foundation and its installation method |
| EP4060121A1 (en) | 2021-03-18 | 2022-09-21 | Subsea 7 Limited | Subsea foundations |
-
2018
- 2018-07-18 CN CN201821141453.6U patent/CN208917861U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108867688A (en) * | 2018-07-18 | 2018-11-23 | 上海勘测设计研究院有限公司 | A kind of offshore wind turbine gravity type foundation and its installation method |
| EP4060121A1 (en) | 2021-03-18 | 2022-09-21 | Subsea 7 Limited | Subsea foundations |
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Granted publication date: 20190531 Effective date of abandoning: 20220815 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190531 Effective date of abandoning: 20220815 |
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