CN108331007A - A kind of foundation structure and installation method for the high-power unit of offshore wind farm - Google Patents
A kind of foundation structure and installation method for the high-power unit of offshore wind farm Download PDFInfo
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- CN108331007A CN108331007A CN201810474080.2A CN201810474080A CN108331007A CN 108331007 A CN108331007 A CN 108331007A CN 201810474080 A CN201810474080 A CN 201810474080A CN 108331007 A CN108331007 A CN 108331007A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000009434 installation Methods 0.000 title claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000008267 milk Substances 0.000 abstract description 4
- 210000004080 milk Anatomy 0.000 abstract description 4
- 235000013336 milk Nutrition 0.000 abstract description 4
- 230000007704 transition Effects 0.000 abstract description 3
- 230000010355 oscillation Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of foundation structures and installation method for the high-power unit of offshore wind farm, which may include aerofoil profile cushion cap, and the aerofoil profile cushion cap includes round platform portion and uniformly respectively at multiple airfoils of round platform portion side；Multiple airfoil lower parts are fixedly connected with support leg respectively；Foundation ring, the foundation ring are fixedly linked with round platform portion top；The structure can be applied to the Wind turbines of large capacity, be 6 paxillas by large-diameter pile lower transition, and be connected by aerofoil profile cushion cap, avoid using large-scale pile hammer in short supply, and pile sinking can be carried out to paxilla using General Oscillation hammer or jump bit.It is easy for construction, aerofoil profile cushion cap（Subsidiary 6 support legs, foundation rings）On land, overall processing manufacture is completed, and directly at sea monoblock type is lifted and connected by being in the milk, and greatly reduces Potential Working Time For Operation At Sea, while can scale manufacture, construction.
Description
Technical field
The present invention relates to wind power foundation facility technology field, more particularly to a kind of for the high-power unit of offshore wind farm
Foundation structure and installation method.
Background technology
Offshore wind farm enters the extensive development stage at this stage, and the single-machine capacity of offshore wind farm is increasing, at present state
Interior offshore wind farm maximum single-machine capacity has reached 8MW, the Wind turbines of the existing 10MW or more of foreign countries.With the increasing of Wind turbines capacity
Greatly, the requirement to offshore wind power foundation structure is higher and higher, and especially for single pile structure, diameter is up to 7 ~ 10m.Using such as
On the one hand this big steel-pipe pile puts forward higher requirements the manufacturing, transport, lifting, it may be necessary to be equipped with dedicated pipe crimping
The stronger lifting equipment of equipment, Lifting Capacity；On the other hand, and it is more crucial be exactly some the piling for needing to be equipped with bigger
Hammer, and the equipment such as pile hammer of large-diameter pile are monopolized by foreign countries at present, can only be introduced by import, therefore belong at home
In scarce resource, and marine wind electric field large-scale development at present, domestic large-scale pile driving equipment has been difficult to meet to be developed at this stage
The needs of construction.
Invention content
The present invention provides a kind of foundation structures and installation method for the high-power unit of offshore wind farm.
The present invention provides following schemes：
A kind of foundation structure and installation method for the high-power unit of offshore wind farm, including：
Aerofoil profile cushion cap, the aerofoil profile cushion cap include round platform portion and uniformly respectively at multiple airfoils of round platform portion side；
Multiple airfoil lower parts are fixedly connected with support leg respectively；
Foundation ring, the foundation ring are fixedly linked with round platform portion top；The foundation ring is used for and major diameter steel cylinder or tower
Cylinder is connected；
More steel-pipe piles, the more steel-pipe piles are connected with multiple support leg one-to-one correspondence respectively；The steel-pipe pile is used for
It is connected with seabed mud face.
Preferably：The basis ring diameter is at least 6~10 meters.
Preferably：The foundation ring is connected by first flange with the major diameter steel cylinder or tower.
Preferably：The support leg includes guide frame and shear connector, when guide plate is used to ensure insertion steel-pipe pile
Positioning, and ensure support leg and the concentricity of steel-pipe pile.
Preferably：The support leg is connected using grouting way with the steel-pipe pile.
Preferably：The steel-pipe pile top is provided with second flange, and the second flange is for installing ring type seal.
Preferably：The airfoil is six.
A kind of installation method of foundation structure for the high-power unit of offshore wind farm, which is characterized in that the method packet
It includes：
The foundation structure overall processing is completed by land；
The steel-pipe pile is squeezed into using piling formula mounting means in the mud face of seabed；
The foundation structure and the steel-pipe pile are installed using lifting mode；
Grouting treatment is carried out after installation is complete, and the support leg that the foundation structure includes is made to be fixedly linked with the steel-pipe pile.
Preferably：The piling mounting means includes carrying out piling after positioning pile foundation using particular manufacturing craft frame to apply
Work.
According to specific embodiment provided by the invention, the invention discloses following technique effects：
By the invention it is possible to a kind of foundation structure and installation method for the high-power unit of offshore wind farm be realized, in one kind
Under realization method, which may include aerofoil profile cushion cap, and the aerofoil profile cushion cap includes round platform portion and uniformly respectively at the circle
Multiple airfoils of platform portion side；Multiple airfoil lower parts are fixedly connected with support leg respectively；Foundation ring, the foundation ring
It is fixedly linked with round platform portion top；The foundation ring with major diameter steel cylinder or tower for being connected；More steel-pipe piles, more
The steel-pipe pile is connected with multiple support leg one-to-one correspondence respectively；The steel-pipe pile with seabed mud face for being connected.This Shen
The foundation structure for the high-power unit of offshore wind farm that please be provided, can be applied to the Wind turbines of large capacity, by large diameter single
Stake lower transition is 6 paxillas, and is connected by aerofoil profile cushion cap, avoids using large-scale pile hammer in short supply, using generally shaking
Dynamic hammer or jump bit can carry out pile sinking to paxilla.It is easy for construction, aerofoil profile cushion cap（Subsidiary 6 support legs, foundation rings）On land
Overall processing manufacture is completed, and directly at sea monoblock type is lifted and connected by being in the milk, and greatly reduces Potential Working Time For Operation At Sea, together
When can scale manufacture, construction.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural representation of foundation structure for the high-power unit of offshore wind farm provided in an embodiment of the present invention
Figure;
Fig. 2 is a kind of vertical view of foundation structure for the high-power unit of offshore wind farm provided in an embodiment of the present invention；
Fig. 3 be it is provided in an embodiment of the present invention connect with steel-pipe pile after first structure schematic diagram；
Fig. 4 be it is provided in an embodiment of the present invention connect with steel-pipe pile after the second structural schematic diagram；
Fig. 5 is a kind of foundation structure construction method flow for the high-power unit of offshore wind farm provided in an embodiment of the present invention
Figure.
In figure：Aerofoil profile cushion cap 1, round platform portion 101, airfoil 102, support leg 103, foundation ring 2, major diameter steel cylinder or tower
3, steel-pipe pile 4.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained belong to what the present invention protected
Range.
Embodiment
It is provided in an embodiment of the present invention a kind of for the high-power machine of offshore wind farm referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5
Group foundation structure, as shown in Figure 1 and Figure 2, which includes aerofoil profile cushion cap 1, the aerofoil profile cushion cap 1 include round platform portion 101 and
Uniformly respectively at multiple airfoils 102 of 101 side of round platform portion；Multiple 102 lower parts of the airfoil are respectively fixedly connected with
There is support leg 103；
Foundation ring 2, the foundation ring 2 are fixedly linked with 101 top of round platform portion；The foundation ring 2 is used for and Large-diameter Steel
Cylinder or tower 3 are connected；
More steel-pipe piles 4, the more steel-pipe piles 4 are connected with multiple support legs 103 one-to-one correspondence respectively；The steel-pipe pile
4 with seabed mud face for being connected.
Further, 2 diameter of the foundation ring is at least 6~10 meters.The foundation ring 2 by first flange with it is described big
Diameter steel cylinder or tower are connected.The support leg includes guide frame and shear connector, and guide plate is inserted into steel-pipe pile for ensureing
When positioning, and ensure support leg and the concentricity of steel-pipe pile.The support leg is connected using grouting way with the steel-pipe pile.
The steel-pipe pile top is provided with second flange, and the second flange is for installing ring type seal.The airfoil is six.
The foundation structure is mainly by 6 steel-pipe piles, aerofoil profile suspended deck structure（Band foundation ring）, top large diameter steel pipe structure or
Tower forms.For the basic ring structure of setting for being connect with top large diameter steel pipe or tower, lower part is 6 subsidiary among aerofoil profile cushion cap
Support leg structure is for being inserted into steel-pipe pile.The structure is related to 2 kinds of application ideas, i.e., aerofoil profile suspended deck structure shown in Fig. 3 is in water
Under pattern and Fig. 4 aerofoil profiles suspended deck structure pattern on the water.
The structural shape can adapt to powerful Wind turbines, according to the size of Wind turbines capacity, basic ring diameter
6~10m or bigger are may be configured as, for connecting top large diameter steel pipe/tower.Foundation ring and top large diameter steel pipe/tower
Cylinder passes through flanged joint.Support leg structure is arranged in aerofoil profile cushion cap lower part, and guide frame and shear connector can be arranged in support leg, supports
Leg is inserted directly into 6 steel-pipe piles and is connected by being in the milk, and grout pipe is contemplated that on the inside of aerofoil profile cushion cap support leg when designing and welds
Grouting conduit.
The design uses aerofoil profile suspended deck structure, aerofoil profile cushion cap（Subsidiary 6 support legs, foundation rings）It can be in land overall processing
Manufacture is completed, and the quality control in manufacturing process is conducive to；And aerofoil profile cushion cap, compared with round cushion cap, material therefor is less, weight
Amount is greatly decreased, and offshore lifting equipment lifting ability is greatly reduced.
Aerofoil profile suspended deck structure under water, avoids the influence of wave force, the steel-pipe pile exposure mud face of lower part 6 is less, therefore
The cantilever segment of stake is shorter.Foundation ring top supports top tower and wind turbine, material steel using amount opposite by a large diameter steel pipe
Less, material cost is less.But it is related to underwater pile driving, underwater grouting, underwater flange connection, therefore underwater operation amount is more.
Aerofoil profile suspended deck structure is increased to the water surface or more, similar to the High-Rise Pile Cap Foundation pattern used at present, whole knot
Structure overall stiffness increases, and avoids underwater operation, convenient for construction and repair.But wave can generate cushion cap overturning effect, and
Top cushion cap makes wind area increase, and 6 steel-pipe pile length increases, cantilever segment is longer, and the moment of flexure suffered by 6 steel-pipe piles can increase
Greatly, total material therefor may increase.
In short, the foundation structure provided by the present application for the high-power unit of offshore wind farm, can be applied to the wind of large capacity
Large-diameter pile lower transition is 6 paxillas, and is connected by aerofoil profile cushion cap by motor group, avoids using large size in short supply
Pile hammer can carry out pile sinking using General Oscillation hammer or jump bit to paxilla.It is easy for construction, aerofoil profile cushion cap（Subsidiary 6 supports
Leg, foundation ring）On land, overall processing manufacture is completed, and directly at sea monoblock type is lifted and connected by being in the milk, and is greatly reduced
Potential Working Time For Operation At Sea, while can scale manufacture, construction.
The embodiment of the present application also provides a kind of installation sides of the foundation structure for the high-power unit of offshore wind farm
Method, the method includes：
The foundation structure overall processing is completed by land；
The steel-pipe pile is squeezed into using piling formula mounting means in the mud face of seabed；The piling mounting means includes using special
Die frame carries out piling construction after being positioned to pile foundation.
The foundation structure and the steel-pipe pile are installed using lifting mode；
Grouting treatment is carried out after installation is complete, and the support leg that the foundation structure includes is made to be fixedly linked with the steel-pipe pile.
Using formula installation method of first driving piles when construction, i.e., 6 steel-pipe piles are first squeezed into, then lifts top aerofoil profile cushion cap peace
Dress, post-grouting, precision of driving piles in order to control, when general piling positioned using 6 pile base of particular manufacturing craft frame pair.Support leg is hung
Annular grouting chamber is formed after dress placement with steel-pipe pile coupling part, guide plate and shear key is provided on support leg end, leads
It is used for ensureing that the when of being inserted into steel-pipe pile is easier to position to plate, and ensures support leg and the concentricity of steel-pipe pile.
6 steel-pipe piles are equipped with flange close to upper part inner wall, and for placing ring type seal, ring type seal is used for protecting
Card steel-pipe pile, support leg fit closely, and form the confined space of grouting connection.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (9)
1. a kind of foundation structure for the high-power unit of offshore wind farm, which is characterized in that including：Aerofoil profile cushion cap, the aerofoil profile
Cushion cap includes round platform portion and uniformly respectively at multiple airfoils of round platform portion side；Multiple airfoil lower part difference
It is fixedly connected with support leg；Foundation ring, the foundation ring are fixedly linked with round platform portion top；The foundation ring be used for it is big
Diameter steel cylinder or tower are connected；More steel-pipe piles, the more steel-pipe piles are connected with multiple support leg one-to-one correspondence respectively；
The steel-pipe pile with seabed mud face for being connected.
2. the foundation structure according to claim 1 for the high-power unit of offshore wind farm, which is characterized in that the basis
Ring diameter is at least 6~10 meters.
3. the foundation structure according to claim 2 for the high-power unit of offshore wind farm, which is characterized in that the basis
Ring is connected by first flange with the major diameter steel cylinder or tower.
4. the foundation structure according to claim 1 for the high-power unit of offshore wind farm, which is characterized in that the support
Leg includes guide frame and shear connector, and guide plate is used to ensure positioning when insertion steel-pipe pile, and ensures support leg and steel pipe
The concentricity of stake.
5. the foundation structure according to claim 4 for the high-power unit of offshore wind farm, which is characterized in that the support
Leg is connected using grouting way with the steel-pipe pile.
6. the foundation structure according to claim 5 for the high-power unit of offshore wind farm, which is characterized in that the steel pipe
Stake top is provided with second flange, and the second flange is for installing ring type seal.
7. the more pile type foundation knots of aerofoil profile for the high-power unit of offshore wind farm according to claim 1 to 6 any one
Structure, which is characterized in that the airfoil is six.
8. the installation method described in a kind of claim 1 to 7 any one for the foundation structure of the high-power unit of offshore wind farm,
It is characterized in that, the method includes：The foundation structure overall processing is completed by land；The steel-pipe pile is used
Piling formula mounting means is squeezed into the mud face of seabed；The foundation structure and the steel-pipe pile are installed using lifting mode；
Grouting treatment is carried out after installation is complete, and the support leg that the foundation structure includes is made to be fixedly linked with the steel-pipe pile.
9. the installation method of the foundation structure according to claim 8 for the high-power unit of offshore wind farm, feature exist
In the piling mounting means includes carrying out piling construction after being positioned to pile foundation using particular manufacturing craft frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810474080.2A CN108331007A (en) | 2018-05-17 | 2018-05-17 | A kind of foundation structure and installation method for the high-power unit of offshore wind farm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810474080.2A CN108331007A (en) | 2018-05-17 | 2018-05-17 | A kind of foundation structure and installation method for the high-power unit of offshore wind farm |
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| CN108331007A true CN108331007A (en) | 2018-07-27 |
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| CN201810474080.2A Pending CN108331007A (en) | 2018-05-17 | 2018-05-17 | A kind of foundation structure and installation method for the high-power unit of offshore wind farm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112160336A (en) * | 2020-11-13 | 2021-01-01 | 黄河勘测规划设计研究院有限公司 | Combined type anti-scour mud flat fan foundation and construction method thereof |
| CN113622453A (en) * | 2021-08-19 | 2021-11-09 | 福建省宏闽电力工程监理有限公司 | Offshore wind power bearing platform foundation construction method |
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Application publication date: 20180727 |