CN114150711A - Offshore wind turbine foundation anti-scouring protection structure and construction method - Google Patents
Offshore wind turbine foundation anti-scouring protection structure and construction method Download PDFInfo
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- CN114150711A CN114150711A CN202111510730.2A CN202111510730A CN114150711A CN 114150711 A CN114150711 A CN 114150711A CN 202111510730 A CN202111510730 A CN 202111510730A CN 114150711 A CN114150711 A CN 114150711A
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- protection
- wind turbine
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- offshore wind
- protection structure
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- 238000009991 scouring Methods 0.000 title claims abstract description 23
- 238000010276 construction Methods 0.000 title claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims description 8
- 230000003628 erosive effect Effects 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 239000002689 soil Substances 0.000 abstract description 6
- 238000010248 power generation Methods 0.000 abstract description 3
- 239000004567 concrete Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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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
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- 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
-
- 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
- E02D27/44—Foundations for machines, engines or ordnance
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
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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)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Foundations (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to the technical field of wind power generation, in particular to an anti-scouring protection structure for an offshore wind turbine foundation and a construction method, wherein the protection structure comprises a wind turbine steel pipe pile foundation and a protection structure body arranged at the bottom of the wind turbine steel pipe pile foundation, the protection structure body comprises a plurality of protection bodies, each protection body comprises a protection internal supporting structure and a protection surface, the protection surfaces are arranged in a curved surface manner, and the protection surfaces are of reinforced concrete structures; the protective surface is provided with a film bag. The anti-scouring protection structure for the offshore wind turbine foundation protects the soil around the wind turbine steel pipe pile foundation, does not disturb the soil around the wind turbine steel pipe pile foundation, and ensures the safety of foundation design. And according to the water flow form, a protection surface curve is reasonably arranged, various scouring damages caused by water flow circumfluence are avoided, the protection surface is of a reinforced concrete structure, and the durability is ensured.
Description
Technical Field
The invention relates to the field of wind power generation technology, in particular to an anti-scouring protection structure of an offshore wind turbine foundation and a construction method.
Background
Wind power generation is clean energy, has the characteristics of environmental protection and regeneration, plays a significant role in the field of national energy, and enters a larger-scale development and construction period along with the promotion of national environmental protection policies and the increase of carbon dioxide emission reduction. The area with large wind speed firstly has the condition of flat price on-line, but the foundation cost, the construction difficulty and the construction period of the offshore wind turbine all have important influence on the economy of the project, and the loss is achieved for the project near the balance point, even the loss is caused by the cost and the construction period of the foundation construction.
The erosion prevention of the single-pile foundation of the offshore wind turbine is always important in the design of the foundation of the offshore wind turbine and is also a hotspot and a difficult point of research, the erosion has great influence on the safety of the foundation, various erosion prevention schemes have certain limitations at present, and the durability of the erosion is not checked.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an anti-scouring protection structure for an offshore wind turbine foundation and a construction method.
The invention is realized by the following technical scheme:
an anti-scouring protection structure for an offshore wind turbine foundation comprises a wind turbine steel pipe pile foundation and a protection structure body arranged at the bottom of the wind turbine steel pipe pile foundation, wherein the protection structure body comprises a plurality of protection bodies, each protection body comprises a protection internal supporting structure and a protection surface, the protection surfaces are arranged in a curved surface mode, and the protection surfaces are of reinforced concrete structures; the protective surface is provided with a film bag.
Preferably, adjacent protective bodies are in snap connection through reserved longitudinal shear pieces.
Preferably, be equipped with a plurality of bases on the fan steel pipe pile basis and reserve the mounting groove, be equipped with the hoop that is connected with the base reservation mounting groove on the protective body and hang the knot.
Preferably, the foundation reserved mounting grooves are uniformly formed in the outer side of the fan steel pipe pile foundation and are at least four.
Preferably, the protective surface is arranged in a multi-segment line on a vertical section, and the multi-segment line comprises a parabola, a hyperbola and a straight line.
Preferably, a longitudinal slit is left between the adjacent protective bodies, and the film bag is positioned at the longitudinal slit.
Preferably, a steel reinforcement cage is arranged inside the membrane bag.
Preferably, the protective internal support structure is a truss structure.
Preferably, a bottom upright column is arranged below the protective structure body and is used for being connected with a seabed mud surface.
Preferably, the diameter of the bottom upright post is more than 500mm, and the length of the bottom upright post is more than or equal to 3 m.
A construction method of an anti-scouring protection structure of an offshore wind turbine foundation comprises the following steps:
1) firstly, mounting a fan steel pipe pile foundation and a plurality of protection bodies;
2) and laying a film bag on the protective surface.
Compared with the prior art, the invention has the following beneficial effects:
the anti-scouring protection structure for the offshore wind turbine foundation protects the soil around the wind turbine steel pipe pile foundation, does not disturb the soil around the wind turbine steel pipe pile foundation, and ensures the safety of foundation design. And according to the water flow form, a protection surface curve is reasonably arranged, various scouring damages caused by water flow circumfluence are avoided, the protection surface is of a reinforced concrete structure, and the durability is ensured.
Furthermore, the protective surface is arranged in a multi-section line form, so that the complex situation generated by factors such as water flow streaming, turbulence and the like can be solved.
Furthermore, the protective bodies connected in an occlusion mode are convenient to replace protective body structures, reserved longitudinal shearing resistant pieces are arranged between the protective bodies, the reserved longitudinal shearing resistant pieces can play a role in locking, and water flow horizontal force and overall stress can be resisted.
Furthermore, compared with a common anti-scouring structure, the anti-scouring structure can be constructed immediately after pile foundation construction is finished, the construction period is short, and the manufacturing cost is lower by more than 10% compared with that of the common anti-scouring structure.
Drawings
FIG. 1 is a front view of an anti-erosion protection structure for a foundation of an offshore wind turbine according to the present invention;
FIG. 2 is a schematic view of a protection body in an anti-scour protection structure of an offshore wind turbine foundation according to the present invention;
FIG. 3 is a side view of a protection body in an anti-scour protection structure for an offshore wind turbine foundation according to the present invention;
FIG. 4 is a side view of a protection surface in an anti-erosion protection structure for an offshore wind turbine foundation according to the present invention;
FIG. 5 is a front view of a longitudinal shear member reserved in the anti-scour protection structure of the offshore wind turbine foundation according to the present invention;
FIG. 6 is a top view of a longitudinal shear member reserved in the anti-scour protection structure of the offshore wind turbine foundation according to the present invention.
In the figure, 1, a steel pipe pile foundation of a fan; 2. a protective structure; 3. a protective surface; 3-1, a first straight line segment; 3-2, a first parabola; 3-3, a second straight line segment; 3-4, a second parabola; 3-5, a third straight line segment; 4. shielding the internal support structure; 5. a foundation reserved mounting groove; 6. a bottom column; 7. reserving a longitudinal shear resistant part; 8. film bag; 9. and (5) hanging and buckling in a ring shape.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The invention discloses an anti-scouring protection structure for an offshore wind turbine foundation, which comprises a wind turbine steel pipe pile foundation 1 and a protection structure body 2 arranged at the bottom of the wind turbine steel pipe pile foundation 1, wherein the protection structure body 2 comprises a plurality of protection bodies, and the protection structure body 2 comprises eight protection bodies in the embodiment, according to the figure 1.
Referring to fig. 2 and 3, the protection body comprises a protection internal supporting structure 4 and a protection surface 3, the protection internal supporting structure 4 is of a truss structure and is subjected to anti-corrosion treatment, so that the protection internal supporting structure meets the service life condition, and the protection internal supporting structure 4 can be of a steel structure or a reinforced concrete frame.
Referring to fig. 1, fan steel pipe pile foundation 1 outside evenly sets up and is equipped with a plurality of bases and reserves mounting groove 5, and the base is reserved mounting groove 5 and is provided with four at least, and the base is reserved mounting groove 5 in this embodiment and is provided with four, and this is in order to guarantee that whole system is balanced.
Referring to fig. 3, the protective body is provided with a circumferential hanging buckle 9 connected with the foundation reservation mounting groove 5.
Referring to fig. 2 and 4, the protection surface 3 is a curved surface. The protective surface 3 is arranged in a multi-segment line mode on a vertical section, the multi-segment line mode comprises a parabola, a hyperbola and a straight line, and the protective surface 3 in the multi-segment line mode can solve the complex situation caused by factors such as water flow streaming and turbulence. In the embodiment, the multi-segment line of the protective surface 3 is sequentially a first straight line segment 3-1, a first parabola 3-2, a second straight line segment 3-3, a second parabola 3-4 and a third straight line segment 3-5 from top to bottom.
Referring to fig. 1, the protection surface 3 is provided with film bags 8, a longitudinal gap is reserved between adjacent protection bodies, and the film bags 8 are positioned at the longitudinal gap.
The membrane bag 8 is a concrete membrane bag 8, because the concrete membrane bag 8 has hydraulicity, the strength of the whole structure can be ensured. The inside steel reinforcement cage that is provided with of membrane bag 8 for the membrane bag can be inseparable with the laminating of protection face 3, and the weight is great.
The protective face 3 is of a reinforced concrete structure, in the embodiment, the protective face 3 is made of fair-faced concrete, the surface is smooth, and the strength is greater than or equal to C40.
Referring to fig. 5 and 6, adjacent protective bodies are in snap connection through reserved longitudinal shear pieces 7. In the embodiment, the reserved longitudinal shear-resistant part 7 is parallel to the plane of the longitudinal gap, and the reserved longitudinal shear-resistant part 7 can play a role in locking.
Referring to fig. 3, a bottom upright 6 is arranged below the protective structure 2, and the bottom upright 6 is used for being connected with a seabed mud surface. The diameter of the bottom upright post 6 is more than 500mm, and the length is more than or equal to 3 m. PHC tubular pile is selected to bottom stand 6 in this embodiment to in advance with protect inside bearing structure 4 welding, the diameter is 550mm, and length selects 3m according to the geology condition.
The invention relates to a construction method of an anti-scouring protection structure of an offshore wind turbine foundation, which comprises the following steps:
firstly, mounting a fan steel pipe pile foundation 1 and a protective structure body 2;
1) firstly, welding a foundation reserved mounting groove 5 at a proper position of a fan steel pipe pile foundation 1, then hoisting a prefabricated protective body to the side face of the fan steel pipe pile foundation 1, then constructing in sequence, and forming the protective body 2 into a whole to form a protective structure body 2.
2) The film bag 8 is laid on the surface of the protective structure.
The anti-scouring protection structure for the offshore wind turbine foundation protects the soil around the wind turbine steel pipe pile foundation 1, does not disturb the soil around the wind turbine steel pipe pile foundation 1, and ensures the safety of foundation design. And according to the water flow form, the curve of the protective surface 3 is reasonably arranged, various scouring damages caused by water flow circumfluence are avoided, the protective surface 3 is of a reinforced concrete structure, and the durability is ensured.
Claims (10)
1. An anti-scouring protection structure for an offshore wind turbine foundation is characterized by comprising a wind turbine steel pipe pile foundation (1) and a protection structure body (2) arranged at the bottom of the wind turbine steel pipe pile foundation (1), wherein the protection structure body (2) comprises a plurality of protection bodies, each protection body comprises a protection internal supporting structure (4) and a protection surface (3), each protection surface (3) is arranged in a curved surface manner, and each protection surface (3) is of a reinforced concrete structure; the protective face (3) is provided with a film bag (8).
2. Offshore wind turbine foundation anti-scour protection structure according to claim 1, wherein adjacent protection bodies are connected in a snap-fit manner by means of a reserved longitudinal shear member (7).
3. The offshore wind turbine foundation anti-scouring protection structure according to claim 1, wherein a plurality of foundation reserved mounting grooves (5) are formed in the wind turbine steel pipe pile foundation (1), and the protection body is provided with a hoop hanging buckle (9) connected with the foundation reserved mounting grooves (5).
4. Offshore wind turbine foundation erosion protection structure according to claim 3, wherein the foundation reservation mounting grooves (5) are evenly arranged on the outer side of the wind turbine steel pipe pile foundation (1) and are at least four.
5. Offshore wind turbine foundation erosion protection structure according to claim 1, characterized in that the protection surface (3) is arranged in vertical section in multiple segments, the multiple segments comprising parabolas, hyperbolas and straight lines.
6. An anti-scouring protection structure for an offshore wind turbine foundation according to claim 1, wherein a longitudinal gap is reserved between adjacent protection bodies, and the membrane bag (8) is positioned at the longitudinal gap; and a steel reinforcement cage is arranged in the membrane bag (8).
7. Offshore wind turbine foundation scour prevention and protection structure according to claim 1, wherein the protective internal support structure (4) is of a truss structure.
8. An anti-scouring protection structure for an offshore wind turbine foundation according to claim 1, wherein a bottom upright (6) is arranged below the protection structure body (2), and the bottom upright (6) is used for being connected with a seabed mud surface.
9. Offshore wind turbine foundation scour protection according to claim 8, wherein the diameter of the bottom upright (6) is larger than 500mm, and the length of the bottom upright (6) is larger than or equal to 3 m.
10. A construction method of an anti-scouring protection structure of an offshore wind turbine foundation is characterized by comprising the following steps:
1) firstly, mounting a fan steel pipe pile foundation (1) and a plurality of protection bodies;
2) the protective surface (3) is coated with a film bag (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111510730.2A CN114150711A (en) | 2021-12-10 | 2021-12-10 | Offshore wind turbine foundation anti-scouring protection structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111510730.2A CN114150711A (en) | 2021-12-10 | 2021-12-10 | Offshore wind turbine foundation anti-scouring protection structure and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114150711A true CN114150711A (en) | 2022-03-08 |
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ID=80450704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111510730.2A Pending CN114150711A (en) | 2021-12-10 | 2021-12-10 | Offshore wind turbine foundation anti-scouring protection structure and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114150711A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160288A (en) * | 2020-07-31 | 2021-01-01 | 浙江大学 | Pier local scouring protection device with rotating normal curved surface |
| CN112523266A (en) * | 2020-12-18 | 2021-03-19 | 天津水运工程勘察设计院 | Fabricated offshore wind power foundation anti-scouring energy dissipation structure and installation method thereof |
-
2021
- 2021-12-10 CN CN202111510730.2A patent/CN114150711A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160288A (en) * | 2020-07-31 | 2021-01-01 | 浙江大学 | Pier local scouring protection device with rotating normal curved surface |
| CN112523266A (en) * | 2020-12-18 | 2021-03-19 | 天津水运工程勘察设计院 | Fabricated offshore wind power foundation anti-scouring energy dissipation structure and installation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Deng Mingji Inventor after: Tan Guangdao Inventor after: Xu Chao Inventor after: Meng Xiujun Inventor after: Wang Dejun Inventor after: Xu Hongfei Inventor after: Zhu Yurui Inventor after: Hu Hui Inventor before: Deng Mingji Inventor before: Tan Daoguang Inventor before: Xu Chao Inventor before: Meng Xiujun Inventor before: Wang Dejun Inventor before: Xu Hongfei Inventor before: Zhu Yurui Inventor before: Hu Hui |
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Application publication date: 20220308 |
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| RJ01 | Rejection of invention patent application after publication |