CN112357000A - Offshore floating type wind turbine foundation - Google Patents
Offshore floating type wind turbine foundation Download PDFInfo
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- CN112357000A CN112357000A CN202011495411.4A CN202011495411A CN112357000A CN 112357000 A CN112357000 A CN 112357000A CN 202011495411 A CN202011495411 A CN 202011495411A CN 112357000 A CN112357000 A CN 112357000A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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- Ocean & Marine Engineering (AREA)
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Abstract
The invention provides an offshore floating type fan foundation which comprises three upright posts and a heave plate, wherein the heave plate is arranged below the upright posts, the three upright posts are arranged in a regular triangle, truss structures are arranged between the adjacent upright posts and symmetrically distributed on three sides of the regular triangle, each upright post comprises a first inner layer steel plate and a first outer layer steel plate, the first inner layer steel plate and the first outer layer steel plate are both in hollow column structures, the first inner layer steel plate is arranged in a hollow column of the first outer layer steel plate, the first outer layer steel plate and the first inner layer steel plate are coaxially arranged, and one upright post is provided with an installation part for installing a wind power tower. Concrete is poured in the cavity between the first outer layer steel plate and the first inner layer steel plate, the steel consumption is reduced while the rigidity and the fatigue strength of the foundation structure are enhanced, and the cost is saved.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to an offshore floating type wind turbine foundation.
Background
With the gradual saturation of the development of wind power resources in the intertidal zone and the offshore area and the gradual increase of energy demand, offshore wind power generation is moving from the offshore area of the intertidal zone to the deep sea area. The shallow sea wind power plant is close to the coastline, is easy to influence fishery breeding, navigation channels and the like, and compared with the shallow sea wind power plant, the deep sea wind power plant has the advantages of high wind speed, low wind shear, small turbulence degree and the like, and has small influence on the sea navigation channels. Meanwhile, the resource reserve of the deep sea wind power energy source in China is in the forefront of the world, and the development prospect of the floating offshore wind power industry is wide.
At present, the research on offshore floating type wind turbines at home and abroad is still in the initial stage, and China is tightening the research on prototypes. The basic form of the offshore floating wind turbine foundation mainly comprises: single column, semi-submersible, tension leg and barge. Aiming at the use condition of the sea area in China, the semi-submersible type is a first choice basic form which is generally accepted to be suitable for the sea area in China. Therefore, many scholars have proposed three-column or four-column forms for the semi-submersible floating wind turbine foundation.
However, the semi-submersible foundation is a column-stabilized structure, the columns need to be connected through the stay bars, and in order to ensure the rigidity of the whole structure, a plurality of branch pipes need to be connected between the stay bars. The space truss structure is extremely complex, the steel consumption is increased, and meanwhile, the fatigue problem is prominent due to numerous nodes. In addition, the connecting position of the tower cylinder and the floating body upright column needs structural reinforcement due to large ultimate load and fatigue load, and the traditional reinforcement mode uses a large amount of steel.
Disclosure of Invention
In view of the above, the invention provides an offshore floating type wind turbine foundation, which can reduce steel consumption and save cost while enhancing the rigidity and fatigue strength of a foundation structure.
The invention solves the technical problems by the following technical means: the invention provides an offshore floating type fan foundation which comprises three upright posts and a heave plate, wherein the heave plate is arranged below the upright posts, the three upright posts are arranged in a regular triangle, truss structures are arranged between the adjacent upright posts and symmetrically distributed on three sides of the regular triangle, each upright post comprises a first inner steel plate and a first outer steel plate, the first inner steel plate and the first outer steel plate are both in a hollow column structure, the first inner steel plate is arranged in a hollow column of the first outer steel plate, the first outer steel plate and the first inner steel plate are coaxially arranged, concrete is poured in a cavity between the first outer steel plate and the first inner steel plate, and one of the upright posts is provided with an installation part for installing a wind power tower cylinder.
Further, the mounting part comprises a second inner layer steel plate, a perforated steel plate, a transverse steel bar and a stud, the second inner steel plate is cylindrical, the lower end of the second inner steel plate is inserted into the central hole of the upright post, the length direction of the perforated steel plates is arranged along the axial direction of the second inner layer steel plate, the perforated steel plates are provided with a plurality of perforated steel plates which are uniformly arranged between the outer wall of the second inner layer steel plate and the inner wall of the first inner layer steel plate, the transverse reinforcing steel bar is annular, the transverse reinforcing steel bar is sleeved on the outer ring of the second inner steel plate, the transverse reinforcing steel bar penetrates through the perforated steel plate, the stud is arranged between the outer wall of the second inner steel plate and the inner wall of the first inner steel plate along the radial direction of the second inner steel plate, the stud is provided with a plurality of, the cavity between the outer wall of second inlayer steel sheet and the inner wall of first inlayer steel sheet has pour the concrete.
Further, the trompil steel sheet evenly is provided with a plurality of through-holes along length direction, horizontal reinforcing bar passes the through-hole, and a plurality of pegs set one along second inlayer steel sheet axial direction parallel, and multiseriate peg align to grid sets up on second inlayer steel sheet outer wall.
Further, the stand with the installation department all sets up to hollow cylinder shape, multiseriate peg circumference array sets up on second inlayer steel sheet outer wall, and is a plurality of trompil steel sheet circumference array sets up on the outer wall of second inlayer steel sheet.
Further, a partition plate is further arranged at the bottom of the second memory steel plate and arranged on a platform inside the stand column.
Further, the trompil steel sheet is provided with two-layerly, and every layer is the even annular arrangement of polylith trompil steel sheet and forms, and wherein the one deck setting is on the inner wall of first inlayer steel sheet, and another layer sets up on the outer wall of second inlayer steel sheet, and two-layer trompil steel sheet interval sets up, all is provided with a plurality of annular transverse reinforcement along length direction on every layer of trompil steel sheet.
Further, truss structure includes that the stull is responsible for and the branch pipe, the stull is responsible for the level and sets up between two adjacent stands, is provided with the branch pipe between two adjacent stulls are responsible for in vertical direction, the branch pipe is responsible for with the stull and forms K type node or Y type node.
Further, the inside concrete that fills of stull person in charge, the branch pipe is hollow steel pipe, the branch pipe is responsible for through the circular weld with the stull and is connected.
Further, the heave plate is of a hollow sandwich concrete structure, and concrete or ballast water is filled in the hollow part of the heave plate.
According to the technical scheme, compared with the prior art, the invention has the following advantages: the invention provides an offshore floating type fan foundation which comprises three upright posts and a heave plate, wherein the heave plate is arranged below the upright posts, the three upright posts are arranged in a regular triangle, truss structures are arranged between the adjacent upright posts and symmetrically distributed on three sides of the regular triangle, each upright post comprises a first inner steel plate and a first outer steel plate, the first inner steel plate and the first outer steel plate are both in a hollow column structure, the first inner steel plate is arranged in a hollow column of the first outer steel plate, the first outer steel plate and the first inner steel plate are coaxially arranged, concrete is poured in a cavity between the first outer steel plate and the first inner steel plate, and one of the upright posts is provided with an installation part for installing a wind power tower cylinder. The steel consumption is reduced while the rigidity and the fatigue strength of the foundation structure are enhanced, and the cost is saved.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a three-dimensional structure diagram of a foundation of an offshore floating wind turbine according to the present invention;
FIG. 2 is a partial cross-sectional view of the mounting portion of the first embodiment of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a sectional view showing the position of the mounting portion according to the second embodiment of the present invention;
reference numerals:
1-upright column; 2-heave plate; 3-an installation part; 4-main cross brace pipe; 5-branch pipe; 11-a first inner layer steel plate; 12-a first outer steel sheet; 31-a second inner layer steel plate; 32-perforated steel plate; 33-transverse reinforcement; 34-pin.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
In a first embodiment, referring to fig. 1 to 3, the present invention provides an offshore floating wind turbine foundation, including a vertical column 1 and a heave plate 2, the heave plates 2 are arranged below the upright posts 1, the upright posts 1 are three, the three upright posts 1 are arranged in a regular triangle, a truss structure is arranged between the adjacent upright posts 1, the truss structures are symmetrically distributed on three sides of the regular triangle, the upright post 1 comprises a first inner layer steel plate 11 and a first outer layer steel plate 12, the first inner layer steel plate 11 and the first outer layer steel plate 12 are both in a hollow column structure, the first inner layer steel plate 11 is arranged in the hollow column of the first outer layer steel plate 12, the first outer steel plate 12 and the first inner steel plate 11 are coaxially arranged, concrete is poured into a cavity between the first outer steel plate 12 and the first inner steel plate 11, and an installation part 3 used for installing a wind power tower is arranged on one of the upright columns 1. The novel fan foundation can not only obviously enhance the rigidity and fatigue strength of the foundation structure, but also can more easily meet the mechanical property requirements of the floating fan foundation on the structure. Compared with a pure steel base structure, the steel consumption can be reduced. This novel fan basis waterline area is little, can reduce the hydrodynamic load that acts on it, has better motion performance. The upright column 1 is of a hollow sandwich steel plate concrete structure and can be composed of a cylinder or a square cylinder or other cylinders, the inside of the upright column 1 contains a plurality of cabins, and the installation part 3 is arranged on a platform on the uppermost layer of the upright column 1. The installation part 3 is arranged at the connecting position of the tower cylinder and the upright post 1, so that the strength is increased and the tower cylinder is convenient to install.
As a further improvement of the above embodiment, the mounting portion 3 includes a second inner steel plate 31, a plurality of perforated steel plates 32, a plurality of transverse steel bars 33 and a plurality of studs 34, the second inner steel plate 31 is cylindrical, the lower end of the second inner steel plate 31 is inserted into the central hole of the column 1, the length direction of the perforated steel plates 32 is arranged along the axial direction of the second inner steel plate 31, the plurality of perforated steel plates 32 are uniformly arranged between the outer wall of the second inner steel plate 31 and the inner wall of the first inner steel plate 11, the transverse steel bars 33 are annular, the transverse steel bars 33 are sleeved on the outer ring of the second inner steel plate 31, the transverse steel bars 33 penetrate through the perforated steel plates 32, the studs 34 are arranged between the outer wall of the second inner steel plate 31 and the inner wall of the first inner steel plate 11 along the radial direction of the second inner steel plate 31, the studs 34 are arranged in plurality, concrete is poured into a cavity between the outer wall of the second inner steel plate 31 and the inner wall of the first inner steel plate 11.
As a further improvement of the above embodiment, the perforated steel plate 32 is uniformly provided with a plurality of through holes along the length direction, the transverse reinforcing steel bar 33 passes through the through holes, a plurality of pegs 34 are axially arranged in parallel in a row along the second inner steel plate 31, and a plurality of rows of pegs 34 are uniformly arranged on the outer wall of the second inner steel plate 31.
As a further improvement of the above embodiment, the upright 1 and the mounting portion 3 are both provided in a hollow cylindrical shape, the plurality of rows of pegs 34 are circumferentially arrayed on the outer wall of the second inner steel plate 31, and the plurality of perforated steel plates 32 are circumferentially arrayed on the outer wall of the second inner steel plate 31. The studs 34 are arranged on the outer wall of the second inner steel plate 31, the length of the studs 34 is made to be smaller than or equal to 1 centimeter, the gap between the end of each stud 34 and the inner wall of the first inner steel plate 11 is smaller than or equal to 1 centimeter, and meanwhile, a plurality of rows of studs 34 are arranged and arranged on the outer wall of the second inner steel plate 31 in a circumferential array mode, so that the studs can bear enough load after concrete is poured and shear stress when a tower barrel shakes. Preferably, the transverse bars 33 are welded to the pegs 34.
As a further improvement of the above embodiment, the bottom of the second inner steel plate is further provided with a partition plate, and the partition plate is arranged on a platform inside the upright 1. Set up the baffle between the platform surface of installation department 3 and stand 1, increase its area of contact with the platform, prevent stress concentration, increase its intensity.
As a further improvement of the above embodiment, the truss structure includes a main cross brace pipe 4 and a branch pipe 5, the main cross brace pipe 4 is horizontally disposed between two adjacent vertical columns 1, the branch pipe 5 is disposed between two adjacent main cross brace pipes 4 in the vertical direction, and the branch pipe 5 and the main cross brace pipe 4 form a K-type node or a Y-type node. The node form is simple and easy to manufacture.
As a further improvement of the above embodiment, the main pipe 4 of the cross brace is filled with concrete, the branch pipe 5 is a hollow steel pipe, and the branch pipe 5 and the main pipe 4 of the cross brace are connected through a circular weld. The steel pipe concrete K-shaped node formed by filling concrete in the main pipe 4 of the cross brace is capable of obviously enhancing the rigidity and fatigue strength of the cross brace compared with the K-shaped node form of the hollow cross brace and the hollow branch pipe 5, and the mechanical property requirement of the floating type fan foundation on the structure can be met more easily. Under the same mechanical property, the node form of the steel pipe concrete can reduce the steel consumption, and the filled concrete can also have the function of fixing ballast, is used for reducing the gravity center of the floating type fan foundation, can reduce the ballast weight in the spaces of the upright post 1 and the heave plate 2, and saves the cost. The heave plate 2 is of a hollow sandwich concrete structure, and concrete or ballast water is filled in the hollow part of the heave plate 2.
As shown in fig. 4, in the second embodiment, the perforated steel plate 32 is provided with two layers, each layer is formed by arranging a plurality of perforated steel plates 32 uniformly and annularly, one layer is arranged on the inner wall of the first inner steel plate 11, the other layer is arranged on the outer wall of the second inner steel plate 31, the two layers of perforated steel plates 32 are arranged at intervals, and a plurality of annular transverse reinforcing bars 33 are arranged on each layer of perforated steel plate 32 along the length direction. Set up two-layer trompil steel sheet 32 and be close to first inlayer steel sheet 11 and the setting of second inlayer steel sheet 31 respectively, the width setting of trompil steel sheet 32 is at 2/3 of the difference of 11 inner wall diameters of first inlayer steel sheet and the outer diameter of second inlayer steel sheet 31, and the through-hole of seting up on the two-layer trompil steel sheet 32 sets up in turn for the transverse reinforcement 33 that sets up respectively on the two-layer trompil steel sheet 32 sets up in turn. Further enhancing the structural strength of the mounting portion 3.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (9)
1. An offshore floating wind turbine foundation, characterized in that: comprises a vertical column (1) and a heave plate (2), wherein the heave plate (2) is arranged below the vertical column (1), the three upright posts (1) are arranged, the three upright posts (1) are arranged in a regular triangle, a truss structure is arranged between the adjacent upright posts (1), the truss structures are symmetrically distributed on three sides of the regular triangle, the upright post (1) comprises a first inner layer steel plate (11) and a first outer layer steel plate (12), the first inner layer steel plate (11) and the first outer layer steel plate (12) are both in a hollow column structure, the first inner steel plate (11) is arranged in the hollow column of the first outer steel plate (12), the first outer layer steel plate (12) and the first inner layer steel plate (11) are arranged coaxially, concrete is poured in a cavity between the first outer layer steel plate (12) and the first inner layer steel plate (11), one of the upright posts (1) is provided with an installation part (3) for installing a wind power tower.
2. The offshore floating wind turbine foundation of claim 1, wherein: the installation part (3) comprises a second inner layer steel plate (31), an open pore steel plate (32), a transverse steel bar (33) and a stud (34), the second inner layer steel plate (31) is cylindrical, the lower end of the second inner layer steel plate (31) is inserted into the central hole of the stand column (1), the length direction of the open pore steel plate (32) is arranged along the axial direction of the second inner layer steel plate (31), the open pore steel plate (32) is provided with a plurality of open pore steel plates (32), the plurality of open pore steel plates (32) are uniformly arranged between the outer wall of the second inner layer steel plate (31) and the inner wall of the first inner layer steel plate (11), the transverse steel bar (33) is annular, the transverse steel bar (33) is sleeved on the outer ring of the second inner layer steel plate (31), the transverse steel bar (33) penetrates through the open pore steel plate (32), the stud (34) is arranged between the outer wall of the second inner layer steel plate (31) and the inner wall of the first inner layer steel plate (11) along the radial direction of the second inner layer steel plate, the studs (34) are arranged in a plurality, and concrete is poured in a cavity between the outer wall of the second inner-layer steel plate (31) and the inner wall of the first inner-layer steel plate (11).
3. The offshore floating wind turbine foundation of claim 2, wherein: trompil steel sheet (32) evenly are provided with a plurality of through-holes along length direction, horizontal reinforcing bar (33) pass the through-hole, and a plurality of pegs (34) set one row along second inlayer steel sheet (31) axial direction parallel, and multiseriate peg (34) align to grid sets up on second inlayer steel sheet (31) outer wall.
4. The offshore floating wind turbine foundation of claim 3, wherein: the stand (1) with installation department (3) all set up to hollow cylinder shape, multiseriate peg (34) circumference array sets up on second inlayer steel sheet (31) outer wall, and is a plurality of trompil steel sheet (32) circumference array sets up on the outer wall of second inlayer steel sheet (31).
5. The offshore floating wind turbine foundation of claim 4, wherein: the bottom of the second inner layer steel plate is also provided with a partition plate, and the partition plate is arranged on a platform inside the upright post (1).
6. The offshore floating wind turbine foundation of claim 2, wherein: trompil steel sheet (32) are provided with two-layerly, and every layer is the even annular arrangement of polylith trompil steel sheet (32) and forms, and wherein the one deck sets up on the inner wall of first inlayer steel sheet (11), and another layer sets up on the outer wall of second inlayer steel sheet (31), and two-layer trompil steel sheet (32) interval sets up, all is provided with a plurality of annular transverse reinforcement (33) along length direction on every layer of trompil steel sheet (32).
7. The offshore floating wind turbine foundation of claim 1, wherein: truss structure includes that the stull is responsible for (4) and branch pipe (5), the stull is responsible for (4) level and sets up between two adjacent stand (1), is provided with branch pipe (5) between two adjacent stull are responsible for (4) in vertical direction, branch pipe (5) are responsible for (4) with the stull and form K type node or Y type node.
8. The offshore floating wind turbine foundation of claim 7, wherein: the concrete is filled in the main pipe (4) of the cross brace, the branch pipe (5) is a hollow steel pipe, and the branch pipe (5) is connected with the main pipe (4) of the cross brace through an annular welding line.
9. The offshore floating wind turbine foundation of claim 1, wherein: the heave plate (2) is of a hollow sandwich concrete structure, and concrete or ballast water is filled in the hollow part of the heave plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011495411.4A CN112357000A (en) | 2020-12-17 | 2020-12-17 | Offshore floating type wind turbine foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011495411.4A CN112357000A (en) | 2020-12-17 | 2020-12-17 | Offshore floating type wind turbine foundation |
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| Publication Number | Publication Date |
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| CN112357000A true CN112357000A (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011495411.4A Pending CN112357000A (en) | 2020-12-17 | 2020-12-17 | Offshore floating type wind turbine foundation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112977743A (en) * | 2021-04-14 | 2021-06-18 | 哈尔滨工业大学（深圳） | Semi-submersible type fan base and floating type fan |
| CN113086116A (en) * | 2021-05-19 | 2021-07-09 | 中国船舶重工集团海装风电股份有限公司 | Floating wind power platform |
| CN113734369A (en) * | 2021-10-12 | 2021-12-03 | 重庆大学 | Semi-submersible type steel-concrete floating type fan foundation |
| CN114572356A (en) * | 2022-03-25 | 2022-06-03 | 重庆大学 | Floating type wind power foundation with steel-concrete mixed structure |
| CN115230893A (en) * | 2022-05-13 | 2022-10-25 | 重庆大学 | Floating foundation structure of steel pipe support-prestressed concrete |
-
2020
- 2020-12-17 CN CN202011495411.4A patent/CN112357000A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112977743A (en) * | 2021-04-14 | 2021-06-18 | 哈尔滨工业大学（深圳） | Semi-submersible type fan base and floating type fan |
| CN113086116A (en) * | 2021-05-19 | 2021-07-09 | 中国船舶重工集团海装风电股份有限公司 | Floating wind power platform |
| CN113734369A (en) * | 2021-10-12 | 2021-12-03 | 重庆大学 | Semi-submersible type steel-concrete floating type fan foundation |
| CN114572356A (en) * | 2022-03-25 | 2022-06-03 | 重庆大学 | Floating type wind power foundation with steel-concrete mixed structure |
| CN115230893A (en) * | 2022-05-13 | 2022-10-25 | 重庆大学 | Floating foundation structure of steel pipe support-prestressed concrete |
| CN115230893B (en) * | 2022-05-13 | 2024-02-02 | 重庆大学 | Floating foundation structure of steel pipe support-prestressed concrete |
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