CN215483071U - Fan foundation that many buckets were stood more and precast concrete cushion cap combined together - Google Patents
Fan foundation that many buckets were stood more and precast concrete cushion cap combined together Download PDFInfo
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- CN215483071U CN215483071U CN202121621207.2U CN202121621207U CN215483071U CN 215483071 U CN215483071 U CN 215483071U CN 202121621207 U CN202121621207 U CN 202121621207U CN 215483071 U CN215483071 U CN 215483071U
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Abstract
The utility model relates to a multi-bucket multi-column and precast concrete bearing platform combined fan foundation, which comprises: three or more than three suction buckets and bearing platforms which are fixed on the seabed and are arranged at intervals; the top of each suction bucket is connected with one or more inclined supporting columns; the tops of three or more than three inclined supporting columns are connected with the bearing platform; the bearing platform is connected with a foundation ring for connecting the tower barrel. The utility model is fixed by a plurality of suction buckets, and the construction of pumping water, pumping air and sinking is carried out, compared with the traditional driving-in type pile foundation, the utility model has less input construction equipment and short period; the main body connecting member adopts a plurality of inclined supporting columns, and compared with a single-upright-column form, the stress is more uniform; the upper tower drum structure is connected by adopting the foundation ring and the precast concrete bearing platform structure, so that the overall rigidity and the uplift bearing capacity of the foundation are improved, the cost can be effectively reduced, the offshore construction procedures are reduced, and the construction period is shortened.
Description
Technical Field
The utility model relates to the technical field of offshore power generation, in particular to a multi-bucket multi-column wind turbine foundation combined with a precast concrete bearing platform.
Background
The development of offshore wind power has great potential, plays an important role in a future energy system, and has two major development trends at present. Firstly, price is balanced, and price can be profitable through cost reduction, efficiency improvement and technical development; and the development from shallow sea to deep open sea. The manufacturing cost of the offshore wind turbine foundation accounts for about 20-30% of the total cost of the wind power plant, and the cost input of the foundation can be increased along with the increase of the water depth.
At present, a plurality of foundation forms adopted in China comprise a large-diameter single-pile foundation, a high-pile cap foundation and a jacket foundation. The most widely applied foundation form in China is a single-pile foundation which is mostly used in shallow sea areas with water depth within 35 m. Secondly, the high-pile bearing platform foundation is developed from common foundation structures of a coastal wharf and a pier as an offshore wind turbine foundation form, requirements on multiple ships and equipment are low, but the offshore construction operation time is long, the piling workload is large, and the offshore wind turbine foundation is mostly used in a shallow sea area with the water depth within 30 m. The deep water sea area mostly adopts a pile foundation jacket foundation or a suction bucket jacket foundation, the upper connecting structure adopts a truss jacket structure, and the truss jacket has the advantages of complex structural form, more pipe joints, large welding workload and long manufacturing period.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to solve the problems in the prior art, the utility model provides a fan foundation combining a plurality of barrels and a plurality of stand columns with a precast concrete bearing platform, which is used in a deep sea area, and has the advantages of simple structure and convenience in installation.
(II) technical scheme
In order to achieve the purpose, the utility model adopts the main technical scheme that:
the utility model provides a fan basis that many buckets of stands and precast concrete cushion cap combined together, it includes: three or more than three suction buckets and bearing platforms which are fixed on the seabed and are arranged at intervals; the top of each suction bucket is connected with one or more inclined supporting columns; the tops of three or more than three inclined supporting columns are connected with the bearing platform; the bearing platform is connected with a foundation ring for connecting the tower barrel.
Further, the top of each suction bucket is connected with one or more oblique supporting columns through a bucket top transition structure.
Further, the bucket top transition structure comprises a central connecting column connected to the suction bucket, the circumference of the central connecting column is connected with a plurality of main beam central plates in an annular array mode, a reinforcing ring plate is connected between every two adjacent main beam central plates, and the top of the central connecting column is connected with a diamond top plate; the bottom of the oblique supporting columns is welded on the diamond top plate, when the number of the oblique supporting columns on one suction bucket is two, the two oblique supporting columns are separated towards two sides along with the height of the oblique supporting columns inclining inwards, and the tops of all the oblique supporting columns are uniformly arranged along the circumference of the bearing platform in a certain diameter.
Furthermore, the tops of the oblique supporting columns are adjacent to each other and connected through a horizontal cross brace.
Further, the top of the center plate of the main beam is connected with a cover plate.
Furthermore, the suction bucket comprises staving and suction bucket top cap, the top cap of suction bucket is connected in the top of staving, forms the back-off formula bucket type structure.
Furthermore, the bearing platform is of a prefabricated reinforced concrete bearing platform structure, the lower portion of the bearing platform is of a large-diameter cylindrical structure, and the upper portion of the bearing platform is of a circular truncated cone structure.
Furthermore, the foundation ring is of a large-diameter circular steel pipe structure, and a foundation ring base ring plate is arranged at the lower part of the foundation ring; the upper part of the foundation ring is provided with a foundation top flange.
(III) advantageous effects
The utility model has the beneficial effects that: the suction buckets are fixed, water pumping, air pumping and sinking construction are performed, compared with the traditional driving type pile foundation, the driving type pile foundation has the advantages of less input construction equipment and short period; the main body connecting member adopts a plurality of inclined supporting columns, and compared with a single-upright-column form, the stress is more uniform; compared with the traditional truss type jacket structure, the jacket structure is simple in structural form, few in pipe joint, capable of greatly reducing welding workload in the manufacturing process and reducing stress concentration and fatigue risk of the joint. The upper tower drum structure is connected by adopting the foundation ring and the precast concrete bearing platform structure, so that the overall rigidity and the uplift bearing capacity of the foundation are improved, the cost can be effectively reduced, the offshore construction procedures are reduced, and the construction period is shortened.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
FIG. 2 is a front view of the structure of one embodiment of the present invention;
FIG. 3 is a top view of a structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a suction bucket configuration according to one embodiment of the present invention;
FIG. 5 is a top view of a suction bucket structure according to one embodiment of the present invention;
FIG. 6 is a schematic diagram of a basic ring structure according to an embodiment of the present invention;
fig. 7 is a top view of a foundation ring structure according to one embodiment of the present invention.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
A wind turbine foundation combining a plurality of barrels and a plurality of columns with a precast concrete cap according to an embodiment of the present invention, as shown in fig. 1 to 7, includes: three or more than three suction buckets 1 and bearing platforms 12 which are fixed on the seabed and are arranged at intervals; the top of each suction bucket 1 is connected with one or more inclined supporting columns 10 through a bucket top transition structure 4; the tops of three or more than three oblique supporting columns 10 are connected with a bearing platform 12; the top of the inclined supporting column 10 is inserted into a bearing platform 12 of prefabricated reinforced concrete; a foundation ring 13 for tower connection is connected to the bearing platform 12.
Specifically, suction bucket 1 comprises staving 2 and suction bucket top cap 3, suction bucket top cap 3 is connected in the top of staving 2, forms the back-off formula bucket type structure, and basic parameters such as the distribution quantity, diameter, the degree of depth and wall thickness of suction bucket 1 are confirmed according to marine environment load.
Further, the bucket top transition structure 4 mainly plays a role in transiting and connecting the suction bucket 1 and the inclined supporting column 10; the bucket top transition structure 4 comprises a central connecting column 5 connected to the suction bucket 1, the circumference of the central connecting column 5 is connected with a plurality of main beam central plates 7 in an annular array mode, a reinforcing ring plate 9 is connected between every two adjacent main beam central plates 7, the top of each main beam central plate 7 is connected with a cover plate 8, and the top of the central connecting column 5 is connected with a diamond top plate 6; the bottoms of the oblique supporting columns 10 are welded on the diamond top plate 6, when two oblique supporting columns 10 are arranged on one suction bucket 1, the two oblique supporting columns 10 are separated towards two sides while inclining inwards along with the height, the tops of all the oblique supporting columns 10 are uniformly arranged along the circumference of the bearing platform 12 with a certain diameter, and meanwhile, the tops of the oblique supporting columns 10 are connected with each other through the horizontal cross brace 11 to enhance the overall rigidity of the oblique supporting columns.
Further, the bearing platform 12 is a prefabricated reinforced concrete bearing platform structure, the lower part of the bearing platform is a large-diameter cylindrical structure, and the upper part of the bearing platform is a circular truncated cone structure; the bearing platform 12 plays a role in connecting the inclined supporting column 10 and the foundation ring 13, and meanwhile, the balance weight of the foundation can be increased, so that the overall anti-overturning capacity of the foundation is improved; reinforcing bars and water stopping measures are needed for the concrete bearing connection position so as to ensure effective connection.
Further, the foundation ring 13 is a large-diameter circular steel pipe structure, the diameter of the foundation ring is consistent with that of the upper tower, and a foundation ring base ring plate 14 is arranged at the lower part of the foundation ring 13, so that the connection strength between the foundation ring 13 and the bearing platform 12 can be enhanced; the upper part of the foundation ring 13 is provided with a foundation top flange 15 for connection to the tower.
The installation process of this embodiment is as follows: the foundation is integrally prefabricated in a land prefabricated field, and the integral prefabrication comprises prefabrication of a suction bucket, an inclined supporting column, a bearing platform and a foundation ring structure, and installation of auxiliary components such as ladder collision prevention and the like; constructing a foundation structure, sinking under the action of the self-weight of the foundation in the initial stage, and connecting a pump valve system through a reserved drain hole to perform negative pressure penetration leveling after balancing; the upper fan tower cylinder is connected with the foundation through a transition section.
In the embodiment, the suction buckets are used for fixing, water pumping and air pumping sinking construction are carried out, compared with the traditional driving-in type pile foundation, the driving-in type pile foundation has the advantages of less input construction equipment and short period; the main body connecting member adopts a plurality of inclined supporting columns, and compared with a single-upright-column form, the stress is more uniform; compared with the traditional truss type jacket structure, the jacket structure has simple structural form and few pipe joints, can greatly reduce the welding workload in the manufacturing process, and simultaneously reduces the stress concentration and fatigue risk of the joints; the upper tower drum structure is connected by adopting the foundation ring and the precast concrete bearing platform structure, so that the overall rigidity and the uplift bearing capacity of the foundation are improved, the cost can be effectively reduced, the offshore construction procedures are reduced, and the construction period is shortened.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (8)
1. The utility model provides a fan basis that many buckets of stands and precast concrete cushion cap combined together which characterized in that, it includes: three or more than three suction buckets (1) and bearing platforms (12) which are fixed on the seabed and are arranged at intervals; the top of each suction bucket (1) is connected with one or more inclined supporting columns (10); the tops of three or more than three oblique supporting columns (10) are connected with a bearing platform (12); the bearing platform (12) is connected with a foundation ring (13) for connecting a tower.
2. The wind turbine foundation combining the multi-barrel multi-upright post and the precast concrete bearing platform as recited in claim 1, wherein: the top of each suction bucket (1) is connected with one or more inclined supporting columns (10) through a bucket top transition structure (4).
3. The wind turbine foundation combining the multi-barrel multi-column and the precast concrete cap as recited in claim 2, wherein: the bucket top transition structure (4) comprises a central connecting column (5) connected to the suction bucket (1), the circumference of the central connecting column (5) is connected with a plurality of main beam central plates (7) in an annular array mode, a reinforcing ring plate (9) is connected between every two adjacent main beam central plates (7), and the top of the central connecting column (5) is connected with a diamond top plate (6); the bottoms of the oblique supporting columns (10) are welded on the diamond top plate (6), when two oblique supporting columns (10) are arranged on one suction barrel (1), the two oblique supporting columns (10) are separated towards two sides along with the inward inclination of the height, and the tops of all the oblique supporting columns (10) are uniformly arranged along the circumference of the bearing platform (12) with a certain diameter.
4. The wind turbine foundation combining the multi-barrel multi-upright post and the precast concrete bearing platform as recited in claim 1, wherein: the tops of the inclined supporting columns (10) are adjacent to each other and connected through a horizontal cross brace (11).
5. The wind turbine foundation combining the multi-barrel multi-column and the precast concrete cap as recited in claim 3, wherein: the top of the girder central plate (7) is connected with a cover plate (8).
6. The wind turbine foundation combining the multi-barrel multi-upright post and the precast concrete bearing platform as recited in claim 1, wherein: the suction bucket (1) comprises a bucket body (2) and a suction bucket top cover (3), and the suction bucket top cover (3) is connected to the top of the bucket body (2) to form a reversely buckled bucket type structure.
7. The wind turbine foundation combining the multi-barrel multi-upright post and the precast concrete bearing platform as recited in claim 1, wherein: the bearing platform (12) is of a prefabricated reinforced concrete bearing platform structure, the lower part of the bearing platform is of a large-diameter cylindrical structure, and the upper part of the bearing platform is of a circular truncated cone structure.
8. The wind turbine foundation combining the multi-barrel multi-upright post and the precast concrete bearing platform as recited in claim 1, wherein: the foundation ring (13) is of a large-diameter circular steel pipe structure, and a foundation ring base ring plate (14) is arranged at the lower part of the foundation ring (13); the upper part of the foundation ring (13) is provided with a foundation top flange (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121621207.2U CN215483071U (en) | 2021-07-16 | 2021-07-16 | Fan foundation that many buckets were stood more and precast concrete cushion cap combined together |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121621207.2U CN215483071U (en) | 2021-07-16 | 2021-07-16 | Fan foundation that many buckets were stood more and precast concrete cushion cap combined together |
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| CN215483071U true CN215483071U (en) | 2022-01-11 |
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| CN202121621207.2U Active CN215483071U (en) | 2021-07-16 | 2021-07-16 | Fan foundation that many buckets were stood more and precast concrete cushion cap combined together |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417312A (en) * | 2021-07-16 | 2021-09-21 | 中国电建集团华东勘测设计研究院有限公司 | Fan foundation that many buckets were stood more and precast concrete cushion cap combined together |
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2021
- 2021-07-16 CN CN202121621207.2U patent/CN215483071U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417312A (en) * | 2021-07-16 | 2021-09-21 | 中国电建集团华东勘测设计研究院有限公司 | Fan foundation that many buckets were stood more and precast concrete cushion cap combined together |
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