CN116039861A - Floating foundation supported by steel-concrete combined multiple upright posts - Google Patents
Floating foundation supported by steel-concrete combined multiple upright posts Download PDFInfo
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- CN116039861A CN116039861A CN202310197190.XA CN202310197190A CN116039861A CN 116039861 A CN116039861 A CN 116039861A CN 202310197190 A CN202310197190 A CN 202310197190A CN 116039861 A CN116039861 A CN 116039861A
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- steel plate
- steel
- upright post
- floating foundation
- columns
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- 239000004567 concrete Substances 0.000 title claims abstract description 24
- 238000007667 floating Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 70
- 239000010959 steel Substances 0.000 claims abstract description 70
- 230000007704 transition Effects 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 239000011150 reinforced concrete Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Classifications
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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
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
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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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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ocean & Marine Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- General Engineering & Computer Science (AREA)
- Foundations (AREA)
Abstract
The invention discloses a steel-concrete combined multi-column supported floating foundation which consists of columns, horizontally connected steel pipes, transition sections, anchor chains and anchors, wherein 3-4 columns are uniformly distributed around the transition sections, and the columns are connected with each other through two horizontally connected steel pipes which are parallel to each other; the transition section is a round conical steel pipe with a large upper diameter and a small lower diameter; the upper part of the transition section can be connected with a fan tower through a flange; the upright post, the transition section and the horizontal connecting steel pipe are connected into a whole in a welding mode; one end of the anchor chain is connected with the top of each upright post, and the other end is connected with an anchor on the seabed, so that the whole floating foundation platform is limited to a designated area.
Description
Technical Field
The invention relates to the technical field of offshore wind power foundation structures, in particular to a steel-concrete combined multi-column supported floating foundation.
Background
The necessity of developing new energy has been well recognized in the past decades. The wind power energy is paid attention to as other clean renewable energy sources, the wind power generation is rapidly increased under the support of various national governments, the development technology is mature day by day, the commercialization degree is high, and the wind power generation system is one of the new energy sources which are most suitable for large-scale development.
With the increase of the water depth, the design difficulty and the investment cost of the support foundation of the offshore fixed type fan are increased sharply, and the advantages of the floating type fan are highlighted gradually. The offshore floating fan can be regarded as the combination of a floating platform and a wind driven generator, and the platform is used as a support to control the position and the posture of the fan, so that the capture of energy is ensured.
The traditional floating structure mainly consists of a steel structure, and the material cost is high. With the implementation of wind power low-price internet surfing in China, higher requirements are put forward on the manufacturing cost of wind power engineering.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a floating foundation supported by a steel-concrete combined multi-column, so that the steel consumption of a foundation structure is reduced, and the overall manufacturing cost is reduced.
The invention aims at realizing the following technical scheme:
the steel-concrete combined multi-column supported floating foundation consists of 3-4 columns, two horizontal connecting steel pipes, a transition section, an anchor chain and anchors, wherein the columns are uniformly distributed around the transition section, and the columns are connected with the transition section and the adjacent columns through the two horizontal connecting steel pipes which are parallel to each other;
the transition section is a round conical steel pipe with a large upper diameter and a small lower diameter; the upper part of the transition section can be connected with a fan tower through a flange;
the upright post, the transition section and the horizontal connecting steel pipe are connected into a whole in a welding mode;
one end of the anchor chain is connected with the top of each upright post, and the other end of the anchor chain is connected with an anchor on the seabed, so that the whole floating foundation platform is limited in a designated area;
the upright post is of a dumbbell-shaped structure with a small middle diameter and large diameters at two ends, and comprises an inner steel plate, an outer steel plate and a cabin-dividing steel plate, concrete is filled between the inner steel plate and the outer steel plate, and a plurality of cabin-dividing steel plates are arranged on the inner steel plate wall inside the upright post from top to bottom; the top and the bottom of the upright post are fixedly connected with a top steel plate and a bottom steel plate respectively to realize the sealing of the inner steel plate, the outer steel plate and the inside of the upright post.
Further, the outer diameter of the middle part of the upright post is 8-12 m, the outer diameters of the two ends are 13-17 m, and the thicknesses of the inner steel plate and the outer steel plate are 8-12 mm.
Further, the wall thickness of the concrete is 320-380 mm; the thicknesses of the cabin-dividing steel plate, the top steel plate and the bottom steel plate are 18-22 mm.
Further, the center distance between adjacent upright posts is 38-42 m.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
compared with the traditional upright post structure, the invention has the advantages that the middle part of the dumbbell-shaped upright post is arranged near the waterline, so that the acting force of waves can be reduced; the lower part of the dumbbell-shaped upright post is an enlarged end, so that the additional mass of hydraulic power can be increased, and the heave of the whole structure can be reduced; the upper part of the dumbbell-shaped upright post is gradually enlarged, and when the foundation is inclined like water, the restoring force can be gradually increased, so that the stability of the foundation is facilitated; the whole structure adopts a steel-concrete combined structure, so that the steel consumption of the whole structure can be reduced.
In addition, the floating foundation design provided by the invention can provide increased column top bearing capacity; reducing the change restriction coefficient of the water level: the support structure is added, and the support force of the column top is increased; the safety risk is reduced: the bearing structure can be fully utilized by adopting concrete supports among the steel-concrete combined multiple upright posts.
Drawings
FIG. 1 is a schematic view of the overall structure of a floating foundation according to the present invention.
Fig. 2 is a schematic cross-sectional view of a dumbbell-shaped column.
Reference numerals: 1-upright post, 101-concrete, 102-inner steel plate, 103-outer steel plate, 104-cabin steel plate, 105-top steel plate, 106-bottom steel plate, 2-horizontal connection steel pipe, 3-anchor chain, 4-anchor and 5-transition section
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, the embodiment provides a steel-concrete combined multi-column supported floating foundation, which comprises columns 1, horizontally connected steel pipes 2, anchor chains 3, anchors 4 and transition sections 5.
In the embodiment, the vertical column 1 is of a steel-concrete combined cavity structure, the outer diameter of the middle is 10m, and the outer diameters of the two ends are 15m; the side wall is a double-steel-plate concrete structure consisting of an inner steel plate 102 and an outer steel plate 103, the middle is a concrete 101, the thickness of the inner steel plate 102 and the outer steel plate 103 is 10mm, the local connection part is thickened to 25mm, and the wall thickness of the middle concrete 101 is 350mm; a steel plate 104 for cabin is arranged in the steel plate, the top is a top steel plate 105, the bottom is a bottom steel plate 106, and the thickness of all the steel plates in the embodiment is 20mm; the dumbbell type upright posts 1 are arranged in 4, are uniformly arranged outside the whole structure, and the center distance between every two adjacent upright posts 1 is 40m.
The transition section 5 is a round conical steel pipe with the upper outer diameter of 10m and the lower outer diameter of 3 m; the upper part can be connected with the fan tower through a flange.
The upright post 1, the transition section 5 and the horizontal connection steel pipe 2 are connected into a whole in a welding mode. Wherein the upright column 1 can be regarded as a large-diameter cylindrical barrel, an inverted trapezoid barrel, a small-diameter cylindrical barrel, a trapezoid cylindrical barrel and a large-diameter cylindrical barrel which are sequentially arranged from top to bottom and are sequentially connected into a whole. Since the hollow space formed between the inner steel plate 102 and the outer steel plate 103 of the column 1 is integral, the entire concrete 101 is also formed into a dumbbell like the column 1.
One end of the anchor chain 3 is connected with the top of each upright 1, and the other end is connected with an anchor 4 on the seabed, so that the whole foundation platform is limited to a designated area.
Compared with the traditional upright post structure, the invention has the advantages that the middle part of the dumbbell-shaped upright post 1 near the waterline can reduce the acting force of waves; the lower part of the dumbbell-shaped upright post 1 is an enlarged end, so that the additional mass of hydraulic power can be increased, and the heave of the whole structure can be reduced; the upper part of the dumbbell-shaped upright post 1 is gradually enlarged, and when the foundation is inclined like water, the restoring force can be gradually increased, so that the stability of the foundation is facilitated; the whole structure adopts a steel-concrete combined structure, so that the steel consumption of the whole structure can be reduced.
In this embodiment, the steel plates for the cabins may or may not have a plurality of through holes.
The present embodiment can make those skilled in the art more fully understand the present invention, but the present invention is not limited to the above-mentioned embodiments, and other embodiments besides the above-mentioned embodiments can be provided, and all the technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.
The invention is not limited to the embodiments described above. The above description of specific embodiments is intended to describe and illustrate the technical aspects of the present invention, and is intended to be illustrative only and not limiting. Numerous specific modifications can be made by those skilled in the art without departing from the spirit of the invention and scope of the claims, which are within the scope of the invention.
Claims (4)
1. The steel-concrete combined multi-column supported floating foundation is characterized by comprising columns, horizontal connecting steel pipes, transition sections, anchor chains and anchors, wherein 3-4 columns are uniformly distributed around the transition sections, and the columns are connected with each other through two parallel horizontal connecting steel pipes;
the transition section is a round conical steel pipe with a large upper diameter and a small lower diameter; the upper part of the transition section can be connected with a fan tower through a flange;
the upright post, the transition section and the horizontal connecting steel pipe are connected into a whole in a welding mode;
one end of the anchor chain is connected with the top of each upright post, and the other end of the anchor chain is connected with an anchor on the seabed, so that the whole floating foundation platform is limited in a designated area;
the upright post is of a dumbbell-shaped structure with a small middle diameter and large diameters at two ends, and comprises an inner steel plate, an outer steel plate and a cabin-dividing steel plate, concrete is filled between the inner steel plate and the outer steel plate, and a plurality of cabin-dividing steel plates are arranged on the inner steel plate wall inside the upright post from top to bottom; the top and the bottom of the upright post are fixedly connected with a top steel plate and a bottom steel plate respectively to realize the sealing of the inner steel plate, the outer steel plate and the inside of the upright post.
2. The floating foundation supported by the steel-concrete combined multi-column according to claim 1, wherein the outer diameter of the middle part of the column is 8-12 m, the outer diameters of the two ends are 13-17 m, and the thicknesses of the inner steel plate and the outer steel plate are 8-12 mm.
3. The steel-concrete combined multi-column supported floating foundation according to claim 1, wherein the wall thickness of the concrete is 320-380 mm; the thicknesses of the cabin-dividing steel plate, the top steel plate and the bottom steel plate are 18-22 mm.
4. A steel reinforced concrete composite multi-column supported floating foundation according to claim 1 wherein the distance between the centers of adjacent columns is 38-42 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310197190.XA CN116039861A (en) | 2023-03-03 | 2023-03-03 | Floating foundation supported by steel-concrete combined multiple upright posts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310197190.XA CN116039861A (en) | 2023-03-03 | 2023-03-03 | Floating foundation supported by steel-concrete combined multiple upright posts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116039861A true CN116039861A (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310197190.XA Pending CN116039861A (en) | 2023-03-03 | 2023-03-03 | Floating foundation supported by steel-concrete combined multiple upright posts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116039861A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3428345A1 (en) * | 2017-07-13 | 2019-01-16 | Ramboll GmbH | Foundation for an offshore wind motor |
| CN110001877A (en) * | 2019-04-17 | 2019-07-12 | 华南理工大学 | A kind of three float type offshore wind power foundation of variable cross-section type |
| CN113107783A (en) * | 2021-05-17 | 2021-07-13 | 南方科技大学 | Semi-submerged floating type fan foundation structure |
| CN113619741A (en) * | 2021-07-30 | 2021-11-09 | 华南理工大学 | Variable cross-section three-column type offshore floating wind power foundation |
| JP2022029139A (en) * | 2020-08-04 | 2022-02-17 | ヴィーエル オフショア、エルエルシー | Motion-attenuated semi-submersible floating-type foundation for supporting wind power generation system |
| CN217782119U (en) * | 2022-04-12 | 2022-11-11 | 中国电建集团华东勘测设计研究院有限公司 | Double-cone grid plate type offshore wind power floating foundation structure |
| CN218198751U (en) * | 2022-10-12 | 2023-01-03 | 广州大学 | Semi-submersible floating type fan foundation structure |
-
2023
- 2023-03-03 CN CN202310197190.XA patent/CN116039861A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3428345A1 (en) * | 2017-07-13 | 2019-01-16 | Ramboll GmbH | Foundation for an offshore wind motor |
| CN110001877A (en) * | 2019-04-17 | 2019-07-12 | 华南理工大学 | A kind of three float type offshore wind power foundation of variable cross-section type |
| JP2022029139A (en) * | 2020-08-04 | 2022-02-17 | ヴィーエル オフショア、エルエルシー | Motion-attenuated semi-submersible floating-type foundation for supporting wind power generation system |
| CN113107783A (en) * | 2021-05-17 | 2021-07-13 | 南方科技大学 | Semi-submerged floating type fan foundation structure |
| CN113619741A (en) * | 2021-07-30 | 2021-11-09 | 华南理工大学 | Variable cross-section three-column type offshore floating wind power foundation |
| CN217782119U (en) * | 2022-04-12 | 2022-11-11 | 中国电建集团华东勘测设计研究院有限公司 | Double-cone grid plate type offshore wind power floating foundation structure |
| CN218198751U (en) * | 2022-10-12 | 2023-01-03 | 广州大学 | Semi-submersible floating type fan foundation structure |
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