CN110439018A - A kind of new plug-in steel cylinder wind power foundation - Google Patents
A kind of new plug-in steel cylinder wind power foundation Download PDFInfo
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- CN110439018A CN110439018A CN201910713411.8A CN201910713411A CN110439018A CN 110439018 A CN110439018 A CN 110439018A CN 201910713411 A CN201910713411 A CN 201910713411A CN 110439018 A CN110439018 A CN 110439018A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 160
- 239000010959 steel Substances 0.000 title claims abstract description 160
- 238000003466 welding Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 231100000241 scar Toxicity 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 231100000749 chronicity Toxicity 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- 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
- E02D27/52—Submerged foundations, i.e. submerged in open water
- E02D27/525—Submerged foundations, i.e. submerged in open water using elements penetrating the underwater ground
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of new plug-in steel cylinder wind power foundations, are related to offshore wind power foundation technical field.The present invention includes upper guide pipe frame structure, the first infrastructure steel cylinder structure and the second infrastructure steel cylinder structure, upper guide pipe frame structure includes jacket, diagonal brace, blower connection changeover portion, leg stake, infrastructure steel cylinder structure includes steel cylinder, horizontal trapezoid rib is circumferentially equidistantly fixed on steel cylinder inner wall, running through on horizontal trapezoid rib has the reserved steel bushing matched with leg stake.The present invention is big by soil rigidity, and resistance to capsizing is strong, and non-deformability is strong, it is small by wave and water flow load and since jacket is hollow structure, it is highly-safe, steel cylinder itself is used as basic structure, sinking ability is good, speed is fast, adapts to all kinds of geological conditions, and all components are prefabricated by land, job location is transported to be installed, it is high-efficient, small, to can be used under complicated sea situation wind power foundation application is influenced by weather.
Description
Technical field
The invention belongs to offshore wind power foundation technical fields, more particularly to a kind of new plug-in steel cylinder wind-powered electricity generation base
Plinth.
Background technique
Wind energy is a kind of clean, environmental protection renewable energy, it will not with the conversion of itself and the utilization of the mankind and
It increasingly reduces, possesses chronicity, periodical and reproducible advantage, therefore wind energy is real green energy resource.Wind energy at present
Main application be exactly wind turbine power generation, using wind-force carry out power generation wind energy can be effectively utilized, as wind energy on the sea is extensive
Development and utilization, offshore wind turbine foundation becomes another important offshore engineering structure, increasingly the height by country
Pay attention to.
Offshore wind farm construction at present is concentrated mainly on southeastern coast region, by the effect of monsoon, tropical cyclone, wind energy deposit
Abundance, but its harsh environmental conditions, in development process must solve high temperature intensive ultraviolet, high humidity, bring deep-etching with high salt and
Problem of aging, and the influence that the high wind caused by monsoon, the tropical cyclone, high seas design wind power foundation and construct.Therefore
The problems such as offshore wind power foundation design load big, short construction period, construction operation inclement condition how are overcome to become restriction sea
The principal element of upper Wind Power Development.
The traditional structure type of offshore wind power foundation includes: gravity-type structure basis, high-rise pile cap formula structure basis, single pile
Or more pile type foundations, jacket basis, suction cartridge type basis etc., wherein gravity-type structure basis, high-rise pile cap formula structure base
Plinth is big in deep water conditions flowering structure section, and cost is high, and single pile or more pile type foundations, jacket basis are equal in scar higher position
It needs embedding rock to construct, leads to long in time limit, project cost height.
Summary of the invention
The purpose of the present invention is to provide a kind of new plug-in steel cylinder wind power foundations, propose novel gravity type base
Negative pressure cylinder basis jacket, the He Zhenchen large cylinder jacket base case of plinth combination top cancelled structure, have innovated cylinder-soil
The foundation bearing mode of coordination, has played the bearing capacity of ground top soft layer to greatest extent, avoids traditional pile foundation needs
Embedding rock is just able to satisfy the requirement of bearing capacity, and it is high to solve traditional offshore wind power foundation structure type cost, single pile or more
Pile type foundation, jacket basis are required to embedding rock construction in scar higher position, lead to long in time limit, the high problem of project cost.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions:
The present invention is a kind of new plug-in steel cylinder wind power foundation, including upper guide pipe frame structure, the first infrastructure steel circle
Barrel structure and the second infrastructure steel cylinder structure, the upper guide pipe frame structure include jacket, diagonal brace, blower connection transition
Section, leg stake.
The infrastructure steel cylinder structure includes steel cylinder, is circumferentially equidistantly fixed with transverse direction on the steel cylinder inner wall
Trapezoidal rib on the steel cylinder inner wall and is located at through there is a reserved steel bushing matched with leg stake on the horizontal trapezoid rib
The position of reserved steel bushing two sides is respectively and fixedly provided with long floor, homoaxial with reserved steel bushing through having on the horizontal trapezoid rib
Short floor.
Second infrastructure steel cylinder structure includes the second steel cylinder, and the second steel cylinder inner wall is fixed by main short rib
There is inner cylinder, the second reserved steel bushing is provided between the inner circle drum outer wall and the second steel cylinder inner wall, described second is reserved
Steel bushing is fixed with sleeve ribs, is equipped with time short rib between the short rib of the master and the second reserved steel bushing.
Further, the jacket structure on the top forms purlin by jacket, diagonal brace, blower connection changeover portion, leg stake
Rack and panel construction.
Further, the diagonal brace uses based on X-type arrangement, and diameter is greater than 0.8m, the jacket diameter selection range
Between 1.5m-2.0m, the jacket bottom end is fixedly connected with leg stake.
Further, the steel drum diameter between 20m-40m, between wall thickness 15mm-40mm, height about 10m-
Between 45m.
Further, the reserved steel bushing passes through the short floor being located at straight down and connect with steel cylinder inner wall, described
Short floor is located among reserved steel bushing, and the short floor upper end is flushed with steel barrel top, length 5m-25m, according to soft base
It is adjusted with the range of stress.
Further, the long floor is located at vertically arranged, the long floor at reserved steel bushing both sides of the edge about 1-2m
It is desirable same long with steel cylinder.
Further, the horizontal trapezoid rib is axially equally spaced on steel cylinder inner wall along reserved steel bushing, spacing
Desirable 0.5m-1m, quantity can use 4-8.
The invention has the following advantages:
1, the present invention breaks through traditional structural shape, and can integrate the advantages of absorbing traditional structure, proposes novel gravity
Formula basis combines negative pressure cylinder basis jacket, the He Zhenchen large cylinder jacket base case of top cancelled structure, innovation
The foundation bearing mode that cylinder-soil is coordinated, has played the bearing capacity of ground top soft layer to greatest extent, has avoided traditional pile foundation
Embedding rock is needed just to be able to satisfy the requirement of bearing capacity, it is good using steel cylinder, easy prefabricated, the easy transport of jacket, easily construction, behaviour at sea
Feature realizes superpower stability of the new structure in the adverse circumstances of off-lying sea, behaviour at sea, while can reduce work towards construction
Time phase ensures that large batch of offshore wind power foundation is completed to construct and be installed within the limited activity duration.
2, soil rigidity of the present invention is big, and resistance to capsizing is strong, and non-deformability is strong, and since jacket is hollow structure,
It is small by wave and water flow load, highly-safe, and steel cylinder itself is used as basic structure, and sinking ability is good, speed is fast, adapts to each
Class geological conditions, all components are prefabricated by land, transport job location to and installed, high-efficient, influenced by weather it is small, can
For the wind power foundation application under complicated sea situation.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the structural schematic diagram of invention upper guide pipe frame structure；
Fig. 2 is the first infrastructure steel cylinder structure of the invention；
Fig. 3 is the second infrastructure steel cylinder structure of the invention；
Fig. 4 is the structural schematic diagram that upper guide pipe frame structure of the present invention is matched with the first infrastructure steel cylinder structure；
Fig. 5 is the structural schematic diagram that upper guide pipe frame structure of the present invention is matched with the second infrastructure steel cylinder structure.
In attached drawing, parts list represented by the reference numerals are as follows:
1- jacket, 2- diagonal brace, 3- blower connection changeover portion, 4- leg stake, 5- steel cylinder, 6- horizontal trapezoid rib, 7- reserve steel bushing
Cylinder, 8- long floor, the short floor of 9-, 10- the second steel cylinder, the short rib of 11- master, 12- inner cylinder, 13- second reserve steel bushing, 14-
Sleeve ribs, 15- times short rib.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
It please refers to shown in Fig. 1-5, the present invention is a kind of new plug-in steel cylinder wind power foundation, including upper guide pipe support knot
Structure, the first infrastructure steel cylinder structure and the second infrastructure steel cylinder structure, upper guide pipe frame structure include jacket 1,
Diagonal brace 2, blower connect changeover portion 3, leg stake 4.
Infrastructure steel cylinder structure includes steel cylinder 5, is circumferentially equidistantly fixed with horizontal trapezoid rib on 5 inner wall of steel cylinder
6, through there is a reserved steel bushing 7 matched with leg stake 4 on horizontal trapezoid rib 6, on 5 inner wall of steel cylinder and it is located at reserved steel bushing
The position of 7 two sides is respectively and fixedly provided with long floor 8, and running through on horizontal trapezoid rib 6 has and the homoaxial short floor 9 of reserved steel bushing 7.
Second infrastructure steel cylinder structure includes the second steel cylinder 10, and 10 inner wall of the second steel cylinder is solid by main short rib 11
Surely there is inner cylinder 12, the second reserved steel bushing 13 is provided between 10 inner wall of 12 outer wall of inner cylinder and the second steel cylinder, second is pre-
It stays steel bushing 13 to be fixed with sleeve ribs 14, is equipped with time short rib 15 between main short rib 11 and the second reserved steel bushing 13.
Wherein, the jacket structure on top forms truss-like by jacket 1, diagonal brace 2, blower connection changeover portion 3, leg stake 4
Structure, and 1 structure of jacket can be three-tube type and be also possible to four tubular types, be determined by load calculating.
Wherein, diagonal brace 2 uses based on X-type arrangement, and diameter is greater than 0.8m, and 1 diameter selection range of jacket is in 1.5m-2.0m
Between, 1 bottom end of jacket is fixedly connected with leg stake 4.
Wherein, reserved steel bushing 7 passes through the short floor 9 being located at straight down and connect with 5 inner wall of steel cylinder, short floor 9
Among reserved steel bushing 7, flushed at the top of short 9 upper end of floor and steel cylinder 5, length 5m-25m, according to soft base and stress model
It encloses to adjust.
Wherein, long floor 8 is located at vertically arranged at reserved 7 both sides of the edge of steel bushing about 1-2m, and long floor 8 is desirable round with steel
Cylinder 5 is the same as long.
Wherein, horizontal trapezoid rib 6 is axially equally spaced on 5 inner wall of steel cylinder along reserved steel bushing 7, and spacing is desirable
0.5m-1m, quantity can use 4-8.
Steel cylinder is manufactured using vertical Method of Partitioning, is finally closed up integral；Jacket is using tube coupling production, spelling, welding
At steel pipe, integral solder assembling, steel cylinder 5 and jacket 1 use vertical shipment scheme；Steel cylinder 5 diameter about 20m-40m, wall
Thick 15mm-40mm, height about 10m-45m, and there are two types of case study on implementation for steel cylinder structure:
Embodiment 1
Referring to FIG. 1, FIG. 2 and FIG. 4, four positions corresponding with upper guide pipe frame structure leg stake 4 of steel cylinder 5 are welded with reserved steel bushing
7, if upper guide pipe support is three-tube type, reserved steel bushing 7 and its adjacent component are accordingly reduced, and reserve steel bushing 7 and upper guide
For pipe support 1 along the circumferential equidistant arrangement of steel cylinder 5, reserved 7 diameter of steel bushing takes 2.0m-3.0m, leg stake 4 and reserved steel bushing 7 it
Between using grouting way connect, reserve 7 end inclined plate of steel bushing sealing, avoid borehole cleaning, length 10m-45m, according to weak soil feelings
Depending on condition.Reserved steel bushing 7 passes through the short floor 9 being located at straight down and connect with steel cylinder 5, and short floor 9 is located at reserved steel bushing
Among cylinder 7, flushed at the top of short 9 upper end of floor and steel cylinder 5, length 5m-25m is adjusted, in advance according to soft base and the range of stress
It stays and is equipped with vertical long floor 8 at the about 1m-2m of 7 both sides of the edge of steel bushing, long floor 8 is desirable same long with steel cylinder 5, in reserved steel
7 top of sleeve is equipped with the horizontal trapezoid rib 6 being equally spaced, and spacing can use 0.5m-1m, and quantity can use 4-8, horizontal trapezoid rib
6 short side director's degree can use the spacing of long floor 8, and long edge position length can use twice of bond length.Reserved steel bushing 7 passes through long floor
8 closely contact into an entirety with horizontal trapezoid rib 6 and steel cylinder 5, it is ensured that the load action energy of superstructure jacket
Enough steel cylinders 5 for being effectively transmitted to infrastructure, while the overall stiffness of steel cylinder 5 is increased, improve the anti-of steel cylinder 5
Distortional ability.
Embodiment 2
Referring to Fig.1, Fig. 3 and Fig. 5, the second steel cylinder 10 four positions corresponding with upper guide pipe frame structure leg stake 4 are welded with second
Reserved steel bushing 13, if upper guide pipe support is 3 tubular types, reserved steel bushing and its adjacent component are also accordingly reduced, and reserve steel bushing
Cylinder is equidistantly arranged with upper guide pipe support along steel cylinder circular direction, and the second reserved 13 diameter of steel bushing takes 2m-3m, leg stake 4 and
It is connected between second reserved steel bushing 13 using grouting way, the second reserved 13 end inclined plate of steel bushing sealing avoids borehole cleaning.The
Two reserved steel bushings 13 use hole shape structure, and the second reserved 3 top of steel bushing and bottom are all made of steel plate welding and and inner cylinder
12 are welded as a whole, and the second reserved 13 length of steel bushing can use 5m-10m, and top steel plate is top sealing plate, and bottom steel plate is underseal
Plate, two sides steel plate be sleeve ribs 14, it is in a rectangular trapezoid, height between inner cylinder 12 and the second steel cylinder 10 away from
From 12 diameter of inner cylinder is about 3m-5m smaller than 10 diameter of the second steel cylinder, and bond length is the depth of inner cylinder 12, long side length
It is consistent with 10 depth of the second steel cylinder, master's short rib 11 is set between inner cylinder 12 and the second steel cylinder 10, and main short rib 11 is
Rectangle structure is highly the distance between inner cylinder 12 and the second steel cylinder 10, and length is 10 depth of inner cylinder, main short rib 11
Time short rib 15 is equipped between the second reserved steel bushing 13, in a rectangular trapezoid, quantity can be evenly arranged 2-4, depending on the second steel circle
Depending on 10 diameters of cylinder, secondary short 15 long side length of rib can use 2 times of bond lengths, remaining parameter and sleeve ribs 14 are consistent.Inner circle
Cylinder 12 is connected to become an entirety, superstructure by sleeve ribs 14, main short rib 11, secondary short rib 15 and the second steel cylinder 10
By leg, 4 and second the grouting of reserved steel bushing 13 constitute whole novel wind power basis.
This patent soil rigidity is big, and resistance to capsizing is strong, and non-deformability is strong, and since jacket is hollow structure,
Small by wave and water flow load, highly-safe, steel cylinder itself is used as basic structure, and sinking ability is good, speed is fast, adapts to all kinds of
Geological conditions, all components are prefabricated by land, transport job location to and installed, high-efficient, influenced by weather small, can use
Wind power foundation application under complicated sea situation.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (8)
1. a kind of new plug-in steel cylinder wind power foundation, it is characterised in that: including upper guide pipe frame structure, the first infrastructure
Steel cylinder structure and the second infrastructure steel cylinder structure, the upper guide pipe frame structure include jacket (1), diagonal brace (2), wind
Machine connects changeover portion (3), leg stake (4)；
Wherein, the first infrastructure steel cylinder structure includes steel cylinder (5), on steel cylinder (5) inner wall circumferentially etc.
Away from being fixed with horizontal trapezoid rib (6), running through on the horizontal trapezoid rib (6) has the reserved steel bushing matched with leg stake (4)
(7), long floor (8), the cross are respectively and fixedly provided on steel cylinder (5) inner wall and positioned at the position of reserved steel bushing (7) two sides
Running through on trapezoidal rib (6) has and the homoaxial short floor (9) of reserved steel bushing (7)；
The second infrastructure steel cylinder structure includes the second steel cylinder (10), and the second steel cylinder (10) inner wall passes through master
Short rib (11) is fixed with inner cylinder (12), is provided with second between inner cylinder (12) outer wall and second steel cylinder (10) inner wall
Reserved steel bushing (13), the second reserved steel bushing (13) are fixed with sleeve ribs (14), the short rib of master (11) and the
Time short rib (15) is equipped between two reserved steel bushings (13).
2. a kind of new plug-in steel cylinder wind power foundation according to claim 1, which is characterized in that lead on the top
Pipe frame structure forms truss structure by jacket (1), diagonal brace (2), blower connection changeover portion (3), leg stake (4).
3. a kind of new plug-in steel cylinder wind power foundation according to claim 1, which is characterized in that the diagonal brace (2)
Based on being arranged using X-type, diameter is greater than 0.8m, and jacket (1) the diameter selection range is described to lead between 1.5m-2.0m
Pipe support (1) bottom end is fixedly connected with leg stake (4).
4. a kind of new plug-in steel cylinder wind power foundation according to claim 1, which is characterized in that the steel cylinder
(5) diameter between 20m-40m, between wall thickness 15mm-40mm, height about 10m-45m between.
5. a kind of new plug-in steel cylinder wind power foundation according to claim 1, which is characterized in that the reserved steel bushing
Cylinder (7) passes through the short floor (9) being located at straight down and connect with steel cylinder (5) inner wall, and the short floor (9) is located at reserved steel bushing
Cylinder (7) is intermediate, flushes at the top of short floor (9) upper end and steel cylinder (5), length 5m-25m, according to soft base and stress model
It encloses to adjust.
6. a kind of new plug-in steel cylinder wind power foundation according to claim 1, which is characterized in that the long floor
(8) vertically arranged at reserved steel bushing (7) both sides of the edge about 1-2m, the long floor (8) is desirable same with steel cylinder (5)
It is long.
7. a kind of new plug-in steel cylinder wind power foundation according to claim 1, which is characterized in that the horizontal trapezoid
Rib (6) is axially equally spaced on steel cylinder (5) inner wall along reserved steel bushing (7), and spacing can use 0.5m-1m, and quantity is desirable
4-8.
8. a kind of new plug-in steel cylinder wind power foundation according to claim 1, which is characterized in that described second is reserved
Steel bushing (13) uses hole shape structure, and second reserved steel bushing (13) top and bottom are all made of steel plate welding and and inner circle
Cylinder (12) is welded as a whole, and the second reserved steel bushing (13) length can use 5m-10m.
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| CN201910713411.8A CN110439018A (en) | 2019-08-02 | 2019-08-02 | A kind of new plug-in steel cylinder wind power foundation |
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| CN201910713411.8A CN110439018A (en) | 2019-08-02 | 2019-08-02 | A kind of new plug-in steel cylinder wind power foundation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396361A (en) * | 2022-01-25 | 2022-04-26 | 北京三力新能科技有限公司 | Switching device of wind turbine tower and truss combined tower |
| CN115045324A (en) * | 2022-07-26 | 2022-09-13 | 中山大学 | Offshore wind power composite suction cylinder foundation |
| WO2023024002A1 (en) * | 2021-08-24 | 2023-03-02 | 中国华能集团清洁能源技术研究院有限公司 | Static pressure steel cylinder wind power generation set foundation for onshore soft soil, and construction method therefor |
| CN116427457A (en) * | 2023-06-05 | 2023-07-14 | 中交一航局第一工程有限公司 | Large underwater steel cylinder foundation for offshore wind power and construction method thereof |
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