CN106906839A - A kind of combined type bucket foundation with skirtboard and its construction method - Google Patents
A kind of combined type bucket foundation with skirtboard and its construction method Download PDFInfo
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- CN106906839A CN106906839A CN201710099674.5A CN201710099674A CN106906839A CN 106906839 A CN106906839 A CN 106906839A CN 201710099674 A CN201710099674 A CN 201710099674A CN 106906839 A CN106906839 A CN 106906839A
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- skirtboard
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- cylindrical structure
- combined type
- bucket foundation
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
The invention belongs to offshore wind power foundation field, a kind of combined type bucket foundation with skirtboard and its construction method, including steel cylindrical structure, reinforced concrete canopy, armored concrete changeover portion are disclosed；The top cover outer rim of steel cylindrical structure is expanded in steel cylindrical structure and is welded with steel skirtboard, and reinforced concrete canopy edge sets armored concrete skirtboard；Reinforced concrete canopy bottom is connected with steel cylindrical structure using WELDING STUDS, and top pours with armored concrete changeover portion and is connected；Pass sequentially through that deadweight is sunk and negative pressure is sunk during construction until steel skirtboard bottom enters sea bed, then drawn water increase down force by the drinking-water pipe on the inside of steel skirtboard；Sink it is in place after between armored concrete skirtboard and armored concrete changeover portion throwing ballast stone.Simple structure of the present invention, easy construction, low cost, can self-floating towing and sinking, the increase of skirtboard can increase basic normal antidumping and erosion resistibility when using, and effectively improve the heavy penetration force on basis.
Description
Technical field
It is to be related to a kind of combined type tubular base of offshore wind farm specifically the invention belongs to offshore wind power foundation field
Plinth and its construction method.
Background technology
At present, at sea in New Equipment Engineering such as offshore wind farm engineering, foundation structure is generally included：Single pile, tripod, conduit
Posture basis, gravity foundation, negative pressure cylinder base and floating platform structure etc. are several.These bases generally need the large-scale equipment to carry out
Transport and installation, cause costly when marine site is constructed, and the limited in one's ability of seafloor scour is resisted on above-mentioned basis.
Coastal waters foundation structure is usually faced with the souring of reciprocal ocean current, and wash away has necessarily to foundation structure bearing capacity
The influence of degree.Therefore, conventional compound cylinder-shaped foundation structure how is improved, stronger antiscour and antidumping energy is made it have
Power, is sea so as to farthest play the bearing capacity of foundation structure, it is ensured that safety and stability of the foundation structure during running
An important step in foreign basic constructional design.
The content of the invention
Requirement in terms of anti-seafloor scour ability based on offshore wind power foundation structure, the invention provides a kind of band skirtboard
Combined type bucket foundation and its construction method, the foundation construction is convenient, low cost, can self-floating towing and negative pressure sinking, skirtboard
Antidumping and erosion resistibility of the increase when can increase basic normal use, and effectively improve the down force on basis,
The soil plug development of steel cartridge type basic internal is reduced simultaneously.
In order to solve the above-mentioned technical problem, the present invention is achieved by following technical scheme：
A kind of combined type bucket foundation with skirtboard, including steel cylindrical structure, reinforced concrete canopy, armored concrete
Changeover portion；
The top cover outer rim of the steel cylindrical structure is expanded in the steel cylindrical structure, the top of the steel cylindrical structure
Lid outer rim is welded with the steel skirtboard extended downwardly by top cover；The steel cartridge type inside configuration is disposed with multiple subdivision plates, with
Make the steel cylindrical structure that the sealing subdivision of multiple bottom openings is constituted with the subdivision plate；
The reinforced concrete canopy bottom is connected with the steel cylindrical structure using WELDING STUDS；The armored concrete
Cap edge sets the armored concrete skirtboard for upwardly extending, the armored concrete skirtboard and the reinforced concrete canopy one
It is secondary to pour shaping；The reinforced concrete canopy is disposed with multiple drinking-water pipes, including corresponding to the drinking-water pipe of each sealing subdivision
And corresponding to the uniform drinking-water pipe of the annular section between the steel skirtboard and the steel cylindrical structure barrel；
The armored concrete changeover portion is poured and is connected to the reinforced concrete canopy top.
Preferably, a diameter of 10~50m of the steel cylindrical structure, wall thickness is 10~100mm；The steel cartridge type knot
The cap diameter of structure is 1.2~2 times of base circle barrel diameter.
Preferably, the height of the steel skirtboard be 0.1~0.5 times of the steel cylindrical structure main cylinder barrel it is high
Degree.
Preferably, the sealing subdivision that the steel cylindrical structure is constituted with the subdivision plate is cellular subdivision structure, bag
The six identical side subdivisions for including a regular hexagon subdivision at center and being uniformly arranged on around it；Regular hexagon subdivision and side
The length of side of subdivision is impartial, is 0.25 times of the steel cartridge type diameter of movement.
Preferably, the height of the subdivision plate is identical with the bucket foundation barrel, thickness and the bucket foundation barrel
It is identical.
Preferably, the diameter of the reinforced concrete canopy is identical with the cap diameter of steel cylindrical structure, be 10~
50m；Thickness is 0.2~0.6m.
Preferably, the height of the armored concrete skirtboard is 0.5~1.5m, and thickness is 0.2~0.5m.
Preferably, the height of the armored concrete changeover portion is 5~10 meters, and thickness is 0.1~2m, and top surface diameter is less than
Equal to basal diameter, and wall is arc concave shape curved surface, and the curvature of curved surface is 1/60~1/10.
Preferably, the armored concrete changeover portion is prestressed reinforced concrete construction, and deformed bar is disposed with inside it,
The ratio of reinforcement is not less than 0.3%, and the tension stress of its deformed bar is not less than 0.75 times of reinforcement yielding stress.
The construction method of the above-mentioned combined type bucket foundation with skirtboard, is carried out in accordance with the following steps：
(1) will assemble in the combined type bucket foundation immigration water of tower and blower fan, its entirety is swum on the water surface；
(2) combined type bucket foundation transportation by driving support is navigated to specified job location, the sea bed to job location is tentatively put down
It is whole；
(3) all drinking-water pipes on the reinforced concrete canopy are opened, combined type bucket foundation is passed through sinking of conducting oneself with dignity
To sea bed；
(4) by the drinking-water pipe corresponding to the steel cylindrical structure to the steel cylindrical structure after deadweight sinks to stopping
Inside is drawn water, and combined type bucket foundation is sunk by negative pressure and is continued to sink；
(5) when negative pressure sinks down into the steel skirtboard bottom into sea bed, then by corresponding to the steel skirtboard and institute
State the auxiliary of the drinking-water pipe between steel cylindrical structure barrel to be drawn water, increase the down force of combined type bucket foundation；
(6) after combined type barrel-shaped foundation sinking is in place, in the armored concrete skirtboard and the armored concrete transition
Throwing ballast stone between section, total construction is finished.
The beneficial effects of the invention are as follows：
Combined type bucket foundation with skirtboard of the invention and its construction method, the simple compact, construction of the foundation structure is just
Prompt quick, the increase of bottom steel skirtboard effectively increases the heavy penetration force on basis, can reduce the hair of basic internal soil plug height
Exhibition, upper reinforcement concrete skirtboard is after to its inside throwing ballast stone, while the antidumping energy on basis can also be effectively improved
Power and erosion resistibility, its installation process can self-floating towing and sinking, sinking process do not need large scale equipment, with low cost,
The features such as efficiency of construction is high.
Brief description of the drawings
Fig. 1 is the front view of the combined type bucket foundation with skirtboard provided by the present invention；
Fig. 2 is the upward view of the combined type bucket foundation with skirtboard provided by the present invention；
Fig. 3 is the front view of steel cylindrical structure；
Fig. 4 is the front view after the completion of the combined type bucket foundation construction with skirtboard provided by the present invention.
In figure：1st, armored concrete changeover portion；2nd, ballast stone；3rd, armored concrete skirtboard；4th, reinforced concrete canopy；
5th, steel skirtboard；6th, drinking-water pipe；7th, steel cylindrical structure；8th, subdivision plate.
Specific embodiment
For the content of the invention of the invention, feature and effect can be further appreciated that, following examples are hereby enumerated, and coordinate accompanying drawing
Describe in detail as follows：
As shown in Figure 1 to Figure 3, a kind of combined type bucket foundation with skirtboard is present embodiments provided, is mainly mixed by reinforcing bar
Solidifying soil changeover portion 1, reinforced concrete canopy 4, the part of steel cylindrical structure 7 three composition.
A diameter of 10~50m of steel cylindrical structure 7, wall thickness is 10~100mm.The top cover outer rim of steel cylindrical structure 7
Expand in base circle barrel, the cap diameter of steel cylindrical structure 4 is 1.2~2 times of base circle barrel diameter.Steel cylinder
The top cover outer rim of type structure 4 is welded with the steel skirtboard 3 extended downwardly by top cover, and the height of steel skirtboard 3 is 0.1~0.5 times
Highly, wall thickness is identical with the barrel of steel cylindrical structure 7 for main cylinder.
For the ease of foundation immersion leveling, multiple subdivision plates 8 are disposed with inside steel cylindrical structure 7, so that steel cartridge type
Structure 7 constitutes the sealing subdivision of multiple bottom openings with subdivision plate 8.Preferably, steel cylindrical structure 7 constitutes honeybee with subdivision plate 8
Nest shape subdivision structure, including center a regular hexagon subdivision and six identical side subdivisions being uniformly arranged on around it.
The length of side of regular hexagon subdivision and side subdivision is impartial, is 0.25 times of the diameter of steel cylindrical structure 7, as shown in Figure 2.Subdivision structure
In seven subdivisions it is sealed against one another intact in addition to bottom opening, it is ensured that do not go here and there cabin each other, and each subdivision top is respectively
The reserved pipeline for being provided with switch, for applying negative pressure in cabin respectively.The top of subdivision plate 8 and the weldering of the inner roof wall of steel cylindrical structure 7
Fixation is connect, the height of subdivision plate 8 is highly identical with the main cylinder of steel cylindrical structure 7, the barrel phase of thickness and steel cylindrical structure 7
Together.
A diameter of 10~50m of reinforced concrete canopy 4, its diameter is identical with the cap diameter of steel cylindrical structure 4.Steel
The thickness range of choice of reinforced concrete top cover 2 is in 0.2~0.6m.The steel for upwardly extending is set at the edge of reinforced concrete canopy 4
Reinforced concrete skirtboard 3, it is highly 0.5~1.5m, and thickness is 0.2~0.5m, armored concrete skirtboard 3 and armored concrete top
The one-time-concreting of lid 2 is molded, and the overall ratio of reinforcement is not less than 0.3%.
The top of reinforced concrete canopy 4 is poured with armored concrete changeover portion 1 and is connected, and bottom is adopted with steel cylindrical structure 7
Connected with WELDING STUDS.13 drinking-water pipes 6 are disposed with reinforced concrete canopy 4, wherein corresponding to the seven of steel cylindrical structure 4
Individual subdivision is respectively arranged with one, and six are evenly equipped with corresponding to the annular section between the barrel of steel cylindrical structure 7 and steel skirtboard 3
It is individual.A diameter of 20~200mm of drinking-water pipe 5, the top of drinking-water pipe 5 corresponding to steel cylindrical structure 4 is piercing in armored concrete
Top cover 4, bottom is extended to inside steel cylindrical structure 7, and is corresponded between the barrel of steel cylindrical structure 7 and steel skirtboard 3
The top of drinking-water pipe 5 is extended to inside steel cylindrical structure 7 higher than armored concrete skirtboard 3, bottom.
The concrete structure of armored concrete changeover portion 1 is not limited, it is preferred to use the armored concrete changeover portion of curved face type
1, it is highly 5~10 meters, and thickness is 0.1~2m, and top surface diameter is less than or equal to basal diameter, and wall is bent arc concave shape
Face, the curvature of curved surface is 1/60~1/10.Armored concrete changeover portion 1 is prestressed reinforced concrete construction, is disposed with inside it pre-
Stress reinforcing bar, the ratio of reinforcement is not less than 0.3%, and the tension stress of its deformed bar is not less than 0.75 times of reinforcement yielding stress.
Present invention also offers the construction method of the above-mentioned combined type bucket foundation with skirtboard, carry out in accordance with the following steps：
A. land fabrication steel cylindrical structure 7, in the interior welds subdivision plate 8 of steel cylindrical structure 7, in steel cylindrical structure
7 top cover outer rim welding steel skirtboard 5；
B. on the top of steel cylindrical structure 7 by the use of thin-walled profiled sheet as reinforced concrete canopy 4 and armored concrete
The template of skirtboard 3 simultaneously arranges reinforcing bar, pouring reinforcement concrete top cover 2 and armored concrete skirtboard 3, and in reinforced concrete canopy
The 2 reserved connection reinforcing bars with armored concrete changeover portion 1；
C. reinforced concrete canopy 4 is connected with steel cylindrical structure 7 with WELDING STUDS, while in reinforced concrete canopy 4
Upper installation drinking-water pipe 6, and air-tight test is carried out with the combining structure of steel cylindrical structure 7 to reinforced concrete canopy 4；
D. after air-tightness meets the requirements, the template simultaneously assembling reinforcement of arrangement armored concrete changeover portion 1 carries out reinforcing bar and mixes
The concreting of solidifying soil changeover portion 1；
E. after the construction of armored concrete changeover portion 1 is completed and reaches design strength requirement, then tower and blower fan are assembled；
F. the combined type bucket foundation that tower and blower fan will be assembled using crane is moved into water, by combined type bucket foundation
Self-buoyancy makes its entirety swim on the water surface；
G. combined type bucket foundation is dragged to specified job location using towboat, while being carried out just to the sea bed of job location
Step is smooth；
H. all drinking-water pipes 6 on reinforced concrete canopy 4 are opened, combined type bucket foundation is sunk down into sea by deadweight
Bed；Deadweight extracts water unnecessary in steel cylindrical structure 7 out after sinking to stopping by the drinking-water pipe 6 corresponding to steel cylindrical structure 7,
Realize producing negative pressure i.e. negative pressure sinking watching in steel cylindrical structure 7 by the extraction of water body；
Reinforced concrete canopy 4 and sea bed plane holding level should be made in sinking watching, if combined type bucket foundation occurs
During inclination, pressure carries out leveling in the cabins different to the applying of each subdivision by presenting control system；
I. when negative pressure sinks down into the bottom of steel skirtboard 5 into sea bed, it is further added by by corresponding to the barrel of steel cylindrical structure 7
Drawn water with the drinking-water pipe 5 between steel skirtboard 3, increased the down force of combined type bucket foundation；
J. after combined type barrel-shaped foundation sinking is in place, thrown between armored concrete skirtboard 3 and armored concrete changeover portion 1
Ballast stone 2 is thrown, total construction is finished, as shown in Figure 4.
Although being described to the preferred embodiments of the present invention above in conjunction with accompanying drawing, the invention is not limited in upper
The specific embodiment stated, above-mentioned specific embodiment is only schematical, be not it is restricted, this area it is common
Technical staff in the case of present inventive concept and scope of the claimed protection is not departed from, may be used also under enlightenment of the invention
To make the specific conversion of many forms, these are belonged within protection scope of the present invention.
Claims (10)
1. a kind of combined type bucket foundation with skirtboard, it is characterised in that including steel cylindrical structure, reinforced concrete canopy,
Armored concrete changeover portion；
The top cover outer rim of the steel cylindrical structure is expanded in outside the steel cylindrical structure, the top cover of the steel cylindrical structure
Edge is welded with the steel skirtboard extended downwardly by top cover；The steel cartridge type inside configuration is disposed with multiple subdivision plates, so that institute
State the sealing subdivision that steel cylindrical structure constitutes multiple bottom openings with the subdivision plate；
The reinforced concrete canopy bottom is connected with the steel cylindrical structure using WELDING STUDS；The reinforced concrete canopy
Edge sets the armored concrete skirtboard for upwardly extending, and the armored concrete skirtboard is once poured with the reinforced concrete canopy
Build up type；The reinforced concrete canopy is disposed with multiple drinking-water pipes, including drinking-water pipe corresponding to each sealing subdivision and right
The uniform drinking-water pipe of annular section between steel skirtboard described in Ying Yu and the steel cylindrical structure barrel；
The armored concrete changeover portion is poured and is connected to the reinforced concrete canopy top.
2. a kind of combined type bucket foundation with skirtboard according to claim 1, it is characterised in that the steel cartridge type knot
A diameter of 10~50m of structure, wall thickness is 10~100mm；The cap diameter of the steel cylindrical structure is that base circle barrel is straight
1.2~2 times of footpath.
3. a kind of combined type bucket foundation with skirtboard according to claim 1, it is characterised in that the steel skirtboard
Highly for 0.1~0.5 times of the steel cylindrical structure main cylinder barrel highly.
4. a kind of combined type bucket foundation with skirtboard according to claim 1, it is characterised in that the steel cartridge type knot
The sealing subdivision that structure and the subdivision plate are constituted is cellular subdivision structure, including the regular hexagon subdivision at center and uniform
It is arranged at six identical side subdivisions around it；The length of side of regular hexagon subdivision and side subdivision is impartial, is the steel cartridge type
0.25 times of diameter of movement.
5. a kind of combined type bucket foundation with skirtboard according to claim 1, it is characterised in that the height of the subdivision plate
Degree is identical with the bucket foundation barrel, and thickness is identical with the bucket foundation barrel.
6. a kind of combined type bucket foundation with skirtboard according to claim 1, it is characterised in that the armored concrete
The diameter of top cover is identical with the cap diameter of steel cylindrical structure, is 10~50m；Thickness is 0.2~0.6m.
7. a kind of combined type bucket foundation with skirtboard according to claim 1, it is characterised in that the armored concrete
The height of skirtboard is 0.5~1.5m, and thickness is 0.2~0.5m.
8. a kind of combined type bucket foundation with skirtboard according to claim 1, it is characterised in that the armored concrete
The height of changeover portion is 5~10 meters, and thickness is 0.1~2m, and top surface diameter is less than or equal to basal diameter, and wall is in arc
Concave curved surface, the curvature of curved surface is 1/60~1/10.
9. a kind of combined type bucket foundation with skirtboard according to claim 1, it is characterised in that the armored concrete
Changeover portion is prestressed reinforced concrete construction, and deformed bar is disposed with inside it, and the ratio of reinforcement is not less than 0.3%, its prestress steel
The tension stress of muscle is not less than 0.75 times of reinforcement yielding stress.
10. a kind of construction method of combined type bucket foundation as any one of claim 1-9 with skirtboard, its feature exists
In carrying out in accordance with the following steps：
(1) will assemble in the combined type bucket foundation immigration water of tower and blower fan, its entirety is swum on the water surface；
(2) combined type bucket foundation transportation by driving support is navigated to specified job location, the sea bed of job location is carried out preliminary smooth；
(3) all drinking-water pipes on the reinforced concrete canopy are opened, combined type bucket foundation is sunk down into sea by deadweight
Bed；
(4) by the drinking-water pipe corresponding to the steel cylindrical structure to the steel cartridge type inside configuration after deadweight sinks to stopping
Draw water, combined type bucket foundation is sunk by negative pressure and continue to sink；
(5) when negative pressure sinks down into the steel skirtboard bottom into sea bed, then by corresponding to the steel skirtboard and the steel
Drinking-water pipe auxiliary between cylindrical structure barrel processed is drawn water, and increases the down force of combined type bucket foundation；
(6) after combined type barrel-shaped foundation sinking is in place, the armored concrete skirtboard and the armored concrete changeover portion it
Between throwing ballast stone, total construction finish.
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| CN201710099674.5A CN106906839A (en) | 2017-02-23 | 2017-02-23 | A kind of combined type bucket foundation with skirtboard and its construction method |
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| CN201710099674.5A CN106906839A (en) | 2017-02-23 | 2017-02-23 | A kind of combined type bucket foundation with skirtboard and its construction method |
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ID=59207931
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Cited By (13)
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| CN108248783A (en) * | 2018-01-23 | 2018-07-06 | 天津大学 | A kind of novel offshore wind power submersible buoyant foundation and its construction method |
| CN108407987A (en) * | 2018-01-23 | 2018-08-17 | 天津大学 | A kind of offshore wind farm buoyant foundation of tensioning waterborne and its construction method |
| CN108407986A (en) * | 2018-01-23 | 2018-08-17 | 天津大学 | It is a kind of can transportation by driving offshore wind farm buoyant foundation and its construction method |
| CN108454799A (en) * | 2018-01-23 | 2018-08-28 | 天津大学 | A kind of offshore wind farm buoyant foundation transportation by driving construction method |
| CN109356797A (en) * | 2018-12-28 | 2019-02-19 | 北京天杉高科风电科技有限责任公司 | Tower structure, offshore wind turbine and its installation method |
| CN110004968A (en) * | 2019-03-28 | 2019-07-12 | 天津大学 | A kind of offshore wind farm cylindrical foundation reinforcing method |
| CN110158640A (en) * | 2019-06-12 | 2019-08-23 | 长江勘测规划设计研究有限责任公司 | Constructing structure and construction method are built in offshore wind farm bucket foundation water |
| CN110158637A (en) * | 2019-06-12 | 2019-08-23 | 长江勘测规划设计研究有限责任公司 | Offshore wind farm bucket foundation constructing structure and construction method |
| CN110847216A (en) * | 2019-12-18 | 2020-02-28 | 长江勘测规划设计研究有限责任公司 | Offshore wind power foundation with skirt board annular group cylinders |
| CN111236289A (en) * | 2020-01-20 | 2020-06-05 | 重庆大学 | Bridge group pile foundation anti-scouring bearing platform and construction method thereof |
| CN113526286A (en) * | 2021-07-19 | 2021-10-22 | 广州广日电梯工业有限公司 | Elevator health management method and health management device based on information physical system |
| CN115492555A (en) * | 2021-06-18 | 2022-12-20 | 中国石油天然气集团有限公司 | Single-cylinder multi-well suction pile wellhead device |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222049A (en) * | 2018-01-02 | 2018-06-29 | 天津大学 | A kind of offshore wind farm combined type single-pile foundation and its construction method |
| CN108407986B (en) * | 2018-01-23 | 2019-10-25 | 天津大学 | It is a kind of can transportation by driving offshore wind farm buoyant foundation and its construction method |
| CN108248783A (en) * | 2018-01-23 | 2018-07-06 | 天津大学 | A kind of novel offshore wind power submersible buoyant foundation and its construction method |
| CN108407987A (en) * | 2018-01-23 | 2018-08-17 | 天津大学 | A kind of offshore wind farm buoyant foundation of tensioning waterborne and its construction method |
| CN108407986A (en) * | 2018-01-23 | 2018-08-17 | 天津大学 | It is a kind of can transportation by driving offshore wind farm buoyant foundation and its construction method |
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