CN106759445A - 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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- CN106759445A CN106759445A CN201710100004.0A CN201710100004A CN106759445A CN 106759445 A CN106759445 A CN 106759445A CN 201710100004 A CN201710100004 A CN 201710100004A CN 106759445 A CN106759445 A CN 106759445A
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- steel
- skirtboard
- combined type
- bucket foundation
- cylindrical structure
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/18—Foundations formed by making use of caissons
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- Engineering & Computer Science (AREA)
- 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)
- Wind Motors (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；Reinforced concrete canopy bottom is connected with steel cylindrical structure using WELDING STUDS, and top pours with armored concrete changeover portion and is connected；Deadweight is passed sequentially through during construction to sink to sink up to steel skirtboard bottom enters sea bed with negative pressure, then is drawn water by the drinking-water pipe on the inside of steel skirtboard, increase the down force of combined type bucket foundation.Simple structure of the present invention, easy construction, low cost, can self-floating towing and negative pressure sinking, the increase of skirtboard can increase the antidumping and erosion resistibility when basis normally uses, and effectively improve the down force on basis, while reduce steel cartridge type basic internal soil and fill in developing.
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
Top cover arrangement has multiple drinking-water pipes, including drinking-water pipe corresponding to each sealing subdivision and corresponding to the steel skirtboard with it is described
The uniform drinking-water pipe of annular section between steel cartridge type structure side wall；
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.
Preferably, the cap diameter of the steel cylindrical structure is 1.2~2 times of base circle barrel diameter.
Preferably, the height of the steel skirtboard is the Sidewall Height of 0.1~0.5 times of the steel cylindrical structure.
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 bucket foundation side wall, thickness and bucket foundation side wall
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 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 cartridge type structure side wall to be drawn water, increase the down force of combined type bucket foundation；
(6) after combined type barrel-shaped foundation sinking is in place, 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 edge of foundation steel skirtboard effectively increases the heavy penetration force on basis, reduces basic internal soil plug height
Development, at the same can also effectively improve basis resistance to capsizing and erosion resistibility, its installation process can self-floating towing and sinking,
Sinking process does not need large scale equipment, with low cost, efficiency of construction is high the features such as.
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, reinforced concrete canopy；3rd, steel skirtboard；4th, steel cylindrical structure；5、
Drinking-water pipe；6th, subdivision plate；7th, bucket foundation side wall.
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 2, the part of steel cylindrical structure 4 three composition,
A diameter of 10~50m of steel cylindrical structure 4, wall thickness is 10~100mm.The top cover outer rim of steel cylindrical structure 4
Expand in bucket foundation side wall 7, the cap diameter of steel cylindrical structure 4 is 1.2~2 times of base circle barrel diameter.Steel
The top cover outer rim of cylindrical 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
The height of bucket foundation side wall 7, wall thickness is identical with bucket foundation side wall 7.
For the ease of foundation immersion leveling, multiple subdivision plates 6 are disposed with inside steel cylindrical structure 4, so that steel cartridge type
Structure 4 constitutes the sealing subdivision of multiple bottom openings with subdivision plate 6.Preferably, steel cylindrical structure 4 constitutes honeybee with subdivision plate 6
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 4, 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 6 and the weldering of the inner roof wall of steel cylindrical structure 4
Fixation is connect, the height of subdivision plate 6 is identical with bucket foundation side wall 7, and thickness is identical with bucket foundation side wall 7.
A diameter of 10~50m of reinforced concrete canopy 2, 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 one-time-concreting of reinforced concrete canopy 2 is molded, and overall arrangement of reinforcement
Rate is not less than 0.3%.
The top of reinforced concrete canopy 2 is poured with armored concrete changeover portion 1 and is connected, and bottom is adopted with steel cylindrical structure 4
Connected with WELDING STUDS.13 drinking-water pipes 5 are disposed with reinforced concrete canopy 2, 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 bucket foundation side wall 7 and steel skirtboard 3.
A diameter of 20~200mm of drinking-water pipe 5, its top is piercing in reinforced concrete canopy 2, bottom and extends to steel cylindrical structure 4
It is internal.
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 4, in the interior welds subdivision plate 6 of steel cylindrical structure 4, in steel cylindrical structure
4 top cover outer rim welding steel skirtboard 3；
B. on the top of steel cylindrical structure 4 by the use of thin-walled profiled sheet is as the template of reinforced concrete canopy 2 and arranges
Reinforcing bar, pouring reinforcement concrete top cover 2, and in the reserved connection steel with armored concrete changeover portion 1 of reinforced concrete canopy 2
Muscle；
C. reinforced concrete canopy 2 is connected with steel cylindrical structure 4 with WELDING STUDS, while in reinforced concrete canopy 2
Upper installation drinking-water pipe 5, and air-tight test is carried out with the combining structure of steel cylindrical structure 4 to reinforced concrete canopy 2；
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 5 on reinforced concrete canopy 2 are opened, combined type bucket foundation is sunk down into sea by deadweight
Bed；Deadweight extracts water unnecessary in steel cylindrical structure 4 out after sinking to stopping by the drinking-water pipe 5 corresponding to steel cylindrical structure 4,
Realize producing negative pressure i.e. negative pressure sinking watching in steel cylindrical structure 4 by the extraction of water body；
Reinforced concrete canopy 2 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 3 into sea bed, it is further added by by corresponding to bucket foundation side wall 7 and steel
Drinking-water pipe 5 between matter skirtboard 3 is drawn water, and increases the down force of combined type bucket foundation；
J. after combined type barrel-shaped foundation sinking is in place, 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
Multiple drinking-water pipes are disposed with, including the drinking-water pipe of subdivision is sealed and corresponding to the steel skirtboard and the steel corresponding to each
The uniform drinking-water pipe of annular section between the wall of cylindrical structure side；
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.
3. a kind of combined type bucket foundation with skirtboard according to claim 1, it is characterised in that the steel cartridge type knot
The cap diameter of structure is 1.2~2 times of base circle barrel diameter.
4. a kind of combined type bucket foundation with skirtboard according to claim 1, it is characterised in that the steel skirtboard
Highly it is the Sidewall Height of 0.1~0.5 times of the steel cylindrical structure.
5. 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.
6. 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 bucket foundation side wall, and thickness is identical with bucket foundation side wall.
7. 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.
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 the wall of cylindrical structure side 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, total construction is finished.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710100004.0A CN106759445A (en) | 2017-02-23 | 2017-02-23 | A kind of combined type bucket foundation with skirtboard and its construction method |
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| CN201710100004.0A CN106759445A (en) | 2017-02-23 | 2017-02-23 | A kind of combined type bucket foundation with skirtboard and its construction method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740436A (en) * | 2017-09-28 | 2018-02-27 | 天津大学 | A kind of three floating drum buoyancy tank combined type foundation structures of sea and its 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 |
| CN109537621A (en) * | 2018-12-19 | 2019-03-29 | 天津大学 | A kind of combined type sea windward electricity bucket foundation |
| CN109930621A (en) * | 2019-04-19 | 2019-06-25 | 中交第一航务工程勘察设计院有限公司 | For the cylinder-shaped foundation structure with water pocket in geological prospecting platform |
| 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 |
| CN110331734A (en) * | 2019-07-05 | 2019-10-15 | 天津大学前沿技术研究院 | A kind of cylinder-shaped foundation structure excavates offshore construction method in advance |
| CN114809063A (en) * | 2022-02-28 | 2022-07-29 | 上海勘测设计研究院有限公司 | Multi-compartment composite cylindrical foundation and construction method thereof |
| CN115045323A (en) * | 2022-07-11 | 2022-09-13 | 天津大学 | Geopolymer air film concrete suction bucket foundation and construction method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740436A (en) * | 2017-09-28 | 2018-02-27 | 天津大学 | A kind of three floating drum buoyancy tank combined type foundation structures of sea and its construction method |
| CN109537621A (en) * | 2018-12-19 | 2019-03-29 | 天津大学 | A kind of combined type sea windward electricity bucket foundation |
| 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 |
| CN109930621A (en) * | 2019-04-19 | 2019-06-25 | 中交第一航务工程勘察设计院有限公司 | For the cylinder-shaped foundation structure with water pocket in geological prospecting platform |
| 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 |
| CN110331734A (en) * | 2019-07-05 | 2019-10-15 | 天津大学前沿技术研究院 | A kind of cylinder-shaped foundation structure excavates offshore construction method in advance |
| CN110331734B (en) * | 2019-07-05 | 2021-01-12 | 天津大学前沿技术研究院 | Cylindrical foundation structure pre-excavation offshore construction method |
| CN114809063A (en) * | 2022-02-28 | 2022-07-29 | 上海勘测设计研究院有限公司 | Multi-compartment composite cylindrical foundation and construction method thereof |
| CN115045323A (en) * | 2022-07-11 | 2022-09-13 | 天津大学 | Geopolymer air film concrete suction bucket foundation and construction method thereof |
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Application publication date: 20170531 |
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