CN110004968A - A kind of offshore wind farm cylindrical foundation reinforcing method - Google Patents
A kind of offshore wind farm cylindrical foundation reinforcing method Download PDFInfo
- Publication number
- CN110004968A CN110004968A CN201910240123.5A CN201910240123A CN110004968A CN 110004968 A CN110004968 A CN 110004968A CN 201910240123 A CN201910240123 A CN 201910240123A CN 110004968 A CN110004968 A CN 110004968A
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- CN
- China
- Prior art keywords
- foundation
- bucket foundation
- ballast
- offshore wind
- wind farm
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Classifications
-
- 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
-
- 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
- E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
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- Engineering & Computer Science (AREA)
- Structural Engineering (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)
- Foundations (AREA)
- Wind Motors (AREA)
Abstract
The invention belongs to offshore wind power foundation technical field of construction, a kind of offshore wind farm cylindrical foundation reinforcing method is disclosed, bucket foundation installs ballast box after the installation is completed, on bucket foundation top cover top, and in the uniform sinking ballast of ballast tank, the water discharging valve on bucket foundation top cover is opened simultaneously；Ballast box is the body structure of upper opening, is evenly arranged in bucket foundation top cover top.Cause bucket foundation to tilt when ground generates differential settlement, can also reduce the ballast at the larger side of settling amount, until the sedimentation variation of bucket foundation tends towards stability.The vertical load that the present invention passes through increase bucket foundation, realize the ground preloading to the bucket foundation inside soil body, so that cylinder is interior and the cylinder lower part soil body generates overconsolidation, the intensity of the basic internal soil body, bearer properties and stability during enhancing bucket foundation normal service are effectively improved.
Description
Technical field
The invention belongs to offshore wind power foundation technical field of construction, in particular to a kind of offshore wind farm cartridge type base
Plinth reinforcement means.
Background technique
With the development of economy, social progress, people are increasingly enhanced the consciousness of environmental protection, while traditional energy
Exhaustion forces the development of using energy source to Renewable Energy Development.Wind energy is a kind of at present using wider green energy resource, mainly
Application form has two kinds of forms of land wind-powered electricity generation and coastal waters wind-powered electricity generation.Wind power foundation mainly has gravity type foundation, pile foundation, bucket foundation
Etc. a variety of base forms.Compared with the wind power foundation of other forms, bucket foundation has at low cost, simple installation and repeatable makes
The advantages that using.Since 1994 Nian You Den Norske Stats Oljeselskap a.s. (Statoil Group) for the first time successful application bucket foundation platform, bucket foundation exists
It is used widely in Northern European countries's offshore wind farm engineering and Offshore Platform Engineering, China's First bucket foundation jacket platform
CB20B is installed successfully, is successfully installed by the compound bucket foundation that University Of Tianjin develops in Jiangsu sea area within 2010, is indicated cartridge type
The beginning that basis is applied in China's offshore wind farm.
Marine wind electric field is usually in the poor region of geological conditions, and foundation soil is often with mud, silt clay, silty clay
Equal weak soils composition, the soil body has the characteristics that moisture content is big, compressibility is high and intensity is low, for the offshore wind farm at soft soil foundation
, usually using pile foundation as offshore wind power foundation, there is also slipping the construction problems such as stake, steel-pipe pile sinking buckling, though
Right bucket foundation is best suited for such geological conditions, but overly conservative due to designing, and usually abandons using bucket foundation
Scheme.
Summary of the invention
The present invention is to solve the technical issues of bucket foundation Lack of support, provide a kind of offshore wind farm cartridge type base
Plinth reinforcement means can be improved the intensity of the soil body inside bucket foundation, increase the scope of application of bucket foundation, reduce offshore wind farm
Foundation construction cost in engineering promotes the development of offshore wind farm.
In order to solve the above-mentioned technical problem, the present invention is achieved by technical solution below:
A kind of offshore wind farm cylindrical foundation reinforcing method, bucket foundation after the installation is completed, on the bucket foundation top cover
Ballast box is installed in portion, and in the uniform sinking ballast of the ballast tank, opens simultaneously the row on the bucket foundation top cover
Penstock.
Further, the ballast box is the body structure of upper opening, is evenly arranged on the bucket foundation top cover
Portion.
Further, the outer diameter of the ballast box is identical as the diameter of the bucket foundation, and the internal diameter of the ballast box is big
In the maximum gauge of the changeover portion, the bucket foundation height that the height of the ballast box is 1/10~1/2 times.
Further, the bottom surface of the ballast box and side wall are formed by steel plate is gone along with sb. to guard him, described to go along with sb. to guard him surface of steel plate setting
There is a plurality of ribbed stiffener.
Further, the ballast sinking to its with until being flushed at the top of the ballast box.
Further, the inclination angle of the bucket foundation is caused to be greater than 0.25 degree when the bucket foundation generates differential settlement
When, the ballast of 1/5~1/3 height at the larger side of settling amount is reduced, until the sedimentation variation of the bucket foundation tends to be steady
It is fixed.
Further, geological conditions locating for the bucket foundation is clay, mud or silty clay.
The beneficial effects of the present invention are:
The present invention realizes the ground preloading to the bucket foundation inside soil body by the vertical load of increase bucket foundation,
So that cylinder is interior and the cylinder lower part soil body generates overconsolidation, the intensity of the basic internal soil body is effectively improved, the positive informal dress of bucket foundation is enhanced
Bearer properties and stability during labour.
Reinforcement means of the present invention is not limited to wind-powered electricity generation bucket foundation, is equally applicable to other oceans for using bucket foundation
Structural Engineering.
Detailed description of the invention
Fig. 1 is the Construction State schematic diagram of offshore wind farm cylindrical foundation reinforcing method provided by the present invention；
Fig. 2 is the top view of ballast box in offshore wind farm cylindrical foundation reinforcing method provided by the present invention；
Fig. 3 is the side view of ballast box in offshore wind farm cylindrical foundation reinforcing method provided by the present invention.
In above-mentioned figure: 1- bucket foundation；2- changeover portion；The basis 3- flange；4- ballast box；5- ribbed stiffener；6- goes along with sb. to guard him steel plate；
7- sand pocket；8- mud face；9- drain valve.
Specific embodiment
For that can further appreciate that summary of the invention of the invention, feature and effect, the following examples are hereby given, and cooperates attached drawing
Detailed description are as follows:
The invention discloses a kind of offshore wind farm cylindrical foundation reinforcing method, this method is particularly suitable for 1 institute of bucket foundation
Place's geological conditions is the operating conditions such as clay, mud and silty clay, as shown in Figure 1, bucket foundation 1 is the cylinder-shaped knot of bottom opening
Structure is provided with changeover portion 2 among the top cover top of bucket foundation 1, basic flange 3 is provided at the top of changeover portion 2, for connecting wind
Electric basis.
As shown in Figure 1 to Figure 3, a kind of offshore wind farm cylindrical foundation reinforcing method of the invention is installed in bucket foundation 1
After, the ballast box 4 of two semi-circular shape, 4 split of ballast box of two semi-circular shape are installed on 1 top cover top of bucket foundation
For a complete circle ring structure.In general, ballast box 4 is the body structure of upper opening, and quantity is generally 2~6,
It need to be evenly arranged in 1 top cover top of bucket foundation, and be located at 2 periphery of changeover portion.
The bottom surface of ballast box 4 and side wall are formed by steel plate 6 is gone along with sb. to guard him, and go along with sb. to guard him 6 surface of steel plate and a plurality of ribbed stiffener 5 is arranged, with
Guarantee that ballast box 4 has greater stiffness.In general, the outer diameter of ballast box 4 is identical as the diameter of bucket foundation 1, the internal diameter of ballast box 4
Greater than the maximum gauge of 2 lower part of changeover portion, and the height of ballast box 4 is generally 1/10~1/2 times of 1 height of bucket foundation.
The ballast box 4 of two semi-circular shape carries out bolt docking after the installation is completed, by two ballast boxs 4.Into ballast box 4
The uniform sinking sand pocket 7 in portion is used as ballast, opens simultaneously the drain valve 9 on 1 top cover of bucket foundation, the height of sinking sand pocket 7 is most
It is concordant with the top edge of ballast box 4 eventually.
In the use process of bucket foundation 1,1 inclination angle of bucket foundation is caused to be greater than 0.25 when ground generates differential settlement
When spending, the sand pocket 7 of 1/5~1/3 height at the larger side of settling amount should be reduced, when the sedimentation variation of bucket foundation 1 tends towards stability
When, the sand pocket 7 as ballast can be removed.
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited to upper
The specific embodiment stated, the above mentioned embodiment is only schematical, be not it is restrictive, this field it is common
Technical staff under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, may be used also
By make it is many in the form of specific transformation, within these are all belonged to the scope of protection of the present invention.
Claims (7)
1. a kind of offshore wind farm cylindrical foundation reinforcing method, which is characterized in that bucket foundation after the installation is completed, in the cartridge type base
Ballast box is installed on plinth top cover top, and in the uniform sinking ballast of the ballast tank, opens simultaneously the bucket foundation top
The water discharging valve covered.
2. a kind of offshore wind farm cylindrical foundation reinforcing method according to claim 1, which is characterized in that the ballast box is
The body structure of upper opening is evenly arranged in bucket foundation top cover top.
3. a kind of offshore wind farm cylindrical foundation reinforcing method according to claim 2, which is characterized in that the ballast box
Outer diameter is identical as the diameter of the bucket foundation, and the internal diameter of the ballast box is greater than the maximum gauge of the changeover portion, the pressure
Carry the bucket foundation height that the height of case is 1/10~1/2 times.
4. a kind of offshore wind farm cylindrical foundation reinforcing method according to claim 2, which is characterized in that the ballast box
Bottom surface and side wall are formed by steel plate is gone along with sb. to guard him, and the surface of steel plate of going along with sb. to guard him is provided with a plurality of ribbed stiffener.
5. a kind of offshore wind farm cylindrical foundation reinforcing method according to claim 1, which is characterized in that the ballast is heavy
Put to its with until being flushed at the top of the ballast box.
6. a kind of offshore wind farm cylindrical foundation reinforcing method according to claim 1, which is characterized in that when ground generates not
When uniform settlement causes the inclination angle of the bucket foundation to be greater than 0.25 degree, 1/5~1/3 height at the larger side of settling amount is reduced
Ballast, until the sedimentation variation of the bucket foundation tends towards stability.
7. a kind of offshore wind farm cylindrical foundation reinforcing method according to claim 1, which is characterized in that the bucket foundation
Locating geological conditions is clay, mud or silty clay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910240123.5A CN110004968A (en) | 2019-03-28 | 2019-03-28 | A kind of offshore wind farm cylindrical foundation reinforcing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910240123.5A CN110004968A (en) | 2019-03-28 | 2019-03-28 | A kind of offshore wind farm cylindrical foundation reinforcing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110004968A true CN110004968A (en) | 2019-07-12 |
Family
ID=67168500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910240123.5A Pending CN110004968A (en) | 2019-03-28 | 2019-03-28 | A kind of offshore wind farm cylindrical foundation reinforcing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN110004968A (en) |
Citations (11)
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|---|---|---|---|---|
| CN101666101A (en) * | 2009-09-29 | 2010-03-10 | 天津大学 | Movable prefabricated multi-barrel type gravity mixed foundation |
| CN102144091A (en) * | 2008-09-05 | 2011-08-03 | 马克斯·博格建筑两合公司 | Offshore station, foundation for an offshore station, and method for building an offshore station |
| CN102146685A (en) * | 2010-11-29 | 2011-08-10 | 天津市海王星海上工程技术有限公司 | Cylindrical foundation reinforcing method for offshore platform |
| CN102877482A (en) * | 2012-09-11 | 2013-01-16 | 天津大学 | Gravity type foundation structure and construction method thereof |
| CN205875197U (en) * | 2016-07-27 | 2017-01-11 | 天津大学 | Polygon marine wind power bucket foundation |
| CN106759430A (en) * | 2016-11-15 | 2017-05-31 | 天津大学 | A kind of wind-powered electricity generation whole machine construction method of three bucket foundations and concrete support structure |
| CN106759445A (en) * | 2017-02-23 | 2017-05-31 | 天津大学 | A kind of combined type bucket foundation with skirtboard and its construction method |
| CN106836265A (en) * | 2017-02-23 | 2017-06-13 | 天津大学 | A kind of gravity type bucket foundation with skirtboard and its construction method |
| CN106906839A (en) * | 2017-02-23 | 2017-06-30 | 天津大学 | A kind of combined type bucket foundation with skirtboard and its construction method |
| CN107761755A (en) * | 2017-11-30 | 2018-03-06 | 天津大学 | A kind of compound bucket foundation of offshore wind farm |
| US20180266069A1 (en) * | 2016-12-15 | 2018-09-20 | Great Lakes Towers, Llc | Method and apparatus for manufacturing marine foundation |
-
2019
- 2019-03-28 CN CN201910240123.5A patent/CN110004968A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102144091A (en) * | 2008-09-05 | 2011-08-03 | 马克斯·博格建筑两合公司 | Offshore station, foundation for an offshore station, and method for building an offshore station |
| CN101666101A (en) * | 2009-09-29 | 2010-03-10 | 天津大学 | Movable prefabricated multi-barrel type gravity mixed foundation |
| CN102146685A (en) * | 2010-11-29 | 2011-08-10 | 天津市海王星海上工程技术有限公司 | Cylindrical foundation reinforcing method for offshore platform |
| CN102877482A (en) * | 2012-09-11 | 2013-01-16 | 天津大学 | Gravity type foundation structure and construction method thereof |
| CN205875197U (en) * | 2016-07-27 | 2017-01-11 | 天津大学 | Polygon marine wind power bucket foundation |
| CN106759430A (en) * | 2016-11-15 | 2017-05-31 | 天津大学 | A kind of wind-powered electricity generation whole machine construction method of three bucket foundations and concrete support structure |
| US20180266069A1 (en) * | 2016-12-15 | 2018-09-20 | Great Lakes Towers, Llc | Method and apparatus for manufacturing marine foundation |
| CN106759445A (en) * | 2017-02-23 | 2017-05-31 | 天津大学 | A kind of combined type bucket foundation with skirtboard and its construction method |
| CN106836265A (en) * | 2017-02-23 | 2017-06-13 | 天津大学 | A kind of gravity type bucket foundation with skirtboard and its construction method |
| CN106906839A (en) * | 2017-02-23 | 2017-06-30 | 天津大学 | A kind of combined type bucket foundation with skirtboard and its construction method |
| CN107761755A (en) * | 2017-11-30 | 2018-03-06 | 天津大学 | A kind of compound bucket foundation of offshore wind farm |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190712 |