CN201746849U - Basic structure of offshore wind-power-station fan - Google Patents

Basic structure of offshore wind-power-station fan Download PDF

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Publication number
CN201746849U
CN201746849U CN201020236591XU CN201020236591U CN201746849U CN 201746849 U CN201746849 U CN 201746849U CN 201020236591X U CN201020236591X U CN 201020236591XU CN 201020236591 U CN201020236591 U CN 201020236591U CN 201746849 U CN201746849 U CN 201746849U
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China
Prior art keywords
steel pipe
pipe pile
changeover
fan
foundation
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Expired - Lifetime
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CN201020236591XU
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Chinese (zh)
Inventor
林毅峰
邹辉
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Shanghai Investigation Design and Research Institute Co Ltd SIDRI
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Shanghai Investigation Design and Research Institute Co Ltd SIDRI
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Priority to CN201020236591XU priority Critical patent/CN201746849U/en
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Abstract

The utility model discloses a basic structure of an offshore wind-power-station fan, which comprises a steel pipe pile. The lower end of the steel pipe pile is inserted into the seabed; a wing-shaped structure is arranged at the outer periphery of the steel pipe pile inserted under the seabed, and the upper end of the steel pipe pile is connected with a transition section. Through the wing-shaped structure, the contact area between the steel pipe pile and the soil is increased, and the shortcomings that the horizontal stiffness of the ordinary steel pipe is relatively low and the seabed with poor geological condition can not meet requirements on horizontal deformation for the fan are overcome. The basic structure has large pile-body stiffness, and can provide better horizontal bearing force so as to be suitable for the features of strict horizontal-displacement requirement for the fan base.

Description

Foundation structure of marine wind electric field fan
Technical field
The utility model relates to a kind of fan foundation structure, designs the fan foundation structure that a kind of marine wind electric field is used especially.
Background technology
Wind energy turbine set can be divided into land and marine by building the place.Compare with land wind energy turbine set, marine wind electric field has that wind speed is big, effectively generating dutation is long and do not take advantage such as land.China's marine wind electric field construction is in the starting stage, is about to welcome Rapid development stage.Wind-powered electricity generation unit basic engineering and construction are the key jobs that marine wind electric field is built, it also is the key factor that influences the marine wind electric field investment, be subjected to oceanic tide, wave, water currents, and the specific (special) requirements during the installation and operation of wind-powered electricity generation unit, offshore wind farm unit basic engineering and difficulty of construction height, blower foundation suffers influences such as ship collision easily near the run duration navigation zone.Therefore, the design of offshore wind turbine foundation need be considered simple, the factors such as facility, short construction period, blower fan is easy for installation, cost is reasonable of constructing of foundation structure form under the marine environment.
At present, the wind-powered electricity generation unit foundation structure pattern of having built marine wind electric field mainly contains 4 kinds:
1, single pile basis
In sea bed, directly squeeze into the basis of a large diameter steel pipe pile as the wind-powered electricity generation unit.The overwhelming majority all adopts the single pile basis in the marine wind electric field that has built up at present.The major advantage on single pile basis is that form of structure is simple, easy construction.Major defect is that compliance is not strong: along with the fast development of wind-powered electricity generation unit manufacturing technology, single-machine capacity constantly increases, and the single pile diameter that needs is increasing, and the pile foundation construction difficulty also increases thereupon; Single pile foundation level rigidity is relatively low, is difficult to satisfy the requirement of blower fan to horizontal distortion in the poor place of sea bed geological conditions.
2, many pile leaders body panel basis
Adopt and the similar structure of offshore oil jacket platform, in sea bed, place a steel structure platform of forming by the steel member earlier, squeeze into steel pipe pile by the spud leg sleeve pipe on the platform then.Many pile leaders frame basis is constantly to increase a kind of foundation structure pattern that the higher requirement of soil rigidity is adopted in order to adapt to wind-powered electricity generation unit single-machine capacity, and its advantage is that horizontal rigidity is big.Major defect is owing to adopt steel work to cause involving great expense later stage operating cost height; Owing to adopt the mode of driving piles behind the jacket of placing earlier, before piling and in the piling process, jacket is subjected to the wave flow action to be difficult to accurate leveling to locate, be difficult to satisfy the planeness requirement of top blower fan tall and slender structure lifting to the strictness of basis proposition, need to adopt additional connector to carry out the secondary leveling, increased the complexity of difficulty of construction and structure.
3, concrete gravity formula basis
The concrete structure of directly placing a large volume on sea bed relies on the basis to resist horizontal loading from the frictional force that focuses on the generation of sea bed base surface as blower foundation, keeps base fixed.The compliance on concrete gravity formula basis is poor, and the depth of water of its application is limited, and requires the sea bed foundation condition good, can bear huge base pressure.On the other hand, the concrete fatigue strength ratio is lower, and it is bigger to rely on concrete to bear the structural section that wind-powered electricity generation unit long-term cyclic loading in top needs fully.
4, highrise pile cap basis
The highrise pile cap basis is to squeeze into below the sea bed face with many piles, exposes the sea above it, utilizes the stake top to build bottom concrete earlier as being supported on its upper end, to form operation platform; The top of stake is welded to connect changeover portion with steel work, and last concreting makes changeover portion imbed concrete bearing platform.The advantage of the basic pattern of this kind is bigger, crashproof with the obvious advantage, the easy construction of integral rigidity.But also there are many shortcomings in it: long construction period, field Welding are too much, and construction quality is difficult for guaranteeing etc.
In sum, because the complexity that marine wind electric field is built and to the high dependency of meteorological condition, all there is different defectives in several offshore wind farm unit foundation structure forms that proposed at present, be to adapt to the extensive marine wind electric field construction requirements of China, need to propose that a kind of structural shape is simple, short construction period, sea bed ground compliance are strong, horizontal bearing capacity is preferably arranged, can comparatively fast produce the offshore wind farm unit foundation structure pattern of economic benefit.
The utility model content
The technical problems to be solved in the utility model provides that a kind of form of structure is simple, short construction period, sea bed ground compliance are strong, horizontal bearing capacity is preferably arranged, safe and reliable, the marine wind electric field foundation structure that can comparatively fast produce economic benefit.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of foundation structure of marine wind electric field fan comprises a steel pipe pile, and the lower end of described steel pipe pile is inserted in below the sea bed face, and the outer peripheral face that is inserted in the following steel pipe pile of sea bed face is provided with airfoil structure, and the upper end of described steel pipe pile is connected with a changeover portion.
Preferably, described airfoil structure comprises the several piece steel plate, and described steel plate is along on the outer peripheral face that radially is welded on described steel pipe pile of described steel pipe pile.
Preferably, the upper end of described steel pipe pile is inserted in the described changeover portion, is connected by the grouting connector between described steel pipe pile and the described changeover portion.
Preferably, be provided with template or rubber sealing between the bottom of described changeover portion and the described steel pipe pile.
Preferably, described changeover portion is provided with conversion platform and working platform.
Preferably, described changeover portion is provided with berthing device.
Preferably, described changeover portion is provided with climbing ladder apparatus.
Such scheme has following beneficial effect:
(1) this structure is provided with airfoil structure on the outer peripheral face of the steel pipe pile below the sea bed face, setting by this airfoil structure, increased the contact area of steel pipe pile with soil, it is relatively low to overcome ordinary steel pile tube horizontal rigidity preferably, is difficult to satisfy the shortcoming of blower fan to the requirement of horizontal distortion in the poor place of sea bed geological conditions.There is bigger pile body stiffness on this kind basis, and horizontal bearing capacity preferably can be provided, to adapt to blower foundation to the tighter characteristic of horizontal displacement requirement.
(2) steel pipe pile, airfoil structure and changeover portion all adopt prefabrication to connect, and can ensure the quality of products, have good anti-fatigue performance preferably.
(3) construction period is very short, and working procedure is simple, and after steel pipe pile and airfoil structure integral body were squeezed into below the sea bed face, changeover portion linked to each other with the stake top by the grouting connector, and several days time just can be constructed and be finished under the situation of weather permission.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the enlarged diagram at A place among Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail.
As shown in Figure 1, 2, this foundation structure of marine wind electric field fan comprises a steel pipe pile 1, the lower end of steel pipe pile 1 is inserted in below the sea bed face, the outer peripheral face that is inserted in the following steel pipe pile 1 of sea bed face is provided with airfoil structure 2, airfoil structure 2 includes the several piece steel plate, and these steel plates are along forming airfoil structure 2 on the outer peripheral face that radially is welded on steel pipe pile 1 of steel pipe pile 1.The upper end of steel pipe pile 1 is connected with a changeover portion 4, and the upper end of steel pipe pile 1 is inserted in the changeover portion 4, is connected by grouting connector 3 between steel pipe pile 1 and the changeover portion 4, is provided with template or rubber sealing 9 between the bottom of changeover portion 4 and the steel pipe pile 1.Also be provided with conversion platform 7, working platform 8, berthing device 5 and climbing ladder apparatus 6 on the changeover portion 4.
Grouting connector 3 is formed in the slit between steel pipe pile 1 and the changeover portion 4, between this formation grout compartment, slit.Between the bottom of changeover portion 4 and steel pipe pile 1, template is set or rubber sealing 9 can prevent that the grouting agent between the grout compartment from leaking outside, can accelerate between the grout compartment simultaneously in the moulding of grouting connector 3, template or rubber sealing 9 must guarantee to have sufficient intensity.Grouting connector 3 plays leveling and the double action that is connected changeover portion 4, and the position of grouting connector 3 should be to go up the position slightly in the bottom of changeover portion 4.
Seam occurs building for fear of grouting connector 3, grouting should once be finished.When the grouting operation began, enough grouting agents that satisfies quality requirement of should guaranteeing supply were set up reliable, as to ensure the quality of products a grouting agent replenishment system by consumption rate, so that farthest be in the milk between the grout compartment.Guarantee that grouting system has enough channel capacities, guarantee from discharging gas, water and unnecessary slurries between the grout compartment, and then guarantee that the grouting rate exceeds the actual demand rate.During grouting, confirm by the top or the outlet top of grouting link position whether the filling between the grout compartment is finished.
The surface of steel pipe pile 1, changeover portion 4 should be cleaned, and before steel pipe pile 1, changeover portion 4 location, the inner surface of steel pipe pile 1 external surface and changeover portion 4 should check whether grease is arranged, oil, paint, marine growth etc.Between the grouting implementation period, should carry out regular test to confirm following properties: the temperature of density, air content, viscosity, workability, dialysis, grouting, compressive stress intensity.
Changeover portion 4 should be with berthing device 5, climbing ladder apparatus 6, conversion platform 7, working platform 8 integral hoistings, and the method can be avoided marine welding, guarantee welding quality easily and save time.The setting of berthing device 5, climbing ladder apparatus 6, conversion platform 7, working platform 8 can be convenient to wind energy turbine set operating maintenance service ship berthing and personnel climb.
This foundation structure of marine wind electric field fan has following beneficial effect:
(1) this structure is provided with airfoil structure on the outer peripheral face of the steel pipe pile below the sea bed face, setting by this airfoil structure, increased the contact area of steel pipe pile with soil, it is relatively low to overcome ordinary steel pile tube horizontal rigidity preferably, is difficult to satisfy the shortcoming of blower fan to the requirement of horizontal distortion in the poor place of sea bed geological conditions.There is bigger pile body stiffness on this kind basis, and horizontal bearing capacity preferably can be provided, to adapt to blower foundation to the tighter characteristic of horizontal displacement requirement.
(2) steel pipe pile, airfoil structure and changeover portion all adopt prefabrication to connect, and can ensure the quality of products, have good anti-fatigue performance preferably.
(3) construction period is very short, and working procedure is simple, and after steel pipe pile and airfoil structure integral body were squeezed into below the sea bed face, changeover portion linked to each other with the stake top by the grouting connector, and several days time just can be constructed and be finished under the situation of weather permission.
More than foundation structure of marine wind electric field fan that the utility model embodiment is provided be described in detail; for one of ordinary skill in the art; thought according to the utility model embodiment; part in specific embodiments and applications all can change; in sum; this description should not be construed as restriction of the present utility model, and all any changes of being made according to the utility model design philosophy are all within protection domain of the present utility model.

Claims (7)

1. foundation structure of marine wind electric field fan, comprise a steel pipe pile, the lower end of described steel pipe pile is inserted in below the sea bed face, it is characterized in that: the outer peripheral face that is inserted in the following steel pipe pile of sea bed face is provided with airfoil structure, and the upper end of described steel pipe pile is connected with a changeover portion.
2. foundation structure of marine wind electric field fan according to claim 1 is characterized in that: described airfoil structure comprises the several piece steel plate, and described steel plate is along on the outer peripheral face that radially is welded on described steel pipe pile of described steel pipe pile.
3. foundation structure of marine wind electric field fan according to claim 1 is characterized in that: the upper end of described steel pipe pile is inserted in the described changeover portion, is connected by the grouting connector between described steel pipe pile and the described changeover portion.
4. foundation structure of marine wind electric field fan according to claim 3 is characterized in that: be provided with template or rubber sealing between the bottom of described changeover portion and the described steel pipe pile.
5. foundation structure of marine wind electric field fan according to claim 1 is characterized in that: described changeover portion is provided with conversion platform and working platform.
6. foundation structure of marine wind electric field fan according to claim 1 is characterized in that: described changeover portion is provided with berthing device.
7. foundation structure of marine wind electric field fan according to claim 1 is characterized in that: described changeover portion is provided with climbing ladder apparatus.
CN201020236591XU 2010-06-24 2010-06-24 Basic structure of offshore wind-power-station fan Expired - Lifetime CN201746849U (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102535534A (en) * 2012-01-05 2012-07-04 江苏海上龙源风力发电有限公司 Construction process for leveling and grouting intertidal zone polygonal bracket fan foundation
CN103205980A (en) * 2013-04-24 2013-07-17 中国水电顾问集团华东勘测设计研究院 Large-diameter mono-pile foundation of offshore wind turbine and construction method of large-diameter mono-pile foundation
CN103597143A (en) * 2011-06-07 2014-02-19 禹渡咏 Method for installing an underwater support column
CN104120730A (en) * 2014-07-17 2014-10-29 蓝振宁 Pile foundation with wing
CN104812963A (en) * 2012-10-03 2015-07-29 技术项目有限公司 Gravity-based foundation system for installation of offshore wind turbine and method for installing same
CN105317054A (en) * 2015-07-22 2016-02-10 龙源(北京)风电工程设计咨询有限公司 Draught fan foundation structure with single pile of transition sections and construction method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103597143B (en) * 2011-06-07 2016-02-03 禹渡咏 The method of underwater support column is installed
CN103597143A (en) * 2011-06-07 2014-02-19 禹渡咏 Method for installing an underwater support column
CN102535534A (en) * 2012-01-05 2012-07-04 江苏海上龙源风力发电有限公司 Construction process for leveling and grouting intertidal zone polygonal bracket fan foundation
CN102535534B (en) * 2012-01-05 2016-01-20 江苏海上龙源风力发电有限公司 A kind of intertidal zone multi-angular bracket blower foundation leveling grouting construction process
CN104812963B (en) * 2012-10-03 2017-10-13 技术项目有限公司 Method for the ground based system based on gravity and the installation for offshore wind turbine ground based system of the installation of offshore wind turbine
CN104812963A (en) * 2012-10-03 2015-07-29 技术项目有限公司 Gravity-based foundation system for installation of offshore wind turbine and method for installing same
CN103205980B (en) * 2013-04-24 2015-09-30 中国水电顾问集团华东勘测设计研究院 Offshore wind turbine large diameter single pile foundation and construction method thereof
CN103205980A (en) * 2013-04-24 2013-07-17 中国水电顾问集团华东勘测设计研究院 Large-diameter mono-pile foundation of offshore wind turbine and construction method of large-diameter mono-pile foundation
CN104120730A (en) * 2014-07-17 2014-10-29 蓝振宁 Pile foundation with wing
CN105317054A (en) * 2015-07-22 2016-02-10 龙源(北京)风电工程设计咨询有限公司 Draught fan foundation structure with single pile of transition sections and construction method

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Granted publication date: 20110216