CN110158640A - Constructing structure and construction method are built in offshore wind farm bucket foundation water - Google Patents
Constructing structure and construction method are built in offshore wind farm bucket foundation water Download PDFInfo
- Publication number
- CN110158640A CN110158640A CN201910508072.XA CN201910508072A CN110158640A CN 110158640 A CN110158640 A CN 110158640A CN 201910508072 A CN201910508072 A CN 201910508072A CN 110158640 A CN110158640 A CN 110158640A
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- China
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- steel
- casing
- bucket foundation
- steel cylinder
- cofferdam
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- 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
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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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 present invention relates to constructing structure and construction method are built in offshore wind farm bucket foundation water.The constructing structure, the steel cylinder including concrete changeover portion sum, steel cylinder are built on the coast, and steel cylinder forms sealing structure by the lamina tecti at top, and lamina tecti forms workbench；Along the pre-buried circle doughnut-shaped steel plate of lamina tecti outer wall, steel cofferdam casing is built on the workbench that lamina tecti is formed, steel cofferdam casing and doughnut-shaped steel plate weld, and transverse support bar is welded in steel cofferdam casing.The main construction site of bucket foundation is placed in water, so that place optional position greatly increases, reduces the dependence to harbour.Meanwhile being transported outward after the completion of foundation construction conveniently, convenient for seperated or overall package, reduce the dependence hung to dedicated large-sized gantry.In addition, steel cofferdam and connecting rod can reuse, economy with higher.It is short construction period, at low cost.With good economy, be conducive to promote and apply.
Description
Technical field
The present invention relates to a kind of offshore wind power equipments, and in particular in offshore wind farm bucket foundation water build constructing structure and
Construction method.
Background technique
In the environment of the whole world pays high attention to and develops low-carbon economy, wind-power electricity generation is huge as renewable energy market potential
Greatly.Although offshore wind farm is started late, but stability by sea wind resource and the characteristics of big generated output, and offshore wind farm is close
It is developed rapidly all over the world over year.And blower foundation build and difficulty of construction is big it is costly be marine wind electric field construction most
One of big restrictive condition.Bucket foundation compares other base forms, has huge application advantage.Bucket foundation low cost, peace
Dress is fast, has huge development prospect, but the construction on basis is high to harbour requirement, and special gantry crane is needed to install.Basis is built
It is transported after having made to fabricating yard and needs special ship.Site requirements is high, device requirement is harsh, the duration is slow, costly is also
The main reason for puzzlement bucket foundation is fast-developing at present.
Bucket foundation is from great, and especially In Guangdong Province is limited by steel processing industry, landform, geological conditions.Using
Bucket foundation, basis self weight reach 7000t, highly reach 40m with width.The coastline length of general harbour 500m it
It is interior, seriously constrain the yield of bucket foundation.And since basis makes the mobile dedicated portal jib crane of needs, after basis completes
Transport is also required to extraordinary ship, and manufacturing enterprise is difficult to bear high expense.
Summary of the invention
In order to solve the above problem, the present invention, which provides, builds constructing structure and construction party in a kind of offshore wind farm bucket foundation water
The main construction site of bucket foundation is placed in water by method, the present invention, so that place optional position greatly increases, is reduced to harbour
Dependence.
The technical solution adopted by the present invention is that: construction method is built in a kind of offshore wind farm bucket foundation water, feature exists
In: the following steps are included:
1), the lower part steel cylinder on prefabricated barrel basis and lamina tecti is installed on the coast, guarantees that steel cylinder forms hermetic properties and simultaneously makes
Lamina tecti forms workbench；Along the pre-buried circle doughnut-shaped steel plate of lamina tecti outer wall；
2), the steel cylinder for forming air-tightness is placed in beach or phytal zone, and generate negative pressure by pumping to make under steel cylinder
It is heavy；
3), after steel cylinder sinks and stablizes, steel cofferdam casing is welded on doughnut-shaped steel plate, is welded laterally in steel cofferdam casing
Support rod；
4), by filling exhaust adjustment workbench levelness into steel cylinder；
5), after the completion of workbench Level-adjusting, within the scope of steel cofferdam casing, bucket foundation top concrete is carried out
Construction of Transition Section；
6), after the completion of concrete Construction of Transition Section, steel cofferdam casing is removed, and is taken advantage of at high tides by being pressed into gas into steel cylinder
Body, or cooperation buoyancy tank, jack up bucket foundation, and transport to designated place.
Preferably, the water surface is higher by 0.5m~1.0m when the steel cofferdam casing crest level is than maximum wave height in step 3).
Preferably, in step 3), circumferentially distributed ribbed stiffener in the steel cofferdam casing.
Preferably, sedimentation Level monitoring point is arranged in steel cylinder surrounding in step 4).
Constructing structure is built in a kind of offshore wind farm bucket foundation water, the concrete mistake including bucket foundation top is arranged in
Cross section and the steel cylinder that bucket foundation lower part is set, it is characterised in that: the steel cylinder is built on the coast, and the steel cylinder passes through top
Lamina tecti form sealing structure, the lamina tecti forms workbench；Doughnut-shaped steel plate is enclosed along the lamina tecti outer wall pre-buried one,
Steel cofferdam casing is built on the workbench that the lamina tecti is formed, the steel cofferdam casing and doughnut-shaped steel plate weld, described
Transverse support bar is welded in steel cofferdam casing.
Preferably, the lamina tecti is equipped with vent charge.
The beneficial effect that the present invention obtains is: the main construction site of bucket foundation is placed in water, so that place optional position
It greatly increases, reduces the dependence to harbour.Meanwhile being transported outward after the completion of foundation construction conveniently, convenient for seperated or overall package, subtract
The dependence hung to dedicated large-sized gantry is lacked.In addition, steel cofferdam and connecting rod can reuse, economy with higher
Property.It is short construction period, at low cost.With good economy, be conducive to promote and apply.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the top view of Fig. 1；
Appended drawing reference: 11, steel cylinder；12, concrete changeover portion；2, doughnut-shaped steel plate；3, steel cofferdam casing；4, cross-brace
Bar；5, vent charge；6, ribbed stiffener.
Specific embodiment
The present invention will be further explained in the following with reference to the drawings and specific embodiments.
As shown in Figs. 1-2, constructing structure is built in a kind of offshore wind farm bucket foundation water of the invention, including is arranged in cylinder
The concrete changeover portion 12 on type basis top and the steel cylinder 11 that bucket foundation lower part is arranged in, steel cylinder 11 are built on the coast, steel cylinder
11 form sealing structure by the lamina tecti at top, and lamina tecti forms workbench, for building concrete changeover portion 12；Along top
The pre-buried circle doughnut-shaped steel plate 2 of cover board outer wall, builds steel cofferdam casing 3, steel cofferdam casing 3 on the workbench that lamina tecti is formed
It is welded with doughnut-shaped steel plate 2, transverse support bar 4 is welded in steel cofferdam casing 3.Lamina tecti is equipped with vent charge 5, for adjusting steel
The state of cylinder 11 in water.
The steel cylinder 11 of the lower part on composite tube basis of the invention is built on the coast, and the concrete changeover portion 12 on top is in water
Cofferdam is built, and doughnut-shaped steel plate 2 is embedded between steel cylinder 11 and concrete changeover portion 12, and steel cofferdam casing 3 is welded in doughnut-shaped steel plate 2
On, meet certain height and thickness, reusable, the water surface is higher by when 3 crest level of steel cofferdam casing is than maximum wave height
0.5m~1.0m.3 inner wall of steel cofferdam casing welds transverse support bar 4, and circumferentially distributed ribbed stiffener 6 in steel cofferdam casing 3, increase is enclosed
Weir ability resistant to pressure.
Construction method is built in a kind of offshore wind farm bucket foundation water of the invention, the following steps are included:
1) first that bucket foundation lower part steel cylinder 11 is prefabricated on the coast when, constructing, and placed in water after top cover plate, guarantee
Steel cylinder 11 forms hermetic properties and the lamina tecti at 11 top of steel cylinder is made to form workbench, the weldering of 11 top header plate surrounding of steel cylinder
Reserved doughnut-shaped steel plate 2 is connect, convenient for welding with steel cofferdam casing 3, so as to next process construction；
2), steel cylinder 11 is placed in beach or phytal zone by sliding or crane, beach or phytal zone require rising
The time of tide can guarantee that steel cylinder 11 smoothly transports, and generates negative pressure by pumping and steel cylinder 11 is made to generate certain sinking；
(3), after steel cylinder 11 is stablized, steel cofferdam casing 3 is welded on doughnut-shaped steel plate 2, is welded in steel cofferdam casing 3 horizontal
To support rod 4, the circumferentially distributed ribbed stiffener 6 in steel cofferdam casing 3,3 height of steel cofferdam casing and thickness are set according to depth condition
It sets, steel cofferdam casing 3 should be higher than that flood tide water level 0.5m to 1.0m or more；
(4), sedimentation Level monitoring point is set in 11 surrounding of steel cylinder, situation is settled according to construction speed and geology, by filling
Exhaust outlet 5 fills exhaust adjustment workbench levelness into steel cylinder 11；
(5), after the completion of workbench Level-adjusting, in 3 range of steel cofferdam casing, bucket foundation top coagulation is carried out
Native changeover portion 2 is constructed；
6) after, being installed, steel cofferdam casing 3 is removed, and is taken advantage of at high tides by being pressed into gas to 11 bottom of steel cylinder, or is matched
The external equipments such as buoyancy tank are closed, jack up bucket foundation, and transport to designated place by barge or towage.
Basic principle and key structural feature of the invention has been shown and described above.The present invention is not by the limit of examples detailed above
System, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It both falls in the range of claimed invention.The claimed scope of the invention is by appended claims and its equivalent
It defines.
Claims (6)
1. building construction method in a kind of offshore wind farm bucket foundation water, it is characterised in that: the following steps are included:
1), the lower part steel cylinder on prefabricated barrel basis and lamina tecti is installed on the coast, guarantees that steel cylinder forms hermetic properties and simultaneously makes top cover
Plate forms workbench；Along the pre-buried circle doughnut-shaped steel plate of lamina tecti outer wall；
2), the steel cylinder for forming air-tightness is placed in beach or phytal zone, and generating negative pressure by pumping makes steel cylinder sink；
3), after steel cylinder sinks and stablizes, steel cofferdam casing is welded on doughnut-shaped steel plate, welds cross-brace in steel cofferdam casing
Bar；
4), by filling exhaust adjustment workbench levelness into steel cylinder；
5), after the completion of workbench Level-adjusting, within the scope of steel cofferdam casing, the concrete transition of bucket foundation top is carried out
Section construction；
6), after the completion of concrete Construction of Transition Section, steel cofferdam casing is removed, and is taken advantage of at high tides by being pressed into gas into steel cylinder,
Or cooperation buoyancy tank, bucket foundation is jacked up, and transport to designated place.
2. building construction method in offshore wind farm bucket foundation water according to claim 1, it is characterised in that: step 3)
In, the water surface is higher by 0.5m~1.0m when the steel cofferdam casing crest level is than maximum wave height.
3. building construction method in offshore wind farm bucket foundation water according to claim 1, it is characterised in that: step 3)
In, circumferentially distributed ribbed stiffener in the steel cofferdam casing.
4. building construction method in offshore wind farm bucket foundation water according to claim 1, it is characterised in that: step 4)
In, in steel cylinder surrounding, sedimentation Level monitoring point is set.
5. building constructing structure in a kind of offshore wind farm bucket foundation water, the concrete transition including bucket foundation top is arranged in
Section and the steel cylinder that bucket foundation lower part is set, it is characterised in that: the steel cylinder is built on the coast, and the steel cylinder passes through top
Lamina tecti forms sealing structure, and the lamina tecti forms workbench；Doughnut-shaped steel plate is enclosed along the lamina tecti outer wall pre-buried one,
Steel cofferdam casing is built on the workbench that the lamina tecti is formed, the steel cofferdam casing and doughnut-shaped steel plate weld, the steel
Transverse support bar is welded in the casing of cofferdam.
6. building constructing structure in offshore wind farm bucket foundation water according to claim 5, it is characterised in that: the top cover
Plate is equipped with vent charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910508072.XA CN110158640A (en) | 2019-06-12 | 2019-06-12 | Constructing structure and construction method are built in offshore wind farm bucket foundation water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910508072.XA CN110158640A (en) | 2019-06-12 | 2019-06-12 | Constructing structure and construction method are built in offshore wind farm bucket foundation water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110158640A true CN110158640A (en) | 2019-08-23 |
Family
ID=67628863
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910508072.XA Pending CN110158640A (en) | 2019-06-12 | 2019-06-12 | Constructing structure and construction method are built in offshore wind farm bucket foundation water |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010019050A1 (en) * | 2008-08-14 | 2010-02-18 | Dr. Techn. Olav Olsen As | Foundation for an offshore wind turbine generator and method of constructing and installing the foundation |
| CN102877482A (en) * | 2012-09-11 | 2013-01-16 | 天津大学 | Gravity type foundation structure and construction method thereof |
| US20150104259A1 (en) * | 2013-09-09 | 2015-04-16 | Fontain M. Johnson | Method of construction, installation, and deployment of an offshore wind turbine on a concrete tension leg platform |
| 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 |
| 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 |
| CN210562255U (en) * | 2019-06-12 | 2020-05-19 | 长江勘测规划设计研究有限责任公司 | Offshore wind power cylinder type foundation underwater construction structure |
-
2019
- 2019-06-12 CN CN201910508072.XA patent/CN110158640A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010019050A1 (en) * | 2008-08-14 | 2010-02-18 | Dr. Techn. Olav Olsen As | Foundation for an offshore wind turbine generator and method of constructing and installing the foundation |
| CN102877482A (en) * | 2012-09-11 | 2013-01-16 | 天津大学 | Gravity type foundation structure and construction method thereof |
| US20150104259A1 (en) * | 2013-09-09 | 2015-04-16 | Fontain M. Johnson | Method of construction, installation, and deployment of an offshore wind turbine on a concrete tension leg platform |
| 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 |
| 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 |
| CN210562255U (en) * | 2019-06-12 | 2020-05-19 | 长江勘测规划设计研究有限责任公司 | Offshore wind power cylinder type foundation underwater construction structure |
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