CN108407986B - It is a kind of can transportation by driving offshore wind farm buoyant foundation and its construction method - Google Patents
It is a kind of can transportation by driving offshore wind farm buoyant foundation and its construction method Download PDFInfo
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- CN108407986B CN108407986B CN201810064082.4A CN201810064082A CN108407986B CN 108407986 B CN108407986 B CN 108407986B CN 201810064082 A CN201810064082 A CN 201810064082A CN 108407986 B CN108407986 B CN 108407986B
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- buoyancy tank
- mooring line
- reserving hole
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B2021/505—Methods for installation or mooring of floating offshore platforms on site
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
Abstract
The invention belongs to offshore wind power foundation technical fields, disclose it is a kind of can transportation by driving offshore wind farm buoyant foundation and its construction method, it is made of floating platform and anchoring system, floating platform includes column, buoyancy tank, inclination strut, and anchoring system includes oblique mooring line, lineal pool line and anchor foundation；The floating platform for being equipped with top blower fan tower barrel and anchoring system are distinguished into towage when construction, anchor foundation sinks and is embedded in seabed；The first reserving hole channel is protruded into oblique mooring line upper end, lineal pool line upper end passes through the second reserving hole channel and inclination strut, and oblique mooring line and lineal pool line anchor afterwards in place in floating platform sinking.The present invention is capable of providing stability floating enough in towage, and when state in place is influenced small by wave load；It realizes layering tensioning system waterborne, reduces the difficulty of underwater installation mooring line；Anchor foundation provides withdrawal resistance using ballast weight and frictional resistance, and by preloading and inside and outside differential pressure injection sea bed, easy for construction.
Description
Technical field
The invention belongs to offshore wind power foundation technical field, in particular to it is a kind of can transportation by driving offshore wind farm it is floating
Formula basis and its construction method, stability is preferable, and construction and installation are convenient, and project cost and installation cost are low.
Background technique
The concept source on floatation type basis refers to that basis does not contact directly with sea bed in deep-sea oil gas development platform, and leads to
It crosses anchor cable or hawser and it is connected with seabed, move freely Wind turbines can in a certain relatively fixed region, such basis
Research and development and demonstration phase are mostly at present, but, with bed basis compared with difficulty of construction stronger to the adaptability of marine environment
It is smaller, O&M cost is low, therefore have a good application prospect in terms of developing deep-sea wind-powered electricity generation.
Compared with coastal waters, deep-marine-environment is more severe, there is a variety of hydrology phenomenons such as ocean current, wave, tide, interior wave with
And burn into washes away, washes in a pan the long-term physical and chemical effects such as sky, the technologies such as integrated to blower foundation, submarine cable, offshore platform undoubtedly propose
More harsh requirement.In view of the factor of technical difficulty and construction cost, fixed basis is no longer applicable in, deep-sea wind power plant
Mainly use buoyant foundation.
The broad form of existing offshore wind farm buoyant foundation has: Spar type, TLP type and semisubmersible-type basis.Spar type basis
Water Plane is small, and small, deeper suitable for depth of water sea area is influenced by wave load, and it is mobile inconvenient to install；TLP type foundation motion performance
Preferably, mooring uses tension tendon, and higher cost is limited greatly by the depth of water；Semisubmersible-type basis can transportation by driving towage, but biggish waterline
Face influences it by wave load, and stability is poor.Above-mentioned base form each own difference in terms of stability and economy
The drawbacks of, and three kinds of foundation pattern mooring lines are both needed to install under water, difficulty of construction is larger.
Summary of the invention
The present invention is to solve offshore wind farm buoyant foundation motor imagination under stormy waves load is larger and underwater construction
The technical issues of process complexity higher cost, provide it is a kind of can transportation by driving offshore wind farm buoyant foundation and its construction method, should
Base form Water Plane is smaller, and stability is good, and construction and installation are convenient, and installation cost is low, can make offshore wind farm buoyant foundation more
Good is applied to Practical Project.
In order to solve the above-mentioned technical problem, the present invention is achieved by technical solution below:
It is a kind of can transportation by driving offshore wind farm buoyant foundation, be made of floating platform and anchoring system；
The floating platform includes the column for being hollow structure, buoyancy tank, inclination strut, and the upper end of the column is for connecting
Blower fan tower barrel, the column lower end are fixedly connected with the buoyancy tank, and more circumferential directions are connected between the column and the buoyancy tank
Uniformly distributed inclination strut；The buoyancy tank is provided centrally with the first reserving hole channel being connected with the column, and described first is reserved
Duct is internally provided with circumferential inner panel, and the circumferential direction inner panel is fixedly connected with the bottom plate of the buoyancy tank；Setting inside the buoyancy tank
There are radial subdivision plate and circumferential subdivision plate, the radial direction subdivision plate and the circumferential subdivision plate will divide multiple inside the buoyancy tank
Subdivision room, each subdivision room are equipped with the valve system that can carry out aqueous vapor displacement；It is pre- that second is provided on per pass radial direction subdivision plate
It boxes out, the quantity of second reserving hole channel is identical as the inclination strut and correspondence connects one by one with the inclination strut lower end
It connects and communicates, the inclination strut upper end is connected with the column；
The anchoring system includes oblique mooring line, lineal pool line and anchor foundation, and the oblique mooring line and the direct line are moored
Line lower end is anchored in the anchor foundation；The more oblique mooring lines are inclined at externally to center described from the bottom to top
Between anchor foundation and the buoyancy tank, first reserving hole channel inside the buoyancy tank and anchor are protruded into the oblique mooring line upper end
It is fixed in the circumferential inner panel；The more lineal pool lines are vertically arranged between the anchor foundation and the buoyancy tank, described straight
The quantity of mooring line is identical as second reserving hole channel and the inclination quantity of strut, and the upper end is each passed through the buoyancy tank
Internal second reserving hole channel, and worn by the inclination strut to the column inside and be anchored in the column；It is described
Anchor foundation includes anchoring plate body, which is provided with barrel, lower edges setting sheath skirt.
Preferably, second reserving hole channel is smoothly connected with the inclination strut with radian.
Preferably, the quantity of the lineal pool line is 3-8 root, and the quantity of the oblique mooring line is the 2 of the lineal pool line
Times.
Preferably, the angle of the oblique mooring line and vertical direction is 3 °~60 °.
Preferably, the oblique mooring line and the lineal pool line upper end are provided with buoy ball before anchoring, after anchoring
Each anchor point is equipped with maintenance device.
Preferably, the exposed parts of the oblique mooring line and the lineal pool line are all made of gum sleeve package.
It is a kind of it is described can transportation by driving offshore wind farm buoyant foundation construction method, carry out in accordance with the following steps:
(1) first by the floating platform and the anchoring system respectively in the prefabricated completion in land, top blower fan tower barrel is existed
It installs and stablizes on the floating platform, the floating platform towage for being equipped with top blower fan tower barrel is transported to operation sea area,
Anchoring system towage is transported to operation sea area simultaneously, the lineal pool line and the oblique mooring line upper end are provided with buoy
Ball；
(2) applying ballast makes the anchor foundation sink, and is embedded in the anchor foundation by preloading and inside and outside differential pressure
Seabed is fixed；
(3) first reserving hole channel is protruded into the oblique mooring line upper end according to buoy ball indicating positions, while according to
The lineal pool line upper end is sequentially passed through second reserving hole channel and the inclination strut by the buoy ball indicating positions, right
The oblique mooring line and the lineal pool line carry out 10%~50% pre- tensioning to balance the buoyancy of the floating platform, make institute
It states oblique mooring line and the lineal pool line is in tensioning state；
(4) it is filled the water by the valve system that aqueous vapor is replaced to buoyancy tank inner part cabin, makes that top blower tower is installed
The floating platform of cylinder loses the sinking of part buoyancy, when sinking down into designed draft position, to the oblique mooring line and described straight
Mooring line completes the pre- tensioning of residue 50%~90% to balance the buoyancy of the floating platform, and by the oblique mooring line upper end
It is anchored in the circumferential inner panel, the lineal pool line upper end is anchored in the column；
(5) water body in buoyancy tank inner part cabin is discharged by the valve system that aqueous vapor is replaced；
(6) the oblique mooring tape is entered to the water body in first reserving hole channel, the lineal pool tape enters described the
The water body of two reserving hole channels and the inclination strut inflates discharge by high pressure, and seals the buoyancy tank bottom；
(7) position of centre of gravity of offshore wind farm buoyant foundation is adjusted by buoyancy tank inner part cabin.
The beneficial effects of the present invention are:
(1) it is of the invention can transportation by driving offshore wind farm buoyant foundation and its construction method, floating platform is by small-waterplane-area
Column and the buoyancy tank of big Water Plane combine design, it is ensured that basis provides stability floating enough in towage Shi You great Water Plane buoyancy tank,
Blower state buoyancy tank in place is dived beneath the water simultaneously, and the column of the small line water surface is influenced small by wave load, guarantees basic stabilization
Property.
(2) it is of the invention can transportation by driving offshore wind farm buoyant foundation and its construction method, anchoring system direct line is moored into line
It closes and designs with oblique mooring knot, provide preferable heaving and rotating property by direct line pool line, skewed mooring line provides larger
Horizontal direction restraining force, so that basis is small in the motor imagination of all directions, stability is good；Direct line pool line upper end is anchored in column, tiltedly
Buoyancy tank inner panel is fixed in mooring line upper end, realizes layering tensioning system waterborne, reduces the difficulty of underwater installation mooring line, construction party
Just；Direct line pool line and oblique mooring line use steel strand wires material, good economy performance.
(3) it is of the invention can transportation by driving offshore wind farm buoyant foundation and its construction method, the anchor foundation of anchoring system
Withdrawal resistance is provided using the frictional resistance that ballast weight and sheath skirt provide, for lineal pool line and the positioning of oblique mooring line, anchor foundation is
Top can fill the structure of sand ballast, lower bands sheath skirt, biggish Water Plane make its can towage to operation waters, and preloading can be passed through
It is easy for construction with inside and outside differential pressure injection sea bed.
Detailed description of the invention
Fig. 1 is the schematic perspective view of offshore wind farm buoyant foundation provided by the present invention；
Fig. 2 is the mooring line distribution schematic diagram of offshore wind farm buoyant foundation provided by the present invention；
Fig. 3 is the main view of offshore wind farm buoyant foundation provided by the present invention；
Fig. 4 is the top view of offshore wind farm buoyant foundation provided by the present invention.
In figure: 1, column, 2, inclination strut, 3, buoyancy tank, 4, lineal pool line, 5, oblique mooring line, 6, anchor foundation, 7, second
Reserving hole channel, the 8, first reserving hole channel, 9, radial subdivision plate, 10, circumferential subdivision plate, 11, circumferential inner panel.
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:
Show as shown in Figure 1 to Figure 4, present embodiment discloses it is a kind of can transportation by driving offshore wind farm buoyant foundation, by floating platform and
Anchoring system composition.
Floating platform includes column 1, inclination strut 2, buoyancy tank 3, and 1 upper end of column is connected with blower fan tower barrel by flange, is stood
1 lower end of column is fixedly connected with buoyancy tank 3, and more circumferentially uniformly distributed inclination struts 2 are provided between column 1 and buoyancy tank 3.In view of sea
The cabin of upper fan and the weight of blade it is larger and more than the water surface 80~100m, to make blower normal power generation, it is necessary to assure base
Stability of the plinth under stormy waves synergy and the ability for resisting storm load.Column 1 and buoyancy tank 3 select steel construction, concrete knot
The material of structure or other lighter weights can carry biggish wind-powered electricity generation load.3 phase knot of small-waterplane-area column 1 and big Water Plane buoyancy tank
The design of conjunction provides stability floating enough by big Water Plane buoyancy tank 3 and realizes floating platform-tower-blower entirety transportation by driving towage, installation
Convenient transportation；And buoyancy tank 3 slips into the water surface hereinafter, the column 1 of small-waterplane-area is located on the water surface, to reduce wave lotus when state in place
The influence of load.Strut 2 is inclined is connected between column 1 and buoyancy tank 3 for inclination, reinforces the connection knot of column 1 and buoyancy tank 3 with this
Structure, and horizontal and vertical bearing capacity is provided for top wind-powered electricity generation structure.
Column 1 is the cylinder-like structure with cavity, and a diameter of 8m is highly 20m, wall thickness 50mm.
Buoyancy tank 3 is the flat cylindrical-shaped structure with cavity, and a diameter of 33m is highly 10m, wall thickness 15mm.Buoyancy tank
3 are provided centrally with the first reserving hole channel 8 that diameter is 8m, and the first reserving hole channel 8 is connected with column 1, and diameter and column 1 are straight
Diameter is identical.First reserving hole channel 8 is internally provided with the circumferential inner panel 11 that a loop diameter is 6m, wall thickness is 30mm, circumferential inner panel 11
It is fixedly connected with 3 bottom plate of buoyancy tank, for fixing oblique mooring line 5.Buoyancy tank 3 is internally provided with the radial subdivision plate of four radial equipartitions
9 with together with circumferential subdivision plate 10, radial subdivision plate 9 and circumferential subdivision plate 10 inside and outside each four, two circles will be divided into inside buoyancy tank 3
Subdivision room, each subdivision room are equipped with the valve system that can carry out aqueous vapor displacement, and buoyancy tank 3 can be by adding Water Ballast in each subdivision room
Center-of-gravity regulating position guarantees basic towage stability.Same position on per pass radial direction subdivision plate 9 is provided with second preformed hole
Road 7, four the second reserving hole channels 7 are connected with four inclination struts 2 respectively.Second reserving hole channel 7 is with inclination strut 2 with certain
Radian smoothly connect, avoid when mooring line tensioning stress stress concentration from causing mooring line impaired, influence system worked well.The
Two reserving hole channels 7 and the first reserving hole channel 8 can prevent mooring line from contacting with water, guarantee that mooring anchor point is not damaged.
Inclination strut 2 is hollow long column shape structure, a diameter of 2m.The circumferentially uniformly distributed setting of four inclination struts 2 is vertical
Around column 1, the upper end of every inclination strut 2 is fixedly connected on 1 sidewall upper of column and is connected with column 1, and lower end is fixed to be connected
It is connected to the outer position in 3 upper surface of buoyancy tank and is connected with the second reserving hole channel 7.
Anchoring system includes lineal pool line 4, oblique mooring line 5 and anchor foundation 6.
Four lineal pool lines 4 are vertically arranged between buoyancy tank 3 and anchor foundation 6, and eight oblique mooring lines 5 are in buoyancy tank 3 and anchor
Gu be from top to bottom obliquely installed from the outside portion in center is radial between basis 6, the angle of oblique mooring line 5 and vertical direction 3 °~
Within the scope of 60 °.Direct line pool line 4 and oblique 5 lower end of mooring line are anchored in anchor foundation 6.Four lineal pool 4 upper ends of line are each passed through
Four the second reserving hole channels 7 inside buoyancy tank 3, and worn by four inclination struts 2 to column 1, finally it is anchored in 1 side of column
Wall inner surface.Eight oblique 5 upper ends of mooring line are protruded into 8 inside of the first reserving hole channel and are anchored on circumferential inner panel 11.It is lineal as a result,
Pool line 4 and oblique mooring line 5 form layering tensioning system waterborne, reduce the difficulty of underwater installation mooring line.Direct line pool line 4 provides good
Good heaving and rotating property, oblique mooring line 5 provide biggish horizontal restraint power, and radiate centroclinal design and reduce
Sea bed area is occupied, is reduced and seafloor structure collision phenomenon.The diameter of direct line pool line 4 and oblique mooring line 5 is 167mm, can
Using steel strand wires, polyester fiber line etc.；Upper end is provided with buoy ball before anchoring, it is facilitated to pass through 7 He of the second reserving hole channel
First reserving hole channel 8；Each anchor point after anchoring is equipped with maintenance device.
It is all made of gum sleeve package outside direct line pool line 4 and oblique mooring line 5, avoids its corrosion failure in the seawater.
Anchor foundation 6 includes the round anchor plate body of diameter 40m, which is 2m's along height is provided with
Annular tube wall, lower edges are provided with the annular sheath skirt that height is 5m.Anchoring plate body is for providing lineal pool line 4 and oblique mooring line
The superstructure that the anchor point of 5 lower ends, anchoring plate body and barrel are constituted can fill sand ballast, and sheath skirt passes through ballast weight and inside and outside differential pressure
Injection sea bed.Anchor foundation 6 can be provided by preloading and inside and outside differential pressure injection sea bed, anchor foundation 6 using ballast weight and sheath skirt
Frictional resistance to provide withdrawal resistance be lineal pool line 4 and the positioning of oblique mooring line 5.
In this way, anchoring system can effectively control floating platform in heaving, surging, swaying, yawing, rolling, pitching
The movement of six-freedom degree, it is ensured that the offshore wind farm buoyant foundation has lesser motor imagination, to show good dynamic
Power performance thus greatly reduces the design requirement to Wind turbines.
It is above-mentioned can transportation by driving offshore wind farm buoyant foundation construction method, in accordance with the following steps carry out:
(1) first by floating platform and anchoring system respectively in the prefabricated completion in land, by top blower fan tower barrel in floating platform
Upper installation is stablized, and top blower fan tower barrel and floating platform towage are transported to operation sea area, is provided using the buoyancy tank 3 of big Water Plane
Floating stability realizes floating platform-tower-blower entirety transportation by driving towage；Anchoring system towage is transported to operation sea area simultaneously, directly
Mooring line 4 and oblique 5 upper end of mooring line are provided with buoy ball；
(2) floating platform and anchoring system for being equipped with top blower fan tower barrel are distinguished towage and are transported to operation sea area, apply
Pressurization, which carries, makes the anchor foundation 6 in anchoring system sink, and is fixed the insertion of anchor foundation 6 seabed by preloading and inside and outside differential pressure；
(3) four lineal pool 4 upper ends of line are sequentially passed through into the second reserving hole channel 7 according to buoy ball indicating positions and inclination is supportted
Bar 2, while protruding into eight oblique 5 upper ends of mooring line inside the first reserving hole channel 8 according to buoy ball indicating positions, line is moored to direct line
4 and oblique mooring line 5 carry out the pre- tensioning of certain proportion (10%~50%) and make lineal pool line 4 to balance the buoyancy of floating platform
Tensioning state is in oblique mooring line 5；
(4) it is filled the water by the valve system that aqueous vapor is replaced to the inner ring subdivision room of buoyancy tank 3, makes that top blower fan tower barrel is installed
Floating platform lose the sinking of part buoyancy, the outer ring subdivision room air of buoyancy tank 3 is supplied to basic certain in sinking watching
Buoyancy guarantees the stability of offshore wind farm buoyant foundation；When the floating platform sinks down into designed draft position, direct line pool line 4
Reach preset length with oblique mooring line 5, pre- of remaining proportion (50%~90%) is completed to lineal pool line 4 and oblique mooring line 5
It draws, to balance the buoyancy of floating platform；Direct line pool 4 upper end of line is anchored in 1 side wall inner surfaces of column, oblique 5 upper end anchor of mooring line
It is fixed in circumferential inner panel 11；
(5) water body in 3 inner ring subdivision room of buoyancy tank is discharged by the valve system that aqueous vapor is replaced, guarantees that offshore wind farm is floating
Formula basis has certain floating stability；
(6) water body, oblique mooring line 5 that lineal pool line 4 brings the second reserving hole channel 7 and inclination strut 2 into are brought into first in advance
The water body boxed out in 8 inflates discharge by high pressure, seals 3 bottom of buoyancy tank, guarantees the second reserving hole channel 7, the first reserving hole channel 8
Drying regime is in inclination strut 2；
(7) after position, the center of gravity position of offshore wind farm buoyant foundation is adjusted by filling the water to the outer ring subdivision room of buoyancy tank 3
It sets, guarantees offshore wind farm buoyant foundation safe and stable operation.
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 (6)
1. one kind can transportation by driving offshore wind farm buoyant foundation construction method, which is characterized in that its be directed to can transportation by driving sea
Wind-powered electricity generation buoyant foundation is made of floating platform and anchoring system；
The floating platform includes the column for being hollow structure, buoyancy tank, inclination strut, and the upper end of the column is for connecting blower
Tower, the column lower end are fixedly connected with the buoyancy tank, and it is uniformly distributed that more circumferential directions are connected between the column and the buoyancy tank
Inclination strut；The buoyancy tank is provided centrally with the first reserving hole channel being connected with the column, first reserving hole channel
It is internally provided with circumferential inner panel, the circumferential direction inner panel is fixedly connected with the bottom plate of the buoyancy tank；The buoyancy tank is internally provided with diameter
To subdivision plate and circumferential subdivision plate, the radial direction subdivision plate and the circumferential subdivision plate will divide multiple subdivisions inside the buoyancy tank
Room, each subdivision room are equipped with the valve system that can carry out aqueous vapor displacement；The second preformed hole is provided on per pass radial direction subdivision plate
Road, the quantity of second reserving hole channel is identical as the inclination strut and is correspondingly connected with one by one simultaneously with the inclination strut lower end
It communicates, the inclination strut upper end is connected with the column；
The anchoring system includes oblique mooring line, lineal pool line and anchor foundation, and the oblique mooring line and the direct line are moored under line
End is anchored in the anchor foundation；The more oblique mooring lines are inclined at the anchoring externally to center from the bottom to top
Basic first reserving hole channel that between the buoyancy tank, the oblique mooring line upper end is protruded into inside the buoyancy tank is simultaneously anchored in
The circumferential direction inner panel；The more lineal pool lines are vertically arranged between the anchor foundation and the buoyancy tank, the lineal pool
The quantity of line is identical as second reserving hole channel and the inclination quantity of strut, and the upper end is each passed through inside the buoyancy tank
Second reserving hole channel, and worn by the inclination strut to inside the column and being anchored in the column；The anchoring
Basis includes anchoring plate body, which is provided with barrel, lower edges setting sheath skirt；
The construction method carries out in accordance with the following steps:
(1) first by the floating platform and the anchoring system respectively in the prefabricated completion in land, by blower fan tower barrel in the floating
It installs and stablizes on platform, the floating platform towage for being equipped with blower fan tower barrel is transported to operation sea area, while by mooring system
System towage is transported to operation sea area, and the lineal pool line and the oblique mooring line upper end are provided with buoy ball；
(2) applying ballast makes the anchor foundation sink, and the anchor foundation is embedded in seabed by preloading and inside and outside differential pressure
It is fixed；
(3) first reserving hole channel is protruded into the oblique mooring line upper end according to buoy ball indicating positions, while according to described
The lineal pool line upper end is sequentially passed through second reserving hole channel and the inclination strut by buoy ball indicating positions, to described
Oblique mooring line and the lineal pool line carry out 10%~50% pre- tensioning to balance the buoyancy of the floating platform, make described oblique
Mooring line and the lineal pool line are in tensioning state；
(4) valve system replaced by aqueous vapor is filled the water to the subdivision room inside the buoyancy tank, makes the institute for being equipped with blower fan tower barrel
It states floating platform and loses the sinking of part buoyancy, when sinking down into designed draft position, to the oblique mooring line and the lineal pool line
The pre- tensioning of residue 50%~90% is completed to balance the buoyancy of the floating platform, and the oblique mooring line upper end is anchored in
The circumferential direction inner panel, the lineal pool line upper end are anchored in the column；
(5) water body in the subdivision room inside the buoyancy tank is discharged by the valve system that aqueous vapor is replaced；
(6) the oblique mooring tape is entered to the water body in first reserving hole channel, the lineal pool tape enters described second in advance
It boxes out and the water body of the inclination strut inflates discharge by high pressure, and seal the buoyancy tank bottom；
(7) position of centre of gravity of offshore wind farm buoyant foundation is adjusted by the subdivision room inside the buoyancy tank.
2. one kind according to claim 1 can transportation by driving offshore wind farm buoyant foundation construction method, which is characterized in that institute
It states the second reserving hole channel and is smoothly connected with the inclination strut with radian.
3. one kind according to claim 1 can transportation by driving offshore wind farm buoyant foundation construction method, which is characterized in that institute
The quantity for stating lineal pool line is 3-8 root, and the quantity of the oblique mooring line is 2 times of the lineal pool line.
4. one kind according to claim 1 can transportation by driving offshore wind farm buoyant foundation construction method, which is characterized in that institute
The angle for stating oblique mooring line and vertical direction is 3 °~60 °.
5. one kind according to claim 1 can transportation by driving offshore wind farm buoyant foundation construction method, which is characterized in that institute
It states oblique mooring line and the lineal pool line upper end is provided with buoy ball before anchoring, each anchor point after anchoring is equipped with dimension
Protection unit.
6. one kind according to claim 1 can transportation by driving offshore wind farm buoyant foundation construction method, which is characterized in that institute
The exposed parts for stating oblique mooring line and the lineal pool line are all made of gum sleeve package.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810064082.4A CN108407986B (en) | 2018-01-23 | 2018-01-23 | It is a kind of can transportation by driving offshore wind farm buoyant foundation and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810064082.4A CN108407986B (en) | 2018-01-23 | 2018-01-23 | It is a kind of can transportation by driving offshore wind farm buoyant foundation and its construction method |
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| CN108407986B true CN108407986B (en) | 2019-10-25 |
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|---|---|---|---|---|
| CN111469993B (en) * | 2020-03-17 | 2021-08-03 | 中国电建集团华东勘测设计研究院有限公司 | Self-installation floating type fan foundation anchored by bucket foundation and self-installation method |
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