CN108248783A - A kind of novel offshore wind power submersible buoyant foundation and its construction method - Google Patents
A kind of novel offshore wind power submersible buoyant foundation and its construction method Download PDFInfo
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- CN108248783A CN108248783A CN201810065146.2A CN201810065146A CN108248783A CN 108248783 A CN108248783 A CN 108248783A CN 201810065146 A CN201810065146 A CN 201810065146A CN 108248783 A CN108248783 A CN 108248783A
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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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- 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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- 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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Abstract
The invention belongs to offshore wind power foundation technical fields, disclose a kind of novel offshore wind power submersible buoyant foundation and its construction method, it is made of floating platform and anchoring system, floating platform includes column, buoyancy tank, tilts strut, and anchoring system includes lineal pool line, oblique mooring line and multiple anchoring units connected by beam element；The floating platform and anchoring system difference towage, anchoring unit that top blower fan tower barrel will be equipped with during construction sink and are embedded in seabed；Direct line pool line and oblique mooring line upper end pass through reserving hole channel and tilt 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 tensioning system waterborne, reduces the difficulty of underwater installation mooring line；Anchor foundation provides withdrawal resistance using ballast weight and frictional resistance, and passes through 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 fields, are to be related to a kind of novel offshore wind power submersible to float specifically
Formula basis and its construction method, stability is preferable, and construction and installation are convenient, and project cost and installation cost are low.
Background technology
The concept source on floatation type basis refers to that basis is not in direct contact with sea bed in deep-sea oil gas development platform, and leads to
It crosses anchor cable or hawser it is connected with seabed, makes Wind turbines that can be moved freely in a certain be relatively fixed in region, such basis
Research and development and demonstration phase are mostly in, but stronger to the adaptability of marine environment at present, the difficulty of construction compared with bed basis
It is smaller, O＆M cost is low, therefore has a good application prospect in terms of deep-sea wind-powered electricity generation is developed.
Compared with coastal waters, abyssal 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 effect such as sky, the technologies such as integrates to blower foundation, submarine cable, offshore platform and undoubtedly proposes
More harsh requirement.In view of technical difficulty and the factor of 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 types, TLP types and semisubmersible-type basis.Spar types basis
Water Plane is small, is influenced by wave load small, and suitable for the marine site that the depth of water is deeper, it is mobile inconvenient to install；TLP type foundation motion performances
Preferably, mooring uses tension tendon, and cost is higher, is limited greatly by the depth of water；Semisubmersible-type basis can transportation by driving towage, but larger waterline
Face makes it be influenced greatly 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.
Invention content
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 cost is higher provides a kind of novel offshore wind power submersible 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 following technical solution：
A kind of novel offshore wind power submersible buoyant foundation, is made of floating platform and anchoring system；
It is the column of hollow-core construction that the floating platform, which includes, buoyancy tank, tilts strut, and the upper end of the column is used to connect
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 circumferential inner panel being connected with the column；It is set inside the buoyancy tank
There are radial direction 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；Preformed hole is provided on per pass radial direction subdivision plate
Road, the quantity of the reserving hole channel is identical with the inclination strut and is correspondingly connected with simultaneously phase one by one with the inclination strut lower end
Logical, the inclination strut upper end is connected with the column；
The anchoring system includes anchor foundation and multigroup mooring line；The anchor foundation includes multiple anchoring units, phase
It is connected between adjacent anchoring unit by beam element；The mooring line group number, multiple anchoring units quantity with it is described
The quantity of reserving hole channel is identical, and each anchoring unit it is corresponding be arranged on each reserving hole channel just under
Side；Each anchoring unit includes anchoring plate body, and anchoring plate body upper edge edge is provided with barrel, lower edges setting cylinder
Skirt；Per system, pool line is connected between the corresponding reserving hole channel and the anchoring unit, and per system, pool line includes one
Direct line pool line and an oblique mooring line, the lineal pool line are single in the corresponding reserving hole channel of system pool line and the anchoring
Be vertically arranged between member, the oblique mooring line the system moor between the corresponding reserving hole channel of line and the anchoring unit by
Setting is inclined outwardly under；The lineal pool line of mooring line described in every group and oblique mooring line lower end are anchored in the same anchoring
Unit, upper end both pass through the reserving hole channel corresponding to the anchoring unit, and the inclination connected by the reserving hole channel
Strut is worn to column inside and is anchored in the column.
Preferably, the reserving hole channel is smoothly connected with the inclination strut with radian.
Preferably, the anchoring plate body of each anchoring unit is rectangle, the beam of each anchoring unit
Unit is made of two horizontal cross bars.
Preferably, the group number of the mooring line is 3-8 groups.
Preferably, the oblique mooring line of multigroup mooring line and the angle all same of vertical direction, and the oblique system
The angle for mooring line and vertical direction is 3 °~60 °.
Preferably, the oblique mooring line and the lineal pool line upper end are both 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 wrapped up using gum sleeve.
A kind of construction method of the novel offshore wind power submersible buoyant foundation, 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, 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 marine site,
Anchoring system towage is transported to operation marine site simultaneously, the lineal pool line and the oblique mooring line upper end are both provided with buoy
Ball；
(2) applying ballast makes the anchor foundation sink, and pass through preloading and inside and outside differential pressure and be embedded in the anchor foundation
Seabed is fixed；
(3) the lineal pool line and the oblique mooring line upper end are sequentially passed through according to buoy ball indicating positions described reserved
Duct and the inclination strut, to the lineal pre- tensioning for mooring line and the oblique mooring line progress 10%~50% to balance
The buoyancy of floating platform is stated, the lineal pool line and the oblique mooring line is made to be in tensioning state；
(4) valve system replaced by aqueous vapor makes to be equipped with top wind turbine tower to the buoyancy tank inside points cabin water filling
The floating platform of cylinder loses part buoyancy, when sinking down into designed draft position, to the lineal pool line and it is described tiltedly
Mooring line completes the pre- tensioning of residue 50%~90% to balance the buoyancy of the floating platform, and the direct line is moored line and institute
It states oblique mooring line upper end and is anchored in the column；
(5) water body in the buoyancy tank inside points cabin is discharged by the valve system that aqueous vapor is replaced；
(6) the lineal pool line and the oblique mooring tape are entered into the reserving hole channel and the water body for tilting strut leads to
It crosses high pressure and inflates discharge, and seal the buoyancy tank bottom；
(7) position of centre of gravity of novel offshore wind power submersible buoyant foundation is adjusted by the buoyancy tank inside points cabin.
The beneficial effects of the invention are as follows：
(1) novel offshore wind power submersible buoyant foundation of the invention 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 by big Water Plane buoyancy tank,
Wind turbine 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, ensures basic stabilization
Property.
(2) direct line is moored line by novel offshore wind power submersible buoyant foundation of the invention and its construction method, anchoring system
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, and stability is good；Direct line pool line and the anchoring of oblique mooring line upper end
In column, tensioning system waterborne is realized, reduce the difficulty of underwater installation mooring line, it is easy for construction；Direct line pool line and oblique mooring line
Using steel strand wires material, good economy performance.
(3) novel offshore wind power submersible buoyant foundation of the invention and its construction method, the anchor foundation of anchoring system
The frictional resistance provided using ballast weight and skirtboard provides withdrawal resistance, and for lineal pool line and the positioning of oblique mooring line, anchor foundation is
Top can fill the structure of sand ballast, lower bands skirtboard, larger 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.
Description of the drawings
Fig. 1 is the dimensional structure diagram of novel offshore wind power submersible buoyant foundation provided by the present invention；
Fig. 2 is the mooring line distribution schematic diagram of novel offshore wind power submersible buoyant foundation provided by the present invention；
Fig. 3 is the front view of novel offshore wind power submersible buoyant foundation provided by the present invention；
Fig. 4 is the vertical view of novel offshore wind power submersible buoyant foundation provided by the present invention.
In figure：1st, column, 2, tilt strut, 3, buoyancy tank, 4, lineal pool line, 5, oblique mooring line, 6, anchoring unit, 7, reserved
Duct, 8, radial direction subdivision plate, 9, circumferential subdivision plate, 10, circumferential inner panel, 11, beam element.
Specific embodiment
For that can further appreciate that invention content, feature and the effect of the present invention, the following examples are hereby given, and coordinates attached drawing
Detailed description are as follows：
Show as shown in Figure 1 to Figure 4, present embodiment discloses a kind of novel offshore wind power submersible buoyant foundation, by floating platform and
Anchoring system forms.
Floating platform includes column 1, tilts strut 2, buoyancy tank 3, and 1 upper end of column is connected by flange with blower fan tower barrel, stands
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 wind turbine 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 selects steel construction, concrete knot with buoyancy tank 3
The material of structure or other lighter weights can carry larger 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-wind turbine 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 during state in place
The influence of load.It tilts that strut 2 is inclined is connected between column 1 and buoyancy tank 3, strengthens the connection knot of column 1 and buoyancy tank 3 with this
Structure, and provide horizontal and vertical bearing capacity 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 circumferential inner panel 10 of a diameter of 8m, and circumferential inner panel 10 is connected with column 1, diameter and 1 diameter phase of column
Together.Buoyancy tank 3 is internally provided with the radial direction subdivision plates 8 of four radial equipartitions circumferential subdivision plate 9, radial direction subdivision plate 8 and ring with together with
Inside and outside each four subdivision rooms of two circles will be divided into inside buoyancy tank 3 to subdivision plate 9, and each subdivision room is equipped with and can carry out aqueous vapor and put
The valve system changed, buoyancy tank 3 can ensure basic towage stability by each subdivision room plus Water Ballast center-of-gravity regulating position.Per pass
There are one reserving hole channel 7, four reserving hole channels 7 tilt 2 phases of strut with four respectively for same position setting on radial direction subdivision plate 8
Connection.Reserving hole channel 7 is smoothly connected with tilting strut 2 with certain radian, and stress concentration during mooring line tensioning stress is avoided to lead
Mooring line is caused to be damaged, influences system worked well.Reserving hole channel 7 can prevent mooring line from being contacted with water, ensure mooring anchor point not
It is damaged.
Inclination strut 2 be hollow long column shape structure, a diameter of 2m.Four tilt struts 2 it is circumferentially uniformly distributed be arranged on it 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, which is fixed, to be connected
It is connected to the outer position in 3 upper surface of buoyancy tank and is connected with reserving hole channel 7.
Anchoring system includes anchor foundation and four systems pool line.
Anchor foundation includes being separately positioned on four anchoring units 6 immediately below four reserving hole channels 7, adjacent anchoring unit
It is connected between 6 by beam element 11.Each anchoring unit 6 includes the square anchoring plate body of length of side 12.5m, on the anchoring plate body
Portion edge is provided with the square barrel that height is 2m, lower edges are provided with the square skirtboard that height is 5m.Adjacent anchoring
The centre-to-centre spacing of unit 6 is 16m, and the beam element 11 connected between anchoring unit 6 is made of the horizontal cross bar of two a diameter of 1m.Often
A anchoring unit 6 moors the anchor point of line (including a lineal pool line 4 and an oblique mooring line 5) lower end for one system of offer,
It, which anchors the superstructure that plate body is formed with barrel, can fill sand ballast, and skirtboard passes through ballast weight and inside and outside differential pressure injection sea bed.Anchor
Gu basis can be provided by preloading and inside and outside differential pressure injection sea bed, anchor foundation using the frictional resistance that ballast weight and skirtboard provide
Withdrawal resistance moors line positioning for four systems.
Four systems pool line be connected to buoyancy tank 3 four reserving hole channels 7 and anchor foundation four anchoring units 6 it
Between, per system, pool line includes a lineal pool line 4 and an oblique mooring line 5, and direct line pool line 4 is corresponding reserved in system pool line
It is vertically arranged between duct 7 and anchoring unit 6, oblique mooring line 5 is in the corresponding reserving hole channel 7 of system pool line and anchoring unit 6
Between be from top to bottom inclined outwardly setting (being interior using 3 center position of buoyancy tank, 3 wall direction of buoyancy tank is outer).Four systems pool line
The angle all same of oblique mooring line 5 and vertical direction, in the range of 3 °~60 °.The lineal pool line 4 of pool line and oblique mooring per system
5 lower end of line is anchored in the same anchoring unit 6 of anchor foundation, and upper end both passes through the reserving hole channel corresponding to the anchoring unit 6
7, and worn by the inclination strut 2 that the reserving hole channel 7 is connected to column 1, finally it is anchored in 1 side wall inner surfaces of column.By
This, four lineal pool lines 4 and four oblique mooring lines 5 form tensioning system waterborne, reduce the difficulty of underwater installation mooring line.It is lineal
Pool line 4 provides good heaving and rotating property, and oblique mooring line 5 provides larger horizontal restraint power, and radiates from bottom to up
Inside design, which is reduced, occupies sea bed area, reduces and seafloor structure collision phenomenon.Direct line pool line 4 and oblique mooring line 5 it is straight
Diameter is 167mm, and steel strand wires, polyester fiber line etc. can be used；Upper end is both provided with buoy ball before anchoring, it is facilitated to pass through pre-
Box out 7；Each anchor point after anchoring is equipped with maintenance device.
It is wrapped up outside direct line pool line 4 and oblique mooring line 5 using gum sleeve, avoids its corrosion failure in the seawater.
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 smaller motor imagination, good dynamic so as to show
Power performance thus greatly reduces the design requirement to Wind turbines.
The construction method of above-mentioned novel offshore wind power submersible buoyant foundation, carries out in accordance with the following steps：
(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 marine site, provided using the buoyancy tank 3 of big Water Plane
Floating stability realizes floating platform-tower-wind turbine entirety transportation by driving towage；Anchoring system towage is transported to operation marine site simultaneously, directly
Mooring line 4 and oblique 5 upper end of mooring line are both provided with buoy ball；
(2) be equipped with top blower fan tower barrel the floating platform and the anchoring system towage is transported to making the sea of retribution respectively
Behind domain, applying ballast makes the anchor foundation in the anchoring system sink, by preloading and inside and outside differential pressure by anchor foundation
Embedded seabed is fixed；
(3) four lineal pool lines 4 and four oblique 5 upper ends of mooring line are sequentially passed through into preformed hole according to buoy ball indicating positions
Road 7 and inclination strut 2, carry out lineal pool line 4 and oblique mooring line 5 the pre- tensioning of certain proportion (10%~50%), with balance
The buoyancy of floating platform makes lineal pool line 4 and oblique mooring line 5 be in tensioning state；
(4) inner ring subdivision room water filling of the valve system replaced by aqueous vapor to buoyancy tank 3, makes to be equipped with top blower fan tower barrel
Floating platform lose part buoyancy, the outer ring subdivision room air of buoyancy tank 3 is supplied to basic certain in sinking watching
Buoyancy ensures 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 line 4 and oblique 5 upper end of mooring line are anchored in 1 side wall inner surfaces of column；
(5) water body in 3 inner ring subdivision room of buoyancy tank by the valve system that aqueous vapor is replaced is discharged, ensures that offshore wind farm floats
Formula basis has certain floating stability；
(6) lineal pool line 4 and oblique mooring line 5 are brought into reserving hole channel 7 and tilts the water body of strut 2 row is inflated by high pressure
Go out, 3 bottom of sealing buoyancy tank, ensure that the second reserving hole channel 7, the first reserving hole channel 8 and inclination strut 2 are in drying regime；
(7) after position, the center of gravity position of offshore wind farm buoyant foundation is adjusted by the outer ring subdivision room water filling to buoyancy tank 3
It puts, ensures 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 in upper
The specific embodiment stated, above-mentioned specific embodiment is only schematical, be not it is restricted, this field it is common
Technical staff is not departing from present inventive concept and scope of the claimed protection, may be used also under the enlightenment of the present invention
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 (8)
1. a kind of novel offshore wind power submersible buoyant foundation, which is characterized in that be made of floating platform and anchoring system；
It is the column of hollow-core construction that the floating platform, which includes, buoyancy tank, tilts strut, and the upper end of the column is used to connect wind turbine
Tower, the column lower end are fixedly connected with the buoyancy tank, and more circumferential directions are connected between the column and the buoyancy tank and are evenly distributed with
Inclination strut；The buoyancy tank is provided centrally with the circumferential inner panel being connected with the column；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；Reserving hole channel is provided on per pass radial direction subdivision plate, institute
It is identical with the inclination strut and be correspondingly connected with and communicate one by one with the inclination strut lower end to state the quantity of reserving hole channel, it is described
Strut upper end is tilted with the column to be connected；
The anchoring system includes anchor foundation and multigroup mooring line；The anchor foundation includes multiple anchoring units, adjacent anchor
Gu it is connected between unit by beam element；The group number of the mooring line, the quantity of multiple anchoring units are reserved with described
The quantity in duct is identical, and each corresponding underface for being arranged on each reserving hole channel of the anchoring unit；Often
A anchoring unit includes anchoring plate body, and anchoring plate body upper edge edge is provided with barrel, lower edges setting sheath skirt；Every group
Mooring line is connected between the corresponding reserving hole channel and the anchoring unit, and per system, pool line includes a lineal pool line
With an oblique mooring line, the lineal pool line is moored in the system to be erected between the corresponding reserving hole channel of line and the anchoring unit
Straight setting, the oblique mooring line the system moor between the corresponding reserving hole channel of line and the anchoring unit from top to bottom to
Outer incline is set；The lineal pool line of mooring line described in every group and oblique mooring line lower end are anchored in the same anchoring unit, on
End both passes through the reserving hole channel corresponding to the anchoring unit, and by the inclination strut that the reserving hole channel is connected wear to
The column inside is simultaneously anchored in the column.
A kind of 2. novel offshore wind power submersible buoyant foundation according to claim 1, which is characterized in that the reserving hole channel
Smoothly connected with radian with the inclination strut.
A kind of 3. novel offshore wind power submersible buoyant foundation according to claim 1, which is characterized in that each anchoring
The anchoring plate body of unit is rectangle, and the beam element of each anchoring unit is made of two horizontal cross bars.
4. a kind of novel offshore wind power submersible buoyant foundation according to claim 1, which is characterized in that the mooring line
Group number is 3-8 groups.
A kind of 5. novel offshore wind power submersible buoyant foundation according to claim 1, which is characterized in that multigroup mooring
The oblique mooring line of line and the angle all same of vertical direction, and the angle of the oblique mooring line and vertical direction be 3 °~
60°。
A kind of 6. novel offshore wind power submersible buoyant foundation according to claim 1, which is characterized in that the oblique mooring line
Buoy ball is both provided with before anchoring with the lineal pool line upper end, each anchor point after anchoring is equipped with maintenance device.
A kind of 7. novel offshore wind power submersible buoyant foundation according to claim 1, which is characterized in that the oblique mooring line
It is wrapped up with the exposed parts of the lineal pool line using gum sleeve.
8. a kind of construction method of offshore wind power submersible buoyant foundation novel as described in any one of claim 1-7, feature
It is, 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 top blower fan tower barrel described
It installs and stablizes on floating platform, the floating platform towage for being equipped with top blower fan tower barrel is transported to operation marine site, simultaneously
Anchoring system towage is transported to operation marine site, the lineal pool line and the oblique mooring line upper end are both provided with buoy ball；
(2) applying ballast makes the anchor foundation sink, and passes through preloading and inside and outside differential pressure and the anchor foundation is embedded in seabed
It is fixed；
(3) the lineal pool line and the oblique mooring line upper end are sequentially passed through into the reserving hole channel according to buoy ball indicating positions
With the inclination strut, it is described floating to balance that 10%~50% pre- tensioning is carried out to the lineal pool line and the oblique mooring line
The buoyancy of formula platform makes the lineal pool line and the oblique mooring line be in tensioning state；
(4) valve system replaced by aqueous vapor makes to be equipped with top blower fan tower barrel to the buoyancy tank inside points cabin water filling
The floating platform loses part buoyancy and sinks, when sinking down into designed draft position, to the lineal pool line and the oblique mooring
Line completes the pre- tensioning of residue 50%~90% to balance the buoyancy of the floating platform, and by it is described it is lineal moor line and it is described tiltedly
Mooring line upper end is anchored in the column；
(5) water body in the buoyancy tank inside points cabin is discharged by the valve system that aqueous vapor is replaced；
(6) the lineal pool line and the oblique mooring tape are entered into the reserving hole channel and the water body for tilting strut passes through height
Pressure inflates discharge, and seals the buoyancy tank bottom；
(7) position of centre of gravity of novel offshore wind power submersible buoyant foundation is adjusted by the buoyancy tank inside points cabin.
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| CN201810065146.2A CN108248783B (en) | 2018-01-23 | 2018-01-23 | construction method of offshore wind power submersible floating foundation |
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| CN201810065146.2A CN108248783B (en) | 2018-01-23 | 2018-01-23 | construction method of offshore wind power submersible floating foundation |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808568A (en) * | 2018-08-02 | 2018-11-13 | 江苏海上龙源风力发电有限公司 | A kind of offshore wind turbine buoyant foundation output dynamic extra large cable mounting process |
| CN110758662A (en) * | 2019-11-14 | 2020-02-07 | 江苏科技大学 | Movable free-rising and sinking storm platform |
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| CN110758662A (en) * | 2019-11-14 | 2020-02-07 | 江苏科技大学 | Movable free-rising and sinking storm platform |
| CN112027006A (en) * | 2020-08-21 | 2020-12-04 | 山东电力工程咨询院有限公司 | Floating type renewable energy and offshore pasture integrated platform |
| CN112177859A (en) * | 2020-09-08 | 2021-01-05 | 上海交通大学 | Cylindrical floating type fan platform with moon pool |
| CN114348198A (en) * | 2022-01-13 | 2022-04-15 | 东北石油大学 | Fabricated FRP concrete combined guyed tower type small displacement platform and construction method thereof |
| CN114537604A (en) * | 2022-01-13 | 2022-05-27 | 东北石油大学 | Anchor-pull type foundation platform of assembled FRP concrete combined traction cable tower and construction method thereof |
| CN114537604B (en) * | 2022-01-13 | 2023-12-22 | 东北石油大学 | Anchor-pulling type foundation platform of assembled FRP concrete combined rope pulling tower and construction method thereof |
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