CN108867684A - Offshore wind turbine gravity caisson basis and its installation method - Google Patents
Offshore wind turbine gravity caisson basis and its installation method Download PDFInfo
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- CN108867684A CN108867684A CN201810791356.XA CN201810791356A CN108867684A CN 108867684 A CN108867684 A CN 108867684A CN 201810791356 A CN201810791356 A CN 201810791356A CN 108867684 A CN108867684 A CN 108867684A
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- 230000005484 gravity Effects 0.000 title claims abstract description 53
- 238000009434 installation Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 21
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 20
- 239000011148 porous material Substances 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 16
- 239000004567 concrete Substances 0.000 claims abstract description 13
- 238000004873 anchoring Methods 0.000 claims abstract description 8
- 230000002787 reinforcement Effects 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000008267 milk Substances 0.000 claims description 3
- 210000004080 milk Anatomy 0.000 claims description 3
- 235000013336 milk Nutrition 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 2
- 238000010248 power generation Methods 0.000 abstract description 2
- 239000003653 coastal water Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Classifications
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/02—Caissons able to be floated on water and to be lowered into water in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- General Engineering & Computer Science (AREA)
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Abstract
The present invention relates to the offshore wind turbine gravity caisson basis of Oversea wind power generation engineering field and its installation methods.The gravity caisson basis includes cylinder caisson, cylinder piece housing, anti-ice cone and reinforces collar tie beam；Cylinder caisson is made of outer wall, floor, compartment and bottom plate, cylindrical section upper part of the housing is to reinforce collar tie beam and anti-ice wimble structure, prestressed pore passage is provided in shell, presstressed reinforcing steel penetrates prestressed pore passage, anchoring lower ends are in bottom plate, upper end, which is anchored in, to be reinforced in collar tie beam, and ballast filler is filled in cylinder caisson compartment, and entire gravity caisson basis is mounted on the sea bed face for being laid with blotter.The present invention uses concrete prefabricated caisset, post-stressed tensioning is carried out to cylinder piece housing, the strength and stiffness of gravity type foundation greatly improved, marine on-site installation work amount is small, construction time and expense are saved, can be applied to the coastal waters shallow overburden wind power plant of the multiple sea area of typhoon and large capacity Wind turbines.
Description
Technical field
The present invention relates to Oversea wind power generation engineering fields, more particularly, to a kind of marine wind turbine generator system base structure
And its installation method.
Background technique
China's marine wind electric field largely in the multiple sea area of typhoon, get over for construction by used wind power generating set power at present
Come bigger, load magnitude suffered by the multiple area's high-power wind-driven generator group of typhoon is huge, wants to the stiffness and strength on basis
Ask higher, the increase of blower single-machine capacity and the diversity of deepwater field sea bed geological conditions tie the basis of offshore wind farm unit
Configuration formula proposes new requirement and challenge.
Single-pile foundation is one of the main foundation pattern in marine wind turbine generator system base structure, but current single-pile foundation
The stake diameter of design is increasing, and steel consumption is big, and there are a wide range of shallow overburden rock foundations for China Fujian, Coastal Area of Guangdong Province
Sea bed, the embedding rock long construction period of large diameter steel pipe pile, at high cost, uncertain factor is big, and single-pile foundation is difficult to be applied.
Gravity type foundation is another main foundation pattern in marine wind turbine generator system base structure, it is relied primarily on
The tilting moment and sliding force that basis and ballast weight resistance top fan loads and external environment load generate, make basis and
Blower fan pylon structure remained stable.Gravity type foundation structure part is usually reinforced concrete structures, saves steel, economy effect
Fruit is good, is built using land fabrication mode, does not need marine guidance piling operation, and marine on-site installation work amount is small, when saving construction
Between and expense.
The gravity type foundation of domestic land wind power plant is constructed using poured in place concrete at present, and marine wind electric field is usual
Offshore farther out, the depth of water it is deeper, existing land gravity type foundation not can be used directly, and gravity type foundation all uses concrete meeting
Cause overall cost higher, and foundation structure weight is excessive, needs argosy machine equipment assistant conveyance.
Summary of the invention
In view of the above-mentioned problems existing in the prior art, the purpose of the present invention is at least that provide a kind of with applicable large capacity
Blower, easy construction, it is at low cost the advantages that offshore wind turbine gravity caisson basis and its installation method.
Basic technical scheme of the invention is：Cylinder piece housing is located at the top of concrete prefabricated cylinder caisson；Reinforce
Collar tie beam is located at the top of cylinder piece housing；Anti-ice cone is located at cylinder piece housing and reinforces collar tie beam intersection, and is located at cylindrical section shell
The periphery of body；Longitudinal prestressed pore passage is provided in cylinder piece housing；Presstressed reinforcing steel penetrates prestressed pore passage, anchoring lower ends in
In the bottom plate of cylinder caisson, upper end, which is anchored in, to be reinforced in collar tie beam.
Based on above-mentioned technical characteristic, the wall thickness for reinforcing collar tie beam is greater than the wall thickness of cylinder piece housing.
Based on above-mentioned technical characteristic, the fixing end anchorage of presstressed reinforcing steel is embedded in bottom plate；Reinforce being embedded with inside collar tie beam
The stretching end anchorage of prestressed bolt, annular anchor plate and presstressed reinforcing steel；Circle center of the prestressed bolt along annular anchor plate
Line is evenly arranged inside and outside two circle；By nut and blower fan tower barrel bottom flanged joint, lower end passes through nut for the upper end of prestressed bolt
It is connect with annular anchor plate, blower fan tower barrel bottom flange is fixed on the top for reinforcing collar tie beam；Stretching end anchorage is along annular anchor plate
Circumferential centerline is evenly arranged a circle, and is located at the centre of two circles inside and outside prestressed bolt, and presstressed reinforcing steel passes through prestressed bolt
It is anchored on annular anchor plate.
Based on above-mentioned technical characteristic, cylinder caisson includes outer wall, floor, compartment and bottom plate；Floor both ends respectively with extension
Cylinder piece housing in cylinder caisson is connected with outer wall, and several equally distributed compartments are divided into cylinder caisson；Compartment
Interior to be filled with ballast filler, top is covered with riprap protection layer.
Based on above-mentioned technical characteristic：Ballast filler is sandstone filler.
Based on above-mentioned technical characteristic：Anti-ice cone is inverted pyramidal structures, and cone generatrices and horizontal plane are in angle of 45 degrees.
Based on above-mentioned technical characteristic：Gravity caisson basis is mounted on the sea bed face for being laid with blotter, and gravity type is heavy
Riprap protection layer is equipped with around box foundation.
The present invention also provides a kind of installation methods on offshore wind turbine gravity caisson basis, including following step
Suddenly：
1) bottom plate of concreting cylinder caisson, and the pre-buried fixing end anchorage in bottom plate are utilized；
2) cylinder caisson, the cylinder piece housing positioned at cylinder caisson top, anti-ice cone are poured from lower to upper and reinforce collar tie beam,
And prestressed pore passage is reserved in cylinder piece housing；
3) prestressed bolt lower end is embedded in after being fixedly connected by nut with annular anchor plate and reinforces in collar tie beam；
4) by presstressed reinforcing steel anchoring lower ends on the fixing end anchorage in bottom plate, upper end be anchored in by stretching end anchorage plus
On annular anchor plate in strong collar tie beam, presstressed reinforcing steel upper end carries out stretching construction by stretching end anchorage；
5) it is in the milk after stretching construction to prestressed pore passage；
6) by gravity caisson basis whole Transporting to Attention problems position, water filling is carried out down in the compartment of cylinder caisson
It is heavy, it is mounted on the sea bed face for being laid with blotter；
7) ballast filler is filled in the compartment of cylinder caisson；
8) upper end of prestressed bolt passes through nut and the blower fan tower barrel bottom flanged joint for being located at stiffening ring back portion.
A kind of optimization as above-mentioned installation method：Can by adjust prestressed bolt upper end nut installation site,
Blower fan tower barrel bottom flange is leveled.Meet requirement of the blower fan tower barrel lifting to flange formation degree.
The beneficial effects of the invention are as follows：
1. the present invention uses concrete material compared with existing gravity type foundation structure, mixed especially with high intensity
Solidifying soil material premade shells structure, and post-stressed tensioning is carried out to shell, the strong of gravity type foundation greatly improved
Degree and rigidity, while the size and weight of gravity type foundation structure are significantly reduced, so that gravity type foundation can be applied to platform
The multiple sea area of wind and large capacity Wind turbines.
2. the present invention can be suitable for hard sand or rock foundation sea bed compared with existing large diameter single pile foundation,
Have many advantages, such as it is land build, without piling, operation on the sea amount is small, saving steel, reduces offshore construction time and expense.
3. blower fan tower barrel and basis top connection type use prestressed bolt interconnection technique, so that whole cross section stress begins
It is in pressured state eventually, effectively increases the fatigue life of concrete of connecting portion.
4. offshore wind turbine gravity caisson foundation structure is easily installed and removes, offshore construction is greatly reduced
Workload has both saved the duration, improves construction efficiency, and reduce project cost, has good economy.
Detailed description of the invention
Fig. 1 is shown as the structural representation on offshore wind turbine gravity caisson basis in one embodiment of the invention
Figure；
Fig. 2 is shown as the stiffening ring girder construction schematic diagram on the basis of gravity caisson shown in Fig. 1；
Fig. 3 is shown as the annular anchor plate structural schematic diagram on the basis of gravity caisson shown in Fig. 1；
Fig. 4 is shown as the A-A diagrammatic cross-section on the basis of gravity caisson shown in Fig. 1；
Fig. 5 is shown as the B-B diagrammatic cross-section on the basis of gravity caisson shown in Fig. 1.
Component label instructions
100 reinforce collar tie beam
200 prestressed bolts
210 blower fan tower barrel bottom flanges
220 nuts
300 anti-ices cone
400 cylinder piece housings
500 presstressed reinforcing steels
510 prestressed pore passages
520 annular anchor plates
530 stretching end anchorages
540 fixing end anchorages
600 cylinder caissons
610 outer walls
620 floors
630 compartments
640 bottom plates
700 ballast fillers
800 blotters
810 sea level
900 riprap protection layers
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
It should be clear that structure, ratio, size etc. depicted in this specification attached drawing, only to cooperate disclosed in specification
Content be not intended to limit the invention enforceable qualifications, therefore not so that those skilled in the art understands and reads
Has technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing institute of the present invention
Under the effect of capable of generating and the purpose that can reach, the range that disclosed technology contents can be covered should all be still fallen in
It is interior.Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, also only just
In being illustrated for narration, rather than to limit the scope of the invention, relativeness is altered or modified, without substantive change
Under more technology contents, when being also considered as the enforceable scope of the present invention.
Fig. 1-5 shows the one embodiment on offshore wind turbine gravity caisson basis of the present invention.
As shown in Figure 1, the gravity caisson basis includes concrete prefabricated reinforcement collar tie beam 100, anti-ice cone 300, cylinder
Piece housing 400 and cylinder caisson 600.Reinforce being embedded with prestressed bolt 200 in collar tie beam 100.Anti-ice cone 300 is reverse taper knot
Structure, cone generatrices and horizontal plane are in angle of 45 degrees.Cylinder piece housing 400 carries out prestressed stretch-draw, presstressed reinforcing steel using post stretching
In in the bottom plate 640 of cylinder caisson 600, upper end is anchored in reinforcement collar tie beam 100 500 anchoring lower ends.The compartment of cylinder caisson 600
Ballast is used as filled with ballast filler 700 in 630.Entire gravity caisson basis is mounted on the sea for being laid with blotter 800
On bed surface, the riprap protection layer 900 for preventing from washing away is equipped with around basis.Above-mentioned gravity caisson basis provided by the invention is mixed
Solidifying soil precast construction, uses post-stressed tensioning to cylinder piece housing 400, greatly improved gravity type foundation intensity and
Rigidity significantly reduces the size and weight of gravity type foundation precast construction, has saved material cost, with traditional gravity type base
Plinth is compared, and can be applied to the wind power plant in the multiple sea area of typhoon and large capacity offshore wind farm unit.
As shown in Figure 1, Figure 2 and Figure 3, reinforce collar tie beam 100 and be located at 400 top of cylinder piece housing, inside is embedded with prestressing force
Anchor bolt 200, annular anchor plate 520 and stretching end anchorage 530.Annular 520 shape of anchor plate is circular ring shape, prestressed bolt 200
Inside and outside two circle is evenly arranged along annular 520 circumferential centerline of anchor plate.The upper end of prestressed bolt 200 passes through nut 220 and wind
Machine tower bottom flange 210 connects, and lower end is connect by nut with annular anchor plate 520.Stretching end anchorage 530 is along annular anchor plate
520 circumferential centerlines are evenly arranged a circle, and are located at the centre of two circles inside and outside prestressed bolt 200.Annular 520 basis of anchor plate
The deployment scenarios of prestressed bolt 200 and stretching end anchorage 530 circumferentially uniformly open up the through-hole of corresponding size and number.Ring
Shape anchor plate 520 connects up prestressed bolt 200 as the structure formed a connecting link, and connects presstressed reinforcing steel 500 downwards.As
The key position of blower fan tower barrel bottom flange 210 and gravity caisson basis is connected, the wall thickness for reinforcing collar tie beam 100 is preferably greater than coagulation
The thickness of the prefabricated cylinder piece housing of soil, and high-strength grouting material pouring molding can be used, to be further ensured that reinforcement collar tie beam
100 structural reliability.For the tensile property for improving prestressed bolt 200, preferably big hexangle type high-strength bolt, quantity
It can be calculated and be determined according to the fan loads that top passes over specification.By prestressed bolt 200 to blower fan tower barrel bottom flange
210 apply pretightning force, can guarantee that the structure for reinforcing collar tie beam 100 is in pressured state always, significantly improve and reinforce collar tie beam 100
The fatigue life of position concrete can also adjust blower fan tower barrel bottom flange 210 by the installation site of adjusting nut 220
It is flat, so that it is smooth to ring flange so that above-mentioned gravity caisson basis provided by the invention is met blower fan tower barrel lifting well
The requirement of degree.
As shown in Figure 1, Figure 4 and Figure 5, cylinder piece housing 400 is prestressed reinforced concrete construction, it is preferred to use high-intensitive coagulation
Soil is prefabricated to be formed.Remain for penetrating the prestressed pore passage 510 of presstressed reinforcing steel 500 in advance along the even circumferential of concrete prefabricated shell,
Prestressed pore passage 510 is corresponding with the through-hole on 520 circumferential centerline of annular anchor plate.Pre- answer is penetrated in prestressed pore passage 510
After power muscle 500, prestressed stretch-draw is carried out to concrete prefabricated shell using post stretching, presstressed reinforcing steel 500 runs through cylinder piece housing
The prestressed pore passage 510 reserved on 400, for anchoring lower ends on the fixing end anchorage 540 in bottom plate 640, upper end passes through stretching end
Anchorage 530 is anchored on the annular anchor plate 520 reinforced in collar tie beam 100.High-strength low relaxed prestress can be selected in presstressed reinforcing steel 500
Steel strand wires.Cylinder caisson 600 is made of outer wall 610, floor 620, compartment 630 and bottom plate 640,620 both ends of floor respectively with circle
Shell of column shell 400 and outer wall 610 connect, and compartment 630 is made of 8 equally distributed fan-shaped regions, naturally it is also possible to uniform
It is divided into the region of its quantity such as 6 or 10, as shown in the figure only a kind of signal.Ballast filler is filled in compartment 630
700, top is covered with the riprap protection layer 900 for preventing from washing away.The fixing end anchor of presstressed reinforcing steel 500 is embedded with inside bottom plate 640
Tool 540, bottom plate 640 can be rest directly upon on the sea bed face for being equipped with blotter 800.Form makes blower using the above structure
The stress that load is transferred to foundation bottom is clear, and load transmission path is simply direct, post-stressed concrete structure intensity
Big with rigidity, anti-seawater corrosion effect is good, and easy for construction, 400 sectional dimension of cylinder piece housing is smaller, the wave and ocean current being subject to
It acts on smaller.
Ballast filler 700 is preferably sandstone filler, such as the gradation filler of sea sand, rubble or seawater, is filled in described
Cylinder piece housing 400 and cylinder caisson 600 compartment 630 cavity in.Gravity type foundation is very big to ballast demand,
Coastal area sea sand, rubble equipressure loading supply are sufficient, cheap, advantageously reduce engineering cost.
The installation method on the offshore wind turbine gravity caisson basis of the present embodiment, includes the following steps：
1) concreting bottom plate 640, and the pre-buried fixing end anchorage 540 in bottom plate are utilized；
2) cylinder caisson 600, cylinder piece housing 400, anti-ice cone 300 are poured and reinforces collar tie beam 100, and in cylinder piece housing
Prestressed pore passage 510 is reserved in 400；
3) 200 lower end of prestressed bolt is embedded in after being fixedly connected by nut with annular anchor plate 520 reinforces collar tie beam 100
It is interior；
4) by 500 anchoring lower ends of presstressed reinforcing steel on the fixing end anchorage 540 in bottom plate 640, upper end passes through stretching end anchor
Tool 530 be anchored in reinforce collar tie beam 100 in annular anchor plate 520 on, 500 upper end of presstressed reinforcing steel by stretching end anchorage 530 into
Row stretching construction；
5) it is in the milk after stretching construction to prestressed pore passage 510；
6) by gravity caisson basis whole Transporting to Attention problems position, the water filling in the compartment 630 of cylinder caisson 600
Sink；
7) ballast filler 700 is filled in the compartment 630 of cylinder caisson 600；
8) upper end of prestressed bolt 200 is connect by nut 220 with blower fan tower barrel bottom flange 210；
9) by adjust 200 upper end of prestressed bolt nut 220 installation site, to blower fan tower barrel bottom flange 210 into
Row leveling meets requirement of the blower fan tower barrel lifting to flange formation degree.
As described above, the present invention uses concrete prefabricated caisset, post-stressed is carried out to cylinder piece housing
It draws, the strength and stiffness of gravity type foundation greatly improved, significantly reduce the size and weight of gravity type foundation precast construction,
The anti-seawater corrosion effect of foundation structure is good, saves steel, and land fabrication mode is built, and marine on-site installation work amount is small, saves
Construction time and expense, center of gravity is lower, with good stability, can be applied to large capacity Wind turbines and shallow overburden
Offshore wind farms.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of offshore wind turbine gravity caisson basis, it is characterised in that：Including concrete prefabricated cylinder caisson
(600), cylinder piece housing (400), anti-ice cone (300) and reinforcement collar tie beam (100), the cylinder piece housing (400) are located at described
The top of cylinder caisson (600)；The top reinforced collar tie beam (100) and be located at the cylinder piece housing (400)；The anti-ice cone
(300) it is located at the cylinder piece housing (400) and reinforcement collar tie beam (100) intersection, and is located at the cylinder piece housing
(400) periphery；Longitudinal prestressed pore passage (510) are provided in the cylinder piece housing (400)；Presstressed reinforcing steel (500) is worn
Enter the prestressed pore passage (510), in the bottom plate (640) of the cylinder caisson (600), upper end is anchored in described anchoring lower ends
Reinforce in collar tie beam (100).
2. a kind of offshore wind turbine gravity caisson basis according to claim 1, it is characterised in that：It is described to add
The wall thickness of strong collar tie beam (100) is greater than the wall thickness of the cylinder piece housing (400).
3. a kind of offshore wind turbine gravity caisson basis according to claim 1 or 2, it is characterised in that：Institute
State the fixing end anchorage (540) that presstressed reinforcing steel is embedded in bottom plate (640)；Pre- answer is embedded with inside the reinforcement collar tie beam (100)
Power anchor bolt (200), annular anchor plate (520) and the presstressed reinforcing steel stretching end anchorage (530)；The prestressed bolt
(200) circumferential centerline along the annular anchor plate (520) is evenly arranged inside and outside two circle；The prestressed bolt (200)
Upper end is connect by nut with blower fan tower barrel bottom flange (210), and lower end is connect by nut with the annular anchor plate (520),
Blower fan tower barrel bottom flange (210) is fixed on the top for reinforcing collar tie beam (100)；The stretching end anchorage (530) is along institute
The circumferential centerline for stating annular anchor plate (520) is evenly arranged a circle, and is located at two circles inside and outside the prestressed bolt (200)
Centre, the presstressed reinforcing steel (500) are anchored on the annular anchor plate (520) by the stretching end anchorage (530).
4. a kind of offshore wind turbine gravity caisson basis according to claim 1 or 2, it is characterised in that：Institute
Stating cylinder caisson (600) includes outer wall (610), floor (620), compartment (630) and bottom plate (640)；Floor (620) both ends
It is connect respectively with the cylinder piece housing (400) and the outer wall (610) extended in the cylinder caisson (600), in institute
It states in cylinder caisson (600) and is divided into several equally distributed compartments (630)；Ballast is filled in the compartment (630)
Filler (700), top are covered with riprap protection layer (900).
5. a kind of offshore wind turbine gravity caisson basis according to claim 4, it is characterised in that：The pressure
Carrying filler (700) is sandstone filler.
6. a kind of offshore wind turbine gravity caisson basis according to claim 1 or 2, it is characterised in that：Institute
Stating anti-ice cone is inverted pyramidal structures, and cone generatrices and horizontal plane are in angle of 45 degrees.
7. a kind of offshore wind turbine gravity caisson basis according to claim 1 or 2, it is characterised in that：Institute
Gravity caisson basis is stated to be mounted on the sea bed face for being laid with blotter, it is anti-equipped with jackstone around the gravity caisson basis
Sheath.
8. a kind of a kind of installation method on offshore wind turbine gravity caisson basis as claimed in claim 3, special
Sign is to include the following steps：
1) bottom plate (640) of cylinder caisson (600) described in concreting, and the pre-buried fixation in the bottom plate (640) are utilized
It holds anchorage (540)；
2) it is (300) and described that the cylinder caisson (600), the cylinder piece housing (400), anti-ice cone are poured from lower to upper
Reinforce collar tie beam (100), and reserves the prestressed pore passage (510) in the cylinder piece housing (400)；
3) prestressed bolt (200) lower end is embedded in the stiffening ring after being fixedly connected by nut with annular anchor plate (520)
In beam (100)；
4) by the presstressed reinforcing steel (500) anchoring lower ends on the fixing end anchorage (540) in the bottom plate (640), upper end is logical
It crosses on the annular anchor plate (520) that stretching end anchorage (530) is anchored in reinforcement collar tie beam (100), the prestressing force
Muscle (500) upper end carries out stretching construction by stretching end anchorage；
5) it is in the milk after stretching construction to the prestressed pore passage (510)；
6) by gravity caisson basis whole Transporting to Attention problems position, toward the compartment of the cylinder caisson (600)
(630) water filling is sunk in, is mounted on the sea bed face for being laid with blotter；
7) ballast filler is filled in the compartment (630) of the cylinder caisson；
8) upper end of the prestressed bolt (200) passes through nut and the blower fan tower barrel at the top of reinforcement collar tie beam (100)
Bottom flange (210) connection.
9. a kind of installation method on offshore wind turbine gravity caisson basis according to claim 8, feature
It is：By adjusting the installation site of the nut of prestressed bolt (200) upper end, to blower fan tower barrel bottom flange
(210) it is leveled.
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| CN201810791356.XA CN108867684A (en) | 2018-07-18 | 2018-07-18 | Offshore wind turbine gravity caisson basis and its installation method |
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Cited By (10)
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|---|---|---|---|---|
| CN109440796A (en) * | 2018-11-30 | 2019-03-08 | 中铁第四勘察设计院集团有限公司 | Suitable for the inverted T shaped precast caisson of deep water drift net area or shallow overburden basis and its construction method |
| CN109723073A (en) * | 2019-01-18 | 2019-05-07 | 中交第一航务工程局有限公司 | Structure is torn open outside pipe valve in caisson water inlet |
| CN110106909A (en) * | 2019-06-13 | 2019-08-09 | 中交上海港湾工程设计研究院有限公司 | A kind of anchor pole gravity type offshore wind basis and its construction method |
| CN110397062A (en) * | 2019-07-15 | 2019-11-01 | 河北工业大学 | A kind of offshore wind farm unit reinforces combined type single-pile foundation and construction method |
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| CN109440796A (en) * | 2018-11-30 | 2019-03-08 | 中铁第四勘察设计院集团有限公司 | Suitable for the inverted T shaped precast caisson of deep water drift net area or shallow overburden basis and its construction method |
| CN109723073B (en) * | 2019-01-18 | 2024-02-13 | 中交第一航务工程局有限公司 | External dismounting structure for water inlet inner valve of caisson |
| CN109723073A (en) * | 2019-01-18 | 2019-05-07 | 中交第一航务工程局有限公司 | Structure is torn open outside pipe valve in caisson water inlet |
| CN111456074A (en) * | 2019-01-18 | 2020-07-28 | 深圳国金电力新能设计院有限公司 | Center barrel component, center barrel and tower barrel foundation |
| CN110106909A (en) * | 2019-06-13 | 2019-08-09 | 中交上海港湾工程设计研究院有限公司 | A kind of anchor pole gravity type offshore wind basis and its construction method |
| CN110106909B (en) * | 2019-06-13 | 2024-03-12 | 中交上海港湾工程设计研究院有限公司 | Anchor rod gravity type offshore wind power foundation and construction method thereof |
| CN110397062A (en) * | 2019-07-15 | 2019-11-01 | 河北工业大学 | A kind of offshore wind farm unit reinforces combined type single-pile foundation and construction method |
| CN114084302A (en) * | 2020-08-24 | 2022-02-25 | 上海电气风电集团股份有限公司 | Fixed foundation of offshore wind turbine, offshore wind turbine device and transportation and installation method of offshore wind turbine complete machine |
| CN113417310A (en) * | 2021-06-02 | 2021-09-21 | 中建二局第四建筑工程有限公司 | Construction method for foundation of column cap type elevator |
| CN114622532A (en) * | 2022-04-01 | 2022-06-14 | 大连理工大学土木建筑设计研究院有限公司 | Gravity type ice breaking cone and construction method thereof |
| CN114991200A (en) * | 2022-06-24 | 2022-09-02 | 中国电力工程顾问集团西北电力设计院有限公司 | Onshore wind turbine generator set cast-in-place concrete box type foundation and construction method |
| CN114960739A (en) * | 2022-06-30 | 2022-08-30 | 中广核(东至)新能源有限公司 | Wind turbine generator prestress foundation structure and construction method thereof |
| CN114960739B (en) * | 2022-06-30 | 2023-08-22 | 中广核(东至)新能源有限公司 | Prestressed foundation structure of wind turbine generator and construction method thereof |
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