CN109267555A - The Large marine platform integral type jacket structure and installation method of the installation of support method are floated suitable for deep water sea area - Google Patents
The Large marine platform integral type jacket structure and installation method of the installation of support method are floated suitable for deep water sea area Download PDFInfo
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- CN109267555A CN109267555A CN201811105941.6A CN201811105941A CN109267555A CN 109267555 A CN109267555 A CN 109267555A CN 201811105941 A CN201811105941 A CN 201811105941A CN 109267555 A CN109267555 A CN 109267555A
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- 238000009434 installation Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000007667 floating Methods 0.000 claims abstract description 29
- 241001317177 Glossostigma diandrum Species 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000003139 buffering effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000011440 grout Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003653 coastal water Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0008—Methods for grouting offshore structures; apparatus therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
- E02B17/027—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto steel structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/006—Platforms with supporting legs with lattice style supporting legs
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Abstract
The present invention provides the Large marine platform integral type jacket structure and installation method that are suitable for the floating support method installation of deep water sea area, the monoblock type jacket is integral by main pipe, steel-pipe pile, stull, diagonal brace connection；The top of the monoblock type jacket is the floating area Tuo Fajinchuan, and lower part is jacket connected region；The main pipe of the monoblock type jacket is arranged in the both wings of platform longitudinal direction, and certain hollow region is reserved among the main pipe of inside, the disengaging of barge when guaranteeing floating support method installation；Lower part connected region is multilayer truss structure, by the truss structure that the connection of two sides main pipe is integral.The present invention is not only suitable for deepwater regions and floats support method installation offshore platform, also ensures the structural integrity requirement of deep water sea area jacket, can bear horizontal force caused by vertical force that the electrical platform in top transmits and environmental load.Monoblock type jacket structure pattern provided by the invention and its installation method are equally applicable to the Offshore Platform structure of other deep water sea area arrangements.
Description
Technical field
The invention belongs to Oversea wind power generation fields, and in particular to a kind of large size that the installation of support method is floated suitable for deep water sea area
Offshore platform monoblock type jacket structure and its installation method.
Background technique
Wind energy is as a kind of clean renewable energy, with the amount of containing is huge, environmental benefit is good, the capital construction period is short, dress
The advantages that machine scaleable, the increasingly attention by countries in the world.THE WIND ENERGY RESOURCES IN CHINA is abundant, and especially offshore wind farm has
Resource reserve is big, high wind speed, low turbulent flow, environmental noise pollution is small, the capital construction period is short and is not take up the advantages such as arable land, and becomes close
The emphasis of a little year Wind Power Generations.
Marine electrical platform is the current remittance collection center of marine wind electric field, occupy core status in entire wind power plant,
Major function is that offshore wind farm unit generates electricity to collect, and is delivered to land after boosting or the change of current, then by sea cable.
With the fast development of China's offshore wind farm, coastal waters, shallow sea wind power resource will gradually be developed totally, future China
The development trend of offshore wind farm will offshore be increasingly remoter, the depth of water is deeper and deeper, it is contemplated that China will be gradually in water after 2018
Marine wind electric field is built in the sea area of deep 50m or more.In addition, as the increase of marine wind electric field installed capacity and sea are electrical flat
The promotion of platform function, the size scale and weight of platform will dramatically increase, and platform longitudinal length is even up to 80m or more, weight
Up to 20,000 tons.The scheme of conventionally employed large-scale crane ship lifting will be limited by loop wheel machine equipment, be needed at this time using floating support method
Attention problems are carried out to large electric platform.The basis of marine electrical platform is that entire platform upper structure is fixed on sea bed
Facility.For the small-sized electrical platform in sea, traditional method is in Platform center arranged just beneath monoblock type jacket；But for
The electrical platform of 10,000 tons Large marine, the cantilever design that above-mentioned foundation pattern will lead to platform both wings is too long, on the one hand can restrict
The equipments layout scheme of electrical platform both wings, on the other hand will lead to electrical platform overall structure " top-heavy " problem and highlights,
Structure stress is unreasonable to cause upper brace dynamic effect significant, threatens the long-term safety stable operation of platform.In addition, tradition is whole
Body formula jacket basis can not install the electrical platform of Large marine using floating support method.In general, for Large marine
The bottom bracing structure of electrical platform, needs enough rigidity to bear the vertical force and environment that upper chunk is transmitted
Horizontal force caused by load；Especially for the electrical platform of Large marine of deep water sea area installation, the arrangement on jacket basis
Pattern and structural shape and conventional catheters frame will have notable difference, and on the one hand it needs enough bearing capacity support upper groups
On the other hand block needs the advance and retreat ship space of reserved floating support method installation.Therefore it needs to explore and a kind of completely new is suitable for deep water sea
Float the electrical platform jacket foundation structure pattern of Large marine of support method installation in domain.
Summary of the invention
Present invention technical problems to be solved first are: for the electrical platform of Large marine of deep water sea area installation, providing
Safe and reliable in a kind of structure, it is convenient to construct, and can be used for floating the Large marine platform integral type jacket structure of support method installation.
The technical scheme adopted by the invention is that: the Large marine platform integral type of support method installation is floated suitable for deep water sea area
Jacket structure, it is characterised in that the monoblock type jacket is integral by main pipe, steel-pipe pile, stull, diagonal brace connection；
The top of the monoblock type jacket is the floating area Tuo Fajinchuan, and lower part is jacket connected region；The monoblock type jacket
Main pipe be arranged in the both wings of platform longitudinal direction, and certain hollow region is reserved among the main pipe of inside, to guarantee floating support
The disengaging of barge when method is installed；Lower part connected region is multilayer truss structure, is connected into two sides main pipe by the truss structure
It is whole.Girders layer number is determined according to the depth of water and platform entirety mechanical characteristic.The first row horizontal brace of the lower part connected region is high
Journey needs to be determined according to the draft for floating support method installation barge.
It is connected by horizontal brace with diagonal brace between the main pipe of the monoblock type jacket.
The monoblock type jacket laterally uses multiline pile, more Pin jacket structures to guarantee lateral horizontal rigidity.
The monoblock type jacket longitudinally outboard and both lateral sides, which are equipped with, leans on ship platform, and inside is equipped with Anti-collision fender device,
Leading truck is being installed into shipboard.
Steel-pipe pile is inserted into inside the main pipe, steel-pipe pile uses straight stake.The inside setting steel-pipe pile of the main pipe
Guide frame, guide frame arrangement elevation is located near the horizontal brace of jacket, and is evenly arranged along leading inside pipe wall circumferential direction.
The main pipe is disposed with multiple grout holes, arrangement on the outside of the main pipe of the monoblock type jacket along its length
There is grouting pipeline, is connected as one the steel-pipe pile inside main pipe and main pipe by perfusion pea gravel concreten, in main pipe
Bottom is provided with grouting packer, dominates inside pipe wall and multiple tracks shear connector is arranged in steel-pipe pile outer wall.
The multiple grouting mouth may be provided at three regions of upper, middle and lower of main pipe.
The steel-pipe pile pile sinking in place after, steel-pipe pile upper surface is concordantly cut off, by imperial crown plate by pile lining and main pipe
Wall welding.
Spud leg coupling device LMU is installed, upper flat important actor leg and conduit when for floating the installation of support method at the top of the steel-pipe pile
The buffering of frame is docked.
The monoblock type jacket is equipped with mud mat in lower horizontal brace face, and mud mat is by lower part bearing beam and top bed board structure
At several apopores are arranged on bed board.
The present invention another the technical problem to be solved is that provide it is a kind of suitable for deep water sea area float support method installation it is big
The installation method of type offshore platform monoblock type jacket structure, it is characterised in that: the following steps are included:
(1) installation site for determining jacket carries out the sea bed face of installation site levelling；
(2) it is leveled using lifting mode by monoblock type jacket sinking to sea bed, and to jacket；
(3) it is inserted into steel-pipe pile in the main pipe of jacket, then successively drives piles；It should monitoring tube frame at any time in pile driving process
Levelness, and according to the Level-adjusting piling order of jacket；
(4) jacket is finely leveled；The steel-pipe pile pile sinking in place after, steel-pipe pile upper surface is concordantly cut off,
Pile lining and leading tube wall are welded by imperial crown plate；
(5) high-strength pea gravel concreten is perfused in the gap between main pipe and steel-pipe pile, keeps the jacket and steel-pipe pile tight
Close connection；
(6) spud leg coupling device LMU is installed in steel-pipe pile top surface after cutting flat with, when for floating the installation of support method upper flat important actor leg with
The buffering of jacket is docked.
The present invention is directed to the electrical platform of Large marine of deep water sea area installation, provides one for the deep above deepwater regions of 50m
Safe and reliable in kind structure, it is convenient to construct, and can be used for floating the Large marine platform integral type jacket structure of support method installation.The knot
Structure top is the floating area Tuo Fajinchuan, and lower part is jacket connected region, has both preset the barge advance and retreat space when installation of floating support method,
The structural integrity requirement that ensure that deep water sea area jacket makes it have enough rigidity to bear the electrical platform transmitting in top
Horizontal force caused by the vertical force and environmental load got off.Monoblock type jacket structure pattern provided by the invention and its installation
Method is equally applicable to the Offshore Platform structure of other deep water sea area arrangements.
The main pipe that the area Tuo Fajinchuan is floated on monoblock type jacket top of the invention is arranged in large electric platform both wings, compared with
The mode stress of traditional platform arranged just beneath jacket is more reasonable, can effectively prevent inertia lotus caused by structure " top-heavy "
It carries and excessive integral platform is caused to damage.Integrally-built water can effectively ensure that using multiline pile, more Pin jacket structure patterns
Flat rigidity is remarkably improved the bearing capacity of monoblock type jacket.
It is provided with grouting pipeline on the outside of the main pipe of jacket of the present invention, directly underwater portion can be filled more than the water surface
Slurry, grouting construction are convenient；Grouting pipeline is directly connected to three regions of upper, middle and lower of main pipe, guarantees grouting effect.
Detailed description of the invention
Fig. 1 is the Large marine platform integral type jacket structure implementation that the present invention is suitable for that deep water sea area floats the installation of support method
Longitudinal elevation of example, wherein because mud mat is completely obscured by the lower horizontal brace of jacket, therefore do not show.
Fig. 2 is the Large marine platform integral type jacket structure implementation that the present invention is suitable for that deep water sea area floats the installation of support method
The lateral elevation of example, wherein because mud mat is completely obscured by the lower horizontal brace of jacket, therefore do not show.
Fig. 3 is that inside pipe wall guide pad arrangement partial schematic diagram is dominated in the embodiment of the present invention.
Fig. 3 a is the A-A cross-sectional view of Fig. 3.
Fig. 3 b is the B-B cross-sectional view of Fig. 3 a.
Fig. 4 is be in the milk in the embodiment of the present invention pipeline, grouting packer and shear connector arrangement partial schematic diagram.
Fig. 4 a is the partial enlarged view of Fig. 4.
Fig. 5 is the top view that embodiment illustrated in fig. 1 floats the area Tuo Fajinchuan.
Fig. 5 a is the schematic diagram of Anti-collision fender device.
Fig. 5 b is the A-A cross-sectional view of Fig. 5 a.
Fig. 5 c is the B-B cross-sectional view of Fig. 5.
Fig. 6 is monoblock type jacket bottom mud mat schematic diagram in embodiment.
Specific embodiment
As shown in Fig. 1 ~ Fig. 6, the present embodiment is the electrical platform 1 in sea of a 1100MW capacity scale, wind-powered electricity generation field marine
Depth of water 50m.Marine electrical platform 1 is that integrally closed structure is always weighed about having a size of long 88m × wide 72m × high 36m
20000t.The electrical platform 1 of the Large marine completes integral construction construction by land, is then transported to wind-powered electricity generation field marine scene and is floated
The installation of support method.
As shown in Fig. 1 ~ Fig. 6, the monoblock type jacket 2 of the present embodiment is provided with main pipe 3, steel-pipe pile 4, stull 5, diagonal brace
6, mud mat 21, guide pad 13, grouting pipeline 14, grouting packer 16, Anti-collision fender 10, lean on ship platform 8,9,20 and of leading truck
Spud leg coupling device LMU11.
The monoblock type jacket is connected integral by main pipe 3, steel-pipe pile 4, stull 5, diagonal brace 6.
As shown in Fig. 1 ~ Fig. 2, the top of monoblock type jacket 2 is the floating area Tuo Fajinchuan, and lower part is jacket connected region.On
The main pipe 3 that the area Tuo Fajinchuan is floated in portion is arranged in the both wings of platform longitudinal (length direction), and one is reserved among the main pipe of inside
Fixed hollow region 100, the disengaging of barge 7 when guaranteeing floating support method installation.Lower part connected region is the double-deck truss structure, by this
The double-deck truss structure connects the two sides main pipe 3 in top into ship area integral.Steel pipe is inserted into inside the main pipe 3 of jacket 2
Stake 4, preferably, as shown in Fig. 1 ~ Fig. 2, the straight stake 4 of the six roots of sensation is respectively arranged in platform inner side and outer side；Laterally use three Pin conduits
Frame structure is to guarantee lateral horizontal rigidity；The lattice combined using five row of horizontal stulls 5 and diagonal brace 6 of monoblock type jacket 2
Pattern, and sea bed is fixed to by 12 steel-pipe piles 4.
As shown in Fig. 1 ~ Fig. 2 and Fig. 5,5a, 5b, 5c, 2 longitudinally outboard of monoblock type jacket and both lateral sides are equipped with and put down by ship
Platform 8,9；Inside is equipped with Anti-collision fender device 10, and the longitudinal pitch of Anti-collision fender device 10 is wider than the type of floating support method installation barge 7
Big 20cm or so guarantees that the gap in floating support method installation process between barge 7 and two sides fender 10 is maintained at the left side 10cm with this
The right side, to prevent the shock for causing barge and platform to shake to jacket 2 of surging, 10 surface of Anti-collision fender device need to install anticollision
Rubber pad 19, in this way, floating support method installation barge can be prevented to the collsion damage of jacket；In being led into shipboard installation for jacket 2
To frame 20, guiding function is played in the installation of floating support method, barge 7 can be made to can smoothly enter into inside monoblock type jacket 2.
As shown in Fig. 3,3a, 3b, three guide rings 12, guiding is arranged in the inner wall in main pipe 3 Yu 5 junction of horizontal brace
Ring 12 is evenly arranged by several guide pads 13 along 3 inner wall circumferential direction of main pipe, is played guiding function in pitching pile, is made stake position
In leading tube hub, stake is prevented to be stuck in main pipe side in insertion.Preferably, per pass guide ring 12 in the present embodiment
Arrange 12 guide pads 13, the guide pad 13 of bottom should be on the top of grouting packer 16.
As shown in Fig. 4,4a, grouting pipeline 14 is disposed on the outside of the main pipe 3 of monoblock type jacket 2, in the upper of main pipe 3
In lower three sections be respectively provided with a grouting mouth 15；3 bottom of main pipe is provided with grouting packer 16, grouting when preventing from being in the milk
Material leaks out；Steel-pipe pile 4 is inserted into inside main pipe 3, between the two by the way that high-strength pea gravel concreten connection is perfused；3 inner wall of main pipe
Multiple tracks shear connector 17 is set with 4 outer wall of steel-pipe pile, for the internal force transmitting between stake and main pipe, can effective lift structure it is anti-
Ability is cut, keeps the connection between main pipe and stake relatively reliable, 17 make of shear connector is used the elongated C20 of closed circular annular
It is realized on reinforcement welding to tube wall.
As shown in Fig. 1 ~ Fig. 2, spud leg coupling device LMU11 is installed at the top of steel-pipe pile 4, for floating support method installation upper brace
Load is smoothly transferred on jacket 2 from barge 7 when 1, and guarantees that 1 column leg of upper brace is docked with the buffering of jacket 2.
As shown in fig. 6, monoblock type jacket 2 is equipped with mud mat 21 in bottom level stull face, jacket 2 when preventing from driving piles
Differential settlement.Mud mat 21 is made of the bed board 23 of lower part bearing beam 22 and laying surface on it, bed board 23 with a thickness of
Several apopores 24 are arranged in 5mm on bed board.
Monoblock type jacket 2 is manufactured in land, 13 He of guide pad has been provided in the main pipe 3 of jacket 2
Shear connector 17.In the present embodiment monoblock type jacket 2 installation the following steps are included:
(1) installation site for determining jacket 2 carries out the sea bed face of installation site levelling；
(2) it is leveled using lifting mode by 2 sinking of monoblock type jacket to sea bed, and to jacket 2, levels rear tube frame
2 levelness deviation≤0.2%；
(3) it is inserted into steel-pipe pile 4 in the main pipe 3 of jacket 2, then successively drives piles；It should monitoring tube at any time in pile driving process
The levelness of frame 2, and according to the Level-adjusting piling order of jacket 2；
(4) jacket 2 is finely leveled, makes levelness deviation≤0.5% of pile sinking rear tube frame 2；The steel-pipe pile
4 pile sinking in place after, 4 upper surface of steel-pipe pile is concordantly cut off, is welded pile lining and leading tube wall by imperial crown plate 18；
(5) high-strength pea gravel concreten is perfused in the gap between main pipe 3 and steel-pipe pile 4, makes the jacket 2 and steel-pipe pile
4 close connections；
(6) spud leg coupling device LMU11 is installed in 4 top surface of steel-pipe pile after cutting flat with, and can incite somebody to action when floating support method installs upper brace
Load is smoothly transferred on jacket from barge, and guarantees that 1 column leg of upper brace is docked with the buffering of jacket 2.
Monoblock type jacket 2 installed using above-mentioned installation method it is in place after, by barge 7 carry offshore platform 1 into
Enter the floating area Tuo Fajinchuan among the monoblock type jacket 2 and carry out floating support method installation, and load transfer is completed by LMU11,
So that the column leg of offshore platform 1 and the main pipe 3 of monoblock type jacket 2 dock.
Above embodiments are only a kind of more excellent technical solution of the invention, it will be understood by those of skill in the art that not
Be detached from the principle of the present invention and essential situation can in embodiment technical solution or parameter modify or replace, all
It is covered by the protection scope of the present invention.
Claims (8)
1. being suitable for the Large marine platform integral type jacket structure that deep water sea area floats the installation of support method, it is characterised in that described whole
Body formula jacket is integral by main pipe, steel-pipe pile, stull, diagonal brace connection；
The top of the monoblock type jacket is the floating area Tuo Fajinchuan, and lower part is jacket connected region；The monoblock type jacket
Main pipe be arranged in the both wings of platform longitudinal direction, and certain hollow region is reserved among the main pipe of inside, to guarantee floating support
The disengaging of barge when method is installed；Lower part connected region is multilayer truss structure, is connected into two sides main pipe by the truss structure
It is whole.
2. the Large marine platform integral type jacket knot of support method installation is floated suitable for deep water sea area as described in claim 1
Structure, it is characterised in that the monoblock type jacket uses multiline pile, more Pin jacket structures laterally to have guaranteed lateral level just
Degree.
3. the Large marine platform integral type jacket knot of support method installation is floated suitable for deep water sea area as described in claim 1
Structure, it is characterised in that the guide frame of the inside setting steel-pipe pile of the main pipe, guide frame arrangement elevation are located at jacket
Horizontal brace near, and be evenly arranged along leading inside pipe wall circumferential direction.
4. the Large marine platform integral type jacket knot of support method installation is floated suitable for deep water sea area as described in claim 1
Structure, it is characterised in that the monoblock type jacket longitudinally outboard and both lateral sides are equipped with and lean on ship platform, and inside is equipped with Anti-collision fender
Device is installing leading truck into shipboard.
5. the Large marine platform integral type jacket knot of support method installation is floated suitable for deep water sea area as described in claim 1
Structure, it is characterised in that the main pipe is disposed with multiple grout holes along its length, by the way that pea gravel concreten is perfused by main pipe
It is connected as one with the steel-pipe pile inside main pipe, leading bottom of the tube is provided with grouting packer, dominate inside pipe wall and steel pipe
Multiple tracks shear connector is arranged in stake outer wall.
6. the Large marine platform integral type jacket knot of support method installation is floated suitable for deep water sea area as claimed in claim 5
Structure, it is characterised in that the steel-pipe pile pile sinking in place after, steel-pipe pile upper surface is concordantly cut off, by imperial crown plate by pile lining and master
Catheter wall welding；Spud leg coupling device is installed, upper flat important actor leg and conduit when for floating the installation of support method at the top of the steel-pipe pile
The buffering of frame is docked.
7. the Large marine platform integral type jacket structure described in claim 1 that the installation of support method is floated suitable for deep water sea area,
It is characterized in that its bottom is provided with mud mat, mud mat is made of lower part bearing beam and top bed board, if setting is done on bed board
Water hole.
8. being suitable for the installation method that deep water sea area floats the Large marine platform integral type jacket structure of support method installation, feature
It is: the following steps are included:
(1) installation site for determining jacket carries out the sea bed face of installation site levelling；
(2) it is leveled using lifting mode by monoblock type jacket sinking to sea bed, and to jacket；
(3) it is inserted into steel-pipe pile in the main pipe of jacket, then successively drives piles；
(4) jacket is finely leveled；The steel-pipe pile pile sinking in place after, steel-pipe pile upper surface is concordantly cut off,
Pile lining and leading tube wall are welded by imperial crown plate；
(5) high-strength pea gravel concreten is perfused in the gap between main pipe and steel-pipe pile, keeps the jacket and steel-pipe pile tight
Close connection；
(6) spud leg coupling device LMU is installed in steel-pipe pile top surface after cutting flat with, when for floating the installation of support method upper flat important actor leg with
The buffering of jacket is docked.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811105941.6A CN109267555A (en) | 2018-09-21 | 2018-09-21 | The Large marine platform integral type jacket structure and installation method of the installation of support method are floated suitable for deep water sea area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811105941.6A CN109267555A (en) | 2018-09-21 | 2018-09-21 | The Large marine platform integral type jacket structure and installation method of the installation of support method are floated suitable for deep water sea area |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110980495A (en) * | 2019-12-19 | 2020-04-10 | 南通泰胜蓝岛海洋工程有限公司 | Jacket anti-sinking plate and hoisting and turning-over process thereof |
| CN111391986A (en) * | 2020-03-27 | 2020-07-10 | 中国海洋石油集团有限公司 | Floating type launching truss and jacket comprising same |
| CN113353202A (en) * | 2020-03-04 | 2021-09-07 | 中国电建集团华东勘测设计研究院有限公司 | Floating-supporting type installation structure and method for offshore converter station |
| CN114370041A (en) * | 2021-12-30 | 2022-04-19 | 中国能源建设集团广东省电力设计研究院有限公司 | Basic platform of offshore converter station |
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| CN110980495A (en) * | 2019-12-19 | 2020-04-10 | 南通泰胜蓝岛海洋工程有限公司 | Jacket anti-sinking plate and hoisting and turning-over process thereof |
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| CN111391986A (en) * | 2020-03-27 | 2020-07-10 | 中国海洋石油集团有限公司 | Floating type launching truss and jacket comprising same |
| CN111391986B (en) * | 2020-03-27 | 2022-02-01 | 中国海洋石油集团有限公司 | Floating type launching truss and jacket comprising same |
| CN114370041A (en) * | 2021-12-30 | 2022-04-19 | 中国能源建设集团广东省电力设计研究院有限公司 | Basic platform of offshore converter station |
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