CN209178967U - The split type jacket structure of Large marine platform of support method installation is floated suitable for shallow sea water - Google Patents
The split type jacket structure of Large marine platform of support method installation is floated suitable for shallow sea water Download PDFInfo
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- CN209178967U CN209178967U CN201821555535.5U CN201821555535U CN209178967U CN 209178967 U CN209178967 U CN 209178967U CN 201821555535 U CN201821555535 U CN 201821555535U CN 209178967 U CN209178967 U CN 209178967U
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Abstract
The utility model provides the split type jacket structure of Large marine platform that the installation of support method is floated suitable for shallow sea water.The split type jacket structure is set there are two seperated jacket, they are longitudinally arranged along platform, and reserves certain hollow region as the floating area Tuo Fajinchuan between two seperated jackets；The jacket is integral by inside main pipe, outside main pipe, steel-pipe pile, stull, diagonal brace connection, and steel-pipe pile is arranged in the inside main pipe, outside main pipe；The split type jacket laterally uses multiline pile, more Pin jacket structures, and the steel-pipe pile in the inside main pipe uses straight stake, and the steel-pipe pile in the main pipe of outside uses taper pile；The main pipe of two jackets passes through locating rack location fit in bottom.It is safe and reliable in the utility model structure, it constructs convenient accurate, can be used for shallow sea water and float support method installation Large marine platform.
Description
Technical field
The utility model belongs to Oversea wind power generation field, and in particular to a kind of to float the installation of support method suitable for shallow sea water
The split type jacket structure of Large marine platform.
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.
The basis of marine electrical platform is the facility being fixed on entire platform upper structure on sea bed, and list generally can be used
Pile type foundation, cantilever pile foundation, High-Rise Pile Cap Foundation, jacket basis etc..With the increase of marine wind electric field installed capacity with
And the promotion of marine electrical platform feature, the size scale and weight of platform will dramatically increase, platform longitudinal length is even up to
80m or more, weight is up to 20,000 tons.Tradition will lead to platform two in the mode of Platform center arranged just beneath monoblock type jacket
The cantilever design of the wing is too long, on the one hand can restrict the equipments layout scheme of upper chunk both wings, on the other hand will lead to electrical flat
Platform overall structure " top-heavy " problem highlights, and structure stress is unreasonable to cause upper brace dynamic effect significant, threatens platform
Long-term safety stable operation.In addition, platform electrical for Large marine, the scheme of conventionally employed large-scale crane ship lifting will be by
To the limitation of lifting equipment and the wind field sea area depth of water, need to carry out Attention problems to large electric platform using floating support method at this time.
The bottom bracing structure of platform electrical for Large marine, need enough rigidity to bear that upper chunk transmits is perpendicular
Horizontal force caused by Xiang Li and environmental load.Especially for the Large marine electricity of shallow sea water (depth of water is less than 15m) installation
Gas platform, the layout pattern and structural shape and conventional catheters frame on jacket basis will have notable difference, on the one hand its needs
There are enough bearing capacity support upper chunks, on the other hand needs the advance and retreat ship space of reserved floating support method installation.Therefore it needs
Explore a kind of completely new split type jacket structure pattern of Large marine platform for being suitable for shallow sea water and floating the installation of support method.
Utility model content
The utility model technical problems to be solved first are: the electrical platform of Large marine installed for shallow sea water,
There is provided it is safe and reliable in a kind of structure, construct it is convenient precisely, can be used for floating the split type conduit of Large marine platform of support method installation
Frame structure.
The technical scheme adopted by the utility model is being suitable for the Large marine platform point that shallow sea water floats the installation of support method
Body formula jacket structure, it is characterised in that the split type jacket structure is set there are two seperated jacket, and described two points
The jacket of body is longitudinally arranged along platform, and reserves certain hollow region as floating support between two seperated jackets
The area Fa Jinchuan, the disengaging of barge when guaranteeing floating support method installation upper brace；
The jacket connects integral, the inside by inside main pipe, outside main pipe, steel-pipe pile, stull, diagonal brace
Steel-pipe pile is set in main pipe, outside main pipe；
The split type jacket laterally uses multiline pile, more Pin jacket structures, the steel pipe in the inside main pipe
Stake uses straight stake, and the steel-pipe pile in the main pipe of outside uses taper pile, to increase longitudinal horizontal rigidity and guarantee lateral level
Rigidity；
Locating rack is arranged at corresponding seabed mud face in the split type jacket structure, and the main pipe of two jackets is the bottom of at
Portion passes through locating rack location fit.
The locating rack is provided with several cylinders and is linked to be entirety, all inside masters of two jackets by connection frame
Conduit is inserted into cylinder.Preferably, guide cone is provided at the top of the locating rack cylinder.
The longitudinally outboard and both lateral sides of the split type jacket structure are equipped with by ship platform, and inside is protected equipped with anticollision
Side of a ship device is installing leading truck into shipboard.
It is inserted into steel-pipe pile inside the main pipe, dominates the guide frame that inside pipe wall is equipped with steel-pipe pile, guide frame arrangement
Elevation is located at the horizontal brace up and down of jacket, and is evenly arranged along leading inside pipe wall circumferential direction.
The inside main pipe, outside main pipe are disposed with multiple grout holes, the split type jacket along its length
Main pipe on the outside of be disposed with grouting pipeline, main pipe connected with the steel-pipe pile inside main pipe by perfusion pea gravel concreten
It is integrated, in inside, main pipe, outside dominate bottom of the tube and be provided with grouting packer, and inside pipe wall is dominated in inside main pipe, outside
Multiple tracks shear connector is set with 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 is installed, upper flat important actor leg and jacket when for floating the installation of support method at the top of the steel-pipe pile
Buffering docking.
The split 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 utility model another the technical problem to be solved is that provide a kind of shallow sea water that is suitable for float the installation of support method
The split type jacket structure of Large marine platform installation method, it is characterised in that: the following steps are included:
(1) installation site for determining jacket and locating rack carries out the sea bed face of installation site levelling；
(2) the preparatory sinking of locating rack in place and is leveled；
(3) the inside main pipe of jacket is inserted into respectively in the cylinder of locating rack using lifting mode；It is needed before piling pair
Jacket is leveled；
(4) it is inserted into steel-pipe pile in the main pipe of jacket, then successively drives piles；
(5) jacket is finely leveled；The steel-pipe pile pile sinking in place after, steel-pipe pile upper surface is concordantly cut
It is disconnected, pile lining and leading tube wall are welded by imperial crown plate；
(6) high-strength pea gravel concreten is perfused in the gap between main pipe and steel-pipe pile, keeps main pipe tight with steel-pipe pile
Close connection；
(7) spud leg coupling device LMU is installed in the steel-pipe pile top surface after cutting flat with, upper flat important actor when for floating the installation of support method
Leg is docked with the buffering of jacket.
The utility model is directed to the electrical platform of Large marine of shallow sea water installation, is less than 15m shallow water below for the depth of water
Sea area provide it is safe and reliable in a kind of structure, construct it is convenient precisely, the Large marine platform that can be used for floating the installation of support method is seperated
Formula jacket structure.The structure is longitudinally arranged two independent jackets along upper brace, and hollow region can be used for floating
The barge disengaging of support method installation, on the other hand the scheme of split type jacket can reduce the size on Large marine platform lower basis
And weight, while meeting the requirement that shallow sea water floats support method installation upper brace and shallow sea water transport installation jacket basis.
Split type jacket structure pattern provided by the utility model and its installation method are equally applicable to other shallow sea water arrangements
Offshore Platform structure.
The split type jacket of the utility model is arranged in large electric platform both wings, whole compared with traditional platform arranged just beneath
The mode stress of formula jacket is more reasonable, and inertia load caused by structure " top-heavy " can be effectively prevent excessive to integral platform
It causes to damage.The outside steel-pipe pile of the split type jacket structure of the utility model uses taper pile, can effectively increase jacket basis
Longitudinal horizontal rigidity, integrally-built transversely and horizontally rigidity laterally can effectively ensure that using multiline pile, more Pin jacket structures.
Relative position when split type jacket installation is determined using locating rack, and split type jacket can be effectively prevent in pitching pile and piling
It shifts in the process, guarantees the accurate positioning and installation accuracy of jacket.
Detailed description of the invention
Fig. 1 is the split type jacket structure of Large marine platform that the utility model is suitable for that shallow sea water floats the installation of support method
Longitudinal elevation of embodiment, wherein mud mat is completely obscured by the lower horizontal brace of jacket, therefore does not open up in elevation
It is existing.
Fig. 2 is the split type jacket structure of Large marine platform that the utility model is suitable for that shallow sea water floats the installation of support method
The lateral elevation of embodiment, wherein mud mat is completely obscured by the lower horizontal brace of jacket, therefore does not open up in elevation
It is existing.
Fig. 3 is locating rack schematic diagram in the utility model embodiment.
Fig. 3 a is the schematic diagram in the direction A-A of Fig. 3.
Fig. 3 b is the schematic diagram in the direction B-B of Fig. 3.
Fig. 4 is that inside pipe wall guide pad arrangement partial schematic diagram is dominated in the utility model embodiment.
Fig. 4 a is the schematic diagram in the direction A-A of Fig. 4.
Fig. 4 b is the schematic diagram in the direction B-B of Fig. 4 a.
Fig. 5 is be in the milk in the utility model embodiment pipeline, grouting packer and shear connector arrangement partial schematic diagram.
Fig. 5 a is the partial enlarged view of Fig. 5.
Fig. 6 is the top view that embodiment illustrated in fig. 1 floats the area Tuo Fajinchuan.
Fig. 6 a is the schematic diagram of Anti-collision fender device.
Fig. 6 b is the A-A cross-sectional view of Fig. 6 a.
Fig. 6 c is the B-B cross-sectional view of Fig. 6.
Fig. 7 is split type jacket bottom mud mat schematic diagram in the utility model embodiment.
Specific embodiment
As shown in FIG. 1 to FIG. 7, the present embodiment is the electrical platform 1 in sea of a 1100MW capacity scale, wind-powered electricity generation field marine
Depth of water 14m.Upper brace 1 is integrally closed structure, and having a size of 88m × 72m × 36m, upper brace 1 is always weighed about
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 to FIG. 2, there are two jacket 2 and its attached structures for the split type jacket structure setting of the present embodiment
Part, locating rack 3 and 12 piece steel-pipe pile 4,5.Two independent jackets 2 are arranged in both wings along the longitudinal direction (length direction) of platform 1,
And certain hollow region 100 is reserved among two jackets 2, the disengaging of barge 6 when guaranteeing floating support method installation.
As shown in FIG. 1 to FIG. 7, jacket 2 is provided with three outside main pipes 7 and three insides main pipes 8, horizontal brace
9, diagonal brace 10, individual conduits frame 2 are additionally provided with mud mat 27, guide pad 18, grouting pipeline 19, grouting packer 20, anticollision shield
The side of a ship 11, by ship platform 12,14, leading truck 22 and spud leg coupling device LMU13.
Jacket 2 connected by three outside main pipes 7 and three inside main pipes 8, horizontal brace 9, diagonal brace 10 it is integral,
It is inserted into steel-pipe pile 4,5 respectively inside three outside main pipes 7 of individual conduits frame 2 and three inside main pipes 8, as preferred side
Case, as shown in FIG. 1 to FIG. 2, the six roots of sensation steel-pipe pile 5 of 1 longitudinal medial of platform uses straight stake, and outside six roots of sensation steel-pipe pile 4 uses taper pile,
Correspondingly, outside main pipe 7 is inclined tube, and inside main pipe 8 is vertical tube, and each individual conduits frame 2 passes through three straight stakes 5 and three
Root taper pile 4 is fixed to sea bed, and jacket 2 laterally uses three campsheds, and three Pin jacket structures, further, jacket is using upper
In lower three row of horizontal stulls 9 and the combined lattice pattern of X cross-bridging 10, the longitudinal horizontal rigidity of jacket can be effectively increased simultaneously
Guarantee lateral horizontal rigidity,
As shown in FIG. 1 to 3, relative position when guaranteeing installation between two jackets 2 by locating rack 3 is accurate,
It needs first in place and to level 3 sinking of locating rack before installation jacket 2, locating rack is placed at the mud face of seabed, specifically
Between the flat stull 9 of jacket launching and mud face.Six positioning cylinders 15 are arranged in locating rack 3, respectively correspond split type jacket 2
The six roots of sensation main pipe 8 of inside positions and is connected as entirety by connection frame between cylinder 15；Guide cone 16 is set at the top of cylinder 15,
Main pipe 8 on the inside of the jacket six roots of sensation can be made to can smoothly enter into the cylinder 15 of locating rack 3 and fix during the installation process.Guide cone
16 tilt to the inside of platform 1, are in contact extruding with its lower horizontal brace 9 to avoid when positioning jacket 2.
As shown in figs. 1,2 and 6, split type 2 outside of jacket and both lateral sides are equipped with by ship platform 12,14；It is interior
Side is equipped with Anti-collision fender device 11, and the longitudinal pitch of Anti-collision fender 11 is 20cm more roomy than the type that floating support method installs barge 6 or so,
Guarantee that the gap in floating support method installation process between barge 6 and two sides fender 11 is maintained at 10cm or so with this, to prevent
It surges the shock for causing barge 6 and platform 1 to shake to jacket 2；11 surface of Anti-collision fender need to install anti-collision rubber pad 23.It is leading
Pipe support 2 installs leading truck 22 into shipboard, plays guiding function in the installation of floating support method, barge 6 can be made to can smoothly enter into split type
Inside jacket 2.
As shown in figure 4, twice guide ring 17, guiding is arranged in the inner wall in main pipe 7,8 Yu upper and lower 9 junction of horizontal brace
Ring 17 is evenly arranged by several guide pads 18 along leading inside pipe wall circumferential direction, 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 17 in the present embodiment
Arrange 12 guide pads 18, the guide pad 18 of bottom should be on the top of grouting packer 20.
As shown in figure 5,7,8 outside of main pipe of split type jacket 2 is disposed with grouting pipeline 19, it can be more than the water surface
It is directly in the milk to underwater portion, grouting construction is convenient；A grouting mouth is respectively provided in three sections of upper, middle and lower of main pipe 7,8
29, it can guarantee grouting effect；Main pipe 7,8 bottoms are provided with grouting packer 20, prevent grouting material when grouting from leaking out；It is leading
Steel-pipe pile 4,5 is inserted into 7,8 inside of pipe, between the two by the way that high-strength pea gravel concreten connection is perfused；Main pipe 7,8 inner walls and steel pipe
Stake 4,5 outer walls be arranged multiple tracks shear connector 21, between stake and main pipe internal force transmitting, can effectively lift structure shearing resistance energy
Power keeps the connection between main pipe and stake relatively reliable, and 21 make of shear connector is used the elongated C20 steel of closed circular annular
Muscle is soldered on tube wall and realizes.
As shown in FIG. 1 to FIG. 2, spud leg coupling device LMU13 is installed at 4,5 top of steel-pipe pile, for floating support method installation top
Load is smoothly transferred on jacket 2 from barge 6 when platform 1, and guarantees the buffering of 1 column leg and jacket 2 of upper brace
Docking.
As shown in fig. 7, split type jacket 2 is equipped with mud mat 27 in lower horizontal brace face, jacket when preventing from driving piles
Differential settlement.Mud mat 27 is made of the bed board 25 of lower part bearing beam 24 and laying surface on it, bed board 25 with a thickness of 5mm,
Several apopores 26 are set on bed board 25.
Jacket 2 is manufactured in land, the guide pad 18 and shearing have been provided in the main pipe 7,8 of jacket 2
Key 21.In the present embodiment split type jacket installation the following steps are included:
(1) installation site for determining jacket 2 and locating rack 3 carries out leveling to the sea bed face of installation site；
(2) the preparatory sinking of locating rack 3 in place and is leveled；
(3) that the six roots of sensation main pipe 8 of 2 inside of split type jacket is inserted into locating rack 3 respectively using lifting mode is corresponding
In cylinder 15；It needs to level jacket before piling, levels rear tube frame levelness deviation≤0.2%；
(4) it is inserted into steel-pipe pile 4,5 in the main pipe of jacket 27,8, then successively drives piles；It should be at any time in pile driving process
The levelness of monitoring tube frame, and according to the Level-adjusting piling order of jacket；
(5) jacket is finely leveled, makes levelness deviation≤0.5% of pile sinking rear tube frame；To steel-pipe pile 4,
5 pile sinking in place after, steel-pipe pile 4,5 upper surfaces are concordantly cut off, and welded pile lining and leading tube wall by imperial crown plate 28；
(6) high-strength pea gravel concreten is perfused in the gap between main pipe 7,8 and steel-pipe pile 4,5, make jacket 2 with
Steel-pipe pile 4,5 closely connects；
(7) spud leg coupling device LMU13 is installed in the steel-pipe pile 4 after cutting flat with, 5 top surfaces, can install upper flat in floating support method
Load is smoothly transferred on jacket from barge when platform, and guarantees that 1 column leg of upper brace is docked with the buffering of jacket 2.
Split type jacket 2 installed using above-mentioned installation method it is in place after, by barge 6 carry offshore platform 1 into
Enter the floating area Tuo Fajinchuan among the split type jacket 2 and carry out floating support method installation, and load transfer is completed by LMU13,
So that the column leg of offshore platform 1 and the main pipe 7,8 of split type jacket 2 dock.
Above embodiments are only a kind of more excellent technical solution of the utility model, it will be understood by those of skill in the art that
In the case where not departing from the principles of the present invention and essential situation can in embodiment technical solution or parameter modify or
Person's replacement, should be covered within the scope of the utility model.
Claims (8)
1. being suitable for the split type jacket structure of Large marine platform that shallow sea water floats the installation of support method, it is characterised in that described point
Body formula jacket structure sets that there are two seperated jackets, jacket being longitudinally arranged along platform of described two fissions, and
Certain hollow region is reserved between two seperated jackets as the floating area Tuo Fajinchuan, to guarantee that floating support method installs upper flat
The disengaging of barge when platform；
The jacket is integral by inside main pipe, outside main pipe, steel-pipe pile, stull, diagonal brace connection, and the inside is leading
Steel-pipe pile is set in pipe, outside main pipe；
The split type jacket laterally uses multiline pile, more Pin jacket structures, and the steel-pipe pile in the inside main pipe is adopted
With straight stake, the steel-pipe pile in the main pipe of outside uses taper pile, to increase longitudinal horizontal rigidity and guarantee lateral horizontal rigidity；
Locating rack is arranged in the split type jacket structure at corresponding seabed mud face, and the main pipe of two jackets is logical in bottom
Cross locating rack location fit.
2. the split type jacket knot of Large marine platform of support method installation is floated suitable for shallow sea water as described in claim 1
Structure, it is characterised in that the locating rack is provided with several cylinders and is linked to be entirety by connection frame, and two jackets are all
Inside main pipe is inserted into cylinder.
3. the split type jacket knot of Large marine platform of support method installation is floated suitable for shallow sea water as claimed in claim 2
Structure, it is characterised in that be provided with guide cone at the top of the locating rack cylinder.
4. the split type jacket knot of Large marine platform of support method installation is floated suitable for shallow sea water as described in claim 1
Structure, it is characterised in that be inserted into steel-pipe pile inside the main pipe, dominate the guide frame that inside pipe wall is equipped with steel-pipe pile, guide frame
Arrangement elevation is located at the horizontal brace up and down of jacket, and is evenly arranged along leading inside pipe wall circumferential direction.
5. the split type jacket knot of Large marine platform of support method installation is floated suitable for shallow sea water as described in claim 1
Structure, it is characterised in that the longitudinally outboard and both lateral sides of the split type jacket structure are equipped with by ship platform, and inside is equipped with
Anti-collision fender device is installing leading truck into shipboard.
6. the split type jacket knot of Large marine platform of support method installation is floated suitable for shallow sea water as described in claim 1
Structure, it is characterised in that the inside main pipe, outside main pipe are disposed with multiple grout holes along its length, by the way that microlith is perfused
Steel-pipe pile inside main pipe and main pipe is connected as one by concrete, and in inside, bottom of the tube setting is dominated in main pipe, outside
There is grouting packer, inside main pipe, outside dominate inside pipe wall and multiple tracks shear connector is arranged in steel-pipe pile outer wall.
7. the split type jacket knot of Large marine platform of support method installation is floated suitable for shallow sea water as claimed in claim 6
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.
8. the split type jacket knot of Large marine platform of support method installation is floated suitable for shallow sea water as described in claim 1
Structure, it is characterised in that the split 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 is constituted, and several apopores are arranged on bed board.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821555535.5U CN209178967U (en) | 2018-09-21 | 2018-09-21 | The split type jacket structure of Large marine platform of support method installation is floated suitable for shallow sea water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821555535.5U CN209178967U (en) | 2018-09-21 | 2018-09-21 | The split type jacket structure of Large marine platform of support method installation is floated suitable for shallow sea water |
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| CN209178967U true CN209178967U (en) | 2019-07-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056684A (en) * | 2018-09-21 | 2018-12-21 | 中国电建集团华东勘测设计研究院有限公司 | The split type jacket structure of Large marine platform and its installation method of the installation of support method are floated suitable for shallow sea water |
| CN111395294A (en) * | 2020-03-27 | 2020-07-10 | 中国海洋石油集团有限公司 | Anti-sinking plate device and using method |
| CN112112186A (en) * | 2020-09-27 | 2020-12-22 | 上海振华重工(集团)股份有限公司 | Installation method of split jacket foundation on offshore converter station |
| CN113026750A (en) * | 2021-03-19 | 2021-06-25 | 中铁大桥局集团有限公司 | Jacket positioning device |
| CN115125906A (en) * | 2022-07-11 | 2022-09-30 | 中交第一航务工程局有限公司 | Wharf with jacket structure and combined wharf |
-
2018
- 2018-09-21 CN CN201821555535.5U patent/CN209178967U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056684A (en) * | 2018-09-21 | 2018-12-21 | 中国电建集团华东勘测设计研究院有限公司 | The split type jacket structure of Large marine platform and its installation method of the installation of support method are floated suitable for shallow sea water |
| CN111395294A (en) * | 2020-03-27 | 2020-07-10 | 中国海洋石油集团有限公司 | Anti-sinking plate device and using method |
| CN112112186A (en) * | 2020-09-27 | 2020-12-22 | 上海振华重工(集团)股份有限公司 | Installation method of split jacket foundation on offshore converter station |
| CN112112186B (en) * | 2020-09-27 | 2022-02-22 | 上海振华重工(集团)股份有限公司 | Installation method of split jacket foundation on offshore converter station |
| CN113026750A (en) * | 2021-03-19 | 2021-06-25 | 中铁大桥局集团有限公司 | Jacket positioning device |
| CN113026750B (en) * | 2021-03-19 | 2022-04-15 | 中铁大桥局集团有限公司 | Jacket positioning device |
| CN115125906A (en) * | 2022-07-11 | 2022-09-30 | 中交第一航务工程局有限公司 | Wharf with jacket structure and combined wharf |
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