CN112319718A - Asymmetric semi-submersible type disassembling platform - Google Patents

Asymmetric semi-submersible type disassembling platform Download PDF

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CN112319718A
CN112319718A CN202011401076.7A CN202011401076A CN112319718A CN 112319718 A CN112319718 A CN 112319718A CN 202011401076 A CN202011401076 A CN 202011401076A CN 112319718 A CN112319718 A CN 112319718A
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platform
buoyancy tank
small
profile
submersible
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CN112319718B (en
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刘建成
徐立新
吴海建
张建
唐文献
陈文科
陈伶翔
莫刚
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China Merchants Marine Equipment Research Institute Co ltd
Jiangsu University of Science and Technology
China Merchants Heavy Industry Jiangsu Co Ltd
China Merchants Heavy Industry Shenzhen Co Ltd
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China Merchants Marine Equipment Research Institute Co ltd
Jiangsu University of Science and Technology
China Merchants Heavy Industry Jiangsu Co Ltd
China Merchants Heavy Industry Shenzhen Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/10—Arrangement of ship-based loading or unloading equipment for cargo or passengers of cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/50—Vessels or floating structures for aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/10—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy
    • B63B43/12—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy using inboard air containers or inboard floating members
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    • G06—COMPUTING; CALCULATING OR COUNTING
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    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
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Abstract

The invention provides an asymmetric semi-submersible type disassembly platform which comprises an upper hull, a buoyancy tank and stand columns, wherein the stand columns are used for connecting the upper hull and the buoyancy tank; the large buoyancy tank is correspondingly connected with the two large upright posts, and the small buoyancy tank is correspondingly connected with the two small upright posts; the top surface of the upper hull is provided with a platform operation deck, the platform operation deck is provided with a crane, the side surface of the upper hull is provided with an apron, and the upper hull is internally provided with a platform living area. The surfaces of the upright post, the crane base, the crane installation bulkhead and the buoyancy tank are all designed into the positive Gaussian curved surfaces, and the crane base, the crane installation bulkhead and the upright post are designed into three-section cross-connection cambered surface design, so that composite force transmission is realized, the buoyancy of the buoyancy tank is effectively improved, and the bearing capacity, the operation capacity and the safety of a platform hull are improved; by adopting the asymmetric arrangement of the buoyancy tanks and the stand columns and utilizing the lever principle, the ballast efficiency, the hoisting capacity and the stability in the hoisting operation process of the disassembled platform are improved.

Description

Asymmetric semi-submersible type disassembling platform
Technical Field
The invention relates to the technical field of ocean engineering equipment, in particular to an asymmetric semi-submersible type disassembling platform.
Background
With the advocation of marine environmental protection and the emergence of rules in the marine oil and gas exploitation industry, many old offshore platforms of more than 4000 tons at home and abroad need to be disassembled and recycled, and the market space is very wide. The semi-submersible type hoisting and disassembling platform is used as professional disassembling equipment, needs to have an operation range, maximum bearing capacity and operation efficiency superior to those of a conventional hoisting platform, and is not a professional disassembling platform for offshore platforms in China.
A semi-submersible platform is generally composed of an upper hull platform and a lower hull composed of two pontoons and columns, and equipment such as a crane for work is installed on a deck of the upper hull. In a conventional semi-submersible lifting platform, two buoyancy tanks of a lower hull are symmetrically arranged, and a crane for operation is also symmetrically arranged at the stern of the platform. If the platform with larger hoisting capacity adopts symmetrically arranged buoyancy tanks and upright columns, the self weight of the crane can easily cause the stability of the platform to be reduced. In order to solve the problems, some existing semi-submersible platforms adopt asymmetric design of buoyancy tanks, the volumes of the two buoyancy tanks are different, large cranes are installed on one side of the large buoyancy tank, and ballast allocation is carried out by using the asymmetric form of a ship body in the hoisting operation process so as to ensure the stability of the ship body and improve the hoisting capacity of the platform.
The offshore oil and gas platform is disassembled, hoisting operation needs to be carried out on the disassembled large-scale component, transportation and recovery need to be carried out, and the disassembled platform has hoisting capacity and needs to improve the bearing capacity and transportation capacity of the platform.
Disclosure of Invention
In order to solve the defects, the invention aims to provide a semi-submersible lifting and disassembling platform which is based on asymmetric arrangement of buoyancy tanks, and has strong lifting capacity, strong bearing capacity and large transportation capacity.
In order to achieve the purpose, the invention provides an asymmetric semi-submersible type dismantling platform which comprises an upper ship body, buoyancy tanks and stand columns, wherein the stand columns are used for connecting the upper ship body and the buoyancy tanks, the buoyancy tanks comprise two large buoyancy tanks and small buoyancy tanks with different volumes, and the stand columns comprise two large stand columns positioned on one side below the bottom of the upper ship body and two small stand columns positioned on the other side below the bottom of the upper ship body; the large buoyancy tank is correspondingly connected with the two large upright posts, and the small buoyancy tank is correspondingly connected with the two small upright posts; the top surface of the upper hull is provided with a platform operation deck, and a plurality of cranes are arranged on the platform operation deck.
Further, two air aprons for taking off and landing the helicopter are arranged on the side face of the upper hull.
Further, a platform living area is arranged inside the upper ship body.
Furthermore, the large upright post and the small upright post are respectively connected with the bottom of the upper ship body through transition cambered surfaces.
Further, the curve equation of the lateral profile of the transition arc surface is a segment of a parabola, and the parabola equation is as follows:
Figure 267620DEST_PATH_IMAGE001
。
furthermore, four propeller thrusters are installed at the bottom of the large buoyancy tank, and two propeller thrusters are installed at the bottom of the small buoyancy tank.
Furthermore, the crane comprises two heavy offshore cranes and two small cranes, the two heavy offshore cranes are coaxially arranged with the two large columns respectively at the installation positions, two cambered bulkheads are arranged in the upper hull, and two ends of each cambered bulkhead are connected with the heavy offshore cranes and the large columns respectively.
Further, the surface lateral profile of the large upright column, the surface lateral profile of the small upright column, the cambered bulkhead and the base curved surface profile of the heavy-duty offshore crane are all arc profiles, and the curve equation of the arc profiles is that
Figure 388023DEST_PATH_IMAGE002
，
Wherein a and b are shape parameters respectively, and the curve shape of the arc-shaped profile is determined by the ratio of the parameters a and b
Figure 902181DEST_PATH_IMAGE003
Jointly determining;
the long axis of the arc profile curve equation is
Figure 828549DEST_PATH_IMAGE004
Minor axis of
Figure 49446DEST_PATH_IMAGE005
Wherein:
Figure 403067DEST_PATH_IMAGE006
，
Figure 76624DEST_PATH_IMAGE007
。
further, the curve equations of the surface transverse profiles of the large buoyancy tank and the small buoyancy tank are respectively
Figure 806683DEST_PATH_IMAGE008
，
Wherein a and b are shape parameters respectively, and the curve shape of the transverse profile is determined by the ratio of the parameters a and b
Figure 678824DEST_PATH_IMAGE009
Jointly determining;
the major axis of the curve equation of the transverse profile is
Figure 78713DEST_PATH_IMAGE004
Minor axis of
Figure 567463DEST_PATH_IMAGE005
Wherein:
Figure 835633DEST_PATH_IMAGE006
，
Figure 576929DEST_PATH_IMAGE007
。
further, the curve equations of the cross-sectional profiles of the large buoyancy tank and the small buoyancy tank are respectively
Figure 741194DEST_PATH_IMAGE010
，
Wherein a and b are shape parameters respectively, and the curve shape of the arc-shaped profile is determined by the ratio of the parameters a and b
Figure 389344DEST_PATH_IMAGE009
Determined together, with a first radius of curvature ofR 1 The second radius of curvature isR 2 ；
The long axis of the arc profile curve equation is
Figure 195626DEST_PATH_IMAGE004
Minor axis of
Figure 245622DEST_PATH_IMAGE005
Wherein:
Figure 111947DEST_PATH_IMAGE006
，
Figure 247393DEST_PATH_IMAGE007
。
the invention has the beneficial effects that: the upright column, the crane base, the crane installation bulkhead and the surface of the floating box are all designed into a positive Gaussian curved surface, and the crane base, the crane installation bulkhead and the upright column are designed into three-section cross-connection cambered surface design, so that composite force transmission is realized, the buoyancy of the floating box is effectively improved, and the bearing capacity, the operation capacity and the safety of a platform hull are improved; the asymmetrical arrangement of the buoyancy tanks and the stand columns is adopted, and a lever principle is utilized to provide an asymmetrical design method for large and small buoyancy tanks, so that the ballast efficiency, the hoisting capacity and the stability in the hoisting operation process of the disassembled platform are improved; the design of hidden life district not only can improve crewman's living environment, is showing simultaneously and increases the deck operation area that opens.
Drawings
FIG. 1 is a schematic perspective view of an asymmetric semi-submersible disassembly platform according to the present invention.
Fig. 2 is a port side view of the platform shown in fig. 1.
Fig. 3 is a side view of the stern of the platform shown in fig. 1.
FIG. 4 is a starboard side view of the platform shown in FIG. 1.
Fig. 5 is a top view of the platform shown in fig. 1.
FIG. 6 is a schematic view of the curved profile of the columns, buoyancy tanks, heavy crane base and curved connecting bulkheads.
FIG. 7 is a profile curve of a stud and an arc-shaped connecting bulkhead.
Fig. 8 is a profile curve of a base of a heavy duty crane.
Fig. 9 is a transverse profile curve of the surface of a large buoyancy tank.
Fig. 10 is a transverse profile curve of the surface of a small buoyancy tank.
Fig. 11 is a schematic view of a platform hoisting operation.
Wherein: 1. the marine floating crane comprises an upper ship body, 2, upright columns, 3, a buoyancy tank, 11, a platform operation deck, 12, a heavy marine crane, 13, a cambered bulkhead, 14, an apron, 15, a platform living area, 16, a small crane, 121, a base curved surface profile, 21, a large upright column, 22, a small upright column, 211, a surface lateral profile I, 212, a transition cambered surface I, 221, a surface lateral profile II, 222, a transition cambered surface II, 31, a large buoyancy tank, 32, a small buoyancy tank, 33 and a propeller.
Detailed Description
The present invention will now be described in detail by way of exemplary embodiments with reference to the accompanying drawings, in which embodiments of the invention are described in detail.
1-5, an asymmetric semi-submersible dismantling platform for installation of the platform working equipment. Comprises an upper hull 1, a buoyancy tank 3 and a stand column 2, wherein the stand column 2 is used for connecting the upper hull 1 and the buoyancy tank 3. The upper ship body 1 serves as an operation place, the upright column 2 is used for connecting the upper ship body 1 and the buoyancy tank 3, the upright column 2 plays a role in supporting the upper ship body 1, and the buoyancy tank 3 is used for providing buoyancy and navigation power.
The top surface of the upper hull 1 is set as a platform operation deck 11, a plurality of cranes are arranged on the platform operation deck 11, two air parks 14 for taking off and landing the helicopter are arranged on the side surface of the upper hull 1, and a platform living area 15 is arranged inside the upper hull 1. In the figure 2, the left side is a ship stern part, the right side is a ship bow part, the platform living area 15 is arranged in the upper ship body 1 and is positioned below the ship bow part operation deck 11, the living area is hidden and arranged in the ship body, the operation area of the platform operation deck 11 is obviously increased, the platform operation capacity is improved, and meanwhile, the platform living area 15 is positioned in a non-operation area, so that the living condition of a crew is also obviously improved. As shown in fig. 5, on the working platform 11, two offshore heavy cranes 12 are mounted on the starboard side of the hull, small cranes are mounted on the middle positions of the port and starboard sides of the hull, and two helicopter aprons 14 are mounted on the port side of the upper hull 1.
The buoyancy tank 3 comprises a large buoyancy tank 31 and a small buoyancy tank 32 which are different in volume and are positioned at the same height. The upright post 2 comprises two large upright posts 21 positioned on the starboard side of the platform and two small upright posts 22 positioned on the port side of the platform, and the large upright posts 21 and the small upright posts 22 have the same height and different sizes. The large buoyancy tank 31 is correspondingly connected with the two large upright posts 21, and the small buoyancy tank 32 is correspondingly connected with the two small upright posts 22. The large upright post 21 is connected with the bottom of the upper ship body 1 through a transition cambered surface I212. The small upright post 22 is connected with the bottom of the upper ship body 1 through a transition arc II 222. The joint is provided with a flange structure for reinforcement.
The lateral profile curve equation of the transition arc surface I212 of the large upright post 21 and the transition arc surface II 222 of the small upright post 22 is one section of a parabola, and the parabola equation is as follows:
Figure 857366DEST_PATH_IMAGE001
。
four propeller thrusters 33 are installed at the bottom of the large buoyancy tank 31, and two propeller thrusters 33 are installed at the bottom of the small buoyancy tank 32 for providing navigation power for the platform.
The interior of the upper hull 1 is provided with cabins with different volumes and different purposes, such as ballast tanks, living cabins, power cabins and the like, through partition boards.
The crane comprises two heavy offshore cranes 12 and two small cranes 16, the two heavy offshore cranes 12 are coaxially arranged with two large upright posts 21 respectively, two cambered bulkheads 13 are arranged in the upper hull 1, and two ends of the cambered bulkheads 13 are connected with the heavy offshore cranes 12 and the large upright posts 21 respectively to play roles of connection and support.
The surface lateral profile I211 of the large upright post 21, the surface lateral profile II 221 of the small upright post 22, the cambered bulkhead 13 for connecting the large upright post 21 with the base of the heavy-duty crane 12 and the base curved profile 121 of the heavy-duty offshore crane 12 are all cambered curves of cambered profiles.
As shown in fig. 6, the arc curve equation of the arc profile is:
the arc profile equation is
Figure 761868DEST_PATH_IMAGE011
。
The arc profile equation after deformation is:
Figure 64673DEST_PATH_IMAGE012
。
wherein a and b are shape parameters respectively, and the curve contour shape is determined by the ratio of the parameters a and b
Figure 421836DEST_PATH_IMAGE003
Determined together, with a first radius of curvature ofR 1 The second radius of curvature isR 2 。
The major axis of the curve of the arc profile is
Figure 507604DEST_PATH_IMAGE004
Minor axis of
Figure 594509DEST_PATH_IMAGE005
Wherein:
Figure 68215DEST_PATH_IMAGE006
，
Figure 912675DEST_PATH_IMAGE007
。
as shown in fig. 7, the curve equations of the surface lateral profile i 211 of the large column 21, the surface lateral profile ii 221 of the small column 22 and the cambered bulkhead 13 for connecting the large column 21 and the base of the heavy offshore crane 12 are shown, where =0.45, the curve corresponding equation is:
Figure DEST_PATH_IMAGE013
，
corresponding to the long shaft
Figure 268045DEST_PATH_IMAGE004
Minor axis
Figure 271773DEST_PATH_IMAGE005
Respectively as follows:
Figure 791747DEST_PATH_IMAGE014
，
Figure 248137DEST_PATH_IMAGE015
，
as shown in fig. 7, intercept from-x 1Tox 1The curves of (1) are a section of curve with black and thick in the figure, which is taken as a surface lateral profile I211 of the large upright post 21, a surface lateral profile II 221 of the small upright post 22 and a cambered bulkhead 13 connecting the large upright post 21 and the base of the heavy offshore crane 12.
The large upright post 21, the small upright post 22, the cambered bulkhead 13 and the base of the heavy offshore crane 12 are arranged at the same axial line position, and the surfaces of the large upright post 21, the small upright post 22, the cambered bulkhead 13 and the base of the heavy offshore crane 12 are designed by adopting cambered surfaces, so that composite force transmission can be formed in the axial direction, the bearing capacity of the large upright post 21 and the small upright post 22 is greatly enhanced, the working stability of the heavy offshore crane 12 is improved, and the hoisting capacity of a dismantling platform is obviously improved.
As shown in FIG. 8, the curve is a curved equation of the curved profile 121 of the base of the heavy marine crane 12, wherein
Figure 878969DEST_PATH_IMAGE003
If =0.45, the curve corresponding equation is:
Figure 471625DEST_PATH_IMAGE016
，
corresponding to the long shaft
Figure 162500DEST_PATH_IMAGE004
Minor axis
Figure 106185DEST_PATH_IMAGE005
Respectively as follows:
Figure 540709DEST_PATH_IMAGE017
，
Figure 253450DEST_PATH_IMAGE018
，
as shown in fig. 8, intercept fromx 2Tox 1The curved line segment of (a), which is a black and thick curved line segment in the figure, is used as the curved contour 121 of the base of the heavy-duty marine crane 12.
As shown in FIG. 9, the curve is the equation of the curve of the lateral profile 312 of the surface of the large buoyancy tank 31, wherein
Figure 646385DEST_PATH_IMAGE003
If =0.63, the curve correspondence equation is:
Figure 952733DEST_PATH_IMAGE019
，
corresponding to the long shaft
Figure 50002DEST_PATH_IMAGE004
Minor axis
Figure 758195DEST_PATH_IMAGE005
Respectively as follows:
Figure DEST_PATH_IMAGE020
，
Figure 59382DEST_PATH_IMAGE021
，
as shown in fig. 9, the curves relate toxAxisymmetric, forming a closed curve, and cutting outx 1Tox 1And is located atr<The curve segment in the area 0, i.e. a segment of the curve in the thin line part of the figure, is removed, and the remaining part of the curve is used as the surface transverse profile 312 of the large buoyancy tank 31.
As shown in FIG. 10, the curve is the equation of the lateral profile 322 of the surface of the small buoyancy tank 32, wherein
Figure 977659DEST_PATH_IMAGE003
If =0.35, the curve correspondence equation is:
Figure DEST_PATH_IMAGE022
，
corresponding to the long shaft
Figure 488406DEST_PATH_IMAGE004
Minor axis
Figure 910160DEST_PATH_IMAGE005
Respectively as follows:
Figure 113739DEST_PATH_IMAGE023
，
Figure 925838DEST_PATH_IMAGE024
，
as shown in fig. 10, the curves relate toxAxisymmetric, forming a closed curve, and cutting outx 1Tox 1And is located atr<The curved line segment of the 0 region, i.e., a segment of the curve of the thin line portion in the figure, is removed, and the remaining portion of the curve is used as the surface lateral profile 322 of the small buoyancy tank 32. The transverse profiles of the surfaces of the large buoyancy tank 31 and the small buoyancy tank 32 are designed into the curves, so that the volume of the large buoyancy tank and the small buoyancy tank is effectively increased, and the lifting is realizedIts buoyancy, thereby contributing to the maximum sling weight of the platform.
The disassembly platform is designed in an asymmetric structure, and a corresponding design method can be provided for the design of the large buoyancy tank and the small buoyancy tank of the platform according to the lever principle:
as shown in FIG. 11, during the hoisting process, the hoisting mass of the heavy crane 12 ismThe heavy object is suspended outside the right board of the platform, and the center of mass of the platform is positionedOAt the point of the above-mentioned process,F 1 andF 2 the large buoyancy tank 31 and the small buoyancy tank 32 are respectively subjected to buoyancy. By utilizing the lever principle, the large buoyancy tank 31 is taken as a fulcrum, in order to ensure the balance of the ship body, two sides of the fulcrum, namely two sides of the large buoyancy tank 31, need to be ensured to be stressed in balance, and the two sides of the fulcrum have a resultant force in the vertical direction
Figure 630488DEST_PATH_IMAGE025
And resultant moment
Figure DEST_PATH_IMAGE026
Is 0:
Figure 578853DEST_PATH_IMAGE027
Figure DEST_PATH_IMAGE028
can be pushed out by the above two typesF 1 AndF 2 the relationship of (1):
Figure 484492DEST_PATH_IMAGE029
wherein:
Figure DEST_PATH_IMAGE030
，
Figure 721569DEST_PATH_IMAGE031
，V 1 、V 2 the volume of the big buoyancy tank 31 and the small buoyancy tank 32 are respectively, and the two buoyancy tanks have the same length and are composed ofThis can result in:
Figure DEST_PATH_IMAGE032
whereinS 1 、S 2 The cross-sectional areas of the large buoyancy tank 31 and the small buoyancy tank 32 are provided. From the cross-sectional profile curves of the large and small buoyancy tanks 31, 32 shown in fig. 9, 10, respectively, it can be derived:
the cross-sectional profile curve equation of the large buoyancy tank 31 is
Figure 370857DEST_PATH_IMAGE033
，
The cross-sectional profile curve equation of the small buoyancy tank 32 is
Figure DEST_PATH_IMAGE034
。
In the design of asymmetric arrangement of the large buoyancy tank 31 and the small buoyancy tank 32, the buoyancy relation of the large buoyancy tank and the small buoyancy tank and the shape parameters of the cross section contour curve of the buoyancy tank can be determined according to the three formulas, so that the overall stability of the platform under the working condition is ensured.

Claims (10)

1. The utility model provides a platform is disassembled to asymmetric semi-submerged formula, includes hull, flotation tank and stand, the stand is used for connecting hull and flotation tank, its characterized in that: the buoyancy tank comprises a large buoyancy tank and a small buoyancy tank which are different in size, and the stand columns comprise two large stand columns positioned on one side below the bottom of the upper hull and two small stand columns positioned on the other side below the bottom of the upper hull; the large buoyancy tank is correspondingly connected with the two large upright posts, and the small buoyancy tank is correspondingly connected with the two small upright posts; the top surface of the upper hull is provided with a platform operation deck, and a plurality of cranes are arranged on the platform operation deck.
2. The asymmetric semi-submersible disassembly platform of claim 1, wherein: two air stopping aprons for taking off and landing the helicopter are arranged on the side surface of the upper hull.
3. The asymmetric semi-submersible disassembly platform of claim 1, wherein: and a platform living area is arranged in the upper ship body.
4. The asymmetric semi-submersible disassembly platform of claim 1, wherein: the large upright post and the small upright post are respectively connected with the bottom of the upper hull through transition cambered surfaces.
5. The asymmetric semi-submersible dismantling platform of claim 4, wherein: the curve equation of the lateral profile of the transition cambered surface is one section of a parabola, and the parabola equation is as follows:
Figure 640819DEST_PATH_IMAGE001
。
6. the asymmetric semi-submersible disassembly platform of claim 1, wherein: four propeller thrusters are installed at the bottom of the large buoyancy tank, and two propeller thrusters are installed at the bottom of the small buoyancy tank.
7. The asymmetric semi-submersible disassembly platform of claim 1, wherein: the crane comprises two heavy offshore cranes and two small cranes, the installation positions of the two heavy offshore cranes are coaxially arranged with the two large upright posts respectively, two cambered bulkheads are arranged in the upper ship body, and two ends of each cambered bulkhead are connected with the heavy offshore cranes and the large upright posts respectively.
8. The asymmetric semi-submersible disassembly platform of claim 1 or 7, wherein: the surface lateral profile of the large upright column, the surface lateral profile of the small upright column, the cambered bulkhead and the base curved surface profile of the heavy-duty offshore crane are all arc profiles, and the curve equation of the arc profiles is
Figure 993434DEST_PATH_IMAGE002
，
Wherein a and b are shape parameters respectively, and the curve shape of the arc-shaped profile is determined by the ratio of the parameters a and b
Figure 569210DEST_PATH_IMAGE003
Jointly determining;
the long axis of the arc profile curve equation is
Figure 471307DEST_PATH_IMAGE004
Minor axis of
Figure 499437DEST_PATH_IMAGE005
Wherein:
Figure 323036DEST_PATH_IMAGE006
，
Figure 711292DEST_PATH_IMAGE007
。
9. the asymmetric semi-submersible disassembly platform of claim 1, wherein: the curve equations of the surface transverse profiles of the large buoyancy tank and the small buoyancy tank are respectively
Figure 671158DEST_PATH_IMAGE008
，
Wherein a and b are shape parameters respectively, and the curve shape of the transverse profile is determined by the ratio of the parameters a and b
Figure 604610DEST_PATH_IMAGE009
Jointly determining;
the major axis of the curve equation of the transverse profile is
Figure 181085DEST_PATH_IMAGE010
Minor axis of
Figure 126694DEST_PATH_IMAGE011
Wherein:
Figure 488536DEST_PATH_IMAGE012
，
Figure 373316DEST_PATH_IMAGE013
。
10. the asymmetric semi-submersible disassembly platform of claim 1, wherein: the curve equations of the cross section profiles of the large buoyancy tank and the small buoyancy tank are respectively
Figure 187819DEST_PATH_IMAGE015
，
Wherein a and b are shape parameters respectively, and the curve shape of the arc-shaped profile is determined by the ratio of the parameters a and b
Figure 652298DEST_PATH_IMAGE016
Determined together, with a first radius of curvature ofR 1 The second radius of curvature isR 2 ；
The long axis of the arc profile curve equation is
Figure 586756DEST_PATH_IMAGE010
Minor axis of
Figure 376858DEST_PATH_IMAGE011
Wherein:
Figure 662346DEST_PATH_IMAGE012
，
Figure 943898DEST_PATH_IMAGE013
。
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WO2022116818A1 (en) * 2020-12-04 2022-06-09 招商局重工（江苏）有限公司 Asymmetric semi-submersible disassembly platform
CN114954800A (en) * 2022-05-19 2022-08-30 大连理工大学 LNG switching barge of small waterplane asymmetric double-body type

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CN114954800A (en) * 2022-05-19 2022-08-30 大连理工大学 LNG switching barge of small waterplane asymmetric double-body type

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