CN112319733B - Lower floating body segmentation dividing method - Google Patents
Lower floating body segmentation dividing method Download PDFInfo
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- CN112319733B CN112319733B CN202011509577.7A CN202011509577A CN112319733B CN 112319733 B CN112319733 B CN 112319733B CN 202011509577 A CN202011509577 A CN 202011509577A CN 112319733 B CN112319733 B CN 112319733B
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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
- B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
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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
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/10—Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
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- Butt Welding And Welding Of Specific Article (AREA)
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Abstract
The invention relates to a lower floating body segmentation dividing method, which is characterized by comprising the following steps of: the specific dividing method is as follows: s1: dividing functions; s2: dividing a bow region and a stern region structure; s3: dividing a middle flat bottom area; in the invention, the construction is carried out by independently dividing the surrounding well structure part on the lower floating body, so that the construction precision of the surrounding well is ensured; dividing the rest areas except for the surrounding well structure sections of the bow area and the stern area into two sections of structures; the middle flat bottom area is divided into 2 sections in the length direction and 5 sections in the width direction; dividing into two sections in the height direction; the overhead welding in the subsequent manufacturing stage is reduced conveniently; the construction height is reduced; the workload of setting up the scaffold is reduced.
Description
Technical Field
The invention relates to the technical field of self-elevating ocean platform construction, in particular to a lower floating body segmentation dividing method.
Background
The ocean platform mainly refers to a self-elevating ocean platform, a semi-submersible ocean platform, a drilling ship, other platforms and the like; the self-elevating ocean platform mainly comprises a sinking pad, pile legs, an elevating device, a platform (module) and the like.
The self-elevating ocean platform consists of an upper hull and a lower floating body, and 4 cylindrical spuds are arranged between the upper hull and the lower hull. The joint of the upper hull and the spud leg is provided with a gear rack type lifting system. The joint of the lower floating body and the pile leg is provided with a locking system. The lower floating body adopts a rectangular type. The design concept is that the ship can lower the lower floating body structure to the seabed surface layer to sit on the seabed through the spud leg during operation, the lower floating body adopts a large-scale watertight structure to provide huge buoyancy so as to balance most of the whole ship weight, and the sitting pressure is greatly reduced so as to adapt to seabed soft soil geology. Simultaneously, the pile legs penetrate through the lower floating body and are deeply inserted into the seabed, so that the effects of stabilizing the whole ship and resisting sliding are achieved. The spud legs push the upper ship body away from the water surface, avoid surge and provide a stable platform for operation. The lower floating body is internally divided into a plurality of cabins, and ballast water can be injected or discharged from the cabins, so that the buoyancy of the lower floating body is changed, and the stability of the whole ship is maintained when the lower floating body is lowered.
The ship body/platform is lifted off the water surface through 4/3 large pile shoes through piles, the surge is avoided, a stable platform is provided for operation, and the 4/3 pile shoes of the platform or the ship are used as independent individuals and are independently built and are transported to a set position for installation after the construction is finished. The lower floating body belongs to an internationally initiated ultra-large bottom-sitting structure, and is equivalent to the combination of four/three pile shoes of a conventional ship as a whole.
Disclosure of Invention
The invention aims to solve the technical problem of providing a lower floating body segmentation dividing method which can solve the problem of structure segmentation in the segment construction of a lower floating body of a structure and can reduce the subsequent assembly difficulty.
In order to solve the technical problems, the technical scheme of the invention is as follows: a lower floating body sectionalized dividing method comprises a box-type plate frame structure, wherein the whole lower floating body is rectangular; a transverse bulkhead, a longitudinal bulkhead and a reinforcing structure are distributed in the inner part; the innovation point is that: the specific dividing method is as follows:
s1: functional division: according to the functional area and the body structure of the lower floating body, the position is initially divided; the device is divided into a bow area, a stern area and a middle flat bottom area;
s2: dividing a bow region and a stern region structure: according to the existence of the surrounding well structure in the bow area and the stern area of the lower floating body, the surrounding well structure is constructed as a whole to ensure the manufacturing precision of the surrounding well structure, so that the surrounding well structure is divided as an independent sectional structure; the straight plate is easier and more controlled than the inclined plate when being folded, so that the surrounding well area is divided independently; the areas of the bow area and the stern area except for the surrounding well structural sections are divided into two sections according to the structural shape, the folding welding quantity is reduced, and the lifting and workshop sizes of shipyards are divided into two sections;
s3: middle flat bottom area division: the middle flat bottom area is divided into an upper structure and a lower structure in the height direction according to the low-altitude operation assembly principle, and the height of the lower structure is 1.8-2.1m; in the length direction, the split type flat bottom structure is at least provided with a left structure and a right structure according to the principle of equal split manufacturing and assembly, and the dividing position is the middle position of the middle flat bottom area; the bottom is built positively, and the deck is built reversely; overhead welding in accordance with a reduced manufacturing stage; the construction height is reduced, and the safety of personnel is ensured; the workload of setting up the scaffold is reduced; a folding stage, which reduces the principle of personnel ascending; and in order to ensure total longitudinal bending, reduce transverse welding lines and reduce the welding quantity of folding, and meanwhile, the objective requirements of lifting and workshop size divide the middle flat bottom area into at least 5 sections in the width direction.
Furthermore, the surrounding of the surrounding well structure is divided into sections of the surrounding well structure by longitudinal and transverse cabin wall plates, so that the precision of the surrounding well structure can be better ensured in the section manufacturing and transporting processes.
Further, the regions of the bow region and the stern region except for the surrounding well structure are divided into two sections, and the width direction of the sections is 9-13m according to the principle of the joint intersection with the middle flat bottom region.
Further, the two sectional length deviations in the length direction of the middle flat bottom region division are not more than 0.5m; the 5 segments in the width direction have a width of 8-10.5m.
Further, the height from the bottom plate direction is a safe construction height and is not more than 2.1m.
The invention has the advantages that:
1) In the invention, the construction is carried out by independently dividing the surrounding well structure part on the lower floating body, so that the construction precision of the surrounding well is ensured; dividing the rest areas except for the surrounding well structure sections of the bow area and the stern area into two sections of structures; the middle flat bottom area is divided into 2 sections in the length direction and 5 sections in the width direction; dividing into two sections in the height direction; the overhead welding in the subsequent manufacturing stage is reduced conveniently; the construction height is reduced; the workload of setting up the scaffold is reduced.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a top view of a division structure of a lower floating body division method according to the present invention.
Fig. 2 is a side view of a division structure of a lower floating body division method according to the present invention.
Fig. 3 is a sectional view of a division structure of a lower floating body division method of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The lower floating body is formed by a box-type plate frame structure and is rectangular as a whole, and the lower floating body is divided into sections as shown in figures 1 to 3; the upper surface of the lower floating body is 75m long, 48m wide and 6m deep; a transverse bulkhead, a longitudinal bulkhead and a reinforcing structure are distributed in the inner part; the specific dividing method is as follows:
s1: functional division: according to the functional area and the body structure of the lower floating body, the position is initially divided; is divided into a bow area 1, a stern area 2 and a middle flat bottom area 3.
S2: the structure of the bow area 1 and the stern area 2 is divided: according to the existence of the surrounding well structure in the bow area and the stern area of the lower floating body, the surrounding well structure is constructed as a whole in order to ensure the manufacturing precision of the surrounding well structure, so that the surrounding well structure 4 is divided as an independent sectional structure; the straight plate is easier and more controlled than the inclined plate when being folded, so that the surrounding well area is divided into four structures with the length of 15.75m and the width of 13.18m and the depth of 6m; the areas of the bow area 1 and the stern area except for the 2 surrounding well structural sections are divided into two sections according to the structural shape, the reduction of the folding welding quantity and the lifting of a shipyard and the size of a workshop.
S3: the middle flat bottom area 3 is divided: the middle flat bottom area 3 is 6m in height, the whole part is additionally provided with sections at 2100mm, the bottom is built positively, and the deck is built reversely; overhead welding in accordance with a reduced manufacturing stage; the construction height is reduced, and the safety of personnel is ensured; the workload of setting up the scaffold is reduced; the folding stage is that the construction at 2.1 meters belongs to low-altitude operation, so that the principle of personnel climbing is reduced; and in order to ensure total longitudinal bending, reduce transverse welding lines and reduce the welding quantity of folding, and meanwhile, the objective requirements of lifting and workshop size divide the middle flat bottom area into 5 segments with the width and 2 segments in the length direction.
The surrounding of the surrounding well structure is divided into sections of the surrounding well structure by longitudinal and transverse cabin wall plates, so that the precision of the surrounding well structure can be better ensured in the section manufacturing and transporting process.
The two sectional widths of the areas of the bow area 1 and the stern area 2 except the surrounding well structural section are respectively as follows: 9.16m and 12.54m.
The two sectional lengths of the middle flat bottom area 3 in the length direction are respectively 22m and 21.5m; the 5 sectional widths in the width direction are respectively: 8.825m, 10.5m, 9.35m, 10.5m, 8.825m.
The middle flat bottom area 3 is divided in height by 3.9m from the deck direction and by 2.1m from the floor direction.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A lower floating body sectionalized dividing method comprises a box-type plate frame structure, wherein the whole lower floating body is rectangular; a transverse bulkhead, a longitudinal bulkhead and a reinforcing structure are distributed in the inner part; the method is characterized in that: the specific dividing method is as follows:
s1: functional division: according to the functional area and the body structure of the lower floating body, the position is initially divided; the device is divided into a bow area, a stern area and a middle flat bottom area;
s2: dividing a bow region and a stern region structure: according to the existence of the surrounding well structure in the bow area and the stern area of the lower floating body, the surrounding well structure is constructed as a whole to ensure the manufacturing precision of the surrounding well structure, so that the surrounding well structure is divided as an independent sectional structure; the straight plate is easier and more controlled than the inclined plate when being folded, so that the surrounding well area is divided independently; the areas of the bow area and the stern area except for the surrounding well structural sections are divided into two sections according to the structural shape, the folding welding quantity is reduced, and the lifting and workshop sizes of shipyards are divided into two sections;
s3: middle flat bottom area division: the middle flat bottom area is divided into an upper structure and a lower structure in the height direction according to the low-altitude operation assembly principle, and the height of the lower structure is 1.8-2.1m; in the length direction, the split type flat bottom structure is at least provided with a left structure and a right structure according to the principle of equal split manufacturing and assembly, and the dividing position is the middle position of the middle flat bottom area; the bottom is built positively, and the deck is built reversely; overhead welding in accordance with a reduced manufacturing stage; the construction height is reduced, and the safety of personnel is ensured; the workload of setting up the scaffold is reduced; a folding stage, which reduces the principle of personnel ascending; and in order to ensure total longitudinal bending, reduce transverse welding lines and reduce the welding quantity of folding, and meanwhile, the objective requirements of lifting and workshop size divide the middle flat bottom area into at least 5 sections in the width direction.
2. The method for sectioning a lower floating body according to claim 1, wherein: the surrounding of the surrounding well structure is divided into sections of the surrounding well structure by longitudinal and transverse cabin wall plates, so that the precision of the surrounding well structure can be better ensured in the section manufacturing and transporting processes.
3. The method for sectioning a lower floating body according to claim 1, wherein: the division of the areas of the bow area and the stern area except for the surrounding well structure sections is divided into two sections, and the width direction of the sections is 9-13m according to the principle of the intersection of the sections with the middle flat bottom area.
4. The method for sectioning a lower floating body according to claim 1, wherein: the two sectional length deviations in the length direction of the middle flat bottom region division are not more than 0.5m; the 5 segments in the width direction have a width of 8-10.5m.
5. The method for sectioning a lower floating body according to claim 1, wherein: the height from the bottom plate direction is the safe construction height and is not more than 2.1m.
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| CN202011509577.7A CN112319733B (en) | 2020-12-18 | 2020-12-18 | Lower floating body segmentation dividing method |
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| CN202011509577.7A CN112319733B (en) | 2020-12-18 | 2020-12-18 | Lower floating body segmentation dividing method |
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| CN112319733B true CN112319733B (en) | 2023-05-16 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6809908A (en) * | 1967-07-13 | 1969-01-15 | ||
| WO2013071668A1 (en) * | 2011-11-15 | 2013-05-23 | 江苏大学 | Large-size floating state manufacturing method for marine engineering equipment |
| CN204527564U (en) * | 2015-02-02 | 2015-08-05 | 中集海洋工程研究院有限公司 | Semi-submerged platform and lower buoyancy aid thereof |
| WO2018072582A1 (en) * | 2016-10-20 | 2018-04-26 | 南通振华重型装备制造有限公司 | Pile leg utilized in ju2000e self-elevating drilling platform, and method of installing pile shoe |
| CN109552554A (en) * | 2018-10-29 | 2019-04-02 | 上海振华重工(集团)股份有限公司 | A kind of segmentation division methods for from the cutter suction dredger that navigates |
| CN109552557A (en) * | 2018-10-29 | 2019-04-02 | 上海振华重工(集团)股份有限公司 | A kind of segmentation division methods for from the cutter suction dredger that navigates |
-
2020
- 2020-12-18 CN CN202011509577.7A patent/CN112319733B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6809908A (en) * | 1967-07-13 | 1969-01-15 | ||
| WO2013071668A1 (en) * | 2011-11-15 | 2013-05-23 | 江苏大学 | Large-size floating state manufacturing method for marine engineering equipment |
| CN204527564U (en) * | 2015-02-02 | 2015-08-05 | 中集海洋工程研究院有限公司 | Semi-submerged platform and lower buoyancy aid thereof |
| CN106143818A (en) * | 2015-02-02 | 2016-11-23 | 中集海洋工程研究院有限公司 | Middle deep water semi-submersible drilling platform |
| WO2018072582A1 (en) * | 2016-10-20 | 2018-04-26 | 南通振华重型装备制造有限公司 | Pile leg utilized in ju2000e self-elevating drilling platform, and method of installing pile shoe |
| CN109552554A (en) * | 2018-10-29 | 2019-04-02 | 上海振华重工(集团)股份有限公司 | A kind of segmentation division methods for from the cutter suction dredger that navigates |
| CN109552557A (en) * | 2018-10-29 | 2019-04-02 | 上海振华重工(集团)股份有限公司 | A kind of segmentation division methods for from the cutter suction dredger that navigates |
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| CN112319733A (en) | 2021-02-05 |
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