CN112298450B - Structure for reducing fatigue of bulkhead anchoring flat steel of LNG ship - Google Patents
Structure for reducing fatigue of bulkhead anchoring flat steel of LNG ship Download PDFInfo
- Publication number
- CN112298450B CN112298450B CN202011004744.2A CN202011004744A CN112298450B CN 112298450 B CN112298450 B CN 112298450B CN 202011004744 A CN202011004744 A CN 202011004744A CN 112298450 B CN112298450 B CN 112298450B
- Authority
- CN
- China
- Prior art keywords
- plate
- bulkhead
- flat steel
- anchoring
- anchoring flat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/14—Hull parts
- B63B3/56—Bulkheads; Bulkhead reinforcements
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a structure for reducing fatigue of a bulkhead anchoring flat steel of an LNG ship, wherein a liquid cabin surface of a bulkhead plate is provided with a flat steel for anchoring an insulation box, the reverse side of the liquid cabin surface is provided with a reinforcing structure, the liquid cabin surface at least comprises a first anchoring flat steel vertically arranged on a broadside and a second anchoring flat steel horizontally arranged on a cabin top and/or a cabin bottom, and the reinforcing structure comprises: the first anchoring flat steel and the horizontal bulkhead reinforcing rib on the back of the first anchoring flat steel are crossed in projection, and the second anchoring flat steel and the horizontal bulkhead reinforcing rib on the back of the second anchoring flat steel are parallel to each other; and one end of the first toggle plate is connected with the outer plate, and the other end of the first toggle plate is connected with the horizontal bulkhead reinforcing rib. The invention effectively improves the strength of the reinforcing structure after the flat iron is anchored on the bulkhead.
Description
Technical Field
The invention belongs to the technical field of ship design and manufacturing, and particularly relates to a structure for reducing fatigue of a bulkhead anchoring flat steel of an LNG ship.
Background
The film type NO.96LNG ship liquid cargo tank corner is fixed with an anchoring flat iron on the liquid cargo tank surface due to the requirement of clamping an insulation tank, and meanwhile, a reverse-jacking reinforcing structure is arranged in an isolated empty tank area on the reverse side. In 2016 edition of IGC Code published by International maritime organization IMO, higher requirements are provided for a fatigue node of an anchoring flat iron, and the prior reinforcing structure of a simple toggle plate cannot meet the increase of the requirements, so that a reverse-vertex reinforcing structure needs to be rearranged to meet the requirements of fatigue.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a structure for reducing the fatigue of a bulkhead anchoring flat steel of an LNG ship.
In order to realize the purpose, the invention adopts the following technical scheme:
a structure for reducing fatigue of a bulkhead anchoring flat steel of an LNG ship, flat steel used for anchoring an insulation box is arranged on a liquid cabin surface of a bulkhead plate, a reinforcing structure is arranged on the reverse side of the liquid cabin surface, the liquid cabin surface at least comprises a first anchoring flat steel vertically arranged on a broadside and a second anchoring flat steel horizontally arranged on a cabin top and/or a cabin bottom, and the reinforcing structure comprises: the first anchoring flat steel and the horizontal bulkhead reinforcing rib on the back surface of the first anchoring flat steel are crossed in projection cross, and the second anchoring flat steel and the horizontal bulkhead reinforcing rib on the back surface of the second anchoring flat steel are parallel to each other; and one end of the first toggle plate is connected with the outer plate, and the other end of the first toggle plate is connected with the bulkhead horizontal reinforcing rib.
Preferably, the anchor flat steel comprises an inner layer and an outer layer, and the reinforcing structure comprises: and the bulkhead upper part reinforcing rib and the second anchoring flat steel positioned at the upper inner layer are symmetrically arranged at two sides of the bulkhead plate.
Preferably, the reinforcing structure comprises: the inclined reinforcing ribs are arranged on the reverse side of the liquid cabin surface of the cabin plate in parallel, each inclined reinforcing rib is arranged between two adjacent first toggle plates in the ship width direction, the inclined reinforcing ribs are arranged between the outer plate and the reinforcing ribs on the upper portion of the cabin wall in the ship height direction, and inclined ends of the inclined reinforcing ribs point to the outer plate.
Preferably, a thick inserting plate is arranged on the bulkhead plate at the lower part, and the thick inserting plate extends from the outer plate to the first bulkhead horizontal reinforcing rib at the lower part in the ship height direction.
Preferably, the construction method of the thick inserting plate comprises the following steps: determining a region for inserting a thick plate on the bulkhead plate; cutting off the original bulkhead plate of the determined area; and welding the thick socket plate in the region.
Preferably, the tank deck comprises a third obliquely arranged anchoring flat steel, and the corresponding reinforcing structure comprises: an inner plate disposed parallel to the outer plate; and one end of the second toggle plate is connected with the outer plate, the other end of the second toggle plate is connected with the inner plate, and the main body of the second toggle plate is quadrilateral.
Preferably, the thickness of the bulkhead upper reinforcing rib is greater than the thickness of the second anchoring flat steel.
Compared with the prior art, the invention has the following beneficial effects: the strength of the reinforcing structure after the flat iron is anchored on the bulkhead is effectively improved, and the fatigue of the reinforcing structure is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic sectional view at a bulkhead plate.
Fig. 2 isbase:Sub>A schematic cross-sectional view atbase:Sub>A-base:Sub>A in fig. 1, where the left side of the bulkhead plate is the tank area and the right side of the bulkhead plate is the isolated empty tank area.
Fig. 3 is a schematic cross-sectional view at B-B in fig. 1.
Fig. 4 is a schematic cross-sectional view at C-C in fig. 1.
Fig. 5 is a schematic cross-sectional view at D-D in fig. 1.
The structure comprises an upper bulkhead stringer 1, a lower bulkhead stringer 2, an upper bulkhead reinforcing rib 3, a horizontal bulkhead reinforcing rib 4, a toggle plate 5, a bevel reinforcing rib 6, a cut thick plate 7, a bulkhead plate 8, an anchoring flat iron 10, an inner shell deck 11, an upper bevel side plate 12, an inner longitudinal wall plate 13, a lower bevel side plate 14, an inner bottom plate 15 and a bevel truss toggle plate 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1-5, this example provides the following embodiments.
A joint strengthening structure for reducing fatigue of a bulkhead anchoring flat steel of an LNG ship comprises an upper bulkhead stringer 1, a lower bulkhead stringer 2, a bulkhead horizontal reinforcing rib 4, a bulkhead upper reinforcing rib 3, a bevel reinforcing rib 6, a toggle plate 5 and a bottom inserted thick plate 7. The outer panels are an inner shell deck 11 on the upper side, an inner bottom panel 15 on the lower side, an upper deckle 12 on the upper deckle side and a lower deckle 14 on the lower deckle side.
The inner panel is an upper bulkhead stringer 1 on the upper skew side and a lower bulkhead stringer 2 on the lower skew side. And aiming at the reinforcement change brought by the new specification updating requirement, the fatigue stress of the anchoring flat iron is reduced by using different reinforcement modes.
In the bottom transverse bulkhead area, the pressure brought by liquid cargo is larger in the bottom area of the transverse bulkhead, the thick inserting plate 7 needs to be arranged according to the area where the anchoring flat iron is arranged, and the thickness of the thick inserting plate 7 is larger than that of the common bulkhead so as to resist the adverse effect caused by the increase of the stress at the position.
The number of the toggle plates 5 is kept consistent according to the number of the longitudinal bones of the inner bottom, and the toggle plates are crossed with the two anchoring flat irons 10 on the reverse side.
The parallel position of the lower inclined side plate 14 is provided with a lower cabin wall inclined truss 2, and meanwhile, an inclined truss bracket 16 which is arranged in an inclined mode is arranged and intersected with two anchor 10 flat irons on the reverse side at a certain angle, the inclined truss bracket 16 is different from a common bracket in shape and is quadrilateral, and the lower inclined side plate 14 and the lower cabin wall inclined truss 2 are connected.
In the whole bottom area, the frame structure consisting of the inserted thick plate 7, the bulkhead reinforcing ribs 4, the lower bulkhead inclined truss 2 and the toggle plates 5 can well relieve the fatigue stress level of the anchoring flat iron in the bottom area.
At the middle and side position of the bulkhead close to the side of the board, the fatigue stress is not large, so that special reinforcement can be omitted, the original transverse bulkhead reinforcing rib 4 is used as reinforcement and is crossed with the two anchoring flat irons 10 on the back side, and the bulkhead reinforcing rib 4 is directly welded on the inner longitudinal wall plate 13.
The upper part of the bulkhead is under pressure of liquid cargo attack and is different from the bottom.
An upper bulkhead stringer 1 is arranged at the position parallel to the upper diagonal side plate 12, and a diagonal stringer bracket 16 which is obliquely arranged is arranged and intersects with the anchoring flat iron 10 at a certain angle, and the diagonal stringer bracket 16 is connected with the upper diagonal side plate 12 and the upper bulkhead diagonal stringer 1.
In the upper part of the bulkhead, between the horizontal bulkhead stiffeners 4 and the inner shell deck 11, toggle plates 5 are arranged, one end of each toggle plate 5 is aligned with the inner shell deck 11, the other end is connected to the bulkhead stiffeners 4, and between the stiffeners, on the opposite side of the anchor flat 10, there is arranged the upper bulkhead stiffener 3 aligned therewith, the thickness of the stiffener is greater than that of the anchor flat 10 for centering, and the fillets of the upper bulkhead stiffener 3 are slightly larger than the normal fillets for ensuring sufficient centering requirements. Since the pressure at the upper part of the bulkhead is under the influence of liquid cargo attack, a beveled reinforcing rib 6 is arranged between the reinforcing rib 3 at the upper part of the bulkhead and the deck 11 of the inner shell between the toggle plates 5 and intersects with the anchoring flat iron 10 at the reverse side in a crossed manner to relieve the fatigue stress of the other anchoring flat iron 10. The inclined reinforcing ribs 6 avoid hard spots caused by strengthening the outer layer anchoring flat steel by arranging toggle plates.
Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and that such modifications and improvements are within the spirit and scope of the invention.
Claims (5)
1. A structure for reducing fatigue of a bulkhead anchoring flat steel of an LNG ship, flat steel used for anchoring an insulation box is arranged on a liquid cabin surface of a bulkhead plate, a reinforcing structure is arranged on the reverse side of the liquid cabin surface, the liquid cabin surface at least comprises a first anchoring flat steel vertically arranged on a broadside and a second anchoring flat steel horizontally arranged on a cabin top and/or a cabin bottom, the structure is characterized in that the first anchoring flat steel and the second anchoring flat steel respectively comprise an inner layer and an outer layer, and the reinforcing structure comprises:
the first anchoring flat steel and the horizontal bulkhead reinforcing rib on the back of the first anchoring flat steel are crossed in projection, and the second anchoring flat steel and the horizontal bulkhead reinforcing rib on the back of the second anchoring flat steel are parallel to each other;
the cabin wall plate is provided with a first anchoring flat steel layer and a second anchoring flat steel layer, and the first anchoring flat steel layer and the second anchoring flat steel layer are symmetrically arranged on the two sides of the cabin wall plate;
one end of each first toggle plate is connected with an outer plate, and the other end of each first toggle plate is connected with the horizontal bulkhead reinforcing rib;
the inclined reinforcing ribs are arranged on the reverse side of the liquid tank surface of the tank wall plate in parallel, each inclined reinforcing rib is arranged between two adjacent first toggle plates in the ship width direction, the inclined reinforcing ribs are arranged between the outer plate and the reinforcing ribs on the upper portion of the tank wall in the ship height direction, and inclined ends of the inclined reinforcing ribs point to the outer plate.
2. The structure for reducing fatigue in bulkhead anchored steel strips of claim 1, wherein a plank is provided on the bulkhead plate at the lower portion, and the plank is extended from the outer plate to the first horizontal bulkhead stiffener at the lower portion in the height direction of the ship.
3. The LNG carrier fatigue reduction structure of the bulkhead anchor flat according to claim 2, wherein the construction method of the cut-and-thick plate comprises:
determining a region for inserting a thick plate on the bulkhead plate;
cutting off the original bulkhead plate of the determined area;
and welding the thick plug plate in the area.
4. The LNG ship bulkhead anchoring band fatigue reducing structure of claim 1, characterized in that the tank deck comprises a third anchoring band arranged obliquely, and the corresponding reinforcing structure comprises:
an inner plate disposed parallel to the outer plate;
and one end of the second toggle plate is connected with the outer plate, the other end of the second toggle plate is connected with the inner plate, and the main body of the second toggle plate is quadrilateral.
5. The LNG ship fatigue reducing structure of bulkhead anchoring flat steel according to claim 1, wherein the thickness of the bulkhead upper reinforcing ribs is greater than the thickness of the second anchoring flat steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011004744.2A CN112298450B (en) | 2020-09-22 | 2020-09-22 | Structure for reducing fatigue of bulkhead anchoring flat steel of LNG ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011004744.2A CN112298450B (en) | 2020-09-22 | 2020-09-22 | Structure for reducing fatigue of bulkhead anchoring flat steel of LNG ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112298450A CN112298450A (en) | 2021-02-02 |
| CN112298450B true CN112298450B (en) | 2022-12-13 |
Family
ID=74488426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011004744.2A Active CN112298450B (en) | 2020-09-22 | 2020-09-22 | Structure for reducing fatigue of bulkhead anchoring flat steel of LNG ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112298450B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682453B (en) * | 2021-09-07 | 2024-08-16 | 中国舰船研究设计中心 | Titanium alloy elastic beam type inter-board ballast water tank and diving system |
| CN113682420B (en) * | 2021-09-17 | 2022-08-16 | 上海外高桥造船有限公司 | Ship oil tank structure |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3896961A (en) * | 1972-04-05 | 1975-07-29 | Gaz Transport | Insulated storage tank for liquid or liquefied products |
| WO2012065616A1 (en) * | 2010-11-16 | 2012-05-24 | Nordic Yards Wismar Gmbh | Tank for transporting and/or storing cryogenic liquids |
| CN102489919A (en) * | 2011-11-29 | 2012-06-13 | 沪东中华造船(集团)有限公司 | Method for installing and adjusting trihedral wing plate of LNG (liquefied natural gas) carrier containment system |
| CN202686682U (en) * | 2012-06-21 | 2013-01-23 | 中国海洋石油总公司 | Transverse bulkhead structure for liquified natural gas carrier |
| CN104925216A (en) * | 2014-03-19 | 2015-09-23 | 江南造船(集团)有限责任公司 | Independent liquid tank transverse supporting structure |
| CN204688349U (en) * | 2014-08-18 | 2015-10-07 | 沪东中华造船(集团)有限公司 | The installation frame of high-mobility, multipurpose, wheeled vehicle corner insulated case |
| KR20170050588A (en) * | 2015-10-30 | 2017-05-11 | 대우조선해양 주식회사 | Insulation System For Membrane Type in LNG Storage Tank |
| CN207311764U (en) * | 2017-08-24 | 2018-05-04 | 台州枫叶船业有限公司 | A kind of ship double bottom bracket |
| CN110900494A (en) * | 2019-11-07 | 2020-03-24 | 沪东中华造船(集团)有限公司 | Auxiliary installation method for anchoring flat steel of ship containment system |
| CN210212712U (en) * | 2019-05-30 | 2020-03-31 | 沪东中华造船(集团)有限公司 | Horizontal bulkhead structure of LNG ship cargo hold |
| CN111417816A (en) * | 2017-10-20 | 2020-07-14 | 气体运输技术公司 | Sealed thermally insulated tank with several zones |
-
2020
- 2020-09-22 CN CN202011004744.2A patent/CN112298450B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3896961A (en) * | 1972-04-05 | 1975-07-29 | Gaz Transport | Insulated storage tank for liquid or liquefied products |
| WO2012065616A1 (en) * | 2010-11-16 | 2012-05-24 | Nordic Yards Wismar Gmbh | Tank for transporting and/or storing cryogenic liquids |
| CN102489919A (en) * | 2011-11-29 | 2012-06-13 | 沪东中华造船(集团)有限公司 | Method for installing and adjusting trihedral wing plate of LNG (liquefied natural gas) carrier containment system |
| CN202686682U (en) * | 2012-06-21 | 2013-01-23 | 中国海洋石油总公司 | Transverse bulkhead structure for liquified natural gas carrier |
| CN104925216A (en) * | 2014-03-19 | 2015-09-23 | 江南造船(集团)有限责任公司 | Independent liquid tank transverse supporting structure |
| CN204688349U (en) * | 2014-08-18 | 2015-10-07 | 沪东中华造船(集团)有限公司 | The installation frame of high-mobility, multipurpose, wheeled vehicle corner insulated case |
| KR20170050588A (en) * | 2015-10-30 | 2017-05-11 | 대우조선해양 주식회사 | Insulation System For Membrane Type in LNG Storage Tank |
| CN207311764U (en) * | 2017-08-24 | 2018-05-04 | 台州枫叶船业有限公司 | A kind of ship double bottom bracket |
| CN111417816A (en) * | 2017-10-20 | 2020-07-14 | 气体运输技术公司 | Sealed thermally insulated tank with several zones |
| CN210212712U (en) * | 2019-05-30 | 2020-03-31 | 沪东中华造船(集团)有限公司 | Horizontal bulkhead structure of LNG ship cargo hold |
| CN110900494A (en) * | 2019-11-07 | 2020-03-24 | 沪东中华造船(集团)有限公司 | Auxiliary installation method for anchoring flat steel of ship containment system |
Non-Patent Citations (1)
| Title |
|---|
| GTT NO.96货舱围护系统殷瓦三面体手工焊接工艺研究与质量控制;朱哲仁等;《中国水运(下半月)》;20160815;第16卷(第08期);第122-127页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112298450A (en) | 2021-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112298450B (en) | Structure for reducing fatigue of bulkhead anchoring flat steel of LNG ship | |
| CN113772010B (en) | Structural frame, design method thereof and ship | |
| CN210212713U (en) | Toe end node structure of transverse strong frame of ship T-shaped material | |
| CN111017145A (en) | Method for carrying transverse bulkhead of ultra-large container ship | |
| CN213262826U (en) | Side structure | |
| CN210761154U (en) | Crossbeam tip structure and boats and ships | |
| CN210000496U (en) | double-layer bottom longitudinal girder structure at bottom stool of transverse bulkhead of bulk cargo ship | |
| CN111017146A (en) | Auxiliary carrying structure for transverse bulkhead of ultra-large container ship | |
| CN212149243U (en) | Embedded strengthen lug | |
| CN113371126B (en) | Groove type bulkhead discharge plate structure | |
| CN115593558B (en) | Flat-plate transverse bulkhead structure for cargo tank on LNG ship | |
| CN211223762U (en) | Double-bottom bracket-free type cargo oil hose crane base of oil tanker | |
| CN113928482A (en) | Thin film type LNG ship cargo hold structure applied to inland river | |
| CN213705701U (en) | Toe end of longitudinal hatch coaming of bulk cargo ship | |
| CN114379703A (en) | Horizontal bulkhead structure of LNG ship hybrid cargo hold | |
| CN204775833U (en) | Big flare boats and ships based on bottom is attacked and is strengthened design | |
| CN213620140U (en) | Outer plate abrupt change bulwark structure | |
| CN113955019A (en) | Anti-rolling structure at top of rhombic liquid tank | |
| CN208233288U (en) | Cabin structure and cattle-ship | |
| CN112193360A (en) | Side structure | |
| CN214397106U (en) | Stern fairlead base | |
| CN217994714U (en) | Novel connection form of inner bottom plate and bottom side cabin inclined plate | |
| JP3071193B1 (en) | Chipboard outer plate structure | |
| CN221606003U (en) | Ship combined groove type bulkhead | |
| CN214729451U (en) | Anti-fatigue structure of key node of roll-on-roll-off ship |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |