CN114313097B - Structure type of steel marine ship strong deck lower side large opening area - Google Patents
Structure type of steel marine ship strong deck lower side large opening area Download PDFInfo
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- CN114313097B CN114313097B CN202210014941.5A CN202210014941A CN114313097B CN 114313097 B CN114313097 B CN 114313097B CN 202210014941 A CN202210014941 A CN 202210014941A CN 114313097 B CN114313097 B CN 114313097B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 61
- 239000010959 steel Substances 0.000 title claims abstract description 61
- 238000005452 bending Methods 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The invention relates to a structural style of a large-opening area on the lower side of a steel marine strong deck, which is used for a steel marine with a large opening on an outer plate on the lower side of the strong deck, and comprises a long longitudinal wall, wherein the long longitudinal wall comprises a longitudinal wall plate framework arranged at the rib position of the large-opening area, corrugated plates arranged on two sides of the longitudinal wall plate framework, an inner plate arranged at the end part of each corrugated plate, or a non-watertight supporting bulkhead; the longitudinal wall plate framework comprises longitudinal wall plates, and the longitudinal wall plates are watertight bulkheads or non-watertight bulkheads; the structure type further comprises a powerful deck framework and a side outer plate framework, wherein the powerful deck framework, the side outer plate framework and the longitudinal wall plate framework are longitudinal frameworks, and the frameworks are effectively connected to form a transverse strong framework. The structural style of the invention can not only improve the total longitudinal strength of the hull girder in the large opening area, but also control the weight of the long longitudinal wall and guide the structural design of the large opening area on the lower side of the steel marine strong deck.
Description
Technical Field
The invention relates to the technical field of hull structure design, in particular to a structural type of a large-opening area on the lower side of a steel marine vessel strong deck.
Background
Because of the general arrangement, the large openings of the steel sea vessel are needed on the outboard side outer plate below the strength deck, which can result in the outboard side outer plate reducing the shear force transferred to the strength deck, reducing the effectiveness of the strength deck and its longitudinal continuous members within the opening below. Particularly, if the large opening is positioned in the range of 0.4L in the ship, the area where the large opening is positioned needs to bear relatively large total longitudinal bending moment, and the structural safety of the ship is more challenging.
A long longitudinal wall is typically provided near the large opening to perform the room separation or main passage function, and is conventionally designed as an interior panel or non-watertight supporting bulkhead. The interior plate is not a hull structural member, and the non-watertight supporting bulkhead mainly plays a part in supporting, and both are not helpful for solving the problem of reduced effectiveness of the total longitudinal strength of related members caused by a large opening on the lower side of the strong deck.
Therefore, the conventional design pattern of the hull structure in the large opening area needs to be changed, and the long longitudinal wall is combined with the general arrangement characteristic that the long longitudinal wall is generally arranged near the large opening to realize the room separation or main channel function, so that the long longitudinal wall is effectively utilized, a novel structural pattern is provided, the total longitudinal strength of the hull beam in the large opening area can be improved, and the weight of the long longitudinal wall can be controlled.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a structural style of a large-opening area on the lower side of a steel marine strong deck, which aims at the defects in the prior art, and the structural style can not only improve the total longitudinal strength of a hull girder in the large-opening area, but also control the weight of the long longitudinal wall.
The technical scheme adopted by the invention for solving the technical problems is as follows:
A structural style of a steel marine vessel strong deck lower side large opening area for a steel marine vessel provided with a large opening on a strong deck lower side outer plate, the structural style comprising a long longitudinal wall; the long longitudinal wall comprises a longitudinal wall plate framework arranged at the rib position of the large opening area, corrugated plates arranged at two sides of the longitudinal wall plate framework, and an inner plate or a non-watertight supporting bulkhead arranged at the end part of each corrugated plate; the structure type further comprises a powerful deck framework and a side outer plate framework, wherein the powerful deck framework, the side outer plate framework and the longitudinal wall plate framework are longitudinal frameworks, and the frameworks are effectively connected to form a transverse strong framework.
In the scheme, the longitudinal wall plate framework comprises a longitudinal wall plate, and the longitudinal wall plate is a watertight bulkhead or a non-watertight bulkhead; the longitudinal wall plates and the corrugated plates are connected in a welding mode; the corrugated plate is riveted with the inner plate, and the corrugated plate is welded with the non-watertight supporting bulkhead.
In the above scheme, if the length of the large opening in the ship length direction is set to be L, the length of the longitudinal wall plate skeleton in the ship length direction is not smaller than L so as to cover the large opening area.
In the above scheme, the length of the large opening in the ship length direction is set to be L, the distance between the corrugated plate and the edge of the large opening is set to be L ', and the determining method of the L' is as follows: (1) Designing long longitudinal walls into longitudinal wall plate frameworks which are arranged along the ship length direction in a full ship finite element model; (2) Applying a total longitudinal bending moment M to a specific section at the large opening, and calculating to obtain the total longitudinal bending stress sigma i at the strong deck of the specific section through the finite element of the total longitudinal strength of the whole ship; (3) In a full-ship finite element model, designing a long longitudinal wall into a segmented form consisting of a longitudinal wall plate framework, corrugated plates, built-in plates or non-watertight supporting bulkheads, and enabling L 'to be respectively equal to 0-5L to obtain total longitudinal bending stress sigma j at a strong deck with a specific section corresponding to each L'; (4) When sigma i/σj is more than or equal to 99%, L' corresponding to sigma j is the required value.
In the scheme, the length range of the corrugated plate along the ship length direction is 3-5 rib distances.
In the scheme, the longitudinal wall plate framework further comprises longitudinal wall longitudinal ribs and longitudinal wall vertical stringers which are arranged on the longitudinal wall plates.
In the scheme, the strong deck framework comprises a strong deck, a deck longitudinal frame, a deck longitudinal truss and a deck strong beam, wherein the deck longitudinal frame, the deck longitudinal truss and the deck strong beam are arranged on the strong deck; the deck girder is effectively connected with the vertical girders of the longitudinal wall.
In the scheme, the strong deck skeleton is of a steel welding structure, the deck longitudinal skeleton is flat steel, flat-bulb steel or angle steel, and the deck longitudinal girders and the deck strong cross beams are T-shaped materials.
In the above scheme, the side outer plate skeleton comprises a side outer plate, an outer plate longitudinal rib and an outer plate reinforcing longitudinal girder, wherein the outer plate longitudinal rib and the outer plate reinforcing longitudinal girder are arranged on the side outer plate, the side outer plate is provided with a side large opening, and the outer plate reinforcing longitudinal girder is arranged above the side large opening so as to be effectively connected with the deck reinforcing transverse girder.
In the scheme, the side outer plate framework is of a steel welding structure, and the outer plate longitudinal framework is flat steel, flat-bulb steel or angle steel; the outer plate reinforcing stringers are eccentric T-shaped sections or flat steel, and the concrete type is determined according to the size and the allowable space of the large opening.
The invention has the beneficial effects that:
In order to improve the total longitudinal strength of the hull beam in the large-opening area of the lower side of the steel marine strong deck, longitudinal wall plate frameworks are arranged in the large-opening area, and are designed to be longitudinal frameworks, and the longitudinal wall plate frameworks, the strong deck frameworks and the side outer plate frameworks are effectively connected with each other to form a transverse strong framework. By optimally designing the dimensions of each framework member, the structural style can improve the overall longitudinal strength of the hull beam in a large opening area.
Meanwhile, in order to reduce the problem of weight increase caused by the longitudinal skeleton type long longitudinal wall, a corrugated plate is arranged at a proper position of the long longitudinal wall, so that the long longitudinal wall does not participate in the total longitudinal strength in the corrugated plate and the area outside the corrugated plate, and the long longitudinal wall is designed into an inner plate or a non-watertight supporting bulkhead according to actual needs. Thus, the structural form can not only improve the total longitudinal strength of the hull girder in the large opening area, but also control the weight of the long longitudinal wall.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a cross-sectional layout view of a structural style of the outboard large opening area under the strength deck of the steel marine vessel of the present invention;
FIG. 2 is a typical cross-sectional view of a structural style of the outboard large opening area of the strength deck of the steel marine vessel of the present invention;
fig. 3 is a plan view of a side outer plate and a long longitudinal wall of the steel marine vessel strength deck of the present invention in the form of a large open area of the underside.
In the figure: 10. a strong deck skeleton; 11. a strong deck; 12. deck longitudinal bones; 13. deck stringers; 14. a deck girder;
20. A side outer panel skeleton; 21. a side outer plate; 22. an outer plate longitudinal bone; 23. outer panel reinforcing stringers; 24. a large opening;
30. A longitudinal wall plate skeleton; 31. a longitudinal wall plate; 32. longitudinal wall longitudinal bone; 33. vertical girders of the longitudinal wall vertically;
41. a first lower deck; 42. a second lower deck;
50. A long longitudinal wall;
60. corrugated plates;
70. inside deck or non-watertight supporting bulkheads.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1, the invention provides a structural style of a large opening area on the lower side of a strong deck of a steel sea vessel, which is used for the steel sea vessel with a large opening on an outer plate on the lower side of the strong deck. The structural style includes a strength deck frame 10, a side outer panel frame 20, and a long longitudinal wall 50. As shown in fig. 3, the long vertical wall 50 includes a vertical wall frame 30 provided at a rib position of a large opening area, corrugated plates 60 provided at both sides of the vertical wall frame 30, and an interior plate or non-watertight supporting bulkhead 70 provided at a side of the corrugated plates 60. As shown in fig. 2, the strong deck skeletons 10, the outboard plate skeletons 20, and the longitudinal wall plate skeletons 30 are all longitudinal skeletons, and the skeletons are effectively connected to form a transverse strong frame.
Further preferably, the longitudinal wall plate skeleton 30 comprises a longitudinal wall plate 31, a longitudinal wall longitudinal rib 32 and a longitudinal wall vertical truss 33 which are arranged on the longitudinal wall plate 31, and is of a steel welding structure. The longitudinal wall plate 31 is a watertight bulkhead or a non-watertight bulkhead, the longitudinal wall longitudinal rib 32 is flat steel, flat bulb steel or angle steel, and the vertical longitudinal girder 33 is a T-shaped material.
Further optimizing, the connection mode of the longitudinal wall plate 31 and the corrugated plate 60 is welding; the corrugated plate 60 and the inner plate are connected in a riveting way; corrugated plate 60 is welded to non-watertight support bulkhead 70.
Further preferably, the length of the large opening in the ship length direction is set to L, and then the length of the longitudinal wall plate skeleton 30 in the ship length direction is not smaller than L so as to cover the large opening area.
Further, the length of the large opening in the ship length direction is set to be L, the distance between the corrugated plate 60 and the edge of the large opening is set to be L ', and the determining method of the L' is as follows: (1) Designing long longitudinal walls into longitudinal wall plate frameworks which are arranged along the ship length direction in a full ship finite element model; (2) Applying a total longitudinal bending moment M to a specific section at the large opening, and calculating to obtain the total longitudinal bending stress sigma i at the strong deck of the specific section through the finite element of the total longitudinal strength of the whole ship; (3) In a full-ship finite element model, designing a long longitudinal wall into a segmented form consisting of a longitudinal wall plate framework, corrugated plates, built-in plates or non-watertight supporting bulkheads, and enabling L 'to be respectively equal to 0-5L (the spacing can be 0.5L) to obtain total longitudinal bending stress sigma j at a strong deck with a specific section corresponding to each L'; (4) When sigma i/σj is more than or equal to 99%, L' corresponding to sigma j is the required value.
Further optimizing, the length range of the corrugated plate 60 along the ship length direction takes 3-5 rib distances, and the long longitudinal wall 50 in the range of the corrugated plate 60 is designed into a longitudinal skeleton; the long longitudinal wall 50 is designed as an interior panel or non-watertight support bulkhead 70 in the area outside of the corrugated panel 60.
Further preferably, the strength deck skeleton 10 comprises a strength deck 11, and a deck longitudinal 12, a deck longitudinal girder 13 and a deck strength beam 14 which are arranged on the strength deck 11, and are of steel welding structures. The deck longitudinal 12 is flat steel, flat-bulb steel or angle steel, and the deck longitudinal 13 and the deck girder 14 are T-shaped materials. Deck strength beams 14 are operatively connected to vertical stringers 33.
Further preferably, the side outer plate skeleton 20 includes a side outer plate 21, and an outer plate longitudinal rib 22 and an outer plate reinforcing longitudinal girder 23 mounted on the side outer plate 21, and is of a steel welded structure, and a side large opening 24 is formed in the side outer plate 21. The outer plate longitudinal ribs 22 are flat steel, flat bulb steel or angle steel. The outer panel reinforcement stringers 23 are generally provided above the side large opening 24 for operative connection with the deck girder 14, which may be an eccentric T-section or flat steel, in a particular pattern depending on the size and allowable space of the large opening 24.
The design process of the structural form of the invention will be specifically described below by taking a steel sea vessel as an example. The steel sea vessel is provided with a large opening on the lower side outer plate of the strength deck, which spans the two lower decks (the first lower deck 41 and the second lower deck 42) below the strength deck, and a long longitudinal wall 50 is provided near the large opening to realize a room separation or main passage function, according to the total arrangement requirements. In order to improve the total longitudinal strength of the hull girder of the large opening area, the invention provides a structural type of the large opening area on the side of the steel marine strong deck, which designs the long longitudinal wall 50 into a longitudinal skeleton, and simultaneously meets the requirement of the total longitudinal strength on the long longitudinal wall 50, and can effectively improve the section modulus of the strong deck at the large opening, thereby improving the total longitudinal strength of the hull girder of the large opening area. To illustrate the effectiveness of this form of construction, the section moduli of the three types of lower strength deck are compared below in connection with the steel marine vessel. The model 1 is designed as an inner plate, and is not a bearing structure, and the corresponding longitudinal wall of the strong deck is a deck longitudinal bone; the model 2 is designed into a non-watertight supporting bulkhead, the longitudinal wall is a transverse skeleton type, the plate thickness is 6mm, and the stiffening material is No. 10 flat-bulb steel; form 3 is designed into a longitudinal skeleton, see fig. 2, and the longitudinal skeleton is designed in consideration of the total longitudinal strength, and the longitudinal wall plate 31 is 8mm thick, the longitudinal skeleton 32 is 12-gauge flat-bulb steel, and the longitudinal wall longitudinal skeleton is
And establishing a full-ship finite element model according to the requirement of the full-ship total longitudinal strength finite element calculation. A certain total longitudinal bending moment M is applied to a certain specific section at the large opening, so as to obtain the total longitudinal bending stress sigma i (see table 1 below) at the specific section strength deck in turn of 3 types. Assuming that the section modulus at the strength deck corresponding to σ i is W i, m=σ i×Wi.
TABLE 1 Total longitudinal bending stress (MPa) of Strength Deck under different types
| Structural design | Form 1 | Form 2 | Form 3 |
| σi | 22.19 | 21.95 | 20.42 |
Since σ 1×W1＝σ3×W3, W 3/W1＝σ1/σ3 =22.19/20.42=1.087, and thus the section modulus at the strength deck in pattern 3 is 8.7% greater than in pattern 1, designing the long longitudinal wall 50 as a longitudinal skeleton can improve the overall longitudinal strength of the hull girder in a large opening area.
The long longitudinal wall 50 is typically provided for room splitting or main passage and extends long in the fore-aft direction of the side large opening, even throughout the whole vessel. The longitudinal skeleton type long longitudinal wall 50 can effectively improve the overall longitudinal strength of the hull girder in a large opening area, but at the same time, the weight of the long longitudinal wall 50 is increased. In order to solve the problem of weight increase, corrugated plates 60 are provided at appropriate positions of the long longitudinal walls 50, and the range thereof can be 3 to 5 rib pitches, see fig. 3, so that the long longitudinal walls 50 do not participate in the total longitudinal strength in the corrugated plates 60 and the areas outside thereof, and the long longitudinal walls 50 are designed into inner plates or non-watertight supporting bulkheads 70 in the areas outside the corrugated plates 60 according to actual needs.
The length of the large opening in the ship's length direction is set to L, and the distance of the corrugated plate 60 from the edge of the large opening is set to L'. See fig. 3. Let L' equal 0, 0.5L, L, 1.5L, 2L, respectively, in the finite element model, the total longitudinal bending stress σ j at the specific profile strength deck was obtained as described below in Table 2.
TABLE 2 Total longitudinal bending stress (MPa) of Strength Deck at different distances L
| L' | L'＝0 | L'＝0.5L | L'＝L | L'＝1.5L | L'＝2L |
| σj | 22.0 | 21.83 | 21.2 | 20.43 | 20.425 |
As can be seen from table 2, the total longitudinal bending stress at the specific profile strength deck is already very close to 20.42MPa when L' =1.5l. Corrugated plate 60 may be positioned 1.5L from the edge of the large opening, with long longitudinal walls 50 in the area of corrugated plate 60 being designed as longitudinal frames, with the remaining long longitudinal walls 50 being designed as desired. In this way, the overall longitudinal strength of the hull girder in the large opening area can be improved, and the weight of the long longitudinal wall 50 can be controlled.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (7)
1. A structural style of a steel marine vessel strong deck lower side large opening area for a steel marine vessel provided with a large opening on a strong deck lower side outer plate, the structural style comprising a long longitudinal wall; the long longitudinal wall is characterized by comprising a longitudinal wall plate framework arranged at a rib position of a large opening area, corrugated plates arranged at two sides of the longitudinal wall plate framework, and an inner plate or a non-watertight supporting bulkhead arranged at the end part of each corrugated plate; setting the length of the large opening in the ship length direction as L, wherein the length of the longitudinal wall plate framework along the ship length direction is not less than L so as to cover the large opening area; the distance between the corrugated plate and the edge of the large opening is L ', and the determining method of the L' is as follows: (1) Designing long longitudinal walls into longitudinal wall plate frameworks which are arranged along the ship length direction in a full ship finite element model; (2) Applying a total longitudinal bending moment M to a specific section at the large opening, and calculating to obtain the total longitudinal bending stress sigma i at the strong deck of the specific section through the finite element of the total longitudinal strength of the whole ship; (3) In a full-ship finite element model, designing a long longitudinal wall into a segmented form consisting of a longitudinal wall plate framework, corrugated plates, built-in plates or non-watertight supporting bulkheads, and enabling L 'to be respectively equal to 0-5L to obtain total longitudinal bending stress sigma j at a strong deck with a specific section corresponding to each L'; (4) When sigma i/σj is more than or equal to 99 percent, L' corresponding to sigma j is the required value; the length range of the corrugated plate along the ship length direction is 3-5 rib distances; the structure type further comprises a powerful deck framework and a side outer plate framework, wherein the powerful deck framework, the side outer plate framework and the longitudinal wall plate framework are longitudinal frameworks, and the frameworks are effectively connected to form a transverse strong framework.
2. The structural style of a steel marine vessel strength deck undersea large opening area of claim 1, wherein the longitudinal wall panel framework comprises longitudinal wall panels that are watertight bulkheads or non-watertight bulkheads; the longitudinal wall plates and the corrugated plates are connected in a welding mode; the corrugated plate is riveted with the inner plate, and the corrugated plate is welded with the non-watertight supporting bulkhead.
3. The structural style of a steel marine vessel strength deck undersea large opening area of claim 2, wherein the longitudinal wall panel framework further comprises longitudinal wall longitudinal ribs and longitudinal wall vertical stringers mounted to the longitudinal wall panels.
4. A structural style of a steel marine vessel strength deck undersea large opening area according to claim 3, wherein the strength deck skeleton comprises a strength deck and deck stringers, deck stringers and deck strength beams mounted on the strength deck; the deck girder is effectively connected with the vertical girders of the longitudinal wall.
5. The structural style of a large open area on the underside of a steel marine vessel's strength deck as claimed in claim 4, wherein the strength deck frame is a steel welded structure, the deck longitudinal is flat steel, flat bulb steel or angle steel, and the deck longitudinal and deck girder are T-section.
6. The structural style of a large outboard opening area under a steel marine vessel strength deck as set forth in claim 4 wherein said outboard outer panel skeleton comprises an outboard outer panel with an outboard large opening provided thereon, and an outboard longitudinal rib and an outboard reinforcing longitudinal girder mounted on said outboard outer panel for operative connection with said deck girder.
7. The structural style of a large open area on the underside of a steel marine power deck as claimed in claim 6, wherein said side outer plate skeleton is a steel welded structure and said outer plate longitudinal skeleton is flat steel, flat-bulb steel or angle steel; the outer plate reinforcing stringers are eccentric T-shaped sections or flat steel, and the concrete type is determined according to the size and the allowable space of the large opening.
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| JPH05221379A (en) * | 1992-02-10 | 1993-08-31 | Mitsubishi Heavy Ind Ltd | Cargo oil outflow preventing tanker |
| JPH10129574A (en) * | 1996-10-31 | 1998-05-19 | Mitsubishi Heavy Ind Ltd | Hull structure |
| JP3325790B2 (en) * | 1996-12-13 | 2002-09-17 | ヤマハ発動機株式会社 | Hull reinforcement structure for boats |
| FR2780941B1 (en) * | 1998-07-10 | 2000-09-08 | Gaz Transport & Technigaz | WATERPROOF AND THERMALLY INSULATING TANK WITH IMPROVED INSULATING BARRIER, INTEGRATED INTO A VESSEL CARRIER STRUCTURE |
| CN202935535U (en) * | 2012-12-03 | 2013-05-15 | 中国船舶工业集团公司第七〇八研究所 | Strengthening structure of drilling ship deck |
| CN205256580U (en) * | 2015-11-09 | 2016-05-25 | 中国舰船研究设计中心 | Be able to bear or endure to hit single shell boats and ships topside structure |
| JP2018030467A (en) * | 2016-08-25 | 2018-03-01 | 三井造船株式会社 | Bulk loading ship |
| CN207580083U (en) * | 2017-08-14 | 2018-07-06 | 中国船舶工业集团公司第七0八研究所 | A kind of corrugated bulkhead support construction |
| CN111874154A (en) * | 2020-06-28 | 2020-11-03 | 中国舰船研究设计中心 | Cross connecting structure between composite bulkhead and deck for ship |
| CN213262826U (en) * | 2020-10-29 | 2021-05-25 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Side structure |
| CN112356972A (en) * | 2020-11-19 | 2021-02-12 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Liquefied natural gas transport ship and liquefied natural gas transport system |
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