Double hull side structure for large and medium-sized container ships

Abstract

The application discloses a double-hull side structure of a large and medium-sized container ship, which is arranged between a hull plate and an inner shell of the container ship, a passage platform is arranged below a main deck, a bilge platform is arranged above a bilge, no other platform is arranged between the passage platform and the bilge platform, two ends of the passage platform are fixedly connected to the hull plate and the inner shell respectively, one end of the bilge platform is fixedly connected to the hull plate, and the middle part of the bilge platform is fixedly connected to the inner shell. The application can save steel material, reduce weight, lower manufacturing cost, reduce construction process and reduce the number of components.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to a double-hull side structure for large and medium-sized container ships. Background Technology

[0002] For medium to large container ships, including Panamax and ultra-large container ships, the hull will deform when subjected to the forces of seawater and waves. To strengthen the hull structure and control deformation, several platforms are generally installed. On the double-hull side of a container ship, one platform is installed below the main deck passage, another platform is installed near the bilge, and one or two more platforms are installed between these two platforms, for a total of three to four platforms.

[0003] The disadvantages of existing technologies include: excessive structural strength redundancy, waste of materials, and increased structural weight and construction process. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a double-hull side structure for large and medium-sized container ships.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A double-hull side structure for a medium-to-large container ship is provided between the outer hull and the inner hull of the container ship. A passageway platform is provided below the main deck, and a bilge platform is provided above the bilge. No other platform is provided between the passageway platform and the bilge platform. The two ends of the passageway platform are fixed to the outer hull and the inner hull, respectively. One end of the bilge platform is fixed to the outer hull, and the middle part of the bilge platform is fixed to the inner hull.

[0007] There are several longitudinal ribs between the passageway platform and the bilge platform, which are fixed to the outer hull and inner hull respectively.

[0008] The passageway platform is a watertight platform.

[0009] The access platform is parallel to the main deck.

[0010] The bilge platform is parallel to the channel platform.

[0011] The other end of the bilge platform extends toward the hull cavity.

[0012] The distance from the passageway platform to the main deck is less than the distance from the passageway platform to the bilge platform.

[0013] The container ship is capable of carrying more than 4,000 TEUs.

[0014] The connection between the passageway platform and the outer hull plate, and between the passageway platform and the inner hull, are all welded.

[0015] The bilge platform is connected to the outer hull plating, and the bilge platform is connected to the inner hull by welding.

[0016] The beneficial effects of this invention are as follows: In the double-hull side area between the outer hull plating and the inner hull, only a passageway platform and a bilge platform are provided below the main deck; no other platforms are provided between the passageway platform and the bilge platform. This structure fully meets the structural strength and deformation requirements stipulated in ship codes and is safe. This invention can save steel, reduce weight, and lower manufacturing costs; it can also reduce construction processes and the number of components. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention. Detailed Implementation

[0018] The present invention will be described more clearly and completely below with reference to a preferred embodiment and the accompanying drawings.

[0019] like Figure 1 As shown, a double-hull side structure for a medium-sized container ship is provided between the outer hull 10 and the inner hull 20 of the container ship. A passage platform 31 is provided below the main deck 30, and a bilge platform 32 is provided above the bilge 40.

[0020] The container ships mentioned are medium to large container ships, meaning they can carry more than 4,000 TEUs.

[0021] No other platforms are provided between the passageway platform 31 and the bilge platform 32. Several longitudinal ribs 33 are provided between the passageway platform 31 and the bilge platform 32, and the longitudinal ribs 33 are respectively fixed to the outer hull plate 10 and the inner hull 20.

[0022] The distance from the passage platform 31 to the main deck 30 is less than the distance from the passage platform 31 to the bilge platform 32.

[0023] The two ends of the channel platform 21 are fixed to the outer hull plate 10 and the inner hull 20, respectively.

[0024] One end of the bilge platform 32 is fixed to the outer hull plate 10, and the middle part of the bilge platform 32 is fixed to the inner hull 20; the other end of the bilge platform extends toward the inner cavity of the hull.

[0025] The passageway platform is a watertight platform.

[0026] The passageway platform 31 is parallel to the main deck 30; the bilge platform 32 is parallel to the passageway platform 31.

[0027] The connection between the passage platform 31 and the outer plate 10 of the ship and the connection between the passage platform 31 and the inner shell 20 are both welded.

[0028] The bilge platform 32 is connected to the outer hull plate 10 by welding, and the bilge platform 32 is connected to the inner hull 20 by welding.

[0029] Using the American Bureau of Shipping (ABS) finite element software named Eagle ContainerShip, structural strength and deformation analysis were performed on the double-hull side of a 7100 TEU container ship, which adopts the double-hull side structure of this invention.

[0030] First, the lateral deformation trend of the double-hull side structure was analyzed and calculated using the finite element analysis software. The calculation results showed that the lateral deformation trend of the double-hull side structure of the present invention is the same as that of existing double-hull side structures with several other platforms set between the passage platform and the bilge platform.

[0031] Secondly, the inward deformation value in the Y direction at the hatch coaming location was analyzed and calculated using the finite element analysis software. The calculation results showed that the inward deformation value in the Y direction at the hatch coaming of the present invention was 7.45 cm; while the inward deformation value in the Y direction at the hatch coaming of existing systems with several other platforms was 7.35 cm. It can be seen that the inward deformation values ​​in the Y direction at the hatch coaming of both systems are almost identical.

[0032] Third, the finite element analysis software analysis and calculation show that the double-hull side structure of the present invention fully meets the structural strength requirements.

[0033] It is evident that the double-hull side structure of the present invention fully meets the requirements for structural strength and deformation.

[0034] The double-hull side structure solution of this invention is designed for medium-to-large container ships, including ultra-large container ships, and larger than Panamax container ships. Medium-to-large container ships are defined as container ships carrying 4,000 or more containers.

[0035] In this invention, only a passageway platform and a bilge platform are provided below the main deck in the double-hull side area between the outer hull plating and the inner hull; no other platforms are provided between the passageway platform and the bilge platform. This structure fully meets the structural strength and deformation requirements stipulated in ship specifications and is safe.

[0036] This invention can save steel, reduce weight, and lower manufacturing costs.

[0037] This invention can also reduce construction processes and the number of components.

[0038] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A double hull side structure of a large and medium-sized container ship, which is provided between a ship body outer plate and an inner hull of the container ship, characterized by, A passageway platform is located below the main deck, and a bilge platform is located above the bilge. No other platforms are located between the passageway platform and the bilge platform. The two ends of the passageway platform are fixed to the outer hull and the inner hull, respectively. One end of the bilge platform is fixed to the outer hull, and the middle of the bilge platform is fixed to the inner hull. The distance from the passageway platform to the main deck is less than the distance from the passageway platform to the bilge platform. Several longitudinal ribs are located between the passageway platform and the bilge platform, and the longitudinal ribs are fixed to the outer hull and the inner hull, respectively. The passageway platform is a watertight platform. The container ship can carry more than 4,000 TEUs.

2. A double skin side structure of a large and medium-sized container ship according to claim 1, wherein The access platform is parallel to the main deck.

3. The double-hull side structure of a large and medium-sized container ship as described in claim 1, characterized in that, The bilge platform is parallel to the channel platform.

4. The double-hull side structure of a large and medium-sized container ship as described in claim 1, characterized in that, The other end of the bilge platform extends toward the hull cavity.

5. The double-hull side structure of a large and medium-sized container ship as described in claim 1, characterized in that, The connection between the passageway platform and the outer hull plate, and between the passageway platform and the inner hull, are all welded.

6. The double-hull side structure of a large and medium-sized container ship as described in claim 1, characterized in that, The bilge platform is connected to the outer hull plating, and the bilge platform is connected to the inner hull by welding.

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