A ship double bottom structure

Abstract

The application provides a ship double-bottom structure, wherein a plurality of mounting portions are arranged in the width range of each container area, the mounting portions corresponding to the container area on both sides of the container area width on the inner bottom plate are box corner mounting portions; the pipe string longitudinal girder is arranged at the box corner mounting portion close to the ship centerline; the distance between two adjacent strengthening longitudinal girders in the ship width direction is 1-2 times the container area width; and the longitudinal bone corresponding to the box corner mounting portion is a box corner strengthening longitudinal bone. The ship double-bottom structure limits the mounting position and arrangement mode of the truss and the longitudinal bone, so that the same size ship can be built by using a smaller number of structural components under the premise of ensuring the structural strength, thereby improving the building efficiency and reducing the building cost.

Description

Technical Field

[0001] This invention relates to the field of ship double bottom arrangement technology, and more particularly to a ship double bottom structure. Background Technology

[0002] Multipurpose vessels are capable of transporting bulk cargo, steel coils, packaged goods, and containers. The double bottom structure of multipurpose vessels needs to withstand the combined effects of seawater loads and cargo loads. Because cargo loading conditions are relatively flexible, their structural layout usually needs to meet the strength requirements of heavy bulk cargo conditions, container conditions, and steel coil conditions.

[0003] One arrangement of the double bottom in the prior art is as follows: Figure 1 As shown, from the midship to the inner hull area, the double bottom contains structures such as a tunnel area, longitudinal girder, inner bottom longitudinal rib, outer bottom longitudinal rib, and container corner reinforcement. The inner bottom longitudinal rib and outer bottom longitudinal rib are generally in the form of bulb flat steel. The width of the tunnel area is generally the same as that of a standard container. The inner bottom longitudinal rib, outer bottom longitudinal rib, and longitudinal girder are evenly distributed from the tunnel area towards the inner hull area. The positions of the longitudinal girder and longitudinal rib are not coordinated with the positions of the container corners on the inner bottom plate. In actual construction, the container corners need to be reinforced between the two longitudinal ribs to ensure strength, which makes construction operations inconvenient and increases the number and weight of structural components, which is not conducive to design and construction.

[0004] Another layout option is as follows Figure 2 As shown, the longitudinal girders are arranged entirely according to the corner positions of the container. The large number of longitudinal girders increases the number and weight of structural components, and the construction and building costs also increase accordingly.

[0005] Therefore, in order to solve the above problems, this invention proposes a double-bottom structure for ships that has fewer structural components and is lighter in weight while meeting structural strength requirements. Summary of the Invention

[0006] To address the technical problems existing in the current double-bottom structure of ships, the present invention provides a double-bottom structure for ships.

[0007] According to one objective of the present invention, the present invention provides a double bottom structure for a ship, wherein an inner bottom plate and an outer bottom plate are provided on the hull at intervals from top to bottom, and a bottom compartment is formed between the inner bottom plate and the outer bottom plate; an inner shell is provided on the outer side of the hull in the width direction; and an array of container areas of standard container width are provided in the cargo hold above the inner bottom plate.

[0008] On the opposite side of the inner bottom plate and the outer bottom plate, there are mounting parts arranged at equal intervals along the width direction of the hull. Each container area has a number of mounting parts within its width range. On the inner bottom plate, the mounting parts corresponding to both sides of the width of the container area are corner mounting parts. The corner mounting parts are aligned with the center position of the line connecting two adjacent corners of the container areas in the width direction of the hull.

[0009] The bottom compartment is provided with tubular longitudinal girder and reinforcing longitudinal girder arranged sequentially from the centerline of the hull to the line connecting the inner shell;

[0010] The tube girder is located at the corner mounting part of the container near the centerline of the hull. The tube girder, the inner bottom plate and the outer bottom plate enclose a tube area symmetrically arranged about the centerline of the hull. The tube area covers an integer number of container areas in the width direction of the hull.

[0011] The mounting portion of the reinforcing longitudinal girder, which is located between the tube area and the inner shell, has a distance between two adjacent reinforcing longitudinal girder in the hull width direction that is 1-2 times the width of the container area;

[0012] In addition to the installation of the longitudinal girder and the reinforcing longitudinal girder, the mounting part is equipped with longitudinal ribs, wherein the longitudinal rib corresponding to the box corner mounting part is a box corner reinforcing longitudinal rib.

[0013] Preferably, there is one tunnel area, the width of the tunnel area is close to the width of a standard shipping container, and the centerline of the tunnel area coincides with the centerline of the ship's hull.

[0014] Preferably, there are two tunnel zones, the width of each tunnel zone is approximately the width of two standard shipping containers, and the tunnel longitudinal girder shared by the two tunnel zones is set corresponding to the centerline of the hull.

[0015] Preferably, in the width direction of the hull, between the tubed area and the inner shell, 3-4 longitudinal ribs are provided within the width range of each standard container.

[0016] Preferably, the cross-section of the box corner reinforcing longitudinal rib is T-shaped.

[0017] Preferably, the corner reinforcing longitudinal rib includes a longitudinal section and a transverse section. One end of the longitudinal section is connected to the inner bottom plate or the opposite side of the outer bottom plate, and the other end of the longitudinal section extends vertically toward the bottom compartment and is connected to the transversely arranged transverse section.

[0018] Preferably, the longitudinal ribs, except for the box corner reinforcing longitudinal rib, are made of bulb flat steel, T-shaped steel, or angle steel.

[0019] Preferably, in the width direction of the hull, 4-5 longitudinal girders are provided between adjacent reinforcing longitudinal girders.

[0020] Preferably, the mounting portion on the side of the inner bottom plate opposite to the side of the outer bottom plate corresponds one-to-one with the mounting portion on the side of the outer bottom plate opposite to the side of the inner bottom plate.

[0021] Preferably, each of the reinforcing longitudinal girder extends fully within the lower compartment.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] The vessel's double-bottom structure, by limiting the installation position and arrangement of trusses and longitudinals, allows for the construction of vessels of the same size using fewer structural components while ensuring structural strength.

[0024] In this system, longitudinal girders corresponding to the corners of the containers are installed in the tunnel area, and reinforced longitudinal girders with a large gap are installed between the tunnel area and the inner shell. The reinforced longitudinal girders, together with the corner reinforced longitudinal ribs at the corresponding corner positions of the containers, support the double bottom, reduce the number of longitudinal girders in the bottom hold and the corner reinforcement structure, while meeting the structural strength requirements, thereby improving construction efficiency and reducing construction costs.

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a double-bottom arrangement in the prior art;

[0027] Figure 2 This is a schematic diagram of another double-bottom arrangement in the prior art;

[0028] Figure 3 This is a schematic diagram of one embodiment of the double bottom structure of a ship according to the present invention;

[0029] Figure 4 This is a schematic diagram of another embodiment of the double bottom structure of a ship described in this invention;

[0030] Figure 5 This is a schematic diagram of the arrangement of longitudinal ribs in a double-bottom structure of a ship according to the present invention. Detailed Implementation

[0031] The following description is intended to provide a detailed account of the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0032] Please see Figure 3-5 The present invention provides a technical solution: a double bottom structure for a ship, wherein an inner bottom plate 100 and an outer bottom plate 200 are arranged at intervals from top to bottom on the hull, a bottom compartment a is formed between the inner bottom plate 100 and the outer bottom plate 200, an inner shell 600 is provided on the outer side of the hull in the width direction, and an array of container areas b1 are provided in the cargo compartment b above the inner bottom plate 100, each of the container areas b1 adopting the width of a standard container;

[0033] On the opposite side surfaces of the inner bottom plate 100 and the outer bottom plate 200, there are mounting portions 300 arranged at equal intervals along the width direction of the hull. Each container area b1 has a plurality of mounting portions 300 within its width range. On the inner bottom plate 100, the mounting portions 300 corresponding to both sides of the width of any container area b1 are corner mounting portions 301. The corner mounting portions 301 are aligned with the center position of the line connecting the corners of two adjacent container areas b1 in the width direction of the hull.

[0034] A plurality of longitudinal girder 400s are provided between the inner bottom plate 100 and the outer bottom plate 200, close to the centerline x of the hull. The longitudinal girder 400, the inner bottom plate 100 and the outer bottom plate 200 enclose a symmetrically arranged duct area 401 about the centerline x of the hull. The duct area 401 covers at least an integer number of container areas b1 in the width direction of the hull. The longitudinal girder 400 is provided at the corner mounting part 301, that is, the longitudinal girder of the duct area 401 is directly opposite the center position of the corner of the container area b1.

[0035] Between the inner bottom plate 100 and the outer bottom plate 200, a plurality of reinforcing longitudinal girders 500 are provided between the tunnel area 401 and the inner shell 600. That is, the bottom compartment a is provided with tunnel longitudinal girders 400 and reinforcing longitudinal girders 500 arranged sequentially in the direction of the line connecting the hull centerline x to the inner shell 600. The reinforcing longitudinal girders 500 are provided in the mounting part 300 between the tunnel area 401 and the inner shell 600. The distance between two adjacent reinforcing longitudinal girders 500 in the hull width direction is 1-2 times the width of the container area b1.

[0036] In addition to the installation of the longitudinal girder 400 and the reinforcing longitudinal girder 500, the mounting part 300 is equipped with a longitudinal rib 700, wherein the longitudinal rib 700 corresponding to the box corner mounting part 301 is a box corner reinforcing longitudinal rib 701, and the structural strength of the box corner reinforcing longitudinal rib 701 is greater than that of the other longitudinal ribs 700.

[0037] Furthermore, each of the reinforcing longitudinal girder 500 extends fully within the lower compartment a.

[0038] Compared to the existing double-bottom arrangement scheme that does not consider the reinforcement of the container, in actual construction, the corners of the container need to be reinforced with a reinforcing structure between the two longitudinal girders at 700mm, which makes construction operations inconvenient and increases the number and weight of structural components, which is not conducive to design and construction. Although the longitudinal girders are arranged entirely according to the container, the structural strength is high, but the number of longitudinal girders is large, which increases the number and weight of structural components, and the construction and building costs also increase accordingly.

[0039] By defining the installation positions and arrangement of the trusses and longitudinals 700, this double-bottom structure allows for the construction of ships of the same size using fewer structural components while ensuring structural strength.

[0040] In this system, longitudinal girders 400 corresponding to the corners of containers are installed in the tunnel area 401, and reinforcing longitudinal girders 500 with a large interval are installed between the tunnel area 401 and the inner shell 600. The reinforcing longitudinal girders 500, together with the corner reinforcing longitudinal girders 701 corresponding to the corners of containers, provide support for the double bottom, reduce the number of longitudinal girders in the bottom compartment a and the corner reinforcement structure, and at the same time meet the structural strength requirements, thereby improving construction efficiency and reducing construction costs.

[0041] Depending on the ship's beam and piping system layout requirements, the number of the pipe tunnel areas 401 is one or two;

[0042] In one embodiment, see Figure 3 The number of the tunnel area 401 is 1, the width of the tunnel area 401 is close to the width of a standard container, and the centerline of the tunnel area 401 coincides with the centerline x of the hull;

[0043] In another embodiment, see Figure 4 There are two tunnel areas 401, and the width of each tunnel area 401 is approximately the width of two standard shipping containers. The tunnel longitudinal girder 400 shared by the two tunnel areas 401 is set along the centerline x of the hull.

[0044] In this embodiment, in the width direction of the hull, between the tube region 401 and the inner shell 600, 3-4 longitudinal ribs 700 are provided within the width range of each standard container;

[0045] In the width direction of the hull, the distance between adjacent mounting parts 300 is the mounting distance of the longitudinal ribs 700, and the distance between adjacent reinforcing longitudinal girders 500 is 4 to 5 times the mounting distance of the longitudinal ribs 700. That is, in the width direction of the hull, there are 4 to 5 longitudinal ribs 701 between adjacent reinforcing longitudinal girders 500, and reinforcing longitudinal girders 500 are provided at intervals of 4 to 5 longitudinal ribs 700.

[0046] By limiting the number of longitudinal girders 700 within the width of each standard container, and the spacing between reinforcing longitudinal girders 500, the longitudinal girders 700 and reinforcing longitudinal girders 500 can reduce the number of components while ensuring sufficient overall structural strength during use.

[0047] Furthermore, the mounting portions 300 on the side of the inner bottom plate 100 opposite to the side of the outer bottom plate 200 correspond one-to-one with the mounting portions 300 on the side of the outer bottom plate 200 opposite to the side of the inner bottom plate 100. During assembly, refer to... Figure 3-5 The outer bottom plate 200 is also provided with a longitudinal rib 700 on the mounting part 300 on the side opposite to the inner bottom plate 100. The inner bottom plate 100, the outer bottom plate 200 and the longitudinal rib 700 on the longitudinal rib together form a stable support structure.

[0048] For the specific structure of the longitudinal bone 700, please refer to [link to relevant documentation]. Figure 3-5 The cross-section of the box corner reinforcing longitudinal rib 701 is T-shaped. For details, see [link to relevant documentation]. Figure 3 and 4 The box corner reinforcing longitudinal rib 701 includes a longitudinal part 7011 and a transverse part 7012. One end of the longitudinal part 7011 is connected to the opposite side of the inner bottom plate 100 or the outer bottom plate 200. The other end of the longitudinal part 7011 extends vertically toward the bottom compartment a and is connected to the transversely arranged transverse part 7012.

[0049] Except for the box corner reinforcing longitudinal stiffener 701, the other longitudinal stiffeners 700 are bulb flat steel, T-shaped steel, or angle steel.

[0050] In this embodiment, the longitudinal ribs 700 other than the box corner reinforcing longitudinal rib 701 are bulb flat steel. One end of the web of the bulb flat steel is connected to the opposite side of the inner bottom plate 100 and the outer bottom plate 200. The bulbous end of the bulb flat steel extends vertically toward the bottom compartment a. In other embodiments, the longitudinal ribs 700 other than the box corner reinforcing longitudinal rib 701 are T-shaped profiles. The structure of the T-shaped profile is the same as that of the box corner reinforcing longitudinal rib 701 with a T-shaped cross-section.

[0051] In summary, by limiting the installation position and arrangement of the trusses and longitudinal girders 700, this double-bottom structure allows for the construction of ships of the same size using fewer structural components while ensuring structural strength.

[0052] In this system, longitudinal girders 400 corresponding to the corners of containers are installed in the tunnel area 401, and reinforcing longitudinal girders 500 with a large interval are installed between the tunnel area 401 and the inner shell 600. The reinforcing longitudinal girders 500, together with the corner reinforcing longitudinal girders 701 corresponding to the corners of containers, provide support for the double bottom, reduce the number of longitudinal girders in the bottom compartment a and the corner reinforcement structure, and at the same time meet the structural strength requirements, thereby improving construction efficiency and reducing construction costs.

[0053] This double-bottom structure is suitable for the double bottom of cargo holds on multipurpose vessels, meeting the loading requirements of bulk cargo, steel coils, and containers.

[0054] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The scope of patent application of the present invention should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A double bottom structure for a ship, wherein an inner bottom plate and an outer bottom plate are provided on the hull at intervals from top to bottom, a bottom compartment is formed between the inner bottom plate and the outer bottom plate, an inner shell is provided on the outer side of the hull in the width direction, and an array of container areas of standard container width are provided in the cargo hold above the inner bottom plate. Its features are, On the opposite side of the inner bottom plate and the outer bottom plate, there are mounting parts arranged at equal intervals along the width direction of the hull. Each container area has a number of mounting parts within its width range. On the inner bottom plate, the mounting parts corresponding to both sides of the width of the container area are corner mounting parts. The corner mounting parts are aligned with the center position of the line connecting two adjacent corners of the container areas in the width direction of the hull. The bottom compartment is provided with tubular longitudinal girder and reinforcing longitudinal girder arranged sequentially from the centerline of the hull to the line connecting the inner shell; The tube girder is located at the corner mounting part of the container near the centerline of the hull. The tube girder, the inner bottom plate and the outer bottom plate enclose a tube area symmetrically arranged about the centerline of the hull. The tube area covers an integer number of container areas in the width direction of the hull. The mounting portion of the reinforcing longitudinal girder, which is located between the tube area and the inner shell, has a distance between two adjacent reinforcing longitudinal girder in the hull width direction that is 1-2 times the width of the container area; In addition to the installation of the longitudinal girder and the reinforcing longitudinal girder, the mounting part is equipped with longitudinal ribs, wherein the longitudinal rib corresponding to the box corner mounting part is a box corner reinforcing longitudinal rib; The cross-section of the box corner reinforcing longitudinal rib is T-shaped; The box corner reinforcing longitudinal rib includes a longitudinal section and a transverse section. One end of the longitudinal section is connected to the inner bottom plate or the opposite side of the outer bottom plate, and the other end of the longitudinal section extends vertically toward the bottom compartment and is connected to the transversely arranged transverse section.

2. The double-bottom structure of a ship according to claim 1, characterized in that, The number of tunnel areas is 1, the width of the tunnel area is close to the width of a standard shipping container, and the centerline of the tunnel area coincides with the centerline of the ship's hull.

3. The double-bottom structure of a ship according to claim 1, characterized in that, There are two tunnel zones, and the width of each tunnel zone is approximately the width of two standard shipping containers. The tunnel longitudinal girder shared by the two tunnel zones is set along the centerline of the hull.

4. A double-bottom structure for a ship according to claim 1, characterized in that, In the width direction of the hull, between the tunnel area and the inner shell, 3-4 longitudinal ribs are provided within the width range of each standard container.

5. A double-bottom structure for a ship according to claim 1, characterized in that, The longitudinal ribs, except for the box corner reinforcing longitudinal rib, are made of bulb flat steel, T-shaped steel, or angle steel.

6. A double-bottom structure for a ship according to claim 1, characterized in that, In the width direction of the hull, 4-5 longitudinal girders are provided between adjacent reinforcing longitudinal girders.

7. A double-bottom structure for a ship according to claim 1, characterized in that, The mounting portion on the side of the inner bottom plate opposite to the side of the outer bottom plate corresponds one-to-one with the mounting portion on the side of the outer bottom plate opposite to the side of the inner bottom plate.

8. A double-bottom structure for a ship according to claim 1, characterized in that, Each of the aforementioned reinforcing longitudinal girder extends fully within the lower compartment.

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