Transverse strong frame trepanning structure of bottom side cabin of double-hull ship

Abstract

The utility model discloses a transverse strong frame trepanning structure of a bottom side tank of a double-hull ship. The transverse strong frame trepanning structure comprises a transverse non-watertight strong frame arranged on the bottom side tank. The bottom side tank comprises a bottom side tank inclined plate arranged between the broadside inner shell plate and the inner bottom plate; the transverse non-watertight strong frame comprises a strong frame web plate arranged between the bottom side tank inclined plate and the broadside outer plate; a large circular opening is formed in the strong frame web; the left end and the right end of the large hole are located on the left side and the right side of the broadside inner shell plate respectively, and the upper end and the lower end of the large hole are located on the upper side and the lower side of the inner bottom plate respectively. And a ring rib panel is arranged at the edge of the large opening. The stress of the bottom side tank structure is relatively more uniform after the bottom side tank structure is stressed, the stress concentration of the structure is improved, and the structure is safer; the structural weight is lighter, and the construction cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and particularly to a transverse strong frame opening structure for the bottom side tank of a double-hull ship. Background Art

[0002] The transverse non-watertight strong frame structure of the bottom side tank of a double-hull ship generally reduces the structural weight by arranging large openings in the middle. In the existing typical opening structure form, it offsets a certain distance from the side shell plate, the bottom shell plate, and the inclined plate of the bottom side tank respectively, and a fillet with a certain radius is derived at the intersection of each two, and a ring of stiffening rib panels is generally arranged at the opening edge.

[0003] Disadvantages of the prior art: Under the action of typical loads, there are often large stress concentrations at the circular arc positions in the opening structure form of the traditional technical solution. It is relatively difficult to make the opening area larger, so the weight of the strong frame structure is relatively greater, which is not conducive to reducing the weight of the ship structure and increases the cost of the ship. In addition, the buckling strength of the structure often does not easily meet the requirements of the classification society's specifications, and more buckling stiffeners need to be added, and the number of components is often large, and the construction cost of the shipyard is relatively higher. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned defects existing in the prior art and provide a transverse strong frame opening structure for the bottom side tank of a double-hull ship.

[0005] The present invention solves the above technical problem through the following technical solutions:

[0006] A transverse strong frame opening structure for the bottom side tank of a double-hull ship, which includes a transverse non-watertight strong frame arranged in the bottom side tank; the bottom side tank includes an inclined plate of the bottom side tank arranged between the side inner shell plate and the inner bottom plate; the transverse non-watertight strong frame includes a strong frame web arranged between the inclined plate of the bottom side tank and the side shell plate; a circular large opening is arranged on the strong frame web; the left end and the right end of the large opening are respectively located on the left side and the right side of the side inner shell plate, and the upper end and the lower end of the large opening are respectively located on the upper side and the lower side of the inner bottom plate; a ring of rib panels is arranged at the opening edge of the large opening.

[0007] Further, the ring of rib panels is circumferentially distributed along the opening edge of the large opening.

[0008] Further, the ring of rib panels is a flat steel.

[0009] Further, the ring of rib panels is symmetrically distributed on both sides of the strong frame web.

[0010] Further, the ring of rib panels is only distributed on one side of the strong frame web.

[0011] Further, the ring of rib panels is asymmetrically distributed on both sides of the strong frame web.

[0012] Furthermore, the large opening area is 10% - 40% of the area of the strong frame web.

[0013] Furthermore, a first anti-tipping gusset plate is provided on the strong frame web, and the first anti-tipping gusset plate is arranged between the hoop rib panel and the bottom side tank inclined plate.

[0014] Furthermore, a second anti-tipping gusset plate is provided on the strong frame web, and the second anti-tipping gusset plate is arranged between the hoop rib panel and the side shell plate.

[0015] Furthermore, stiffening ribs are provided on the strong frame web.

[0016] The beneficial effects of the present invention are as follows: The present invention provides a large opening in the middle of the transverse non-watertight strong frame. The stress condition at the large opening is better, and the stress is relatively more uniform, making the structure safer; the opening area on the strong frame web is larger, which is more conducive to reducing the weight of the ship structure, thereby reducing the cost of the ship; fewer structural stiffening ribs need to be provided, which is beneficial to reducing the number of structural components, thereby reducing the construction cost of the shipyard. By optimizing the opening form in the middle of the transverse strong frame structure of the bottom side tank of the double-hull ship, the stress of the bottom side tank structure is relatively more uniform after being stressed, improving the stress concentration of the structure and making the structure safer; it is beneficial to increase the opening area, thereby making the structure lighter, and at the same time, it is also beneficial to reducing the number of structural components and reducing the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, a preferred embodiment is given and the present invention will be described more clearly and completely in conjunction with the accompanying drawings.

[0019] As Figure 1 shown, a transverse opening structure of the bottom side tank of a double-hull ship includes a transverse non-watertight strong frame 10 provided in the bottom side tank; the bottom side tank includes a bottom side tank inclined plate 15 provided between the side shell inner plate 12 and the inner bottom plate 14; the transverse non-watertight strong frame 10 includes a strong frame web 16 provided between the bottom side tank inclined plate 15 and the side shell plate 13.

[0020] A circular large opening 17 is formed on the strong frame web 16; the left end and the right end of the large opening 17 are respectively located on the left side and the right side of the side shell inner plate 12, and the upper end and the lower end of the large opening 17 are respectively located on the upper side and the lower side of the inner bottom plate 14.

[0021] The large opening area is 10% - 40% of the area of the strong frame web.

[0022] The strong frame web 16 is arranged within the area enclosed by the horizontal girder 11, the bottom side tank sloping plate 15, the double bottom longitudinal girder 19, and the side shell plating 13. Among them, the horizontal girder 11 is located at the top of the bottom side tank, and the double bottom longitudinal girder 19 is located below the bottom side tank sloping plate. The area of the strong frame web within the area enclosed by the horizontal girder 11, the bottom side tank sloping plate 15, the double bottom longitudinal girder 19, and the side shell plating 13 is the area of the strong frame web.

[0023] A ring stiffener panel 18 is provided at the hole edge of the large opening 17. The ring stiffener panel 18 is circumferentially distributed along the hole edge of the large opening. The ring stiffener panel 18 is a flat steel.

[0024] The ring stiffener panel is fixed to the strong frame web. There are various connection methods between the ring stiffener panel and the strong frame web.

[0025] In the first method, the ring stiffener panels are symmetrically distributed on both sides of the strong frame web.

[0026] In the second method, the ring stiffener panels are only distributed on one side of the strong frame web.

[0027] In the third method, the ring stiffener panels are asymmetrically distributed on both sides of the strong frame web.

[0028] A first anti-tilting bracket 21 is provided on the strong frame web 16. The first anti-tilting bracket 21 is arranged between the ring stiffener panel 18 and the bottom side tank sloping plate 15. One end of the first anti-tilting bracket is fixedly connected to the ring stiffener panel, and the other end of the first anti-tilting bracket is fixedly connected to the longitudinal member of the bottom side tank sloping plate.

[0029] A second anti-tilting bracket 22 is provided on the strong frame web 16. The second anti-tilting bracket 22 is arranged between the ring stiffener panel 18 and the side shell plating 13. One end of the second anti-tilting bracket is fixedly connected to the ring stiffener panel, and the other end of the second anti-tilting bracket is fixedly connected to the longitudinal member of the side shell plating.

[0030] Reinforcing ribs 20 are provided on the strong frame web 16.

[0031] The transverse non-watertight strong frame 10 of the bottom side tank is subjected to cargo loads from the bottom side tank sloping plate 15, the side shell plating 13, etc., external seawater loads on the side, or the combined action of various loads under different load conditions. Since the large opening 17 on the strong frame web 16 is in a circular structural form and the ring stiffener panel 18 is provided for strengthening the hole edge, the transverse non-watertight strong frame 10 is more evenly stressed. A plurality of reinforcing ribs are reasonably arranged on the strong frame web 16, so that the yield and buckling strengths of the transverse non-watertight strong frame 10 can meet the strength requirements of the classification society. Since the large opening 17 is in a circular structure and has better stress, the large opening 17 can be made larger, which is beneficial to reducing the structural weight; at the same time, it also enables the number of reinforcing ribs to be set less, which is beneficial to reducing the number of structural members and beneficial to reducing the construction cost of the shipyard.

[0032] The present invention provides a large opening in the middle of the transverse non - watertight strong frame. The stress condition at the large opening is better and the stress is relatively more uniform, making the structure safer. The opening area on the web of the strong frame is larger, which is more conducive to reducing the weight of the ship structure, thereby reducing the cost of the ship. Fewer structural stiffeners need to be provided, which is beneficial to reducing the number of structural components, thus reducing the construction cost of the shipyard.

[0033] The present invention optimizes the opening form in the middle of the transverse strong frame of the double - hull ship's bottom tank to make the stress of the bottom tank structure relatively more uniform after stress, improve the stress concentration of the structure, and make the structure safer. It is beneficial to increase the opening area, thereby making the structure lighter, and at the same time, it is also beneficial to reduce the number of structural components and reduce the construction cost.

[0034] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only an example. The protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A transverse stiffener opening structure for the double-bottom tank of a double-hull ship, which comprises a transverse non-watertight stiffener provided in the double-bottom tank; the double-bottom tank includes a double-bottom inclined plate provided between the inner side shell plate and the inner bottom plate; the transverse non-watertight stiffener includes a stiffener web provided between the double-bottom inclined plate and the outer side shell plate; characterized in that, A circular large opening is provided on the web of the strong frame; the left end and the right end of the large opening are respectively located on the left side and the right side of the inner shell plate of the side shell, and the upper end and the lower end of the large opening are respectively located on the upper side and the lower side of the inner bottom plate; a ring rib panel is provided at the hole edge of the large opening.

2. The transverse strong frame opening structure at the bottom side tank of the double-hull ship according to claim 1, characterized in that, The ring rib panel is circumferentially distributed along the hole edge of the large opening.

3. The transverse strong frame opening structure of the double-hull ship bottom side tank according to claim 1, wherein, The ring rib panel is a flat steel.

4. The transverse strong frame opening structure of the double-hull ship bottom side tank according to claim 3, wherein, The ring rib panels are symmetrically distributed on both sides of the web of the strong frame.

5. The opening structure of the transverse strong frame in the bottom side tank of the double-hull ship according to claim 3, characterized in that The ring rib panel is only distributed on one side of the web of the strong frame.

6. The transverse strong frame opening structure of the double-hull ship bottom side tank according to claim 3, wherein The ring rib panels are distributed on both sides of the web of the strong frame in an asymmetric manner.

7. The transverse strong frame opening structure of the double-hull ship bottom side tank according to claim 1, wherein The area of the large opening is 10% - 40% of the area of the web of the strong frame.

8. The transverse strong frame opening structure of the double-hull ship bottom side tank according to claim 1, characterized in that A first anti-tipping bracket is provided on the web of the strong frame, and the first anti-tipping bracket is arranged between the ring rib panel and the inclined plate of the bottom side tank.

9. The transverse strong frame opening structure of the double-hull ship bottom side tank according to claim 1, characterized in that, A second anti-tipping bracket is provided on the web of the strong frame, and the second anti-tipping bracket is arranged between the ring rib panel and the outer plate of the side shell.

10. The transverse strong frame opening structure of the double-hull ship bottom side tank according to claim 1, characterized in that Reinforcing ribs are provided on the web of the strong frame.

Images