Ship bulkhead

A technology for ships and next walls, applied in the direction of hull bulkheads, hulls, hull parts, etc., can solve the problems of not considering the action distribution, inability to effectively reduce the buckling yield strength of the next wall, and reduce the weight of the next wall, so as to prevent the buckling and yielding of the next wall. Strength-enhancing effect

Active Publication Date: 2015-07-08
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Patent Document 1 and Patent Document 2, the action distribution of the bending moment (or compressive load) specific to the ship's cabin as described above is not considered, and there is a problem that the buckling of the bulkhead cannot be effectively and simultaneously improved by using the conventional technology. Issues such as yield strength and weight reduction of bulkheads

Method used

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Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0062] Figure 1 to Figure 3 It is a figure which shows the 1st Embodiment of the ship partition of this invention, The ship partition 1A of this 1st Embodiment is a so-called transverse partition partitioning the cabin of a ship in the direction perpendicular to the direction of travel of a ship, and as figure 1 As shown, in a cabin 2 having an opening 2a for loading in and out of the upper part, the bulkhead 1A for a ship is placed and fixed on a bulkhead platform (seat) 2b.

[0063] The partition wall 1A is formed of a thick metal plate, and has a corrugated structure in which a plurality of flat plate-shaped surface member portions 3A, 4A extending in the vertical direction protrude alternately to the front surface side and the rear surface side of the wall surface of the partition wall. The cabin 2 is extended over the entire width of the width direction (left-right direction). Furthermore, each of the above-mentioned surface member portions 3A, 4A is provided with a ri...

no. 2 Embodiment approach

[0082] In the above-mentioned first embodiment, the case where the rib 5A is provided over the entire length (from the lower end to the upper end) of the surface member portions 3A, 4A in the longitudinal direction has been illustrated and described. However, the present inventors considered that there is room for further improvement regarding the range in which the rib 5A is provided, and intensively studied the range in which the rib 5A is provided.

[0083]Then, the inventors of the present invention conducted a more detailed analysis of the distribution of the bending moment generated in the height direction of the surface member portion of the partition wall when, for example, the cabin is filled with seawater, and obtained the following knowledge: 3A, 4A) and the bending moment generated in the surface member portions 3A, 4A), the range in which the rib 5A is provided is appropriate, and the weight reduction of the partition wall 1A and the improvement of the buckling yie...

no. 3 Embodiment approach

[0110] In the above-described first embodiment, the shape of the plate surface of the rib 5A is shown to be, for example, a substantially rectangular shape, but the shape of the plate surface of the rib 5A of the present invention is not limited to this shape. Therefore, the present inventors considered that the bending moments generated in the surface member portions 3A and 4A were not uniformly distributed when the cabin was filled with seawater (see Figure 5 , 6 ), so the shape of the plate surface of the rib 5A is not substantially rectangular is the most suitable, so refer to Image 6 The present embodiment was completed by intensively examining the appropriate shape of the plate surface of the rib 5A.

[0111] like Image 6 As shown, the bending moments generated in the surface member portions 3A and 4A are not uniformly distributed in the longitudinal direction (height direction). Specifically, the bending moments generated in the buckling-risk portion A and the buc...

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PUM

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Abstract

[Problem] To provide a ship bulkhead that limits increases in the weight of the bulkhead as much as possible, that maintains the load bearing capability with respect to a vertical compression load that is required of the bulkhead, and that is capable of preventing buckling of the bulkhead. [Solution] Provided is a ship bulkhead that comprises a thick metal plate that divides the hold of a ship, that has a wave shape in which a plurality of surface members that are formed to have a plate shape that extends in the vertical direction and follows the width direction of the bulkhead protrude in an alternating manner on the front surface side and the rear surface side of the bulkhead, and wherein a rib is provided at least to a buckling risk area (A) within the range of 95-100% from the top edge of the vertical height of each of the surface members.

Description

technical field [0001] The present invention relates to a partition wall made of a thick metal plate for partitioning a cabin of a ship, and more particularly, to a bending moment generated in a partition wall due to a load acting on the partition wall in the front-rear direction. On the other hand, the compressive load generated on the surface member portion of the partition wall is a partition wall for ships having a high buckling yield strength. Background technique [0002] For example, in a ship such as a bulk carrier for transporting ore, which is a raw material of iron or non-ferrous metal, etc., the cabin of the ship is partitioned by a partition wall formed of a thick metal plate in the cabin of the ship, so that a plurality of cabin space. As a partition for partitioning a cabin, in order to secure the yield strength of the entire partition, a corrugated partition in which a plurality of surface member portions protrude alternately on the front surface side and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B3/60
CPCB63B3/60
Inventor 中安诚明菅野良一半谷公司船津裕二佐藤圭一
Owner NIPPON STEEL CORP
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