JP2001010583A - Shell plating structure of chip ship - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the cracking and reduce the weight by comprising a vertical deflection preventing structure having a plurality of side longitudinals extending through a horizontal beam in a position upper than the top side stringer in the shell plating upper position of a chip ship and a horizontal deflection preventing structure having a deflection preventing material on the shell plating. SOLUTION: Instead of a plurality of buckling preventing carlings in the past, a plurality of longitudinals 5 of vertical connecting structure is arranged in an upper position through a horizontal beam 3 in parallel to a vertical beam 4 to the depth position of the upper part of about 10-20% to the whole hull depth without providing a rib between the top vertical beam 4 and a deck 6. The longitudinals 5 of vertical connecting structure are constituted as the whole in a continuous structure extending through the vertical beams 4. Accordingly, since the strength to hogging and sagging moments in the upper position can be improved, and the discontinuous part in the middle can be eliminated, the cracking in the middle can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hull-side outer panel of a chip ship, and more particularly, to an upper-side panel structure of the hull side.

[0002]

2. Description of the Related Art Conventionally, a hull, such as a chip ship or a general cargo ship, having a wide opening hatch is required to have a horizontal structure because of a requirement in terms of cargo handling performance. Such a lateral structure of the ship-side structure tends to have a structurally insufficient buckling strength. Therefore, in general, the outer plate-side structure such as this type of chip ship has curling from the viewpoint of preventing buckling. An arranged grid structure is employed.

FIG. 4 is a cross-sectional view of the center of a conventional chip ship, showing only one side of the hull. FIG.
FIG. 6 is a development view of the outer plate structure, and FIG. 6 is a diagram showing a curling arrangement of the outer plate portion from the direction of arrow A shown in FIG.

In FIG. 4, reference numeral 101 denotes an outer plate;
Indicates a ship-side rib, 103 indicates a ship-side horizontal girder, and 104 indicates a ship-side vertical girder. In such a ship-side structure, in the tip ship, a plurality of buckling preventing curlings 105 ₁ , 1 are provided at an upper position in parallel along the ship-side stringer 104.
05 ₂ ... Are provided. Also, in FIG.
Is a deck, 107 ₁ is a bilge hopper tank,
108 is a hatch opening. When the internal structure of the chip hull outer plate structure having such a configuration is developed, as shown in FIG. 5, the deck 106 is disposed at the top, and the ship-side stringer 104 is provided therebelow. Are provided perpendicularly to the ship side cross beams 103 ₁ , 103 ₂ . In the meantime, the ship-side ribs 102 ₁ , 102 ₂ , 102 ₃
Are arranged. And the said ship side stringer 104 ₁ ,
104 ₂ and parallel to the ship side beam 10
2 _1, 103 _2, 103 ₃ Curling 105 ₁ for the buckling prevention during ..., 105 _2, ... it is provided.

This buckling preventing curling 105 ₁ , 10
5 ₂ ... Is 10% from the top to the entire hull depth
The curlings 105 ₁ , 105 ₂ ... Are inclined downward by 35 °. Then, as shown in FIG.
₁ and 105 ₂ ... Are respectively the ship-side cross beams 10
Are provided in a so-called inverted trapezoidal shape, which is joined at the bottom end between 21 ₁ , 103 ₂ , 103 ₃ ..., And have a so-called lattice structure as a whole.

[0006]

The outer plate structure as described above has a lattice structure, so that the weight tends to be heavy and the hull having a large open hatch area is required. In particular, the hull's inherent hogging (stress lifting the center of the "Hogging" ship) and sagging (stress lowering the center of the "Sagging" ship) cause particularly strong stress on the upper side of the ship, and therefore its longitudinal bending At the upper position on the ship side where the influence of stress appears most, cracks tend to occur at the curling end a.

[0007]

SUMMARY OF THE INVENTION Accordingly, the invention according to each claim of the present application has a longitudinal structure in which a longitudinal section is connected to an upper portion of a ship having a large longitudinal bending stress, thereby preventing the occurrence of cracks. Instead of using a lattice structure, the length is made a reinforcing material that works in the vertical direction to reduce the overall weight. Specifically, the invention according to claim 1 of the present application is characterized in that, in a hull side shell structure of a hull having a large opening area such as a tip ship, a plurality of side longitudinals penetrating the hull crossbeam are provided at upper positions of the outer plate. And
The invention according to claim 2 of the present application is the outer plate structure of the chip ship or the like according to claim 1, wherein the plurality of side longitudinal structures have a depth of 10 to 20 from the upper deck with respect to the hull depth.
% At a depth position. further,
The invention according to claim 3 of the present application is characterized in that, in the outer plate structure of the chip ship or the like according to claim 1 or 2, the plurality of side longitudinals have a downward inclination of 35 °.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the drawings. FIG.
FIG. 1 is a central cross-sectional view of a tip ship according to an embodiment of the present invention, and is a view corresponding to FIG. 4 of the related art. In FIG. 1, 1 is an outer panel, 2 is a rib on a ship side,
Reference numeral 3 denotes a ship-side horizontal girder, and 4 denotes a ship-side vertical girder. 5, instead of the conventional multiple buckling preventing curling 105 _1, 105 _2, ..., the ship's side an upper position, the hull cross beams 3 are provided through the, longitudinals 5 ₁ vertical articulated structure, 5 is a ₂ .... Further, in FIG., 6 is the same deck as described in the conventional chip ship central cross-sectional view, 7 _1, bilge hopper tank, is 8, is the same hatch opening.

FIG. 2 shows a conventional buckling preventing curlin.
Gu 105₁, 105_TwoInstead of ...
A plurality of lons having a vertically connected structure penetrating through the
Di 5 ₁, 5_TwoChip-outboard structure with ...
FIG. 5 is a development view of FIG.
FIG. In FIG. 2, the deck 6 at the top of the hull
The ship-side stringer 4 is provided below the ship-side stringer 4.
Is perpendicular to this,₁, 3_Two... provided
In addition, the lower part of the side stringer 4 is vertically
Said ribs 2₁, 2_Two, 2_Three... provided on the ship side
The structure from the part to the lower part of the ship is different from the conventional structure on the ship
No structure.

However, the ship-side upper structure is different from the conventional structure in that the ship-side ribs 2 ₁ , 2 ₂ , 2 _3, ... Are provided between the uppermost ship-side stringer 4 ₁ and the deck 6. it not, the longitudinals 5 ₁ of a plurality of vertical articulated structure parallel to the ship's side stringers 4, 5 _2, 5 ₃ ... is provided. Longitudinals 5 ₁ of the plurality of the plurality of longitudinal coupling type structure, 5 _2, 5 ₃ region ... are provided, as shown in FIG. 2, for the whole of the hull depth, the 10-20 % ship's side and to the upper depth position of arranging a plurality of longitudinals 5 _1, 5 _2, ... of the connecting vertical type structure. 3, to show the longitudinals 5 _1, 5 _2, ... of the outer shape of the plurality of longitudinal coupling type structure is a diagram showing the longitudinals side section showing the arrow A cross section of FIG. FIG.
As shown in the figure, the longitudinal joint type longi 5 has a downward inclination structure of 35 ° like the conventional curling 105, but the overall shape thereof is each ship-side rib 2 ₁ , 2 ₂ , 2 _3.
- instead of the so-called inverted trapezoidal shape in which only the bottom end is joined between, and with the respective side shell stringers 4 _1, 4 _2, 4 ₃ continuous structure extending through the inter .....

The present invention is characterized in that the upper part of the hull having a large longitudinal bending stress on the side of the hull has a longitudinally connected longitudinal structure,
With such a structure, hogging (“Hoggin
g ”the stress that lifts the center of the ship) or sagging (“ Saggin
g "Stress lowering the center of the ship) provides a particularly effective reinforcing effect on the stress on the upper part of the ship where particularly strong stress is applied to the upper part of the ship.

[0012]

As described above, the invention according to each claim of the present application relates to the outer plate structure on the upper side of the ship such as a chip ship, which has a structure in which a plurality of continuous longitudinals penetrating through the ship's vertical girder are provided. This has the effect of increasing the strength against hogging and sagging moment at the upper position.
In addition, since the longe has a 35 ° downward inclined structure, the chips do not stay, and the longitudinally connected structure eliminates discontinuous portions in the middle, thereby eliminating cracks in the middle. Has the effect. In addition, since the longitudinal connection structure is used, it is not necessary to adopt the above-described lattice structure as in the related art, and as a result, it is possible to reduce the weight of this region.

[Brief description of the drawings]

FIG. 1 is a center cross-sectional view of a tip ship according to an embodiment of the present invention.

FIG. 2 is a chip hull plate structure having a structure in which a plurality of longitudinally connected longitudinals 5 ₁ , 5 _2. FIG.

FIG. 3 is a longitudinal section view showing a cross-section of an arrow A in FIG.

FIG. 4 is a diagram showing a center transverse cross-sectional view of a conventional chip ship.

FIG. 5 is a view showing a development view of the outer panel structure.

FIG. 6 is a diagram showing a curling arrangement of the outer plate portion from a direction of an arrow A shown in FIG. 4;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outer board 2 ... Ship side rib 3 ... Ship side horizontal girder 4 ... Ship side vertical girder 105 ... Curling for buckling prevention 5 ... Longitudinal of vertical connection type structure 6 ... Deck 7 ₁ ... Bilge hopper tank 8 ... Hatch opening

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[Procedure amendment]

[Submission date] March 9, 2000 (200.3.9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

[Title of the Invention] Chipboard outer plate structure

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007]

SUMMARY OF THE INVENTION Accordingly, the invention according to each claim of the present application has a longitudinal structure in which a longitudinal section is connected to an upper portion of a ship having a large longitudinal bending stress, thereby preventing the occurrence of cracks. Instead of using a lattice structure, the length is made a reinforcing material that works in the vertical direction to reduce the overall weight. Specifically, the invention according to claim 1 of the present application relates to a chipboard outer plate structure, in which a plurality of side longitudinals penetrating a ship-side cross beam provided above the uppermost side stringer at a position above the ship-side outer plate of the chipboard ship. And a horizontal stiffening structure made of a stiffener provided at a position from the center to the lower part of the ship side outer plate. The invention according to claim 2 of the present application is the outer plate structure of a chip ship according to claim 1, wherein the plurality of side longitudinal structures are located at a depth of 10 to 20% from the upper deck with respect to the hull depth. It is characterized by being provided. Further, the invention according to claim 3 of the present application is directed to claim 1
Or in the chipboard outer plate structure according to claim 2,
The plurality of side longes may have a downward inclination of 35 degrees.

Claims (3)

[Claims] 1. An outer plate structure for a chip ship or the like, wherein a plurality of side longitudinals penetrating the ship-side cross beam are provided at an upper position on the ship side outer plate of a hull having a large opening area such as a chip ship. 2. The outer plate of a chip ship or the like according to claim 1, wherein the plurality of side longitudinal structures are provided at a depth of 10 to 20% from an upper deck with respect to a hull depth. Construction. 3. The outer plate structure of a chip ship or the like according to claim 1, wherein the plurality of side longitudinals have a downward inclination of 35 °.