JP2008110739A - Collision-resistant hull structure and method for improving collision resistance of vessel and hull - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a collision-resistant hull structure and a method for improving collision resistance of a vessel and hull, capable of improving collision transverse strength when the vessel collides with the other vessel or a structure by using a transverse bulkhead, which used to have reinforcement materials arranged vertically in conventional technologies and have weak resistance against transverse force, as part of the hull structure to reduce deformation at the time of the collision, and of protecting cargo by reducing deformation of a structure constituting a hold. <P>SOLUTION: On the transverse bulkhead 10 partitioning the hold of the vessel, reinforcement materials 12 are arranged in the transverse direction to reduce deformation at the time of the collision. In this collision resistant hull structure, the side structure is formed by a side shell 3 and a longitudinal bulkhead 4, and the reinforcement materials 12 provided in the transverse direction on the transverse bulkhead 10 are extended between the side shell 3 and the longitudinal bulkhead 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a collision-resistant hull structure, a ship, and a method for improving the collision resistance of a ship hull, which can improve the collision resistance in the case of a collision with another ship or structure in a ship hull structure.

  When the colliding ship collides with the ship side of the collided ship from the side, the outer plate of the cargo ship's hold is deformed inward, cracks are formed, holes are opened, and heavy oil or other cargo flows out. For this reason, in order to improve the collision strength, in the conventional ship, the thickness of the horizontal member extending in the bow direction that reinforces the ship side skin is increased, or the ship side longitudinal bulkhead is provided in the outer part constituting the hull. A double ship side structure (see, for example, Patent Document 1), or a triple ship side wall structure.

  However, such measures have the problem that the weight of the hull increases, resulting in an increase in materials and man-hours, resulting in an increase in material costs and production costs. In addition, depending on the type of cargo that is loaded, it may be damaged by the deformation of the cargo, so it is necessary to prevent the wall of the hold from being greatly deformed as it touches the cargo.

  In other words, in the case of ships with granular or liquid cargo, it is more important to prevent the cargo from flowing out due to the breakage than to prevent the cargo from being deformed. In this case, it is important to prevent the internal structure of the hull from being deformed by a collision from the lateral direction and pressing the cargo, thereby preventing the cargo from being deformed or damaged. Therefore, in such a ship hold structure, it is necessary not only to prevent the occurrence of a breakage at the time of collision, but also to suppress the deformation amount of the wall surface of the hold at the time of collision.

On the other hand, the present inventors have obtained the following knowledge. As shown in FIG. 5, the hold of a prior art ship is partitioned by an inner bottom plate 2, a longitudinal partition wall 4, and a lateral bulkhead (Berghead) 10 </ b> X extending in the left-right direction of the ship. A reinforcing material 12X such as a stiffener is provided on the plate (partition plate) 11 in the vertical direction, and these reinforcing materials 12X maintain the strength in the case of shape retention or water immersion. At the time of a collision, the collision energy is absorbed by the deformation of the ship side structure composed of the ship side skin 3 and the longitudinal bulkhead 4. However, the horizontal bulkheads 10X and 20 supporting the ship side structures 3 and 4 in the lateral direction are also changed to the ship side structure. Deformed when pressed. At this time, if the lateral deformation amount of the horizontal partition walls 10X and 20 is reduced, the deformation amount of the ship side structure can also be reduced.
JP-A-6-298161

  The present invention has been made in order to solve the above-described problems. The purpose of the present invention is to provide a horizontal partition wall in which a reinforcing material is disposed in the vertical direction in the prior art and has a low resistance to lateral force. It can be used as part of the hull structure to reduce deformation at the time of collision, and can improve the lateral strength of collision when a ship collides with another ship or structure, and it can deform the structure that constitutes the hold. An object of the present invention is to provide a collision-resistant hull structure that can reduce the amount and protect cargo, a ship, and a method of improving the collision-resistant performance of the ship and the hull.

  In order to achieve the above object, the collision-resistant hull structure of the present invention is configured such that a reinforcing material is provided in a lateral direction in a transverse bulkhead that partitions a ship's hold to reduce a deformation amount at the time of collision. This lateral direction means that the ship is provided so as to be in the horizontal direction of the ship and horizontal or substantially horizontal, that is, the inclination angle with respect to the horizontal is in the range of 0 to 10 degrees. When it is 10 degrees or more, the lateral strength reinforcing effect is weakened, and the arrangement of the reinforcing material is complicated.

  According to this configuration, since the direction of the reinforcing material is set to the horizontal direction, the resistance to the force from the horizontal direction increases, and the horizontal strength of the horizontal partition increases. As a result, the deformation amount of the ship side structure is reduced. According to this configuration, since there is no significant difference in quantity from the conventional horizontal partition wall in which the reinforcing material is provided in the vertical direction, the increase in weight and the increase in production cost can be small, and the cost effectiveness can be increased. .

  In the collision-resistant hull structure, the ship-side structure is formed by a ship-side outer plate and a longitudinal bulkhead, and the reinforcing member provided in the transverse direction on the horizontal bulkhead is disposed between the ship-side outer plate and the longitudinal bulkhead. Extend and configure. With this configuration, the collision strength of the horizontal bulkhead between the ship side skin and the longitudinal bulkhead increases.

  In the above collision-resistant hull structure, the transverse bulkhead is formed as a double wall, and a coupling member for coupling the double bulkhead is provided in the lateral direction. In the prior art, the transverse bulkhead formed by a single wall is a double wall, so that the collision strength of the horizontal bulkhead in the hold and between the ship side skin and the longitudinal bulkhead is significantly improved. Also in this case, the member that joins the double wall surfaces is installed in the lateral direction so as to have a high collision resistance against the collision load from the lateral direction.

  In the above-described double-wall collision-resistant hull structure, the ship-side structure is formed by a ship-side skin and a longitudinal bulkhead, and the double bulkhead and the coupling member provided on the horizontal bulkhead are connected to the ship-side skin and the longitudinal wall. An extension is provided between the partition walls. With this configuration, the collision strength of the horizontal bulkhead between the ship side skin and the longitudinal bulkhead increases.

  These collision-resistant hull structures of the present invention are not limited to the above-described configuration of all the horizontal bulkheads that partition the hold of the target ship, and in particular, the horizontal bulkhead of the portion where the impact strength is desired to be increased The other horizontal partition includes the one not configured as described above.

  A ship of the present invention for achieving the above object is configured to have the collision resistant hull structure described above, and the method for improving the collision resistance of the hull of the present invention for achieving the above object includes A collision hull structure is used.

  And, the collision-resistant hull structure as described above has a great effect of preventing deformation of the hold when collided from the side, so it is rather than a bulk carrier or tanker ship that carries granular or liquid cargo. In a ship such as a container ship, a car carrier ship, or a special cargo ship that transports cargo that has a unique shape that prevents deformation of the cargo itself such as containers in the hold, between the walls of the hold By loading the cargo with a gap that takes into account the amount of deformation, even when it collides with another ship or quay, etc., the hull structure such as the vertical bulkhead of the deformed hold and its reinforcing material is added to the cargo. Since the cargo can be protected without contact, a particularly great effect can be achieved. In the case of a ship having a granular or liquid cargo, there is a demerit that the cargo remains as a residue on the reinforcing material, but this effect can be obtained particularly when the lateral strength at the time of collision is required.

  According to the collision-resistant hull structure, the ship, and the collision-resistant performance improving method for a hull according to the present invention, the collision lateral strength when a ship collides with another ship or a structure can be improved. Cargo can be protected by reducing the amount of deformation of objects.

  DESCRIPTION OF EMBODIMENTS Embodiments of a collision-resistant hull structure, a ship, and a collision-resistant performance improving method for a hull according to the present invention will be described below with reference to the drawings. In the present invention, the reinforcing member for the horizontal bulkhead or the coupling member for joining the two bulkheads of the double horizontal bulkhead is provided not in the vertical direction but in the horizontal direction, that is, in the horizontal direction of the ship. The direction means that the ship is provided in the left-right direction and horizontal or substantially horizontal, that is, the inclination angle with respect to the horizontal is in the range of 0 to 10 degrees. If it is 10 degrees or more, problems such as complicated arrangement of the reinforcing material and the coupling member, insufficient lateral strength for the amount of material, and increased manufacturing man-hours occur.

  As shown in FIG. 1, in the collision-resistant hull structure of the first embodiment of the present invention, the reinforcing material 12 is provided in the transverse direction in the horizontal bulkhead 10 that partitions the ship's hold so as to reduce the deformation amount at the time of collision. Configured. That is, the ship's hold is partitioned by the inner bottom plate 2, the vertical partition 4 and the horizontal partition (Berg head) 10 extending in the left-right direction of the ship. The horizontal bulkhead 10 that partitions the hold in the longitudinal direction of the ship is formed by providing a stiffener or other reinforcing material 12 on the bulkhead plate (partition plate) 10. With these reinforcing materials 12, the horizontal partition 10 maintains the shape and strength when immersed.

  In the present invention, these reinforcing members 12 are provided not in the vertical direction but in the horizontal direction, that is, in the horizontal direction of the ship. With this configuration, at the time of a collision, the collision energy is absorbed by deformation of the ship side structure composed of the ship side outer plate 3 and the longitudinal partition wall 4, and the horizontal partition walls 10 and 20 supporting the ship side structures 3 and 4 in the lateral direction. Also deformed by being pushed by the ship side structure. At this time, in the present invention, since the reinforcing member 12 is provided in the horizontal direction instead of the vertical direction, the horizontal strength of the horizontal partition wall 10 is increased.

  Therefore, since the deformation amount in the horizontal direction of the horizontal partition wall 10 can be reduced, the deformation amounts of the ship side outer plate 3 and the longitudinal partition wall 4 forming the ship side structure can also be reduced. Further, since there is no significant difference in physical quantity from the horizontal partition wall 10X in which the reinforcing material 12X is provided in the vertical direction of the prior art as shown in FIG. 5, the increase in weight and the increase in production cost can be small, and the cost The counter effect can be increased.

  As shown in FIG. 2, the collision-resistant hull structure according to the second embodiment of the present invention is the collision-resistant hull structure according to the first embodiment, and the ship-side structure is formed by the ship-side outer plate 3 and the longitudinal partition wall 4. In addition, a reinforcing member 12 provided in the horizontal direction on the horizontal partition wall 10 is provided to extend between the ship side skin 3 and the longitudinal partition wall 4. That is, a reinforcing member 22 that reinforces the partition plate (partition plate) 21 is provided in the extending direction of the reinforcing member 12 in the horizontal partition wall 20 between the ship-side outer plate 3 and the longitudinal partition wall 4. With this configuration, the collision strength of the transverse bulkhead 20 between the ship side skin 3 and the longitudinal bulkhead 4 is increased.

  As shown in FIG. 3, the collision-resistant hull structure according to the third embodiment of the present invention uses the horizontal bulkhead 30 as double bulkhead plates 31a and 31b, and combines the double bulkhead plates 31a and 31b. The connecting member 32 is provided in the horizontal direction. In this configuration, in the prior art, the horizontal partition formed by one partition plate is formed by the first partition plate 31a and the second partition plate 31b to form a double wall, whereby the resistance of the horizontal partition 30 is improved. Improve impact strength significantly. Even in this case, the coupling member 32 that couples the double wall surfaces 31a and 31b is installed in the lateral direction so as to have a higher collision resistance against the collision load from the lateral direction.

  As shown in FIG. 4, the collision-resistant hull structure according to the fourth embodiment of the present invention is the collision-resistant hull structure according to the third embodiment, and the ship-side structure is formed by the ship-side outer plate 3 and the longitudinal bulkhead 4. In addition, two partition plates 31 a and 31 b and a coupling member 32 that couples the partition plates 31 a and 31 b are provided to extend between the ship-side outer plate 3 and the longitudinal partition wall 4. That is, in the horizontal bulkhead 40 between the ship-side outer plate 3 and the longitudinal bulkhead 4, the horizontal bulkhead 40 is formed by the first bulkhead plate 41a and the second bulkhead plate 41b to form a double wall, and the double bulkhead. A coupling member 42 for coupling the plates 41a and 41b is provided, and the partition plates 41a and 41b and the coupling member 42 are provided on extensions of the partition plates 31a and 31b and the coupling member 32 in the hold. With this configuration, it is possible to increase the collision resistance of the transverse bulkhead 40 between the ship-side outer plate 3 and the longitudinal bulkhead 4.

  And the ship of this invention has said collision-resistant hull structure, and is comprised. Moreover, the impact resistance improvement method of the hull of this invention improves the impact resistance performance in a ship using said impact resistance hull structure. This collision-resistant hull structure and the method for improving the collision-resistant performance of ships and hulls prevent deformation of cargo in the hold rather than bulk ships or tanker ships that carry granular or liquid cargo. It is more effective for the ship to do.

  Moreover, in said 1st-4th embodiment of said FIG. 1-4, although it is set as the double structure of a ship side outer plate and a longitudinal partition on the hull side, it is a single structure only of a ship side outer plate. In addition, the present invention can be applied to a multiple structure in which a plurality of longitudinal partition walls are provided. This also applies to the bottom side of the ship, and the present invention can be applied even if the bottom 2 of FIGS. That is, the present invention can be applied to a single bottom structure, a double bottom structure, or a multiple bottom structure.

It is a perspective view which shows the collision-resistant hull structure of the ship of 1st Embodiment. It is a perspective view which shows the collision-resistant hull structure of the ship of 2nd Embodiment. It is a perspective view which shows the collision-resistant hull structure of the ship of 3rd Embodiment. It is a perspective view which shows the collision-resistant hull structure of the ship of 4th Embodiment. It is a perspective view which shows the structure of the horizontal partition of a prior art.

Explanation of symbols

2 Ship bottom or ship bottom inner plate 3 Ship side skin 4 Longitudinal bulkhead 10 Horizontal bulkhead (inside the hold)
11 Bulkhead plate 12 Reinforcement material 20 Horizontal bulkhead (outside the hold)
21 Bulkhead plate 22 Reinforcing material 30 Horizontal bulkhead (inside the hold)
32 Coupling member 31a First partition plate 31b Second partition plate 40 Horizontal partition (outside of the hold)
41a 1st partition plate 41b 2nd partition plate 42 Coupling member

Claims (6)

  A collision-resistant hull structure characterized in that a reinforcing material is provided in a transverse direction in a horizontal bulkhead that partitions a ship's hold to reduce deformation at the time of collision.   The ship side structure is formed of a ship side outer plate and a longitudinal bulkhead, and the reinforcing material provided in the transverse direction on the horizontal bulkhead is provided to extend between the ship side skin and the longitudinal bulkhead. The collision-resistant hull structure according to claim 1.   A collision-resistant hull structure characterized in that a transverse bulkhead for partitioning a ship's hold is a double wall, and a coupling member for joining the double bulkhead is provided in the lateral direction.   The ship side structure is formed by a ship side outer plate and a longitudinal bulkhead, and the double bulkhead and the coupling member provided in the horizontal bulkhead are provided extending between the ship side outer plate and the longitudinal bulkhead. The collision-resistant hull structure according to claim 3.   5. A ship having the collision-resistant hull structure according to claim 1, 2, 3 or 4.   A method for improving the collision resistance performance of a hull, comprising using the collision-resistant hull structure according to claim 1.

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