JPS58218492A - Construction of hull - Google Patents

Abstract

PURPOSE:To minimize forcible deformation of a strut and obtain a strong hull, by forming both the connection part between the strut supporting a deck structure and the deck structure to a hinged joint and the connection part between the strut and the neighboring deck structure or the ship bottom structure also to a hinged joint. CONSTITUTION:Upper and bottom ends of struts 4 are fixed respectively to neighboring deck structures 2, 2 or the deck structure 2 and a ship bottom structure 3 by pins in the center line axial direction of a hull, and a hinged joint 5 is constituted. If rolling motion is caused by a wave or the like in this hull, rhombic deformation of a ship body cross section is caused, however, bending moment is never induced in the strut 4 itself by the hinged joint 5, accordingly strength against compression is not decreased and safety design of the strut can be performed. Accordingly, a strong ship body can be obtained.

Description

[Detailed description of the invention] TECHNICAL FIELD The present invention relates to ship structure.

For example, in consideration of the cargo volume of car carriers, roll-on roll-off ships, etc., in consideration of stowage efficiency and cargo handling efficiency, conventional multi-layer deck structures 2,
A structure is adopted in which the number of bulkheads is reduced by welding struts 1 between the two spaces and between the deck structure 2 and the bottom structure 3, respectively.

However, in such a hull structure, when the hull cross section is deformed into a prize, as shown by the broken line in the partial cross-sectional view of FIG. A large forced deformation occurs, which tends to increase the bending moment, making it difficult to safely design the strength of the support.

The present invention was proposed in view of these circumstances, and
Eliminate or minimize undesirable forced deformation of the pillar.

The purpose is to provide a hull structure that ensures the safety of the props.
It is characterized in that if the connecting portion of the strut supporting the deck structure with the deck structure is a slide joint, the connecting portion of the pillar with the adjacent deck structure or ship bottom structure is a slide joint.

One embodiment of the present invention will be explained with reference to the drawings.
A), '(B), and (C) are partial cross-sectional views thereof, FIG. 5 is a partial enlarged view showing the V section of FIG. 4(C), and FIG. FIG. 6 is a partially enlarged view showing the deformation of the strut when the cross section of the hull is deformed into a diamond shape in B) and (C).

In the above diagram, the same symbols as in Figure 1 indicate the same members, and 4 indicates the adjacent deck structure 2 at the upper and lower ends, respectively.
, 2 or deck structure 2° This is a support that is fixed to the bottom structure 3 with a pin in the direction of the hull centerline, as shown in Fig. 4 (C).

The support column 4 constitutes a sliding joint 5 via the deck structure 2 and the pin passing through it. The slide 5 may be a slide that allows rotation in any direction.

In such a hull structure, when the hull rolls due to waves, etc., the lateral component of the cargo load on the deck causes the hull to roll.
A diamond-shaped deformation of the cross section of the hull as shown by the broken line in Figure 2 occurs.

At this time, a slide joint 5 is provided at the joint between the support column 4 and the deck structure 2 or the bottom structure 3.

As shown in Fig. 6, the mounting angle θ of the strut 4 with respect to the push plate structure 2 or the bottom structure 3 is not restricted to 90°, and can easily cause relative rotation. Therefore, no bending moment is induced in the support 4 itself.

Generally, struts that are subjected to an axial compressive load will buckle if a bending moment is also applied at the same time.

Its compressive strength is significantly reduced due to phenomena such as yielding, but if no bending moment is induced, the column 4 will receive only the axial compressive load, which is an advantageous condition for increasing its strength. becomes.

In the conventional hull structure, as shown in Fig. 1, there is no sliding joint 5 and the deck structure 2 or bottom structure 3 and the strut l are rigidly connected by welding, which reduces the compressive strength of the strut. However, according to the present invention, the bending moment of the support column is removed, so a safe support design can be used. .

1 The sliding joint 5 is rotatable in all directions.

By doing so, the above effect can be made more reliable.

In short, according to the present invention, if the connecting portion of the strut supporting the deck structure with the deck structure is a slide joint, and the connecting portion of the pillar supporting the deck structure with the adjacent deck structure or the bottom structure is a slide joint. , the present invention is extremely useful industrially because it provides a strong hull.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a known car carrier, and FIG. 2 is a cross-sectional view showing a modification of FIG. 1. FIG. 3 is a partially enlarged view showing the deformation of the support column in FIG. 2, FIGS. A partial enlarged view showing the V section in Figure 4 (C), Figure 6 is a partial enlarged view showing the V section in Figure 4 (A), (B), (
It is a partially enlarged view showing the deformation of the strut when the cross section of the hull is deformed into a diamond shape in C). section. Sub-Agent Patent Attorney Tadashi Tsukamoto Bunsai 1 Usutaku 2 Country (A) (e)) (c)

Claims (1)

[Claims] A hull structure characterized in that, if the connecting portion of a strut supporting the deck structure with the deck structure is a sliding joint, the connecting portion of the supporting column with an adjacent deck structure or a ship bottom structure is a sliding joint.