JPH0364358B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to the superstructure of a ship in which a steel wall is arranged below the deck.

Prior Art As a stiffening method for the deck of the superstructure of a ship as described above, a lattice structure consisting of beams arranged laterally and girders supporting the beams is known. Although the lattice structure stiffening system minimizes the weight of the stiffener required, it has the following problems: That is, the beam is reinforced at appropriate intervals to form a deep beam with the same dimensions as the girder, so the structure is quite complex. In addition, the depth of girders and deep beams is generally about 280mm, and the space under the ceiling is only about 500mm, so the rigging space below deck is quite narrow, and the space for piping, electrical circuits, etc.
Trunk placement is becoming difficult. Furthermore, due to its structure, it is difficult to use spot welding to join the deck and stiffeners, and because fillet welding is used, there is a lot of welding distortion, and it takes a lot of time (for example, 1 approximately 3,000 hours per vessel).

Purpose of the Invention The purpose of the present invention is to provide a rational ship superstructure that solves the above problems.

Structure of the Invention In the superstructure of a ship according to the present invention, assembly beams are arranged only in one direction as deck stiffeners, and the assembly beams are arranged at an upper edge member joined to the lower surface of the deck and below the upper edge member. It consists of a lower edge material and a connecting member that connects them.

Embodiment and operation Figures 1 and 2 show a part of the superstructure of a ship, and the living area 3 is located between A deck 1 and B deck 2.
It is becoming.

As shown by the thick solid line in Fig. 1, between the B deck 2 and the A deck 1, a steel wall 4 constituting the surrounding wall of the accommodation area 3 and a steel wall 5 that partitions the interior of the accommodation area 3 are arranged. . Furthermore, within the living area 3, several partition walls 6 are arranged, as shown by thick chain lines in FIG. On the lower surface of the B deck 2, as a stiffener, a truss assembly beam 7 is arranged only in the vertical direction, as shown by thick broken lines in FIG. Further, on a part of the lower surface of the B deck 2, as shown by a thin broken line in FIG. 1, a short small beam 8 made of flat steel is arranged.

As shown in detail in FIGS. 3 and 4, the assembly beam 7 includes an upper edge member 9 joined to the lower surface of the B deck 2,
It consists of a lower edge member 10 arranged in parallel below, and a truss member (connecting member) 11 that connects these members, and each of these members 9, 10, 11 is made of an angle-shaped member. The flange of the upper edge member 9 and the B deck 2 are joined by carbon dioxide arc spot welding from the upper edge member 9 side.

As a general rule, it is desirable that the assembly beam 7 be a standard product that can be applied to all ships. In this way, the assembled beam 7 can be manufactured as a factory product and can be handled in the same way as conventional shaped steel, resulting in lower costs.

Generally, when the stiffeners are arranged in only one direction, the weight of the stiffeners required increases compared to the conventional lattice structure stiffening system. For this reason, the assembly beam 7
It is desirable to deepen the depth to the attic space (for example, approximately 500 mm). In this way, a large amount of rigidity can be obtained with a small member, so that the increase in the weight of the required materials can be minimized.

The residential area 3 described above is assembled, for example, as follows.

That is, first, the B deck 2 is turned over, the assembly beams 7 are arranged upside down on top of it, and the upper edge material 9 and the B deck 2 are joined by carbon dioxide arc spot welding from the assembly beam 7 side (upper side). Join. At this time, since the assembly beam 7 is arranged only in the vertical direction, the installation work is easy. Furthermore, since carbon dioxide arc spot welding can be employed, welding distortion is less likely to occur compared to conventional fillet welding, and the time required for distortion reduction is reduced. Next, B deck 2 is turned upside down.
Steel walls 4 and 5 will be installed on top of the roof, and the outfitting work will be carried out in the attic. At this time, since the assembly beams 7 are arranged only in the vertical direction and there are no obstacles in the vertical direction, the outfitting becomes very easy. In addition, the upper edge material 9 of the assembly beam 7
Since a large space is secured between the lower edge member 10 and the truss member 11, lateral outfitting is also made very easy. Next, it is turned upside down so that it is in its normal state and is mounted on the A deck 1, and the necessary internal work is carried out.

In this way, the conventional assembly process can be applied to the accommodation area 3 as is, and carbon dioxide arc spot welding can be easily employed to join the B deck 2 and the assembly beam 7.

Effects of the Invention According to the superstructure of a ship according to the present invention, since the assembly beams 7 are arranged only in one direction as the stiffeners of the deck 2, the structure is simple, the installation work is easy, and the assembly is easy. Since there are no obstacles in the length direction of the beam 7, outfitting becomes very easy. And assembly beam 7
consists of an upper edge material 9 joined to the lower surface of the deck 2, a lower edge material 10 disposed below the upper edge material 9, and a connecting member 11 connecting these, and the upper edge material 9 and the lower edge material Since a space is secured between the assembly beam 10 and the assembly beam 7, outfitting in a direction perpendicular to the assembly beam 7 is also easy. Furthermore, since the assembly beam 7 is used as a stiffener, an increase in the weight of required materials due to the arrangement of the beam in only one direction can be suppressed. In addition, if there is a ceiling lining, the ceiling lining can be attached directly to the lower edge material 10 of the assembly beam 7, so the assembly beam 7 can also be used to stiffen the ceiling lining. The installation procedure can be simplified. Furthermore, if a relatively thin member with a flange, such as an angle-shaped member, is used for the upper edge material 9 of the assembly beam 7, the flange portion can be welded to the deck by carbon dioxide arc spot welding from the assembly beam 7 side. 2, the conventional assembly process can be applied as is, and compared to conventional fillet welding, less welding distortion occurs and the time required for eliminating distortion is reduced.

[Brief explanation of drawings]

The drawings show an embodiment of the invention, and FIG. 1 is a plan view showing the wall below the deck of the superstructure and the arrangement of stiffeners, FIG. 2 is a longitudinal sectional view showing the main parts of the superstructure, and FIG. This figure is an enlarged view showing a part of the assembled beam in FIG. 2, and FIG. 4 is a sectional view taken along the line shown in FIG. 3. 2...Deck, 4, 5...Steel wall, 7...Assembly beam,
9... Upper edge material, 10... Lower edge material, 11... Truss material (connecting material).

Claims (1)

[Claims] 1 In the superstructure of a ship in which steel walls 4 and 5 are arranged below the deck 2, the assembly beam 7 is arranged only in one direction as a stiffener for the deck 2, and the assembly beam 7
The upper structure of a ship includes an upper edge member 9 joined to the lower surface, a lower edge member 10 disposed below the upper edge member 9, and a connecting member 11 connecting these members.