JP3056022B2 - Construction method of light alloy refractory structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-alloy refractory structure comprising a light-alloy plate such as an aluminum alloy and a light-alloy stiffener attached to the plate and covered with a heat-insulating material. In particular, the present invention relates to a construction method of a light alloy refractory structure used for a ship.

[0002]

2. Description of the Related Art In recent years, in order to increase the strength of a marine structure, it is common to use a light alloy plate to which a light alloy flexure called a stiffener or a beam is attached.

[0003] Further, from the viewpoint of fire prevention, a specific bulkhead or deck of a ship is required to have fire resistance enough to pass a fire test performed under conditions specified by the International Maritime Organization. . These are generally referred to as Class A bulkheads and Class A decks. For this reason, a ship as described above uses a refractory structure in which a light alloy plate is attached to the bulkhead and deck and a heat insulating material is attached to the upper surface of the stiffener. One example of such a conventionally used refractory structure is shown in FIG. As shown in the figure, a conventional refractory structure is a structure in which an aluminum stiffener 21 is welded to an aluminum plate 20 serving as a substrate, and a rock wool board 22, a ceramic blanket 23, a glass cloth 24, a ceramic blanket 23, Glass cloth 24 and the like are laminated in a plurality of layers and fixed by stud pins 25.

[0004]

However, in such a fire-resistant structure, the mounting process is complicated because the heat-insulating material such as a ceramic blanket, a rock wool board, and a glass cloth is stacked in a plurality of layers. In addition, since the number of processes is increased, problems such as a longer construction period and a rise in labor costs are observed. In addition, since the heat insulating material is also provided inside the stiffener made of a light alloy such as an aluminum alloy, the construction process is complicated and the work becomes more difficult.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned conventional problems by using a light alloy stiffener such as an aluminum alloy or a light alloy stiffener such as a beam welded to an aluminum alloy. In order to maintain the fire resistance performance of a fire-resistant structure made by coating a heat-insulating material such as a ceramic blanket, rock wool, glass cloth, etc. on a light-alloy plate such as a plate, etc. A light alloy joist such as an aluminum alloy is fixed thereon by welding or a fixing member such as a stud bolt, rivet or screw, and a heat insulating material such as a ceramic blanket is fixed by a fixing member such as a stud pin. An object of the present invention is to provide a construction method of a light alloy refractory structure to be attached.

[0006]

According to the present invention, a method for constructing a light alloy refractory structure includes welding a light alloy stiffener to a light alloy plate. In a light alloy refractory structure coated with a heat insulating material, stud pins are welded and attached at predetermined intervals on the light alloy stiffener, and a long hole, a female screw stud and a stud pin are provided. The horizontal joists composed of the flat bars are attached to the stud pins on the light alloy stiffener at intervals by using spring washers through the slots, and the horizontal joists provided at the required intervals are provided. A vertical joist provided with female screw studs and stud pins on the thick is attached at a required interval, and the heat insulating material wound in a roll shape from one side of the joist structure thus constructed is unwound. Stud pins and splices on the structure It is characterized by comprising attached by Guwassha.

[0007]

According to the construction method of the light alloy refractory structure of the present invention thus constructed, the aluminum alloy or steel stiffener made of aluminum alloy or steel is laid in a lattice on a light alloy stiffener such as aluminum alloy. After the joists are attached, the heat insulating material such as a ceramic blanket wound into a roll is unwound and attached with a fixing member such as a stud pin. No heat insulation material is applied inside the flexible material, which simplifies the installation method and shortens the construction period, reduces costs and enables significant cost reductions, and requires special skill. It is easy to build without.

[0008] Other objects, features and advantages of the present invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0009]

1 to 8 show a first embodiment of a light alloy refractory structure manufactured by a method for constructing a light alloy refractory structure according to the present invention. As shown in FIGS. 1 to 4, a light alloy refractory structure made by the construction method of the present invention is called a class A bulkhead and is used for a bulkhead structure of a ship, and is a main material. A stiffener made of aluminum alloy as a light alloy stiffener 2 made of a similar aluminum alloy is welded to a light alloy plate 1 made of an aluminum alloy, and a roll is formed on a surface to be heated during a fire test. A heat insulating material 4 such as a ceramic blanket wound in a shape is attached and constructed.

In such a light-alloy refractory structure, in order to further facilitate the installation of a ceramic blanket as the heat-insulating material 4, first, it is shown in FIG. 5 on the flange portion 3 of the light-alloy stiffener 2. As shown in the figure, threaded stud pins 11, which are a part of the fixing member, are attached by welding at predetermined intervals in the vertical direction. Next, as clearly shown in FIGS. 6 and 7, a horizontal joist 5 made of a flat bar made of a light alloy such as an aluminum alloy and provided with a long hole 12, a female screw stud 14, and a stud pin 15 is prepared. It is preferable to do so. In such a horizontal joist 5, after aligning the long hole 12 with the position of the stud pin 11 provided on the flange portion 3 of the light alloy stiffener 2, the spring washer 16
Fixed by This spring washer 16
For example, a hole slightly smaller than the diameter of the stud pin 11 is provided, and a plurality of, for example, four or six
A plurality of small radial slits are provided, and the edges of the holes are fixed to the threaded portions of the stud pins 11 by being pushed into the stud pins 11.
In this manner, a plurality of horizontal joists 5 are mounted on the flange portion 3 of the light alloy stiffener 2 at a required interval.
A long hole 12 provided in the horizontal joist 5 is provided with a stud pin 11 fixedly provided on the flange portion 3 of the light alloy stiffener 2.
Can be adjusted so as to absorb the error of the position with respect to. Of course, instead of attaching the horizontal joist 5 to the flange portion 3 of the light alloy stiffener 2 made of a stiffener with the stud pin 11 and the spring washer 16, the horizontal joist 5 itself is omitted by omitting the long hole. It can also be attached by welding directly to the stiffener 2.
Further, it is preferable that the horizontal joists 5 are provided with two female screw studs for each of the vertical joints of the heat insulating material 4 as shown in FIGS.

When the horizontal joists 5 are mounted on the flange portion 3 of the light alloy stiffener 2 at a required interval in the vertical direction in this manner, the required horizontal intervals are provided on the horizontal joists 5. And a plurality of vertical joists 6 are, for example, pop rivets 1
7 or screw or screw, or by welding or the like. A female thread stud 14 'for attaching the heat insulating material 4 with a stud pin 15' is attached to the vertical joist 6, and two of the heat insulating material 4 are connected to the left and right lateral seams as shown in FIG. It is preferable to provide four for each of the upper and lower and left and right seams.

In this manner, the horizontal joist 5 and the vertical joist 6 made of a light alloy such as an aluminum alloy are fixed by welding or by fixing members such as female thread studs 14, 14 'and stud pins 15, 15', or screws. This forms a flat portion for facilitating the installation of the heat insulating material 4 made of a ceramic blanket. Then, on such a horizontal joist 5 and a vertical joist 6 made of an aluminum alloy, a heat insulating material 4 made of a ceramic blanket wound in a roll shape from one end side is placed on the flat joist 5 and the vertical joist 6. The female thread studs 14 and 14 'and the stud pins 15 and 15' planted on the horizontal joist 5 and the vertical joist 6 are used in the same manner as described above for the spring washers 18, 18 '. Mounted. As described above, the heat insulating material 4 such as a ceramic blanket, a rock wool blanket, and a glass cloth is formed by a plurality of female screw studs 14 and 14 'and stud pins 15 and 15'. 3 and a light joist made of a horizontal joist 5 and a vertical joist 6.

FIG. 9 shows a partition structure of a first embodiment of a refractory structure made of a light alloy such as an aluminum alloy made by the construction method of the present invention shown in FIGS. Another example is shown in which heat insulating materials 4, 4 'such as ceramic blankets are applied to both sides, and in the second embodiment, the remaining surface, aluminum, which is added to the first embodiment, is used. A heat insulating material 4 'made of a ceramic blanket is fixedly mounted on the surface of a light alloy plate 1 such as an alloy plate. The attachment of the heat insulating material 4 ′ can be performed by a fixing member such as a female screw stud, a stud pin, a spring washer or the like, similarly to the mounting of the heat insulating material 4.

A horizontal joist 5 attached to a stiffener 2 made of a light alloy such as a stiffener or a beam such as an aluminum alloy.
Rivet, female screw stud,
Although a stud pin or the like is used, it goes without saying that welding or other appropriate fixing members such as screws and bolts can be used. Furthermore, female screw studs 14, 1
4 ′ may be used by welding it to a horizontal joist 5 made of a flat bar in advance, or by attaching an appropriate gun after attaching the horizontal joist 5 to a light alloy stiffener 2 such as a stiffener or a beam. The stud pin may be welded with a welding gun.

The refractory structure made of light alloy made by the above-described construction method of the present invention has been described as constituting a ship bulkhead structure. Of course, it can also be used. Further, the horizontal joist and the vertical joist used for the partition wall structure and the deck structure manufactured by the construction method of the present invention are not limited to light alloys such as aluminum alloys, and of course, steel thin plates and the like can also be used. .

[0016]

According to the light alloy refractory structure constructed by the method for constructing a light alloy refractory structure of the present invention constructed as described above, a light alloy plate such as an aluminum alloy plate is provided. In the class A partition wall structure and the class A deck structure, which are formed by welding a light alloy stiffener such as an aluminum alloy stiffener or a beam, the light alloy stiffener is formed in a grid on the light alloy stiffener. Female threaded studs and stud pins, springs are mounted on horizontal horizontal and vertical joists while unwinding a heat insulating material such as a ceramic blanket wound in a roll, after attaching steel horizontal and vertical joists. Since it is attached by a fixing member such as a washer, it can be installed simply and in a short time only with a heat insulating material such as a ceramic blanket, and no heat insulating material is applied inside the light alloy stiffener. Together with method of construction is simplified, the construction period can be greatly shortened, cost also enables significant cost reduction can be reduced, special skill technology can be easily mounted without the required all. Further, a light alloy refractory structure such as an aluminum alloy produced by the construction method of the present invention satisfies a sufficient fire resistance performance value required for a normal standard fire test. .

In the method of constructing a light alloy refractory structure according to the present invention, the conventional direct bonding method of the class A partition wall structure and the class A deck structure requires time and labor costs, and requires a light alloy material. Compared with the fact that the fire protection structure of a ship having a structure is very expensive, the construction method of the aluminum alloy fire-resistant structure of the present invention is simple, and the time and labor cost are 1/2 to 1/3. The time and labor costs can be reduced, shortening the construction period and reducing costs.In addition, by providing a space between the aluminum alloy joist and the aluminum alloy plate, the weight of the ceramic blanket, which is a heat insulating material, can be reduced. There are effects such as occurrence.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a light alloy refractory structure manufactured by a construction method according to the present invention.

FIG. 2 is a plan sectional view of the light alloy refractory structure of FIG. 1;

3 is an enlarged partial cross-sectional plan view of the light alloy refractory structure of FIG. 1. FIG.

FIG. 4 is an enlarged partial longitudinal sectional view of the light alloy refractory structure of FIG.

FIG. 5 is a perspective view showing a light alloy stiffener of a light alloy refractory structure manufactured according to the present invention.

FIG. 6 is a perspective view showing a stiffener, a horizontal joist, and a vertical joist of a light alloy refractory structure manufactured according to the present invention.

7 is an enlarged partial front view showing the light-alloy stiffener of FIG. 6 and horizontal and vertical joists.

FIG. 8 is an enlarged partial sectional view showing a female screw stud, a stud pin, and a spring washer of a fixing member used in the present invention.

FIG. 9 is an enlarged vertical cross-sectional view showing a second embodiment of the light alloy refractory structure manufactured by the construction method of the present invention.

FIG. 10 is a schematic view showing an example of a conventional refractory structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Light alloy board 2 Light alloy stiffener 3 Flange part 4 Heat insulation material 5 Horizontal joist 6 Vertical joist 11 Stud pin 12 Long hole 14 Female thread stud 14 'Female thread stud 15 Stud pin 15' Stud pin 16 Spring washer 17 Pop rivet 18 Spring washer 18 'Spring washer 20 Aluminum plate 21 Aluminum heat insulating material 22 Rock wool board 23 Ceramic blanket 24 Glass cloth 25 Stud pin

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kotaro Iino 1-1-1, Akunouramachi, Nagasaki-shi Inside Nagasaki Shipyard, Mitsubishi Heavy Industries, Ltd. (72) Inventor Shuji Yoshii 2-5-2-5 Tsurumichuo, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture No. Ask Inc. (58) Field surveyed (Int. Cl. ⁷ , DB name) E04B 1/94 B63B 3/48 B63B 3/56

Claims (1)

(57) [Claims] 1. A light alloy stiffener is welded to a light alloy plate,
In a light alloy refractory structure coated with a heat insulating material, stud pins are welded and attached at required intervals on the light alloy stiffener, and long holes, female screw studs and stud pins are provided. The horizontal joists composed of the flat bars are attached to the stud pins on the light alloy stiffener at intervals by using spring washers through the slots, and the horizontal joists provided at the required intervals are provided. A vertical joist provided with female screw studs and stud pins on the thick is attached at a required interval, and the heat insulating material wound in a roll shape from one side of the joist structure thus constructed is unwound. A construction method for a light alloy refractory structure, characterized by being mounted on a structure with stud pins and spring washers.