JPH0145304Y2 - - Google Patents

Description

[Detailed explanation of the invention] "Industrial application field" This invention relates to the wall structure of nuclear shelters, and specifically, has high radiation shielding ability and electromagnetic wave shielding ability,
Moreover, it relates to something that has been improved to be thinner and lighter.

"Conventional Example" The wall structure of a conventional nuclear shelter is made of mortar or concrete, or one in which reinforcing reinforcing bars are embedded in these.

``The problem that the invention aims to solve'' However, in such conventional examples, the radiation shielding ability and electromagnetic wave shielding ability of mortar and concrete are relatively low, so the walls must be thick and the weight is high. There are problems such as increased weight.

This invention attempts to solve such problems.

"Means for Solving the Problem" In order to solve the above problem, this invention has an inner wall and an outer wall made of concrete, and the inner wall is lined with a frame made of iron plate and a lead plate. , consisting of an interior board fixed to the indoor side surface of the frame, a graphite board superimposed on the outdoor side surface of the frame, and a heat insulating material inserted between the interior board and the iron plate. We are taking technical measures to do so.

"Example" This invention will be described in detail below with reference to the drawings.

The wall structure of the nuclear shelter according to this invention consists of an inner wall 1 and an outer wall made of concrete, for example, as shown in FIG. The inner wall 1 has frames 3, 3 made of iron plates, and connecting reinforcing bars 4 welded to the outdoor sides of the frames 3, 3 are inserted into the insertion holes 5 of the outer wall 2, and fastened with plastic or the like. The outer wall 2 is fixed to the inner wall 1 by tightening the nut 7 to the connecting reinforcing bar 7 via the attached piece 6. Girder frames 8, 8 for attaching interior parts are welded to the indoor side surface of the interior wall 1, and lead plates 9,
Interior boards 10 and 10 lined with 9 are screws 1
It is fixed at 1 and 11. This interior board 10,1
0, a heat insulating material 12, such as glass wool, is inserted between the frame 3 and the interior boards 10, 10. Graphite boards 13, 13, ie, boards made of a mixture of graphite and mortar, are stacked on the outdoor sides of the frames 3, 3.

According to the wall structure of the nuclear shelter constructed in this way, external radiation is blocked by the outer wall 2, and
The graphite mixed in the graphite board 13 of the inner walls 1 and 1 and the lead plate 9 of the interior board 10 provide double insulation. Furthermore, since the lead plate 9 and the graphite board 13 have a much higher radiation shielding ability than mortar or concrete that does not contain graphite, they can each be formed thin, and the wall as a whole can also be made thin. Furthermore, external electromagnetic waves are reliably blocked by the frames 3, 3. In addition, the heat insulating material 12 can provide a sufficient heat insulating effect on the surrounding soil, which has cooled down to, for example, several tens of degrees below zero due to the so-called thick radioactive cloud covering the ground.

Incidentally, as described above, the interior board 10 lined with the lead plate 9, the graphite board 13, and the heat insulating material 12
can be obtained at low cost as a commercial product, and therefore, the girder frames 8, 8 are welded to the frames 3, 3 in a factory, and the interior boards 10, 10, graphite board 13, 13 and the heat insulating material 12... are cut to predetermined dimensions in advance at the factory, and transported to the installation site. At the installation site, the frames are connected to each other with bolts and nuts (not shown), and the connecting reinforcing bars 4 are connected to each other. Weld graphite board 13,
13 and the outer wall 2 to the frames 3, 3, while the heat insulating material 12 and the interior board 10 are assembled on the indoor side of the frames 3, 3. Note that an interior cloth or an X-ray room cloth may be further attached to the inside of the interior board 10.

"Effects" As explained above, this invention includes an inner wall and an outer wall made of concrete, and the inner wall is
An interior board lined with lead is installed on the indoor side, and a graphite board is installed on the outside side, so radioactivity irradiated from the outside is blocked by the concrete exterior wall, and the lead plate and graphite board of the interior board It can be double shielded with the graphite contained in the board.
In addition, lead plates and graphite have much better radiation shielding ability than mortar or concrete, so the thickness of each can be made much thinner than conventional walls in order to provide the desired radiation shielding ability for the entire wall. The overall thickness of the wall can be made thinner than before, and
As a result, its weight can also be reduced. Furthermore, since external electromagnetic waves are absorbed by the iron plate, the wall's ability to shield electromagnetic waves is greatly improved compared to conventional walls. In addition, because a heat insulating material is inserted between the frame and the interior board, the interior of the room will be protected from the cold transmitted from the earth's surface, which is covered with radioactive clouds and cooled down to several tens of degrees below zero, and from the high heat caused by a nuclear explosion. Evacuees can be protected.

Of course, this invention is not limited to the above-mentioned embodiment, but for example, the above-mentioned heat insulating material 12
can be constructed from one or a combination of various known insulating materials. Also, the frames 3, 3 of the inner wall 1...
Connections can be made by, for example, rivets, welding, etc.
It can be modified in various ways.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of this invention. 1...Inner wall, 2...Outer wall, 3...Frame, 9...Lead plate, 1
0...Interior board, 12...Insulating material, 13...Graphite board.

Claims (1)

[Scope of utility model registration request] It has an inner wall and an outer wall made of concrete, and the inner wall is lined with a frame made of iron plate and lead plate,
an interior board fixed to the indoor side surface of the frame;
A wall structure of a nuclear shelter, comprising a graphite board superimposed on the outdoor side surface of the frame, and a heat insulating material inserted between the interior board and the iron plate.