JPH0542433U - Electromagnetic wave shield structure of floor slab - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an electromagnetic wave shield structure for a floor slab that fully shields electromagnetic waves by making full use of the excellent electromagnetic wave shield ability of the deck plate. [Structure] In an electromagnetic wave shield structure of a floor slab constructed by placing concrete 3 on a deck plate 2, an end portion of the deck plate 2 closes an end surface of a valley portion 2a of the deck plate 2. The electromagnetic wave shield liner 5 is attached, and the inner valley portion 2a is filled with the electromagnetic wave shield filling material 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electromagnetic wave shield structure for a floor slab constructed by placing concrete on a deck plate.

[0002]

[Prior Art]

 In recent years, office buildings often have an electromagnetic wave shield structure due to the spread of computers and office automation equipment. In addition, when the floor of the building is made of concrete slab, it is not necessary to remove it, and the deck plate that is a part of the useful skeleton is widely used.

By the way, conventionally, when a room of a building such as an office building has an electromagnetic wave shield structure, a method of sticking an electromagnetic wave shield plate such as a metal plate to the entire inner surfaces of the floor, ceiling and walls of the room is generally widely practiced. ing.

[0004]

[Problems to be solved by the device]

 However, in such a structure, when attaching an anchor bolt for fixing a large computer or OA equipment to the floor, it is necessary to attach it to the body of the floor slab because of its strength. Has to be penetrated.

Therefore, for example, even if it is troublesome, it is necessary to shield the anchor bolts 12 one by one, interposing the braided wire 4 between the lower surface of the floor slab and the angle member 13 (see FIG. 13). However, if the number of anchor bolts installed is large, it takes a lot of time and labor to process them.

Further, even if the deck plate is extremely excellent as a material for shielding electromagnetic waves, since the whole is formed by corrugating in a concavo-convex shape, the electromagnetic wave shield at the end is extremely troublesome.

This invention has been proposed in order to solve the above-mentioned conventional problems, and the electromagnetic wave of a floor slab that can completely shield the electromagnetic wave by fully utilizing the excellent electromagnetic wave shielding ability of the deck plate. It is intended to provide a shield structure.

[0008]

[Means for Solving the Problems]

 In the electromagnetic wave shield structure of the floor slab according to the present invention, an electromagnetic wave shield liner is attached to the end of the deck plate so as to close the end face of the valley part of the deck plate, and the electromagnetic wave shielding filler is filled in the inner valley part. It is composed of

In addition, at the rising portion of the wall, an electromagnetic wave shield plate is further attached inside the wall body, and an electromagnetic wave shield liner is provided between the electromagnetic wave shield plate and the deck plate on both the deck plate and the electromagnetic wave shield plate. It is constructed by welding or soldering to the.

[0010]

【Example】

 FIG. 1 is a sectional view of a floor slab showing an embodiment of the present invention, in which a deck plate 2 is installed on a steel beam 1 and concrete 3 is placed on the deck plate 2 with a predetermined thickness. Has been done.

The deck plate 2 is fixed by welding on the steel beam 1, and the deck plates 2 and 2 that are fitted with each other have their ends lapped with each other, and the braided wire 4 is interposed in the lap portion, Moreover, they are integrally joined by tapping screws or welding (see FIG. 2).

The braided wire 4 is interposed in the lap portion in order to prevent electromagnetic waves from leaking from this portion.

Further, the braided wire 4 is a thin band formed by twisting or braiding a number of metal wires such as an extremely thin copper wire, and has extremely high plasticity. Therefore, by interposing this braided wire 4 in the lap portion of the deck plate 2, the deck plates 2 can be electrically and reliably joined together.

An electromagnetic wave shielding liner 5 is installed at the end of the deck plate 2 so as to completely close the end surface and the upper surface of the valley 2a at the end of the deck plate 2 (see FIG. 1).

The electromagnetic wave shielding liner 5 is made of a metal plate and has a substantially L-shaped cross section, is attached to the end of the deck plate 2 by welding, and is completely embedded in the concrete 3.

The valley portion 2 a inside the electromagnetic wave shielding liner 5 is filled with the electromagnetic wave shielding filling material 6. The electromagnetic wave shielding filler 6 is made of a metal fiber, a metal foil or the like in a cotton shape, has a very good electric conductivity, and can be freely deformed by hand to be easily filled.

When it is not possible to place the end portion of the deck plate 2 directly on the steel beam 1 due to the joint bolts and the joint plate interfering with the joint portion of the steel beam 1, etc. The receiving part 7 is projected from the edge of the upper flange 1a, and the end of the deck plate 2 is placed on the receiving part 7 (see FIGS. 3 and 4).

FIGS. 5, 6 and 7 show an electromagnetic wave shield structure at the rising portion of the wall, and electromagnetic wave shield liners 8 and 9 are attached to the ends of the deck plate 2 by welding.

Like the electromagnetic wave shielding liner 5, the electromagnetic wave shielding liner 8 is formed of a metal plate in the shape of a strip plate so that the end face of the deck plate 2 completely closes the end face of the valley 2a. , Are attached by welding. Further, the electromagnetic wave shield liner 9 is formed in a substantially L-shaped cross section, and is mounted on the end of the deck plate 2 by a horizontal piece 9a so as to close the upper surface of the valley 2a at the end of the deck plate 2. (See Figure 7).

The electromagnetic wave shielding liners 8 and 9 are completely embedded in the concrete 3 except for the upper end portion of the vertical piece 9b of the electromagnetic wave shielding liner 9.

On the other hand, the wall body is constructed by building a wall base panel 10 on the side of a frame made of a lightweight frame, and a copper plate, copper foil, or An electromagnetic wave shield plate 11 made of a metal plate having excellent conductivity such as a zinc-iron plate is attached, and the lower end portion of the electromagnetic wave shield plate 11 is electrically joined by soldering to the rising portion 9a of the electromagnetic wave shield liner 9. Has been done.

With such a configuration, the electromagnetic shield at the rising portion of the wall is perfected, and harmful electromagnetic waves that try to pass through this portion can be completely shielded.

8, 9, 10, 11, and 12 show another embodiment of the present invention, in which the deck plate 2 has an I-shaped (see FIG. 10) or L-shaped (see FIG. 11) cross section. A shaped deck plate is used, and in such a case, the end of the deck plate 2 is flatly crushed and installed on the steel beam 1, and it is more effective by interposing the braided wire 4. Yes (see Figure 12).

[0024]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects.

Since a deck plate having excellent electromagnetic wave shielding performance is used as the formwork for the floor slab, it is economical because it does not require a new shield plate to be attached to the floor surface.

Also, anchor bolts for fixing a large computer or OA equipment can be securely fixed to the concrete frame of the floor slab, and the anchor bolts can be attached without penetrating the deck plate on the lower surface of the slab.

Further, for example, the shield treatment of the anchor bolt for interposing the braided wire between the lower surface of the floor slab and the angle member is not required (see FIG. 13).

The electromagnetic wave shield liner is attached to the end of the deck plate so as to close the end face of the valley of the deck plate, and the electromagnetic wave shielding filling material is filled in the valley inside the line so that the electromagnetic wave at the end of the deck plate is filled. Since the shield can be reliably performed, it is possible to construct a floor slab that makes use of the excellent electromagnetic wave shielding performance of the deck plate.

Further, at the wall rising portion, an electromagnetic wave shield plate is attached to the inside of the wall body, and an electromagnetic wave shield liner is welded to both the deck plate and the electromagnetic wave shield plate between the electromagnetic wave shield plate and the deck plate. Alternatively, by soldering and mounting, it is possible to reliably perform electromagnetic wave shielding in this portion.

[0030]

[Brief description of drawings]

FIG. 1 is a sectional view of a floor slab having an electromagnetic wave shield structure using a deck plate according to an embodiment of the present invention.

FIG. 2 is a perspective view of a deck plate in FIG.

FIG. 3 is a cross-sectional view of a floor slab having an electromagnetic wave shield structure.

FIG. 4 is a plan view of a floor slab having an electromagnetic wave shield structure in FIG.

FIG. 5 is a cross-sectional view of a floor slab having an electromagnetic wave shield structure showing an electromagnetic wave shield structure of a wall rising portion.

6 is a partial perspective view of a floor slab having an electromagnetic wave shield structure in FIG.

FIG. 7 is a partial perspective view of the deck freight in FIG.

FIG. 8 is a cross-sectional view of a floor slab of an electromagnetic wave shield structure showing an electromagnetic wave shield structure of a wall rising portion.

9 is a partial plan view of a floor slab having an electromagnetic wave shield structure in FIG.

10 is a sectional view taken along line aa in FIG.

11 is a sectional view taken along the line aa in FIG.

12 is a sectional view taken along line bb in FIG.

FIG. 13 is a cross-sectional view of a conventional example in which an anchor bolt is shielded.

[Explanation of symbols]

1 ... steel beam, 2 ... deck plate, 3 ... concrete,
4 ... Braided wire, 5 ... Electromagnetic wave shielding liner, 6 ... Electromagnetic wave shielding filler, 7 ... Receiving part, 8, 9 ... Electromagnetic wave shielding liner, 10 ...
Wall base panel, 11 ... Electromagnetic wave shield plate, 12 ... Anchor bolt, 13 ... Angle material.

Claims (2)

[Scope of utility model registration request] 1. An electromagnetic wave shield structure for a floor slab constructed by placing concrete on a deck plate, the electromagnetic wave shield liner closing the valley plate end face of the deck plate at the end of the deck plate. An electromagnetic wave shield structure for a floor slab, characterized in that the electromagnetic wave shielding filler is filled in the inside of the roof and the inside of it is filled. 2. An electromagnetic wave shield structure for a floor slab constructed by placing concrete on a deck plate, the electromagnetic wave shield liner closing the valley plate end face of the deck plate at the end part thereof. Is attached, the valley portion inside is filled with an electromagnetic wave shielding filler, and an electromagnetic wave shield plate is attached inside the wall body, and an electromagnetic wave shield liner is provided between the electromagnetic wave shield plate and the deck plate. An electromagnetic wave shield structure for a floor slab, which is attached to both of the plates by welding or soldering.