JPH0533405A - Magnetic shielding floor for roof floor - Google Patents

Abstract

PURPOSE:To prevent the influence of a magnetic field generated by high-tension transmission lines. CONSTITUTION:A magnetic shielding floor is composed of a lower concrete 2 deposited on the roof floor of a building, a waterproof layer 3 successively laminated on the lower concrete 2, a thermal insulating layer 4, first and the second magnetic shielding members 5, 6 and an upper concrete 7. The first and the second magnetic shielding members 5, 6 are severally arranged so as to mutually form a clearance between them, and the first magnetic shielding member 5 is made to adhere onto the thermal insulating layer 4. The second magnetic shielding member 6 is arranged on a clearance (t) between the first magnetic shielding members 5. The only one side of the first magnetic shielding member 5 is made to adhere, and its other side is provided with a loosely moving part 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof magnetic shield floor for preventing the influence of a magnetic field generated by a high voltage power transmission line in a building constructed near the high voltage power transmission line.

[0002]

2. Description of the Related Art In a building constructed near a high-voltage power transmission line, a magnetic field generated by a current flowing through the high-voltage power transmission line affects electronic devices used in the building, resulting in a CRT such as a personal computer or a terminal device. Image distortion, color misregistration, etc. occur. In particular, in the medical field and the physical measurement field, when detecting a weak magnetic field from a living body or when performing high-performance measurement, the measurement itself becomes impossible. Conventionally, in order to solve this problem, a magnetic shield room using a steel plate made of a ferromagnetic material such as an electromagnetic steel plate or a silicon steel plate has been provided in a necessary place in a building in small room units.

[0003]

However, the conventional method using the magnetically shielded room cannot prevent the influence of the magnetism of the entire building. Therefore, it is conceivable to magnetically shield the whole or a part of the building, but the magnetic shielding of the roof of the building immediately below or in the vicinity of the high voltage power transmission line becomes a problem. On the rooftop, the temperature rises sharply,
This is because there is a problem of electrical connection of the magnetic shielding material and a problem of adversely affecting the waterproof layer.

The present invention is intended to solve the above-mentioned problems, to secure the electrical connection of the magnetic shielding material and to prevent the influence of the magnetic field generated by the high voltage transmission line without adversely affecting the waterproof layer. It is an object of the present invention to provide a rooftop magnetically shielded floor that can be manufactured.

[0005]

To this end, the roof magnetic shield floor of the present invention comprises a lower concrete 2 that is cast on the roof of a building, a waterproof layer 3 that is sequentially laminated on the lower concrete 2, and heat insulation. Consisting of a layer 4, a first magnetic shield 5, a second magnetic shield 6 and an upper concrete 7, and the first and second magnetic shields 5 are arranged so as to form a gap t with each other, The first magnetic shield member 5 is attached to the heat insulating layer 4
The second magnetic shield 6 is adhered to the upper side, the second magnetic shield 6 is arranged on the gap portion t of the first magnetic shield 5, and only one side of the first magnetic shield 5 is adhered to the other first magnetic shield. It is characterized in that the floating portion 12 is formed on the magnetic shield 5 side. It should be noted that the numbers added to the above configurations are for comparison with the drawings for easy understanding, and the configurations of the present invention are not limited thereby.

[0006]

In the present invention, for example, as shown in FIG.
When the upper concrete 7 is placed on the first and second magnetic shielding members 5 and 6, the floating portion 12 of the second magnetic shielding member is pressed against the first magnetic shielding member 5, and the magnetic shielding members are separated from each other. It will be surely electrically connected. Moreover, even if the first and second magnetic shields thermally expand due to the temperature rise of the upper concrete 7, the gap t is formed between the adjacent magnetic shields 5 and 6, and the second magnetic shield is formed. Since the floating portion 12 is formed between the shielding material 6 and the first magnetic shielding material 5, the amount of thermal expansion can be absorbed and the heat insulating layer 4 can be absorbed.
And the waterproof layer 3 is not adversely affected.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a magnetic shielding floor for a roof of the present invention, FIG. A is a sectional view of the magnetic shielding floor, FIG. B is a perspective view showing an arrangement example of the magnetic shielding material, and FIG. C is adhesion of the magnetic shielding material. It is an expanded sectional view for explaining a method.

In FIG. A, a rooftop magnetic shield floor 1A of this embodiment comprises a waterproof layer 3 made of asphalt, a heat insulating layer 4 made of expanded polystyrene, on a lower concrete 2 placed on the roof of a building. The first magnetic shielding material 5 and the second magnetic shielding material 6 are laminated in this order, and the upper concrete 7 is placed on the first and second magnetic shielding materials 5 and 6 to form a structure. There is. In addition, 8 shows the expansion and contraction joint which consists of expanded polystyrene, and 9 has shown the drainage ditch.

FIG. B is a perspective view showing an arrangement example of the first and second magnetic shielding members 5 and 6. The first magnetic shielding material 5 is, for example, a rectangular single or multi-layered silicon steel plate having a thickness of 0.35 mm and a length and width of 600 × 900 mm, and the second magnetic shielding material 6 has a thickness of 0.35 mm, for example. It is a strip-shaped single or multi-layered silicon steel sheet having a width of 100 mm. Then, as also shown in FIG. C, the first magnetic shields 5 are arranged on the heat insulating layer 4 so as to form a gap t of about 20 mm, and the four peripheral surfaces of the magnetic shield 5 are bonded to each other with the adhesive 10. It adheres to the heat insulating layer 4. Next, the strip-shaped second magnetic shielding material 6 is attached to the adjacent first magnetic shielding material 6.
The magnetic shield 5 is fixed on the gap t. The second magnetic shield 6 is also formed with a gap t therebetween. At this time, the second magnetic shielding material 6 is adhered only on one side of the first magnetic shielding material 5 with the adhesive material 11, and the other side of the first magnetic shielding material 5 is not fixed with the adhesive material, and the floating portion is not moved. 12 is formed. In addition, as an example of an adhesive material for a single or multi-layer silicon steel sheet, Celbest Gamma 2000
(Nippon Hoechst Synthetic Co., Ltd.) was used.

The operation of the present invention having the above structure will be described. When the upper concrete 7 is placed on the first and second magnetic shielding members 5 and 6, the floating portion 12 of the second magnetic shielding member is pressed against the first magnetic shielding member 5, and the magnetic shielding members are separated from each other. It will be surely electrically connected. Moreover, even if the first and second magnetic shields are thermally expanded due to the temperature rise of the upper concrete 7, the gap t is formed between the adjacent magnetic shields 5 and 6, and
Between the magnetic shielding material 6 and the first magnetic shielding material 5 of the floating portion 1
Since 2 is formed, the amount of thermal expansion can be absorbed, and the heat insulating layer 4 and the waterproof layer 3 are not adversely affected.

2A and 2B show another embodiment of the rooftop magnetic shield floor of the present invention. FIG. A is a sectional view of the magnetic shield floor, and FIG. B is a perspective view showing an arrangement example of magnetic shield materials. The same components as those in the embodiment of FIG. 1 are designated by the same reference numerals and the description thereof will be omitted.

The roof magnetic shield floor 1B of this embodiment is the second
The magnetic shield 6 of the same shape as the first magnetic shield 5, and the first magnetic shield 5 is placed on the heat insulating layer 4 at a distance of 20 m from each other.
The magnetic shields 5 are arranged so as to form a gap t of about m.
The four peripheral surfaces of are fixed to the heat insulating layer 4 with the adhesive 10. Next, the second magnetic shield material 6 is fixed on the gap portion t of the adjacent first magnetic shield material 5. The second magnetic shield 6 is also formed with a gap t therebetween. At this time, as in the embodiment of FIG. 1, the second magnetic shield 6 is adhered only to the one first magnetic shield 5 side by the adhesive and the other first magnetic shield 5 is adhered.
The magnetic shielding member 5 side is not fixed with an adhesive so that a floating portion is formed. In this embodiment, the magnetic shield member 5,
Since 6 is formed in a two-layer state over almost the entire surface, the magnetic shielding effect is correspondingly increased.

FIG. 3 is a plan view for explaining an application example of the present invention, showing a case where there is a high voltage power transmission line 14 above a building 13, and a rooftop 15 near the high voltage power transmission line 14 has a magnetic shielding effect. The magnetic shield floor 1B shown in FIG. 2 is installed on the rooftop 16 away from the high-voltage power transmission line 14 and the magnetic shield floor 1B shown in FIG.
The cost can be reduced by constructing in. The applicable range of the magnetic shield floors 1A and 1B is determined by simulation.

[0014]

As is apparent from the above description, according to the present invention, a lower concrete that is placed on the roof of a building, and a waterproof layer that is sequentially laminated on the lower concrete,
The heat insulating layer, the first magnetic shielding material, the second magnetic shielding material, and the upper concrete are arranged, and the first and second magnetic shielding materials are arranged so as to form a gap between each other. Gluing a magnetic shielding member on the heat insulating layer,
The second magnetic shield member is arranged on the gap of the first magnetic shield member, only one first magnetic shield member side is bonded, and the other first magnetic shield member side is a floating part. Since it is configured to form, the electric connection of the magnetic shielding material is ensured, the waterproof layer is not adversely affected, and the influence of the magnetic field generated by the high voltage power transmission line can be prevented.

[Brief description of drawings]

FIG. 1 shows an embodiment of a magnetic shield floor for a roof according to the present invention,
FIG. A is a sectional view of a magnetic shielding floor, FIG. B is a perspective view showing an arrangement example of a magnetic shielding material, and FIG. C is an enlarged sectional view for explaining a method of adhering a magnetic shielding material.

FIG. 2 shows another embodiment of the magnetic shielding floor for the roof of the present invention, FIG. A is a sectional view of the magnetic shielding floor, and FIG. B is a perspective view showing an arrangement example of the magnetic shielding material.

FIG. 3 is a plan view for explaining an application example of the present invention.

[Explanation of symbols]

1A, 1B ... Rooftop magnetic shield floor, 2 ... Lower concrete, 3 ... Waterproof layer 4 ... Thermal insulation layer, 5 ... First magnetic shield material, 6 ... Second magnetic shield material 7 ... Upper concrete, 10, 11 ... Adhesive, 12 ... Floating part, t ... Gap part

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masatake Nakamura             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation

Claims (3)

[Claims] 1. A lower concrete that is cast on the roof of a building, and a waterproof layer, a heat insulating layer, a first magnetic shielding material, a second magnetic shielding material and an upper concrete that are sequentially laminated on the lower concrete. And the first and second magnetic shielding members are arranged so as to form a gap between them, and the first magnetic shielding member is bonded onto the heat insulating layer, and the second magnetic shielding member is formed. Is disposed on the gap portion of the first magnetic shield member, only one first magnetic shield material side is bonded, and the floating portion is formed on the other first magnetic shield material side. A magnetic shield floor for rooftops. 2. The first magnetic shield member is a rectangular single or multiple layer magnetic shield material, and the second magnetic shield member is a strip single or multiple layer magnetic shield material. The magnetic shield floor for a roof according to claim 1. 3. The rooftop magnetic shield floor according to claim 1, wherein the first and second magnetic shield members are rectangular single or multilayer magnetic shield materials.