JPH09235811A - Form-cum-facing-plate and facing structure therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain a radio interference suppressing structure and simultaneously to dispense with any troublesome form operation as well as to enable it to secure the extent of higher facing strength. SOLUTION: A form-cum-facing plate 1 is used as a form at the time of concrete placing while after concrete hardening, it is used as a surface material as it is. In this constitution, the form-cum-facing plate 1 is provided with each of rising parts 5a and almost T-shaped sectional fixing part 5 consisting of flange parts 5b vertical to this rising part 5a at the concrete placed side of a forming base 1a. Next, each platelike ferrite 9 is installed in respective recess parts 7 formed among these fixing parts themselves, and simultaneously both edge parts of each ferrite 9 are held by each of the flange parts 5b. Then a concrete placed space 11 is formed in space between the flange part 5b and the ferrite 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork / exterior plate suitable for use in countermeasures against electromagnetic interference such as in a skyscraper and a building exterior structure using the same.

[0002]

2. Description of the Related Art A radio wave (for example, a television radio wave) reaches a reception point directly, and also reaches a reception point by reflection from a skyscraper or the like. If there is a considerable time difference between the two radio waves reaching the receiving point, a reception failure such as a ghost in which a double image appears on the screen occurs. For example, in the case of a ghost disturbance, the intensity of the reflected wave is generally 1/30 of the direct wave.
Obstacles will be less noticeable if you:

Such structures (especially skyscrapers, etc.)
In recent years, various measures have been taken in order to reduce the reflection of radio waves due to. For example, in the exterior structure of a building,
A magnetic material is placed on the outside of the mesh muscles, a mold is provided on the outside of the mesh muscles, these are integrally constructed by concrete casting, and the electromagnetic waves before being transmitted to the mesh muscles are absorbed by the magnetic material,
It is like reducing the interference by attenuating the reflected waves.

[0004]

However, in the above-mentioned exterior structure of the conventional example, between the mesh reinforcement and the formwork,
There has been a problem that the magnetic material has to be arranged at a predetermined position, the work of the formwork becomes extremely complicated, and much labor is required. In addition, since concrete is placed with the magnetic material embedded on the outside of the mesh streaks, it is difficult to place it in good condition, and the strength of the exterior surface part is reduced, which may cause problems such as peeling. . The present invention has been made in view of the above circumstances, and uses a form / combination plate that has a radio interference prevention structure, eliminates complicated form work, and can obtain high exterior strength, and the same. The purpose is to provide an exterior structure and improve workability and exterior strength.

[0005]

The construction of the formwork / exterior plate according to the present invention for achieving the above object is used as a formwork during concrete pouring and also as a surface material after the concrete is hardened. An exterior plate, in which a plurality of fixing portions each having a substantially T-shaped cross section, each of which has an upright portion and a flange portion perpendicular to the upright portion, are formed in parallel on the concrete pouring surface side of the molded substrate, and between the fixing portions. A plate-shaped ferrite is disposed in the recess formed by, and both edge portions of the ferrite are held by the left and right flange portions, and a concrete placing space is formed between the flange portion and the ferrite. It is a feature. Then, the formwork / exterior plate is formed with an inclined surface that separates from the ferrite with the surface of the flange portion facing the ferrite facing toward the tip, and thus has a substantially triangular cross section between the flange portion and the ferrite. The casting space can be formed. Further, in the structure of the exterior structure using the formwork / exterior plate according to the present invention, the brim portion of the fixing part is embedded in the cast concrete, and the formwork / exterior plate according to claim 1 or 2. It is characterized by being fixed to the cast concrete.

In the formwork / exterior plate, a fixing portion is formed on the concrete casting surface side of the molded substrate to form a ferrite accommodating space, and at the same time, the fixing portion serves as a reinforcing rib, so that It also increases strength. Further, by embedding the fixing portion in concrete, it is possible to securely fix the fixing portion to the concrete. By forming an inclined surface in the flange and forming a casting space having a substantially triangular cross section with the ferrite, it is possible to hold the ferrite and fix the form and exterior plate at the same time. According to the exterior structure using the formwork / exterior plate according to the present invention, the formwork / exterior plate is used as the formwork, and is used as the surface material of the building as it is after pouring the concrete. Eliminating construction work and dismantling work. Further, the complicated work of disposing the ferrite in the mold is eliminated.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of a form and exterior plate and an exterior structure using the same according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of a formwork / exterior plate according to the present invention, and FIG. 2 is an enlarged view of a fixing unit. The mold frame / exterior plate 1 forms the molded substrate 1a as, for example, a rectangular shaped plate having a predetermined vertical and horizontal lengths. A convex portion 3 or a concave portion (not shown) for connecting the mold / exterior plates 1 to each other in the plane direction is formed on both end surfaces of the molded substrate 1a.

On one surface of the molded substrate 1a, a protruding fixing portion 5 is formed over the entire length in the longitudinal direction, which is the longitudinal direction, for example. As shown in FIG. 2, the fixing unit 5 includes an upright portion 5a upright on the plate surface, and a flange portion 5b extending from both upper ends of the upright portion 5a in parallel with the plate surface. That is, the fixing unit 5
The cross-sectional shape is formed in a substantially T shape. The fixing portions 5 at both ends of the molded substrate 1a are formed in an inverted L shape, which is a half of the central portion.

A plurality of fixing portions 5 are provided in parallel with the vertical pieces of the molded substrate 1a. Therefore, between the fixing portions 5, the opening 7 is narrow due to the collar portion 5b and the groove bottom is wide.
Becomes A long plate-shaped magnetic material (ferrite or the like) 9 that is long in the vertical direction of the molded substrate 1a is fitted into each recess 7. The ferrite 9 is held in the recess 7 by pressing both edges in the longitudinal direction with the left and right flanges 5b. Note that the falling off of the ferrite 9 in the longitudinal direction is restricted by an adhesive, screws, or the like.

The flange portion 5b of the fixing portion 5 has a surface facing the ferrite 9 formed by an inclined surface 10 which is separated from the ferrite 9 toward the tip. Therefore, the collar portion 5b holds the ferrite 9 at the base portion, and forms the casting space 11 having a substantially triangular cross-section with the ferrite portion 9b.

The molded substrate 1a can be manufactured as an extrusion-molded cement plate which is extruded in a predetermined length from the die by pressure-feeding the cement kneading material to the die having such a sectional shape.

Next, the form and exterior plate 1 thus formed
The exterior structure of, for example, a pillar portion using will be described. FIG. 3 is a cross-sectional view of the exterior structure of the column portion using the form and exterior plate. On the outer periphery of the plurality of column main bars 13 arranged in the vertical direction,
A strap (hoop muscle) 15 is arranged. The hoop muscles 15 are arranged at predetermined intervals in the longitudinal direction of the main muscles 13. Further, the hoop streak 15 may have a strip plate shape in addition to the wire rod.

On the outer side of the hoop streak 15, the above-mentioned formwork / exterior plate 1 is arranged with a predetermined concrete placing space therebetween. The formwork / exterior plate 1 is formed in a shape corresponding to the pillar surface, and is connected by being fitted through the above-described convex portion 3 and concave portion 17. That is, the formwork / exterior plate 1 is assembled as a normal formwork that surrounds the inner reinforcing bars 13 and 15. The outside of the formwork / exterior plate 1 assembled in this manner is supported by a flap material (not shown) or the like.

Concrete 19 is placed inside the assembled formwork / exterior plate 1. The cast concrete 19 flows into the casting space 11 of the fixing unit 5 on the inner surface of the form / exterior plate 1 and burys the respective fixing units 5.
That is, the fixing portion 5 is integrated with the concrete 19 with high strength in a state where the collar portion 5b is embedded in the concrete 19.

A building having such an exterior structure (particularly,
In a skyscraper or the like), a radio wave that passes through the exterior and is reflected by the hoop muscle 15 is absorbed by the ferrite 9 immediately before the hoop muscle 15 and is not reflected as a reflected wave from the outer surface of the building. . This will reduce the multiple propagation of radio waves by the building.

Further, the ferrite 9 absorbs an electric wave which is about to be transmitted before the hoop muscle 15, and the ferrite 9
The back surface side also absorbs the reflected wave reflected by the hoop streak 15 after passing through the gap between them, and the reflected wave is surely absorbed.

As described above, according to the above-described formwork / exterior plate 1, since the plurality of fixing portions 5 are arranged in parallel on one surface,
It is possible to form the concave portion 7 that is the accommodation space for the ferrite 9, and the fixing portion 5 also functions as a reinforcing rib.
The strength of the formwork / exterior plate 1 can also be increased. And
An inclined surface 10 is formed on the collar portion 5b of the fixing portion 5, and a casting space 11 is formed between the flange 9 and the ferrite 9. Therefore, by placing concrete 19 in the casting space 11, the fixing portion 5 is fixed. It can be surely buried in the concrete 19 and the fixing strength can be enhanced. As a result, peeling of the surface can be reliably prevented.

Further, in the exterior structure using the formwork / exterior plate 1, the formwork / exterior plate 1 is used as a formwork, and after the concrete 19 is cast, it is used as it is as a building surface material without being removed. As a result, it is possible to eliminate the work of building and dismantling the formwork. Moreover, since the ferrite 9 is formed integrally with the frame / exterior plate 1, the complicated work of disposing the ferrite 9 in the conventional frame can be eliminated.

Although the formwork / exterior plate 1 is used for the exterior structure of the pillar portion in the above-mentioned embodiment, the formwork / exterior plate 1 can be formed by connecting a plurality of other things in the plane direction. Of course, it can also be used for the wall portion.

[0020]

As described in detail above, according to the formwork / exterior plate of the present invention, since the fixing portion is arranged in parallel on the concrete placing surface side of the molded substrate, the ferrite accommodating space is reduced. In addition to being able to be formed, the fixing portion serves as a reinforcing rib, and the strength of the form and exterior plate can also be increased.
Since the placing space is formed between the fixing portion and the ferrite, the fixing portion can be surely buried in the concrete, and the surface can be surely prevented from peeling off. By forming an inclined surface on the flange to form a casting space having a substantially triangular cross section with the ferrite, it is possible to hold the ferrite and fix the form / cumulative plate at the same time. According to the exterior structure using the formwork / exterior plate according to the present invention, the formwork / exterior plate can be used as a formwork and can be used as the surface material of the building as it is after placing concrete. It is possible to eliminate the assembling work and the disassembling work, and it is also possible to eliminate the complicated work of disposing the ferrite in the mold.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a form and exterior plate according to the present invention.

FIG. 2 is an enlarged view of a fixing unit.

FIG. 3 is a transverse cross-sectional view of an exterior structure of a column portion using a form and exterior plate.

[Explanation of symbols]

 1 Form Frame / Exterior Plate 1a Molded Substrate 5 Fixing Part 5a Standing Part 5b Collar Part 7 Recess 9 Ferrite 10 Inclined Surface 11 Casting Space

Claims (3)

[Claims] 1. A formwork / exterior plate which is used as a formwork during concrete pouring and is used as a surface material as it is after the concrete is hardened. The standing part is perpendicular to the standing part on the concrete pouring surface side of the molded substrate. A plurality of fixing portions each having a substantially T-shaped cross section, which is composed of a collar portion, are formed in parallel, and plate-shaped ferrite is arranged in the concave portion formed between the fixing portions, and both edge portions of the ferrite are formed on the left and right sides. A formwork / exterior plate, characterized in that it is held by the flange portion, and a concrete placing space is formed between the flange portion and the ferrite. 2. The casting space having a substantially triangular cross section between the collar portion and the ferrite by forming a surface of the collar portion facing the ferrite with an inclined surface facing away from the ferrite toward the tip. 2. The method according to claim 1, wherein
Form and exterior plate described. 3. A pillar or wall characterized in that the formwork / exterior plate according to claim 1 or 2 is fixed to the cast concrete by burying the collar portion of the fixing portion in the cast concrete. Exterior structure.