JP2002293664A - Alc panel having curved surface and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ALC panel having the curved surfaces whose front and rear surfaces are curved and which is made lightweight and has uniform strength on the whole. SOLUTION: This ALC panel 1 having the curved surfaces has such a structure that curved reinforcing bars 2 consisting of a plurality of horizontal bars 3 and a plurality of vertical bars 4 are buried almost in the central part of the panel 1 so that both sides of the panel 1 can be formed to have almost curved lines respectively and each of the front surface 1a and the rear surface 1b has the prescribed curvature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight lightweight cellular concrete panel (hereinafter simply referred to as a "curved ALC panel") used for an outer wall or a partition wall having a curved outer surface, and a method of manufacturing the curved ALC panel. The present invention relates to a curved ALC panel in which a curved reinforcing bar formed in a curved shape is buried, and front and back surfaces of which are each formed in a curved shape, and a method of manufacturing a curved ALC panel for producing the curved ALC panel by cutting. It is.

[0002]

2. Description of the Related Art Conventionally, a curved panel made of precast concrete or a GRC curved panel manufactured by mixing glass fiber into a cement mortar is provided in a formwork which has been previously processed into a predetermined curved shape. After the reinforcing material is installed, the cement mortar is poured into the formwork, cured, and then removed from the mold to produce a curved panel.

On the other hand, when manufacturing a general ALC panel, a large tank is used to form a large ALC lump in a semi-finished state in a tank, and then the ALC lump is formed into a piano wire. It was cut into a predetermined thickness by using and cured, and a large number of flat ALC panels were efficiently manufactured.

[0004] Further, in the case of ALC products, one of the front and rear surfaces of a thick corner block is cut and processed like a thick ALC corner block used for a curved corner of a building. Blocks having an R (an L-shaped corner formed on a convex curved surface with respect to the outside) or an inner R (an L-shaped corner formed with a concave curved surface with respect to the inside) are also partially manufactured. It had been.

Further, for example, Japanese Patent Application Laid-Open No. 63-89304
As disclosed in Japanese Patent Application Laid-Open Publication No. 18885443 (Japanese Patent No. 1885443), a semicircular or quarter installed in an ALC production form as described in a method for producing an ALC corner plate having a curved outer surface.
Inject the ALC raw material slurry into the entire surface of the circular square mold,
A technique of producing a thick block-shaped ALC corner plate having an outer surface having a curved surface shape, which is cured by autoclaving and curing after anti-curing is also known.

In addition, as in the technique of the curved wall construction panel disclosed in Japanese Patent Application Laid-Open No. 7-119239, a plurality of parallel cuts reaching the core material from both sides of the flat panel of ALC are made, and There is also known a technique of a curved ALC panel formed in a groove having a V-shaped cross section using a notch and by bending the entire flat panel to form a curved surface.

[0007]

As shown in the above-mentioned prior art, there has been a thick ALC corner block in which the outer surface or the inner surface is formed in an R-shape. As described above, a thin curved ALC panel is provided with a plurality of cut grooves which reach the core material from both sides of the ALC flat panel as described above, and the entire ALC flat panel is bent using these cut grooves to form a curved surface. Only a curved ALC panel formed in a shape was generally known.

Although the ALC corner block manufactured by cutting one of the front and back surfaces as described above can be used for a curved corner portion of a building or the like, the entire wall surface of the building can be widely used. There is a problem that it is difficult to use it when it is formed on a curved surface.

Also, a curved ALC panel manufactured by bending an ALC flat panel using a large number of cut grooves cannot be easily mass-produced, and a product having a curved surface having the same radius of curvature is always stable. It is difficult to manufacture in a state where it has been broken, and since many slits are provided on the front and back of the ALC flat panel, the strength of the product is weak, and it is difficult to construct at the construction site. was there.

In view of the above-mentioned conventional problems, a curved ALC panel is replaced with a precast curved concrete panel or GR.
As in the case of the C-curved panel, it is conceivable to use a mold having a curved surface on the inner peripheral surface and inject the ALC raw material slurry into the mold to produce the mold. The curved ALC panel has to be manufactured using a special formwork and takes a long time, so that there is a problem that the cost is extremely high, unlike the case of mass-producing the above-mentioned flat ALC panel.

Further, using the same method as that for manufacturing the above-mentioned general flat ALC panel, a rectangular AL having a relatively large thickness is used.
By manufacturing a C block in advance, using the ALC block as an intermediate molded block body, and cutting the front and back surfaces of the ALC block, respectively, to manufacture a thin ALC panel having a curved surface on the front and back surfaces. Is also conceivable.

However, as described above, when a relatively thick rectangular ALC block is manufactured in advance and the front and back surfaces thereof are cut to manufacture a thin ALC panel, first, a concrete molded product is manufactured. There is a problem as to whether it is possible to cut almost completely the front and back surfaces of an ALC block, which is a kind, in terms of strength or mass production.

That is, the ALC block used when forming the curved ALC panel is, for example, shown in FIGS. 7A and 7B.
As shown in FIG. 1, a rectangular ALC block 51 obtained by cutting a large block-shaped lightweight cellular concrete before autoclaving to a predetermined size through a piano wire or the like is generally used. In the ALC block 51, FIG.
As shown in (b), a reinforcing bar having a U-shaped cross section (hereinafter referred to as a U-shaped bar) 54 in which a plurality of linear vertical bars 52 and a U-shaped horizontal bar 53 are cross-welded is embedded. .

Further, A shown in FIGS. 7A and 7B described above.
In addition to the LC block 51, as shown in FIG. 8A, for example, as shown in FIG.
6. As shown in FIG. 8 (b), zigzag folded horizontal streaks 5
7, a zigzag reinforcing bar (hereinafter referred to as a zigzag bar) 58, and as shown in FIG.
Reinforcing bars (hereinafter referred to as S bars) 60 using 9 in one step,
As shown in FIG. 8D, ALC blocks 51a, 51b, 51c, and 5c in which reinforcing bars (hereinafter referred to as W bars) 62 and the like using linear horizontal streaks in two steps are embedded in the ALC blocks.
1d is also used.

However, the aforementioned ALC blocks 51, 51
As shown in a, 51b, 51c, and 51d, among the reinforcing bars embedded in the ALC block, a U-shaped bar 54 and a C-shaped bar 5
6. When the zigzag streaks 58 and the W streaks 61 are used,
For example, as shown in FIG. 9A, since reinforcement bars are arranged and reinforced to the vicinity of both corners A of the ALC block 51, it is difficult to perform a large cutting process on the periphery of both corners A. For example, as shown in FIG. 10, an ALC concrete panel R having a gentle curved surface on both sides.
There is a problem that it is difficult to form P.

On the other hand, as shown in FIG. 9B, in the ALC block 51c manufactured by embedding the S streaks 60, the S streaks 60 are reinforced so as to be separated from the peripheral portions of both corners A. Therefore, it is possible to process both corners A to some extent, but on the other hand, since the S streak 60 is buried away from the surface of the ALC block 51c, there is a problem that it is weak and easily cracked by the force in the direction of the arrow. is there.

The curved ALC panel and the method of manufacturing the same according to the present invention are a completely new technique developed in view of the above-mentioned many problems, and in particular, a curved reinforcing bar having a specific shape is embedded in the center of the ALC block. It is an object of the present invention to provide a completely new curved ALC panel in which both the front and back surfaces are subjected to substantially entire curved surface cutting and uniform strength is imparted to the entire panel, and a method of manufacturing the same.

[0018]

A curved surface ALC according to the present invention.
The panel is a completely new technology which has fundamentally improved many of the above-mentioned conventional problems. The gist of the first invention is to provide a lightweight cellular concrete panel in which both sides are substantially enclosed within the lightweight cellular concrete panel. A curved ALC panel characterized in that a curved reinforcing bar formed in a curved shape is buried in a substantially central portion, and both front and back surfaces thereof are each formed of a curved surface having a predetermined radius of curvature. .

In the curved ALC panel according to the first aspect of the present invention, since the bending reinforcing bars formed by curving both sides in a substantially curved shape are buried substantially in the center, the overall strength of the curved ALC panel is made uniform. Can be enhanced.

Since the front and back surfaces of the panel each have a curved surface having a predetermined radius of curvature, the thickness of the entire panel can be made thin and lightweight. It is possible to easily and inexpensively construct a curved wall of a building having a variety of designs.

The gist of the second invention of the curved ALC panel according to the present invention is that the curved ALC panel is structured such that a flat portion is interposed in a part of a curved surface portion on both front and back surfaces of the curved ALC panel. Is a curved ALC panel.

In the above-mentioned curved ALC panel according to the second aspect of the present invention, a flat portion is interposed in a part of the curved surface formed on the front and back surfaces of the ALC panel. A variety of designs can be provided by the curved walls of the building.

In particular, when a flat portion is provided at the end of the curved ALC panel, continuity with a horizontally continuous flat wall surface is not impaired at a corner of a building such as an entrance corner. Therefore, there is a sense of unity, and since the back surface is in contact with the base material for panel mounting, it has effects such as workability, mounting strength, and ease of base installation.

[0024] The gist of the first invention of the method for manufacturing a curved ALC panel according to the present invention is to provide a lightweight cellular concrete block in which a bending reinforcing bar formed by curving both sides in a substantially curved shape is buried substantially in the center. A method of manufacturing a curved ALC panel, characterized in that a back surface is cut and formed into a curved surface having a predetermined radius of curvature.

According to a first aspect of the above-mentioned method of manufacturing a curved ALC panel according to the present invention, a lightweight cellular concrete in which a bending reinforcing bar formed by bending both sides into a substantially curved surface is buried substantially in the center. Since the front and back surfaces of the block are respectively cut, the front and back surfaces of the ALC panel are relatively deeply cut into a shape substantially in line with the bending reinforcing bars buried in the center in advance, and the front and back surfaces have a predetermined radius of curvature. Can be manufactured in a stable state.

The gist of the second invention of the method for manufacturing a curved ALC panel according to the present invention is characterized in that the light-weight cellular concrete block is manufactured by cutting both end surfaces thereof to form predetermined inclined surfaces. It is a manufacturing method of the curved ALC panel of the third invention.

In the method for manufacturing a curved ALC panel according to the second aspect of the present invention, since both end faces of the curved ALC panel manufactured according to the first aspect of the invention are cut into predetermined inclined surfaces, respectively, a plurality of pieces are formed. In the case where the curved panels are arranged in parallel on the wall surface, the end faces of both curved ALC panels can be brought into close contact with each other.

[0028]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a curved ALC according to the present invention.
One embodiment of a panel and a method of manufacturing the same will be described in detail. FIGS. 1A and 1B each show a curved ALC according to the present invention.
FIG. 2 is an explanatory view of a panel, and FIG. 2 is a curved surface AL of FIGS.
ALC blocks used to manufacture C panels,
FIG. 3 is an explanatory sectional view showing a cut portion of the ALC block of FIG.

FIGS. 4 (a) and 4 (b) are explanatory diagrams showing a state of cutting the ALC block of FIG. 2, and FIGS. 5 (a) and 5 (b) are explanatory diagrams of a curved ALC panel of another example, and FIG. a),
(B), (c) is sectional explanatory drawing of the curved-surface ALC panel which interposed the flat part in a part of each curved surface.

1 (a) and 1 (b), reference numeral 1 denotes a curved ALC panel according to the present invention, and both sides of the curved ALC panel 1 are substantially curved in a substantially central portion thereof. The formed bending reinforcement 2 is buried.

The bending reinforcing bar 2 includes a plurality of horizontal bars (main bars) 3 curved in an arc shape and a plurality of straight vertical bars (secondary bars).
4 and are welded so as to cross each other.

The surface 1a of the curved ALC panel 1
And the back surface 1b are each formed of a curved surface having a predetermined radius of curvature. The thickness of this curved ALC panel 1 is 25 mm
It has the above thickness, and its length and width have arbitrary dimensions.

The curved surface AL shown in FIGS. 1A and 1B described above.
The C panel 1 is manufactured by processing a rectangular ALC block 5 as shown in FIGS. 2 (a) and 2 (b). The ALC block 5 is an intermediate molded block before the curved ALC panel 1 is cut, and has the above-described bending reinforcing bar 2 buried in the center thereof in advance.

As described above, the ALC block 5 is constructed by embedding the bending reinforcing bar 2 in the center of the inside thereof, as shown in FIG. 3, for example, as shown in FIG.
Since no bending reinforcing bars 2 are arranged near the upper two corner portions A, the both corner portions A can be largely cut. Also, as shown in FIG.
Since the bending reinforcement 2 is not provided at the lower central portion B of the C block 5, the lower central portion B can also be largely cut.

In the center of the ALC block 5, the bending reinforcement 2 having the above-described configuration is arranged in advance, so that the ALC
A uniform strength can be given to the entire block 5.
Therefore, as shown in FIGS. 4 (a) and 4 (b), even when the ALC block 5 is supported in any of the forward and reverse directions via the support 6 such as a conveyor and tension is applied, the ALC block 5 is hard to crack and maintains a large strength. I can do it.

That is, as shown in FIG. 4 (a), when the ALC block 5 is placed on the support 6 in a formal direction and tension is applied from above the ALC block 5 in the direction of the arrow, the arch effect is also obtained. Can disperse the power throughout, and A
The LC block 5 is hardly broken. Therefore, ALC
Cutting of the upper part of the block 5 is facilitated.

Also, as shown in FIG. 4B, when the ALC block 5 is mounted on the support 6 with the ALC block 5 reversed,
When tension is applied from above the LC block 5 in the direction of the arrow, the force can be dispersed in the left-right direction by the reverse arch effect, making the ALC block 5 difficult to break, and cutting the lower part of the ALC block 5 Is easy.

Next, a specific example of manufacturing the curved ALC panel 1 by cutting the ALC block 5 will be described. In the cutting process, after first cutting both end portions of the ALC block 5, a portion to be a small face of the curved ALC panel 1 is cut by 45 °. Then, while moving the ALC block 5 via a conveyor or the like,
The upper corners A (see FIG. 3) of the LC block 5 are largely cut by rotating separate cutters and following the R guide to form an arcuate curved surface.

Next, after the ALC block 5 is inverted and supported by the support 6 [see FIG. 4B], the lower central portion B (see FIG. 3) is rotated by rotating three blades. The ALC block 5 is moved by the conveyor, and the center portion B is cut deeply to form an arc-shaped curved surface in this portion, whereby the curved ALC panel 1 can be completed.

The curved ALC panel 1 manufactured in this way has a thickness of about 25 mm or more, and both front and back surfaces 1a and 1b have the same shape, that is, the same curvature, one having a radius of about 300 mm and the other having a general radius of about 300 mm. Quarter of about 250mm
It is formed by a circle. It is not necessary to limit this arc to a quarter circle, but the central angle is 18 due to the structure of the building.
It is preferable that the angle is 0 degrees or less, that is, the arc is 1/2 or less.

5A and 5B, reference numeral 7 denotes a curved ALC panel according to another embodiment.
Design grooves 8 are formed vertically and horizontally on the entire surface 7a of the panel 7 to form a beautiful joint pattern. At the center of the curved ALC panel 7 is embedded a bending reinforcing bar 10 which is formed by zigzag folding the main bar 9 and bending both sides in a substantially curved shape.

In FIGS. 6A, 6B and 6C, 1
Reference numerals 1, 12, and 13 denote curved ALC panels according to other embodiments, respectively.
In the case of No. 3, a flat part is interposed in a part of the curved surface formed on the front and back surfaces. For this purpose, the curved reinforcing bars 2a, 2b, 2c embedded in these curved ALC panels 11, 12, 13 are also provided with linear portions at predetermined positions.

The curved ALC panel 11 is configured such that a plane portion is continuously provided only at the right end of the curved ALC panel 11. The curved ALC panel 12 is configured such that flat portions are continuously provided at both left and right ends of the curved ALC panel 12. Curved ALC panel 13
In this case, the curved ALC panel 13 is configured such that a flat portion is interposed substantially at the center thereof.

[0044]

According to the curved ALC panel of the present invention, since the curved reinforcing bars formed by curving both sides in a substantially curved shape are buried substantially in the center, the overall strength of the curved ALC panel is uniformly increased. It has the effect that can be. Also,
Since the front and back surfaces of the panel each have a curved surface with a predetermined radius of curvature, the thickness of the entire panel can be made thin and lightweight, and by using these in combination,
It also has a great effect, such as being able to easily and inexpensively configure a curved wall of a building having various designs.

When a flat part is interposed in a part of the curved surface formed on the front and back surfaces of the ALC panel, the use of this curved ALC panel allows the design to be more varied due to the curved wall of the building. Has an effect that can be given. In particular, when a flat portion is provided at the end of the curved ALC panel, the continuity with a horizontally continuous flat wall surface is not impaired at a corner of a building such as an entrance corner or the like. There is a bodily sensation, and since the back surface is in contact with the base material for panel mounting, effects such as workability, mounting strength, and ease of base installation can be obtained.

In the above-described method for manufacturing a curved ALC panel according to the present invention, the front and back surfaces of the lightweight cellular concrete block in which bending reinforcing bars formed by bending both sides in a substantially curved shape are buried substantially in the center. Respectively, so that the front and back surfaces of the ALC panel are relatively deeply cut into a shape substantially along the curved reinforcing bars buried beforehand in the center portion, and the front and back surfaces have curved surfaces having a predetermined radius of curvature. Can be manufactured in a stable state.

Further, the curved surface AL manufactured as described above
In the case where both end surfaces of the C panel are cut into predetermined inclined surfaces, respectively, when a plurality of curved surface panels are arranged in parallel on a wall surface using the inclined surfaces, the end surfaces of both curved ALC panels are cut. It has the effect that it can be used in close contact with each other.

[Brief description of the drawings]

FIGS. 1A and 1B are each a curved surface A according to the present invention.
It is explanatory drawing of an LC panel.

FIG. 2 is an ALC block used for manufacturing the curved ALC panel of FIGS. 1 (a) and 1 (b).

FIG. 3 is an explanatory sectional view showing a cut portion of the ALC block in FIG. 2;

FIGS. 4A and 4B are explanatory views showing a state where the ALC block shown in FIG. 2 is cut.

FIGS. 5A and 5B are explanatory views of a curved ALC panel of another example.

FIGS. 6A, 6B, and 6C are cross-sectional explanatory views of a curved ALC panel in which a flat portion is interposed in part of a curved surface.

FIGS. 7A and 7B are explanatory diagrams of a conventional ALC block. FIG.

8 (a), 8 (b), 8 (c), and 8 (d) are cross-sectional views of other conventional ALC blocks.

FIGS. 9 (a) and 9 (b) are cross-sectional explanatory views of a state in which another conventional ALC block is processed.

FIG. 10 is a perspective view of a curved ALC panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... ALC block 1a ... Front surface 1b ... Back surface of 1 2 ... Bending reinforcing bar 2a ... Bending reinforcing bar 2b ... Bending reinforcing bar 2c ... Bending reinforcing bar 3 ... A plurality of horizontal bars (main bars) curved in an arc shape ... A plurality of linear longitudinal bars (secondary bars) 5 ... ALC blocks 6 ... Supports 7 ... Curved ALC panels 7a ... 7 Surfaces 8 ... Design grooves 9 ... Main bars 10 ... Bending reinforcements 11 ... Curved ALC panels 12 ... Curved surfaces ALC panel 13 ... curved ALC panel 51 ... ALC block 51a ... ALC block 51b ... ALC block 51c ... ALC block 51d ... ALC block 52 ... a plurality of linear vertical streaks 53 ... U-shaped transverse streaks 54 ... U-shaped cross section reinforcement Streak 55… C-shaped horizontal streak 56… C-shaped cross section reinforcement 57… Zigzag folded horizontal streak 58… Zigzag cross-section reinforcement 59… Line Reinforcement RP ... ALC concrete panel the lateral stripes 60 ... 59 Reinforcement 62 ... 59 the reinforcement 61 ... 59 used in the stage form was used in two-step form was used in two-step form

Claims (4)

[Claims] 1. A lightweight cellular concrete panel, comprising:
In the lightweight cellular concrete panel, bending reinforcing bars formed by curving both sides in a substantially curved shape are buried in a substantially central portion, and both the front and rear surfaces are each formed of a curved surface having a predetermined radius of curvature. A curved ALC panel characterized in that: 2. The curved ALC panel according to claim 1, wherein the curved ALC panel is configured such that a flat portion is interposed in a part of a curved surface portion on both front and back surfaces. 3. A lightweight aerated concrete block in which both sides are bent substantially in a curved shape is formed into a curved surface having a predetermined radius of curvature by cutting each of the front and back surfaces of a lightweight cellular concrete block buried substantially in the center. And manufacturing the curved ALC panel. 4. The method for manufacturing a curved ALC panel according to claim 3, wherein both ends of the lightweight cellular concrete block are cut and formed into predetermined inclined surfaces.