JP2000248670A - Alc panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ALC panel which has large proof stress against anchor pull-out and is not easily damaged. SOLUTION: There is provided an ALC panel 1 having an anchor 3 which is rigidly connected to a reinforcing bars 4 in the panel and embedded in the same. The anchor 3 is made up of a pair of wide flat plates 3a and fitting hardware 3c rigidly pinched between the same. The fitting hardware 3c is fixed to the widthwise central portion of each wide flat plate 3a, and the wide flat plate 3a has a height 2/5 to 4/5 times as long as the thickness of the panel, and is rigidly connected to at least the two reinforcing bars 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ALC panel in which an anchor for attaching the ALC panel to a structural frame of a building is embedded inside the ALC panel, and the anchor withdrawal strength is large.

[0002]

2. Description of the Related Art As shown in FIGS. 8 to 10, an anchor fitting is embedded in an ALC panel 1 (hereinafter, referred to as a panel 1) for attaching the panel 1 to a frame.
Various shapes of the anchor fitting have been proposed so far according to each purpose, but the anchor fitting 20 shown in FIG. 8 is employed from the viewpoint of increasing the pull-out resistance. L-shaped plate 2 forming this anchor 20
A long nut 20b is welded and fixed to the vertical piece 20aa of Oa, and the horizontal piece 20ab is tied to the main reinforcing bar 4 by welding or the like. This L-shaped plate 20a
Are used for the purpose of tightening the anchor fittings 20 across a plurality of reinforcing bars to improve the anchor pull-out resistance.

[0003]

However, as shown in FIGS. 9 and 10, when a large load P is applied to the panel 1 attached to the building frame by the anchor fitting 20, the following problem occurs. That is, as shown in FIG. 9, when the panel 1 is viewed from the side of the short side, the long nut 20b
When a large anchor pulling force F is applied to the panel 1, there is a problem that the L-shaped plate 20a is bent and deformed, and a crack 2 is generated in the panel 1. As shown in FIG. 10, when the panel 1 is viewed from the long edge side, the anchor pull-out force F is broken down into a force F1 for opening the vertical piece 20aa to the outside and a force F2 applied perpendicular to the main bar 4a. However, as shown in FIG. 11, a force F1 for opening the vertical piece 20aa outward deforms the vertical piece 20aa of the L-shaped plate 20a outward, so that a crack 2 is generated at a corner of the panel 1. There was a problem

Accordingly, an object of the present invention is to solve the above problems and to provide an ALC panel which has a large anchor pull-out resistance and is hardly damaged.

[0005]

According to the present invention, there is provided an ALC panel having an anchor buried tightly to a reinforcing bar inside the panel in order to solve the above-mentioned problem, wherein the anchor comprises a pair of wide flat plates and a pair of wide flat plates. The wide mounting plate is fixed to the center of the wide flat plate in the width direction, and the wide flat plate has a height of 2/5 to 4/5 of the panel thickness. The ALC panel was tied to more than one reinforcing bar.

The operation of the present invention will be described below. The anchor is composed of a pair of wide flat plates and a mounting fixture clamped and fixed thereto. Since this wide flat plate has a large area and a large in-plane bending rigidity, it is not easily deformed by an external force against the wide flat plate. In addition, the mounting bracket is sandwiched and fixed between a pair of wide flat plates, and the pull-out force to the anchor to which the panel and the building frame are tied is effectively transmitted directly to the wide flat plate. Be larger. Also, since the pull-out force applied to the mounting bracket is well-balanced by the pair of wide flat plates,
The anchor is less likely to deform and the panel is less likely to break.

Further, the wide flat plate has a thickness of 2%.
If the height is ５〜 to ４, the bending rigidity in the in-plane direction is increased, so that it is not easily deformed, and the anchor has a predetermined depth from the panel surface and is covered with the panel base material. It improves in terms of rust and fire protection performance. In addition, if a wide flat plate that is not easily deformed in the in-plane direction is tied to two or more reinforcing bars, the pulling force applied to the anchor is two.
It is distributed and transmitted in a well-balanced manner to more than one reinforcing bar. Then, the anchor pull-out force is transmitted to the entire panel through the reinforcing bar, and the resistance of the panel mother body is effectively drawn out to further improve the anchor pull-out resistance.

When the mounting bracket is fixed to the center of the wide flat plate in the width direction, the pulling force applied to the anchor is evenly distributed and supported on the entire wide flat plate. Further, since the wide planographic plate has a wide width, the wide planographic plate can be tightly strung over a plurality of main bars.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A description will be given based on FIG. In addition, the same code | symbol was attached | subjected to the code | symbol same as a prior art example. FIG. 1 is a perspective view showing one embodiment of an ALC panel 1 in which an anchor 3 is embedded, FIG. 2 is a perspective view of the anchor, FIG. 3 is a sectional view of the anchor, and FIG.
Is a front view of the anchor, and FIG. 5 is a cross-sectional view showing a state where the anchor is embedded in the panel.

As shown in FIGS. 1 to 4, an anchor 3 is provided between a pair of parallel wide plates 3a.
c is clamped at the center in the width direction of the wide flat plate 3a so that its internal thread is opened on the panel surface and fixed by the welded portion 3f. As shown in FIG. 5, the wide flat plate 3a of the anchor 3 is It is fixed to the reinforcing steel bar 4 by welding. The anchors 3 are buried one by one at the center of the panel 1 at the upper and lower portions in the width direction.

The height of the wide flat plate 3a is 2 of the thickness D of the panel 1.
/ 5 to 4/5. That is, if the heights H1 and H2 of the wide flat plate 3a are ２ or more of the thickness of the panel 1, the bending rigidity in the in-plane direction increases. If the heights H1 and H2 of the wide flat plate 3a are not more than 4/5 of the thickness of the panel 1, the anchor 3 will have a predetermined depth from the surface of the panel 1 and will be covered with the panel base material to prevent rust and fire. Etc. will be better. Furthermore, the heights H1 and H2 of the wide flat plate 3a are set to 2/5 to 7
With / 10, the material can be further reduced while maintaining the bending rigidity of the anchor 3.

As shown in FIG. 5, when the height H1 at the end of the wide flat plate 3a is lower than the height H2 at the central portion, the bending rigidity of the anchor 3 is maintained and the width of the wide flat plate 3a is reduced. Material savings are preferred. If the wide flat plate 3a is a steel plate having a thickness T of 3 mm or more, the strength as a rigid body increases, and the bending rigidity in the in-plane direction is further increased, which is preferable.

As shown in FIG. 5, when the width L of the wide flat plate 3a is equal to or more than 1/4 of the width W of the panel, the wide flat plate 3a is sufficiently tied over a large number of reinforcing bars 4 to increase the pulling force F. Can be borne by the reinforcing reinforcing bar 4, and as a result, the panel 1 having a larger pull-out strength can be obtained.

For example, each dimension of the panel 1 has a width of 60c.
m, length 200cm, thickness 20cm, diameter 7m
m reinforcing bars 4 are embedded vertically and horizontally (seven main bars 4a), the wide flat plate 3a of the anchor 3 has a thickness T = 4m.
m, height H1 at both ends = 9cm, height H2 at center = 13c
m, a wing-shaped steel plate having a lateral length L = 28 cm of the wide flat plate 3a can be used.

Further, as shown in FIGS. 1 to 4, leg pieces 3b are provided below the pair of wide flat plates 3a to extend and bend the respective flat plates so as to form an L-shape with the wide flat plates 3a. Each leg piece 3b has two main rebars 4
It is fixed by welding over a.

As shown in FIG. 7, when a load P is applied to the panel 1, the pull-out force F of the anchor 3 becomes a force parallel to the surface of the panel 1 (a force F1 for opening the wide flat plate to the outside) and the panel 1
(Force F perpendicular to main bar 4a)
Decomposed into 2). At this time, in the conventional example, FIG.
As shown in FIG. 1, the vertical piece 20aa of the anchor 20 is deformed to generate the cracked portion 2 of the panel 1, but in the present embodiment, as shown in FIG. The anchor 3 is hardly deformed and the panel 1 is less likely to be damaged because the 3a and the leg piece 3b are integrated by holding the mounting bracket 3c. At this time, the leg piece 3b is more preferable because it also acts to bear a part of the pulling force F on the base material of the panel 1 itself.

As shown in FIG. 2, a notch 3d is provided at the center of the wide flat plate 3a. As shown in FIGS. 3 and 6, a locking portion 3 e is screwed and welded and fixed to the mounting nut 3 c of the long nut by a fastening member 3 g (bolt). The attachment 3c is locked to the notch 3d of the flat plate 3a and fixed by welding so that the mounting bracket 3c does not come off the anchor 3 main body. These structures are more preferable because the attachment metal 3c is unlikely to be detached from the anchor 3 main body by the anchor pull-out force F. Further, through-holes may be provided on the wide flat plate 3a to such an extent that the bending rigidity does not decrease, so as to increase the adhesion strength with the raw slurry.

The mounting bracket 3c is not particularly limited, and may be a long nut, a bolt, a steel rod, or the like. Further, as shown in FIG. 1, when one anchor 3 is buried in the upper part and the lower part of the panel 1 at the center in the width direction, respectively, the panel 1
When the panel is fixed to the building structure, the panel 1 is locked, so that it is possible to follow the interlayer deformation of the building structure, which is more desirable.

[0019]

According to the present invention, the wide flat plate of the anchor has high bending rigidity in the in-plane direction, so that it is difficult to be deformed, and the mounting bracket is clamped and fixed by the pair of wide flat plates, so that the anchor pull-out resistance is large. An ALC panel can be obtained. Furthermore, even in the case of a brittle ALC panel, it is possible to effectively draw out the resistance of the panel matrix through the reinforcing steel bar, thereby improving the anchor pull-out resistance. That is, it is possible to obtain the most effective ALC panel in which the anchor having a large pull-out strength is embedded while maintaining the lightweight advantage of the ALC panel.

Further, in the case of a wall of a building where it is required to block a large load inside and outside, if the concrete is heavy and it is difficult to construct a foundation or the like, even if the anchor has a large panel mounting strength with an anchor and has a large thickness. If the lightweight ALC panel of the present invention is used, it is possible to easily realize the blocking wall according to the general ALC panel construction procedure.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing one embodiment of the present invention.

FIG. 2 is a perspective view showing an embodiment of the anchor according to the present invention.

FIG. 3 is a sectional view of FIG. 2;

FIG. 4 is a front view of FIG. 2;

FIG. 5 is a sectional view of FIG. 1;

FIG. 6 is an exploded view showing one embodiment of a mounting bracket portion of the anchor according to the present invention.

FIG. 7 is an explanatory diagram showing a state in which a load is applied to the panel and the panel is deformed in the present invention.

FIG. 8 is a partially cutaway perspective view showing an anchor buried state of a panel in a conventional example.

FIG. 9 is an explanatory view showing a state in which a load is applied to a panel and deformed in a conventional example.

FIG. 10 is an explanatory diagram showing a state of a force applied to a panel and acting on an anchor in a conventional example.

FIG. 11 is an explanatory view showing a state in which a load is applied to a panel in the conventional example and cracks occur at corners of the panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ALC panel 2 Cracked part 3 Anchor 3a Wide plate 3b Leg piece 3c Mounting bracket 3d Notch 3e Locking part 3f Welding part 3g Fastening member (bolt) 4 Reinforcing bar 4a Main bar 4b Secondary bar D Panel thickness H1, H2 Wide flat plate Height L Horizontal width of wide flat plate T Thickness of wide flat plate W Panel width F Anchor pull-out force F1 Force to open vertical piece (wide flat plate) outward F2 Force applied perpendicular to main bar P Load

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E002 NA01 NB06 PA04 RA00 RB01 XA03 XA16 2E125 AA53 AE02 AG06 AG41 AG60 BA23 BA27 BB01 BB08 BB09 BB11 BB22 BB24 BC09 BD01 BE07 BE08 BF01 CA01 CA19 EA12 2E162 AA01 CA13

Claims (6)

[Claims] 1. An ALC panel having an anchor buried tightly attached to a reinforcing bar inside a panel, wherein the anchor comprises a pair of wide flat plates and a mounting fixture clamped and fixed thereto. The wide flat plate is fixed to a center portion in the width direction of the wide flat plate, and the wide flat plate has a height of 2/5 to 4/5 of a panel thickness and is tied to two or more reinforcing reinforcing bars. ALC panel. 2. The ALC panel according to claim 1, wherein said wide flat plate is a steel plate having a thickness of 3 mm or more. 3. The ALC panel according to claim 1, wherein the wide flat plate has a lateral length equal to or more than 1/4 of a lateral width of the ALC panel. 4. A leg which forms an L-shape with said wide flat plate,
4. The ALC panel according to claim 1, wherein the ALC panel is provided on the wide flat plate. 5. The ALC panel according to claim 1, wherein the mounting bracket has a locking portion provided around the mounting bracket locked by a notch formed in the wide flat plate. . 6. The ALC panel according to claim 1, wherein the anchor is buried one at a time in each of the upper and lower central portions of the ALC panel in the width direction.