JP4587385B2 - How to embed anchor metal fittings that are not tied to reinforcing bars - Google Patents

Description

  The present invention relates to an ALC panel in which an anchor for mounting a panel is embedded.

Generally, an ALC panel is attached to a building body using anchor metal fittings and attachment hardware (such as a lightning plate) embedded in the ALC panel.
And there are the following two methods for embedding this anchor fitting in an ALC panel (hereinafter referred to as a panel).
1) Anchor metal fittings are preliminarily welded and fixed to the reinforcing reinforcing bars, the reinforcing reinforcing bars are arranged in the mold and the raw material slurry is injected, and then the obtained semi-cured body is cured in an autoclave.
2) A recess for embedding the anchor fitting is formed in the panel after curing the autoclave, and the anchor fitting is disposed in the recess, and then the repairing material is filled in the depression to repair the panel wall surface.

In the ALC panel according to the embedment method 1), the anchor metal fitting is tightly coupled to the reinforcing reinforcing bar, and therefore the maximum pull-out load of the anchor metal fitting can be increased.
However, on the other hand, it is necessary to change the anchor embedment position for each panel type and to accurately position it during panel manufacture, and it takes time to remanufacture replacement parts for defective panels that occur during transportation. ing.
In addition, since the anchor metal fitting is not tightly connected to the reinforcing bar in the ALC panel according to the above-described embedding method 2), the anchor metal pull-out maximum load is smaller than that of the ALC panel according to the embedding method 1).
However, it is possible to significantly shorten the period from the order of the panel to the shipment by pre-manufacturing and stocking a panel in which the anchor metal is not embedded and embedding the anchor metal in a predetermined position immediately before shipment.
Furthermore, according to this anchor metal embedment method, it is possible to obtain a panel in which the anchor metal is embedded at a predetermined position even at a construction site of a building.

And the panel which makes the recessed part for embedding an anchor metal fitting in the panel after autoclave curing and embeds the anchor metal fitting in the recessed part has been examined conventionally, and the ALC panel of patent document 1 is known.
This Patent Document 1 describes the anchor fittings 20 and 30 and the panel 1 shown in FIGS. 7 and 9.
As for the anchor metal fitting 20 shown to Fig.7 (a), the cylindrical nut 20b which has the internal thread part 20c is standingly arranged in the center part of the circular plate 20a. Moreover, the anchor metal fitting 30 shown in FIG.7 (b) has the long nut 30b which has the internal thread part 30c standingly arranged in the center part of the rectangular plate 30a.

And these anchor metal fittings 20 and 30 are embed | buried in a panel with the following procedure.
First, the drill blade 40 shown in FIG. 8 is vertically lowered from the wall surface of the panel 1 to form the anchor fitting insertion hole 23, and then the drill blade 40 is moved parallel to the wall surface inside the panel.
At this time, as shown in FIGS. 9A and 9B, the cylindrical nut 20b and the circular plate 20a of the anchor metal fitting 20 are embedded by the side blade edge 40b and the bottom blade edge 40c provided on the shaft 40a of the drill blade. A space to be formed is formed inside the panel.
Next, the anchor fitting 20 is inserted through the insertion hole 23 and moved in parallel with the wall surface inside the panel, so that the anchor fitting 20 is arranged at a predetermined burying position.
Thereafter, mortar or the like as a repair material is injected and filled into the insertion hole 23 to repair and restore the wall surface of the panel 1.
By the above procedure, the panel 1 in which the anchor metal fitting 20 is embedded is completed.
Then, a bolt is passed through a mounting hardware (inazuma plate, etc.) locked to a building body (angle steel, etc.), and the bolt is screwed into the female thread portion 20c of the cylindrical nut 20b, whereby the panel is built. Attached to the fuselage. (Not shown)

JP 60-108624 A

However, in the anchor metal fitting 20 having the circular plate 20a as shown in FIG. 7A, the anchor metal pullout maximum load is small, and even if the diameter of the circular plate 20a is simply increased, the anchor metal fitting is sufficient. A maximum pull-out load could not be obtained.
Further, in the anchor metal fitting 30 having the rectangular plate 30a as shown in FIG. 7B, the maximum pull-out load of the anchor metal fitting depends on the size and thickness of the rectangular plate 30a, the embedded position / depth in the panel, and the like. It was a big change.
Therefore, when this anchor metal fitting 30 is used, it has been difficult to clearly predict how much the anchor metal pull-out maximum load can be expected.

The inventors of the present invention have reached the present invention by analyzing the above problems and examining the contents thereof.
That is, the maximum pull-out load of the anchor fitting is in contact with the base material inside the panel and bears the pull-out load to counter the shape, area, arrangement direction of the plate portion (circular plate 20a, rectangular plate 30a), and It was found that there was a close relationship with the volume of the base material supporting the plate part and the position of the reinforcing bars.
Further, since the base material of the ALC panel is fragile, it is easily considered that the area of the plate portion is simply increased to increase the maximum pull-out load of the anchor fitting. However, in practice, the last repaired part greatly expands and the aesthetic appearance is impaired, so that the size of the plate part needs to be appropriate.
For example, in the case of the anchor metal fitting 20 shown in FIG. 7A, the circular plate 20a has a disk shape, and is not supported by contacting the base material of the panel over a sufficient length (span). For this reason, the pull-out load on the anchor metal fitting 20 is not distributed and transmitted over a wide area inside the panel and is locally borne, and the maximum pull-out load is not sufficiently obtained.

In order to solve the above problems, the present invention provides:
A cross section in which a cylindrical female screw member is erected at the center of a long plate on an ALC panel in which a cage-shaped reinforcing bar formed by connecting two grid-shaped reinforcing bar mats consisting of vertical and horizontal bars is connected In the embedment method of the anchor metal fittings that are not tightly connected to the reinforcing reinforcing bars for embedding the substantially T-shaped anchor metal fittings ,
1) A step of drilling the long hole 3 in which the long plate 2a in the anchor metal fitting 2 having a substantially T-shaped cross section is embedded at a depth equal to or less than the cover dimension X of the horizontal bar 5b on one wall surface side 1a of the panel ;
2) in the center of the elongated hole 3, the step of drilling a through-hole 4 of the cylindrical female thread member 2b in the substantially T-shaped cross section of the anchor 2 is through to the other wall surface 1b of the inserted with the panel,
3) A step of inserting the cylindrical female screw member 2b into the through hole 4 to the wall surface side 1b and arranging the elongated plate 2a while being fitted in the elongated hole 3,
4) A step of filling the long hole 3 with a repair material and covering the long plate 2a;
It was buried how the anchor not Tightened the reinforcement rebar, characterized in that sequentially carried out the above steps.
Further, in the present invention, the following items are set as more preferable conditions.
- the long plate 2 a, and the width direction of its length and ALC panel is set embedded in parallel.
· ALC panel thickness at 100 to 150 mm, also, the substantially T-shaped cross section of the elongated plates 2a length 60 to 100, a width 19～44Mm, a steel plate having a thickness of 4.5~9.0mm Further, the depth of the elongated hole 3 having a cover dimension X or less of the horizontal stripe 5b is set to 15 to 17 mm .
When the long plate 2a is placed while being fitted in the long hole 3, it is joined to the ALC panel base material by a fixture .

According to the present invention, the maximum pull-out load of the anchor metal can be sufficiently increased even if the anchor metal is not tightly coupled to the reinforcing reinforcing bar.
Furthermore, by adopting the configuration of the present invention, an ALC panel having a large maximum drawing load can be obtained even if the anchor metal fitting is embedded after curing the autoclave.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. In addition, the code | symbol attached | subjected the code | symbol same as a prior art example.
1 is a perspective view showing an embodiment of a panel, FIG. 2 is a perspective view showing an embodiment of an anchor fitting, and FIG. 3 is a sectional view showing a state in which the anchor fitting is embedded in the panel, FIG. 5 is a cross-sectional view showing a state in which a pulling load is applied to the anchor fitting.
FIG. 1 shows an anchor fitting 2 having a substantially T-shaped cross section in which a locking member 2b is erected at the center of a long plate 2a as shown in FIG. Buried.
At this time, as shown in FIG. 3, the long plate 2a is embedded parallel to the panel wall surface at a position having a depth D equal to or less than the covering dimension X of the horizontal stripe 5b on the one wall surface side 1a (upper side in the figure) of the panel 1. ing. Further, the locking member 2b faces the other wall surface side 1b (lower side in the figure) of the panel 1.
Further, the panel 1 has a thickness of 100 to 150 mm, and as shown in FIG. 2, the long plate 2a is made of a steel plate having a length L70 to 120 mm, a width W25 to 50 mm, and a thickness T5.0 to 10.0 mm. It is made up.
As shown in FIG. 1, the cage-shaped reinforcing bar 5 is formed by connecting two lattice-shaped reinforcing bar mats composed of vertical bars 5a and horizontal bars 5b, and each horizontal bar 5b is connected to each vertical bar 5a. They are arranged closer to the panel wall surface.

For a panel 1 having a thickness of 100 to 150 mm, a long plate 2 a made of a steel plate having a length L of 70 to 120 mm, a width W of 25 to 50 mm, and a thickness of T 5.0 to 10.0 mm is less than the cover dimension X of the horizontal bar 5b. When it is embedded in the position of the depth D in parallel with the panel wall surface, the maximum pull-out load of the anchor fitting 2 is increased by the action of the following components.
1) If the long plate 2a is a steel plate having a thickness T of 5.0 mm to 10.0 mm, the long plate 2a will not be bent by a pulling load. (Moving) disappears.
Further, if a long plate 2a having a thickness T of more than 10.0 mm is embedded in a panel having a small cover dimension X, it becomes easy to interfere with the horizontal stripes 5b.
Thereby, generation | occurrence | production of the rust of the elongate plate 2a by embedding depth D being shallow, and the trace of the embedded elongate plate 2a are not visible from the panel wall surface.
Furthermore, the thickness T is most preferably 5.5 to 6.5 mm.
If long plate 2a is long, it may be a rectangle, an ellipse, or a shape in which a semicircle, a triangle, or a convex polygon is added to the end side of the rectangle.
In addition, it is preferable to provide reinforcing ribs (height 1.5 to 2.5 mm) along the length L direction of the long plate 2a because the rigidity of the long plate 2a is further improved.

2) When the width W of the long plate 2a is 25 to 50 mm and the length L is 70 to 120 mm, the anchor plate is brought into contact with the base material of the panel over a sufficient length (span). 2 is supported. Moreover, even if the length L exceeds 120 mm and the width W exceeds 50 mm, the maximum pull-out load of the anchor fitting 2 does not substantially change.

3) When the long plate 2a is embedded at a position of a depth D that is equal to or less than the cover dimension X of the horizontal stripe 5b, as shown in FIG. 4 or FIG. Distributed (burdened) in a wide range.
That is, the anchor metal pull-out load F to the long plate 2a is shared and supported by the base material volume 9 inside the panel and the reinforcing reinforcing bar 5 to which the load F is transmitted.
If the embedding depth D of the long plate 2a is smaller than the cover size of the horizontal bar 5b, the long plate 2a does not interfere with the horizontal bar 5b and the pull-out load F is easily transmitted to the reinforcing reinforcing bar 5.
The long plate 2a is preferably provided with small protrusions or rough surface portions on its surface or by applying a sealer in advance, so that the repair material of the panel is in close contact with the surface of the long plate 2a and is not easily peeled off.
The long plate 2a having the length L and the width W can maintain the required maximum drawing load and reduce the area (length L × width W). Therefore, in the method of embedding anchor metal fittings in the panel after autoclave curing, the repair area of the embedded portion is preferably reduced.

4) The effect | action by embedding said anchor metal fitting 2 exhibits the effect with respect to the panel 1 whose thickness is 100-150 mm.
That is, in a panel having a thickness of less than 100 mm, the panel base material volume (panel thickness) that opposes the pull-out load of the anchor fitting 2 is reduced, so that a sufficient maximum pull-out maximum load cannot be obtained.

In FIGS. 3 and 4, the hatched portion (9) shows a damaged region 9 when the panel 1 is broken by an excessive pulling load F to the anchor fitting 2. Further, the damaged region 9 also shows a base material portion inside the panel that supported the pull-out load F to the anchor fitting 2 at the same time.
As shown in FIGS. 3 and 4, the pull-out load F to the anchor fitting 2 is transmitted to the inside of the panel three-dimensionally with an extension of about 130 degrees downward from each end of the long plate 2a. When an excessive pulling load is applied to the anchor fitting 2, the inside of the panel is destroyed along the transmission direction.

As shown in FIG. 5, when the anchor metal fitting 2 is embedded in the long plate 2a so that its length L direction and the width direction of the panel 1 are parallel to each other, as shown in FIG. As shown in the figure, the maximum load for pulling out is increased even with the same anchor fitting 2 as compared with the case where it is embedded so as to be orthogonal to the width direction of the panel 1.
As shown in FIG. 4 and FIG. 5, when the locking member 2 of the anchor metal fitting 2 is embedded in the same position of the panel so that the panel mounting parts are the same, the long plate 2a shown in FIG. The short side edges 2e on both sides in the longitudinal direction are embedded so as to approach the vertical stripe 5a in the panel.
On the other hand, in order to maintain the strength of the panel, three or more vertical bars 5a are embedded in the panel. Therefore, the pulling-out load of the anchor metal fitting 2 is borne by the entire reinforcing steel bar 5 via the vertical bars 5a in the vicinity of the anchor metal fitting 2.
Thereby, the extraction maximum load of the anchor metal fitting 2 increases.

Therefore, even if the same cage-shaped reinforcing steel bar 5 is embedded, the anchor fitting 2 is embedded so that the length L direction of the long plate 2a and the width direction of the panel 1 are parallel to each other. As a result, a panel with a larger maximum load for pulling out the anchor metal can be obtained.
At this time, if the vertical streak 5a exists immediately below the long plate 2a or within 50 mm from the short side end 2d, the pulling load to the anchor fitting 2 is efficiently passed through the vertical streak 5a. It will be shared and borne by the entire reinforcing steel bar 5.
Even if the long plate 2a is embedded so that the length L direction and the width direction of the panel are orthogonal, the horizontal stripe 5a exists within 50 mm of the short side edge 2d of the long plate 2a. In this case, the maximum pull-out load of the anchor fitting 2 can be increased similarly.

As shown in FIGS. 1 to 3, when the embedded long plate 2 a is joined to the panel base material by the fixture 6 that penetrates the insertion hole 2 e, the long plate 2 a of the anchor fitting 2 is embedded. Even if the depth D is small, the anchor fitting 2 does not easily fall off from the one wall surface side 1a. This is effective when the bolt 8 is screwed into the locking member 2b of the anchor fitting 2 from the other wall surface side 1b of the panel, as shown in FIG. That is, the anchor fitting 2 is prevented from being pushed against the one wall surface 1a of the panel 1 by a load when the bolts 8 are screwed together. In addition, you may use an adhesive agent for the joining method of the elongate plate 2a and a panel base material.

As the locking member, a long nut or a male screw member (stud bolt) can be used in addition to the cylindrical female screw member 2b as shown in FIG.
When the locking member is the cylindrical female screw member 2b, the member screwed into the bolt is the bolt 8. As shown in FIG. 1, when the panel 1 is attached to the building body via the mounting bracket 7, there is no portion projecting to the outside other than the head portion of the bolt 8.

Examples of the present invention and comparative examples will be described below.
In Examples 1 to 4 and the comparative example, as shown in FIG. 5, a grid-like reinforcing bar mat (three vertical bars 5a: a = 75 mm, b = 135 mm, c = 345 mm, d = 45 mm, 575 mm). An ALC panel (width 600 mm, length 2000 mm, thickness 100 mm) embedded with two horizontal streaks 5b at intervals was embedded in the form of two cages (covering dimension X = 20 mm from the panel wall surface) was used.
Furthermore, the anchor metal fitting 2 (anchor metal fitting 20) was arranged and embedded so that the position in the center of the panel 1 in the width direction and 80 mm inside from the short edge was the center of the locking member 2b.

The anchor fitting 2 was embedded in the panel shown in Examples 1 to 4 by the following procedure.
First, as shown in FIG. 1, a long hole 3 having the same width as the width W of the anchor metal fitting 2 is placed at a predetermined depth at a predetermined position on the one wall surface side 1a so that its longitudinal direction is parallel to the panel width direction. Drill at D.
Next, a cylindrical female screw member 2b (length: 70 mm, outer diameter: 19 mm) of the anchor fitting 2 is inserted into the center of the elongated hole 3 and a through hole 4 (diameter: 22 mm) penetrating to the other wall surface side 1b is drilled. To do.
Then, the cylindrical female screw member 2b is inserted into the through hole 4 to the other wall surface side 1b, and the long plate 2a is fitted into the long hole 3, and the fixture 6 through the insertion hole 2e is used as a base material. The anchor metal fitting 2 is installed in the panel by driving.
Finally, a repair material (manufactured by Clion Co., Ltd .: mole white) is filled into the long holes 3 to cover the long plate 2a and to smoothly finish the panel wall surface on the one wall surface side 1a.
In Tables 1 to 4 showing the evaluation results of the examples, the arrangement direction of the long plate 2a is “parallel” or orthogonal when the long direction and the panel width direction are embedded in parallel. If it is buried, “orthogonal” is displayed.

[Evaluation methods]
[Measurement method of maximum pull-out of anchor bracket]
As shown in FIG. 6, with the lower wall surface of the panel end and the upper wall surface at the middle position supported by the gantry 10 (A, B), the pull-out load F (load speed 98 N / s) was added, and the pull-out load F when the panel portion in which the anchor metal fitting 2 was embedded was broken was defined as the maximum pull-out load of the anchor metal fitting.
Further, in each of the examples and comparative examples, the same measurement was performed for each of the five panels, and the average value thereof was displayed in each table as the maximum pull-out load of the anchor fitting.
And the panel in which the average pull-out maximum load of anchor metal fittings exceeded 8000 N was set as the pass.
[Determination method of backlash (bending, buckling) of long plate]
When measuring the maximum pull-out load of the anchor bracket, the applied load and the vertical displacement of the anchor bracket increase linearly between the start of pull-out load loading and the maximum load. If the displacement increases rapidly with respect to the applied load, the long plate has a backlash due to the bending of the long plate of the anchor bracket or the buckling of the base material near the long plate. ) Has occurred.

[Example 1]
The maximum pull-out load of the anchor fitting 2 was measured when the embedding direction of the long plate 2a in the length L direction was orthogonal to the case where the embedding direction was parallel to the panel width direction. The results are shown in Table 1.
As shown in Table 1, when the anchor metal fitting 2 is embedded in the long plate 2 a so that the length L direction thereof is parallel to the width direction of the panel 1, so as to be orthogonal to the width direction of the panel 1. Compared to the buried one, the maximum pull-out load of the same anchor fitting 2 is increased by about 600N.
This is presumably because the pull-out load F of the anchor metal fitting 2 is borne by the vertical streaks 5a embedded in the center of the panel 1 in a longitudinal manner.

[Example 2]
As shown in FIG. 1, the long plate 2a is arranged in the panel 1 so that the length L direction and the width direction of the panel are parallel to each other.
At this time, the maximum pull-out load of the anchor fitting 2 was measured by changing the thickness T and the depth D of the long plate 2a. The results are shown in Table 2.
As shown in Table 2, when the thickness T of the steel plate of the long plate 2a is 6 mm or more, no play (bending or buckling) of the long plate 2a occurred. Further, even when the depth D of the long plate 2a shown in FIG. 3 is set to the same value as the cover dimension X (20 mm) of the horizontal stripes 5b, the maximum pull-out load of the anchor fitting 2 is 8000 N or more.

[Example 3]
As shown in FIG. 1, the long plate 2a is arranged in the panel 1 so that the length L direction and the width direction of the panel are parallel to each other.
At this time, the maximum pull-out load of the anchor fitting 2 was measured by changing the width W and the depth D of the long plate 2a. The results are shown in Table 3.
As shown in Table 3, when the width W of the steel plate of the long plate 2a is 32 mm or more, backlash (bending or buckling) of the long plate 2a did not occur. Further, even when the depth D of the long plate 2a shown in FIG. 3 is set to the same value as the cover dimension X (20 mm) of the horizontal bar 5b, the maximum load for pulling out the anchor fitting 2 is 8000 N or more.

[Example 4]
As shown in FIG. 1, the long plate 2a is arranged in the panel 1 so that the length L direction and the width direction of the panel are parallel to each other.
At this time, the length L of the long plate 2a was changed, and the maximum pull-out load of the anchor fitting 2 was measured. The results are shown in Table 4.
As shown in Table 4, when the length L of the steel plate of the long plate 2a is 80 mm or more, no play (bending or buckling) of the long plate 2a occurred. Further, even when the depth D of the long plate 2a shown in FIG. 3 is set to the same value as the cover dimension X (20 mm) of the horizontal stripe 5b, the maximum pull-out load of the anchor fitting 2 is 8000 N or more.

[Comparative Example 1]
As shown in FIG. 7A, the anchor metal fitting 20 in which the cylindrical nut 20b is erected at the center of the circular plate 20a is arranged so that the cylindrical female screw member 2b and the cylindrical nut 20b of the first embodiment are at the same panel position. In this manner, the circular plate 20a was embedded at a depth of 20 mm.
Table 5 shows the result of the measured maximum load of the anchor metal fitting 20 extracted.
As shown in Table 5, even when the anchor metal fitting 20 had a diameter of 50 mm (area: 1963 mm ² ) of the circular plate 20a, the maximum drawing load was far below 6830N and 8000N.

[Comparative Example 2]
Except that the thickness of the panel 1 is 80 mm, as in the fourth embodiment, as shown in FIG. 1, the long plate 2a is arranged so that the length L direction and the width direction of the panel are parallel to each other. 1 is placed.
At this time, the maximum pull-out load of the anchor fitting 20 was measured by changing the length L of the long plate 2a. The results are shown in Table 6.
As shown in Table 6, the maximum pull-out load of the anchor metal fitting 20 did not exceed 8000 N in the panel having a thickness of 80 mm.

  As mentioned above, although the Example of this invention has been described in detail based on drawing, the concrete structure of this invention is not limited to this Example, and the design change etc. of the range which does not deviate from the summary of invention are carried out. Even if it exists, it is included in this invention.

This ALC panel has a maximum pull-out load of the anchor metal of 8000 N or more even if the anchor metal is not tightly connected to the reinforcing reinforcing bar.
For this reason, it is possible to adopt as a panel that clears the maximum pull-out load (allowable load 4000N, safety factor double (8000N)) of anchor metal fittings required for wall panels on the middle floor (building height 20m to 40m). became.
And it can respond easily to the panel which became necessary suddenly due to the breakage of the panel at the construction site, etc., and the effect is also demonstrated in avoiding the delay of the construction period.

The perspective view which shows one Embodiment of the ALC panel of this invention. The perspective view which shows one Embodiment of the anchor metal fitting in this invention. Sectional drawing which shows the state by which the anchor metal fitting is embed | buried in the panel of this invention. (A) Sectional drawing which shows a mode that a panel is destroyed by the drawing-out load to the anchor metal fitting which embedded the vertical direction of the elongate plate, and the elongate direction of the panel orthogonally. (B) The top view seen from the panel short side edge surface in (a). (A) Sectional drawing which shows a mode that a panel is destroyed by the drawing-out load to the anchor metal fitting which was made to correspond with the vertical direction of a long plate, and the width direction of a panel. (B) The top view seen from the panel short side edge surface in (a). Explanatory drawing which shows the measuring method of the extraction maximum load of an anchor metal fitting. (A) (b) The perspective view of the buried anchor metal fitting of a prior art example. (A) The side view of the drill blade for panel cutting. (B) Bottom view of panel cutting drill blade. (A) The top view which shows the state by which the embedded anchor metal fitting of the prior art example was embed | buried under the inside of a panel. (B) AA sectional drawing of (a).

Explanation of symbols

1 ALC panel 1a One wall surface side 1b Other wall surface side 2 Anchor bracket 2a Long plate L Length W Width T Thickness D Depth 2b Locking member (cylindrical female screw member)
2c Female thread part 2d Short side edge 2e Insertion hole 3 Recessed part (long hole)
4 Through-hole 5 Basket-shaped reinforcing bar 5a Longitudinal bar 5b Horizontal bar X Cover size 6 Fixture 7 Mounting bracket 8 Bolt 9 Damaged area F Pull-out load 10 Bases A and B
20 embedded anchor fitting 20a circular plate 20b cylindrical nut 20c female threaded portion 23 insertion hole 25 reinforcing reinforcing bar 25a vertical reinforcement 25b horizontal reinforcement 30 embedded anchor fitting 30a rectangular plate 30b long nut 30c female threaded portion 40 drill blade 40a shaft 40b side edge 40c bottom edge 40c Cutting edge

Claims (4)

A cylindrical female screw member was erected in the center of the long plate on the ALC panel in which the cage-shaped reinforcing bar formed by connecting two grid-shaped reinforcing bar mats consisting of vertical and horizontal bars was connected. in buried how the anchor not Tightened reinforcing rebar embedded substantially T-shaped cross section of the anchor,
1) Head dimension of the long plate in the substantially T-shaped cross section of the anchor (2) (long hole 2a) is Ru is embedded (3), one wall surface side of the panel in (1a) horizontal strip (5b) (X ) Drilling at the following depth,
2) A through-hole through which the cylindrical female screw member (2b) of the anchor fitting (2) having a substantially T-shaped cross section is inserted in the center of the elongated hole (3 ) and penetrates to the other wall surface side (1b) of the panel Drilling (4 ),
3) Then, the inserting through-holes to the other wall surface side (1b) (4) to the tubular female screw member (2b), as Engineering placing while fitting the elongated plates (2a) in an elongated hole (3) in ,
4) A step of filling the long hole (3) with a repair material from one wall side (1a) of the panel and covering the long plate ( 2a);
Buried how the anchor not Tightened the reinforcement rebar, characterized in that sequentially carried out the above steps. Said elongated plate (2a), burying method of its length (L) towards direction and panel anchor not Tightened reinforcing rebar according to claim 1, wherein the width direction is by Uni buried becomes parallel. The thickness of the ALC panel is 100 to 150 mm, and the long plate having a substantially T-shaped cross section ( 2a) is a steel plate having a length of 60 to 100 mm, a width of 19 to 44 mm, and a thickness of 4.5 to 9.0 mm. Furthermore, the depth of the long hole (3) below the cover dimension (X) of the horizontal stripe (5b) is 15-1 By setting the thickness to 7 mm, the maximum pull-out load of the anchor bracket (2) is 8000 N or more. A method for embedding anchor metal fittings that are not tightly connected to the reinforcing steel bars according to claim 2. When the long plate (2a) is placed while being fitted into the long hole (3), 4. The reinforcing reinforcing bar according to claim 1, which is joined to the ALC panel base material by How to embed a large anchor bracket.

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