JP6085112B2 - Anchor bracket for ALC panel and ALC panel - Google Patents

Description

  The present invention relates to an ALC (lightweight aerated concrete) panel and an anchor fitting embedded in the ALC panel to attach the ALC panel to a structural frame.

  In the ALC panel, an anchor metal fitting for attaching the ALC panel to the structural frame is welded and fixed to the reinforcing bar and embedded together with the reinforcing bar. As an example of such anchor metal fittings, Patent Documents 1 to 5 describe what are fitted into a single reinforcing steel bar (secondary bar) and fixed by welding.

  As shown in FIG. 15, such an anchor fitting 90 has a female screw portion 91, a cylindrical portion 92, and a locking portion 95. The female screw portion 91 is composed of an M12 nut, and the cylindrical portion 92 is a concave portion. It consists of a pair of steel plates formed. The anchor fitting 90 has a matching portion 93 formed on both sides of the cylindrical portion 92 for joining a pair of steel plates to each other, and a locking portion 95 is bent at the lower end of the matching portion 93. The shape of the front view is a substantially rectangular shape, and the length between both ends of the locking portion 95 is 35.6 mm. The anchor fitting 90 is fixed to the reinforcing reinforcing bar 5 by fitting the engaging portion 95 to the reinforcing reinforcing bar 5 and welding it.

Japanese Patent Laid-Open No. 10-227098 JP 11-192588 A JP 2005-299386 A JP 2007-77594 A Japanese Patent Laid-Open No. 10-72872

  However, since the anchor fitting 90 has a low pullout strength, it cannot be used for an ALC panel installed where a high pullout strength is required.

  Accordingly, an object of the present invention is to provide an ALC panel having sufficient pullout strength, low cost anchor fittings, and sufficient pullout strength.

  As shown in FIG. 15, the inventor of the present invention has a conventional anchor metal fitting 90 with a length between both ends of the engaging portion 95 as short as 35.6 mm, and a shape in a front view is substantially rectangular. Because the shape has no step in the direction, the resistance to drawing is small like grass with roots not extending sideways, and even though it reached a deep buried position, it was thought that sufficient drawing strength could not be obtained .

  Therefore, the present invention extends the locking portion to the reinforcing reinforcing bar in a wing shape to increase the anchor fixing force by the reinforcing reinforcing bar, and has a large frictional resistance between the base material (ALC base material) in the portion expanded in the wing shape. To improve the pull-out strength. In addition, since the increase in the contact area with the base material at the shallow embedding position does not affect the pulling strength, the portion is made smaller than the conventional example, thereby contributing to weight reduction and cost reduction.

An anchor metal fitting for an ALC panel according to a first aspect of the present invention is an anchor metal fitting fixed to a reinforcing reinforcing bar in an ALC panel and embedded in the ALC panel. The anchor metal fitting extends in a width direction along the reinforcing reinforcing bar to be fixed. A locking portion fixed to the reinforcing reinforcing bar, a cylindrical portion extending in a height direction perpendicular to the reinforcing reinforcing bar, and extending in the height direction from the locking portion and extending in both width directions from the cylindrical portion. It consists of a pair of blade pieces and a female screw part attached or formed at the tip of the tubular part, and the locking part has a length between both ends in the width direction of the anchor metal fitting of 50 mm or more. The wing piece portions are on the side relatively close to the locking portion, the wide portion having a relatively wide width from the boundary with the cylindrical portion, and the side relatively far from the locking portion. There is a narrow portion having a relatively narrow width from the boundary with the cylindrical portion, and Rannahli, height from the center of the reinforcing rebar to stepped discontinuity boundary between the wide portion and the narrow portion, 1/5 of the height from the center of the reinforcing rebar to the tip of the anchor 2/3, and the wide part is 18 to 25 mm at the widest part from the boundary with the cylindrical part, and 20 mm from the center of the reinforcing bar from the boundary with the locking part. The front projection area up to the midway height is 300 mm ² or more, and the narrow portion has a mean width of 8 mm or less from the boundary with the cylindrical portion.

The second anchor metal fitting for ALC panel of the present invention is an anchor metal fitting fixed to a reinforcing bar in the ALC panel and embedded in the ALC panel. A blade piece continuously extending from one side in the width direction of the forming portion in the width direction, a locking portion forming portion continuous from the base end of the blade piece, and the other side in the width direction of the cylindrical portion forming portion Two steel plates having the same shape, which are continuously formed from each other and extending in the width direction, face each other so that the cylindrical portion forming portions face each other and form a cylindrical portion. The wing piece portion, the locking portion forming portion, and the mating portion are relatively disposed on the opposite side in the width direction of the cylindrical portion, and both the locking portion forming portions constitute a locking portion and are aligned with each other. The gap between the wing piece and the mating portion is welded to the tip of the cylindrical portion. The threaded portion is fixed by welding to form the anchor fitting, the locking portion has a length between both ends in the width direction of the anchor fitting of 50 mm or more, and each blade piece portion is the engagement member. A wide portion having a relatively wide width from the boundary with the cylindrical portion on the side relatively close to the stopper, and a boundary from the boundary with the cylindrical portion on the side relatively far from the locking portion. The height from the center of the reinforcing bar to which the anchor metal fitting is fixed to the step-like discontinuous boundary between the wide part and the narrow part is a narrow part having a relatively narrow width . 1/5 to 2/3 of the height from the center to the tip of the anchor fitting, and the wide portion is 18 to 25 mm at the widest portion from the boundary with the cylindrical portion, and Front projection surface from the boundary with the locking part to the middle height of 20 mm from the center of the reinforcing bar Is a but 300 mm ² or more, the narrow portion, the width of the boundary between the cylindrical portion is less than or equal to 8mm in average, the mating portion has a width from a boundary between the cylindrical portion is the width It does not exceed the width of the narrow part.

  A third anchor member for an ALC panel according to the present invention is an anchor member fixed to a reinforcing bar in an ALC panel and embedded in the ALC panel. A wing piece continuously extending from one side in the width direction of the forming portion, extending in the width direction, a half-cylindrical locking portion forming portion continuous from the base end of the wing piece portion, and the cylindrical portion forming portion Two steel plates having the same shape composed of mating portions extending in the width direction continuously from the other side in the width direction face each other so that the cylindrical portion forming portions face each other and form the cylindrical portions. The both wing piece portions, the locking portion forming portion, and the matching portion are relatively arranged on the opposite side in the width direction of the cylindrical portion, and the both locking portion forming portions constitute the locking portion. And the welded portion between the wing piece and the mating portion that are aligned with each other are welded, A female screw part is welded and fixed to the end to form the anchor metal part, and the two half-split cylindrical locking part forming parts face each other with the concave parts being shifted in the width direction of the anchor metal part. The reinforcement reinforcing bars are held from the opposite side, and a plurality of resistance welding projections projecting into the respective recesses are formed, and the projecting height of the projections is directed toward the end of the locking portion. It is characterized by being so high.

  The ALC panel of the present invention includes the ALC panel anchor fitting fixed to the reinforcing reinforcing bar cage and the reinforcing reinforcing bar cage, wherein the ALC panel anchor fitting is fixed to a secondary reinforcing bar of the reinforcing reinforcing bar cage. Is embedded inside.

  The aspect of each element of the anchor metal fitting for ALC panels of this invention and an ALC panel is illustrated.

<Anchor bracket>
Although the aspect of the anchor metal fitting is not particularly limited, since the cost can be reduced, an aspect in which at least a part excluding the female screw part is made of a steel plate is preferable, and more preferably, at least the part excluding the female screw part has the same shape as each other. It is the aspect comprised from these two steel plates.
Further, the height from the center of the reinforcing bar for fixing the anchor fitting (hereinafter sometimes referred to as the center of the reinforcing reinforcing bar) to the tip of the anchor fitting (the height of the fitting) is not particularly limited. Since it can be used for a 150 mm ALC panel, the thickness is preferably 50 to 110 mm.
Further, the reinforcing reinforcing bars for fixing the anchor metal fittings are not particularly limited, but may be a main reinforcing bar extending in the length direction of the ALC panel or a secondary reinforcing bar extending in the width direction of the ALC panel.

<Steel plate>
Although the thickness of a steel plate is not specifically limited, 0.6-2.3 mm is preferable. This is because if it is less than 0.6 mm, it is difficult to ensure the strength and it is difficult to join by welding. On the other hand, if the thickness exceeds 2.3 mm, the bending process becomes difficult. More preferably, it is 1-2 mm.

<Locking part>
By setting the length between both ends in the width direction of the anchor metal part of the locking part to be 50 mm or more, the range of the reinforcing reinforcing bars reinforced by being held by the locking part is increased, and sufficient pulling strength is obtained. be able to.
Although the aspect of a latching part is not specifically limited, it is comprised from a pair of half cylinder-shaped latching part formation part which continues from the base end of a pair of blade piece part, and a pair of half cylinder-shaped latching part formation It is preferable that the part is configured such that the concave parts are opposed to each other in the width direction of the anchor metal fitting so as to hold the reinforcing reinforcing bar from the opposite side. This is because the operation of locking the reinforcing reinforcing bars can hold the reinforcing reinforcing bars by rotating the anchor fitting in the horizontal direction, and can easily lock the reinforcing reinforcing bars.
Further, it is preferable that a protruding projection for resistance welding is formed in the recess. This is because the projection comes into contact with the reinforced reinforcing bar held, the contact area between the locking portion and the reinforcing reinforcing bar is reduced, power supply is concentrated during welding, the welding strength is increased, and the pulling strength is improved. Because.

<Projection>
The number of projections is not particularly limited, but may be one or plural. When there are a plurality of projections, the projection height of each projection is preferably higher toward the end of the locking portion. This is because each projection comes into almost equal contact with the reinforcing reinforcing bar, the welding strength is increased, and the pulling strength is improved.

<Cylindrical part>
Although the outer diameter of a cylindrical part is not specifically limited, 10-18 mm can be illustrated.

<Wing piece>
The wing piece part is on the side relatively close to the locking part, and the width from the boundary with the tubular part (boundary between the tubular part and the wing piece part when viewed from the outside of the tubular part) is relative. And a narrow part with a relatively narrow width from the boundary with the cylindrical part on the side far from the locking part, the deep part of the embedded position becomes large and the mother The contact area with the material is increased and sufficient pulling strength is obtained, and the shallow portion of the burying position is reduced to reduce weight and cost.
Although the aspect of a blade piece part is not specifically limited, Since the intensity | strength of a latching | locking part improves, it is preferable to extend in the height direction from the whole front-end | tip part of a latching | locking part.
Also, aspects of the boundary between the wide portion and the narrow portion may illustrate a stepped discontinuous boundaries as wide as the wide portion to the narrow portion is suddenly changed by boundary.
The size of the wing piece is not particularly limited, but it is reinforced from the boundary with the locking part (the boundary between the locking part and the wing piece when viewed from the side opposite to the reinforcing reinforcing bar side of the locking part). A size in which the front projection area from the center of the reinforcing bar to the middle height of 2/3 of the height from the tip of the anchor metal fitting is 400 to 800 mm ² can be exemplified.

<Wide part>
The height from the center of the reinforcing bar to the boundary between the wide part and the narrow part (wide part height) is not particularly limited, but if this height is low, the strength of the locking part may be reduced. If the height is high, the portion that does not contribute much to the pullout strength increases, and the weight and cost increase. Therefore, 1/5 to 2/3 of the height from the center of the reinforcing bar to the tip of the anchor metal fitting is preferable. Preferably, it is 1/5 to 1/2 of the same height. Moreover, although the specific height from the center of a reinforcing bar to the boundary of a wide part and a narrow part is not specifically limited, 20-70 mm is preferable. This is because if it is less than 20 mm, the strength of the locking portion may be lowered, and if it exceeds 70 mm, a portion that does not contribute much to the pullout strength increases, and the weight and cost increase. More preferably, it is 24-70 mm.
The size of the wide portion is not particularly limited, but from the boundary with the locking portion (the boundary between the locking portion and the wide portion when viewed from the side opposite to the reinforcing reinforcing bar side of the locking portion), It is preferable that the front projection area from the center to the midway height of 20 mm is 300 mm ² or more. This is because if it is less than 300 mm ² , the contact area with the base material at a deep embedding position is small, so that a large frictional resistance cannot be obtained between the base material and sufficient pulling strength cannot be obtained.
The width of the wide portion is not particularly limited, but is 18 to 25 mm at the widest portion from the boundary with the tubular portion (boundary between the tubular portion and the wide portion when viewed from the outside of the tubular portion). Preferably there is. This is because if it is less than 18 mm, sufficient pulling strength cannot be obtained, and if it exceeds 25 mm, the width of the anchor metal fitting becomes too large and may interfere with the reinforcing steel bars.
Moreover, it is preferable that the wide part is provided with the horizontal piece part in parallel with the panel wall surface. This is because, when the anchor is pulled out, the horizontal piece portion and the base material are opposed to each other, so that variations in the pulling strength can be reduced and the allowable load can be increased.
Moreover, it is preferable that the wide part is provided with a notch. This is because the entanglement with the base material increases, the pulling friction resistance increases, and the pulling strength improves.
Moreover, it is preferable that the wide part is provided with a through hole. This is because the entanglement with the base material increases, the pulling friction resistance increases, and the pulling strength improves.

<Horizontal part>
Although the aspect of a horizontal piece part is not specifically limited, Since formation is easy, the aspect formed by bending the upper end of a wide part is preferable. In addition, when the two locking portion forming portions are in the shape of a half cylinder and the recesses are opposed to each other while being displaced in the width direction of the anchor bracket, the variation in the pulling strength can be reduced. The aspect extended only to the opposite side to the opening direction of the half cylinder-shaped latching | locking part formation part continuous to the base end of the wide part which has is preferable.
Moreover, although the magnitude | size of a horizontal piece part is not specifically limited, A width | variety is 10-25 mm and depth can illustrate 5-15 mm.
Moreover, the horizontal piece part can illustrate the aspect provided in the range to 1/2 of the height from the center of a reinforcing bar to the front-end | tip of an anchor metal fitting.

<Notch>
Although the magnitude | size of a notch part is not specifically limited, An opening length can illustrate 2 mm or more and depth of 4 mm or more.

<Narrow part>
Although the aspect of the narrow portion is not particularly limited, an aspect in which the width is partially wide or an aspect in which the width is substantially the same from the proximal end to the distal end can be exemplified, and an aspect in which the width is approximately the same from the proximal end to the distal end. preferable. This is because the ALC slurry can be prevented from flowing into the cylindrical portion while reducing the weight and the cost.
The upper limit of the average value of the width of the narrow portion from the boundary with the cylindrical portion (the boundary between the cylindrical portion and the narrow portion when viewed from the outside of the cylindrical portion) is not particularly limited, but is preferably 8 mm. . This is because if it exceeds 8 mm, the portion that does not contribute much to the pullout strength increases, and the weight and cost increase. More preferably, it is 6.5 mm.
Although the minimum of the average value of the width | variety of a narrow part from the boundary with a cylindrical part is not specifically limited, 4 mm can be illustrated.

<Matching section>
The mode of the mating part is not particularly limited, but the width from the boundary with the cylindrical part (the boundary between the cylindrical part and the mating part when viewed from the outside of the cylindrical part) does not exceed the width of the narrow part. It is preferable. This is because the ALC slurry can be prevented from flowing into the cylindrical portion while reducing the weight and the cost. More preferably, it is the same as the width of the narrow portion. Moreover, it is preferable that it is formed with substantially the same width from the proximal end to the distal end. This is because the ALC slurry can be prevented from flowing into the cylindrical portion while reducing the weight and the cost.

<Female thread part>
The form of the female screw part is not particularly limited, and examples thereof include an aspect in which it is screwed on the inner peripheral surface of the tip part of the cylindrical part, and an aspect in which a nut is joined to the tip part of the cylindrical part.

  According to the present invention, a sufficient pullout strength can be obtained, and a low-cost anchor fitting can be provided. In addition, an ALC panel having sufficient pullout strength can be provided.

It is a perspective view of the anchor metal fitting of Example 1 for panel thickness 120mm. It is a disassembled perspective view of the anchor metal fitting. The anchor metal fitting is shown, (a) is a plan view, (b) is a front view, (c) is a right side view, and (d) is a bottom view. It is an enlarged front view near the wide part of the wing piece part of the anchor metal fitting. A part of the reinforcing steel bar cage that locks the anchor metal fitting is shown, (a) is a plan view, (b) is a front view, and (c) is a right side view. The anchor metal fitting of Example 1 for panel thickness 100mm is shown, (b) is a front view, (c) is a right view, (d) is a bottom view. The anchor metal fitting of Example 1 for panel thickness 150mm is shown, (b) is a front view, (c) is a right view, (d) is a bottom view. It is a perspective view of the anchor metal fitting of Example 2 for panel thickness 120mm. It is a disassembled perspective view of the anchor metal fitting. The anchor metal fitting is shown, (a) is a plan view, (b) is a front view, (c) is a right side view, and (d) is a bottom view. It is an enlarged front view near the wide part of the wing piece part of the anchor metal fitting. A part of the reinforcing steel bar cage that locks the anchor metal fitting is shown, (a) is a plan view, (b) is a front view, and (c) is a right side view. The anchor metal fitting of Example 2 for panel thickness 100mm is shown, (b) is a front view, (c) is a right view, (d) is a bottom view. The anchor metal fitting of Example 2 for panel thickness 150mm is shown, (b) is a front view, (c) is a right view, (d) is a bottom view. The anchor metal fitting of a prior art example is shown, (a) is a top view, (b) is a front view, (c) is a right view. A part of the reinforcing steel bar cage that locks the anchor metal fitting is shown, (a) is a plan view, (b) is a front view, and (c) is a right side view. The anchor metal fitting of the reference example for panel thickness 100mm is shown, (a) is a top view, (b) is a front view, (c) is a right view, (d) is a bottom view. A part of the reinforcing steel bar cage that locks the anchor metal fitting is shown, (a) is a plan view, (b) is a front view, and (c) is a right side view. The anchor metal fitting of the reference example for panel thickness 120mm is shown, (b) is a front view, (c) is a right view. A part of the reinforcing steel bar cage that locks the anchor metal fitting is shown, (a) is a plan view, (b) is a front view, and (c) is a right side view. The entire reinforcing steel bar is shown, (a) is a side view for a panel thickness of 100 mm, (b) is a side view for a panel thickness of 120 mm, (c) is a front view on the tension side, and (d) is a compression side. FIG. An anchor pull-out test of an ALC panel is shown, (a) is a perspective view showing an outline of the test, and (b) is a cross-sectional view of Example 1 for a panel thickness of 120 mm during the test. The anchor metal fitting of the example of a change is shown, (b) is a front view, (c) is a right view, (d) is a bottom view.

[Anchor fittings of examples, reference examples and conventional examples]
<< Example 1 for panel thickness of 120 mm >>
The anchor fitting 10 of Example 1 used for the ALC panel having a thickness of 120 mm shown in FIGS. 1 to 5 extends in the width direction of the ALC panel 1 by the compression side reinforcement 3 of the reinforcing reinforcing bar 2 in the ALC panel 1. It is used by being fixed to the secondary reinforcement 5 which is a reinforcing steel bar. The anchor metal fitting 10 extends from the engaging portion 15 extending in the width direction along the accessory muscle 5 and fixed to the accessory muscle 5, the cylindrical portion 12 extending in the height direction perpendicular to the accessory muscle 5, and the engaging portion 15. A pair of blade pieces 13 and 13 extending in the height direction and extending in both width directions from the cylindrical portion 12, a pair of mating portions 14 and 14 extending in the width direction from the cylindrical portion 12, and the cylindrical portion 12 It consists of a female screw portion 21 provided at the tip. The locking part 15, the cylindrical part 12, the pair of blade pieces 13, 13 and the pair of mating parts 14, 14 are composed of two concave steel plates 11, 11 having the same shape, and the female thread part is composed of a nut 21. Has been. The anchor fitting 10 is formed by joining two concave steel plates 11 and 11 and a nut 21 by welding. In the figure, the cross-hatched portion with a solid line is a weld bead 59 at the time of joining.

  The concave steel plate 11 is formed by pressing a single steel plate having a thickness of 1.6 mm, and a cylindrical portion forming portion 20 curved in a substantially half-cylindrical cylindrical shape is formed in the intermediate portion in the width direction. A wing piece portion 13 extending in the width direction continuously from one side in the width direction of the tubular portion forming portion 20 is formed at one end portion in the direction, and the tubular portion forming portion is formed at the other end portion in the width direction. 20, a mating portion 14 is formed extending continuously in the width direction from the other side in the width direction, and the base end of the wing piece portion 13 is continuously bent from the base end of the wing piece portion 13 into a substantially halved cylindrical shape. A locking portion forming portion 15a is formed. The two concave steel plates 11 having the same shape are opposed to each other so that the concave portions of the cylindrical portion forming portions 20 and 20 face each other, and between the wing piece portions 13 and the mating portion 14 that are aligned with each other. Are joined by welding.

  The cylindrical portion 12 is formed by the cylindrical portion forming portions 20 and 20 formed on the two concave steel plates 11 and 11 facing each other so that the concave portions face each other, and the base end and the distal end are opened. It is cylindrical. An M12 nut 21 that is a female screw portion is joined to the tip of the cylindrical portion 12 by welding. The height from the center line B of the accessory muscle 5 to the tip of the nut 21 is 78 mm (this value is the metal fitting height H). The height from the center line B of the accessory muscle 5 to the tip of the cylindrical portion 12 is 67.2 mm, and the outer diameter of the cylindrical portion 12 is 17.5 mm.

The locking portion 15 includes a pair of locking portion forming portions 15a and 15a formed on the two concave steel plates 11 and 11, respectively. The concave portions 17 and 17 of the pair of locking portion forming portions 15a and 15a are opposed to each other while being shifted from each other in the width direction of the anchor fitting 10, and hold the auxiliary muscle 5 from the opposite side. Yes. The length W between both ends of the anchor fitting 10 in the width direction of the locking portion 15 is 60 mm, the width between the pair of locking portion forming portions 15a and 15a is 21 mm, and each locking portion forming portion 15a has a width of 21 mm. The width is 19.5 mm.
Moreover, the diameter of the inner peripheral surface 16 of the recessed part 17 of each latching | locking part formation part 15a is 4.3 mm. Two projections 18 and 19 for resistance welding project from the inner peripheral surface 16. The two projections 18 and 19 have different projecting heights from the inner peripheral surface 16, and the projections 18 on the center side, that is, the cylindrical portion 12 side, have relatively low projecting heights, that is, the end side, The projection 19 on the side opposite to the cylindrical portion 12 has a relatively high protrusion height.

  The wing piece 13 is formed on each of the two concave steel plates 11, 11 extends in the width direction from the cylindrical portion 12, and extends in the height direction from the entire tip of the locking portion 15, It extends to the tip of the cylindrical portion 12. The blade piece 13 is formed on the proximal end side of the anchor fitting 10 and has a relatively wide portion 22 and a narrow portion 23 that is formed on the distal end side of the anchor fitting 10 and has a relatively narrow width. The wide portion 22 and the narrow portion 23 are connected in series, and the boundary between the wide portion 22 and the narrow portion 23 is a step-like discontinuous boundary so that the width changes suddenly.

  The wide portion 22 has a substantially rectangular shape, and the height from the center line B of the accessory muscle 5 to the boundary between the wide portion 22 and the narrow portion 23, that is, the tip of the wide portion 22 is 28.5 mm (this The value is the wide part height h). The wide portion 22 has the widest range from the tip to the base end of the tubular portion 12, and the width of this range from the boundary with the tubular portion 12 when viewed from the outside of the tubular portion 12 is 21. 3 mm. At the distal end of the wide portion 22, a cutout portion 24 is formed by cutting away from the distal end of the wide portion 22 in the proximal direction. As for the size of the notch 24, the opening length (length in the width direction of the anchor fitting) is 3.2 mm, and the depth (length in the height direction of the anchor fitting) is 5 mm. Further, a horizontal piece 25 is bent at the tip of the wide portion 22 so as to be substantially perpendicular to the wide portion 22.

  The horizontal piece portion 25 is extended on the opposite side to the opening direction of the locking portion forming portion 15a formed continuously at the base end of the wide portion 22 where the horizontal piece portion 25 is provided, As for the size, the width is 11.8 mm, and the depth (the length in the direction perpendicular to the surface of the wide portion 22) is 8 mm.

  The narrow portion 23 is extended with substantially the same width from the boundary with the wide portion 22 to the tip of the tubular portion 12, and from the boundary with the tubular portion 12 when viewed from the outside of the tubular portion 12. The width is 6.3 mm.

  The mating portion 14 is formed to have substantially the same width as the narrow portion 23 from the proximal end to the distal end of the tubular portion 12, abuts against one surface of the blade piece 13, and is joined to the blade piece 13 by welding. .

  The anchor metal fitting 10 is engaged with the secondary reinforcement 5 of the compression side reinforcement 3 so that the tip faces the wall surface of the ALC panel 1 on the side close to the tension side reinforcement 6 (the side far from the compression side reinforcement 3). 15 is locked and is fixed to the accessory muscle 5 by being joined to the accessory muscle 5 by spot welding.

<< Example 1 for panel thickness 100 mm >>
The anchor metal fitting 26 of Example 1 used for the ALC panel having a thickness of 100 mm shown in FIG. 6 is from the center line B of the accessory muscle 5 to the tip of the cylindrical portion 12 so that the metal fitting height H is 58 mm. The height is changed to 47.2 mm (therefore, the length in the height direction of the narrow portion 23 and the mating portion 14 is 20 mm shorter than the anchor fitting 10). The same as the anchor fitting 10. In the figure, the cross-hatched portion with a solid line is a weld bead 59 at the time of joining. In FIG. 6, the same parts as those of the anchor fitting 10 are denoted by the same reference numerals.

<< Example 1 for panel thickness of 150 mm >>
The anchor fitting 27 of Example 1 used for the ALC panel with a thickness of 150 mm shown in FIG. 7 is from the center line B of the accessory muscle 5 to the tip of the cylindrical portion 12 so that the fitting height H is 108 mm. The height has been changed to 97.2 mm (therefore, the length in the height direction of the narrow portion 23 and the mating portion 14 is 30 mm longer than the anchor fitting 10). The same as the anchor fitting 10. In the figure, the cross-hatched portion with a solid line is a weld bead 59 at the time of joining. In FIG. 7, the same parts as those of the anchor metal fitting 10 are denoted by the same reference numerals.

<< Example 2 for panel thickness of 120 mm >>
The anchor metal fitting 30 of Example 2 used for the ALC panel having a thickness of 120 mm shown in FIGS. 8 to 12 has a metal fitting height H of 78 mm, and the height from the center line B of the accessory muscle 5 to the tip of the cylindrical portion 12. The length W between both ends in the width direction of the anchor fitting 30 of the locking portion 15 is 60 mm. The anchor fitting 30 is different from the anchor fitting 10 of the first embodiment in that the shape of the wing piece portion 31 (particularly, the wide portion 32) is changed, and the other points are the same as the anchor fitting 10. Therefore, the anchor fitting 30 will be described with a focus on the wing piece portion 31, and the same points as the anchor fitting 10 are the same as those of the anchor fitting 10, so the description thereof will be omitted. In the figure, the cross-hatched portion with a solid line is a weld bead 59 at the time of joining. 8-12, the same code | symbol is attached | subjected to the same site | part as the anchor metal fitting 10. FIG.

  The pair of blade pieces 31 are respectively formed on two concave steel plates 35 and 35 having the same shape. The wing piece portion 31 extends in the width direction from the cylindrical portion 12, extends in the height direction from the entire tip of the locking portion 15, and extends to the tip of the cylindrical portion 12. Further, the wing piece portion 31 is formed on the proximal end side of the anchor fitting 10 and has a relatively wide width portion 32, and is formed on the distal end side of the anchor fitting 10 and has a relatively narrow width portion 33. The wide portion 32 and the narrow portion 33 are connected in series, and the boundary between the wide portion 32 and the narrow portion 33 is a step-like discontinuous boundary so that the width changes suddenly.

  The wide portion 32 has a substantially rectangular shape, and a corner on the tip side is cut off obliquely. From the center line B of the accessory muscle 5 to the boundary between the wide portion 32 and the narrow portion 33, that is, the tip of the wide portion 32. Is 23.5 mm (this value is the width h of the wide portion). The wide part 32 has the widest range from the base end side of the part cut off obliquely to the base end of the cylindrical part 12, and the wide part 32 is the distance from the cylindrical part 12 when viewed from the outside of the cylindrical part 12. The width of this range from the boundary is 21.3 mm. Further, a cutout portion 34 is formed in the middle portion of this range by cutting out from the side end of the wide portion 32 toward the tubular portion 12. As for the size of the notch 34, the opening length (length in the height direction of the anchor fitting) is 4 mm, and the depth (length in the width direction of the anchor fitting) is 5 mm.

  The anchor metal fitting 30 is engaged with the secondary reinforcement 5 of the compression side reinforcement 3 such that the tip thereof faces the wall surface of the ALC panel 1 on the side close to the tension side reinforcement 6 (the side far from the compression side reinforcement 3). 15 is locked and is fixed to the accessory muscle 5 by being joined to the accessory muscle 5 by spot welding.

<< Example 2 for panel thickness of 100 mm >>
The anchor fitting 36 of the second embodiment used in the ALC panel having a thickness of 100 mm shown in FIG. 13 is from the center line B of the accessory muscle 5 to the tip of the tubular portion 12 so that the fitting height H is 58 mm. The height is changed to 47.2 mm (therefore, the length in the height direction of the narrow portion 33 and the mating portion 14 is 20 mm shorter than that of the anchor fitting 30). The same as the anchor fitting 30. In the figure, the cross-hatched portion with a solid line is a weld bead 59 at the time of joining. In FIG. 13, the same parts as those of the anchor metal fitting 30 are denoted by the same reference numerals.

<< Example 2 for panel thickness of 150 mm >>
The anchor metal fitting 37 of Example 2 used for the ALC panel having a thickness of 150 mm shown in FIG. 14 is from the center line B of the accessory muscle 5 to the tip of the cylindrical portion 12 so that the metal fitting height H is 108 mm. The height has been changed to 97.2 mm (therefore, the length in the height direction of the narrow portion 33 and the mating portion 14 is 30 mm longer than the anchor fitting 30). The same as the anchor fitting 30. In the figure, the cross-hatched portion with a solid line is a weld bead 59 at the time of joining. In FIG. 14, the same parts as those of the anchor fitting 30 are denoted by the same reference numerals.

<Conventional example>
A conventional anchor fitting 90 shown in FIGS. 15 and 16 is used for an ALC panel having a thickness of 100 mm, and includes a female screw portion 91, a cylindrical portion 92, a matching portion 93, and a locking portion 95. Yes. The female thread portion 91 is formed of an M12 nut, and the portions other than the female thread portion 91 are substantially rectangular in shape, and a concave portion is formed in an intermediate portion in the width direction, and two concave steel plates having the same shape with a thickness of 1.6 mm are formed. It is formed by making it oppose and joining by welding.

  The cylindrical portion 92 is formed so as to increase toward the tip, and a female screw portion 91 is fitted and welded to the tip. The metal fitting height H from the center line B of the accessory muscle 5 to the tip of the female screw portion 91 is 57.5 mm, and the height from the center line B of the accessory muscle 5 to the tip of the cylindrical portion 92 is 52.5 mm. is there.

  The mating portions 93 are formed on both sides of the cylindrical portion 92, and are formed from the tip of the cylindrical portion 92 to the vicinity of the proximal end of the cylindrical portion 92, and the cylindrical portion 92 becomes smaller toward the proximal end. The part 93 is wider toward the base end.

  The locking portions 95 are respectively formed at the base ends of the mating portions 93 and are separated into two in the width direction of the anchor fitting 90. The length W between both ends in the width direction of the anchor fitting 90 of the locking portions 95 and 95 separated into two is 35.6 mm, and the width of each locking portion 95 is 12.8 mm. Each of the locking portions 95 and 95 is curved in a substantially half-cylindrical shape, and the concave portions 97 face each other so as to hold the accessory muscle 5. The diameter of the inner peripheral surface 96 of the recess 97 is 4.3 mm. A projection 98 for resistance welding projects from the inner peripheral surface 96 of the recess 97.

  The anchor metal fitting 90 is engaged with the secondary reinforcement 5 of the compression side reinforcement 3 such that the tip thereof faces the wall surface of the ALC panel 1 on the side close to the tension side reinforcement 6 (the side far from the compression side reinforcement 3). 95 is locked and is fixed to the accessory muscle 5 by being joined to the accessory muscle 5 by spot welding.

<< Reference example for panel thickness 100mm >>
An anchor fitting 70 of a reference example used for an ALC panel having a thickness of 100 mm shown in FIGS. 17 and 18 includes an engaging portion 75 fixed to the accessory muscle 5, a cylindrical portion 72, and a cylindrical portion 72. A plate-like wing piece portion 73 provided in the width direction and a female screw portion 71 are provided.

  The cylindrical part 72 is made of a cylindrical steel pipe having a length of 41.2 mm, an outer diameter of 19.1 mm, and a cylinder thickness of 2 mm. At the tip of the cylindrical portion 72, a nut 71 of M12 which is a female screw portion is joined. The metal fitting height H from the center line B of the accessory muscle 5 to the tip of the nut 71 is 78 mm.

  The blade piece 73 has a substantially rectangular shape made of a plate-shaped steel plate having a thickness of 1.6 mm, and a corner on the tip side is cut off obliquely, and is joined to a side surface of the cylindrical portion 72. The height from the center line B of the accessory muscle 5 to the tip of the blade piece 73 is 27 mm, and the width of the widest portion is 20.5 mm.

  The locking portions 75 are respectively formed at the base ends of the blade piece portions 73 provided on both sides of the cylindrical portion 72 and are separated into two in the width direction of the anchor fitting 70. The length W between both ends in the width direction of the anchor fitting 70 of the locking portions 75 and 75 separated into two is 60 mm, and the width between the two locking portions 75 and 75 is 19.1 mm. The width of each locking portion 75 is 20.5 mm. Each of the locking portions 75 and 75 is bent in a substantially half-cylindrical shape so that the concave portions 77 face each other and hold the accessory muscle 5. The diameter of the inner peripheral surface 76 of the recess 77 is 4.3 mm. On the inner peripheral surface 76 of the recess 77, two projections 78 for resistance welding having the same protruding height are provided.

  The anchor fitting 70 is engaged with the secondary reinforcement 5 of the compression side reinforcement 3 so that the tip thereof faces the wall surface of the ALC panel 1 on the side close to the tension side reinforcement 6 (the side far from the compression side reinforcement 3). 75 is locked and fixed to the accessory muscle 5 by being joined to the accessory muscle 5 by spot welding.

<< Reference example for panel thickness 120mm >>
The anchor metal fitting 79 of the reference example used for the ALC panel having a thickness of 120 mm shown in FIGS. 19 and 20 is obtained by changing the anchor metal fitting 70 for an ALC panel having a thickness of 120 mm. For this reason, the length of the cylindrical portion 72 is changed to 61.2 mm so that the metal fitting length H is 78 mm, and the other points are the same as the anchor metal fitting 70. 19 and 20, the same parts as those of the anchor fitting 70 are denoted by the same reference numerals.

  The anchor metal fitting 79 is engaged with the secondary reinforcement 5 of the compression side reinforcement 3 such that the tip thereof faces the wall surface of the ALC panel 1 on the side close to the tension side reinforcement 6 (the side far from the compression side reinforcement 3). 75 is locked and fixed to the accessory muscle 5 by being joined to the accessory muscle 5 by spot welding.

[Manufacture of ALC panel with the anchor bracket embedded]
Reinforcing bar 2 embedded in an ALC panel (outside dimensions: length 1800 mm, width 600 mm, thickness 100 mm or 120 mm), as shown in FIG. The compression side reinforcement 3 embedded in the vicinity of the surface of the panel 1 and the tension side reinforcement 6 embedded in the vicinity of the back surface of the ALC panel on the tension side are connected by the connecting reinforcement 9 to form a cage shape. It is configured.
The compression side reinforcement 3 is assembled in a lattice pattern with three main bars 4 extending in the panel length direction and six auxiliary bars 5 extending in the panel width direction.
The tension side reinforcement 6 is assembled in a lattice pattern with four main reinforcing bars 7 extending in the panel length direction and six auxiliary reinforcing bars 8 extending in the panel width direction.
The diameter of both main bars 4 and 7 is 5 mm, the diameter of both accessory bars 5 and 8 is 4 mm, and the distance between the main bar 4 of the compression side bar 3 and the surface of the ALC panel is 15 mm. 6 and the back side of the ALC panel is also 15 mm.

  And as shown in the figure which shows a part of reinforcing steel bar which locked each anchor metal fitting, from the lower end of ALC panel 1 so that the center of a cylindrical part may be located 80 mm below from the upper end of ALC panel 1 Each anchor metal fitting was welded and fixed to the secondary reinforcing bar 5 of the compression side reinforcement 3 so that the center of the cylindrical portion was positioned 80 mm above.

  Next, set the reinforcing steel bar to which the anchor fitting is welded and fixed to a mold (not shown), pour the ALC slurry into the mold, remove the semi-cured ALC cake and cut the wire into a panel shape, Further, autoclaving was performed to obtain ALC panel 1. When the anchor metal fitting is embedded in the ALC panel 1, a sponge rubber lid 55 is attached to the opening of the cylindrical portion so that the ALC slurry does not flow into the cylindrical portion.

[Anchor pull-out test]
The ALC panel 1 manufactured as described above was subjected to an anchor pull-out test in accordance with “9.6 Pull-out strength test of embedded parts” of JIS A 5416-2007 “Lightweight cellular concrete panel (ALC panel)”. . Specifically, as shown in FIG. 22 showing the outline of the anchor pull-out test, the ALC panel of the test specimen is brought to the reaction force frame for the anchor pull-out test, and the end portion where the anchor metal fitting is embedded is taken out 300 mm from the support portion. Installed in the state of holding. Thereafter, a hydraulic jack was used as the anchor, and a tensile load was loaded until the anchor portion of the panel broke. The loading speed was 100 N to 200 N per second, and the maximum tensile load (pullout strength) was measured. The results are shown in Table 1.

  The anchor metal fittings tested were the anchor metal fitting 10 of Example 1 for a panel thickness of 120 mm, the anchor metal fitting 30 of Example 2 for a panel thickness of 120 mm, the anchor metal fitting 79 of a reference example for a panel thickness of 120 mm, and the panel thickness of 100 mm The anchor fitting 70 of the reference example and the anchor fitting 90 of the conventional example.

The anchor fitting 10 of Example 1 for a panel thickness of 120 mm is as described in the paragraphs 0028 to 0037. Moreover, the anchor metal fitting 10 is a region cross-hatched with a broken line in FIG. 3B, and is a boundary with the locking portion 15 (when viewed from the side opposite to the auxiliary muscle 5 side of the locking portion 15). Blade boundary from the center line B of the accessory muscle 5 to the middle height of 2/3 of the metal fitting height H (52 mm from the center line B of the accessory muscle 5) from the boundary between the locking part 15 and the blade part 13) The front projected area s2 of -13 is 657 mm ² , which is a region cross-hatched with a broken line in FIG. 4, from the boundary with the locking portion 15 to the middle portion height of 20 mm from the center line B of the accessory muscle 5. The front projection area s1 is 343 mm ² .

The anchor fitting 30 of Example 2 for a panel thickness of 120 mm is as described in the paragraphs 0040 to 0043. Further, the anchor fitting 30 is a region cross-hatched with a broken line in FIG. 10B, and is a boundary with the locking portion 15 (when viewed from the side opposite to the auxiliary muscle 5 side of the locking portion 15). The blade piece from the center line B of the secondary reinforcement 5 to the middle height of 2/3 of the metal fitting height H (52 mm from the center line B of the secondary reinforcement 5) from the boundary between the locking portion 15 and the blade piece 31) The front projection area s2 of 31 is 548 mm ² , which is an area cross-hatched with a broken line in FIG. 11, from the boundary with the locking portion 15 to the middle portion height of 20 mm from the center line B of the accessory muscle 5. The front projection area s1 is 319 mm ² .

The anchor bracket 79 of the reference example for the panel thickness of 120 mm is as described in the paragraphs 0056 to 0057. Further, the anchor metal fitting 79 has a blade piece from a boundary with the locking portion 75 (a boundary between the locking portion 75 and the blade portion 73 when viewed from the side opposite to the secondary muscle 5 side of the locking portion 75). The front projection area of the wing piece portion 73 to the tip of the portion 73 is 426 mm ² , and the front projection area of the wing piece portion 73 from the boundary with the locking portion 75 to the middle height of 20 mm from the center line B of the accessory muscle 5 is 328 mm ² .

The anchor fitting 70 of the reference example for the panel thickness of 100 mm is as described in the paragraphs 0051 to 0055. Further, the anchor metal fitting 70 has a blade piece from a boundary with the locking portion 75 (a boundary between the locking portion 75 and the blade portion 73 when viewed from the side opposite to the secondary muscle 5 side of the locking portion 75). The front projection area of the wing piece portion 73 to the tip of the portion 73 is 426 mm ² , and the front projection area of the wing piece portion 73 from the boundary with the locking portion 75 to the middle height of 20 mm from the center line B of the accessory muscle 5 is 328 mm ² .

The anchor metal fitting 90 (for panel thickness of 100 mm) of the conventional example is as described in the paragraphs 0046 to 0050. Further, the anchor metal fitting 90 is connected to the auxiliary muscle 5 from the boundary with the engaging portion 95 (the boundary between the engaging portion 95 and the mating portion 93 when viewed from the side opposite to the auxiliary muscle 5 side of the engaging portion 95). From the boundary with the locking portion 95, the front projected area of the mating portion 93 is 346 mm ² from the center line B to 2/3 of the metal fitting height H (38.3 mm from the center line B of the accessory muscle 5). The front projection area of the mating portion 93 from the center line B of the accessory muscle 5 to the midway height of 20 mm is 194 mm ² .

  In Table 1, in the column of the anchor bracket shape, H is the bracket height, W is the length between both ends of the anchor bracket in the width direction, and h is the width of the wide portion or the center line B of the accessory muscle 5 The height to the tip of the wing piece part of the reference example, w1 is the maximum width of the wide part or the wing piece part of the reference example, w2 is the average width of the narrow part, s2 is the boundary of the locking part, Front projected area of the blade part from the center line B to the middle height of 2/3 of the metal fitting height or the conventional mating part, s1 is the height from the center line B of the secondary muscle 5 from the boundary with the locking part It is a front projection area of a wide part up to a middle height of 20 mm, a blade part of a reference example, or a mating part of a conventional example.

When the average value of the maximum tensile load was compared between the conventional example and the reference example for a panel thickness of 100 mm, the conventional example was 5119N, while the reference example increased by about 35% to 6903N.
Thus, the average value of the maximum tensile load of the reference example was increased because the length between both ends in the width direction of the anchor fitting of the locking portion was long (conventional example: 35.6 mm, reference example: 60 mm). As a result, the range of the engaging portion holding the accessory muscle 5 is increased and the accessory muscle 5 is reinforced, and the distance from the end of the engaging portion to the main reinforcement 4 of the compression side reinforcement 3 is reduced. (Conventional example: 22.2 mm, Reference example: 10 mm) Since the portion of the secondary muscle 5 that is easily deformed has become smaller, the rigidity of the secondary muscle 5 is increased and it is difficult to deform.
Further, the provision of the blade piece portion increases the contact area between the anchor metal fitting and the ALC base material at a deep position of the panel, and a large frictional resistance is generated at the time of drawing.

When the average value of the maximum tensile load was compared between the reference example for the panel thickness of 120 mm and Example 1, the reference example was 7363 N, whereas in Example 1, it increased by about 13% to 8286 N.
In addition, when the average value of the maximum tensile load was compared between the reference example for the panel thickness of 120 mm and the example 2, the reference example was 7363N, whereas in the example 2, it increased by about 13% to 8296N. .
As described above, the average value of the maximum tensile load in Examples 1 and 2 increased from the reference example because the notch portion was provided in the blade piece portion (particularly, the wide portion where the panel is deep), and thus the ALC base material. This is due to the increased unity.

When the standard deviation of the maximum tensile load was compared between Example 1 and Example 2 for a panel thickness of 120 mm, Example 2 was 715 N, whereas Example 1 was halved to about 386 N. .
As described above, the standard deviation of the maximum tensile load of Example 1 is smaller than that of Example 2 because the horizontal piece is provided in the wide part, and the variation when the anchor fitting is fixed to the secondary reinforcement 5 by welding. This is because the influence of (in particular, the inclination with respect to the wall surface of the ALC panel) is reduced.

According to the embodiment, the pulling strength can be made higher than that of the conventional example.
Further, according to the embodiment, since the width of the narrow portion of the mating portion and the blade piece portion is narrower than that of the conventional example, it is possible to reduce the size and contribute to weight reduction and cost reduction while increasing the pulling strength.
According to Example 1, since the standard deviation of the maximum tensile load is small, the allowable load set by subtracting the value of three times the standard deviation of the maximum tensile load from the average value of the maximum tensile load can be increased. . Specifically, the allowable load in Example 2 for a panel thickness of 120 mm was 6150 N, whereas in Example 1 for a panel thickness of 120 mm, the allowable load was 7128 N, which was about 16% larger.

In addition, this invention is not limited to the said Example, In the range which does not deviate from the meaning of invention, it can change suitably and can be actualized.
For example, as shown in FIG. 23, like the anchor fitting 50 of the modified example of the first embodiment, the through hole 51 is provided in the wide portion 22 and the lower end 52 of the locking portion 15 is extended in parallel with the wall surface of the panel.

DESCRIPTION OF SYMBOLS 1 ALC panel 2 Reinforcement reinforcing steel cage 3 Compression side reinforcement 5 Secondary reinforcement 10 Anchor metal fitting 11 Recessed steel plate 12 Cylindrical part 13 Wing piece part 14 Matching part 15 Locking part 15a Locking part formation part 16 Inner peripheral surface 17 Recessed part 18 Projection DESCRIPTION OF SYMBOLS 19 Projection 20 Cylindrical part formation part 21 Nut 22 Wide part 23 Narrow part 24 Notch part 25 Horizontal piece part 26 Anchor metal fitting 27 Anchor metal fitting 30 Anchor metal fitting 31 Wing piece part 32 Wide width part 33 Narrow part 34 Notch part 35 Concave steel plate 36 Anchor bracket 37 Anchor bracket 50 Anchor bracket

Claims (10)

In the anchor metal fitting fixed to the reinforcing bar (5) in the ALC panel (1) and embedded in the ALC panel (1),
The anchor metal fitting extends in a width direction along the reinforcing reinforcing bar (5) to be fixed, and is a fixing part (15) fixed to the reinforcing reinforcing bar (5), and a height direction orthogonal to the reinforcing reinforcing bar (5). A pair of wing pieces (13, 31) extending in the height direction from the locking portion (15) and extending in both width directions from the cylindrical portion (12); It consists of a female screw part (21) attached or formed at the tip of the cylindrical part (12),
The locking portion (15) has a length (W) between both ends in the width direction of the anchor metal fitting of 50 mm or more,
Each wing piece (13, 31) is on a side relatively close to the locking portion (15) and has a relatively wide width from the boundary with the tubular portion (12) (22, 32) and narrow portions (23, 33) which are relatively far from the locking portion (15) and have a relatively narrow width from the boundary with the cylindrical portion (12), The height (h) from the center (B) of the reinforcing reinforcing bar (5) to the step-like discontinuous boundary between the wide portions (22, 32) and the narrow portions (23, 33) is the reinforcing reinforcing bar (5 ) From the center (B) to the tip of the anchor fitting (H) is 1/5 to 2/3,
The wide portions (22, 32) are 18 to 25 mm at the widest portion from the boundary with the cylindrical portion (12), and from the boundary with the locking portion (15), the reinforcing reinforcing bars The front projection area (s1) from the center (B) of (5) to the midway height of 20 mm is 300 mm ² or more,
An anchor fitting for an ALC panel, wherein the narrow portions (23, 33) have an average width of 8 mm or less from the boundary with the cylindrical portion (12).   The anchor metal fitting for an ALC panel according to claim 1, wherein at least a portion excluding the female screw portion (21) is made of a steel plate (11). The anchor metal fitting has a height (H) from the center (B) of the reinforcing reinforcing bar (5) to the tip of the anchor metal fitting of 50 to 110 mm,
Each blade piece (13, 31) has a height (H) of 2 from the boundary with the locking portion (15) to the center (B) of the reinforcing reinforcing bar (5) to the tip of the anchor fitting. The front projected area (s2) up to the middle height of / 3 is 400 to 800 mm ² ,
The height (h) from the center (B) of the reinforcing reinforcing bar (5) to the boundary between the wide portion (22, 32) and the narrow portion (23, 33) is 20 to 70 mm. 2. An ALC panel anchor fitting according to 2.   The ALC panel anchor metal fitting according to any one of claims 1 to 3, wherein the wide portion (22) is provided with a horizontal piece (25) parallel to the panel wall surface.   The said horizontal piece part (25) is an ALC panel anchor metal fitting of Claim 4 formed by bending the front-end | tip of the said wide part (22). The locking portion (15) is composed of a pair of half-cylindrical locking portion forming portions (15a) continuous from the base ends of the pair of blade pieces (13, 31),
The pair of half-cylindrical locking portion forming portions (15a) hold the reinforcing reinforcing bars (5) from the opposite side, with the concave portions (17) facing each other in the width direction of the anchor fitting. The anchor metal fitting for ALC panels as described in any one of Claims 1-5. The locking portion (15) is composed of a pair of half-cylindrical locking portion forming portions (15a) continuous from the base ends of the pair of blade pieces (13),
The pair of half-cylindrical locking portion forming portions (15a) hold the reinforcing reinforcing bars (5) from the opposite side, with the concave portions (17) facing each other in the width direction of the anchor fitting. And
The horizontal piece portion (25) is only on the opposite side to the opening direction of the locking portion forming portion (15a) continuous to the base end of the wide portion (22) where the horizontal piece portion (25) is provided. The anchor metal fitting for ALC panels of Claim 4 or 5 extended.   A plurality of projections (18, 19) for resistance welding projecting into the recesses (17) of the locking part forming part (15a) are formed, and the protruding height of the projections (18, 19) is set to the locking part. The anchor fitting for an ALC panel according to claim 6 or 7, wherein the anchor fitting becomes higher toward the end of (15). In the anchor metal fitting fixed to the reinforcing bar (5) in the ALC panel (1) and embedded in the ALC panel (1),
A half-cylindrical cylindrical part forming part (20), a blade piece part (13, 31) extending in the width direction continuously from one side in the width direction of the cylindrical part forming part (20), and the blade The locking part forming part (15a) continuous from the base end of the one part (13, 31) and the mating part (14) extending in the width direction continuously from the other side in the width direction of the cylindrical part forming part (20). ) Are formed so that the cylindrical part forming part (20) of the two faces each other so that the concave parts face each other to form a cylindrical part (12). The portions (13, 31), the locking portion forming portion (15a), and the mating portion (14) are relatively disposed on the opposite side in the width direction of the cylindrical portion (12), and both of the locking portion forming portions (15a) constitutes the locking portion (15), and the gap between the wing piece portions (13, 31) and the mating portion (14) that are aligned with each other is With the contact, the female threaded portion at the tip of the tubular portion (12) (21) is fixed by welding, the anchor is formed,
The locking portion (15) has a length (W) between both ends in the width direction of the anchor metal fitting of 50 mm or more,
Each wing piece (13, 31) is on a side relatively close to the locking portion (15) and has a relatively wide width from the boundary with the tubular portion (12) (22, 32), made from the engaging width is relatively narrow the narrow portion from the boundary between the cylindrical portion located relatively far side (12) from the stop unit (15) and (23, 33), wherein The height (h) from the center (B) of the reinforcing bar (5) to which the anchor metal fitting is fixed to the step-like discontinuous boundary between the wide portions (22, 32) and the narrow portions (23, 33) is , 1/5 to 2/3 of the height (H) from the center (B) of the reinforcing reinforcing bar (5) to the tip of the anchor fitting,
The wide portions (22, 32) are 18 to 25 mm at the widest portion from the boundary with the cylindrical portion (12), and from the boundary with the locking portion (15), the reinforcing reinforcing bars The front projection area (s1) from the center (B) of (5) to the midway height of 20 mm is 300 mm ² or more,
The narrow part (23, 33) has an average width of 8 mm or less from the boundary with the cylindrical part (12),
An anchor fitting for an ALC panel, wherein the width of the mating portion (14) from the boundary with the cylindrical portion (12) does not exceed the width of the narrow portion (23, 33). The anchor fitting for an ALC panel according to any one of claims 1 to 9 , is fixed to the secondary reinforcement (5) of the compression side reinforcement (3) of the reinforcing steel bar (2),
The ALC panel in which the reinforcing steel bar (2) and the anchor metal fitting for the ALC panel fixed to the reinforcing steel car (2) are embedded.

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