JP5355272B2 - Anchor bracket for ALC panel and ALC panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anchor fitting for an ALC panel capable of attaching high shearing extraction strength enduring in outdoor use, and the ALC panel using the same. <P>SOLUTION: This anchor fitting 10 buried in the ALC panel 30 includes a tubular body 12 having a width of inter-main-reinforcement-34a-distance or more in a reinforcement mat 36, arranged between a pair of reinforcement mats 36a, 36b in a width-directional position laid with two or more of main reinforcements 34a, and welded to both reinforcements of the paired reinforcement mats 36a, 36b, and a cylindrical body 14 arranged in an inner space of the tubular body 12, with both ends 24a, 24b thereof supported by a circumferential face of the tubular body 12, in which an opening end of a female screw tapped hole 26 formed on an inner circumferential face thereof is opened to a short side small port face 30b of the ALC panel 30. The tubular body 12 preferably has a length of inter-sub-reinforcement-34b-distance or more in the reinforcement mat 36, and is constituted to weld a circumferential face thereof to two or more of sub-reinforcements 34b in the pair of reinforcement mats 36a, 36b. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an ALC panel anchor fitting suitably used as a building wall such as an outer wall, a partition wall, a partition wall, and a sleeve wall, and the ALC panel thereof, and more particularly, in a veranda in a high-rise building such as an apartment house. The present invention relates to an anchor fitting for an ALC panel that is suitably used as a wall used outdoors, such as a wall separated from a neighboring door and a sleeve wall in a passage around a front door, and the ALC panel.

  Conventionally, lightweight cellular concrete panels (ALC panels) have been widely used as building materials such as building roofing materials, flooring materials, and wall materials because of their excellent properties such as lightness, heat resistance, and fire resistance. ing.

  For example, when using an ALC panel as a wall material, as shown in Patent Document 1, a horizontal plate of L-shaped angle steel material is fixed to a floor slab, and the ALC panel is erected on the horizontal plate, An ALC panel is often attached by bolting to an embedded anchor previously embedded in the ALC panel via an Inazuma plate welded to a vertical plate of L-shaped angle steel material that is erected from a horizontal plate.

  In the case of the above attachment method, since the metal fitting for attaching the ALC panel is fixed to the outside of the wall surface of the ALC panel, the metal fitting is exposed to the outside of the wall surface. Since the metal fitting is visible on the outside of the wall surface of the ALC panel, the attached ALC panel may lose its aesthetics due to the metal fitting.

  When importance is attached to the aesthetics of the ALC panel, it is desirable not to employ a method of fixing a metal fitting for attaching the ALC panel to the floor slab to the outside of the wall surface of the ALC panel. As an example of fixing the metal fitting to a surface other than the wall surface of the ALC panel, for example, in Patent Documents 2 to 3, a metal fitting for attaching the ALC panel is fixed to the lower short edge of the lower side of the ALC panel arranged upright. An example is given.

  Specifically, in Patent Document 2, a horizontal piece of an L-shaped plate is fastened to a reinforcing bar embedded in an ALC panel, and a long nut and a screw hole are provided on a hanging piece of the L-shaped plate. The ALC panel is fixed so that it opens to the lower short edge of the lower side, and a long bolt is screwed into this long nut, so that one end of the long bolt is embedded in the ALC panel and the other end is ALC. An ALC panel that protrudes from the lower short edge of the panel is disclosed. The ALC panel is vertically installed on the floor slab by fixing the other end of the long bolt to the floor slab.

  In Patent Document 3, one opening end of an anchor nut is inserted and fixed to the central surface of a U-shaped plate material formed by bending both ends of a metal plate at right angles to a reinforcing steel bar embedded in an ALC panel. There is disclosed an ALC panel in which an anchor metal fitting is fastened so that one opening end of an anchor nut is open to the lower short edge of the lower side of the ALC panel. A mounting bracket made of a U-shaped plate is further fixed to the lower short side edge of the ALC panel with a bolt so that the lower short side edge and the center surface of the mounting metal are in contact with each other. The ALC panel is erected and attached to the floor slab by welding the front ends of both sides of the mounting bracket to a metal plate embedded in the floor slab in advance.

JP 2001-26978 A JP 2004-339890 A JP 2009-97184 A

  However, when a mounting bracket for mounting the ALC panel is fixed to the lower short edge of the ALC panel and the ALC panel is installed upright on the floor slab via the mounting bracket, the ALC panel and the floor slab Shear pull-out strength is easily reduced. Conventionally, the thing of such a structure was mainly used by the partition etc., and there were many indoor use. Therefore, not much shear pullout strength is required.

  On the other hand, in the case of ALC panels used outdoors, such as a wall such as a wall on the veranda in a high-rise building such as an apartment house or a sleeve wall in the passage around the entrance, it can withstand rain and wind. Mounting strength is required. Therefore, high shear pull-out strength is required for mounting an ALC panel used outdoors. However, the conventional ALC panel is not a structure that can provide mounting strength that can withstand outdoor use.

  The problem to be solved by the present invention is to provide an ALC panel anchor fitting capable of mounting an ALC panel having a high shear pull-out strength that can withstand outdoor use, and an ALC panel using the same.

  In order to solve the above-mentioned problems, an anchor for ALC panel according to the present invention includes a plurality of main bars arranged along the length direction of the ALC panel and a plurality of sub-bars arranged along the width direction of the ALC panel. An ALC panel anchor fitting embedded in an ALC panel together with a pair of latticed reinforcing steel mats embedded in the ALC panel along a wall surface of the ALC panel. The reinforcing bar mat has a width equal to or greater than the distance between the main reinforcing bars, and is disposed between the pair of lattice reinforcing bar mats at a position in the width direction where two or more of the main reinforcing bars are applied, and welded to both reinforcing bars of the pair of reinforcing bar mats. A tubular body that has a female threaded hole for fixing the ALC panel to a floor slab, and an open end of the female threaded hole is opened on one surface of the ALC panel; Serial tubular body are those summarized in that both ends while being disposed in the internal space of the tubular body is supported on the peripheral surface of the tubular body.

  In the anchor fitting for an ALC panel according to the present invention, the tubular body has a length equal to or longer than the distance between the secondary reinforcing bars of the reinforcing bar mat, and the peripheral surface thereof has two or more secondary reinforcing bars of the pair of reinforcing bar mats. The tubular body is formed of a square tube, and a pair of opposed surfaces of the square tube are welded to the pair of reinforcing steel mats, and the other pair of opposed surfaces of the square tube are bonded to each other. Both ends of the cylindrical body are supported, and the square tube has a length of 50 to 180 mm, a width of 80 to 200 mm, a thickness of 30 to 110 mm, and a plate thickness of 1.5 to 3.5 mm. desirable.

  The gist of the ALC panel according to the present invention is that the anchor metal fitting for the ALC panel is embedded in the ALC panel.

  In the ALC panel according to the present invention, the open end of the female screw hole of the cylindrical body is opened in the short edge or wall surface of the ALC panel, length 1500 to 3500 mm, width 300 to 700 mm, thickness It is desirable that it is 75-150 mm.

  Since the tubular body of the anchor metal fitting for ALC panel according to the present invention is welded to both reinforcing bars of a pair of reinforcing bar mats embedded in the ALC panel and takes two or more of the main reinforcing bars, It is firmly fixed. And since the both ends of a cylindrical body are supported by the surrounding surface of this tubular body firmly fixed to a reinforcing bar mat, a cylindrical body is firmly supported by a tubular body.

  As a result, even when the ALC panel is attached to the lower short side facet through the open end of the anchor fitting cylindrical body embedded in the ALC panel, the attachment part of the ALC panel has high shear pull-out strength. It is possible to attach an ALC panel having a high shear pull-out strength that can withstand outdoor use.

  At this time, if the tubular body has a length equal to or greater than the distance between the secondary reinforcing bars of the reinforcing bar mat, and the peripheral surface thereof is welded to two or more auxiliary reinforcing bars of the pair of reinforcing bar mats, ALC Since it is not welding with the main reinforcement which reinforces the intensity | strength of a panel, there is no possibility of causing the cross section defect | deletion of a main reinforcement. Therefore, when the anchor metal fitting is welded to the reinforcing bar mat, the strength reduction of the reinforcing reinforcing bar can be suppressed.

  In addition, when the tubular body is formed of a square tube and a pair of opposed surfaces of the square tube are welded to the pair of reinforcing bar mats, the flat surface of the square tube and the flat reinforcing bar mat are provided. It is easy to weld the anchor bracket to the rebar mat.

  Since the ALC panel is usually in a size within the specific range, the above-described effect is surely obtained if the square tube is in a size within the specific range.

  According to the ALC panel according to the present invention, since the anchor fitting for an ALC panel having the above-described configuration is embedded in the ALC panel, it has a high shear pull-out strength that can withstand outdoor use when attached to a floor slab. Have.

It is the perspective view (a) and side view (b) showing the anchor metal fitting for ALC panels concerning one embodiment of the present invention. It is a perspective view showing the ALC panel which concerns on 1st embodiment of this invention. It is the front view (a) and the side view (b) showing the state which attached the ALC panel which concerns on 1st embodiment of this invention to the floor slab. It is a perspective view showing the ALC panel which concerns on 2nd embodiment of this invention. It is the front view (a) and the side view (b) showing the state which attached the ALC panel which concerns on 2nd embodiment of this invention to the floor slab. It is the front view (a) and side view (b) showing the anchor metal fitting A embed | buried in an ALC panel. It is the front view (a) and side view (b) showing the anchor metal fitting B embed | buried in an ALC panel. It is the front view (a) and the top view (b) showing the anchor metal fitting C embed | buried in an ALC panel. It is the front view (a) and the top view (b) showing the anchor metal fitting D embed | buried in an ALC panel. It is the front view (a) and the top view (b) showing the anchor metal fitting E embed | buried in an ALC panel. It is the front view (a) and the top view (b) showing the anchor metal fitting F embed | buried in an ALC panel. It is the front view (a) and side view (b) showing the anchor metal fitting G embed | buried in an ALC panel. It is the front view (a) and side view (b) showing the anchor metal fitting H embed | buried in an ALC panel. It is the front view (a) and side view (b) showing the anchor metal fitting I embed | buried in an ALC panel. It is the front view (a) and side view (b) showing the anchor metal fitting J embed | buried in an ALC panel. It is the front view (a) and the top view (b) showing the anchor metal fitting K embed | buried in an ALC panel. It is the front view (a) and the top view (b) showing the anchor metal fitting L embed | buried in an ALC panel. It is the front view (a) and side view (b) showing the anchor metal fitting M embed | buried in an ALC panel. It is the front view (a) and side view (b) showing the anchor metal fitting N embed | buried in an ALC panel. It is the front view (a) and side view (b) explaining the measuring method of the shear drawing strength of an ALC panel.

  Next, an embodiment of the present invention will be described in detail.

  As shown in FIG. 1, an ALC panel anchor fitting 10 (hereinafter, the ALC panel anchor fitting may be abbreviated as an anchor fitting) according to an embodiment of the present invention is a tubular body formed into a square tube. 12 and a cylindrical body 14 formed in a cylindrical shape.

  The tubular body 12 includes a pair of welded surface portions 16a and 16b welded to a reinforcing bar embedded in an ALC panel (lightweight cellular concrete panel), and a pair of connections that connect the pair of welded surface portions 16a and 16b. Surface portions 18a and 18b are provided. The peripheral surface of the tubular body 12 is formed by the pair of welding surface portions 16a and 16b and the pair of connecting surface portions 18a and 18b, and the tubular body 12 is hollow. The welding surface portions 16a and 16b and the connection surface portions 18a and 18b are formed in a flat shape, the pair of welding surface portions 16a and 16b are arranged in parallel to each other, and the pair of connection surface portions 18a and 18b are parallel to each other. Is arranged. Circular through holes 20a and 20b are formed at the center positions of the connecting surface portions 18a and 18b of the tubular body 12, respectively.

  A cylindrical body 14 is arranged in the internal space of the hollow tubular body 12. One end portion 24a of the cylindrical body 14 is inserted into the through hole 20a of the one connection surface portion 18a, and the peripheral edge of the one end portion 24a is welded to the one connection surface portion 18a. The other end 24b of the cylindrical body 14 is inserted through the through hole 20b of the other connecting surface 18b, and the periphery of the other end 24b is welded to the other connecting surface 18b. Thereby, both ends of the cylindrical body 14 are supported by the connection surface portions 18 a and 18 b of the tubular body 12. A female screw is formed on the inner peripheral surface of the cylindrical body 14, and the cylindrical body 14 has a female screw hole 26. Therefore, the cylindrical body 14 can be screwed with the male screw member.

  The anchor metal fitting 10 having the above configuration is embedded in the ALC panel together with the reinforcing reinforcing bars.

  As shown in FIG. 2, an ALC panel 30 according to an embodiment of the present invention includes a lightweight cellular concrete 32 formed into a plate wall shape, and a reinforcing steel bar 34 embedded in the lightweight cellular concrete 32 to reinforce the concrete strength. And the anchor metal fitting 10 embedded in the lightweight cellular concrete 32 together with the reinforcing steel bar 34 for attaching the ALC panel 30 to the floor slab 50. The length direction of the ALC panel 30 is the X direction shown in FIG. 2, the width direction of the ALC panel 30 is the Y direction shown in FIG. 2, and the thickness direction of the ALC panel 30 is shown in FIG. Z direction.

  The reinforcing reinforcing bar 34 includes a main reinforcing bar 34 a arranged along the length direction of the ALC panel 30 and a secondary reinforcing bar 34 b arranged along the width direction of the ALC panel 30. The reinforcing bar mat 36 is formed by combining a plurality of main bars 34a and a plurality of auxiliary bars 34b in a lattice pattern. Two reinforcing bar mats 36 are embedded in the ALC panel 30 along the wall surface 30a of the ALC panel 30, and the pair of reinforcing bar mats 36a and 36b are arranged in parallel in the ALC panel 30 with a predetermined distance. . Reinforcing bar spacers 38 that bridge the pair of reinforcing bar mats 36a and 36b are welded to the main bars 34a on the side edges of the reinforcing bar mat 36, and the reinforcing reinforcing bars 34 are formed in a cage shape. In the reinforcing bar mat 36, the auxiliary reinforcing bars 34b of the reinforcing reinforcing bars 34 are arranged inside the ALC panel 30 with respect to the main reinforcing bars 34a.

  The anchor fitting 10 is disposed between a pair of reinforcing bar mats 36 a and 36 b embedded in the ALC panel 30, and the short side facet of the ALC panel 30 at the center in the width direction of the ALC panel 30 in the ALC panel 30. One panel is disposed at the end in the length direction of the ALC panel 30 close to 30b.

  The welding surface portions 16 a and 16 b of the tubular body 12 of the anchor metal fitting 10 are arranged in parallel to the wall surface 30 a of the ALC panel 30. Further, the connecting surface portions 18 a and 18 b of the tubular body 12 are arranged in parallel to the short side edge surface 30 b of the ALC panel 30. Both open ends 22 a and 22 b of the tubular body 12 are opened in the width direction of the ALC panel 30.

  The thickness of the anchor fitting 10 is the length in the thickness direction of the ALC panel 30 and corresponds to the distance between the welding surface portions 16a and 16b of the tubular body 12, but the welding surface portions 16a and 16b of the anchor fitting 10 are the same. Is set to a length corresponding to the distance between the reinforcing bar mats 36a and 36b so as to be in contact with the auxiliary bar 34b or close to the auxiliary bar 34b to such an extent that it can be welded.

  The welded surface portions 16a and 16b of the tubular body 12 have a width equal to or greater than the distance between the main bars 34a of the reinforcing bar mat 36, and two main bars 34a are applied to the welded surface portions 16a and 16b, respectively. That is, two main reinforcing bars 34a are arranged on the outer sides in the thickness direction of the welded surface portions 16a and 16b. In the ALC panel 30, the tubular body 12 is disposed at the position in the width direction where the two principal bars 34a are applied to the welding surface portions 16a and 16b, and is restrained from both sides by a total of four principal bars 34a in the thickness direction. . The main bar 34a being applied to the welded surface portions 16a and 16b means that the main bar 34a is present in the region in the width direction of the surface of the welded surface portions 16a and 16b.

  Further, the welding surface portions 16a and 16b of the tubular body 12 have a length equal to or longer than the distance between the secondary reinforcing bars 34b of the reinforcing bar mat 36, and two auxiliary reinforcing bars 34b are applied to the welding surface portions 16a and 16b, respectively. Yes. In other words, two auxiliary bars 34b are arranged on the outer sides in the thickness direction of the welded surface portions 16a and 16b. In the ALC panel 30, the tubular body 12 is disposed at a position in the length direction where two auxiliary bars 34 b are applied to the welding surface portions 16 a and 16 b, respectively, and is restrained from both sides by a total of four auxiliary bars 34 b in the thickness direction. Has been. The fact that the secondary reinforcement 34b is applied to the welding surface portions 16a and 16b means that the secondary reinforcement 34b is present in a region in the length direction of the surfaces of the welding surface portions 16a and 16b.

  One welded surface portion 16a of the tubular body 12 is welded to the two secondary reinforcing bars 34b of the one reinforcing bar mat 36a, and the other welded surface portion 16b of the tubular body 12 is welded to the two secondary reinforcing bars 34b of the other reinforcing bar mat 36b. It is welded to. Accordingly, the tubular body 12 is welded to the accessory bars 34 b of both the reinforcing bar mats 36.

  Since both ends of the cylindrical body 14 of the anchor fitting 10 are welded to the coupling surface portions 18a and 18b so as to bridge between the coupling surface portions 18a and 18b of the tubular body 12, the axial direction thereof is the length of the ALC panel 30. It is arranged to be parallel to the direction. Further, since the other connecting surface 18b of the tubular body 12 is arranged in parallel to the short side edge surface 30b of the ALC panel 30, the other end portion of the tubular body 14 supported by the other connecting surface 18b. 24b is opened on the short side facet 30b of the ALC panel 30, and the cylindrical body 14 and the male screw member 60 can be screwed together through the opened end 24b.

  The length of the ALC panel 30 is preferably in the range of 1500 to 3500 mm. The width of the ALC panel 30 is preferably in the range of 300 to 700 mm. The thickness of the ALC panel 30 is preferably in the range of 75 to 150 mm. The length and width of the ALC panel 30 are the lengthwise dimension and the widthwise dimension of the wall surface 30a of the ALC panel 30, respectively. When the ALC panel 30 is mounted on the floor slab 50, the longitudinal direction of the wall surface 30a is along the vertical direction, and the short side direction of the wall surface 30a is along the horizontal direction.

  The size of the tubular body 12 of the anchor fitting 10 embedded in the ALC panel 30 can be appropriately determined in consideration of the size of the ALC panel 30. The length / width / thickness of the tubular body 12 are the dimension in the length direction, the dimension in the width direction, and the dimension in the thickness direction of the ALC panel 30, respectively. The length of the tubular body 12 is preferably in the range of 50 to 180 mm. The width of the tubular body 12 is preferably in the range of 80 to 200 mm. The thickness of the tubular body 12 is preferably in the range of 30 to 110 mm. The plate thickness of the tubular body 12 is preferably in the range of 1.5 to 3.5 mm.

  The ALC panel 30 can be manufactured as follows, for example. First, the reinforcing bars 34 are assembled in a cage shape, and the anchor fitting 10 is welded to a predetermined position of the reinforcing bars 34. Next, the reinforcing steel bar 34 to which the anchor fitting 10 is welded is placed in the mold. Subsequently, the siliceous raw material and calcareous raw material which are the main raw materials of the lightweight cellular concrete 32, the foaming agent, water, and various additives as necessary are kneaded with a mixer. Next, the slurry obtained by kneading is poured into a mold in which reinforcing bars 34 are arranged. Next, the semi-cured material obtained with the slurry having a predetermined hardness is demolded and cut into a predetermined size. Next, the semi-cured body having a predetermined size is cured with high-temperature and high-pressure steam. Thereby, the ALC panel 30 is obtained. The ALC panel 30 may be subjected to various types of processing after being cured.

  Usually, the mold is arranged such that the length direction of the ALC panel 30 is a horizontal direction and the width direction of the ALC panel 30 is a vertical direction. When the formwork is arranged in this way, the slurry foams in the formwork and swells (expands and rises) in the width direction of the ALC panel 30. Since the open ends 24a and 24b of the tubular body 12 of the anchor fitting 10 welded to the reinforcing steel bar 34 are opened along the width direction of the ALC panel 30, the foaming and rising slurry is in the hollow space of the tubular body 12. Can pass through. Thereby, the foaming rise of a slurry is not prevented. Further, since the increase in foaming of the slurry is not hindered, it is possible to reduce the possibility that voids are generated in the ALC panel 30. Further, the strength reduction of the ALC panel 30 due to this can be suppressed.

  As a siliceous raw material used as the main raw material of the lightweight aerated concrete 32, a silica or quartz sand is common, as a calcareous raw material, quick lime and cement are common, and as a foaming agent, metallic aluminum is common. .

  The ALC panel 30 having the above configuration can be attached to the floor slab 50 using the mounting bracket 40 and the male screw member 60.

  As shown in FIGS. 2 and 3, the ALC panel 30 is attached to the floor slab 50 by first using the male screw member 60 to place the ALC panel 30 on the floor slab 50 on the short side face 30b of the ALC panel 30. Attach the mounting bracket 40 for mounting to

  The mounting bracket 40 includes a mounting portion 42 having a mounting surface 42a on which the ALC panel 30 is mounted, and a pair of leg portions 44a and 44b extending from both ends of the mounting portion 42. . The leg portions 44a and 44b are formed of bent pieces bent at a right angle with respect to the mounting portion 42, and their tips 46a and 46b are further bent at a right angle in a direction to open outward. The front ends 46 a and 46 b of the leg portions have a surface parallel to the placement surface 42 a of the placement portion 42, and can be welded to a metal plate 52 embedded in the floor slab 50 in advance. A through hole 48 into which the male screw portion 62 of the male screw member 60 can be inserted is formed at the center of the mounting portion 42, and the mounting bracket is provided between the male screw member 60 and the tubular body 14 of the anchor metal fitting 10. 40 can be fastened. The mounting bracket 40 can be manufactured, for example, by bending both ends of a metal plate and further drilling in the center of the plate.

  In order to attach the mounting bracket 40 to the short side edge surface 30b of the ALC panel 30, the male screw portion 62 material 60 is inserted into the through hole 48 of the mounting portion 42 of the mounting bracket 40 from the surface opposite to the mounting surface 42a. After inserting the male screw part 62, the male screw part 62 is screwed into the female screw hole 26 of the tubular body 14 of the anchor fitting 10. Thereby, the mounting bracket 40 is attached to the ALC panel 30 in a state where the mounting surface 42a of the mounting bracket 40 is in contact with the short side face 30b of the ALC panel 30.

  Next, the ALC panel 30 to which the mounting bracket 40 is attached is attached to the floor slab 50. A metal plate 52 is embedded in the floor slab 50 in advance, and the tips 46 a and 46 b of the legs of the mounting bracket 40 are welded to the metal plate 52. Although it does not specifically limit as a welding method, For example, a well-known arc welding method etc. are applicable.

  Since the ALC panel 30 is attached to the floor slab 50 via the attachment fitting 40, a gap S having the size of the attachment fitting 40 is generated between the ALC panel 30 and the floor slab 50. Further, since there is one anchor fitting 10 embedded in the ALC panel 30, the ALC panel 30 is attached to the floor slab 50 via one attachment fitting 40.

  After the tips 46a and 46b of the legs of the mounting bracket 40 are welded to the metal plate 52 of the floor slab 50, the gap S between the ALC panel 30 and the floor slab 50 is provided for waterproofing or the like as necessary. Sealing material may be filled. Examples of the material for the sealing material include polyurethane materials and modified silicone materials.

  The ALC panel 30 having the above configuration is suitably used as a wall material for buildings such as outer walls, partition walls, partition walls, and sleeve walls. In particular, it is suitable for an ALC panel used outdoors such as a wall separated from a neighboring door on a veranda in a high-rise building such as an apartment house or a sleeve wall in a passage around the entrance.

  According to the ALC panel 30 having the above-described configuration, the tubular body 12 of the anchor fitting 10 is welded to both the reinforcing bars of the pair of reinforcing bar mats 36a and 16b embedded in the ALC panel 30 at the welding surface portions 16a and 16b. At the same time, since the two main reinforcing bars 34a are applied to the welded surface portions 16a and 16b, they are firmly fixed between the reinforcing bar mats 36a and 16b. Then, both ends 24a and 24b of the tubular body 14 are supported on the peripheral surface of the tubular body 12 so as to be inserted into and fixed to the connecting surface portions 18a and 18b of the tubular body 12 firmly fixed between the reinforcing bar mats 36a and 16b. Therefore, the cylindrical body 14 is firmly supported by the tubular body 12. Therefore, the ALC panel 30 attached to the floor slab 50 via the attachment fitting 40 attached to the short side facet 30b of the ALC panel 30 by the cylindrical body 14 of the anchor fitting 10 and the male screw member 60 has high shear. Has pull strength.

  Therefore, the wall surface 30a of the ALC panel 30 may be subjected to high wind pressure when used as a wall separated from a neighboring door on a veranda in a high-rise building such as an apartment house or a sleeve wall in a passage around the entrance. Sufficient mounting strength to withstand this.

  Since the ALC panel 30 is attached to the floor slab 50 by the short side face 30b of the ALC panel 30, the attachment portion is difficult to see from the outside. Therefore, it is excellent in aesthetics. In particular, if the size of the mounting bracket 40 is made smaller than the size of the short side facet 30b of the ALC panel 30, the mounting bracket 40 is also difficult to see from the outside, so that the aesthetic appearance is not impaired by the mounting bracket 40.

  That is, in order to improve the aesthetics of the ALC panel 30, the ALC panel 30 is attached with the short side facet 30b of the ALC panel 30, but then the attachment strength is likely to be reduced. According to the ALC panel 30 having the above-described configuration, it is possible to achieve both mounting strength and aesthetics that have been difficult to achieve in the past.

  Further, the welded surface portions 16 a and 16 b of the tubular body 12 are welded to the sub-bar 34 b instead of the main bar 34 a of the reinforcing bar mat 36. The main reinforcement 34a mainly contributes to the strength reinforcement of the ALC panel 30, and since a cross-sectional defect due to welding to the main reinforcement 34a does not occur, a decrease in strength of the reinforcing reinforcement 34 is suppressed.

  Moreover, the tubular body 12 has a square tubular shape, and the welded surface portions 16a and 16b have a planar shape. Therefore, the main reinforcement 34a is applied over the entire length direction of the welding surface portions 16a, 16b, and the auxiliary reinforcement 34b is applied over the entire width direction of the welding surface portions 16a, 16b. Therefore, the tubular body 12 is firmly restrained by the main muscle and the accessory muscle. Thereby, the tubular body 12 can be more firmly fixed between the reinforcing bar mats 36a and 16b. Moreover, since the welding surface part is a flat surface, it is easy to weld with the secondary reinforcement 34b.

  Further, the anchor member 10 is embedded in the lower part of the ALC panel 30, and the ALC panel 30 is attached to the floor slab 50 via one attachment member 40. Further, a gap S having the size of the mounting bracket 40 is formed between the ALC panel 30 and the floor slab 50. Therefore, the attached ALC panel 30 is smoothly locked against the shaking of the building due to an earthquake or the like, and therefore has excellent follow-up performance against interlayer deformation. Thereby, since the shaking of the building due to an earthquake or the like can be absorbed, the ALC panel 30 can be prevented from being destroyed or dropped off due to the earthquake or the like. At this time, if the mounting bracket 40 is made of an elastically deformable material, or if the mounting surface 42a of the mounting bracket 40 is formed in a curved surface protruding upward, the building due to an earthquake or the like is further increased. Can absorb the shaking.

  Next, an ALC panel according to the second embodiment of the present invention will be described.

  As shown in FIG. 4, the ALC panel 130 according to the second embodiment includes a lightweight cellular concrete 32 formed into a plate wall shape, a reinforcing reinforcing bar 34 embedded in the lightweight cellular concrete 32 and reinforcing the concrete strength, An anchor fitting 110 that is embedded in the lightweight cellular concrete 32 together with the reinforcing steel bar 34 and attaches the ALC panel 130 to the floor slab 50 is provided.

  The ALC panel 130 according to the second embodiment is different from the ALC panel 30 according to the first embodiment in the configuration of the anchor fitting 110 and the arrangement of the anchor fitting 110 in the ALC panel 130. Since the configuration is the same as that of the ALC panel 30 according to the first embodiment, the description thereof is omitted.

  The tubular body 112 of the anchor fitting 110 has a width longer than the distance between the main bars 34 a of the reinforcing bar mat 36, but is shorter than the distance between the auxiliary bars 34 b of the reinforcing bar mat 36. That is, the length is shorter than the tubular body 12 of the anchor metal fitting 10 in the first embodiment. Therefore, the welded surface portions 116 a and 116 b are not applied to the accessory bars 34 b in the length direction of the ALC panel 130, and are applied to the two main bars 34 a in the width direction of the ALC panel 130. It is welded to the main reinforcement 34a. That is, one welding surface portion 116a of the tubular body 112 is welded to the two main reinforcing bars 34a of the one reinforcing bar mat 36a, and the other welding surface portion 116b of the tubular body 112 is welded to the two main reinforcing bars 34a of the other reinforcing bar mat 36b. It is welded to. Thereby, the tubular body 112 is welded to both the rebar mats 36a and 36b.

  The cylindrical body 114 of the anchor fitting 110 is arranged in the internal space of the tubular body 112 so that the axial direction thereof is parallel to the thickness direction of the ALC panel 130. Both ends 124a and 124b of the cylindrical body 114 are supported by the welding surface portions 116a and 116b of the tubular body 112, and one end portion 124a of the cylindrical body 114 is directed to the wall surface 130a of the ALC panel 130. The cylindrical body 114 and the male screw member 60 can be screwed together through the opened end portion 124a.

  Since the ALC panel 130 according to the second embodiment is configured as described above, when the ALC panel 130 is attached to the floor slab 50, for example, an L-shaped angle steel material 54 and a progress plate 56 are used. Specifically, as shown in FIGS. 4 and 5, first, the L-shaped angle steel material 54 is fixed to the floor slab 50 with the horizontal plate 54a. Next, the Inazuma plate 56 is temporarily fixed to the ALC panel 130 using the male screw member 60. At this time, the male screw portion 62 of the male screw member 60 is screwed into the cylindrical body 114 of the ALC panel 130 through the through hole 56 a formed in the Inazuma plate 56. Next, the ALC panel 130 is erected on the horizontal plate 54 a of the L-shaped angle steel material 54 to determine the mounting position. Next, a lightning plate 56 is welded to a vertical plate 54 b erected from the horizontal plate 54 a of the L-shaped angle steel material 54. Accordingly, the ALC panel 130 is attached to the floor slab 50 via the L-shaped angle steel material 54 and the Inazuma plate 56 on the wall surface 130 a of the ALC panel 130.

  Also in the ALC panel 130 according to the second embodiment, the tubular body 112 of the anchor metal fitting 110 is welded to both the reinforcing bars of the pair of reinforcing bar mats 36a and 36b embedded in the ALC panel 130 at the welding surface portions 116a and 116b. In addition, since the two main reinforcing bars 34a are applied to the welded surface portions 116a and 116b, they are firmly fixed between the reinforcing bar mats 36a and 36b. Then, both ends 124a and 124b of the tubular body 114 are supported on the peripheral surface of the tubular body 112 so as to be inserted into and fixed to the connecting surface portions 118a and 118b of the tubular body 112 firmly fixed between the reinforcing bar mats 36a and 36b. Therefore, the cylindrical body 114 is firmly supported by the tubular body 112. Therefore, the ALC panel 130 attached to the floor slab 50 via the L-shaped angle steel 54 and the Inazuma plate 56 attached to the wall surface 130a of the ALC panel 130 by the cylindrical body 114 of the anchor fitting 110 and the male screw member 60 is High anchor pull-out strength.

  Therefore, when used as a wall separated from a neighboring door on a veranda in a high-rise building such as an apartment house or a sleeve wall in a passage around the entrance, the wall surface 130a of the ALC panel 130 may receive a high wind pressure. Sufficient mounting strength to withstand this.

  Also, one anchor fitting 110 is embedded in the ALC panel 130, and the ALC panel 130 is attached to the floor slab 50 at one place. Therefore, the attached ALC panel 130 can be locked against shaking of the building due to an earthquake or the like. In this structure, in order to lock the ALC panel 130, for example, as shown in FIG. 4, the ALC panel 130 is placed between the lower short side face 130 b of the ALC panel 130 and the horizontal plate 54 a of the L-shaped angle steel material 54. A flat locking spacer 58 for forming a gap between the ALC panel 130 and the floor slab 50 may be interposed at the center position in the width direction of the panel 130. In this structure, by interposing the locking spacer 58, the ALC panel 130 is smoothly locked against the shaking of the building due to an earthquake or the like, and has excellent follow-up performance against interlayer deformation. Thereby, since the shaking of the building due to an earthquake or the like can be absorbed, the ALC panel 130 can be prevented from being destroyed or dropped off due to the earthquake or the like.

  EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited thereto.

(Configuration of anchor bracket)
The anchor metal fittings A to N used in the present embodiment have the configurations shown in FIGS. The anchor bracket has a width W, a length L, and a thickness t. The width, length, and thickness of the anchor bracket are the dimensions in the width direction, the length direction, and the thickness direction of the ALC panel, respectively. is there.

・ Anchor bracket A
As shown in FIG. 6, it is comprised by the cylindrical tube and square tube in which the internal thread was formed in the internal peripheral surface, and the both ends of the cylindrical tube are weld-fixed by a pair of surface of the square tube.
・ Anchor bracket B
As shown in FIG. 7, a rectangular nut is formed by a high nut and a square tube, and a square through-hole through which ALC slurry can flow is formed on the front side surface and the back side surface of the square tube. The front surface and the back surface of the square tube are connected by a plate material below the rectangular through hole, and both ends of the high nut are welded and fixed to the bottom surface of the square tube and the plate material.

・ Anchor brackets C to F, H, K, L
As shown in FIGS. 8 to 11, 13, 16, and 17, the high nut and the bent plate material are configured, and the peripheral surface of the high nut is welded and fixed to the bent plate material along the length direction. ing. Some plate materials have through holes through which the ALC slurry can flow.
・ Anchor brackets G and I
As shown in FIGS. 12 and 14, it is constituted by a cylindrical tube having an internal thread formed on the inner peripheral surface and a bent plate material, and the peripheral surface of the high nut is bent along the length direction. Is fixed by welding.
・ Anchor brackets J and M
As shown in FIGS. 15 and 18, the cylindrical tube is formed by a cylindrical tube having an internal thread formed on the inner peripheral surface and a pair of bent plate members, and both ends of the cylindrical tube are paired so as to bridge the pair of plate members. It is fixed to the plate by welding.
・ Anchor bracket N
As shown in FIG. 19, it is comprised by the high nut and the board | plate material bent into the U-shape, and only one end of the high nut is weld-fixed to the bottom face of the board | plate material.

(Production of ALC panel)
Reinforcement reinforcing bars were assembled in a lattice shape to produce a reinforcing bar mat, and the two reinforcing bar mats were connected by a spacer to form a cage shape. Next, an anchor fitting was welded to a predetermined position of the reinforcing reinforcing bar. Next, silica, quicklime, cement, foaming agent, additive, and water as raw materials for lightweight cellular concrete were kneaded with a mixer at a predetermined mixing ratio to prepare a slurry. Next, after reinforcing steel bars to which the anchor fittings were welded were placed in the mold, slurry was injected into the mold. When the slurry had a predetermined hardness, the obtained semi-cured product was demolded and cut into a predetermined size. Next, the obtained semi-cured product was cured with high-temperature and high-pressure steam. Thereby, an ALC panel was produced.

  The size of the ALC panel was 2490 × 600 × 100 mm. Further, the distance between the main reinforcing bar and the main reinforcing bar at the position where the anchor metal fitting is welded is 100 mm, and the distance between the auxiliary reinforcing bar and the auxiliary reinforcing bar is 140 mm.

  In the ALC panel, the anchor metal fitting is placed between the pair of reinforcing bar mats at the center of the ALC panel in the width direction and near the short edge of the short side of the ALC panel at the end in the length direction of the ALC panel. A female screw hole is opened in the side edge, the part shown in the front view of the anchor metal fitting faces the front of the ALC panel, the part shown in the side view faces the side of the ALC panel, and the part shown in the plan view shows the ALC panel It was arranged to face the up and down direction.

  In addition, in the anchor of the ALC panel, when the anchor fitting is arranged so that the female screw hole is opened in the short side face, the mounting strength of the ALC panel is the anchor pulling strength of the anchor, and the female screw hole is formed on the wall surface. When the anchor metal fittings are arranged so as to open, the attachment strength of the ALC panel is the pullout strength of the anchor. Since the pulling strength is larger than the shear pulling strength, the shear pulling strength test was performed in this example. From the test results, it is presumed that an anchor fitting excellent in shear pullout strength is also excellent in pullout strength.

(Examples 1-3)
One anchor metal fitting A having the size shown in Table 1 was used. Two main reinforcements and two auxiliary reinforcements were applied to the front side surface and the back side surface of the square tube of the anchor metal fitting A, respectively, and two auxiliary reinforcements were welded to both sides.

Example 4
One anchor metal fitting B having a size shown in Table 1 was used. Two main reinforcements and two auxiliary reinforcements were applied to the front side surface and the back side surface of the square pipe of the anchor metal fitting B, respectively, and two auxiliary reinforcements were welded to both sides.

(Example 5)
One anchor metal fitting A having the size shown in Table 1 was used. Only two main bars were applied to the front side surface and the back side surface of the square pipe of the anchor metal fitting A, and the two main bars were welded to both sides of each.

(Comparative Examples 1-2)
One anchor fitting C having the size shown in Table 1 was used. Two accessory bars were welded only to the back side surface of the plate of the anchor fitting C.

(Comparative Example 3)
The same procedure as in Comparative Example 1 was performed except that two anchor fittings C having the sizes shown in Table 1 were used.

(Comparative Example 4)
One anchor fitting D having a size shown in Table 1 was used. Two accessory bars were welded only to the rear surface of the plate of the anchor metal D.

(Comparative Examples 5-6)
One anchor metal fitting E to F having the size shown in Table 1 was used. Two main reinforcing bars and two auxiliary reinforcing bars are applied to the side end of the front side surface and the side of the rear side surface of the plate of the anchor metal fittings E to F, respectively. Two accessory bars were welded to the side edges of the side surfaces.

(Comparative Examples 7 to 11)
One anchor metal fitting G to J having the size shown in Table 1 was used. The upper and lower ends and the rear surface of the front surface are arranged such that two main bars and two auxiliary bars are applied to the upper and lower ends of the front surface and the upper and lower surfaces of the plate surface of the anchor fittings G to J, respectively. Two accessory bars were welded to the upper and lower ends of the side surface.

(Comparative Examples 12-15)
One anchor fitting K to N having the size shown in Table 1 was used. Only two main bars are applied to the side edge of the front surface and the side of the back surface of the plate of the anchor metal fittings K to N, respectively. Two main bars were welded to each side end.

About the ALC panel which concerns on an Example and a comparative example, the shear pulling strength was measured in accordance with the following measuring method. In addition, about Comparative Examples 1-3, since the anchor metal fitting was welded only to the reinforcing bar mat on one side, the maximum load was also compared between different displacement directions (vertical direction upper side and lower side). Assuming that a wind load of a maximum of 4000 N per 1 m ^{2 of} ALC panel is applied, the strength required for outdoor use is 4000 N / sec because the ALC panel width of the test specimen is 0.6 m and the length is 3 m. m ² × 0.6 m × 3.0 m ÷ 2 = 3600N. Therefore, the allowable load of the ALC panel was 3600N. Moreover, the safety factor shown in Table 1 is represented by the ratio of the maximum load to the allowable load. Therefore, it can be said that the higher the safety factor, the better the safety. In Comparative Examples 1 to 3, the maximum positive pressure load (upper data) and the negative maximum load (lower data) were average values obtained from three tests. In the other comparative examples and examples, the maximum load was an average value obtained by three tests on the side of the reinforcing steel bar where the covering of the ALC base material is small.

(Measurement method of shear pull-out strength)
The ALC panel 1 was horizontally arranged on the test steel frame 2 and the ALC panel 1 was fixed by sandwiching the wall surface 1a at a position 300 mm from the end of the ALC panel 1. Next, the metal plate 4 was attached to the short side facet 1 b of the ALC panel 1 using the bolt 3. Next, the metal plate 4 was displaced in the vertical direction (arrow direction) using the hydraulic jack 5. The maximum load at this time was used as an index of the shear pulling strength.

  In Comparative Examples 1 to 3, since the anchor metal fitting was welded only to the reinforcing bar mat on one side, a large difference was observed in the maximum load between different displacement directions. The maximum load in the displacement direction with the smaller value was less than the allowable load. In Comparative Example 3, since two anchor fittings are used per panel, the ALC panel is difficult to lock.

  In Examples 1 to 4 and Comparative Examples 5 to 11, the anchor metal fittings are applied to two main reinforcing bars and two auxiliary reinforcing bars of the reinforcing bar mat, and are welded to two auxiliary reinforcing bars of the reinforcing bar mats on both sides. Therefore, there is no significant difference in the maximum load due to the difference in displacement direction. In Comparative Example 4, the anchor fitting is applied to two main reinforcing bars and two auxiliary reinforcing bars of the reinforcing bar mat, but is welded to two auxiliary reinforcing bars of the reinforcing bar mat on one side.

  It was confirmed that Examples 1 to 4 were superior in shear pull-out strength as compared with Comparative Examples 4 to 11. In particular, in any Example, it turned out that a maximum load is over 6000 N and a safety factor exceeds 1.8. In an Example, since it exceeds a permissible load in outdoor use, it can be said that it is suitable for outdoor use.

  In Example 5 and Comparative Examples 12 to 15, the anchor fitting is applied only to the two main reinforcing bars of the reinforcing bar mat, and is welded to the two main reinforcing bars of the reinforcing bar mats on both sides. It was confirmed that Example 5 was superior in shear pullout strength as compared with Comparative Examples 12-15. In particular, in Example 5, it was found that the maximum load was over 6000 N and the safety factor exceeded 1.8. Therefore, in an Example, since it exceeds a permissible load in outdoor use, it can be said that it is suitable for outdoor use.

  Thus, according to the ALC panel according to the embodiment, it is confirmed that the ALC panel has sufficient shear pull-out strength that can withstand outdoor use even when it is attached to the floor slab with the short edge of the ALC panel. did it.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

  For example, in the above-described embodiment, the tubular bodies 12 and 112 have a rectangular tubular shape. However, the tubular bodies 12 and 112 are not limited to this, and may be any tubular shape that can support both ends of the tubular body on the peripheral surface thereof. Further, it may be a round tube, or may be a rectangular tube other than an elliptical tube or a square tube. Moreover, the edge part of a cylindrical body may protrude outside the connection surface part or welding surface part of a tubular body.

  Moreover, in the said embodiment, although the example in which the two main reinforcement | strength 34a is applied to the welding surface parts 16a, 16b, 116a, 116b of the tubular bodies 12 and 112 is shown, the main reinforcement 34a or the auxiliary reinforcement 34b is welded. Needless to say, the welded surface portion may have such a width that three or more main bars 34a are applied. Also by this, the outstanding shear pullout strength similar to the ALC panels 30 and 130 according to the above embodiment can be obtained. Similarly, the welded surface portion may have a length such that three or more accessory bars 34b are applied.

  The arrangement of the anchor fitting in the ALC panel is not particularly limited, and the anchor fitting may be located at a position other than the center position in the width direction of the ALC panel. Two or more anchor fittings may be provided for one ALC panel.

  Further, in the configuration in which the main reinforcing bar and the secondary reinforcing bar are applied to the welded surface portion of the tubular body, the opening end portion of the cylindrical body is not limited to the configuration in which the opening end portion of the cylindrical body opens to the short side edge surface of the ALC panel. Instead, the opening end of the cylindrical body may be open to the wall surface of the ALC panel. Further, in the configuration in which only the main reinforcing bar is applied to the welded surface portion of the tubular body, the opening end portion of the tubular body is not limited to the opening of the wall surface of the ALC panel as in the ALC panel 130. The opening end may be configured to open on the short edge of the ALC panel.

DESCRIPTION OF SYMBOLS 10 Anchor metal fitting 12 Tubular body 14 Cylindrical body 26 Female screw hole 30 ALC panel 30b Short edge face 34 Reinforcing bar 34a Main bar 34b Secondary bar 36 Reinforcing bar mat

Claims (7)

A plurality of main bars arranged along the length direction of the ALC panel and a plurality of auxiliary bars arranged along the width direction of the ALC panel are combined in a lattice shape, and are formed on the wall surface of the ALC panel. An ALC panel anchor fitting embedded in the ALC panel together with a pair of lattice-like reinforcing bar mats embedded in the ALC panel,
The reinforcing bar mat has a width equal to or greater than the distance between the main reinforcing bars, and is disposed between the pair of lattice reinforcing bar mats at a position in the width direction where two or more of the main reinforcing bars are applied. A tubular body to be welded;
A cylindrical body having a female screw hole for attaching the ALC panel to a floor slab, and having an open end of the female screw hole opened on one surface of the ALC panel;
An anchor fitting for an ALC panel, wherein the cylindrical body is disposed in an internal space of the tubular body, and both ends thereof are supported by a peripheral surface of the tubular body.   The tubular body has a length equal to or greater than the distance between the secondary reinforcing bars of the reinforcing bar mat, and the circumferential surface thereof is welded to two or more secondary reinforcing bars of the pair of reinforcing bar mats. The anchor metal fitting for ALC panels according to claim 1.   The tubular body is formed of a square tube, a pair of opposed surfaces of the square tube are welded to the pair of rebar mats, and both ends of the cylindrical body are supported by another pair of opposed surfaces of the square tube. The anchor fitting for an ALC panel according to claim 1 or 2, wherein the anchor fitting is an item.   The ALC according to any one of claims 1 to 3, wherein the square tube has a length of 50 to 180 mm, a width of 80 to 200 mm, a thickness of 30 to 110 mm, and a plate thickness of 1.5 to 3.5 mm. Anchor bracket for panels.   An ALC panel in which the anchor for ALC panel according to claim 1 is embedded in the ALC panel.   The ALC panel according to claim 5, wherein an opening end of the female screw hole of the cylindrical body is opened on a short side facet or wall surface of the ALC panel.   The ALC panel according to claim 5 or 6, wherein the ALC panel has a length of 1500 to 3500 mm, a width of 300 to 700 mm, and a thickness of 75 to 150 mm.

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