JP5313593B2 - Lightweight cellular concrete panel - Google Patents

Description

  The present invention relates to a lightweight cellular concrete panel (hereinafter referred to as “ALC panel”) in which a reinforcing bar mat composed of main and auxiliary bars and a net-like reinforcing member such as a metal lath are embedded.

  2. Description of the Related Art Conventionally, there has been proposed an ALC panel in which a reinforcing bar mat composed of main bars and auxiliary bars and a net reinforcing member such as a metal lath are embedded.

  ALC panels used for building walls, floors, or roofs often have large and small through holes and openings for facilities such as water supply and drainage, air conditioning and ventilation. On the other hand, a large number of main bars and auxiliary bars are embedded inside the ALC panel in order to develop the bending strength of the panel, and if the reinforcing bars are cut by drilling through holes for equipment piping, Since there is a possibility that the bending strength is lowered, it is difficult to provide a large number or large holes at arbitrary positions.

  In addition, in an ALC panel in which a reinforcing bar mat composed of main bars and auxiliary bars is embedded, main bars having a diameter of about 4 mm to 9 mm are arranged at intervals of 50 mm or more in the longitudinal direction of the ALC panel in order to develop a large panel bending strength. In general, iron wires having a diameter of about 3 mm to 5 mm are arranged at a pitch of 200 mm to 600 mm in the short direction of the ALC panel. As mentioned above, since reinforcing bars are unevenly distributed inside the ALC panel reinforced with iron wire, it cannot be inadvertently cut and processed, and it is made by order production according to dimensions and required strength, and it takes delivery time. There was a problem. On the other hand, at the construction site, there was a current situation that a lot of on-site alignment processing occurs.

  ALC panels that solve these problems are proposed in Japanese Patent Application Laid-Open No. 2007-107204 (Patent Document 1) and Japanese Patent No. 3574721 (Patent Document 2). In order to solve the problem that the base material on the back side is peeled off when the drill blade is cut through when drilling the ALC panel, an ALC panel in which a reinforcing mesh made of reinforcing bars is stretched with a wire mesh is disclosed in Japanese Utility Model Laid-Open No. 06-077842. (Patent Document 3).

JP 2007-107204 A Japanese Patent No. 3574721 Japanese Utility Model Publication No. 06-078432 Japanese Utility Model Publication No. 63-007619

  In the ALC panel of Patent Document 1 described above, the secondary muscles (lateral muscles) are embedded in the set openable range at a pitch of 300 mm to 450 mm. Therefore, there is a possibility of cutting the secondary muscles (lateral muscles) during the drilling operation. Compared with the case where the hole is drilled in the non-muscle part, the workability is lowered and the drill blade is consumed quickly.

  In addition, the ALC panel of Patent Document 3 does not consider the difference in tensile rigidity (or bending rigidity) of the net-like reinforcing material between the length direction and the width direction of the ALC panel. Since it is about 450 mm-600 mm, there existed a problem that the range (openable range) which can be drilled without cut | disconnecting a reinforcing bar could not be taken large.

  In addition, the ALC panel of Patent Document 4 does not take into consideration the difference in tensile rigidity (or bending rigidity) of the mesh reinforcing material between the length direction and the width direction of the ALC panel, and the auxiliary line in the width direction of the ALC panel. In addition, since the tensile strength (or bending rigidity) of the mesh reinforcing member in the width direction of the ALC panel is not sufficient, it is difficult to increase the diameter of the main bar, and the main bar has a wire diameter of 1.6 mm to 3.2 mm. Was used. As a result, it was difficult to provide an ALC panel having a high bending strength.

  The present invention solves the above-mentioned problems, and its object is to reinforce by considering the difference in tensile rigidity (or bending rigidity) between the long direction and the short direction of a mesh reinforcing member such as a metal lath. It is an object of the present invention to provide a lightweight cellular concrete panel that can take a wide range (openable area) where holes can be drilled without cutting the lines. Another object is to provide a lightweight cellular concrete panel that has sufficient bending strength, is uniformly reinforced, and can be processed such as cutting.

In order to achieve the above object, the first configuration of the lightweight cellular concrete panel according to the present invention is:
In a lightweight cellular concrete panel in which a reinforcing reinforcing mat and a net-like reinforcing member made of anisotropic metal lath or expanded metal are embedded, a pair of at least two main reinforcing bars arranged in the longitudinal direction of the lightweight cellular concrete panel. The reinforcing reinforcing material mat is embedded, and the mesh reinforcing member made of the anisotropic metal lath or expanded metal is arranged in the short direction of the lightweight cellular concrete panel in the long direction, and in the short direction of the lightweight cell. It is characterized by being arranged and buried in the longitudinal direction of a concrete panel.

The second configuration of the lightweight cellular concrete panel according to the present invention is as follows:
In a lightweight cellular concrete panel in which a reinforcing reinforcing mat and a net-like reinforcing member made of anisotropic metal lath or expanded metal are embedded, in the longitudinal direction of the lightweight cellular concrete panel, at least two main reinforcing bars disposed in the longitudinal direction; A pair of reinforcing bar mats composed of at least three auxiliary bars arranged in the short direction of the lightweight cellular concrete panel is embedded, and the net-like reinforcing member made of anisotropic metal lath or expanded metal is in the long direction. Is disposed in the short direction of the lightweight cellular concrete panel, and the short direction is disposed in the longitudinal direction of the lightweight cellular concrete panel.

The third configuration of the lightweight cellular concrete panel according to the present invention is as follows.
In the second configuration, the reinforcing bar mat is formed by stretching a net-like reinforcing member made of anisotropic metal lath or expanded metal on the main bar, with the auxiliary bar being omitted only by the main bar. Features.

  The fourth structure of the lightweight cellular concrete panel according to the present invention is characterized in that, in the second and third structures, the diameter of the main bar is 4 mm to 9 mm.

  According to the lightweight cellular concrete panel according to the present invention, a reticulated reinforcing member having a different direction is embedded in the lightweight cellular concrete panel, and the long direction with a large tensile rigidity (or bending rigidity) is set to the short side of the lightweight cellular concrete panel. By arranging in the direction, the mesh-like reinforcing member can bear the role of the secondary reinforcement (transverse) of the reinforcement mat, so that the number of secondary reinforcement (transverse) can be reduced or the diameter of the reinforcement can be reduced. The accessory muscles can be omitted, and the spacing between the accessory muscles can be increased to increase the openable area.

  Thereby, it is less likely that the reinforcing bars are cut at the time of drilling work, so that workability can be improved and wear of the drill blade can be prevented.

An embodiment of a lightweight cellular concrete panel according to the present invention will be specifically described with reference to the drawings. FIG. 1 is an exploded perspective view showing the configuration of the lightweight cellular concrete panel according to the present invention, FIG. 2 is a plan view and a cross-sectional view showing the configuration of the lightweight cellular concrete panel according to the present invention, and FIG. 3 is the lightweight cellular concrete according to the present invention. FIG. 4 is a plan view and a cross-sectional view showing still another configuration of the lightweight cellular concrete panel according to the present invention, and FIG. 5 is still another configuration of the lightweight cellular concrete panel according to the present invention. FIG. 6 is a plan view and a cross-sectional view showing the configuration of a lightweight cellular concrete panel in which a reinforcing bar mat is formed by omitting the secondary bars and stretching a net-like reinforcing member around the main bars.

1 to 6, 1 is a lightweight cellular concrete panel (hereinafter referred to as “ALC panel”), and two main bars 2 parallel to the longitudinal direction of the ALC panel 1 (left and right direction in FIGS. 2 and 4). Reinforcement in which five sub-bars 3 are disposed in parallel to the short direction (vertical direction in FIGS. 2 and 4) of the ALC panel 1 while intersecting (orthogonal) the main bar 2 Two sets of streak mats 4 are arranged in parallel along the panel surface of the ALC panel 1, and a planar or wave-shaped net-like reinforcing member 5 made of metal lath or expanded metal is parallel to the panel surface of the ALC panel 1. 2 corresponding to 2 and embedded in the ALC panel 1.

  The long direction (vertical direction in FIGS. 2 and 4) of the mesh reinforcing member 5 is arranged in the short direction (vertical direction in FIGS. 2 and 4) of the ALC panel 1, and the short direction of the mesh reinforcing member 5 is (The horizontal direction in FIGS. 2 and 4) is arranged in the longitudinal direction of the lightweight cellular concrete panel (the horizontal direction in FIGS. 2 and 4).

The mesh reinforcing member 5 made of metal lath or expanded metal has different tensile rigidity (or bending rigidity) in the long direction and the short direction, and the long direction (vertical direction in FIGS. 2 and 4) of the mesh reinforcing member 5 is short. A tensile rigidity (or bending rigidity) larger than the eye direction (left-right direction in FIGS. 2 and 4) can be obtained. Considering the difference in the tensile stiffness (or bending stiffness) between the long and short directions of the mesh reinforcing member 5 made of metal lath or expanded metal , the longer direction of the tensile strength (or bending stiffness) is the shorter side of the ALC panel 1. By using it in the direction (width direction of ALC panel 1), the number of secondary muscles (lateral muscles) 3 can be reduced, the muscle diameter can be reduced, and the spacing pitch between the secondary muscles 3 can be increased to allow opening. A large area can be taken.

  Two of the accessory bars 3 arranged on the reinforcing bar mat 4 are provided in the vicinity of both end portions in the longitudinal direction (length direction) of the ALC panel 1 and in the central portion in the longitudinal direction (length direction) of the ALC panel 1. It is desirable to arrange one. By placing two auxiliary bars 3 at the end of the ALC panel 1 in the length direction, the main bar 2 is sufficiently fixed to the ALC (lightweight cellular concrete), and the attachment strength of the fastener attached to the end of the ALC panel 1 Can be secured. Further, by arranging the remaining one in the central portion in the longitudinal direction of the ALC panel 1 and arranging the secondary muscles 3 symmetrically as viewed from the central portion in the longitudinal direction of the ALC panel 1, the openable range can be widened. In addition, since the reinforcing bar arrangement in the longitudinal direction and the short direction of the ALC panel 1 is symmetrical, the usability of the longitudinal direction and the short direction is eliminated with respect to the openable range, and the cutting of the reinforcing bars due to misuse is prevented. Can do.

  In the present embodiment, on the plan view of the ALC panel 1, the net-like reinforcing member 5 is embedded in the entire range where the reinforcing bar mat 4 is embedded. However, the present invention is not limited to this configuration. The portion in which the net-like reinforcing member 5 is embedded may be only the lattice portion of the reinforcing bar mat 4 in the openable range.

  It should be noted that two or more main bars 2 of each reinforcing bar mat 4 may be arranged in parallel to the longitudinal direction of the ALC panel 1, and three or more auxiliary bars 3 are arranged in parallel to the short direction of the ALC panel 1. That's fine. FIG. 4 shows a reinforcing bar 6 disposed and fixed in parallel with the main bar 2 between the auxiliary bars 3 at both ends in the longitudinal direction of the ALC panel 1. By arranging a fastener portion for attaching the ALC panel 1 to the building frame in a portion surrounded by the reinforcing bars 6 and the auxiliary bars 3, it is possible to develop sufficient strength against earthquakes and wind loads. .

  1 and FIG. 2 show an example of a case where the mesh-like reinforcing members 5 are arranged apart from each other between the pair of reinforcing bar mats 4, and FIG. 3A shows the inner surface side of each of the pair of reinforcing bar mats 4. FIG. 3B shows an example in which the mesh reinforcing member 5 is fixed and arranged. In FIG. 3B, the mesh reinforcing member 5 is fixed to the inner surface side of one of the reinforcing bar mats 4. An example of the arrangement is shown.

  FIG. 4 shows an example of the case where the mesh reinforcing member 5 is fixed and arranged on the outer surface side of one reinforcing bar mat 4 of the pair of reinforcing bar mats 4, and FIG. FIG. 5B shows an example in which the planar mesh reinforcing member 5 disposed between the reinforcing bar mats 4 is divided into two in the longitudinal direction of the ALC panel 1 and overlapped at the center portion. An example of the case where the net-like reinforcing member 5 that is spaced apart between the pair of reinforcing bar mats 4 and is bent or curved zigzag in the longitudinal direction of the ALC panel 1 is divided into two in the longitudinal direction of the ALC panel 1. Indicates.

As the mesh reinforcing member 5 , a metal lath or expanded metal can be used. The thickness of the metal lath or the expanded metal may be determined in consideration of the reinforcing effect and workability at the time of drilling, and is preferably about 0.6 mm to 1.2 mm. The mesh size may be determined in consideration of the adhesion of the mesh reinforcing member to the ALC (lightweight cellular concrete) base material and the interval between the through holes and the openings, and is preferably about 10 mm to 60 mm.

  When the mesh reinforcing member 5 is a metal lath, a flat lath such as No. 3, No. 4 or a corrugated lath such as No. 1, No. 2 can be adopted. The eye dimension (diamond major axis) is 26 mm to 32 mm, and the eye dimension (diamond minor axis) in the short direction is 13 mm to 16 mm.

  According to the above configuration, since the inside of the ALC panel 1 can be uniformly reinforced by the mesh-like reinforcing member 5, it is possible to increase the spacing pitch of the main bars 2 and the spacing pitch of the accessory bars 3.

In addition, the mesh reinforcing member 5 made of metal lath or expanded metal is arranged in the short direction of the ALC panel 1 in the long direction in which the tensile rigidity (or bending rigidity) of the mesh reinforcing member 5 is large. Since the role of the muscle 3 can be borne, the number of the secondary muscles 3 can be reduced or the muscle diameter can be reduced, and the pitch between the secondary muscles 3 can be increased to increase the openable area. I can do it.

  In addition, since the reinforcing bar mat 4 and the mesh reinforcing member 5 are combined, most of the bending rigidity in the longitudinal direction of the ALC panel 1 is borne by the main bar 2 of the reinforcing bar mat 4, so that the wire diameter of the mesh reinforcing member 5 is reduced. It can be made thin, the drilling operation of the ALC panel 1 at the mesh reinforcing member 5 is easy, and wear of the drill blade can be prevented.

  Thereby, it is possible to perform drilling without cutting the rebar, and it is possible to improve the workability of the drilling work and prevent wear of the drill blade.

In the ALC panel 1 shown in FIG. 6, in the ALC panel 1 in which reinforcing bars and the net-like reinforcing member 5 are embedded, at least two or more are arranged in parallel to the longitudinal direction of the ALC panel 1 (left and right direction in FIG. 6A). The reinforcing main mat 2 and a reinforcing bar mat 4 formed by stretching a net-like reinforcing member 5 to the main reinforcing bar 2 are embedded, and the long direction of the net-like reinforcing member 5 is the short direction of the ALC panel 1 (FIG. 6). The vertical direction of the mesh reinforcing member 5 is arranged in the longitudinal direction of the ALC panel 1 (left and right direction in FIG. 6A).

  In this embodiment, the main muscle 2 has an outer diameter of 4 mm to 9 mm. Normally, in the thick ALC panel 1, the outer diameter of the main muscle 2 is as large as about 4 mm to 9 mm, a large tensile force acts on the main muscle 2, and the auxiliary muscle 3 bears the fixation of the main muscle 2. In the present embodiment, there is no accessory reinforcing bar 3, and the tensile rigidity (or bending rigidity) of the mesh reinforcing member 5 in the panel width direction is the force acting on the main reinforcing bar 2 and the outer diameter diameter of the main reinforcing bar 2. Depending on the situation, sufficient rigidity is required. If the mesh reinforcing member having a large tensile rigidity (or bending rigidity) is arranged so that the long direction of the mesh reinforcing member is the width direction of the ALC panel 1, this problem can be solved without cost.

  When the outer diameter of the main reinforcement 2 is smaller than 4 mm, the force acting on the main reinforcement 2 is small, so that the tensile rigidity required for the mesh reinforcing member 5 can be small. As a result, the mesh direction of the mesh reinforcing member 5 is limited. The need is small. On the other hand, the maximum diameter of the main reinforcing bar 2 to be used is preferably 9 mm for reasons such as balancing with the strength of the lightweight cellular concrete part and ensuring the cover size of the main reinforcing bar 2. On the other hand, if the diameter of the main reinforcement 2 exceeds 9 mm, the thickness of the mesh reinforcing member 5 increases, so that the cutting operation becomes difficult and the cost is not preferable.

As the mesh reinforcing member 5, a metal lath or expanded metal can be used. The thickness of the metal lath or the expanded metal may be determined in consideration of the appropriateness with the force acting on the main reinforcement 2, the reinforcing effect, and the workability of processing such as cutting. The size of the mesh may be determined in consideration of the adhesion of the mesh reinforcing member 5 to the ALC (lightweight cellular concrete) base material, the interval between through holes and openings, and workability of processing such as cutting.

  When the net-like reinforcing member 5 is an expanded metal, the strand thickness is 1.0 mm to 2.3 mm, the mesh long dimension is 30.5 mm to 76.2 mm, and the short dimension is about 12 mm to 34 mm. it can.

  According to the above configuration, the functions of the accessory muscles 3 described above are arranged such that the long direction is the short direction of the ALC panel 1 (the vertical direction in FIG. 6A), and the short direction is the long side of the ALC panel 1. It can be replaced by the mesh reinforcing member 5 arranged in the direction (left and right direction in FIG. 6A), and the accessory muscle 3 can be eliminated. Accordingly, the ALC panel 1 is uniformly reinforced in the longitudinal direction (left and right direction in FIG. 6A), and the cutting position is not limited, and the ALC panel 1 is cut in the longitudinal direction (left and right direction in FIG. 6A). (Length cutting) is processing.

  As a result, the inventory can be cut and shipped to the order size, so that the delivery time can be shortened compared to conventional order production.

  Further, by arranging the long direction of the mesh reinforcing member 5 having a large tensile rigidity (bending rigidity) in the short direction of the ALC panel 1, it is possible to use the main reinforcement 2 having an outer diameter of 4 mm to 9 mm. The ALC panel 1 having sufficient bending strength can be provided.

As an application example of the present invention, the present invention can be applied to a lightweight cellular concrete panel in which a reinforcing bar mat composed of main bars and auxiliary bars and a mesh reinforcing member of metal lath or expanded metal is embedded.

It is a disassembled perspective view which shows the structure of the lightweight cellular concrete panel which concerns on this invention. It is the top view and sectional drawing which show the structure of the lightweight cellular concrete panel which concerns on this invention. It is sectional drawing which shows the other structure of the lightweight cellular concrete panel which concerns on this invention. It is the top view and sectional drawing which show other structure of the lightweight cellular concrete panel which concerns on this invention. It is sectional drawing which shows the further another structure of the lightweight cellular concrete panel which concerns on this invention. It is the top view and sectional drawing which show the structure of the lightweight cellular concrete panel by which the reinforcement reinforcement mat formed by extending | stretching a net-like reinforcement member with respect to the main reinforcement , omitting a secondary reinforcement .

DESCRIPTION OF SYMBOLS 1 ... ALC panel 2 ... Main reinforcement 3 ... Secondary reinforcement 4 ... Reinforcement reinforcement mat 5 ... Reticulated reinforcement member 6 ... Reinforcement reinforcement

Claims (4)

In a lightweight cellular concrete panel in which a reinforcing reinforcing mat and a net-like reinforcing member made of anisotropic metal lath or expanded metal are embedded,
In the longitudinal direction of the lightweight cellular concrete panel, a pair of reinforcing bar mats composed of at least two main reinforcing bars are embedded , and the anisotropic reinforcing metal lath or expanded metal net-like reinforcing member is long. A lightweight cellular concrete panel characterized in that a direction is arranged in a short direction of the lightweight cellular concrete panel, and a minor direction is arranged in the longitudinal direction of the lightweight cellular concrete panel. In a lightweight cellular concrete panel in which a reinforcing reinforcing mat and a net-like reinforcing member made of anisotropic metal lath or expanded metal are embedded,
A pair of reinforcing bar mats comprising at least two main bars arranged in the longitudinal direction of the lightweight cellular concrete panel and at least three auxiliary bars arranged in the lateral direction of the lightweight cellular concrete panel. A mesh-like reinforcing member made of an anisotropic metal lath or expanded metal, which is embedded, is arranged in the long direction in the short direction of the lightweight cellular concrete panel and in the short direction in the longitudinal direction of the lightweight cellular concrete panel. A lightweight cellular concrete panel characterized by being embedded . 3. The reinforcing bar mat according to claim 2, wherein the reinforcing bar mat is constituted by stretching a net-like reinforcing member made of an anisotropic metal lath or expanded metal on the main bar, wherein only the main bar is omitted from the auxiliary bar. Lightweight cellular concrete panel as described.   The lightweight cellular concrete panel according to claim 2 or 3, wherein a diameter of the main reinforcement is 4 mm to 9 mm.

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