JP6933347B1 - Formwork holders and concrete formwork - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a formwork holder and a concrete formwork for reducing a storage space for materials constituting a basic formwork. SOLUTION: A square cylindrical main body 11 extending in the direction of gravity and a pair of first reinforcing material holding portions 12a and 12b protruding from a first side surface of the main body 11 and extending in the central axis direction of the main body 11, respectively. , A pair of second reinforcing material holding portions 13a and 13b protruding from the second side surface of the main body 11 and extending in the direction of the central axis of the main body 11, which are located on the back side of the first side surface, and from the third side surface of the main body 11. It is assumed that it has a support portion 14 that protrudes and extends in the central axis direction of the main body 11, and a panel holding portion 15 that is supported by the support portion 14 and faces the third side surface and extends in the central axis direction of the main body. [Selection diagram] Fig. 1

Description

The present invention relates to a formwork holder and a concrete formwork used for molding a rising portion of a reinforced concrete foundation.

In the formwork for molding the rising portion of the foundation of the reinforced concrete structure, a formwork panel in which the plywood for the concrete formwork is reinforced with a crosspiece is used (for example, Patent Document 1 below).

Japanese Unexamined Patent Publication No. 2005-282154

Since the formwork panel as described in Patent Document 1 has a large thickness dimension, there is a problem that a large storage space is required.

In view of the above problems, it is an object of the present invention to provide a formwork holder and a concrete formwork that reduce the space required for storing the materials constituting the foundation formwork.

In order to solve the above problems, the formwork holder according to the first aspect of the present invention is
A square tubular body that extends in the direction of gravity,
A pair of first reinforcing material sandwiching portions that protrude from the first side surface of the main body and extend in the central axis direction of the main body, respectively.
A pair of second reinforcing material sandwiching portions, which are located on the back side of the first side surface, project from the second side surface of the main body and extend in the direction of the central axis of the main body, respectively.
A support portion that protrudes from the third side surface of the main body and extends in the direction of the central axis of the main body,
It has a panel holding portion that is supported by the support portion, faces the third side surface, and extends in the central axis direction of the main body.

In order to solve the above problems, the formwork holder for the corner according to the second aspect of the present invention is
A square tubular body that extends in the direction of gravity,
A pair of first reinforcing material sandwiching portions that protrude from the first side surface of the main body and extend in the central axis direction of the main body, respectively.
A pair of second reinforcing material sandwiching portions, which are orthogonal to the first side surface and project from the second side surface of the main body and extend in the direction of the central axis of the main body, respectively.
When the main body is viewed in the direction of the central axis, the first side surface and the second side surface are separated from the pair of first reinforcing material sandwiching portions and protrude from the first side surface on the side far from the angle formed by the second side surface. , The first panel holding portion extending in the direction of the central axis of the main body,
When the main body is viewed in the direction of the central axis, the first side surface and the second side surface are separated from the pair of second reinforcing material sandwiching portions and protrude from the second side surface on the side far from the angle formed by the second side surface. It has a second panel holding portion extending in the direction of the central axis of the main body.

In order to solve the above problems, the formwork holder for the protruding corner according to the third aspect of the present invention is
A square tubular body that extends in the direction of gravity,
A pair of first reinforcing material sandwiching portions that protrude from the first side surface of the main body and extend in the central axis direction of the main body, respectively.
A pair of second reinforcing material sandwiching portions, which are orthogonal to the first side surface and project from the second side surface of the main body and extend in the direction of the central axis of the main body, respectively.
When the main body is viewed in the direction of the central axis, the side of the angle formed by the first side surface and the second side surface is separated from the pair of first reinforcing material sandwiching portions and protrudes from the first side surface. A first panel holding portion extending in the direction of the central axis of the main body and
When the main body is viewed in the direction of the central axis, the side of the angle formed by the first side surface and the second side surface is separated from the pair of second reinforcing material sandwiching portions and protrudes from the second side surface. It has a second panel holding portion extending in the direction of the central axis of the main body.

In order to solve the above problems, the concrete formwork according to the fourth aspect of the present invention is held by the formwork holder according to any one of the first to third aspects and the formwork holder. It has a panel and a reinforcing material fixed to the formwork holder.

According to the present invention, it is possible to provide a formwork holder and a concrete formwork that provide a formwork holder that reduces the space required for storing materials constituting the foundation formwork.

It is a figure which shows the formwork holder which concerns on embodiment of this application. 1 (a) is a cross-sectional view taken along the line AA shown in FIG. 1 (b), and FIG. 1 (b) is a side view. It is a figure which shows the concrete formwork which has the formwork holder which concerns on embodiment of this application. FIG. 2A is a cross-sectional view taken along the line BB shown in FIG. 2B, and FIG. 2B is a side view. It is a figure which shows the concrete formwork which has the formwork holder which concerns on embodiment of this application. FIG. 3A is a cross-sectional view of the mold forming the inside corner, and FIG. 3B is a cross-sectional view of the mold forming the outside corner.

A concrete formwork using the formwork holder 10 and the formwork holder 10 according to the embodiment of the present application will be described with reference to FIGS. 1 and 2. In addition, in this application, the top and bottom shall refer to the top and bottom in the state where the concrete formwork is assembled, unless otherwise specified.

As shown in FIG. 1, the formwork holder 10 includes a main body 11, a pair of first reinforcing material holding portions 12a and 12b, a pair of second reinforcing material holding portions 13a and 13b, a support portion 14, and a panel. It has a sandwiching portion 15. The formwork holder 10 can be formed from, for example, a metal material, preferably from an aluminum alloy.

The main body 11 has a square tubular shape extending in the direction of gravity. The pair of first reinforcing member sandwiching portions 12a and 12b each project from the first side surface of the main body 11 (the side surface on the left side when facing FIG. 1A) and extend in the direction of the central axis of the main body 11. It is preferable that the pair of first reinforcing material sandwiching portions 12a and 12b extend in parallel with each other. The pair of second reinforcing material sandwiching portions 13a and 13b project from the second side surface of the main body 11 (the side surface on the right side toward FIG. 1A), which is located on the back side of the first side surface, and is the center of the main body 11. It extends in the axial direction. It is preferable that the pair of second reinforcing material sandwiching portions 13a and 13b extend in parallel with each other.

The support portion 14 projects from the third side surface of the main body 11 (the upper side surface of FIG. 1A) and extends in the direction of the central axis of the main body 11. The panel holding portion 15 is supported by the support portion 14, faces the third side surface of the main body 11, and extends in the direction of the central axis of the main body 11. The panel holding portion 15 preferably extends parallel to the third side surface of the main body 11. As shown in FIG. 1 (b), the main body 11, the pair of first reinforcing material holding portions 12a and 12b, the pair of second reinforcing material holding portions 13a and 13b, the support portion 14, and the panel holding portion 15 , It is preferable to have the same dimensions in the longitudinal direction.

According to the formwork holder 10 according to the above embodiment, the storage space for the materials constituting the basic formwork can be reduced.

The formwork holder 10 is used in a concrete formwork as shown in FIG. The formwork holder 10 holds the concrete formwork plywood 17 and the reinforcing material 18b. As shown in FIG. 2A, the end portion of the concrete formwork plywood 17 is inserted and sandwiched between the panel sandwiching portion 15 and the main body 11.

The ends of the reinforcing material 18b are sandwiched by a pair of first reinforcing material sandwiching portions 12a and 12b or a pair of second reinforcing material sandwiching portions 13a and 13b. The distance between the pair of first reinforcing material sandwiching portions 12a and 12b and the distance between the pair of second reinforcing material sandwiching portions 13a and 13b are smaller than the inserted reinforcing material 18b, and the reinforcing material 18b can be sandwiched by frictional force. preferable. As a result, fixing by a fixing member 16 such as a screw or a nail becomes unnecessary, and workability can be improved. When fixing with the fixing member 16, the pair of first reinforcing material holding portions 12a and 12b and the pair of second reinforcing material holding portions 13a and 13b may have through holes 12c and 13c through which the fixing member 16 is passed, respectively. preferable. Thereby, fixing by the fixing member 16 can be facilitated. The number of reinforcing members 18b arranged at intermediate positions in the vertical direction is not limited to one, and may be a plurality of reinforcing members depending on the required strength and the like. Therefore, as shown in FIG. 1 (b), it is preferable to arrange a plurality of through hole portions 12c and 13c vertically.

Reinforcing members 18a and 18c are arranged above and below the formwork holder 10, respectively. The concrete formwork plywood 17 has a height dimension larger than that of the formwork holder 10 and is in contact with the side surfaces of the reinforcing members 18a and 18c.

As shown in FIG. 2A, the concrete 19 is placed after the assembly of the concrete formwork is completed. The concrete formwork facing the concrete formwork using the formwork holder 10 may similarly use the formwork holder 10, but for example, the formwork holder 10 is used on the outdoor side. It is also possible to use a concrete formwork and use a formwork such as a zinc-plated steel plate that does not need to be removed after concrete is placed on the indoor side. As a result, the work required for removing the formwork on the indoor side can be omitted, the workability can be further improved, and the materials constituting the formwork on the outdoor side can be reused.

By using the formwork holder 10 using the formwork holder 10 described above, the concrete formwork plywood 17 does not need to be reinforced by fixing the crosspiece in advance, so that the concrete formwork plywood 17 can be stacked in a small space. You will be able to store it. The formwork holder 10 and the concrete formwork using the formwork holder 10 can be suitably used especially in an urban area where a space for storing materials is small.

FIG. 3A shows a formwork holder 20 for entering a corner and a concrete formwork using the formwork holder 20. FIG. 3B shows a formwork holder 30 for protruding corners and a concrete formwork using the formwork holder 30. The formwork holder 20 for the inside corner and the formwork holder 30 for the outside corner can be used together with the above-mentioned formwork holder 10. Since the formwork holder 20 for the inside corner is common to the above-mentioned formwork holder 10 in many respects, the part where the formwork holder 10 is described with a reference code is replaced with a reference code number. A reference code for a number obtained by adding 10 is added, and duplicate description is omitted. Further, since the formwork holder 30 for the protruding corner is also common to the above-mentioned formwork holder 10 in many respects, the part described with reference numerals to the formwork holder 10 is referred to by reference numerals. A reference code for a number obtained by adding 20 to a number is added, and duplicate description is omitted. For example, the main body of the formwork holder 20 for the inside corner corresponding to the main body 11 described in the formwork holder 10 is designated by the reference code of “21”, and the main body of the formwork holder 30 for the outside corner is attached. Is designated by the reference code of "31".

As shown in FIG. 3A, the formwork holder 20 for entering a corner has a pair of first reinforcing material holding portions 22a and 22b facing the main body 21 and a pair of second reinforcing material holding portions facing each other. It has 23a and 23b, a first panel holding portion 25a, and a second panel holding portion 25b. FIG. 3A shows a case where the pair of first reinforcing material sandwiching portions 22a and 22b and the pair of second reinforcing material sandwiching portions 23a and 23b sandwich the reinforcing material 28b by frictional force. The reinforcing material holding portion 22a and the second reinforcing material holding portion 23a may each have a through hole portion through which a fixing member such as a screw is passed, as in the first embodiment.

The pair of first reinforcing member sandwiching portions 22a and 22b project from the first side surface of the main body 21 (the side surface on the left side when facing FIG. 3A) and extend in the direction of the central axis of the main body 21. It is preferable that the pair of first reinforcing material sandwiching portions 22a and 22b extend in parallel with each other. The pair of second reinforcing material sandwiching portions 23a and 23b project from the second side surface (upper side surface in FIG. 3A) orthogonal to the first side surface of the main body 21 and extend in the central axis direction of the main body 21. There is. It is preferable that the pair of second reinforcing material sandwiching portions 23a and 23b extend in parallel with each other.

The first panel holding portion 25a is separated from the pair of first reinforcing material holding portions 22a and 22b on the side far from the angle formed by the first side surface and the second side surface when the main body 21 is viewed in the central axis direction. Then, it protrudes from the first side surface and extends in the direction of the central axis of the main body 21. It is preferable that the first panel holding portion 25a extends in parallel with the first reinforcing material holding portion 22b.

The second panel holding portion 25b is separated from the pair of second reinforcing material holding portions 23a and 23b on the side far from the angle formed by the first side surface and the second side surface when the main body 21 is viewed in the central axis direction. It protrudes from the second side surface and extends in the direction of the central axis of the main body 21. It is preferable that the second panel holding portion 25b extends in parallel with the second reinforcing material holding portion 23b.

In the concrete formwork forming the inside corner, the pair of first reinforcing material sandwiching portions 22a and 22b sandwich the reinforcing material 28b, and the pair of second reinforcing material sandwiching portions 23a and 23b sandwich the reinforcing material 28b. Further, the end portion of the concrete formwork plywood 27 is sandwiched between the first panel sandwiching portion 25a and the first reinforcing material sandwiching portion 22b, and concrete is sandwiched between the second panel sandwiching portion 25b and the second reinforcing material sandwiching portion 23b. The end of the formwork plywood 27 is sandwiched. As a result, even in the concrete formwork forming the inside corner, it is not necessary to use the formwork panel to which the reinforcing bar is fixed in advance, and the storage space for the materials constituting the foundation formwork can be reduced.

As shown in FIG. 3B, the formwork holder 30 for the protruding corner has a pair of first reinforcing material holding portions 32a and 32b facing the main body 31 and a pair of second reinforcing material holding portions facing each other. It has 33a and 33b, a first panel holding portion 35a, and a second panel holding portion 35b. FIG. 3B shows a case where the pair of reinforcing material sandwiching portions 32a and 32b and the pair of first reinforcing material sandwiching portions 33a and 33b sandwich the reinforcing material 38b by frictional force. The sandwiching portion 32b and the second reinforcing material sandwiching portion 33b may each have a through hole portion through which a fixing member such as a screw is passed.

The pair of first reinforcing member sandwiching portions 32a and 32b project from the first side surface of the main body 31 (the side surface on the left side when facing FIG. 3B) and extend in the direction of the central axis of the main body 31. It is preferable that the pair of first reinforcing material sandwiching portions 32a and 32b extend in parallel with each other. The pair of second reinforcing material sandwiching portions 33a and 33b project from the second side surface (upper side surface in FIG. 3B) orthogonal to the first side surface of the main body 31 and extend in the central axis direction of the main body 31. There is. It is preferable that the pair of second reinforcing material sandwiching portions 33a and 33b extend in parallel with each other.

The first panel holding portion 35a is separated from the pair of first reinforcing material holding portions 32a and 32b on the side of the angle formed by the first side surface and the second side surface when the main body 31 is viewed in the central axis direction. Therefore, it protrudes from the first side surface and extends in the direction of the central axis of the main body 31. It is preferable that the first panel holding portion 35a extends in parallel with the first reinforcing material holding portion 32a.

The second panel holding portion 35b is separated from the pair of second reinforcing material holding portions 33a and 33b on the side of the angle formed by the first side surface and the second side surface when the main body 31 is viewed in the central axis direction. It protrudes from the second side surface and extends in the direction of the central axis of the main body 31. It is preferable that the second panel holding portion 35b extends in parallel with the second reinforcing material holding portion 33a.

In the concrete formwork forming the protruding corner portion, the pair of first reinforcing material sandwiching portions 32a and 32b sandwich the reinforcing material 38b, and the pair of second reinforcing material sandwiching portions 33a and 33b sandwich the reinforcing material 38b. Further, the end of the concrete formwork plywood 37 is sandwiched between the first panel sandwiching portion 35a and the first reinforcing material sandwiching portion 32a, and concrete is sandwiched between the second panel sandwiching portion 35b and the second reinforcing material sandwiching portion 33a. The end of the formwork plywood 37 is sandwiched. As a result, even in the concrete formwork forming the protruding corner portion, it is not necessary to use the formwork panel in which the crosspiece is fixed and reinforced in advance, and the storage space for the materials constituting the foundation formwork can be reduced.

Although the specific embodiments have been described above, the present invention is not limited to this, and various changes and improvements can be made. For example, the cross-sectional shape of the main body 11 of the formwork holder 10 is substantially square in the figure of the above embodiment, but may be rectangular depending on the required strength.

10 Formwork holder 11 Main body 12a, 12b, 22a, 22b, 32a, 32b First reinforcing material holding part 13a, 13b, 23a, 23b, 33a, 33b Second reinforcing material holding part 14 Support part 15 Panel holding part 16 Fixed Member 17 Concrete formwork plywood 18a, 18b, 18c, 28b, 38b Reinforcing material 25a, 35a First panel holding parts 25b, 35b Second panel holding parts 19, 29, 39 Concrete

Claims (6)

A square tubular body that extends in the direction of gravity,
A pair of first reinforcing material sandwiching portions that protrude from the first side surface of the main body and extend in the central axis direction of the main body, respectively.
A pair of second reinforcing material sandwiching portions, which are located on the back side of the first side surface, project from the second side surface of the main body and extend in the direction of the central axis of the main body, respectively.
A support portion that protrudes from the third side surface of the main body and extends in the direction of the central axis of the main body,
A formwork holder having a panel holding portion supported by the support portion, facing the third side surface, and extending in the central axis direction of the main body. A square tubular body that extends in the direction of gravity,
A pair of first reinforcing material sandwiching portions that protrude from the first side surface of the main body and extend in the central axis direction of the main body, respectively.
A pair of second reinforcing material sandwiching portions, which are orthogonal to the first side surface and project from the second side surface of the main body and extend in the direction of the central axis of the main body, respectively.
When the main body is viewed in the direction of the central axis, the first side surface and the second side surface are separated from the pair of first reinforcing material sandwiching portions and protrude from the first side surface on the side far from the angle formed by the second side surface. , The first panel holding portion extending in the direction of the central axis of the main body,
When the main body is viewed in the direction of the central axis, the first side surface and the second side surface are separated from the pair of second reinforcing material sandwiching portions and protrude from the second side surface on the side far from the angle formed by the second side surface. A formwork holder for a corner having a second panel holding portion extending in the direction of the central axis of the main body. A square tubular body that extends in the direction of gravity,
A pair of first reinforcing material sandwiching portions that protrude from the first side surface of the main body and extend in the central axis direction of the main body, respectively.
A pair of second reinforcing material sandwiching portions, which are orthogonal to the first side surface and project from the second side surface of the main body and extend in the direction of the central axis of the main body, respectively.
When the main body is viewed in the direction of the central axis, the side of the angle formed by the first side surface and the second side surface is separated from the pair of first reinforcing material sandwiching portions and protrudes from the first side surface. A first panel holding portion extending in the direction of the central axis of the main body and
When the main body is viewed in the direction of the central axis, the side of the angle formed by the first side surface and the second side surface is separated from the pair of second reinforcing material sandwiching portions and protrudes from the second side surface. A formwork holder for a protruding corner having a second panel holding portion extending in the direction of the central axis of the main body. Any one of claims 1 to 3, wherein the distance between the pair of first reinforcing material sandwiching portions and the distance between the pair of second reinforcing material sandwiching portions are smaller than the width of the reinforcing material, and the reinforcing material is held by frictional force. The formwork holder described in item 1. The formwork according to any one of claims 1 to 4, wherein the pair of first reinforcing material sandwiching portions and the pair of second reinforcing material sandwiching portions have through holes through which fixing members for fixing the reinforcing materials are passed. Holder. A concrete formwork having the formwork holder according to any one of claims 1 to 5, a panel held by the formwork holder, and a reinforcing material fixed to the formwork holder.

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