JP3045248B2 - Installation jig for wall reinforcement - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is intended to secure concrete covering and a pitch between reinforcing bars when placing concrete in a formwork for constructing walls in reinforced concrete construction. In addition, the present invention relates to a jig for supporting a reinforcing bar at a predetermined position.

[Conventional technology]

FIG. 7 shows a conventional means for installing a wall reinforcing bar at the time of placing concrete. The horizontal member 3 is provided with a clamp 2 for fixing to the upper part 1a of the outer formwork 1 for supporting the wall vertical reinforcing bars 6 arranged in a line in a predetermined position.
A holding member 4 slidably mounted on the horizontal member 3 and having two grooves 4a at a predetermined interval above, and engaging with the two grooves 4a of the holding member 4 , Bars 5 for reinforcing bars sandwiching wall reinforcing bars 6 arranged in a row from both sides
And the installation jig provided with.

In the installation jig, first, the horizontal member 3 is fixed to the upper part 1a of the outer mold frame 1 by using the clamp 2 so that the horizontal member 3 becomes horizontal inward of the outer mold frame 1. Then, the holding bracket 4 on the horizontal member 3 is slid to a predetermined position and fixed. Next, a pair of rebar bars 5 are stretched horizontally so as to sandwich the wall vertical rebars 6 arranged in a row from both sides, and the pair of rebar bars 5 are installed at predetermined intervals. The wall vertical reinforcing bar 6 is supported at a predetermined position by engaging with the grooves 4a on the upper portions of the plurality of holding fittings 4.

[Problems to be solved by the invention]

However, when the wall vertical reinforcing bars 6 are supported by the installation jig, the position of each of the wall vertical reinforcing bars 6 sandwiched between the pair of reinforcing bar members 5 is determined by an installer's eye measurement or the like. However, there is a problem that it takes time to determine the pitch between the vertical reinforcing bars 6, and the supporting position of the vertical reinforcing bars 6 becomes inaccurate.

In addition, since the wall vertical reinforcing bar 6 is supported by being sandwiched between the pair of reinforcing bar bars 5, if the concrete is not carefully brought in, the concrete stream to be poured and the concrete flow to be poured into the wall vertical reinforcing bar 6. There is also a problem that the support position may be shifted or the wall vertical reinforcing bar 6 may be bent when hit directly.

SUMMARY OF THE INVENTION It is an object of the present invention to accurately support a vertical reinforcing bar at a predetermined position with sufficient strength at the time of placing concrete.

[Means for solving the problem]

In order to solve the above-mentioned object, a wall reinforcing installation jig according to the present invention includes a rising member that is disposed perpendicularly to a floor form and a wall reinforcing bar that is horizontally installed on an upper portion of the rising member and extends along the wall reinforcing bar. And a ruler that extends horizontally and has a reinforcing bar engaging portion for engaging a reinforcing bar at predetermined intervals along the longitudinal direction on both sides in the width direction of the ruler.

As the ruler, for example, a ruler made of a member having a chevron cross section or a plate-like member using an angle iron may be detachably mounted on an upper part of a rising member.

[Action]

Between the rows of the vertical reinforcing bars arranged in two rows, the upper portions of the rising members are arranged along the group of the vertical reinforcing bars, and the rising members are arranged on the floor reinforcement or the like of the floor formwork. Set the ruler horizontally on top of the rising member.

Thereafter, the respective wall vertical reinforcing bars are locked to the reinforcing bar engaging portions of the ruler, thereby supporting the wall vertical reinforcing bars at predetermined positions. In this state, each vertical wall reinforcing bar is positioned in a row along both sides of the ruler, and the pitch between the reinforcing bars in each row is determined by the reinforcing bar engaging portion of the ruler.

When the support of the vertical wall reinforcing bars has been obtained, concrete is driven.

When a member having a chevron cross section using a detachable angle iron is used as the ruler, the lower center of the ruler is placed in contact with the upper portion of the rising member after the rising member is disposed. When this ruler is used, after the concrete is driven into a position lower than the height of the ruler, the ruler is removed from the fixed group of vertical reinforcing bars and the rising members, and the ruler is used again.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show an embodiment of the present invention.

First, the configuration will be described. A horse 11 is composed of a horizontal upper portion 11a, vertical portions 11c at both ends thereof, and legs 11b extending individually in different directions from lower ends of the vertical portions 11c. In a state where two 11a are arranged in a straight line, a horizontal member 12 is bridged and welded to the upper part 11a of both horses 11 to form a rising member T.

A ruler 13 is placed on the horizontal member 12 of the rising member T to form a mounting jig for a wall reinforcing bar. The ruler 13 is formed in the shape of an umbrella made of an angled steel material having a predetermined length, and forms a reinforcing bar engaging portion 13a for engaging the vertical wall reinforcing bar 14 at predetermined intervals on both sides in the width direction. In this embodiment, the rebar engaging portion 13a is formed by cutting a side edge of the ruler 13 into a concave shape,
This concave notch dimension corresponds to the diameter of the vertical wall reinforcing bar 14.

Such a ruler 13 with the inside corner of the angle iron facing downward,
This is detachably mounted on the horizontal member 12 of the rising member T.

The installation of the installation jig of the above-described configuration is performed by first placing the horizontal member 12 in the center between the rows of the two vertical rows of wall vertical reinforcing bars 14 projecting upward from the floor form 17 for casting concrete. With the horses positioned at both ends
Place the 11 feet 11b on the reinforcing bars 15 on the floor form 17 and
And the reinforcing members 15 are tied together by a binding wire (not shown) to fix the rising member T. Next, the ruler 13 is placed horizontally along the wall reinforcing bars 14 on the fixed horizontal member 12 of the rising member T by abutting the inner corner of the lower central chevron.

After setting the installation jig as described above, the wall vertical reinforcing bars 14 are respectively locked to the pair of reinforcing bar engaging portions 13a on both sides in the width direction of the ruler 13 provided at a predetermined interval, and are shown. The two wall vertical reinforcing bars 14 are fastened to the reinforcing bar engaging portion 13a with no binding wires. By repeating the above procedure, each wall vertical reinforcing bar 14 is set at a predetermined pitch along both sides of the ruler 13.
13 is engaged with the reinforcing bar engaging portion 13a.

After supporting the vertical reinforcing bar 14 at a predetermined position by the installation jig as described above, concrete is driven to a height lower than the installation position of the ruler 13, and then the ruler 13 is removed from the vertical reinforcing bar 14 and the rising member T. The ruler 13 thus removed is used again when another concrete is poured.

As mentioned above, using this wall rebar installation jig,
Rebar engaging part provided at a predetermined interval on ruler 13
Since the vertical reinforcing bar 14 is engaged with the 13a and tied by a binding wire, the vertical reinforcing bar 14 is supported by a simple means at a predetermined correct position with sufficient strength. Even if the pipe or the concrete stream hits the vertical wall reinforcing bar 14, the supporting position does not shift because the vertical wall reinforcing bar 14 is tightly connected to the reinforcing bar engaging portion 13a of the ruler 13. Further, since the ruler 13 is detachably mounted on the rising member T, it can be reused any number of times.

In the above-described embodiment, the rebar engaging portion 13a is provided on the angle iron to form the ruler 13. However, as shown in FIG. 4, the angle iron 16 is used as a locking means for the horizontal member 12, and the angle iron is used. A vertical reinforcing bar such as a ruler 13 formed by welding a plate-like member having a reinforcing bar engaging portion 13a on both sides in the width direction to the upper portion of a steel 16 or the like.
A ruler 13 of another shape may be used as long as the ruler 13 has a reinforcing bar engaging portion for engaging the same. Also, an example is described in which the angle of the angle iron is used for installation on the horizontal member 12 that is the upper part of the rising member T. However, if the ruler 13 can be installed on the upper part of the rising member T, other known means may be used. May be used.

Further, in the above-described embodiment, the horizontal member 12 is welded to the upper portions 11a of the pair of horses 11 to form the rising members T. However, as shown in FIG. It may be. At this time, the upper part of horse 11
The reference numeral 11a also serves as the horizontal member 12 and serves as an upper portion of the rising member T, on which a ruler 13 (not shown) is installed to constitute a mounting jig for the wall rebar. As shown in FIG. 6, if the ruler 13 can be installed on the upper part 11a, a rising member T composed of only a pair of horses 11 is used without welding the horizontal member 12 to the upper part 11a of the horses 11. May be. At this time, both ends of the ruler 13 are directly
A mounting jig for the vertical wall reinforcement is placed on a.

Further, the horse 11 has another shape such as a U-shape.
It may be.

Furthermore, in the above-described embodiment, the ruler 13 has a reinforcing bar engagement portion 13a.
Although a concave notch is provided as above, a reinforcing bar engaging portion may be provided using other known means as long as the vertical wall reinforcing bar 14 is locked.

〔The invention's effect〕

As described above, the use of the installation jig for a wall rebar according to the present invention makes it possible to easily determine the support position of the wall rebar by the rebar engaging portions provided on the ruler at predetermined intervals. Therefore, there is an effect that it is possible to easily and accurately secure concrete covering and a pitch between reinforcing bars.

Further, when a member having a cross section angle shape such as an angle iron or a plate-shaped member is detachably mounted on a rising member as a ruler, the ruler can be easily manufactured from an angle material or the like. It is possible to support the wall reinforcement with sufficient strength at the time of driving, furthermore, when the concrete placement is completed, remove the ruler from the rising member, and again when placing another concrete, There is an effect that it can be reused as a ruler of the installation jig.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a rising member and a ruler of the embodiment, FIG. 2 is a side view in which a wall vertical reinforcing bar is supported by a mounting jig for a wall reinforcing bar, FIG. 3 is a top view thereof, and FIG. ) Is a top view showing a second ruler, FIG. 4 (b) is a side view thereof, FIG. 5 is a perspective view showing a second rising member, FIG. 6 is a perspective view showing a third rising member, FIG. 7A is a side view of a conventional installation jig, and FIG. 7B is a top view thereof. 11 ... horse, 12 ... horizontal member, 13 ... ruler, 13a ... rebar engaging part, 17 ... floor form, T ... rising member

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04G 21/12 105

Claims (2)

(57) [Claims] 1. A rising member which is arranged vertically to a floor formwork, and a ruler which is horizontally disposed on an upper portion of the rising member and extends horizontally along a wall reinforcing bar. A mounting jig for a wall reinforcing bar, comprising a reinforcing bar engaging portion for engaging a reinforcing bar at predetermined intervals along a longitudinal direction on both sides in a width direction. 2. The installation jig for a wall reinforcing bar according to claim 1, wherein said ruler formed of a member having a mountain-shaped cross section or a plate-like member is detachably mounted on an upper portion of a rising member.