JPH0612030B2 - Rebar fixing tool - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a reinforcing bar fixing tool, and more particularly to a reinforcing bar fixing tool in a reinforcing bar structure used in a reinforced concrete construction method.

[Conventional technology]

When constructing a building having a plurality of floors by reinforced concrete, a frame structure of the reinforcing bar is assembled for each floor. The assembling situation of these reinforcing bars will be described with reference to FIG.

FIG. 6 is a cross-sectional view for explaining the arrangement of reinforcing bars at the time of placing concrete after the assembly is completed. In this figure, 1 is a foundation, 2 is a column bar, 3 is a beam above the beam, 4 is a beam below the beam, 5 is a stirrup bar, 6
Are abdominal muscles, 7 and 8 are column hoop muscles, 9 is a formwork, 10 is a spacer block, 11 is an upper beam muscle, 12 is a lower beam muscle, 13 is abdominal muscle, 14 is a stirrup muscle, 15 is a stop bar, 16 is Beam crossing column column hoop muscle, 17a, 17b, 19a, 19b are upper beam intermediate suspension muscles (two-stage muscles), 18a, 18b, 20 are lower beam intermediate suspension muscles (hereinafter, generally called middle suspension muscles) (Referred to).

At the beginning of the construction, foundation 1 concrete is poured,
Assemble the column bar 2 on it and attach the column hoop bar 7
After the stirrup muscles 5 and the abdominal muscles 6 have been arranged, the concrete is poured into the floor. Next, the column hoop reinforcement 8 is attached to the column reinforcement 2, the form 9 is arranged, and the concrete is cast into the column. Next, the formwork 9 for forming the floor on the second floor, in which the beam portion for forming the beam has a concave portion, is assembled. On the formwork 9 thus formed, the rebar structure of beams intersecting each other on the second floor is assembled.

The reinforcing bar structure of this beam is composed mainly of an upper beam 11 and a lower beam 12 which intersect with the column reinforcement 2, and the portions other than the portion of the columnar 2 are the upper beam 11 comrades, the lower beam 12 comrades, and The stirrup streak 14, which is stretched between the upper beam 11 and the lower beam 12, the upper beam 11
And the abdominal muscles 13 stretched in parallel with the sub-beam muscles 12, the stirrup muscles 14 and the width stop bar 15 attached to the fulcrum of the abdominal muscles 13, and the intersecting portions of the beams orthogonal to each other are the column muscles 2.
A beam intersection column hoop muscle 16 is attached to the outer periphery of the.

Then, the reinforcing bar structure of the beam is assembled on the formwork 9 for forming the floor on the second floor in which the beam portion for forming the beam is a concave portion by using the lower beam reinforcement receiving tree and the horse. After the assembly, the rebar structure of the beam is used to remove the horse and drop it into the recess of the formwork 9. next,
Concrete is poured into the concave portion of the formwork 9 to construct a reinforced concrete beam. Upper floors are similarly formed.

And when assembling such a beam rebar structure,
In the connecting portion between the beam girder 3 and the column bar 2, the connecting portion between the beam girder 4 and the column bar 2, the connecting part between the beam girder 11 and the column bar 2, the central part of the beam girder 12, and the like, As shown in FIG. 6, in order to reinforce the reinforcing bar structure, middle suspension bars 17a, 17b, 18a, 18b, 19 are arranged parallel to the upper beam 3, lower beam 4, upper beam 11, lower beam 12, etc.
a, 19b, and 20 may be arranged, and these middle suspension bars are fixed to the beam stirrup bars 14a with a binding wire 21 as seen in the beam lower middle suspension bars 20, for example. For example, in the case of the on-beam middle suspension bar 19a provided below the upper beam 11, a so-called C tube or S tube having a C or S shape is used to suspend the upper beam suspension bar 19a from the upper beam 11. There is also.

[Problems to be solved by the invention]

As mentioned above, it is necessary to attach the suspending muscles to the stirrup reinforcing muscles one by one using the binding wires, and the distance between the upper beam, the lower beam, etc. and the middle suspending muscle is based on the law. If the value is subject to inspection and it does not reach the value specified by law, it will be necessary to redo the work.Because the binding wires may be cut during the work, the work of installing the suspending bar requires time and labor. Was a work that required.

In addition, in the installation work of the middle suspension bar, for the middle suspension bar to be attached to the upper beam, the S pipe or the C pipe is used as described above, and the method of holding the middle suspension line from the upper beam is also used. When using these S pipes and C pipes, the distance between the upper beam and the middle suspension can be set to a value specified by law, but in order to prevent the middle suspension from falling off, work to secure it with a binding wire Are used together.

However, since it is not possible to use this S pipe or C pipe for the suspending bar that is attached at a predetermined interval from the under beam muscle, the attachment method is still performed by using the binding wire for the stirrup muscle. Therefore, the problem of the attachment work of the middle suspension bar has not been solved.

An object of the present invention is to eliminate such problems and to provide a reinforcing bar fixing tool capable of easily and accurately mounting a suspension bar when assembling a reinforcing bar structure in a concrete construction method, for example. It is what

[Means for solving problems]

The structure of the present invention made in order to achieve the above-mentioned object is an engaging portion having openings that are provided at both ends and that elastically engage with the reinforcing bars for reinforced concrete, and that has a space that engages with the reinforcing bars. A fixing part for holding the two engaging parts at a predetermined interval, and a protruding part projecting in a direction perpendicular or substantially perpendicular to a direction connecting the two engaging parts from the fixing part and having a hook-like tip. Consisting of a reinforcing bar locking portion that locks to another reinforcing bar that is perpendicular to the reinforcing bar that is engaged with, and holds two of the adjacent reinforcing bars at a predetermined interval during assembly of the reinforcing bars and at the same time It is a fixture used for locking to the other reinforcing bar which is perpendicular to the reinforcing bar.

[Action]

As described above, the reinforcing bar fixing device of the present invention has the engaging part, the fixing part, and the reinforcing bar locking part, and the operation of each is as follows.

The engaging portion has an opening that elastically engages the reinforcing bar, and has a space for engaging the reinforcing bar, so if the opening is pressed against the reinforcing bar, the reinforcing bar will be used for engaging the reinforcing bar. Since it penetrates into the space and the opening returns to its original position due to elasticity, the reinforcing bar can be reliably held in the space, and this work can be performed easily, easily, and in a short time.

Since the fixing portion holds the two engaging portions at a predetermined interval, for example, when used between the beam upper beam and the beam upper suspension, the distance between the beam upper beam and the beam upper suspension is accurately set to the predetermined interval. can do.

The reinforcing bar locking part projects from the fixing part in a direction substantially perpendicular to the axial direction of the opening and has a hook-shaped tip, so that, for example, the under beam beam and the under beam suspension beam are engaged in the space of the engaging part. If the rebar fixing tool is attached to a portion adjacent to the stirrup bar, the hooked tip of this rebar locking part is locked to the stirrup bar, so that It is possible to prevent rotation around and securely fix the under-beam suspension bar.

〔Example〕

 Examples will be described below.

FIGS. 1 (a) and 1 (b) are a front view and a side view, respectively, of an embodiment of a reinforcing bar fixing device of the present invention, FIG. 2 is a sectional view of a frame structure of a reinforcing bar showing its use state, and FIG. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 2, and FIG. 4 is a cross-sectional view of a main part of the frame structure of the reinforcing bar showing another usage state. In these figures, the same parts as those in FIG. 6 are designated by the same reference numerals, and 22 is a reinforcing bar fixture, 23a and 2
3b are openings 24a, which elastically engage the reinforcing bars,
24b, an engaging portion having a space for engaging the reinforcing bar, 25
Is a fixing portion that holds the engaging portions 23a and 23b at a predetermined interval, 26 is a reinforcing bar engaging portion that protrudes from the fixing portion 25 in a direction substantially perpendicular to the axial direction of the openings 24a and 24b, and has a hooked tip. Reinforcing bars, and 28, are column rebars.

This rebar fixing tool 22 is made of a plastic such as 6 nylon, and the length of the fixing part is 1.7 times the diameter (16 to 32 mm) of the rebar to be used. The length in the direction is, for example, about 1 to 1.5 cm.

When assembling a frame structure of a reinforcing bar using this reinforcing bar fixture 22, at the stage where the frame structure is roughly assembled on each floor as described in the prior art, the above-beam beam to which the middle suspension bar is attached is attached. , The opening 24a of one engaging portion 23a of the reinforcing bar fixture 22 is pressed against the upper beam and the lower beam that are adjacent to the straps of the under beam, and the reinforcing bar 27 is used for engaging the reinforcing bar. Hold in space. At the same time, the hook-shaped tip of the reinforcing bar engaging portion 26 protruding from the fixed portion 25 is engaged with the stirrup. Next, the above beam, for example,
When attaching the beam suspension rod 19a to the beam beam 11,
The upper suspension beam 19a on the beam is opened from below to the opening 2 of the other engaging portion 23b.
4b is pressed to hold the beam suspension rod 19a in the space of the reinforcing bar engaging portion 23b. In addition, the sub-beam, for example, the sub-beam 1
When it is attached to the second engaging portion 23, the opening 2
4B is attached to the opening 24b of the engaging portion 23b which is attached upward, and the under beam suspension beam 20 is attached by pressing.
In FIG. 2, the upper beam 3, lower beam 4, upper beam 11, lower beam 1
2 to the middle suspension lines 17a, 17b, 18a, 18b,
19a, 19b and 20 are attached and a case where they are used for the adjacent column bar 2 is shown. FIG. 3 shows A- of FIG.
Section A is shown in detail. Further, as shown in the cross section of FIG. At this time, if it is desired to use the reinforcing bar fixtures in two directions, the intended purpose can be achieved by using them alternately for each step.

FIG. 5 is a front view of another embodiment, in which the same parts as those in FIG. 1 are designated by the same reference numerals, 23c is an engaging portion, and 24c is an opening portion of the engaging portion 23c. This embodiment differs from the embodiment of FIG. 1 in that the opening 24 of the engaging portion 23c is
Since the opening direction of c is perpendicular to the opening direction of the opening 24a of the engaging portion 23a, for example, in the engaging portion 23c of the reinforcing bar fixture 22 fixed to the upper beam of the beam at the engaging portion 24a. The work of fixing the hanging bar can be further facilitated.

As described above, when the reinforcing bar fixtures of these examples are used, the work can be carried out easily, easily, and in a short time without the need for wiring work. Further, the holding of the reinforcing bar is reliable and does not easily come off, and the accident such as the conventional tie breakage does not occur. Further, in this reinforcing bar fixing tool, since the distance between the reinforcing bars can be set to a predetermined value by the fixing part, the work satisfying the regulation can always be performed, and therefore the work does not need to be redone.

Further, since the S pipe and the C pipe cannot be used, it is possible to carry out the work of attaching the suspending bar of the inferior beam which is difficult to perform similarly to the work of the suspending bar of the beam above the beam.

That is, the work according to the specifications can be performed with one touch, and the work process can be significantly shortened.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY The reinforcing bar fixing device of the present invention can provide a reinforcing bar fixing device that can easily and accurately attach, for example, a suspension bar when assembling a reinforcing bar structure in a concrete construction method, and has a large industrial effect. It will be.

[Brief description of drawings]

1 (a) and 1 (b) are a front view and a side view, respectively, of an embodiment of a reinforcing bar fixing device of the present invention, FIG. 2 is a cross-sectional view of a frame structure of the reinforcing bar showing its use state, and FIG. 2 is a sectional view taken along the line A-A in FIG. 4, FIG. 4 is a sectional view of a main part of the frame structure of the reinforcing bar showing another usage state, and FIG. 5 is a front view of another embodiment of the present invention.
The figure is an explanatory view of a conventional frame structure of a reinforcing bar. 22 ... Reinforcing bar fixing tool, 23a, 23b ... Engaging portion, 24
a, 24b ... Opening part, 25 ... fixing part, 26 ... reinforcing bar locking part.

Claims (3)

[Claims] 1. An engaging portion having opening portions provided at both ends for elastically engaging a reinforcing bar for reinforced concrete and having a space for engaging with the reinforcing bar; and holding the two engaging sections at a predetermined interval. Fixing portion and another reinforcing bar projecting in a direction perpendicular or substantially perpendicular to the direction connecting the two engaging parts from the fixing part and having a hook-like tip and engaging the engaging part at a right angle. A reinforcing bar locking portion that locks the two reinforcing bars adjacent to each other at a predetermined interval when assembling the reinforcing bars, and at the same time, locks the other reinforcing bars forming a right angle with the two reinforcing bars. A rebar fixing device characterized by being a fixing device used for. 2. Reinforcing bars that engage with the two engaging portions are a beam upper beam or a beam lower beam and a suspending bar, and another reinforcing bar that is perpendicular to the reinforcing bar engaging the engaging portion is The reinforcing bar fixing tool according to claim 1, which is a stirrup bar. 3. Reinforcing bars that engage with the two engaging portions are column reinforcing bars and rebars, and other reinforcing bars that form a right angle with the reinforcing bars engaging with the engaging portions are hoop reinforcing bars. Reinforcing bar fixing tool according to claim 1.