JP4392684B2 - Rebar rod jig, rebar rod assembly method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention, in concrete-based structures, columns, beams, walls, method of assembling rebar cage that for jig to use reinforcing steel cage for use in building a rebar cage such as a floor.
[0002]
[Prior art]
Conventionally, in a steel reinforced concrete structure, a small beam constructed between large beams has been constructed by assembling reinforcing bars in the field without using a steel frame. In this case, the upper and lower main reinforcing bars are passed between the steel beams, the shear reinforcing bars (barrels) are attached around the main reinforcing bars, and the contact points are bound and constructed. Therefore, when assembling the reinforcing bars before assembling the formwork, there is nothing as a reference, it is difficult to construct at an accurate position, and skill is required.
[0003]
Various methods for assembling reinforcing bar rods in advance have also been proposed in order to reduce construction work on site (for example, Patent Document 1). In this case, a reinforcing bar is inserted into the insertion hole formed in the assembly assisting device to keep the shape.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 7-217074
[Problems to be solved by the invention]
In the conventional method, the assembled reinforcing bar is removed from the assembly auxiliary device, and only the assembled reinforcing bar is lifted by heavy machinery and transported to the construction site (see FIG. 6 of Patent Document 1). . Accordingly, there is a problem in that distortion and deformation are likely to occur in the rebar bar during transportation and assembly, and various jigs must be used separately to prevent this.
[0006]
[Means for Solving the Problems]
However, in the present invention, the first and second main rebars are joined by the lattice bars, the support members are attached to form the reinforcing bar rod jig, and the reinforcing bar rod is assembled using the reinforcing bar rod jig. Solved the problem.
[0009]
That is, the present invention is a method for assembling a reinforcing bar rod in which a small beam as a reinforcing rod rod is constructed in the following procedure.
(1) The first main reinforcing bar and the second main reinforcing bar which are arranged in parallel are joined by a lattice bar, and a support member is joined perpendicularly to the outside of the second main reinforcing bar to constitute a reinforcing bar rod jig.
(2) Between the parallel beams, the rebar rod jig is installed with the second main reinforcing bar facing up, and the second main reinforcing bar is placed and fixed on the large beam.
(3) On one side of the supporting member, a shaft bar located on one side of the beam is placed and placed along the second main reinforcing bar.
(4) The other side of the rebar located below the beam is arranged below the rebar jig, and a shear reinforcement is attached to the one side and the other side of the rebar. A small beam is formed by binding the shaft reinforcement and the shear reinforcement.
[0010]
Another invention is a method for assembling a reinforcing bar rod in which the reinforcing bar rod is constructed according to the following procedure.
(1) The first main reinforcing bar and the second main reinforcing bar that are arranged in parallel are joined by a lattice bar, and a support member is joined orthogonally on the outer side of the second main reinforcing bar to constitute a reinforcing bar rod jig. .
(2) to the support member of the reinforcing bar cage jig, placing temporarily fixed to one side of the axial reinforcement rebar cage erection placed to and along the second main reinforcing bars.
(3) the in the outer direction of the first main reinforcing bars, in parallel to the axial reinforcement of the one side, with arranging the axial reinforcement of the other side of the reinforcing steel cage, fitted with a shear reinforcement in the two axial reinforcement, the one by tying the axial reinforcement and the shear reinforcement of the side the other side constitutes the reinforcement cage.
[0011]
Moreover, in the above, it is the rebar rod assembly method characterized by comprising as follows.
(1) The first main reinforcing bar and the second main reinforcing bar that are juxtaposed are joined by a lattice bar, and a support member is joined orthogonally to the outside of the second main reinforcing bar, and the first rebar rod jig and the second Construct a two-rebar rod jig.
(2) The first reinforcing bar rod jig and the second reinforcing rod rod jig are opposed to the first main reinforcing bar of the both reinforcing rod rod jigs, and the support member is substantially parallel or substantially perpendicular. Arrange so that
(3) The first main reinforcing bars are fixed to each other.
(4) The first second reinforcing bar rod jig formed as described above is used as the reinforcing bar rod jig described in the paragraph No. 0010, and the support member of the second reinforcing bar rod jig is described in the paragraph No. 0010. As the support member, the steps (2) to (3) described in the paragraph number 0010 are executed .
[0012]
Furthermore, another method is an assembling method of the reinforcing bar cage, characterized in that a wall as a reinforcing bar rod is constructed in the following procedure.
(1) The first upper main reinforcing bar and the second main reinforcing bar which are arranged in parallel are joined by a lattice bar , and a support member is joined perpendicularly to the outside of the second main reinforcing bar to constitute a reinforcing bar rod jig. . The supporting members of the adjacent reinforcing bar jigs are fixed in parallel with the reinforcing bar jigs.
(2) The first grid reinforcing bar is placed on the main reinforcing bar side of any of the parallel reinforcing bar punching jigs with the main reinforcing bar as a guide, and the main reinforcing bar and the first grid reinforcing bar that are in contact are fixed. ,
(3) A second grid reinforcing bar is placed on the other reinforcing bar side of the juxtaposed reinforcing bar jig with the main reinforcing bar as a guide, and the main reinforcing bar and the second grid reinforcing bar that are in contact with each other are fixed.
(4) The rebar bar is configured as described above.
[0013]
The above-mentioned reinforcing bar rod includes not only the case of being mainly composed of axial bars and shear reinforcing bars such as columns and beams, but also the case of being composed of reinforcing bars arranged in a lattice shape such as a floor or a wall.
[0014]
The base in the above includes a specific work table, a slab surface in the field, the ground, and the like.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
(1) Two second main reinforcing bars 2 and 2 forming the base of the isosceles triangle are arranged in parallel with the first main reinforcing bar 1 as the apex, and the lattice 3 is placed at the hypotenuse of the isosceles triangle. It arrange | positions and the 1st main reinforcement 1 and the 2nd main reinforcement 2 are each welded, and a solid truss is formed. A support rod 7 and 7 are joined to the outside of the second main rebar 2 (the other side of the first main rebar 1 ) perpendicularly to the second main rebar 2 to form a rebar jig 10 (FIG. 1). ). The length D ₁ of the supporting rebar 7, previously Ryohaba, i.e. sets the length depending on the width of the upper shaft rebar.
[0016]
(2) Between the large beams 13 and 13 made of H-shaped steel, the rebar rod jig 10 is installed at the small beam construction position with the second main reinforcing bars 2 and 2 facing up. The 2nd main reinforcement 2 is mounted in the upper surface 14 of the big beam 13, and if necessary, it fixes. At this time, the reinforcing bar punching jig 10 is arranged so that the first main reinforcing bar 1 is positioned at the center of the small beam in a planar position.
[0017]
(3) On the supporting rebar 7, the upper shaft rebars 16, 16 for the small beam are erected with the rebar rod jig 10 as a guide, and subsequently the lower shaft rebars 17, 17 and the stirrups 18, 18 are arranged. Then, they are fixed to each other to construct the beam (rebar bar) 20 (FIGS. 2B and 2D).
[0018]
[Example 1]
An embodiment of a reinforcing bar scissors used for carrying out the present invention will be described with reference to FIG.
[0019]
One primary rebar 1 is placed at the top of an isosceles triangle upside down, and two second main rebars 2 are placed at the bottom of the isosceles triangle upside down; A lattice 3 having continuous peaks 4 and valleys 5 is arranged at the hypotenuse of the isosceles triangle. The peak 4 of the lattice 3 abuts on the second main rebar 2, the valley 5 of the lattice 3 abuts on the first main rebar 1, and the contact position is welded.
[0020]
Support reinforcing bars 7 and 7 orthogonal to the second main reinforcing bars 2 and 2 are fixed to the upper surface side (outer side) 2 a of the second main reinforcing bar 2. The supporting reinforcing bars 7 are arranged in parallel in the length direction of the second main reinforcing bars 2. As described above, the three-dimensional reinforcing bar jig 10 is configured (FIG. 1). In addition, although the lattice 3 was arrange | positioned inside the 2nd main reinforcement 2 and 2, it can also arrange | position outside the 2nd main reinforcement 2 and 2 (not shown).
[0021]
In the above description, the length of the supporting reinforcing bars 7 is appropriately adjusted according to the object to be used. At this time, the length of the supporting reinforcing bar 7 (that is, the position of the end edge 8) is formed according to the position of the reinforcing bar in the axial direction at the corner of the reinforcing bar to be used. Further, the positions of the reinforcing bars in the other axial direction of the reinforcing bar can be marked in advance on the supporting reinforcing bars 7 by a method such as engraving or ink. Moreover, the position of the reinforcing bar in the direction orthogonal to the axial direction can be similarly marked on the first second main reinforcing bars 1 and 2.
[0022]
In the said Example, although the 2nd main reinforcing bars 2 and 2 were arrange | positioned and the jig 10 for reinforcing bar rods was formed in three-dimensional shape, the 2nd main reinforcing bar 2 can also be formed in planar shape as one. Yes (not shown).
[0023]
Moreover, in the said Example, the material can be suitably selected for the supporting reinforcement 7 according to purposes, such as a round bar or a deformed reinforcement (not shown). In addition to the reinforcing bars, tubular, plate-like members can also be used (not shown).
[0024]
Moreover, in the said Example, although the lattice 3 was made into the shape where the peak part 4 and the trough part 5 continued, it can also be arrange | positioned diagonally and can also be used as a lattice line (not shown). In this case, the intersection part of the adjacent bar material forms the peak part 4 and the valley part 5.
[0025]
[Example 2]
Based on FIG. 2, the Example applied to the small beam of the steel reinforced concrete structure by the rebar rod assembling method using the said rebar rod jig | tool 10 is demonstrated.
[0026]
(1) A steel frame is already constructed, and a reinforcing bar rod jig 10 is installed between the large beams 13 and 13 made of H-shaped steel at the small beam construction position. At this time, the second main reinforcing bars 2 and 2 of the reinforcing bar punching jig 10 are placed on the upper surface 14 of the upper flange of the large beam 13.
[0027]
At this time, the reinforcing bar punching jig 10 is arranged so that the first main reinforcing bar 1 is positioned at the center of the small beam in a planar position. The length D ₁ of the supporting rebar 7, previously Ryohaba, i.e. sets the length depending on the width of the upper shaft rebar.
[0028]
(2) Subsequently, the upper shaft rebars 16 and 16 for small beams are installed on the support rebar 7, and are temporarily fixed to the support rebars 7 and 7. At this time, if the upper shaft reinforcing bars 16a and 16a located at both ends are arranged along the second main reinforcing bars 2 and 2 in accordance with the positions of the end edges 8 and 8 of the supporting reinforcing bar 7, they can be easily placed at predetermined positions. Can be placed. Further, if the position of the shaft reinforcing bar 16 located in the intermediate portion is marked on the supporting reinforcing bar 7, the bar arrangement work can be further simplified and made accurate.
[0029]
(3) Subsequently, the lower shaft reinforcing bars 17 and 17 are arranged below the upper shaft reinforcing bars 16 and 16 (below the reinforcing bar punching jig 10). In this case, the lower shaft reinforcing bar 17 may be arranged at a rough position. Subsequently, the stirrups (shear reinforcing bars) 18 and 18 are attached around the vertical rebars 16 and 17, and the vertical rebars 16 and 17 and the stirrups 18 and 18 are bound and fixed to each other.
[0030]
The lower shaft reinforcing bar 17 and the loose reinforcing bar 18 can be attached in the same manner as in the prior art, either by attaching them first or at the same time.
[0031]
(4) As described above, the construction of the small beam 20 as the reinforcing bar is completed (FIGS. 2B and 2D). After that, as before, formwork is constructed and concrete is laid.
[0032]
[Example 3]
Based on FIG. 3, the Example applied to the reinforcing bar rod 30 for pillars by the assembling method of the reinforcing bar rod using the said reinforcing bar rod jig 10 is demonstrated.
[0033]
(1) The lengths of the supporting reinforcing bars 7 are set to L1 in accordance with the positions of the axial reinforcing bars of the two reinforcing bar rods 10 and 10 to be constructed in advance. The two rebar rod jigs 10 and 10 are arranged so that the first main rebar 1 faces each other and both supporting rebars face outward and substantially parallel to each other, and the first main rebars 1 and 1 are connected to the connecting material 11, 11 are fixed to each other and this state is maintained (FIGS. 3A and 3B). At this time, the length L1 is formed in accordance with the width of the side surface in the X direction of the reinforcing bar rod (the position of the axial reinforcing bar at the corner), and the length L2 is the width of the side surface in the Y direction (the position of the axial reinforcing bar at the corner). ) (FIG. 3B).
[0034]
(2) The connected reinforcing bar jigs 10 and 10 are placed on the base 22 (FIGS. 3A and 3B).
[0035]
(3) The shaft reinforcing bars 24, 24 on one side in the X direction are installed on the upper supporting reinforcing bars 7, 7, and the shaft reinforcing bars 24, 24 and the supporting reinforcing bars 7, 7 are bound and fixed. Four shaft reinforcing bars 24, 24 are arranged in parallel in the X direction of FIG. At this time, the shaft rebar at the corner 24a serves as a guide for the edges 8 and 8 of the support rebar 7 and the shaft rebars 24 and 24 at the intermediate portion serve as a guide if the positions thereof are previously marked on the support rebar. Moreover, by arranging along the second main reinforcing bars 2 and 2, it can be easily arranged at a predetermined position.
[0036]
(4) Similarly, the reinforcing bar scissors 10 and 10 are reversely rotated, and the axial reinforcing bars 25 and 25 on the other side in the X direction are similarly arranged and temporarily fixed to the supporting reinforcing bars. At the same time, while reinforcing the axial rebars 26 and 26 in the Y direction in FIG. 3D, the straps (shear reinforcing bars) 28 and 28 are attached so as to surround the axial rebars 25 and 26, and the axial rebars 24 and 25 are attached. , 26 and the straps 28, 28 are bound and fixed. As described above, the construction of the column reinforcing bar 30 is completed (FIGS. 3C and 3D). Note that spot welding or the like can be used instead of fixing the bundle.
[0037]
Further, in the above, by setting the lengths L1 and L2 to predetermined dimensions, it is possible to assemble a reinforcing bar rod for a beam in the same procedure (not shown).
[0038]
(5) Since the rebar rod 30 has the rebar rod jig 10 mounted therein, the rebar rod 30 is deformed even when it is lifted or supported by a heavy machine during transportation and construction. Or distortion can be prevented.
[0039]
(6) In the above-described embodiment, the rebar rod jigs 10 and 10 were placed on the base 22 sideways, but placed on the base 22 vertically (so that the main rebar is in a substantially vertical direction). The work can be performed, and further, the work can be performed in a state in which the reinforcing bar jigs 10 and 10 using the base 22 are suspended.
[0040]
Moreover, in the said Example, although both the reinforcing bar jigs 10 and 10 were joined by the connection material 11, if the position of L1 and L2 can be hold | maintained, a connection material, a method, etc. are arbitrary.
[0041]
Moreover, in the said Example, although the two rebar jigs 10 and 10 were installed facing each other so that each support rebar 7 and 7 might become substantially parallel, they should be connected and used at a substantially right angle. (Not shown). In addition, although two reinforcing bar jigs 10 and 10 are used, only one reinforcing bar jig is used as in the second embodiment, and one side of the column can be associated with the supporting reinforcing bar. (Not shown). Further, three or four rebar jigs 10 and 10 can be used (not shown).
[0042]
[Example 4]
Based on FIG. 4, an embodiment in which the reinforcing bar rod assembly method using the reinforcing bar rod jig 10 is applied to a wall reinforcing bar rod 36 will be described.
[0043]
(1) In this embodiment, a plurality of reinforcing bar rod jigs 10 and 10 having a configuration not using the supporting reinforcing bars 7 and 7 are used.
[0044]
(2) The vertical rebar 32 and the horizontal rebar 33 are arranged in a grid pattern on the predetermined base 22, and if necessary, both axial rebars are temporarily fixed so as not to move (FIG. 4A). ). The arranged vertical bars 32 and 32 and the horizontal bars 33 and 33 are referred to as a first grid bar 34. On the first lattice reinforcing bar 34, the reinforcing bar rod jigs 10 and 10 are arranged so that the second main reinforcing bar 2 is orthogonal to the horizontal axis reinforcing bar 33 (so that the second main reinforcing bar is along the vertical axis reinforcing bar 32) ( FIG. 4 (a)).
[0045]
(3) Subsequently, the contact points of the second main reinforcing bar 2, the horizontal axis reinforcing bar 33, and the vertical axis reinforcing bar 32 are welded to fix the first lattice reinforcing bar 34 and the reinforcing bar rod jigs 10 and 10 together ( FIG. 4 (a)).
[0046]
(4) Subsequently, the other horizontal axis reinforcing bars 33 and 33 are arranged between the first main reinforcing bars 1 and 1 of the reinforcing bar jigs 10 and 10 so as to be orthogonal to the first main reinforcing bar 1, and the horizontal axis reinforcing bars are arranged. The vertical reinforcing bars 32 and 32 are arranged so as to be orthogonal to 33 and 33. At this time, the longitudinal rebar 32 can be arranged with the first main reinforcing bar 1 as a guide. Here, the second lattice reinforcing bar 35 is constituted by the vertical axis reinforcing bar 32 and the horizontal axis reinforcing bar 33 on the first main reinforcing bar 1.
[0047]
Subsequently, the contact points of the first main reinforcing bar 1, the horizontal axis reinforcing bar 33, and the vertical axis reinforcing bar 32 are welded, and the first lattice reinforcing bar 34 and the reinforcing bar rod jigs 10 and 10 are fixed integrally.
[0048]
(5) As described above, the first lattice reinforcing bar 34, the second lattice reinforcing bar 35, and the reinforcing bar rod jigs 10 and 10 are integrally fixed to form a so-called double reinforcing bar rod 36 for a wall. . In the above description, the present invention is applied to the assembly of the reinforcing bar for the wall, but it can be applied to the reinforcing bar for the floor in the same procedure.
[0049]
(6) In the above embodiment, the vertical bar 32 and the horizontal bar 33 are arranged and then fixed to the reinforcing bar jig 10, but the vertical bar 32 and the horizontal bar 33 are fixed in advance and the lattice bar 34 is fixed. , 35 can be formed and fixed to the reinforcing bar punching jigs 10 and 10 (not shown).
[0050]
Moreover, in the said Example, although the vertical axis | shaft reinforcement 32 and the horizontal axis reinforcement 33 were mounted on the base 22, the jig 10 for reinforcing bar rods on the base 22, with the 1st main reinforcement 1 facing up, 10 can be placed in parallel, and the second lattice reinforcing bar 35 can be fixed to the reinforcing bar punching jig 10 (first main reinforcing bar 1) as a guide (not shown). In this case, the fixed second lattice reinforcing bar 35 and the reinforcing bar punching jig 10 are turned upside down to fix the first lattice reinforcing bars on the second main reinforcing bars 2 and 2 of the reinforcing bar punching jig 10.
[0051]
Moreover, in the said Example, although the reinforcement rod jig | tool 10 which does not use the support member 7 was used, it is also possible to use the reinforcement rod jig | tool 10 (FIG. 1) which fixed the support member 7 of the said Example 1. FIG. Yes (not shown). In this case, the adjacent reinforcing bar jigs 10 and 10 can be integrally fixed using the support member 7 and handled (not shown).
[0052]
【The invention's effect】
Since the support member is attached to the truss composed of the first second main reinforcing bar and the lattice bar, there is an effect that the reinforcing bar rod can be assembled accurately and easily using the support member and the first second main reinforcing bar as a guide. Moreover, since the panel-shaped reinforcing bar rod assembled on a horizontal surface such as on the ground or a slab on the site can be moved and incorporated in a predetermined installation place, there is an effect that the bar arrangement work can be greatly simplified. In addition, when reinforcing bars are suspended by heavy machinery or moved manually, the reinforcing bar bar is retained by the reinforcing bar bar jig so that deformation and distortion of the bar bar can be prevented. .
[Brief description of the drawings]
1A and 1B show a reinforcing bar scissors according to the present invention, in which FIG. 1A is a front view, FIG. 1B is a side view, and FIG.
FIG. 2 is an embodiment in which the reinforcing bar jig according to the present invention is used for construction of a small beam, (a) is a front view of a state where the jig is installed on a large beam, (b) is a side view, and (c) It is the front view of the state which assembled the small beam, (d) It is a side view similarly.
FIG. 3 shows an embodiment in which the reinforcing bar jig according to the present invention is applied to assembling a pillar. FIG. 3 (a) is a front view showing a state in which jigs are arranged, (b) a side view, and (c) assembling a reinforcing bar. (D) It is a side view similarly.
FIG. 4 is an embodiment in which the reinforcing bar rod jig of the present invention is applied to the assembly of a wall, (a) is a front view of a state in which jigs are arranged, and (b) is a front view of a configured reinforcing bar rod. .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st main rebar 2 2nd main rebar 3 Lattice rebar 4 Lattice reed peak 5 Lattice reed trough 7 Support rebar 8 Support rebar edge 10 Reinforcing bar jig 11 Connecting material 13 Large beam 14 Large beam upper surface 16 Upper shaft reinforcement 16 Upper shaft reinforcement (corner)
17 Lower shaft reinforcement (corner)
18 Stirrup (shear reinforcement)
20 Small beam (rebar bar)
22 base 24 shaft rebar 25 shaft rebar 26 shaft rebar 28 band rebar (shear reinforcement)
30 Reinforcing bar for column 32 Vertical axis reinforcing bar 33 Horizontal axis reinforcing bar 34 Lattice reinforcing bar 35 Lattice reinforcing bar 36 Reinforcing bar for wall

Claims (4)

A method for assembling a reinforcing bar rod, comprising constructing a small beam as a reinforcing rod rod according to the following procedure.
(1) The first main reinforcing bar and the second main reinforcing bar which are arranged in parallel are joined by a lattice bar, and a support member is joined perpendicularly to the outside of the second main reinforcing bar to constitute a reinforcing bar rod jig.
(2) Between the parallel beams, the rebar rod jig is installed with the second main reinforcing bar facing up, and the second main reinforcing bar is placed and fixed on the large beam.
(3) On one side of the supporting member, a shaft bar located on one side of the beam is placed and placed along the second main reinforcing bar.
(4) The other side of the rebar located below the beam is arranged below the rebar jig, and a shear reinforcement is attached to the one side and the other side of the rebar. A small beam is formed by binding the shaft reinforcement and the shear reinforcement. Reinforcement rod assembly method characterized by constructing the reinforcement rod by the following procedure.
(1) The first main reinforcing bar and the second main reinforcing bar that are arranged in parallel are joined by a lattice bar, and a support member is joined orthogonally on the outer side of the second main reinforcing bar to constitute a reinforcing bar rod jig. .
(2) to the support member of the reinforcing bar cage jig, placing temporarily fixed to one side of the axial reinforcement rebar cage erection placed to and along the second main reinforcing bars.
(3) the in the outer direction of the first main reinforcing bars, in parallel to the axial reinforcement of the one side, with arranging the axial reinforcement of the other side of the reinforcing steel cage, fitted with a shear reinforcement in the two axial reinforcement, the one by tying the axial reinforcement and the shear reinforcement of the side the other side constitutes the reinforcement cage. The method of assembling a reinforcing bar rod according to claim 2, wherein the method is configured as follows.
(1) The first main reinforcing bar and the second main reinforcing bar that are juxtaposed are joined by a lattice bar, and a support member is joined orthogonally to the outside of the second main reinforcing bar, and the first rebar rod jig and the second Construct a two-rebar rod jig.
(2) The first reinforcing bar rod jig and the second reinforcing rod rod jig are opposed to the first main reinforcing bar of the both reinforcing rod rod jigs, and the support member is substantially parallel or substantially perpendicular. Arrange so that
(3) The first main reinforcing bars are fixed to each other.
(4) as above manner first second reinforcing bar cage jig rebar cage jig of claim 2 formed by the support member of the second reinforcing bar cage jig as a supporting member according to claim 2 The steps (2) to (3) according to claim 2 are executed . A method of assembling a reinforcing bar rod, comprising building a wall as the reinforcing rod rod according to the following procedure.
(1) The first upper main reinforcing bar and the second main reinforcing bar which are arranged in parallel are joined by a lattice bar, and a support member is joined perpendicularly to the outside of the second main reinforcing bar to constitute a reinforcing bar rod jig. . The supporting members of the adjacent reinforcing bar jigs are fixed in parallel with the reinforcing bar jigs.
(2) The first grid reinforcing bar is placed on the main reinforcing bar side of any of the parallel reinforcing bar punching jigs with the main reinforcing bar as a guide, and the main reinforcing bar and the first grid reinforcing bar that are in contact are fixed. ,
(3) A second grid reinforcing bar is placed on the other reinforcing bar side of the juxtaposed reinforcing bar jig with the main reinforcing bar as a guide, and the main reinforcing bar and the second grid reinforcing bar that are in contact with each other are fixed.
(4) The rebar bar is configured as described above.

Images