JPH06294214A - Pillar reinforcement preassembling jig - Google Patents

Abstract

PURPOSE:To improve ground assembly accuracy and working efficiency of pillar reinforcement by providing a pillar base part fixing supporting frame, a capital part supporting frame, and a head part hanging jig. CONSTITUTION:One-side ends of the lowermost part, the middle part, and the uppermost part of pillar reinforcement 1 are respectively inserted in order into the sleeve pipes 11 of a reinforcement fixing plate 12, and the head part side of the pillar reinforcement 1 are horizontally supported with a lower supporting rod 21 and an upper supporting rod 22. Next a belt reinforcement 3 is wound around the outside of the prismatically arranged pillar reinforcement 1 so as to assemble a pre-assembled reinforcement. Next a capital part hanging jig 30 is fitted to the head part of the preassembled reinforcement, a hanging wire is fitted to the hanger 32 so as to hang it with a crane, and the head part of pillar reinforcement 1 are inserted into the pillar reinforcement holding holes of the jig 30. A grip 6 is fitted to the base part of the pillar reinforcement 1, and the grip 6 and hanger 32 are connected together through a slinging wire. Further the supporting rod 22 is removed, the head part of the pillar reinforcement 1 is hang with the crane, and hence the reinforcement fixing plate 12 is rotated from the vertical to the horizontal state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column rebar pre-assembly jig which is convenient for pre-assembling rebars such as columns and beams in the ground beforehand.

[0002]

2. Description of the Related Art Conventionally, when a heavy reinforcing bar is used for a pillar or a beam, the reinforcing bar is generally assembled on the ground, and the assembled reinforcing bar (pre-assembled reinforcing bar) is lifted by a lifting machine to a predetermined position. The groundwork that sets and joins is done. For example,
If it is a column reinforcing rod of a reinforced concrete column, a plurality of column reinforcing rods 1 are provided at predetermined predetermined intervals L1 as shown in FIG.
~ L4 is arranged and wound, and the stirrup is wound around this, and if necessary, the position of the column rebar is fixed by using a bracing bar to assemble the pre-assembled rebar.

[0003]

However, when initially assembling the column rebar, it is difficult to accurately hold the long and heavy rebars at the predetermined positions with the above-mentioned predetermined intervals, and the work efficiency is not so good. It was Therefore, an object of the present invention is to provide a jig for a pillar rebar framing, thereby improving the accuracy of the pillar rebar framing and working efficiency, and solving the conventional problems.

[0004]

Means for Solving the Problems The present invention for achieving the above object is a jig for a pre-assembly for assembling a column rebar with a ground structure, the column rebar having an inner diameter larger than the outer diameter of the column rebar. A column base fixing support stand that rotatably supports a reinforcing bar fixing plate having a plurality of types of sheath pipes, into which the leg ends of which are inserted, are attached at a predetermined pitch, and the reinforcing bar fixing. A column head support frame with a lower support rod that supports the head side of the column rebar that the plate vertically supports in a vertical position and a detachable upper support rod, and the distance between the column rebars is maintained through the column rebar A head-hanging jig having a through hole and a hanging hand through which a hanging wire is inserted.

[0005]

[Operation] With the rebar fixing plate of the column base fixed support base in the vertical position, the leg end of the column rebar is inserted into each sheath pipe, and the head end side is supported by the column head support base for horizontal support. To do. When hoisting the grounded ones, the pillar rebars are passed through the insertion holes of the head hanging jig and the intervals between the pillar rebars are maintained and the wires are hoisted. At that time, as it stands up, the reinforcing bar fixing plate follows while rotating toward the horizontal position. The intervals between the reinforcing bars are naturally maintained according to the intervals between the sheath pipes, and the upper and lower ends of the reinforcing bars are displaced at a height according to the length of the sheath pipes to form a predetermined step. In this way, the disturbance of the lower part of the pillar during lifting is prevented.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show an embodiment of a jig for assembling a column reinforcing bar tip according to the present invention. This jig basically comprises a column base fixed support pedestal 10 and a column head support pedestal 20. It is provided with a pillar head hanging jig 30.

As shown in FIG. 2, the leg fixing support base 10 has a reinforcing bar fixing plate 12 in which a plurality of sheath pipes 11 are erected at a predetermined pitch, and the reinforcing bar fixing plate 12 is positioned vertically and horizontally. And a pedestal 13 that rotatably supports the position. The sheath pipe 11 is, as shown in FIG.
The legs have an inner diameter large enough to be easily inserted and removed, and a bottom plate 14 is fixed to one end. Its bottom plate 14
The bolt 15 attached to the bolt hole 1 of the reinforcing bar fixing plate 12
6 through the washer 17a on the bolt end protruding from the back side.
Each sheath pipe 11 is fixed to the reinforcing bar fixing plate 12 by screwing and tightening the nut 17b via the.

By the way, as shown in FIG. 7, there are various intervals between the column reinforcing bars 1 embedded in one reinforced concrete column. In the illustrated example, twelve column rebars 1 are embedded along a square contour line, and the positional intervals of the column rebars 1 at the four corners are common to L1, but the column rebar intervals in the middle are L2, L3. It is not constant in a combination of different dimensions such as L4. Therefore, in the case of this embodiment, the mounting interval of the intermediate sheath pipe 11 is not fixed, and the bolt hole is formed as an elongated hole 16A so that the bolt 15 can slide. The space between the sheath pipes 11 can be changed by the long holes 16A, and one rebar fixing plate 12 can accommodate a plurality of types of rebar arrangement.

The sheath pipe 11 is composed of a long pipe 11A and a short pipe 11.
Two types, B, are used. A pin P is inserted inside the long tube 11A to raise the bottom. As a result, the column rebars 1 of the same length, one end of which is inserted into the long and short sheath pipe 11, are alternately arranged in the axial direction by exactly the length from the pipe bottom to the pin P, and the ends become steps. I am trying. A rotary support rod 18 made of a round bar is fixed to the back surface of the reinforcing bar fixing plate 12, and both ends thereof are projected to the outside of the plate.

On the other hand, at the tip of the column 13a of the mount 13,
Support rod receiver 1 for rotatably supporting the rotary support rod 18
3b is attached. Further, a vertical support rod 19 is provided at an intermediate portion of the support column 13a to contact the reinforcing bar fixing plate 12 to support the reinforcing bar fixing plate 12 in a vertical posture. As shown in FIGS. 1 and 4, the column head support frame 20 is located at the bottom of the plurality of column rebars 1 supported laterally by the reinforcing bar fixing plate 12 of the column base fixing support frame 10. It is provided with a lower support rod 21 that supports the head side of an object, and an upper support rod 22 that also supports the head side of the uppermost one of a plurality of pillar rebars 1. The lower support rod 21 is a mount 2
It is suspended and mounted and fixed between the pair of two support columns 24, 24. The upper support rod 22 includes the columns 24 and 2
It is detachably supported and hung by a support rod receiver 25 having a U-shaped cross section provided on the top of 4, and can be easily pulled out by sliding it laterally.

The column head suspension jig 30 is a rectangular frame body as shown in FIG. 5, and has intervals L1 to L between the column rebars 1.
A plurality of column reinforcing bar holding holes 31 for holding 4 on the head side,
And a loop-shaped hanging hand 32 through which a hanging wire fixed to a corner portion of the frame is passed. Although the frame body in this embodiment is formed of a flat plate, it may be formed of other angle steel or grooved steel. Further, the column reinforcing bar holding hole 31 located in the middle of the corner is a long hole so that it can correspond to any of the intervals L1 to L4 between the column reinforcing bars 1.

Next, the operation will be described. When assembling the column reinforcing bar 1, the reinforcing bar fixing plate 12 of the column base fixing and supporting base 10 is rotated to be in a vertical posture as shown in FIG. Further, the column head support frame 20 is arranged on the head side of the column rebar 1 at a distance from the column base fixed support frame 10. First, the upper support rod 22 of the column head support frame 20 is removed, and one end of the four column rebars 1 at the bottom is attached to the rebar fixing plate 1.
2 are inserted into the sheath pipes 11 at predetermined positions. The head side of each inserted column rebar 1 is supported substantially horizontally by the lower support rod 21 of the column head support frame 20. Since the column rebar 1 inserted into the horizontal sheath pipe 11 falls down and hits and supports the lower side of the inner wall of the pipe (see FIG. 3), the thickness of the sheath pipe 11 has a sufficient margin with respect to the column rebar 1. However, the vertical distance between the column reinforcing bars 1 does not shift.

Next, one ends of the four column rebars 1 in the middle are inserted into the sheath pipes 11 at predetermined positions. Next, after the upper support rods 22 are attached to the column head support frame 20, one ends of the four uppermost column rebars 1 are inserted into the sheath pipes 11 at predetermined positions of the rebar fixing plate 12, respectively, The head side of each column rebar 1 is supported substantially horizontally by the upper support rod 22. The head portion of the pillar rebar 1 in the middle portion holds the upper pillar, the middle portion, the bottom portion, and the four outer pillar rebars 1 lined up and down by the reinforcing bar holding hardware 2.

The stirrups 3 are wound around the outside of the columnar reinforcing bars 1 arranged in the prismatic shape in this way. If necessary, bracing is used to fix the position of the column rebar 1 to assemble the pre-assembled rebar. On the head of the pre-assembled rebar, a stilt head hanging jig 3
Attach 0. The pedestal head hanging jig 30 attaches the hanging wire 4 to the hanging hand 32, and hangs vertically with the crane 5.
Pass the head of the column reinforcing bar 1 through the column reinforcing bar holding hole 31,
The intervals L1 to L4 are maintained. Further, clips 6 are attached to the four corners of the pre-assembled reinforcing bars near the legs of the column reinforcing bars 1. The clip 6 and the corresponding hanging hand 32 of the stanchion hanging jig 30 are connected to each other by a hanging wire 7.

When preparation for hoisting is completed in this way, the upper support rod 22 of the column head support cradle 20 is pulled out and removed, and the crane 5 hoists the head. As the one assembled sideways on the ground rises, the column base fixed support pedestal 10
The rebar fixing plate 12 rotates from the vertical position to the horizontal position with the rotation supporting rod 18 as the rotation axis. Therefore, the leg portion side of each pillar rebar 1 is also fixed at the predetermined intervals L1 to L4, and the leg portions of the rebar are not disturbed during lifting as in the conventional case. Further, the step D accurately displaced to a predetermined dimension in the axial direction of each column rebar 1 is also kept constant.

Therefore, when a plurality of pre-assembled column rebars are first connected on top of the pre-assembled column rebars (main rebars) standing upright at a predetermined position, the joints of the upper and lower main rebars (lower main rebars) are connected. The head end of the upper leg and the leg end of the upper main muscle) can be exactly matched, and no connection failure occurs. According to this embodiment, the required dimensional accuracy can be accurately maintained, and the base rebar 1 can be extremely easily grounded, and the case where a plurality of pre-assembled column rebars are successively stacked and connected from the bottom Since it is not necessary to build a reinforcing bar scaffold to hold the position, the construction efficiency is remarkably improved.

Further, the sheath pipe 11 at the intermediate position which is attached to the reinforcing bar fixing plate 12 of the column base fixing and supporting base 10 is provided with bolts 15.
Since it is possible to easily adjust the interval by loosening the screw and sliding it along the long hole 16A, it is possible to immediately cope with a plurality of different intervals of the column rebar 1.

[0018]

As described above, according to the present invention, a plurality of kinds of sheath pipes having an inner diameter larger than the outer diameter of the column rebar and into which the leg ends of the column rebar are inserted are attached at a predetermined pitch. The column base fixed support frame that rotatably supports the reinforcing bar fixing plate at least between the vertical position and the horizontal position, and the head side of the column reinforcing bar that the reinforcing bar fixing plate laterally supports at the vertical position. A head-hanging jig having a pillar-head supporting frame having a lower supporting rod for supporting and a detachable upper supporting rod, an insertion hole for maintaining a distance between the pillar reinforcing bars through the column reinforcing bars, and a suspender for passing a hanging wire. Since it is a jig for assembling pillar rebars with and, the distance between the pillar rebars and the offset length of the upper and lower joints can be accurately maintained at the specified dimensions to facilitate ground assembly, and the pillars during lifting Distortion of the lower rebar can be prevented, and the column rebar assembly Effect that greatly contributes to the improvement of accuracy and efficiency.

[Brief description of drawings]

FIG. 1 is a side view showing a mode of use of a jig for assembling a column reinforcing bar tip according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a jig component portion of FIG.

FIG. 3 is a cross-sectional view showing a mounting structure of the component of FIG.

FIG. 4 is an enlarged perspective view of a jig component portion of FIG. 1.

5 is an enlarged perspective view of a jig component portion of FIG. 1. FIG.

FIG. 6 is an explanatory view of the operation of the jig shown in FIG.

FIG. 7: (a), (b), (c) of the arrangement of the column rebar,
It is a top view which illustrated four kinds of patterns of (d).

[Explanation of symbols]

 1 Pillar Reinforcing Bar 4 Suspending Wire 10 Pillar Leg Fixed Supporting Stand 11 Saya Tube 12 Reinforcing Bar Fixing Plate 20 Pillar Head Supporting Stand 21 Lower Supporting Rod 22 Upper Supporting Rod 30 Head Lifting Jig 32 Lifter

Claims (1)

[Claims] 1. A jig for a pre-assembly for assembling a pillar rebar in a ground structure, wherein a plurality of kinds of sheath pipes having an inner diameter larger than an outer diameter of the pillar rebar and into which a leg end of the pillar rebar is inserted are predetermined. Of the column base fixed support frame that rotatably supports the reinforcing bar fixing plate attached at a pitch of at least between the vertical position and the horizontal position, and the column reinforcing bar that the reinforcing bar fixing plate supports sideways at the vertical position. A head having a column head support frame having a lower support rod for supporting the head side and a detachable upper support rod, an insertion hole for maintaining a space between the column rebars through the column rebars, and a sling for passing the suspension wire. A jig for assembling a column reinforcing bar tip, which is provided with a hanging jig.