JPH08226129A - Form for reinforcement preassembly and slope frame construction method using the form - Google Patents

Abstract

PURPOSE: To maintain higher stability for a filler, immediately proceed to a hardener spraying or placing process in principle simply via the placement of a form on a reinforcement cage, and ensure high workability. CONSTITUTION: Regarding a reinforcement preassembly form where a reinforcement cage 50 is first provided and porous plates 1 and 1 are arranged at the right and left sides thereof, connecting rods 10 and 11 extended at least from two upper and lower levels from the cage 50 are jointed to the corresponding plates 1 and 1. In addition, the rods 10 and 11 are integrally jointed to each other via a vertical joint rod 20 and an interval holding rod 30 is laid above the cage 50 for connecting the right and left plates 1 and 1 to each other. In this case, the forward ends 10A and 11A of the rods 10 and 11 are formed like a downward hook, and are connected to the main reinforcements 51 and 52 of the cage 50 from an upper level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for stabilizing a slope by constructing a legal framework, and more particularly to a rebar tip assembly formwork and a method for constructing a legal frame using this formwork.

[0002]

2. Description of the Related Art A slope frame construction method represented by a so-called free frame construction method is widely used because it has a high deterrent force on the slope when the slope is large.

In order to construct a legal frame of this kind, a mold made of a wire mesh is typically used. Generally, the left and right wire mesh plates are rotatably connected to each other by connecting spacers. It can be folded during transportation.

In the case of using such a formwork, since the lower connecting spacer is provided, after installing the formwork, between the left and right wire mesh plates, on an unstable slope as a work scaffold,
It was forced to assemble the rebar cage at a predetermined height position from the slope, and the workability was significantly reduced.

On the other hand, Japanese Examined Patent Publication No. 5-38096 proposes a rebar tip assembly formwork. This will be described with reference to FIG. 1. A perforated plate 100, 100 is connected by a horizontal stirrup 101, and a formwork in which vertical stirrups 102, 102 are fixed on both sides of the horizontal stirrup 101 is prepared. On the other hand, the rebar cage 104 in which the upper main bar 104A and the lower main bar 104B are integrated by the slatter lap bar 104C
Is first arranged on the slope by the anchor rebar 103, and then the above-mentioned form is brought in to place the horizontal bar 101 on each upper main bar 104A, 104A ... Group and the vertical bar 1
02 and 102 are arranged on the outside of the side surface of the slater lap muscle 104C.

[0006]

The formwork for the rebar tip assembly is extremely excellent in eliminating the above-mentioned poor workability.

However, it has been found that this prior art has a fundamental problem in actual use. That is, first, when the formwork is installed, the horizontal streak 10
1 is placed on each upper main bar 104A, 104A ... Group, but if the upper main bars 104A, 104A ... Group are accurately arranged on the same line, there is no problem, but in reality it is irregular, As a result, some protruding upper main bars 1
It is impossible to stably arrange the formwork on the slope with 04A as a boundary.

Secondly, the vertical ribs 102, 102 are arranged on the outer side of the side surface of the slater lap rib 104C, and to move to the left and right of the cross section of the formwork to some extent,
Positioning to the center in the left-right direction is difficult. Moreover, in FIG. 4 of the above publication, the cover thickness L ₂ is defined as the distance between the perforated plate 100 and the outer surface of the vertical bar 102, but in reality, the cover thickness is the rebar cage. Even in view of the distance between 104 (slater lap streak 104C in the illustrated example) and the perforated plate 100, in the prior art, the vertical streaks 102, 102 are merely a measure for defining the cover thickness. There is no such thing.

Thirdly, the horizontal bars 101 are connected to the respective upper main bars 104.
A, 104A ... Reinforcing bar basket 1 because it is placed on the group
04 is, for example, as shown in FIG. 4 of the publication, in order to stably fix the mold separately to the reinforcing bar cage 104, the vertical reinforcing bar 102 and the reinforcing bar cage 104 are connected by the binding muscles 105.
It is necessary to connect the perforated plate 100 with the perforated plate 100.

However, this work is a new work after the installation of the formwork, resulting in an increase in work time. Moreover, if this work is omitted, when the mortar or concrete is sprayed or placed into the formwork and filled, the weight is added to the filling, and the result is that the lower part of the formwork expands to the hem. Become. With respect to such a problem, No. 7 of the publication
As shown in the figure, the lower part of the vertical stripe 102 and the perforated plate 1
It seems that it is effective to preliminarily connect 00 with an auxiliary muscle, but since the perforated plate 100 exhibits a certain degree of flexibility, basically, a fulcrum that opposes the filler is Only at the intersection of the horizontal streaks 101 and the vertical streaks 102, there is almost no effect of preventing the deformation of the mold by using the filling material.

[0011] Therefore, the object of the present invention is to show more excellent stability to the filler while basically securing the advantage of the rebar pre-assembly formwork effective from the viewpoint of improving workability, and basically, Simply by installing the form on the rebar cage, you can immediately move to spraying or placing the hardened material, which is excellent in workability, and the form can be positioned extremely accurately. To provide.

[0012]

With reference to the reference numerals of the drawings shown in FIG. 2 and subsequent figures, in the reinforcing bar front assembly formwork of the present invention which has solved the above-mentioned problems, the rebar cage 50 is first arranged at a predetermined position, and In the rebar tip assembly formwork in which the perforated plates 1 and 1 are installed on the left and right sides, at least two upper and lower stages of each perforated plate 1 and 1, connecting bars 10 and 11 for main rebar extending to the rebar cage 50. Are fixed to the corresponding perforated plates 1 and 1, and these connecting bars for main rebar 10,
11 are integrally connected by a vertical connecting bar 20, and above the rebar cage 50, a space holding bar 30 for connecting the left and right perforated plates 1 and 1 is provided.
Both ends of are connected to the perforated plates 1, 1 so as to be rotatable about a vertical axis, and the main reinforcing bar connecting bars 10 and 11 have hook-shaped tips 10A and 11A directed downward. 10A and 11A are the main bars 5 of the rebar cage 50.
1, 52 are configured to be locked from above, and a plurality of the main reinforcing bar connecting bars 10, 11, the vertical connecting bars 20, and the spacing holding bars 30 are arranged in the longitudinal direction. is there.

Here, each of the main reinforcing bar connecting bars 10 and 11 can be fixed to the corresponding perforated plates 1 and 1 so as to be rotatable about the vertical axis.

Further, the longitudinal positions of the spacing bar 30 can be different from the longitudinal positions of the main reinforcing bar connecting bars 10 and 11 and the vertical connecting bar 20.

Main reinforcing bar connecting bars 10 and 11, vertical connecting bar 20
Further, the longitudinal positions of the distance maintaining bars 30 may be substantially the same, and in this case, the vertical connecting bars 20 extend upward and are integrally connected to the distance maintaining bars 30. It is suitable.

The stability is further enhanced by the structure in which the main bars 51, 52 of the reinforcing bar cage 50 are sandwiched between the tips of the main reinforcing bar connecting bars 10, 11 and the vertical connecting bars 20.

Further, a vertical connecting bar 20 is provided inside the tips 10A, 11A of the main reinforcing bar connecting bars 10, 11 and a second vertical connecting bar 21 is provided on the perforated plate side of the vertical connecting bar 20 for vertical connection. Tip 20A of the connecting bar 10, 11 for the reinforcing bar 20 and the main rebar,
It is configured to sandwich the main bars 51, 52 of the rebar cage 50 between the second vertical connecting bar 21 and the 11A, and the second vertical connecting bar 21 integrally connects the space holding bar 30 and any one of the main bar connecting bars 10, 11 to each other. It can be configured as shown in FIG. 10 (see FIG. 10).

On the other hand, the tips 1 of the main reinforcing bar connecting bars 10 and 11
Locking muscles 10B, 1 directed inward from 0A, 11A
1B may be integrated, and the main bars 51 and 52 of the rebar cage 50 may be sandwiched between the locking bars 10B and 11B and the tips 10A and 11A of the main bar connecting bars 10 and 11 (FIG. 11). reference).

On the other hand, in the method for constructing the method frame of the present invention, as shown mainly in FIG. 12, the above-mentioned form is used to assemble the rebar cage 50 in advance at a predetermined height position on the slope. After that, while covering the form from above, the main reinforcing bar connecting bar 10,
The hook-shaped tip portions 10A and 11A of 11 are connected to the rebar cage 50
It is characterized in that the main bars 51, 52 are locked from above and then the space between the perforated plates 1, 1 is filled with the hardening material M.

[0020]

As is apparent from the examples described below, the formwork for the reinforcing bar front assembly of the present invention greatly improves the workability as in the conventional case. Moreover, the following operational effects are mainly exhibited even when compared with the formwork according to the prior art.

(1) Increase in rigidity of the formwork itself Since the main reinforcing bar connecting bars 10 and 11 which are fixed in at least the upper and lower two stages of the perforated plate 1 are integrally connected by the vertical connecting bar 20, The perforated plate 1 which is deformed by itself is formed by the main reinforcing bar connecting bars 10 and 11 and the vertical connecting bar 20.
Around one side, a rectangular frame is formed, and rigidity is increased.

(2) Formwork can be Arranged Regardless of Position of Stirrup Muscle In the prior art in which the transverse reinforcement of the reinforcing bar cage is disposed on the upper main reinforcement, if it happens to be located on the stirrup reinforcement, it will be separated from other transverse reinforcements. Due to the relationship, the installation becomes unstable as it does not follow the slope of the slope, whereas in the present invention, the space holding bar 30 that connects the left and right perforated plates 1, 1 is provided above the rebar cage 50. Therefore, stable installation is possible without any of the above-mentioned instability factors.

(3) The main rebar connecting bars 10 and 11 capable of preventing the deformation of the form due to the filling of the filling material are provided at the tip portions 10A and 11 thereof.
A has a hook shape that faces downward, and these tip portions 10
Since A and 11A are configured to be locked to the main bars 51 and 52 of the rebar cage 50 from above, a filling material (hardening material)
With the filling, the force that causes the hem expansion to the outside acts on the lower part of the form, and the expansion force causes the engagement of the hook-shaped tip portions 10A and 11A to the connecting bars 10 and 11 for the main rebar. Since the stopped state is opposed, as a result, the hem spread does not occur,
The deformation of the mold is prevented.

(4) Improvement of workability and speedup When the formwork is installed on the rebar cage 50 installed on the slope in advance, the hook-shaped tip portion 1 of the main rebar connecting bars 10 and 11 is provided.
Since 0A and 11A can be connected to the reinforcing bar cage 50 only by locking the main reinforcing bars 51 and 52 of the reinforcing bar cage 50 from above, all of them can be separately attached by a binding bar (number line) as in the prior art. It is not necessary to connect the intersecting parts, and in the present invention, it is possible to immediately shift to spraying or setting of the curing material by simply binding the appropriate places after the formwork is installed, so that workability can be accelerated. .

(5) Accurate Positioning of Formwork A formwork of a predetermined size is prepared in advance for the rebar cage 50 of a predetermined size, and the hook-shaped tip portions 1 of the connecting bars 10 and 11 for the main rebar are prepared.
Since 0A and 11A are locked to the upper and lower main bars 51 and 52 of the rebar cage 50, the main bar connecting bar 1 is arranged in the left-right direction.
0 and 11 determine the positions of the perforated plates 1 and 1, and as a result, accurately define the cover thicknesses of the top and side hardened materials of the perforated plates 1 and 1 with respect to the rebar cage 50.

Moreover, the upper and lower main bars 51, 52 of the rebar cage 50.
The mold is not displaced to the left or right due to the locking to the position, and the position is stable without swinging clockwise or counterclockwise in the cross section, and the mold can be accurately positioned. .

(6) Freedom of Design According to Purpose In the prior art, it is a condition that the horizontal bar is attached downward from the upper end of the perforated plate by the top concrete cover thickness dimension. As a result, as described in the section (2), when it happens to be located in the stirrup muscle, it does not follow the slope of the slope due to the relationship with other transverse muscles and the installation becomes unstable. Since the distance maintaining streak 30 of the present invention is mainly intended to connect the perforated plates 1 and 1, it does not define the cover thickness dimension and does not support the load of the perforated plates 1 and 1. , Reinforcing bar connecting bar 1 for longitudinal direction
It is possible to arrange them independently of the arrangement positions of 0, 11 and the vertical connecting streak 20, and it is possible to make the number small (or large) in some cases. Further, shifting the position in the longitudinal direction may prevent displacement of the perforated plate 1 in the slope direction, as will be described later, and in order to further increase the rigidity of the mold with a minimum amount of members, The vertical connecting bar 20 can be extended upward and connected integrally with the spacing holding bar 30 at the same position with respect to. Thus, various designs according to the purpose are possible.

[0028]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 2 shows an example of the mold of the present invention,
FIG. 3 shows an example of the rebar cage 50, and FIGS. 4 and 5 show a state in which it is installed on the slope.

In the formwork of the present invention, the side faces of the formwork are formed by perforated plates 1 and 1 made of metal mesh or the like knitted in an appropriate shape and size, and extend to the rebar cage 50 at least in two upper and lower stages. The main reinforcing bar connecting bars 10 and 11 are fixed to the corresponding perforated plates 1 and 1. As this fixing mode, it is possible to completely fix, but in order to reduce the bulk by folding during transportation, that is, by folding so that the perforated plates 1 and 1 overlap each other, as shown in the drawing, It is desirable that the base end portions of the main reinforcing bar connecting bars 10 and 11 have loop-like hook shapes and are rotatably connected and fixed to the corresponding perforated plates 1 and 1 about the vertical axis.

The main reinforcing bar connecting bars 10 and 11 are integrally connected by a vertical connecting bar 20, for example, by welding. At a position corresponding to a position above the rebar cage 50, the space holding bar 3 that connects the left and right perforated plates 1, 1
0 is provided. In the same manner, in consideration of the transportability, also in the space holding muscle 30, as shown in the drawing, both end portions thereof are formed into loop hook shapes, and the corresponding perforated plate 1,
1 is rotatably connected and fixed to a vertical axis.

The leading end portions 10A and 11A of the connecting bars 10 and 11 for the main reinforcing bars are bent 90 degrees in the embodiment to form a hook shape directed downward.
A is configured to be locked to the main bars 51 and 52 of the reinforcing bar cage 50 from above.

Main reinforcing bar connecting bars 10 and 11, vertical connecting bar 20
Further, a plurality of the spacing holding muscles 30 are arranged in the longitudinal direction.

In the illustrated example, the main reinforcing bar connecting bar 1
0, 11, the longitudinal connecting bars 20 and the spacing holding bars 30 are substantially the same in the longitudinal direction, and the vertical connecting bars 20 extend upward and are integrally connected to the spacing holding bars 30, for example, by welding. Has been done.

The rebar cage 50 is formed by arranging two upper main bars 51 and two lower main bars 52 at a square corner position and assembling them by a stirrup bar 54. If necessary, for example, depending on the size of the cross section of the legal frame, the intermediate main bar 5 is provided between the upper main bar 51 and the lower main bar 52.
3 may be provided, or an intermediate main bar may be provided between two upper main bars 51 or between two lower main bars 52.

In the former case where the intermediate main reinforcing bar 53 in the height direction is provided, the main reinforcing bar connecting bar 10 or 1 is correspondingly provided.
A connecting bar for the main reinforcing bar similar to that of No. 1 can be provided (not shown).

Under the preferred embodiment, as shown in FIG. 5, the tips 10A of the connecting bars 10 and 11 for the main reinforcing bars are
Stability is further enhanced by setting the dimension between 10B and the vertical connecting bar 20 so that the main bars 51 and 52 of the reinforcing bar cage 50 are sandwiched between them.

On the other hand, in the method for constructing the method frame of the present invention, as shown mainly in FIG. 12, the above-mentioned form is used and the rebar cage 50 is preliminarily loaded onto the slope and driven into the slope. Anchor 5
After the rebar cage 50 is assembled by fixing the rebar cage 50 to 5, 55 at a predetermined height position by welding or the like, the formwork is covered from above. At this time, the main reinforcing bar connecting bar 1
The hook-shaped tips 10A and 11A of 0 and 11 are attached to the rebar cage 5
The main bars 51 and 52 of 0 are locked from above. Then, the space between the perforated plates 1, 1 is filled with a hardening material M such as mortar or concrete.

As shown in FIG. 6, the vertical connecting bar 20
Extend upward and are not connected integrally with the spacing bar 30 by welding, for example, but simply by the connecting bar 1 for the main rebar.
Only 0 and 11 may be connected.

FIG. 7 and FIG. 8 show a comparative example in which the spacing holding muscle 30 is not provided. In this case, the perforated plate 1,
When 1 is installed on the slope, as shown by a broken line and an imaginary line in FIG. 8, a positional deviation occurs, and this often results in the gap between the perforated plates 1, 1 not being able to be accurately maintained.

However, when the space holding ribs 30 are provided so that the perforated plates 1, 1 are separated from each other to the maximum extent, the perforated plates 1, 1 are separated by the length of the designed space holding ribs 30. You can maintain the desired spacing.

As another example, as shown in FIG. 9, the space holding bar 30, the main reinforcing bar connecting bars 10 and 11 and the vertical connecting bar 2 are provided.
It is also possible to shift the position from 0. In this case, as is easily inferred from the figure, a pseudo quadrangle is formed between the space holding bar 30, the main reinforcing bar connecting bars 10 and 11 and the vertical connecting bar 20, and the perforated plate 1, Even if 1 is moved in the longitudinal direction, it is possible to form a mold that does not move.

On the other hand, in the example of FIG. 6, the main reinforcing bar connecting bar 1
Since the 0, 11 and the vertical connecting bar 20 are cut off from the distance maintaining bar 30, the main reinforcing bar connecting bars 10, 11 and the vertical connecting bar 20 are integrated and individually, respectively.
It is not stable because it rotates about the connecting end of the fulcrum.

Therefore, as shown in FIG. 10, the second vertical connecting bar 21 is provided with the space holding bar 30 and the connecting bars 10, 1 for the main rebar.
At least one (both in the illustrated example) of 1 can be integrated by welding or the like.

In addition, the vertical connecting bar 20 in the embodiment shown in FIGS. 2 to 5 has a function of integrating the main reinforcing bar connecting bars 10 and 11 and the spacing holding bar 30 with each other, and the main bars 51 and 52 are connected to the tip portion 10A. , 10B also has a function of locking in a state of being sandwiched.

Therefore, as shown in FIG. 11, the vertical connecting bar 2
2 has only the function of integrating the connecting bars 10 and 11 for the main reinforcing bars and the spacing holding bars 30 with each other, and instead, the locking bars 10B, which go downward in the middle of the connecting bars 10 and 11 for the main reinforcing bars,
11B may be integrated, and the main bars 51 and 52 may be sandwiched between the 11B and the tip parts 10A and 10B.

In the present invention, as the perforated plate 1, in addition to a metal mesh such as a crimp metal mesh or a welded metal mesh, a punching metal, an expanded metal, a perforated wood plate, a plastic plate or the like can be used.

Further, although it is desirable that the whole formwork is factory-manufactured, the perforated plates 1 and 1 are factory-manufactured in advance,
The necessary spacing retaining bar 30, the main reinforcing bar connecting bars 10 and 11 and the vertical connecting bar 20 can be assembled at the site of the slope.

[0048]

Industrial Applicability As described above, according to the present invention, while exhibiting the advantages of the reinforcing bar pre-assembly formwork effective from the viewpoint of improving workability, it exhibits more excellent stability with respect to the filler, Basically, it is possible to immediately shift to spraying or setting of the hardening material simply by installing the mold on the rebar cage. In this respect, workability is excellent, and positioning of the mold can be performed extremely accurately.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a conventional example (prior art example).

FIG. 2 is a perspective view of a mold.

FIG. 3 is a perspective view of a rebar cage.

FIG. 4 is a perspective view of an assembled state.

FIG. 5 is a cross-sectional view of an assembled state on the slope.

FIG. 6 is a cross-sectional view of another example of an assembled state on the slope.

FIG. 7 is a cross-sectional view of an assembled state on a slope of a comparative example.

FIG. 8 is a plan view thereof.

FIG. 9 is a plan view of another example of the present invention in an assembled state on a slope.

FIG. 10 is a plan view of another example of an assembled state on a slope.

FIG. 11 is a plan view of still another example of an assembled state on a slope.

FIG. 12 is a transverse cross-sectional view of a state frame construction state.

[Explanation of symbols]

1 ... Perforated plate 1, 10, 11 ... Connecting bar for main rebar, 10A,
11A ... Tip (part), 10B, 11B ... Locking muscle, 20,
22 ... Longitudinal connecting bar, 21 ... 2nd vertical connecting bar, 30 ... Interval holding bar, 50 ... Reinforcing bar cage, 51, 52, 53 ... Main bar, 54 ... Stirrup bar, 55 ... Anchor, M ... Hardening material.

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 23, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

However, this work is a new work after the installation of the formwork, resulting in an increase in work time. Moreover, if this work is omitted, when the mortar or concrete is sprayed or placed into the formwork and filled, the weight is added to the filling, and the result is that the lower part of the formwork expands to the hem. Become. With respect to such a problem, No. 7 of the publication
As shown in the figure, the lower part of the vertical stripe 102 and the perforated plate 1
It seems that it is effective to preliminarily connect 00 with an auxiliary muscle, but since the perforated plate 100 exhibits some flexibility, basically, the fulcrum that opposes the filler is: Only at the intersection of the horizontal stripes 101 and the vertical stripes 102, there is almost no effect of preventing the deformation of the mold by using the filling material.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

[0012]

With reference to the reference numerals of the drawings shown in FIG. 2 and subsequent figures, in the reinforcing bar front assembly formwork of the present invention which has solved the above-mentioned problems, the rebar cage 50 is first arranged at a predetermined position, and In the rebar tip assembly formwork in which the perforated plates 1 and 1 are installed on the left and right sides, at least two upper and lower stages of each perforated plate 1 and 1, connecting bars 10 and 11 for main rebar extending to the rebar cage 50. Are fixed to the corresponding perforated plates 1 and 1, and these connecting bars for main rebar 10,
11 are integrally connected by a vertical connecting bar 20, and above the rebar cage 50, a space holding bar 30 for connecting the left and right perforated plates 1 and 1 is provided.
Both ends of are connected to the perforated plates 1, 1 so as to be rotatable about a vertical axis, and the main reinforcing bar connecting bars 10 and 11 have hook-shaped tips 10A and 11A directed downward. 10A and 11A are the main bars 5 of the rebar cage 50.
1, 52 are configured to be locked from above, and a plurality of the main reinforcing bar connecting bars 10, 11, the vertical connecting bars 20, and the spacing holding bars 30 are arranged in the longitudinal direction. is there.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0030

[Correction method] Change

[Correction content]

The main reinforcing bar connecting bars 10 and 11 are integrally connected by a vertical connecting bar 20, for example, by welding. At a position corresponding to a position above the rebar cage 50, the space holding bar 3 that connects the left and right perforated plates 1, 1
0 is provided. In the same manner, in consideration of the transportability, also in the space holding muscle 30, as shown in the drawing, both end portions thereof are formed into loop hook shapes, and the corresponding perforated plate 1,
1 is rotatably connected and fixed to a vertical axis.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Sugiyama 4 2-35 Kudankita 4-chome, Chiyoda-ku, Tokyo Inside LITE Industry Co., Ltd. (72) Takeo Ohgo 4-chome 9-dan, Chiyoda-ku, Tokyo No. 35 in Light Industry Co., Ltd. (72) Inventor Masao Kinma 4-chome, Kudankita 4-chome, Chiyoda-ku, Tokyo No. 35 Inside Light Industry Co., Ltd. (72) Inoue Musashi 4 Kudan-kita, Chiyoda-ku, Tokyo 4 Chome 2-35 Light Industrial Co., Ltd. (72) Inventor Makihiro Kondo 4-chome Kitakita, Chiyoda-ku, Tokyo 4-chome 2-35 Lighthouse Co., Ltd. (72) Koichi Yokota Kudan-Kita, Chiyoda-ku, Tokyo 4th 2-35 Light Industrial Co., Ltd. (72) Inventor Kazuyuki Niwata 4-35, 9dan North, 9th Dan, Chiyoda-ku, Tokyo Light Industrial Co., Ltd. (72) Inventor Jun Nishimura Tokyo 4-2-35 Kudankita 4-chome, Chiyoda-ku, Lit Kogyo Co., Ltd. (72) Inventor Wataru Yokoyama 4-23-35 Kudankita 4-chome, Chiyoda-ku, Tokyo (72) Inventor Takuya Uemi 4-2-3, Kudankita 4-chome, Chiyoda-ku, Tokyo (72) Inventor, Tomoyuki Yamane 4--23-5 Kudankita, Chiyoda-ku, Tokyo (72) Inventor, Yoshinori Mizutani 2-10-12 Chikusa, Chikusa-ku, Nagoya Iseya Wire Mesh Industry Co., Ltd. Yoshinobu 2-10-12 Chikusa, Chikusa-ku, Nagoya Iseya Wire Mesh Industry Co., Ltd.

Claims (8)

[Claims] 1. A rebar tip assembly formwork in which a rebar cage is first placed at a predetermined position, and perforated plates are installed on the left and right sides of the rebar cage, and the rebar cage is extended to at least two levels above and below each perforated plate. The existing main reinforcing bar connecting bars are fixed to the corresponding perforated plates, and these main reinforcing bar connecting bars are integrally connected by the vertical connecting bars, and the above left and right perforated plates are connected above the reinforcing bar cage. A space-retaining bar to be provided is provided, and both ends of the space-retaining bar are rotatably connected to a perforated plate around a vertical axis, and the main reinforcing bar connecting bar has a hook shape in which a tip portion thereof is directed downward. None, these tip portions are configured to be locked to the main bars of the reinforcing bar cage from above, and the main reinforcing bar connecting bar, the vertical connecting bar and the spacing holding bar are arranged in plural in the longitudinal direction. Formwork for rebar tip assembly. 2. The main reinforcing bar connecting bar is fixed to a corresponding perforated plate by being rotatably connected about a vertical axis.
Form for rebar tip assembly described. 3. The formwork for the reinforcing bar tip assembly according to claim 1, wherein the longitudinal positions of the spacing retaining bars are different from the longitudinal positions of the main reinforcing bar connecting bar and the vertical connecting bar. 4. The main reinforcing bar connecting bar, the vertical connecting bar and the distance maintaining bar have substantially the same longitudinal position, and the vertical connecting bar extends upward and is integrally connected to the distance maintaining bar. The formwork for the reinforcing bar tip assembly according to claim 1. 5. The rebar fore-assembly formwork according to claim 1, wherein the main bar of the rebar cage is sandwiched between the tip of the main rebar connecting bar and the vertical connecting bar. 6. A vertical connecting bar is provided inside the tip of the connecting bar for the main reinforcing bar, and a second vertical connecting bar is provided on the perforated plate side of the vertical connecting bar, and the vertical connecting bar and the connecting bar for the main reinforcing bar are provided. The reinforcing bar according to claim 1, wherein a main bar of the reinforcing bar cage is sandwiched between the tip and the second vertical connecting bar integrally connects the spacing bar and one of the connecting bars for the main bar. Formwork for front assembly. 7. A structure in which a locking bar extending inward downward from the tip of the connecting bar for main reinforcing bar is integrated, and the main bar of the reinforcing bar cage is sandwiched between this locking bar and the tip of the connecting bar for main reinforcing bar. The formwork for rebar tip assembly according to claim 1. 8. A rebar cage is assembled in advance at a predetermined height position on a slope using the formwork according to any one of claims 1 to 5, and then the formwork is covered from above. A method for constructing a method frame, characterized in that the hook-shaped tip portion of the connecting bar for the main reinforcing bar is locked to the main bar of the reinforcing bar cage from above, and then the space between the perforated plates is filled with a hardening material.