JPH101942A - Device and method for arranging flexible reinforcing bar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device and method for continuously arranging a reinforcing bar, in a construction step of an underground continuous wall, in which a flexible reinforcing bar is used. SOLUTION: A reinforcing bar curing base 29 comprising a beam material is provided at the top end of a continuous wall construction groove and a reinforcing bar arranging device comprising a frame body 10, a reinforcing bar feed means, and a reinforcing bar guiding means is provided on the upper part of the groove. Reinforcing bars are delivered by the reinforcing bar feed means and after a required number of reinforcing bars are formed into a predetermined bundled state by means of the reinforcing bar guiding means, the bars are bundled together at a predetermined pitch to form main reinforcing bars S. And the bars S are pulled out to the base 29 and a lower frame F1 is inserted into the interior of the bars S so as to be suspended therein. Next, while a horizontal reinforcing bar panel Y is being attached to the bars S, the frame F1 is lowered to the groove and an intermediate frame and a top frame are attached at a predetermined interval. Top parts of the main reinforcing bars are fixed to the base 29 using a wedge member and the main bars S are cut off at a level above the fixed point. And concrete is placed up to the lower part of the base 29 to construct a continuous wall and then the base 29 is removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for building a reinforcing bar in a process of constructing a continuous underground wall, and more particularly to an apparatus suitable for building a reinforcing bar in a process of constructing a continuous underground wall having a limited head height. It relates to the method of building.

[0002]

2. Description of the Related Art Using a stable liquid such as bentonite, a wall-shaped groove is excavated underground while preventing collapse of an excavated wall surface.
The underground continuous wall method, in which the required reinforcing steel is built in the stable liquid after completion of excavation and the concrete is replaced with the stable liquid and cast into place to build a reinforced concrete wall underground, is a recent construction technology. As progress has been made, it is being heavily used.

[0003] The constructed underground continuous wall, which is a wall,
Because of its excellent water-blocking properties and high rigidity and strength, it has been used for temporary retaining materials and water-blocking walls, but recently it has been widely used as a structure for permanent structures such as underground structures and bridge foundations. ing. In the conventional method of reinforcing bars in the process of constructing such a continuous wall, a reinforcing bar cage manufactured in advance is suspended in a continuous wall groove sequentially and built while being joined.

[0004]

However, when the above-described conventional reinforced cage system is used for the construction of a continuous under-the-road wall constructed under a road having no head height, there are the following problems. . In the conventional reinforced cage system, a large head height is indispensable, and there is a case where the continuous wall method cannot be adopted because a necessary head is not secured in the continuous wall under the road. In the construction of continuous walls under roads where the head height is limited (rebar construction work), the number of reinforced squirrel cages inevitably increases, and the number of joints for reinforced squirrel cages increases, resulting in lower material and construction costs. In addition to increasing costs, it often caused a reduction in work efficiency and a failure in installation. In the conventional reinforced cage system, since a large head height is required for the construction work, the work floor is reduced accordingly, and the groundwater level needs to be greatly reduced. As a result, the surrounding environment was adversely affected by the drop in groundwater level. In the conventional reinforced cage system, a large space is required for the production and temporary placement of the reinforced cage, and it has often been difficult to secure a land in an urban area or the like.

As a method for solving the above-mentioned problems, a flexible reinforcing bar (a type of reinforcing bar having flexibility,
A method of constructing a continuous wall by using an extensible reinforcing bar) has been developed, but the method has the following problems. (A) When bundling flexible rebars and using them as main rebars, it is necessary to prepare flexible rebars which have been subjected to bundling processing to the required number in advance and set them in the erection apparatus. Therefore, a large amount of labor is required for the binding work, and a wide working space is indispensable as a processing place. (B) A frame for maintaining the width and pitch of the main bar is attached over the entire length of the continuous wall in the depth direction. Therefore, many materials are required, and the number of divided frames is increased. Therefore, much labor and cost are required for loading, mounting, joints, and the like. (C) In the horizontal reinforcing bars, hooks were attached to the upper ends of the reinforcing bars previously assembled on the front and back, and the reinforcing bars were hung on hardware previously mounted horizontally on the main bars in accordance with the construction of the main bars. When several to several tens of main bars are attached to the metal at the same length, much time is required for length adjustment. (D) Since the hardware was previously attached to the main reinforcement, the method of installation was limited, resulting in a reduction in work efficiency. (E) After the rebar construction is completed, fix the upper end of the rebar
It was received on a guide wall through a kansashi made of steel or the like on the upper part of the frame. Therefore, the frame must be installed over the entire length of the reinforcing bar, and the frame must be strong enough to withstand the weight of the reinforcing bar and the frame. Expenses were required, and workability during loading and installation was poor.

Accordingly, the present invention solves the above-mentioned problem of the conventional reinforced cage system, which is a conventional installation method.
The present invention has been developed with the object of providing a continuous building apparatus and a building method using flexible reinforcing bars that also solve the problems in the method of building the flexible reinforcing bars.

[0007]

In order to achieve the above-mentioned object, according to the present invention, a flexible-reinforcing-bar-building device is constructed as follows. First, a frame body was formed, and the frame body was provided with reinforcing bar supply means for receiving and sending a plurality of flexible reinforcing bars. Further, the frame body is provided with rebar guiding means for relaying the flexible rebar delivered by the rebar supplying means and guiding the required number of flexible rebars to a target erection position while setting up the required number of flexible rebars in a fixed binding shape. This constitutes a reinforcing-bar building device.

[0008] The rebar supply means is constituted by a drum provided with a drive means.

Further, the driving means is constituted by a motor mechanism.

[0010] The rebar guiding means is constituted by a guide roller mechanism.

Next, using the building device having the above-described configuration,
The flexible rebar was erected by the erection method consisting of the following steps. (1) A step of installing a reinforcing bar base made of a beam material at the upper end of the trench for building an underground continuous wall. (2) A step of installing the above-described building device above the underground continuous wall construction groove with the reinforcing bar curing base as a building target. (3) A step of sending flexible rebars from the rebar supply means, relaying the required number of flexible rebars through the rebar guide means to a certain binding state, and then binding them at a predetermined pitch to form a main reinforcement. (4) pulling out the main rebar to the rebar curing base,
A step of inserting a lower frame (which will be a bottom frame when the construction is completed) manufactured in advance into the inside of the main reinforcing bar, and suspending and attaching the lower frame. (5) A step of attaching the pre-assembled horizontal rebar panel to the main reinforcement while sequentially building the main reinforcement, and lowering the lower frame to the underground continuous wall construction groove by a predetermined depth (interval). (6) A step of inserting and attaching a previously manufactured intermediate frame (which will be an intermediate frame when building is completed) inside the main reinforcing bar on the reinforcing bar curing base. (7) A step of attaching the pre-assembled horizontal reinforcing bars to the main reinforcing bars while sequentially building the main reinforcing bars, and lowering the intermediate frame by a predetermined depth (interval) into the underground continuous wall construction groove. (8) A step of inserting and attaching a pre-manufactured upper frame (which will become an upper frame upon completion of installation) inside the main reinforcing bar on the reinforcing bar curing base. (9) A step of lowering the upper frame by a predetermined depth (interval) into the underground continuous wall construction groove while sequentially building the main reinforcing bars, and attaching a wedge member to a main reinforcing head on the reinforcing bar curing base. (10) A step of fixing the main muscle head to the rebar curing base using the wedge member, and cutting the main muscle at an upper portion of the fixing portion. (11) A step of casting concrete to a lower portion of the reinforcing bar base, constructing an underground continuous wall, and removing the reinforcing bar base.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention. FIG. 1 is a schematic configuration diagram showing a flexible rebar erection device according to the present invention, and FIG.
FIG. 3 is a front view showing an example of a flexible reinforcing-bar setting device according to the present invention, FIG. 3 is a plan view in FIG. 2, FIG. 4 is a structural explanatory view showing a guide roller mechanism as a reinforcing-bar guiding means, and FIG. FIG. 3B is a structural explanatory view from above, and FIG. First, referring to FIG. 1, a schematic configuration of a flexible reinforcing-bar setting device according to the present invention will be described. A frame body 10 is formed from a steel material such as an angle material, and a drum 11 having a driving means is provided on the frame body 10, and a required number of guide rollers 12 are provided on the continuous wall forming groove H. Was constructed. In this case, the drum plays a role of receiving and sending a plurality of flexible reinforcing bars, and the guide roller 12 relays the flexible reinforcing bars delivered from the drum, and forms a required number of flexible reinforcing bars in a fixed binding shape ( While in the binding state), it plays the role of guiding the groove to the continuous wall construction groove H which is the target construction position. A rail R is laid beforehand around the continuous wall construction groove H, and a wheel 13 is provided at the bottom of the flexible reinforcing bar mounting device so as to be movable. Reference numeral 29 indicates a reinforcing bar curing base made of a beam material.

Next, referring to FIGS. 2 and 3, the details of the flexible rebar construction device according to the present invention will be described. The drum 11 is rotatably driven via a roller chain 16 by a hydraulic motor 15 with a gear reducer, and takes up (receives) a main bar (flexible reinforcing bar) S.
And withdrawal (delivery). Also,
The guide rollers 14 and 12 relay the main rebar (flexible rebar) S drawn from the drum 11 and guide the main rebar S to the continuous wall construction groove H. In this case, the plurality of main rebars (flexible rebars) S pulled out from the drum 11 are passed through the guide rollers 14 and 12 through the number of main rebars (flexible rebars) S necessary for binding (three in this case). The other main reinforcing bars (flexible reinforcing bars) S also pass through the respective guide rollers 14 and 12. Since various rollers are disposed on the guide roller 12, the main reinforcement (flexible reinforcing bar) S is set in a fixed binding shape (bound state) while passing through the guide roller 12. After passing through the guide roller 12 in this way, it is bound at a predetermined pitch using an iron wire or a steel band or the like.
The guide roller 14 of this example is configured by arranging the same roller, and the main reinforcement (flexible reinforcement) S
Only relayed.

Next, a guide roller mechanism according to the present invention will be described with reference to FIG. As shown in FIGS. 1A and 1B, the guide roller 12 is provided between two roller mounting members P having a quarter-arc shape.
3, 24, 25, 26, 27, and 28 are sequentially arranged and incorporated. In the case of this example, three main rebars (flexible rebars) S are sent in parallel from the left side of the figure. Then, while passing through the rollers of the guide rollers 12, the guide rollers 12 are set up in a binding shape (bound state) as illustrated. That is, by arranging and combining the rollers whose shapes change sequentially, the arrangement state of the passing main rebar (flexible rebar) S is changed. In FIG. 7A, the upper roller 23 in FIG. 9B is omitted for easy understanding.

Next, a method of installing a flexible reinforcing bar using the above-described flexible reinforcing bar mounting apparatus X will be described step by step with reference to FIGS. (1) As shown in FIG. 5, around the groove H for continuous wall construction,
The rail R for moving the flexible rebar construction device X in advance
And a reinforcing bar base 29 made of a beam material is installed at the upper end of the continuous wall construction groove H. (2) Next, as shown in FIG.
9 is set as the installation target, and the flexible rebar construction device X is installed above the continuous wall construction groove H. (3) Next, as shown in FIG. 6, the main bars (flexible reinforcing bars) S are sent out from the drum 11, and the required number of main bars (flexible reinforcing bars) S are relayed through the guide rollers 12.
After setting up to a certain binding shape (binding condition),
Using an iron wire or a band made of steel, it is bound at a predetermined pitch. (4) Next, as shown in FIG. 7, the main rebar (flexible rebar) S is pulled out onto the rebar curing base 29,
The lower frame (which will be the bottom frame when the construction is completed) F1 manufactured in advance is replaced with the main reinforcing bar (flexible reinforcing bar).
Insert it inside S and hang it. (5) Next, as shown in FIG. 9, the main reinforcing bars (flexible reinforcing bars) S are sequentially built, and the horizontal reinforcing bars Y previously separately assembled on the front and back sides are combined with the main reinforcing bars (flexible reinforcing bars) S.
Then, the lower frame F1 is lowered into the continuous wall construction groove H by a predetermined depth. (6) Next, as shown in FIG. 11, an intermediate frame manufactured in advance inside the main reinforcing bar (flexible reinforcing bar) S on the reinforcing bar curing base 29 (becomes an intermediate portion frame when the installation is completed). Insert and attach F2. (7) Next, as in the case of the above (5) shown in FIG. 9, the horizontal reinforcing bars (flexible reinforcing bars) S are sequentially erected, and the horizontal reinforcing bars Y assembled separately in front and back are combined with the main reinforcing bars (flexible reinforcing bars). S, and the intermediate frame F2 is lowered into the continuous wall construction groove H by a predetermined depth. (8) Next, as shown in FIG. 12, an upper frame (which becomes an upper frame upon completion of installation) F3 which has been manufactured in advance inside the main reinforcing bar (flexible reinforcing bar) S on the reinforcing bar curing base 29. Insert and attach. (9) Next, as shown in FIG. 13, the main frames (flexible rebars) S are sequentially built while the upper frame F
3 is lowered into the continuous wall forming groove H by a predetermined depth, and a wedge member 38 is attached to the head of a main reinforcing bar (flexible reinforcing bar) S on the reinforcing bar curing base 29. (10) Next, as shown in FIG. 14, the head of the main bar (flexible reinforcing bar) S is fixed to the reinforcing bar curing base 29 by the wedge member 38, and the upper main bar (flexible reinforcing bar) S is cut off. FIG. 16 is a diagram showing the completion of the installation using the flexible reinforcing bars. (11) Finally, concrete is poured to the lower part of the reinforcing bar curing base 29 to form a continuous wall, and then the reinforcing bar curing base 29 is removed.

Next, the aforementioned main reinforcing bar (flexible reinforcing bar)
The method of attaching S to the lower frame F1, the intermediate frame F2, and the upper frame F3 will be described with reference to FIG. Each of the above-described frames is, as shown in FIGS.
In order to maintain the pitch, interval, and the like of the main reinforcing bars (flexible reinforcing bars) S built in the continuous-wall building grooves H, steel angles and the like are formed in a box shape to form a frame F (for mounting). is there. A predetermined number of bolts 33 are attached to this frame (for building) F at predetermined positions in advance. When the frame (for building) F and the main reinforcement (flexible rebar) S are attached, the bolts 33 and 33 are used. This is performed by inserting a main reinforcing bar (flexible reinforcing bar) S therebetween, holding the main reinforcing bar S with the mounting plate 32, and fixing with the nut 34.

Next, a method of mounting the horizontal reinforcing panel Y in the above-described mounting method will be described with reference to FIG. <How to attach the horizontal reinforcing panel in the above procedures (5) and (7) will be described. >
FIG. 10A shows the appearance of the horizontal reinforcing bar panel Y. As shown in the figure, a grid-like panel was constituted by the assembled reinforcing bars 35 and the horizontal reinforcing bars 36. (B), (C), (D)
Indicates a mounting state of the horizontal reinforcing bar panel Y, and the main reinforcing bar (flexible reinforcing bar) S is attached to the Ω-shaped mounting bracket 37 as shown in FIG.

Next, the attachment of the reinforcing bar curing base 29 and the wedge member 38 in the above-mentioned procedures (9) and (10) will be described with reference to FIGS. FIG. 5 or FIG.
As shown in (A), a fixing portion 31 of the wedge member 38 is provided at a predetermined position of the reinforcing bar curing base 29 in advance. A wedge member 38 having a slit inserted through a main reinforcing bar (flexible reinforcing bar) S shown in FIG. 15B is inserted into the fixing portion 31 and fixed. After the fixing, the main bar (flexible reinforcing bar) S at the upper portion of the wedge member 38 is cut.

[0019]

Since the present invention is configured as described above, it has the following effects. (1) According to the present invention, construction of a continuous wall can be performed even at a low head. In addition, the amount of excavated soil for securing a work space is reduced, and the economy is improved. (2) According to the present invention, it is possible to continuously build a reinforcing bar without a joint, thereby greatly improving the economic efficiency and shortening the process by increasing the efficiency of the reinforcing bar building. In addition, since there is no joint in the main reinforcement, the joint does not become a weak point in the event of an earthquake or the like, and a structurally stable and highly reliable continuous wall can be constructed. (3) In the present invention, since the head height required for the work is small, the work floor is correspondingly high, and the decrease in the groundwater level is small. Therefore, the impact on the surrounding environment due to the decrease in the groundwater level is reduced. (4) According to the present invention, since the production of the flexible rebar is performed in the factory, the production site of the rebar cage is not required on the site. In addition, the temporary storage area may have a small area. Therefore, the construction range of the continuous wall under the road in the urban area where it is difficult to secure the land is widened. (5) According to the present invention, a bundling operation according to the required number of flexible rebars, which was impossible with the conventional rebar-building apparatus, can be mechanically performed. For this reason, labor saving and cost reduction have become possible, and a large work space for previously performing the binding work has become unnecessary. (6) In the conventional installation of a flexible reinforcing bar, a frame for maintaining the width and pitch of the main reinforcing bar is continuously attached. According to the present invention, the frame function can be exhibited only by intermittently attaching the frame. became. Therefore, it is possible to reduce the cost of materials such as production, delivery, installation, joints, and labor. (7) In the installation of the conventional flexible reinforcing bar, it is necessary to attach a hardware for suspending the pre-assembled reinforcing bar to the main reinforcing bar in advance. However, according to the present invention, it is possible to attach a lightweight horizontal reinforcing bar panel assembled separately in front and back with simple fixing fittings according to the installation of the reinforcing bar, and it is not necessary to attach the hardware to the main reinforcing bar in advance, and the hardware is used. It does not become a hindrance when building rebar. Accordingly, the workability of installing the reinforcing bars and attaching the horizontal reinforcing bars is improved, and the cost can be reduced. (8) In the construction of a conventional flexible reinforcing bar, a reinforcing bar was received by a guide wall through a kansashi on a frame. Therefore, a strong frame was required over the entire length of the continuous wall in the depth direction. However, in the present invention, since the top end of the main bar is fixed to the curing base by using the wedge member, a rigid and continuous frame as in the related art is unnecessary, and intermittent in order to maintain the width and pitch of the main bar. All that is required is to attach the frame to the camera. Accordingly, material costs and labor costs are reduced, and work efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a flexible reinforcing bar installation device according to the present invention.

FIG. 2 is a front view showing an example of a flexible reinforcing-bar setting device according to the present invention.

FIG. 3 is a plan view of FIG.

FIG. 4 is a structural explanatory view showing a guide roller mechanism as a reinforcing bar guiding means, (A) is a structural explanatory view from above,
(B) is a structural explanatory view from the side.

FIG. 5 is an explanatory diagram showing a situation in which a reinforcing bar curing base is installed at the upper end of the continuous wall construction groove.

FIG. 6 is an explanatory view showing a situation in which a main bar is sent out from a drum, and a guide roller is relayed to tie.

FIG. 7 is an explanatory view showing a situation in which a lower frame manufactured in advance is suspended from a main bar and attached.

FIGS. 8A and 8B are explanatory diagrams showing a method of attaching the main reinforcement to the frame, wherein FIG. 8A shows an attachment state, and FIG. 8B shows details of an attachment portion.

FIG. 9 is an explanatory view showing a situation in which main reinforcements are sequentially built, a pre-assembled horizontal reinforcing bar is attached to the main reinforcements, and a lower frame is lowered into a continuous wall construction groove.

FIGS. 10A and 10B are explanatory diagrams showing a method of mounting a horizontal reinforcing bar panel in a mounting method according to the present invention, wherein FIG. 10A shows an appearance of the horizontal reinforcing bar panel, FIG. (C) and (D) show mounting brackets for the horizontal reinforcing panel.

FIG. 11 is an explanatory diagram showing a situation in which an intermediate frame manufactured in advance is attached to a main bar.

FIG. 12 is an explanatory view showing a situation in which an upper frame manufactured in advance is attached to a main bar.

FIG. 13 is an explanatory diagram showing a situation in which main bars are sequentially built, the upper frame is lowered into the continuous wall forming groove, and a wedge member is attached to the main bar head.

FIG. 14 is an explanatory view showing a state where the main muscle head is fixed to the reinforcing bar curing base with a wedge member and the upper main muscle is cut off.

FIGS. 15A and 15B are explanatory diagrams showing how the reinforcing bar curing base and the wedge member are attached to each other. FIG.

FIG. 16 is a view showing the completion of the installation by the flexible reinforcing bar of the present invention.

[Explanation of symbols]

 10 Frame body 11 Drum 12 Guide rollers 13 Wheels 14 Guide rollers 15 Hydraulic motor 16 Roller chain 17 ··· Electromagnetic valve storage box 18 ··· Swivel 19 ··· Slip ring 20 ··· Brake cylinder 21 ··· Gearing 22 ··· Pin (shaft) 23 ··· Roller 24 ··· Roller 25 Roller 26 Roller 27 Roller 29 Roller curing base 30 Scaffolding board 31 Fixed part 32・ ・ ・ ・ Mounting plate 33 ・ ・ ・ ・ ・ ・ Bolts 34 ・ ・ ・ ・ ・ ・ Nuts 35 ・ ・ ・ ・ Assembly reinforcing bars 36 ・ ・ ・ ・ Horizontal reinforcing bars 37 ・ ・ ・ ・ ・ ・ Mounting brackets 38 ・ ・ ・ ・ ・ ・ Wedge members F ・ ・ ・・ Frame (for building) DESCRIPTION OF SYMBOLS 1 ... Lower frame F2 ... Intermediate frame F3 ... Upper frame H ... Groove for continuous wall construction P ... Roller mounting member R ... Rail S ... Main reinforcement (flexible Reinforcing bar) Y ... Horizontal reinforcing bar panel W ... Reinforcing cage

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masao Arai 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Inventor Motomo Ariyama 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo No. 1 Taisei Construction Co., Ltd. (72) Inventor Yuko Kida 1-25-1, Nishi Shinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Akira Nishimura 1-6-17, Meguro, Meguro-ku, Tokyo Shares Company Toneuchi (72) Inventor Susumu Tokunaga 1-6-17 Meguro, Meguro-ku, Tokyo Stock Company Tonenai (72) Inventor Nobuyuki Urakawa 1-14-5 Ginza, Chuo-ku, Tokyo Seiwaki Co., Ltd. In company

Claims (5)

[Claims] 1. A frame body, a reinforcing bar supply means provided on the frame body for receiving and sending a plurality of flexible reinforcing bars, and a flexible reinforcing bar provided on the frame body and sent by the reinforcing bar supplying means. And a reinforcing bar guiding means for guiding a required number of flexible reinforcing bars to a target mounting position while setting up the required number of flexible reinforcing bars in a fixed binding shape. 2. The flexible reinforcing bar setting device according to claim 1, wherein said reinforcing bar supplying means comprises a drum provided with a driving means. 3. The apparatus according to claim 2, wherein said driving means comprises a motor mechanism. 4. The flexible reinforcing bar setting device according to claim 1, wherein said reinforcing bar guiding means comprises a guide roller mechanism. 5. A method for installing a flexible reinforcing bar, comprising the following first to eleventh steps. (1) First step of installing a flexible reinforcing bar base made of a beam material at the upper end of the underground continuous wall construction groove. (2) The flexible reinforcing bar curing base is set above the groove for constructing an underground continuous wall, with the target of building being the building target.
A second step of installing the flexible rebar building device according to any one of (4) to (4). (3) A third step in which the flexible rebar is sent out by the rebar supply means, the required number of flexible rebars are set up in a fixed binding shape by relaying the rebar guiding means, and then bound at a predetermined pitch to become a main rebar. . (4) A fourth step of pulling out the main reinforcing bar onto the flexible reinforcing bar curing base, inserting a pre-manufactured frame serving as a bottom frame inside the main reinforcing bar when the reinforcing bars are completely installed, and suspending and attaching the frame. (5) A fifth step of attaching the pre-assembled horizontal reinforcing panels to the main reinforcement while sequentially building the main reinforcement, and lowering the frame in the fourth step by a predetermined depth (interval) into the underground continuous wall construction groove. (6) A sixth step of inserting and attaching a pre-manufactured frame serving as an intermediate frame when the rebar is completely installed, inside the main rebar on the flexible rebar curing base. (7) A seventh step of attaching the pre-assembled horizontal reinforcing bars to the main reinforcement while sequentially building the main reinforcement, and lowering the frame in the sixth step to the underground continuous wall construction groove by a predetermined depth (interval). (8) An eighth step of inserting and attaching a pre-manufactured frame serving as an upper frame when the rebar is completely installed, inside the main rebar on the flexible rebar curing base. (9) While sequentially building the main reinforcing bars, the frame in the eighth step is lowered by a predetermined depth (interval) into the underground continuous wall construction groove, and a wedge member is attached to the main reinforcing head on the flexible reinforcing bar curing base. A ninth step of attaching (10) A tenth step of fixing the main muscle head to the flexible reinforcing bar curing base using the wedge member, and cutting the main muscle at an upper portion of the fixing portion. (11) An eleventh step in which concrete is poured into the lower part of the flexible reinforcing bar curing base, an underground continuous wall is constructed, and then the flexible reinforcing bar curing base is removed.