KR100935317B1 - Assembly retaining wall system with ground reinforcement and its construction method - Google Patents

Abstract

PURPOSE: A prefabricated retaining wall structure in which reinforcement materials are inserted, and a construction method thereof are provided to install and disassemble panels and blocks freely. CONSTITUTION: A prefabricated retaining wall structure in which reinforcement materials are inserted comprises multiple front panels(100), multiple fill packs(200), multiple connection blocks(300), multiple connection plates(400), bolts(500), nuts(600), and multiple ground reinforcement materials. The front panels are piled up each other. The fill packs installed on the rear surface of the front panels are filled with filler through a grout injection port. The connection blocks connect the piled front panels integrally. The connection plates are installed on the rear surface of the connection blocks. The bolts and nuts are fastened through connection holes of the connection blocks and through holes of the connection plates. One end of the ground reinforcement materials are settled on the cut slope, and the other end are fixed on the front surface of the front panels.

Description

Assembly Retaining Wall System with Ground Reinforcement and Its Construction Method

The present invention relates to a prefabricated retaining wall structure in which a reinforcement is inserted for reinforcement of a cut slope and a reinforcement is inserted into a prefabricated retaining wall structure in which a panel and a block are freely installed and dismantled, and have excellent aesthetics and are structurally stable. .

In general, as a way to protect the inclined surface cut off during construction, and not to damage the aesthetics, the concrete laying works after installing the stone retaining wall structure, formwork and reinforcing bar in which natural stone is laminated to a predetermined height on the front of the slope Reinforced concrete retaining wall formed was mainly used.

However, the conventional masonry retaining wall structure is difficult to transport and construct due to the load of natural stone itself, and also difficult to be processed into a desired shape due to the material properties, and the height that can be constructed due to the limitation of the construction method of stacking the natural stone of an independent structure. Due to the constraints of and slope, additional environmental damage was inevitable to mine natural stone materials.

In addition, the conventional reinforced concrete retaining wall structure is necessary to additionally inclined inclinedly to secure a space for constructing the retaining wall at the construction site and to maintain stability during construction. And a lot of manpower required to cure concrete and the construction period is long, there is a problem that the relative economic deterioration.

In order to solve the above-mentioned conventional problems, many prefabricated retaining wall structures utilizing blocks or panels have been developed and used in recent years.

However, when the prefabricated retaining wall structure is compacted by filling the interspace with soil to install a flat panel on a curved excavation slope, the deformation of the panel occurs due to the compressive settlement of the filled soil. It causes relaxation or deformation and thus impairs the overall stability of the digging slope. In addition, when the concrete is filled in the space between the panel and the excavation surface, there is a problem in that the cost and construction time increases as an excessive amount of material is required.

In addition, the construction method of the prior art is possible to build a laminated construction method or a step-like construction that is built up from the excavation surface after the inclined excavation of a predetermined depth, but the earth and sand filled between the panel and the excavation surface if the secured or inclined excavation is inevitable Due to the properties of concrete, such as vertical excavation is impossible, there is a problem that the construction method is limited.

The present invention is proposed to solve the conventional problems as described above.

The purpose of the present invention is to provide a prefabricated retaining wall structure in which a reinforcement material is installed to reinforce the inclined incline, and a panel and block are prefabricated retaining wall structure in which a reinforcement material is freely installed and dismantled with excellent aesthetics and structurally stable. have.

In order to solve the above technical problem, the present invention is a prefabricated retaining wall structure is inserted reinforcement,

A rectangular plate having a predetermined thickness as a whole is formed, the ground reinforcement panel fixing through-hole 110 is formed in the front of the inclined inclined surface and penetrated from the center to the rear of the front, connected to four corners Block coupling portion 120 is formed, a plurality of front panel 100 stacked in contact with each other up, down, left and right sides; In the form of a tube as a whole, it is installed on the back of the front panel 100, the ground reinforcing material filling pack through-hole 210 and the grout inlet 220 is formed in the center and top, respectively, the grout inlet 220 Filled through the plurality of filling packs 200; It is fastened to the upper surface of the neighboring connection block coupling portion 120, the plurality of front panels 100 stacked in contact with each other, the upper, lower, left and right sides are integrally connected, perforated through the tube from the front to the rear in the center A plurality of connection blocks 300 on which connection holes 310 are formed; A plurality of connection plates 400 installed in the rear of the connection block 300 in the form of a perforated plate as a whole; A plurality of bolts 500 and nuts 600 fastened through the connection hole 310 of the connection block 300 and a hole drilled in the center of the connection plate 400; And a plurality of ground stiffeners (1) having one end fixed to the inclined inclined surface and the other end passing through the ground reinforcement material filling pack through hole 210 and the ground reinforcement panel fixing through hole 110 and fixed to the front surface of the front panel. It provides a prefabricated retaining wall structure and a construction method of the reinforcement is inserted, characterized in that consisting of.

In addition, the filling pack 200 is further formed integrally with a gasket coupling portion 230 in which a plurality of screw holes are drilled around the filling pack 200 with a predetermined width, and a plurality of screw holes are formed. A plurality of perforated gaskets 250; And a plurality of filling pack fixing screws 260 that pass through the screw holes of the gasket 250 and the screw holes of the gasket coupling portion 230 and are fastened to the rear surface of the front panel 100. It provides a prefabricated retaining wall structure and a construction method thereof is inserted into a reinforcing material.

According to the present invention, the following effects can be expected.

First, since the assembly is installed in the field with a pre-fabricated member in the factory, it provides a prefabricated retaining wall structure and a construction method is inserted into the reinforcement material to reduce the air and increase the process density.

Secondly, since the assembly is installed in the field with a pre-fabricated member in the factory, it provides a prefabricated retaining wall structure and a construction method is inserted into the reinforcement that can ensure a certain quality irrespective of the skill of the skilled worker.

Third, all installed members are organically bound to each other, thereby providing a prefabricated retaining wall structure in which a reinforcement material having excellent durability is inserted without deformation or separation of the members and a construction method thereof.

Fourth, it provides a prefabricated retaining wall structure and a construction method is inserted into the reinforcement to reduce the amount of soil excavated for the construction of the slope before the retaining wall installation, significantly reducing the amount of concrete filled between the back surface and the slope of the installed retaining wall.

Fifth, excavation from the upper part to the lower part, and construction of the retaining wall in sequence at the same time, and the filling pack is applied to the back panel of the front panel to stabilize the inclined surface immediately after the excavation, so the risk of inclined surface collapse is small and safe. Provided is a method of constructing a prefabricated retaining wall structure in which a reinforcement is inserted.

Sixth, pressure filling is possible in the filling pack located in the space between the front panel connected to the ground reinforcement and the excavated slope, so that the front panel and the ground are in close contact, and the tensile force by the ground reinforcement is distributed evenly over the sloped surface excavated through the panel. Provided is a method of constructing a prefabricated retaining wall structure in which a reinforcement material having increased ground stability is inserted.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

1a to d is a front view, a back view, a cross-sectional view and a perspective view of a front panel 100 of a prefabricated retaining wall structure in which the reinforcement of the present invention is inserted in turn, and FIG. 2 is a packing pack of a prefabricated retaining wall structure in which the reinforcement of the present invention is inserted. An exploded perspective view of the 200 and the gasket 250.

Figure 3a is a front view of the connection block 300 of the prefabricated retaining wall structure is inserted the reinforcement of the present invention, Figure 3b is a front panel 100, the connection block 300 and the connection of the prefabricated retaining wall structure is inserted. 3C is an exploded perspective view of the connection block 300 and the connection plate 400 of the prefabricated retaining wall structure in which the reinforcing material of the present invention is inserted.

4 is an exploded perspective view of a prefabricated retaining wall structure in which the reinforcing material of the present invention is inserted, and FIG. 5 is a front view and a cross-sectional view of the prefabricated retaining wall structure in which the reinforcing material of the present invention is inserted.

The prefabricated retaining wall structure in which the reinforcing material is inserted is a prefabricated retaining wall structure in which the reinforcing material is inserted,

A rectangular plate having a predetermined thickness as a whole is formed, the ground reinforcement panel fixing through-hole 110 is formed in the front of the inclined inclined surface and penetrated from the center to the rear of the front, connected to four corners Block coupling portion 120 is formed, a plurality of front panel 100 stacked in contact with each other up, down, left and right sides; As a form of a tube (tube) as a whole, it is installed on the rear of the front panel 100, and the ground reinforcing material filling pack through-hole 210 and the grout inlet 220 is formed in the center and top, respectively, the grout inlet ( A plurality of filling packs 200 filled with fillers through 220; It is fastened to the upper surface of the neighboring connection block coupling portion 120, the plurality of front panel 100 is stacked integrally connected to each other in contact with the upper, lower, left and right sides, integrally, through the center from the front to the back through the perforation A plurality of connection blocks 300 on which connection holes 310 are formed; A plurality of connection plates 400 installed in the rear of the connection block 300 in the form of a perforated plate as a whole; A plurality of bolts 500 and nuts 600 fastened through the connection hole 310 of the connection block 300 and a hole drilled in the center of the connection plate 400; And a plurality of ground stiffeners (1) having one end fixed to the inclined inclined surface and the other end passing through the ground reinforcement material filling pack through hole 210 and the ground reinforcement panel fixing through hole 110 and fixed to the front surface of the front panel. It is characterized by consisting of.

The front panel 100 will typically use a PC block or the like, but can also use a material such as synthetic resin having durability enough to withstand the tensile force of the ground reinforcement (1) and earth pressure on the inclined surface after construction. The perforated ground reinforcement panel fixing through-hole 110 may be preferably perforated to be inclined from the center of the front of the front panel 100 to the rear in consideration of the inclination surface installation angle of the ground reinforcement (1) to be described later.

The filling pack 200 is mainly used as a sack having a durable enough not to break out after the filling material such as mortar (mortar) grouted through the grout injection hole 220, the construction is maintained elsewhere Other conventional materials are also available.

The connection block 300 is coupled to the connection block coupling portion 120 of the plurality of front panels 100 stacked together with a connection plate 400 with a bolt 500 and a nut 600 to be stacked. It serves to bind the plurality of front panels 100 integrally.

In addition, the filling pack 200, the gasket coupling portion 230 is formed integrally with a plurality of screw holes perforated in a predetermined width around the filling pack 200, a plurality of screw holes perforated In combination with a plurality of gaskets 250 may be fixed to the rear of the front panel 100. In this case, a plurality of filling pack fixing screws 260 fastened to the rear surface of the front panel 100 by penetrating the screw hole of the gasket 250 and the screw hole of the gasket coupling portion 230 will be mainly used. Conventional bonding means such as clips or adhesives can be used.

The ground reinforcement (1) may be a conventional means such as a soil nailing anchor (soil nailing anchor), earth anchor (rock anchor), rock bolt (rock bolt), but using a strip bar, etc. Can be. When the strip bar or the like is used, the present invention will form a reinforcing soil retaining wall as a whole.

6 is a cross-sectional view showing a first embodiment of a method for constructing a prefabricated retaining wall structure into which a reinforcing member of the present invention is inserted.

The first embodiment of the construction method of the prefabricated retaining wall structure is inserted reinforcement of the present invention in the construction method of the prefabricated retaining wall structure is inserted reinforcement,

(a) an excavation step of arranging the ground where the retaining wall is to be installed and excavating at a predetermined slope according to the ground state to form an inclined surface to the bottom; (b) reinforcing step of reinforcing the inclined surface by fixing the ground reinforcement (1) from the first end to the top end of the lower portion at regular intervals on the inclined surface; (c) a foundation concrete block construction step of forming a foundation concrete 700 by placing reinforcing steel in the lower portion of the inclined surface and placing concrete; (d) The combination of the front panel 100 and the filling pack 200 of claim 1 or 2 in a horizontal line so that the lower end of the ground reinforcing material (1) of the first stage installed at the bottom of the inclined surface penetrates horizontally Mounting, the connection block 300 and the connecting plate 400 of the connection block coupling portion 120 of the plurality of front panel 100 placed horizontally in contact with each other and the left and right sides of the bolt 500 and the nut 600 Assembling the first stage panel assembly step; (e) a first stage filling step of injecting a filler into the installed filling pack 200; (f) a first stage ground reinforcing material tensioning step of tensioning a lower end of the ground reinforcing material 1 of the first stage; And, (g) a repeating construction step of sequentially repeating the steps of (d) to (f) from the second stage to the top stage.

The excavation step is excavated from the top to the bottom in the composition of the inclined surface, it is not necessarily constructed and separated from the reinforcement step, but may be reinforced using the ground reinforcement (1) immediately after the excavation of one stage to prevent the collapse of the inclined surface. . The slope of the inclined surface during the excavation will be a typical slope that does not occur collapse of the inclined surface using the ground reinforcement (1).

Ground reinforcement (1) used in the reinforcing step will be mainly used a conventional earth anchor (earth anchor) for the reinforcement of the inclined surface, as described above, soil nailing anchor (soil nailing anchor), rock bolt (rock bolt) ), Strip bars and the like can also be used.

The foundation concrete block construction step is a process for constructing the foundation concrete 700 for supporting the entire retaining wall after the reinforcement step to perform the reinforcement reinforcement in the same manner as used in the prefabricated retaining wall structure is inserted into a conventional reinforcement, concrete After pouring, it goes through a curing step.

The first end panel assembly step is a step of mounting and fixing the combination of the front panel 100 and the filling pack 200 and the connecting block 300 horizontally to the first end of the inclined surface.

The first stage filling step is a process for filling the space between the rear surface and the inclined surface of the front panel 100 is installed to ensure the overall structural integrity as a retaining wall, through the grout inlet 220 to the filling pack 200 Fillers, such as mortar or soil cement, are grouted with no pressure or hydraulic pressure. In this case, the grouting filler is not leaked into the gap of the retaining wall, so that the amount of use is significantly reduced than when the filling pack 200 is not present, and the grouted filling pack 200 and the front panel 100 are integrally bound.

The first ground reinforcing material tensioning step is made at a point in which the curing of the filler proceeds to some extent after the first stage filling step, and protrudes through the ground reinforcement panel fixing through hole 110 of the installed front panel 100. The lower end portion of the ground reinforcement material 1 is fixed to the front panel 100 by pulling with a predetermined tensile force. In this case, as the fixing means, a fixing means such as a conventional earth anchor using a pressure plate or the like can be used.

Thereafter, by repeating the construction of the steps (d) to (f) from the second end to the top end, the prefabricated retaining wall structure into which the reinforcing material of the present invention is inserted is completed.

7 is a cross-sectional view showing a second embodiment of the method of constructing a prefabricated retaining wall structure in which a reinforcing member of the present invention is inserted.

The second embodiment of the construction method of the prefabricated retaining wall structure is inserted reinforcement of the present invention in the construction method of the prefabricated retaining wall structure is inserted reinforcement,

(a) a first end excavation step of arranging the ground where the retaining wall is to be installed and excavating only the first end with a predetermined slope according to the ground state to form a first end slope; (b) a first end reinforcing step of reinforcing the inclined surface by fixing the ground reinforcement material 1 at left and right intervals on the first end slope surface; (c) Mounting the combination of the front panel 100 and the filling pack 200 of claim 1 or 2 horizontally so that the lower end of the ground reinforcing material (1) installed on the first end slope in a horizontal line, each other By connecting the connection block 300 and the connection plate 400 to the connection block coupling portion 120 of the plurality of front panels 100 placed horizontally in contact with the left and right surfaces by bolts 500 and nuts 600. Installing the first stage panel assembly step; (d) a first stage filling step of injecting a filling material into the installed filling pack 200; (e) a first stage ground reinforcing material tensioning step of tensioning a lower end of the ground reinforcing material 1 of the first stage; (f) an iterative construction step of sequentially repeating the steps of (a) to (e) from the second stage to the lowest stage; And, (g) reinforcing the reinforcing bar in the lower portion of the lower end of the inclined surface, the concrete concrete construction step of forming the foundation concrete 700 by pouring concrete; characterized in that the configuration.

In the first step excavation step, in the composition of the inclined surface, only one step is excavated from top to bottom and is not necessarily constructed separately from the reinforcement step, but is reinforced by using the ground reinforcement material 1 immediately after excavation of one step to prevent the collapse of the inclined surface. Can be carried out. The slope of the inclined surface during the excavation will be a typical slope that does not occur collapse of the inclined surface using the ground reinforcement (1).

Ground reinforcement (1) used in the first step of reinforcing step will be mainly used a conventional earth anchor (earth anchor) for the reinforcement of the inclined surface, as described above, soil nailing anchor (soil nailing anchor), rock bolt (rock bolt), strip bar (strip bar) and the like can also be used.

The first end panel assembly step is a step of mounting and fixing the combination of the front panel 100 and the filling pack 200 and the connection block 300 horizontally to the first end of the inclined surface.

The first stage filling step is a process for filling the space between the rear surface and the inclined surface of the front panel 100 is installed to ensure the overall structural integrity as a retaining wall, through the grout inlet 220 to the filling pack 200 Fillers, such as mortar or soil cement, are grouted with no pressure or hydraulic pressure. In this case, the grouting filler is not leaked into the gap of the retaining wall, so that the amount of use is significantly reduced than when the filling pack 200 is not present, and the grouted filling pack 200 and the front panel 100 are integrally bound.

The first ground reinforcing material tensioning step is made at a point in which the curing of the filler is progressed to some extent after the first stage filling step, and protrudes through the ground reinforcing panel fixing through hole 110 of the installed front panel 100. The lower end of the ground reinforcing material (1) is pulled by a predetermined tensile force and fixed to the front panel (100). At this time, a conventional earth anchor fixing means using a shiatsu plate or the like can be used as the fixing means.

Thereafter, the above steps (a) to (e) are repeatedly constructed from the second stage to the lowest stage.

The basic concrete block construction step is the same as that used in a prefabricated retaining wall structure in which a conventional reinforcement is inserted in a process of constructing a foundation concrete 700 supporting the entire retaining wall after the reinforcement step.

As a result, each step of the second embodiment of the construction method of the prefabricated retaining wall structure in which the reinforcement of the present invention is inserted is almost similar to the construction method of each step of the first embodiment. However, the first embodiment is a method of constructing the retaining wall as a whole from the bottom up, the second embodiment is a difference in that the method of constructing the retaining wall from the top to the bottom as a whole.

The second embodiment is a new construction method that is completely different from the conventional construction method, and excavation from the top to the bottom to sequentially construct the retaining wall at the same time as the excavation of one stage, and immediately after excavation by applying a filling pack to the back of the front panel The excavated slope can be stabilized, so that the retaining wall can be safely constructed with less risk of slope collapse.

Although the present invention has been described in connection with the preferred embodiment as mentioned above, various modifications and variations are possible within the scope without departing from the spirit of the present invention, it can be used in various fields.

Therefore, the claims of the present invention include modifications and variations that fall within the true scope of the invention.

Figure 1a is a front view of the front panel 100 of the prefabricated retaining wall structure is inserted the reinforcement of the present invention.

1B is a rear view of the front panel 100 of the prefabricated retaining wall structure in which the reinforcement material of the present invention is inserted.

1C is a cross-sectional view of the front panel 100 of the prefabricated retaining wall structure in which the reinforcing material of the present invention is inserted.

Figure 1d is a perspective view of the front panel 100 of the prefabricated retaining wall structure is inserted reinforcement of the present invention.

2 is an exploded perspective view of the packing pack 200 and the gasket 250 of the prefabricated retaining wall structure into which the reinforcing material of the present invention is inserted.

Figure 3a is a front view of the connection block 300 of the prefabricated retaining wall structure is inserted reinforcement of the present invention.

Figure 3b is a cross-sectional view showing a coupling state of the front panel 100, the connection block 300 and the connection plate 400 of the prefabricated retaining wall structure inserted into the reinforcement of the present invention.

Figure 3c is an exploded perspective view of the connection block 300 and the connection plate 400 of the prefabricated retaining wall structure inserted into the reinforcement of the present invention.

4 is an exploded perspective view of a prefabricated retaining wall structure in which a reinforcement of the present invention is inserted.

5 is a front view and a cross-sectional view of the prefabricated retaining wall structure in which the reinforcement of the present invention is inserted.

6 is a cross-sectional view showing a first embodiment of a method for constructing a prefabricated retaining wall structure into which a reinforcing member of the present invention is inserted.

7 is a cross-sectional view showing a second embodiment of the method of constructing a prefabricated retaining wall structure in which a reinforcing member of the present invention is inserted.

<Explanation of symbols for the main parts of the drawings>

1: Ground Reinforcement

100: front panel 110: ground reinforcement panel fixing through hole

120: connecting block coupling portion

200: Filling pack 210: Ground reinforcing material filling pack through hole

220: grout inlet 230: gasket coupling portion

250: Gasket 260: Filling pack fixing screw

300: connection block 310: connection hole

400: connecting plate

500: bolts

600: nut

700: foundation concrete

Claims (4)

In prefabricated retaining wall structure with reinforcement inserted, A rectangular plate having a predetermined thickness as a whole is formed, the ground reinforcement panel fixing through-hole 110 is formed in the front of the inclined inclined surface and penetrated from the center to the rear of the front, connected to four corners Block coupling portion 120 is formed, a plurality of front panel 100 stacked in contact with each other up, down, left and right sides; In the form of a tube as a whole, it is installed on the back of the front panel 100, the ground reinforcing material filling pack through-hole 210 and the grout inlet 220 is formed in the center and top, respectively, the grout inlet 220 Filled through the plurality of filling packs 200; It is fastened to the upper surface of the neighboring connection block coupling portion 120, the plurality of front panel 100 is stacked integrally connected to each other in contact with the upper, lower, left and right sides, integrally, through the center from the front to the back through the perforation A plurality of connection blocks 300 on which connection holes 310 are formed; A plurality of connection plates 400 installed in the rear of the connection block 300 in the form of a perforated plate as a whole; A plurality of bolts 500 and nuts 600 fastened through the connection hole 310 of the connection block 300 and a hole drilled in the center of the connection plate 400; And, A plurality of ground stiffeners (1) having one end fixed to the cut slope and the other end of the ground reinforcing material filling pack through hole 210 and the ground reinforcing material panel fixing through hole 110 fixed to the front surface of the front panel; Prefabricated retaining wall structure is inserted into the reinforcement, characterized in that consisting of. In claim 1, The filling pack 200 is further formed integrally with a gasket coupling portion 230 in which a plurality of screw holes are drilled in a predetermined width around the filling pack 200. A plurality of gaskets 250 in which a plurality of screw holes are drilled; And, A plurality of filling pack fixing screws 260 which pass through the screw hole of the gasket 250 and the screw hole of the gasket coupling part 230 and are fastened to the rear surface of the front panel 100; Prefabricated retaining wall structure is inserted into the reinforcement, characterized in that further comprises a. In the construction method of prefabricated retaining wall structure with reinforcement inserted, (a) an excavation step of arranging the ground where the retaining wall is to be installed and excavating at a predetermined slope according to the ground state to form an inclined surface to the bottom; (b) reinforcing step of reinforcing the inclined surface by fixing the ground reinforcement material (1) from the first end to the top end of the lower portion at regular intervals on the inclined surface; (c) a foundation concrete block construction step of forming a foundation concrete 700 by placing reinforcing steel in the lower portion of the inclined surface and placing concrete; (d) The combination of the front panel 100 and the filling pack 200 of claim 1 or 2 in a horizontal line so that the lower end of the ground reinforcing material (1) of the first stage installed at the bottom of the inclined surface penetrates horizontally Mounting, the connection block 300 and the connecting plate 400 of the connection block coupling portion 120 of the plurality of front panel 100 placed horizontally in contact with each other and the left and right sides of the bolt 500 and the nut 600 Assembling the first stage panel assembly step; (e) a first stage filling step of injecting a filler into the installed filling pack 200; (f) a first stage ground reinforcing material tensioning step of tensioning a lower end of the ground reinforcing material 1 of the first stage; And, (g) an iterative construction step of sequentially repeating the steps of (d) to (f) from the second stage to the top stage; Construction method of prefabricated retaining wall structure is inserted into the reinforcement, characterized in that consisting of. In the construction method of prefabricated retaining wall structure with reinforcement inserted, (a) a first end excavation step of arranging the ground where the retaining wall is to be installed and excavating only the first end with a predetermined slope according to the ground state to form a first end slope; (b) a first end reinforcing step of reinforcing the inclined surface by fixing the ground reinforcement material 1 at left and right intervals on the first end slope surface; (c) Mounting the combination of the front panel 100 and the filling pack 200 of claim 1 or 2 horizontally so that the lower end of the ground reinforcing material (1) installed on the first end slope in a horizontal line, each other By connecting the connection block 300 and the connection plate 400 to the connection block coupling portion 120 of the plurality of front panels 100 placed horizontally in contact with the left and right surfaces by bolts 500 and nuts 600. Installing the first stage panel assembly step; (d) a first stage filling step of injecting a filling material into the installed filling pack 200; (e) a first stage ground reinforcing material tensioning step of tensioning a lower end of the ground reinforcing material 1 of the first stage; (f) an iterative construction step of sequentially repeating the steps of (a) to (e) from the second stage to the lowest stage; And, (g) reinforcing the reinforcing bar at the lower end of the inclined surface and placing the concrete to form the foundation concrete 700 to form the foundation concrete 700; Construction method of prefabricated retaining wall structure is inserted into the reinforcement, characterized in that consisting of.

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