KR101185423B1 - Reinforcement retaining wall - Google Patents

Abstract

PURPOSE: A reinforced earth retaining wall and a construction method thereof are provided to remarkably improve the stability of a structure by restricting backfill soil of the retaining wall. CONSTITUTION: A construction method of a reinforced earth retaining wall is as follows. Concrete foundations and guide walls are installed on the front bottom ends and the front surface of a reinforced earth retaining wall. Closed stiffeners are installed on the tops of the concrete foundations. Drain blocks are installed on the front surface of the lowermost portion of the retaining wall. The tops of the closed stiffeners are covered, and first soil filling and compacting works are performed. Tendons and pressure plates are installed, and the tendons are fixed to the soil filled ground at the rear of the retaining wall. Second soil filling and compacting works are formed on the top of the portion where the first soil filling and compacting works are performed. A first layer portion of the retaining wall is formed by coupling the ends of the closed stiffeners to each other and is reinforced by tensioning the tendons. [Reference numerals] (AA) Vegetation; (BB) Back filling section; (CC) Soil-filled ground

Description

Reinforced soil retaining wall for composite function and construction method {Reinforcement Retaining Wall}

The present invention relates to a composite functional reinforced soil retaining wall and its construction method, which is efficient, stable and easy to reinforce in a cut or fill site, and has a rigid reinforced layer for preventing groundwater drainage and retaining wall distribution. Belongs to the technical field.

In the case of the existing reinforced earth retaining wall, the civil reinforcement is installed in a straight line together with the front finishing wall and the backfilled soil, using the mutual frictional resistance of the reinforcement and the backfilled soil, and the horizontal resistance of the deadmen anchor method of the reinforcement. The stability of the reinforced earth retaining wall was secured.

In addition, the conventional reinforcement earth retaining wall is difficult to find the appropriate reinforcement plan when a problem occurs in the stability of the retaining wall after construction. In other words, if the retaining wall is deformed due to gradual growth, the method of reinforcing with anchors and the like is most efficient.

The current reinforcement method of the reinforced soil retaining wall is a structure in which friction force is generated in the reinforcement when displacement of the reinforced soil retaining wall occurs, and resistance is generated by the friction force. This is a passive resistance structure, in which displacement occurs in retaining wall construction.

In addition, in the case of rainwater, groundwater, and surface water drainage systems of existing retaining walls, drainage aggregate layers are installed at the front of the retaining wall and at the rear of the retaining wall, and thus, it is not possible to effectively drain surface water infiltration water flowing through the reinforcement sole layer.

In other words, in order for the rainwater to move to the front drainage layer, the retaining wall backfilling layer is wetted, and the soil retains water, and the strength decreases drastically, which causes the soil and the reinforcement to slip.

As described above, in the structure of the conventional reinforced earth retaining wall, problems such as improving the frictional resistance and the acupressure resistance of the reinforcing material, actively increasing the shear strength of the backfilled soil, and failing to actively perform the reinforcement when the fault occurs in the reinforced earth retaining wall Therefore, the present invention is intended to provide a system capable of actively reinforcing at the same time to play a basic role of the reinforcement earth retaining wall, and fully use the resistance of the reinforcement material, and also when the defect of the reinforcement earth retaining wall occurs.

In order to solve the above problems, in the present invention to increase the strength of the backfilled soil by the reinforcement, and to facilitate reinforcement, the present invention is to close the reinforcement by sealing the upper and lower ends and to give a tension force in the horizontal direction when necessary reinforcement soil The retaining wall was to be constructed step by step.

In addition, the horizontal guide strain gauge was installed to confirm the deformation shape of backfilled soil and reinforcement during construction to quantitatively check the deformation of backfilled soil upon completion of reinforcement earth retaining wall construction. To be installed.

Typical retaining wall construction methods are as follows.

Installing the concrete foundation 200 and the guide wall 300 at the lower end of the retaining wall front wall and the front of the retaining wall, respectively (s101);

Retaining wall step (S201) to expand and install the waste reinforcement reinforcement on the construction base surface of the concrete base;

Installing a drain block 700 having a space for discharging groundwater, surface water, etc., which penetrated into the reinforcement soil, in the retaining wall front surface of the first layer at the bottom of the retaining wall;

After the drain block is installed, covering the upper portion of the waste reinforcement to perform the first fill and compacting (s401);

If necessary, install a pressure plate 550 in the tension member 500 and the tension member before and after the tension member, the tension member penetrates through the drainage block 700 and is fixed to the inside of the filling ground on the rear side of the reinforcement soil retaining wall, thereby horizontally closing the layer. Reducing the directional load and displacement (s501);

Performing a second fill work on the first fill portion and then performing a second fill work compacting operation after the completion of the first fill work (s601);

A step (s701) in which the first layer portion of the lowermost part of the retaining wall is formed by combining the ends of the reinforcing reinforcement with each other by mutually coupling the ends of the reinforcing reinforcement;

Tensioning the tension member 500 installed in the first layer portion to solidify the first layer portion (s801);

During the formation of the retaining wall, in order to form the second layer part, the non-closed reinforcement 730 is laid out and installed in the upper position of the drain block 700 of the first layer, and then the drain block of the second layer is installed and the reinforcement material is installed. Forming a second layer of the retaining wall by bending the 730 and forming the U-shaped shape, and then performing a fill work on the rear surface thereof (s901);

The retaining wall is formed by repeatedly stacking the steps s201 to s901,

The coupling part 110, which is a position at which the ends of the reinforcing reinforcement material are coupled and closed, is installed at the rear side of the retaining wall close to the fill ground, thereby preventing the closed coupling part 110 from being separated according to the displacement of the reinforcement soil. Reinforced soil retaining wall construction method characterized in that the present invention is presented. There may be other modified methods other than the above, and the detailed description and embodiments of the present invention will be described in the detailed description.

The waste composite reinforcement of the present invention can significantly stabilize the stability of the structure due to the restraining effect of the retaining wall backfill soil.

In addition, since the groundwater, surface water, etc. are smoothly discharged through the drainage layer located in the upper part of the retaining wall layer, there is an advantage that the risk of retaining wall collapse due to the filling phenomenon of the retaining wall can be greatly reduced.

In addition, the reinforcement guide pipe (horizontal deformation guide displacement gauge) helps to make the reinforcing drilling work of the reinforcement soil retaining wall more precisely, thus preventing the perforator from being damaged due to the perforation bit and the reinforcing material being engaged in the conventional reinforcement work.

1 is a cross-sectional view of a conventional reinforced earth retaining wall,
Figure 2 is a sectional view of the reinforced soil retaining wall of the present invention,
3 to 7 is a view for explaining the construction sequence of the reinforced soil retaining wall of the present invention,
8 and 9 are views for explaining the structure and function of the drainage layer,
10 is a view for explaining the structure of the tension member,
11 and 12 are views for explaining the structure and function of the reinforcement guide pipe,
13 and 14 are views for explaining the effective length reduction of the advantages of the closed reinforcement of the present invention,
15 is a view for schematically illustrating the structural stability of the closed reinforcement of the present invention,
16 is a cross-sectional view of the reinforced soil retaining wall of the present invention with vegetation composition.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the scope of the present invention is not limited to the following examples, but the scope of the present invention is revealed to all inventions equivalent to those described in the claims.

1 is a cross-sectional view of a conventional retaining wall structure, and a grid reinforcement is installed in the retaining wall backfill soil (reinforced soil section). The conventional grid reinforcement is only a structure in which the retaining wall front is finished with a concrete block after being horizontally stacked in the reinforcement soil section, and has only the effect of the one-dimensional frictional resistance of the reinforcement and the soil.

Figure 1 shows the frictional resistance around this conventional flat grid reinforcement. That is, in order to generate frictional resistance against the pulling force of the conventional grid-shaped flat reinforcement, the vertical stress of the fill layer should act. In the conventional grid form, the structural stability of the retaining wall was fragile because it could not effectively restrain the soil in the retaining wall.

2 is a view of the reinforcement soil retaining wall is installed waste consolidation reinforcement 100 according to the present invention. The term closure refers to a feature of the present invention that is distinguished from the conventional reinforcement that is only installed flat, and means a reinforcement that functions to bundle and surround the drainage block and the soil layer at the front of the retaining wall at once. That is, the closed reinforcement member of the present invention is not a conventional flat grid shape, but is a reinforcement member having a three-dimensional shape by bending various portions of the conventional reinforcement member.

A concrete foundation 200, a resistance anchor 220, and an anchor bar 240 are installed below the reinforcement soil retaining wall, and a drain block 700 is sequentially stacked on the upper front portion. The drainage block forms a space for discharging groundwater and surface water. The cap block 720 is positioned at the top of the drain block.

In the lowermost part of the first layer, the reinforcement reinforcement surrounds the earth and sand and the drainage block 700, and the tension member 500 is installed therein. 12 illustrates the tension member and the pressure plate.

In the second layer portion, the reinforcing material 730, which is not closed, is provided in the shape of the letter C. Of course, the retaining wall may be formed by stacking the retaining wall to the upper end of the retaining wall in the same manner as the structure of the first layer.

The third layer is formed in the same structure as the first layer and extends to the upper side of the retaining wall.

The upper and lower predetermined layers may further include a drainage layer 400, which prevents surface water sewerage from infiltrating the retaining wall and prevents the entire deformation of the retaining wall by the rigid aggregate layer more effectively than the soil layer. For sake. The structure and function of the detailed drainage layer will be described later.

In the present invention, in view of the problems of the prior art, a closed reinforcement (100) of the shape surrounding the soil is applied. Here, the closed means that the soil reinforcement 100 is wrapped up and down, and constrains the soil to the inside of the reinforcement by welding or the like.

In the present invention, the most significant feature is that the sediment-filled reinforcement material 100 filled with soil is laminated at the time of filling the retaining soil retaining wall. When the soil is closed by the reinforcement material, the sedimented soil is integrally behaved. It becomes a stable structure like a gravity retaining wall.

This is because by closing the soil, the restraint pressure is increased to the soil body forming the closed soil, and the overall strength of the soil is increased in proportion to the magnitude of the restraint pressure.

In addition, when closing, the reinforcement 100 can reduce the length of the tensile resistance due to the effect of the passive resistance region in the material receiving the tensile force, so it can be expected that the economic benefit that can reduce the reinforcement construction length (back length). .

If the length of the reinforcement soil retaining wall is installed to the inside of the soil, that is, the rear length is reduced by the closure, the structure foundation installation range due to the interference of the reinforcement when the upper structure is installed can be further extended, so that the site can be developed more effectively.

As a result, the closed reinforcement exhibits the effect of restraining the retaining wall backfilled soil and at the same time, the reinforcement reinforcement itself can achieve structural stability.

Figure 15 schematically shows the structural stability when using the waste consolidation reinforcement of the present invention. 15 shows the unreinforced soil without reinforcement, and the figure on the upper right of FIG. 15 shows the basic concept of forming the retaining soil retaining wall, which can be constructed vertically when the reinforcement is installed. have.

On the other hand, the lower left and right of Figure 15 is a schematic representation that the more stable retaining wall structure can be installed by the reinforcement soil is integrally used when using the closed composite reinforcement of the present invention, the tension material as shown in the lower right of Figure 15 Installation shows that it is possible to form a more stable retaining wall structure.

The lower part of FIG. 2 schematically shows the stress relationship between the waste reinforcement and the surrounding soil. The structural stability of the retaining wall is obtained by obtaining both a frictional resistance force having a vector direction in the retaining wall and a passive resistance force on the rear surface of the retaining wall. Since the earthen body inside the waste reinforcement is integrally formed, it is possible to secure more robustness than the conventional retaining wall soils.

3 to 7 shows the construction sequence of the reinforced soil retaining wall of the present invention.

As shown in FIG. 3, first, the concrete foundation 200 is installed at the lower end of the front surface of the reinforced soil retaining wall as in the construction of the reinforced soil retaining wall. A resistance anchor 220 is installed behind the retaining wall, and the resistance anchor is connected between the concrete foundation and the anchor bar 240 to reinforce the stability of the concrete foundation. The guide wall 300 is installed upright on the retaining wall front part, but is inclined by a predetermined angle toward the rear filling section of the retaining wall.

This helps to improve the stability of the retaining wall's overall activity. If necessary, the guide wall can be removed after constructing the retaining wall. The guide wall can be made of various materials such as H beam, concrete, wood, etc., and it can be installed at the correct position when retaining wall is constructed.

Next, as shown in FIG. 4, the waste reinforcement reinforcement 100 is laid out on the bottom surface. The consolidation reinforcement 100 in FIG. 4 is not yet closed, and after the work of filling the drainage block 700 and the first layer of the front surface is completed, the reinforcement unfolded in FIG. 5 is finally closed by welding or the like.

After installing the closed reinforcement material 100 in FIG. 4, the drainage block 700 of the first layer is installed. The drainage block is provided with a space for discharging groundwater and surface water that penetrates into the reinforcement soil. The drain block front part may also be the front finish of the reinforced earth retaining wall.

After the drainage block is installed, the first fill and compaction work is performed, and then a tension member 500 and acupressure plate 550 made of PC steel wire or steel bar (STEEL BAR) or other steel wire are installed. The tension member penetrates the drainage block and is fixed to the inside of the fill bed at the rear side of the reinforcement soil retaining wall, thereby reducing horizontal load and displacement, thereby preventing the retaining wall from collapsing to the front portion. After the tension member and the pressure plate are installed, the second fill and compaction work is performed. The tension member and the pressure plate may be omitted if necessary.

In FIG. 5, the ends of the reinforcing reinforcement materials are joined to each other by using a laser welding method or the like to form the first layer part by closing the reinforcing material. The laser welded portion is indicated by the coupling portion (110). Although the position of the coupling part 100 can be variously determined, it is more stable to install on the retaining wall rear side closer to the fill ground than in the retaining wall front side. In other words, the welded joints are continuously stressed according to the displacement of the filled reinforcement soil, because welding joining at the rear side of the retaining wall will effectively prevent the welded joints from being separated and destroyed.

And the joint can be used any number of methods modified in the art other than welding.

Then, by pulling (tensioning) the tension member 500 installed earlier, the first floor portion is firmly tightened.

Subsequently, a new reinforcement 730 and drainage block and fill work are performed to form the two-layer part. That is, in FIG. 5, the work is completed up to the second layer part. In the second layer, the reinforcement material 730, which does not close the condensation reinforcement material, is installed in a U-shape, and another drainage block is installed on the drainage block 700 of the first layer. The state as shown in FIG.

As shown in Fig. 6, the reinforced soil retaining wall is laminated in the same pattern from the third layer to the planned height.

At this time, it is preferable to incline at a predetermined angle toward the rear wall of the retaining wall from the first layer to the highest layer for the structural stability of the overall retaining wall.

On the other hand, the drainage layer 400 can be further provided in the upper part side among the whole height of the retaining wall during lamination | stacking. Since the drainage layer is intended to assist drainage, unlike each layer below the drainage layer, the drainage layer should not be inclined toward the rear of the retaining wall, and is preferably formed at least horizontally or slightly inclined toward the front wall of the retaining wall.

This drainage layer is installed to effectively discharge groundwater, surface water, and the like, which penetrate from the top of the reinforced soil retaining wall. In addition, the drainage layer is more rigid than the soil layer. High stiffness means that the deformation is smaller and more stable against external forces. In other words, if the stiffening layer is installed at the position where the phenomenon such as the filling phenomenon in the reinforced soil retaining wall is expected, the filling phenomenon of the retaining wall may be reduced. The drainage layer is provided with a filter function material such as a nonwoven fabric to prevent the soil from the soil layer from leaking into the drainage layer.

On the other hand, the guide wall is removed when necessary, as shown in Figure 7, it is possible to finish the retaining wall using a variety of materials.

8 and 9, the function and advantages of the drainage layer 400 will be described.

Figure 8 shows the infiltration path of groundwater, surface water penetrating into the reinforcement soil in the conventional reinforcement soil retaining wall.

8, the curve extending from the upper right to the lower left is a path of groundwater and surface water that penetrates into the reinforcement soil. When water enters the reinforcement soil, the strength of the soil is weakened and the frictional resistance of the soil and the grid reinforcement is reduced. Will cause displacement to the front. As a result, as shown in FIG. 10, a full stomach protruding phenomenon may occur, which may lead to a collapse of the retaining wall.

In the present invention, the drainage layer 400 is installed to fundamentally block such a full stomach phenomenon. The horizontal drainage layer smoothes drainage by filling materials with large porosity, such as gravel, and minimizes displacement to external forces by increasing rigidity than the soil layer.

The order of forming the drainage layer 400 is similar to that of the retaining wall single layer forming step (FIGS. 3 to 5).

That is, first install the waste reinforcement reinforcement 100 and then install the drainage block 701 on the front, and then install the tension member 500 and the pressure plate 550 made of PC steel wire or steel bar (STEEL BAR). Then, after filling the rigid drainage material 430 and the like, the waste joint reinforcing material 100 is welded to the end and closed and then subjected to a process of firmly applying a tension force to the tension material (500).

As such, when the drainage layer 400 is formed, the water soaked from the top of the retaining wall as shown in FIG. 9 passes through the drainage layer and is smoothly discharged toward the drainage block 700 on the front of the retaining wall, unlike in FIG. 8. Since it is not generated, it is possible to secure structural stability of the retaining wall.

FIG. 11 is a cross-sectional view of a conventional retaining wall subsidence, and FIG. 12 shows a cross section in which the reinforcing guide pipe 900 is installed in the reinforcing soil retaining wall of the present invention.

In general, the conventional reinforcement earth retaining wall is to compact the reinforcement soil sequentially. In the case of compaction from the lowest layer to the upper layer, settlement occurs due to the compaction at the position where the reinforcement is first installed. The size of the settlement depends on various site conditions, such as soil type, compaction, and the height of the retaining wall, which is very difficult to predict. In other words, it is difficult to know what kind of settlement occurred after the construction is completed (dashed line in Fig. 11).

However, it is not possible to determine the sedimentation degree of the soil inside the retaining wall for reinforcing the retaining wall.

As shown in FIG. 10, when a problem occurs in the safety of the retaining wall, such as the fullness of the retaining wall and the block breakage, the reinforcement method is very limited. The reinforcement method includes a method of installing anchors on the front wall of the retaining wall, a method of presenting the retaining wall, and a method of preventing deformation of the reinforced soil retaining wall through a concrete retaining wall or an overlaid soil if there is a spare site in the front of the retaining wall. In other words, the most effective method is the anchor method.

In order to reinforce the retaining wall, it is necessary to perforate the retaining wall front part and construct an anchor or the like through the perforation part. However, since the sedimentation degree of sediment inside the retaining wall cannot be grasped, it is very difficult to drill while avoiding the reinforcing material (see FIG. 1) in which the drilling bits are horizontally stacked. If the drill bit is hit with the reinforcing material, the reinforcing material is wound around the drill bit and eventually breakage of the drilling bit, a technique for preventing this case was necessary.

To solve this is to construct a reinforcement guide pipe (900). That is, in the reinforced earth retaining wall structure according to the present invention, it is preferable to install the reinforcing guide pipe 900 from the front part of the appropriate layer to the retaining wall trailing area when laminating as shown in FIGS. 3 to 6 step by step.

Subsequently, when reinforcement repair is required, when the perforation bit is slowly drilled along the reinforcement guide pipe 900, the drilling can be performed while avoiding the reinforcing material, so that the drilling work can be effectively performed. Since the pipe-shaped part is hollow inside, it can be drilled very easily during drilling. This method is very simple and effective to repair the reinforced earth retaining wall.

Further advantages of the closed reinforcement of the present invention will be described. That is, FIGS. 13 and 14 illustrate calculation of the minimum effective frictional resistance length of the retaining wall and the outside of the breaking line in order to calculate the effective length of the reinforcement of the reinforcement retaining wall. The general reinforcement of the retaining wall (refer to FIG. 1) is a retaining wall. At the top, the vertical load decreases, and as the vertical force decreases, the friction between the reinforcement and the soil decreases. Therefore, the reinforcement should be installed longer, in order to secure the effective length (Le) toward the top.

In the present invention, it is shown in FIG. 14 that the effective length can be minimized by the waste reinforcement 100 described above. That is, when the effective length is reduced, there is an advantage that the site utilization of the structure (building) on the retaining wall is increased, which corresponds to one of the advantages of the waste reinforcement proposed in the present invention.

16 shows a state in which vegetation is placed on the retaining wall retaining wall of the present invention.

100: closed reinforcement 110: coupling portion
200: concrete foundation
300: Guide wall
400: drainage layer 430: rigid drainage material
500: tension material
550: pressure plate
700: drain block
900: reinforcement guide pipe

Claims (6)

In the reinforced soil retaining wall construction method,
Installing the concrete foundation 200 and the guide wall 300 on the front lower portion and the retaining wall front surface of the reinforced soil retaining wall, respectively (s100);
Retaining wall step (S200) to expand and install the waste reinforcement reinforcement on the construction bottom surface of the concrete base;
Installing a drain block 700 having a space for discharging groundwater, surface water, etc. penetrated into the reinforcement soil in the retaining wall front surface of the first layer at the bottom of the retaining wall (s300);
After the drain block is installed, covering the upper portion of the waste reinforcement and the first filling and compacting work (s400);
The tension member 500 and the pressure bearing plate 550 are installed at the front and rear ends of the tension member, and the tension member penetrates the drainage block 700 and is fixed to the inside of the fill ground at the rear side of the retaining wall retaining wall, thereby reducing horizontal load and displacement. To make (s500);
Performing a second fill work on the first fill part by the second fill work and then performing a second fill work compaction operation after the completion of the first fill work (s600);
A step (s700) in which the first layer portion of the lowermost part of the retaining wall is formed by combining the ends of the reinforcing reinforcement with each other and the reinforcing material is closed;
Tensioning the tension member 500 installed in the first layer portion to solidify the first layer portion (s800);
Repeated stacking step s800 to step s800,
The coupling part 110, which is a position where the ends of the waste reinforcement reinforcement member are coupled and closed, is installed at the rear side of the retaining wall close to the fill ground, thereby preventing the closed coupling part 110 from being separated according to the displacement of the filled reinforcement soil. Reinforced wall retaining wall construction method characterized in that the composite.
Installing the concrete foundation 200 and the guide wall 300 at the lower end of the retaining wall front wall and the front of the retaining wall, respectively (s101);
Retaining wall step (S201) to expand and install the waste reinforcement reinforcement on the construction base surface of the concrete base;
Installing a drain block 700 having a space for discharging groundwater, surface water, etc., which penetrated into the reinforcement soil, in the retaining wall front surface of the first layer at the bottom of the retaining wall;
After the drain block is installed, covering the upper portion of the waste reinforcement to perform the first fill and compacting (s401);
The tension member 500 and the pressure bearing plate 550 are installed at the front and rear ends of the tension member, and the tension member penetrates the drainage block 700 and is fixed to the inside of the fill ground at the rear side of the retaining wall retaining wall, thereby reducing horizontal load and displacement. To make (s501);
Performing a second fill work on the first fill portion and then performing a second fill work compacting operation after the completion of the first fill work (s601);
A step (s701) in which the first layer portion of the lowermost part of the retaining wall is formed by combining the ends of the reinforcing reinforcement with each other by mutually coupling the ends of the reinforcing reinforcement;
Tensioning the tension member 500 installed in the first layer portion to solidify the first layer portion (s801);
During the formation of the retaining wall, in order to form the second layer part, the non-closed reinforcement 730 is laid out and installed in the upper position of the drain block 700 of the first layer, and then the drain block of the second layer is installed and the reinforcement material is installed. Forming a second layer of the retaining wall by bending the 730 and forming the U-shaped shape, and then performing a fill work on the rear surface thereof (s901);
The retaining wall is formed by repeatedly stacking the steps s201 to s901,
The coupling part 110, which is a position at which the ends of the reinforcing reinforcement material are coupled and closed, is installed at the rear side of the retaining wall close to the fill ground, thereby preventing the closed coupling part 110 from being separated according to the displacement of the reinforcement soil. Reinforced soil retaining wall construction method characterized in that the composite.
Installing the concrete foundation 200 and the guide wall 300 at the lower end of the reinforced soil retaining wall front and the retaining wall, respectively (s102);
Retaining wall step (s202) to expand the installation of the waste reinforcement reinforcement on the bottom surface of the concrete foundation;
Installing a drain block 700 having a space for discharging groundwater, surface water, etc. penetrated into the reinforcement soil in the front of the retaining wall at the bottom of the retaining wall at the first layer (s302);
After installing the drain block, covering the upper portion of the waste reinforcement and filling and compacting work (s402);
A step (s502) in which the first layer portion of the lowermost part of the retaining wall is formed by combining the ends of the reinforcing stiffeners with each other;
During the formation of the retaining wall, in order to form the second layer part, the non-closed reinforcement 730 is laid out and installed in the upper position of the drain block 700 of the first layer, and then the drain block of the second layer is installed and the reinforcement material is installed. Forming a second layer of the retaining wall by bending the 730 and forming the U-shaped shape, and then performing a fill work on the rear surface thereof (s602);
The retaining wall is formed by repeatedly stacking the steps s202 to s602,
The coupling part 110, which is a position at which the ends of the reinforcing reinforcement material are coupled and closed, is installed at the rear side of the retaining wall close to the fill ground, thereby preventing the closed coupling part 110 from being separated according to the displacement of the reinforcement soil. Reinforced soil retaining wall construction method characterized in that the composite. Reinforced soil retaining wall,
A composite functional reinforced soil retaining wall formed by the method of any one of claims 1 to 3. The method according to any one of claims 1 to 3,
During the stacking of each layer of the retaining wall, a drainage layer 400 is further installed on the upper part of the retaining wall to prevent the retaining of the retaining wall.
First install the waste reinforcement reinforcement 100, and then install the drainage block 701 on the retaining wall front, then install the tension member 500 and the pressure plate 550, and filling the gravel material 430, and then closed By combining the ends of the reinforcing material 100 and then closing, it is formed through the process of applying a tension force to the tension member 500 to securely,
Water penetrating from the top of the retaining wall is smoothly discharged toward the drainage block 700 on the front of the retaining wall as it passes through the drainage layer, and does not cause a load phenomenon such as to ensure structural stability of the retaining wall. Retaining wall construction method. The method according to any one of claims 1 to 3,
During post-reinforcement of the retaining wall, in order to prevent the reinforcing guide pipe 900 penetrating through the inner part of the retaining wall from colliding with the punching bit and the reinforcing material, the retaining wall penetrates the inside of a predetermined layer from the first layer to the top layer of the retaining wall. By installing up to the retaining wall trailing area,
Subsequently, when reinforcement repair is required, if the perforation bit is slowly drilled along the reinforcement guide pipe 900, it is possible to perforate while avoiding reinforcement, so that the perforation work can be effectively performed.
Construction method of composite functional reinforced soil retaining wall.

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