KR102132732B1 - Apparatus for building retaining wall using block-shaped resistor and band type reinforcement, and method for building retaining wall using the same - Google Patents

Abstract

The present invention relates to an apparatus for installing a retaining wall using a block type resistor and a band type stiffener and a method for installing a retaining wall using the same. According to an embodiment of the present invention, disclosed are the apparatus for installing a retaining wall using the block type resistor and the band type stiffener and the method for installing a retaining wall using the same, wherein the apparatus installs the retaining wall by vertically stacking geocells configured by allowing a plurality of unit cells to be coupled to each other. The apparatus for installing a retaining wall is rigidly supported by providing pulling resistance to the geocells forming the retaining wall by using the block type resistor and the band type stiffener installed in the middle of a floor formed by a plurality of geocells, thereby improving constructability, safety and economic feasibility of the retaining wall.

Description

Apparatus for building retaining wall using block-shaped resistor and band type reinforcement, and method for building retaining wall using the same}

The present invention relates to a retaining wall installation mechanism using a block-shaped resistor and a strip-shaped reinforcement, and a retaining wall installation method using the same, for stacking up and down a geocell composed of a plurality of unit cells, to install a retaining wall, and a plurality of geocells By using a block-shaped resistor installed in the middle of this layer and a strip-shaped reinforcement material to provide a pull-out resistance to the geocell constituting the retaining wall so that it can be supported firmly, the block-shaped resistor and the strip-shaped body have improved workability, safety, and economy of the retaining wall. Retaining wall installation mechanism using a reinforcement, and relates to a retaining wall installation method using the same.

Geocell (geocell) is a synthetic resin plate with a thickness of about 1 to 2 mm, made of honeycomb-shaped three-dimensional shape, and is a geosynthetic reinforcing material. It is used to maximize the shear strength and bearing capacity of the ground by increasing the engineering characteristics.

The ground reinforcement effect using the geocell is expressed by the circular stress of the cell against external force, the passive resistance of the adjacent cell, and the frictional resistance between the soil/geocell, and the geocell layer is one having a certain thickness by these three resistance forces. It functions as a rigid body.

A number of prior arts have been proposed for use in reinforcing sections and slopes of soil using geocells.

As an example, the Republic of Korea Patent Registration 10-1513681 (registered on April 14, 2015) relates to an anchor mechanism for fixing a slope reinforcement frame, a post having a predetermined length, and a slope reinforcement frame (geocell) provided on the top of the post An anchor mechanism for fixing a slope reinforcement frame is proposed, which includes a hook member that is engaged with the upper end of the post, and a wedge member that is provided at the lower end of the post and is deformed so as not to fall out of the ground in a state of being embedded in the ground.

As another example, Republic of Korea Utility Model 20-2016-0001021 (published on March 29, 2016) relates to a vegetation-type slope reinforcement device, comprising a plurality of sheets, and each sheet is disposed in parallel with each other. The sheets are formed by forming a plurality of filling spaces by partially joining adjacent sheets at regular intervals in the longitudinal direction, and the sheet is made of a flexible synthetic resin material, and the sheet is equipped with reinforcing means to increase tensile strength and compression resistance. Jin vegetation type slope reinforcement device was proposed.

As another example, Republic of Korea Patent Publication No. 10-2017-0085429 (published on July 24, 2017) relates to a ground reinforcement device, which prevents a joint from being torn or damaged in the process of forming a filling space filled with reinforcing soil. And, to make the size of each filling space the same so that the load applied by the reinforcing soil is evenly distributed, a slope reinforcement device is proposed to prevent the loss of reinforcing soil filled in the filling space.

However, the proposed prior art is a configuration using a geocell for reinforcing a slope, a structure in which a plurality of geocells are stacked in the vertical direction, for example, a structure in which a geocell is stacked in multiple layers for installation of a retaining wall or the like. For this, there was a limit in proposing a stable installation structure.

For example, in the case of installing a retaining wall by stacking a plurality of geocells in the vertical direction, a structure that prevents the geocells from moving in the transverse direction due to the earth pressure should be reflected, unlike when installed as a single layer on a slope. They had limitations in suggesting this configuration.

In addition, some prior arts have proposed a reinforcing structure using a geocell stacked in multiple layers on a slope, but there is a limitation that it is not stable as a structure for forming a retaining wall at a sharp angle to a cut surface, unlike a slope with a gentle slope.

Republic of Korea Registered Patent 10-1513681 (registered on April 14, 2015) Republic of Korea Utility Model 20-2016-0001021 (released on March 29, 2016) Republic of Korea Patent Publication 10-2017-0085429 (published on July 24, 2017)

The present invention has been devised in view of the above problems, and is for installing a retaining wall by stacking up and down geocells formed by combining a plurality of unit cells, a block shape installed in the middle of a layer formed by a plurality of geocells By using a resistor and a stiffener to provide a pull-out resistance to the geocell constituting the retaining wall so that it is supported firmly, a block-shaped resistor that improves the construction, safety, and economy of the retaining wall and a mechanism for installing a retaining wall using a stiffening member and a retaining wall using the same It is an object to provide an installation method.

According to one aspect of the present invention in consideration of the above object, as a mechanism for installing a retaining wall by stacking a plurality of geocells up and down on the front side of the inclined surface and putting soil into the geocell, the transverse direction on the front side of the inclined surface A block-shaped resistor that is unfolded and placed on the top of the unit cell of the geocell, which is filled with earth and sand; And a bending portion forming a state surrounding the front and left and right sides of the block-shaped resistor and an expanding portion extending in a transverse direction toward the inclined surface, and being installed to be positioned in the middle of a plurality of geocells stacked up and down. Containing; a belt-shaped reinforcement, the block-shaped resistor is received from the pull-out resistance from the belt-shaped reinforcing material, a block configured to form a stacked state on the upper and lower portions of the block-shaped resistor and prevent the lateral movement of the geocell filled geocell Disclosed is a mechanism for installing a retaining wall using a shape resistor and a strip-like reinforcement.

Preferably, the band-shaped reinforcement forms a rear bending portion at the rear end side of the unfolding portion, and the unfolding direction in the rear bending portion is switched to the front side of the inclined surface and is disposed to extend to the geocell side, and the strip-shaped reinforcement disposed to extend to the geocell side is Another bending portion forming a state surrounding the front and left and right sides of another block-shaped resistor is formed.

Preferably, further comprising a rear block-shaped resistor mounted on the rear end side of the unfolding portion, the band-shaped reinforcement forms a state surrounding the rear side and the left and right sides of the rear block-shaped resistor in the rear bending portion.

Preferably, the band-shaped reinforcing material is formed in a strip shape having a predetermined width, and in the section forming the bending portion, partially formed in an upright state to form a state surrounding the front and left and right sides of the block-shaped resistor, the section forming the spreading portion Esau maintains a lying state in the same direction as the ground to receive the earth pressure applied from the top.

According to another aspect of the present invention, as a retaining wall installation method using the retaining wall mounting mechanism, 1) injecting soil into the unit cell of the geocell in a state in which the geocell is spread in the transverse direction on the front side of the inclined surface that needs to be filled with soil. And then subjecting the soil filling process to the soil filling process in the middle space between the rear side of the geocell and the front side of the inclined surface; 2) depositing a block-shaped resistor on top of any one or more of the soil-filled unit cells; 3) installing a band-shaped stiffener so as to form a bending part surrounding the front and left and right sides of the block-shaped resistor and a spread part extending transversely to the inclined surface; And 4) In the state in which a geocell layer is formed by spreading another geocell on the upper portion of the band-shaped reinforcement material, the soil is filled into the unit cell of the another geocell to process the filling of the soil, and the rear surface and the inclined surface of the another geocell. Retaining wall installation, characterized in that to install the retaining wall, the geocell is stacked to the top by repeating the steps 2) to 4), including, after the step of filling the soil filling process in the intermediate space of the front side of the The method is disclosed.

Preferably, the present invention, in addition to the step 2), 2') the step of depositing a rear block-shaped resistor on the top of the earth-filled position in the intermediate space on the front side of the rear side and the inclined surface of the geocell; further comprising With the above step 3), 3') forming a rear bending portion of the belt-shaped stiffener at the rear end side of the unfolding portion, and the belt-shaped stiffener surrounding the rear side and the left and right sides of the rear block-shaped resistor at the rear bending portion. It is configured to include more; to achieve.

The present invention, by providing a pull-out resistance to the geocell constituting the retaining wall by using a block-shaped resistor and a band-shaped reinforcement material installed in the middle of the layer formed by a plurality of geocells, so as to be supported firmly, construction and safety of the retaining wall , Has the advantage of improving economic efficiency.

In particular, the present invention effectively prevents the geocell from being conducted in the free surface direction due to vertical and horizontal soil pressures caused by soil and rod loading at the rear portion of the retaining wall.

1A to 1C are side cross-sectional configuration diagrams of a retaining wall installation mechanism according to an embodiment of the present invention,
2A to 2C are schematic views showing the planar and lateral directions of main elements of the retaining wall installation mechanism according to an embodiment of the present invention;
Figure 3 is an exploded view of the retaining wall installation mechanism according to the embodiment of Figure 1b,
Figure 4 is a schematic view of the bending portion of the belt-shaped reinforcement of the retaining wall installation mechanism according to an embodiment of the present invention,
Figure 5 is a side cross-sectional configuration of the bending portion of the belt-shaped reinforcement of the retaining wall installation mechanism according to an embodiment of the present invention,
Figure 6 is a schematic diagram for explaining the installation process of the retaining wall installation mechanism according to the embodiment of Figure 1b,
7 and 8 is a schematic view for explaining the retaining wall installation process.

The present invention can be implemented in various other forms without departing from its technical spirit or main characteristics. Therefore, the embodiments of the present invention are merely illustrative in all respects and should not be interpreted as limiting.

Terms such as first and second are used only for the purpose of distinguishing one component from other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may be referred to as a first component.

When an element is said to be "connected" or "connected" to another component, it may be directly connected to or connected to the other component, but other components may exist in the middle.

The singular expression used in the present application includes the plural expression unless the context clearly indicates otherwise. In the present application, the terms "comprises" or "have", "have", etc. are intended to express the presence of a component or a combination thereof described in the specification, and the possibility that another component or feature is present or added. It is not excluded in advance.

7 and 8 is a schematic view for explaining the retaining wall installation process.

7 is a cross-sectional topography. Referring to FIG. 7, in order to form a flat ground L1 in the middle of the inclined toposurface TL, after removing the soil in the S2 area, a retaining wall is installed in the L2 position, and the soil in the S1 area is filled with soil (soil). Stacking), the retaining wall must be installed in the L3 position.

The retaining wall (RW1 or RW2) of the present embodiment may be installed to reinforce the fill portion (soil pile section) of the inclined portion 102a of the inclined portion among the inclined surfaces, as illustrated in FIG. 8. It can also be installed to reinforce the forcing surface 102b.

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

1A to 1C are side cross-sectional configuration diagrams of a retaining wall installation mechanism according to an embodiment of the present invention, and FIGS. 2A to 2C are schematic views showing a planar direction and side directions of main elements of a retaining wall installation mechanism according to an embodiment of the present invention, 3 is an exploded view of the retaining wall installation mechanism according to the embodiment of FIG. 1B, FIG. 4 is a schematic view of a bending portion of a strip-shaped reinforcement member of the retaining wall installation mechanism according to the embodiment of the present invention, and FIG. 5 is an embodiment of the present invention It is a side cross-sectional configuration diagram of the bending part of the strip-shaped reinforcement of the retaining wall installation mechanism according to.

The retaining wall installation mechanism of this embodiment can be suitably applied to the installation of the retaining wall RW1 for reinforcing the inclined surface 102a described above. The inclined surface 102a may be understood as an inclined surface that needs to be filled with soil.

The retaining wall installation mechanism of this embodiment is a mechanism for installing a retaining wall by stacking the geocell 10 on the front side of the inclined surface 102 and introducing soil S into the geocell 10. The geocell 10 may be, for example, a thickness of 1.0 mm or more and a height of about 200 mm or more. For example, the geocell 10 may have a transverse width of 600 mm or more and a length of 2000 mm or more while the three unit cells 12 are extended in the transverse direction (front to back).

The retaining wall mounting mechanism of this embodiment includes a block-shaped resistor 20 and a strip-shaped reinforcement 30.

The block-shaped resistor 20 is placed in the upper portion of the unit cell 12 of the geocell 10, which is spread in the transverse direction T on the front side of the inclined surface 102 and filled with soil (S) therein. As an example, the block-shaped resistor 20 may be made of a concrete material, or may be made of a rectangular parallelepiped block. The rear block-shaped resistor 20 ′ described later may also be manufactured in the same form.

The block-shaped resistor 20 may be placed on the top of the sediment layer Sd of the lower geocell 10 as shown in (a) of FIG. 5 and may be located inside the sediment layer Su of the upper geocell 10, and FIG. 5 As shown in (b), some may be located inside the sediment layer Sd of the lower geocell 10 and some may be located inside the sediment layer Su of the upper geocell 10. The rear block-shaped resistor 20 ′ described later may also be installed in the same form.

The strip-shaped reinforcement 30 extends in the transverse direction (T) toward the bending portion 30a and the inclined surface 102 that form a state surrounding the front side 20f and the left and right sides 20u of the block-shaped resistor 20. It includes an unfolding portion (30b) to form an unfolded state, it is installed to be positioned in the middle of the plurality of geocells 10 stacked up and down. The band-shaped reinforcing material 30 is not limited to a specific material, and may be manufactured to have predetermined stiffness, elasticity, and frictional surface properties using, for example, synthetic fiber polymer materials such as polyamide, polyester, and polystyrene.

Preferably, the strip-shaped reinforcement 30 is formed in a strip shape having a predetermined width (w), and in the section forming the bending portion 30a, the front side 20f and the left and right sides 20u of the block-shaped resistor 20 ) To form a partially upright state to form a wrapping state. Through this upright bending state, the contact area with respect to the block-shaped resistor 20 can be maximized to transmit the forces transmitted to each other in a dispersed form through the largest area.

In addition, in the section forming the unfolding portion 30b, the strip-shaped reinforcing material 30 maintains a lying state in the same direction as the ground so as to receive the earth pressure SP applied from the top through a large area as much as possible.

Through this structure, the retaining wall installation mechanism of the present embodiment, the block-shaped resistor 20 receives the drawing resistance TF from the band-shaped reinforcement 30, and is stacked on the upper and lower parts of the block-shaped resistor 20 It is configured to prevent the lateral movement of the geocell (10) filling the soil (S).

In another aspect, the block-shaped resistor 20 of the present embodiment is lowered by the earth pressure of the upper portion of the bending portion 30a of the band-shaped reinforcing material 30 or the rear bending portion 30c, which will be described later, due to laying/compacting of the soil. It is prevented from being flatly deformed by being pressed with, and the bending portion 30a of the band-shaped reinforcement 30 or the rear bending portion 30c, which will be described later, partially forms an upright state and maintains the state, thereby transversing the soil. It provides an effect of further increasing the movement resistance of the strip-shaped reinforcement 30 against movement.

In addition, since the band-shaped reinforcement 30 is a structure suitable for providing a pull-out resistance TF in the front-rear direction, it is advantageous in terms of damage resistance compared to a net-shaped reinforcement in which stress is transmitted in various directions, and for soil movement in the front-rear direction. It is more suitable for providing optimized resistance.

The unfolding portion 30b of the strip-shaped reinforcing material 30 may be deformed and installed in various structures in consideration of the installation environment and conditions.

As illustrated in FIGS. 1A and 2A as an example, in the band-shaped reinforcement 30, the rear end of the unfolding portion 30b is formed as a free end, and the earth pressure (SP) applied from the top in the unfolding portion 30b section Keep lying in the same direction as the ground to receive ).

Through this configuration, the pull-out resistance force TF generated based on the earth pressure SP applied from the top with respect to the area in which the unfolding portion 30b is lying down is transmitted to the block-shaped resistor 20. . The pull-out resistance TF generated based on the earth pressure SP can be regarded as a kind of frictional resistance and/or tensile resistance.

Through this structure, the retaining wall installation mechanism of the present embodiment, the block-shaped resistor 20 receives the drawing resistance from the band-shaped reinforcement 30, forms a stacked state on the upper and lower portions of the block-shaped resistor 20 (S) The transverse (T) movement of the filled geocell 10 is prevented through the frictional resistance of the block-shaped resistor 20.

As illustrated in FIGS. 1B and 2B as another example, the belt-shaped reinforcement 30 forms a rear bending portion 30c at a rear end side of the expanding portion 30b, and an expanding direction in the rear bending portion 30c. It can be switched to the front (F) side of the inclined surface 102 may be extended to the geocell 10 side.

In the section forming the rear bending portion 30c, the band-shaped reinforcement 30 is subjected to its own stiffness and internal stress due to bending, so that the portion bent in the shape of an “U” is partially upright. The portion bent in the form of a “U” shape provides resistance to lateral movement in a state filled with soil (S), so that the pull-out resistance of the strip-shaped reinforcement 30 can be further reinforced without installing a block body or the like.

In this state, the strip-shaped reinforcement 30 extended to the geocell 10 side is another bending portion 30a forming a state surrounding the front side 20f and the left and right sides 20u of another block-shaped resistor 20 ).

In another example, as illustrated in FIGS. 1C and 2C, the belt-shaped reinforcement 30 forms a rear bending portion 30c at a rear end side of the spreading portion 30b and is expanded in the rear bending portion 30c. The inclined surface 102 may be converted to the front (F) side and may be extended to the geocell 10 side.

In this state, a rear block-shaped resistor 20' mounted on the rear end side of the unfolding portion 30b is further provided, and the belt-shaped stiffener 30 is provided with the rear block-shaped resistor at the rear bending portion 30c ( It is possible to achieve a state surrounding the rear side 20f' and the left and right sides 20u' of 20').

In addition, in the section forming the rear bending portion 30c, the strip-shaped reinforcement 30 is partially upright to form a state surrounding the rear side 20f' and the left and right sides 20u' of the rear block-shaped resistor 20'. To achieve the state.

6 is a schematic view for explaining the installation process of the retaining wall installation mechanism according to the embodiment of Figure 1b.

The example of FIG. 6 exemplifies a case where a retaining wall is installed to reinforce soil and fill the soil with respect to the inclined surface 102a of the slope.

First, filling the soil (S) by putting the soil (S) into the unit cell (12) of the geocell (10) in a state in which the geocell (10) is extended in the transverse direction to the front side of the inclined surface (102) that needs to be filled with soil. Processing. Digging may also be done during the filling process. In addition, the intermediate spaces on the rear side of the geocell 10 and the front side of the inclined surface 102 are processed to fill the soil (S) with a degree similar to the filling height of the soil (S) of the geocell 10. From one point of view, the section in which the filling process of the earth and sand is performed can be viewed as the back filling section of the retaining wall.

The block-shaped resistor 20 is placed on any one or a plurality of upper portions of the unit cell 12 treated with the earth and sand (S). In the case of the embodiment of FIG. 1C, the rear block-shaped resistor 20 ′ may be further placed between the block-shaped resistor 20 and the inclined surface 102.

The band-shaped reinforcement 30 is installed so as to surround the front side 20f and the left and right sides 20u of the block-shaped resistor 20. In the case of the embodiment of Figure 1c, the band-shaped reinforcement 30 may be further configured to be in a state surrounding the rear side 20f' and the left and right sides 20u' of the rear block-shaped resistor 20'.

Subsequently, at least one geocell 10 layer is formed on the upper portion of the strip-shaped reinforcement 30 and the soil (S) is filled by filling the soil (S), and the rear surface and the inclined surface (102) of the geocell (10) ) In the intermediate space on the front side, the soil (S) filling process is performed to a level similar to the filling height of the soil (S) of the geocell 10, and another block-shaped resistor 20 and a strip-shaped reinforcement 30 are disposed on the top. Install it. In the case of the embodiment of Figure 1c, a rear block-shaped resistor 20' is further installed.

By repeating the above process, a plurality of geocells 10 are stacked up and down on the front side of the inclined surface 102 and the earth and sand S is introduced into the geocell 10 to install a retaining wall.

On the other hand, since the installation process of the retaining wall installation mechanism according to the embodiment of FIG. 1A is also performed through a process similar to the example of FIG. 6 described above except that the rear bending portion 30c is not formed, a duplicate description will be omitted.

Although the present invention has been described with reference to the accompanying drawings with reference to preferred embodiments, it is apparent to those skilled in the art that many various and obvious modifications are possible without departing from the scope of the present invention. Therefore, the scope of the invention should be construed by the claims set forth to cover these many variations.

10: Geocell
12: Unit cell
20: block-shaped resistor
20': rear block-shaped resistor
30: strip-shaped reinforcement
30a: bending section
30b: spread
30c: rear bending part

Claims (6)

As a mechanism for installing a retaining wall by stacking a plurality of geocells up and down on the front side of the inclined surface and put the soil into the geocells,
A block-shaped resistor placed transversely on the front side of the inclined surface and placed on the top of the unit cell of the geocell with soil filling inside;
It includes a bending portion forming a state surrounding the front and left and right sides of the block-shaped resistor and an unfolding portion extending in the transverse direction toward the inclined surface, and is installed in the middle of a plurality of geocells stacked up and down. reinforcement; And
Includes; a rear block-shaped resistor mounted on the rear end side of the unfolding portion,
The block-shaped resistor is configured to prevent transverse movement of a geocell filled with soil and formed in a stacked state on the upper and lower portions of the block-shaped resistor by receiving the pull-out resistance from the band-shaped reinforcement,
The band-shaped reinforcement material is formed to form a rear bending portion at the rear end side of the unfolding portion, and the unfolding direction at the rear bending portion is switched to the front side of the inclined surface and is extended to the geocell side,
The band-shaped reinforcing member extending to the geocell side forms another bending part forming a state surrounding the front and left and right sides of another block-shaped resistor,
The belt-shaped reinforcing material is a mechanism for installing a retaining wall using a block-shaped resistor and a belt-shaped reinforcing material, characterized in that the rear bending portion forms a state surrounding the rear and left and right sides of the rear block-shaped resistor.
delete delete According to claim 1,
The strip-shaped reinforcement is formed in the form of a strip having a predetermined width,
In the section forming the bending portion, the block-shaped resistor is partially upright to form a state surrounding the front and left and right sides,
In the section forming the unfolding portion, a retaining wall installation mechanism using a block-shaped resistor and a strip-shaped reinforcement, characterized in that it maintains a lying state in the same direction as the ground to receive the earth pressure applied from the top.
A retaining wall installation method using the retaining wall installation mechanism of claim 1,
1) Fill the soil into the unit cell of the geocell in a state in which the geocell is spread in the transverse direction on the front side of the inclined surface that needs to be filled, and then fill the soil with the soil filling process. Performing a filling process;
2) depositing a block-shaped resistor on top of any one or more of the soil-filled unit cells;
3) installing a band-shaped stiffener so as to form a bending part surrounding the front and left and right sides of the block-shaped resistor and a spread part extending transversely to the inclined surface; And
4) In the state in which a geocell layer is formed by spreading another geocell on the upper portion of the band-shaped reinforcement material, the soil is filled into the unit cell of the another geocell, and then the soil filling process is performed. Including the process of filling the soil in the middle space of the front side; includes,
Subsequently, the steps of 2) to 4) are sequentially repeated to install a retaining wall in which the geocell is stacked upward.
The method of claim 5,
With step 2) above,
2') depositing a rear block-shaped resistor on top of a location where the soil is filled in the intermediate space on the rear side of the geocell and the front side of the inclined surface;
With step 3) above,
3') forming a rear bending portion of the belt-shaped stiffener at the rear end side of the unfolding portion, and forming a state in which the belt-shaped stiffener wraps the rear side and the left and right sides of the rear block-shaped resistor at the rear bending portion. Retaining wall installation method characterized in that configured.

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