KR20180101986A - Methods for constructing retaining wall using fastening unit for stiffener - Google Patents

Abstract

According to a construction method of the present invention, when installing a stiffener such as a reinforcing bar, geogrid, and a strand to reinforce a retaining wall, a fastening unit for the stiffener is used to efficiently perform work and shorten working time. Moreover, a compressive force is applied to the ground with a strand to actively reinforce the retaining wall.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a retaining wall using a stiffener fixing unit,

The present invention relates to a method of constructing a retaining wall, and more particularly, it relates to a method of constructing a retaining wall, which can efficiently perform a work using a stiffener fixing unit when reinforcing materials such as reinforcing bars reinforcing reinforcing earth retaining walls, geogrid, And can be actively reinforced by applying a compressive force to the ground using a stranded wire.

Generally, the reinforced earth retaining wall is a retaining wall that stabilizes the body by generating additional confining pressure by inserting a reinforcing material having a large binding force with the soil into the soil to form a composite of the soil and the reinforcing material.

Such a reinforced earth retaining wall is easier to construct than other existing retaining walls, and is stable against uneven settlement and earthquake of foundation ground. In addition, unlike existing retaining walls, which are made of concrete at the construction site, the height of the retaining wall structure is high because the front wall (panel, block, etc.) and the reinforcing material are sequentially assembled. (Construction period) is shortened and the construction cost is greatly reduced, and it is advantageous in appearance.

As the reinforcing material, geosynthetics such as geogrid, belt, nonwoven fabric, woven fabric, etc. may be used, or reinforcing bars may be used. For example, the geogrid is installed between the blocks on the front of the retaining wall and is embedded in backfill material behind the retaining walls. The rear end of the geogrid is fixed to a slope or the like using a predetermined fixing device. The fixing device is disclosed in Korean Patent No. 817901 and the like.

However, the fixing device is complicated in construction process, has a high construction cost, can be applied only when an anchor is installed on a slope, and can not be applied when there is no anchor. Further, the fixing device is applicable only to geogrids, and can not be used when a reinforcing bar is used as a reinforcing material.

On the other hand, in the reinforced earth retaining wall, the front panel (panel) forms the front surface of the retaining wall and plays a passive role in preventing the earth leakage. That is, there is a limit that the front panel (panel) can not serve to reinforce the retaining wall.

The present invention has been proposed in order to solve the above problems, and it is an object of the present invention to provide a construction method capable of effectively installing a reinforcing material such as a reinforcing bar reinforcing reinforcing earth retaining wall or geogrid on the ground, There is a purpose.

Another object of the present invention is to provide a construction method using a stiffener fixing unit which can be used both when a reinforcing bar is used and when a geogrid is used.

It is still another object of the present invention to provide a construction method in which a front panel (panel) plays a role of reinforcing a retaining wall.

In order to solve the above-mentioned problems, a method of constructing a retaining wall according to a preferred embodiment of the present invention comprises the steps of: (a1) installing a stiffener fixing unit 110 at the rear of a block 10 or a panel 20; (b1) installing the transverse reinforcement rods (125) in the lateral direction so as to connect the plurality of stiffener fixing units (110) to each other; And (c1) connecting the rear end of the longitudinal reinforcement rope 123 to the stiffener fixing unit 110 and connecting the tip of the longitudinal reinforcement rope 120 to the block 10 or the panel 20.

The stiffener fixing unit 110 includes a first flat plate 112 and a second flat plate 116. The first flat plate 112 is installed in the same direction as the block 10 or the panel 20 and the first through holes 113 and 114 are formed in the first flat plate 112. The first through holes 113, And the rear end of the longitudinal reinforcing bar 123 is inserted and coupled to the rear end portion 114 of the frame.

The second flat plate 116 is vertically coupled to the first flat plate 112. A second through hole 117 is formed in the second flat plate 116 and a transverse reinforcement 123 is inserted through the second through hole 117.

The height h of the first flat plate 112 is preferably larger than the width w. The second flat plates 116 are provided on both sides of the first flat plate 112 and are provided on the first flat plate 112. The second flat plates 116 are provided with second through holes 117 Are formed at positions corresponding to each other so that the transverse reinforcement rods 125 can pass through the second flat plates 116 on both sides.

In the step (c1), the longitudinal reinforcement rods 120 are connected to the transverse coupling rods 121 at the front end thereof and the rear ends thereof are coupled to the stiffener fixing unit 110, The rear end thereof may be coupled to the panel 20 and the rear end thereof may be coupled to the transverse reinforcement rope 125 or the front end thereof may be coupled to the transverse coupling rope 121 and the rear end thereof may be coupled to the transverse reinforcement rope 125.

According to another preferred embodiment of the present invention, a method of constructing a retaining wall comprises: (A) cutting a slope and forming a perforation hole (40) on a slope; (B) inserting the reinforcing means (42) into the perforation hole (40) so that the upper end of the reinforcing means (42) protrudes out of the perforation hole (40); (C) installing a stiffener fixing unit 110 on the upper end of the reinforcing means 42; (D) installing the transverse reinforcement rods 125 in a lateral direction so as to connect the plurality of stiffener fixing units 110 to each other; And (e) connecting the rear end of the longitudinal reinforcement rope 123 to the transverse reinforcement rope 125 and connecting the tip of the longitudinal reinforcement rope 123 to the block 10 or the panel 20, 121).

After step (c), (a) placing the concrete around the stiffener fixing unit 110 so that the lower part of the first flat plate 112 is embedded in the concrete.

The step (a) is performed before or after step (d), and after step (e), concrete is buried around the stiffener fixing unit 110 so that the upper part of the first flat plate 112 is buried. The concrete may be poured only around the reinforcing material fixing unit 110 or continuously inserted along the transverse reinforcing bars 125 to embed the reinforcing material fixing unit 110. [

The block 10 comprises a reinforcing groove 13 and the reinforcing groove 13 is formed laterally through the block 10 or laterally on the upper surface of the block 10. The transverse coupling rods 121 are provided in the reinforcing groove 13 to bind the adjacent blocks 10 together and the distal ends of the longitudinal reinforcing rods 123 are coupled to the transverse coupling rods 121, Respectively.

According to another preferred embodiment of the present invention, a method of constructing a retaining wall comprises the steps of: (a2) installing a stiffener fixing unit 110 at the rear of a block 10 or a panel 20; (b2) installing the transverse reinforcement rods (125) transversely to connect the plurality of stiffener fixing units (110) to each other; And (c2) connecting the rear end of the geogrid 310 to the transverse reinforcement rope 125 and connecting the tip of the geogrid 310 to the block 10.

The method for constructing a retaining wall according to another preferred embodiment of the present invention may further include the steps of: (a2) cutting the slope and forming a perforation hole (40) on the slope; And (b) inserting the reinforcing means 42 into the perforation hole 40 so that the upper end of the reinforcing means 42 protrudes outside the perforation hole 40.

After step (a2), concrete is placed around the stiffener fixing unit 110 so that the lower part of the first flat plate 112 is embedded in the concrete, and the same height as the concrete (10) or the back of the panel (20). (a2 ') is performed before or after step (b2). After step (c2), concrete is placed around the stiffener fixing unit 110 so that the upper part of the first flat plate 112 is buried. The concrete may be poured only around the reinforcing material fixing unit 110 or continuously inserted along the transverse reinforcing bars 125 to embed the reinforcing material fixing unit 110. [

Meanwhile, a method for constructing a retaining wall according to another preferred embodiment of the present invention is characterized in that it has a step of applying a compressive force to a retaining wall by pulling the strand 710.

More specifically, the method for constructing the retaining wall includes the steps of: (a3) installing a geogrid 310 on a bottom surface; (b3) The backfill material f is filled on the geogrid 310 and the front portion of the geogrid 310 is bent to cover the front surface of the backfill material f. At least a part of the top surface of the backfill material f ; (c3) installing the panel (30) at a position spaced apart from the front surface of the backfill material (f) by a predetermined distance, and installing a stiffener fixing unit (110) at the rear end of the backfill material (f) section; (d3) installing a strand 710 connecting the panel 30 and the stiffener fixing unit 110; (e3) filling the space between the front surface of the backfill material (f) and the panel (30) with the aggregate (720) or the cast-in-place concrete; (f3) repeating the steps (b3) and (e3) until the backfill material (f) becomes flush with the top of the panel (30); And (g3) tensioning the stranded wire 710 to cause the panel 30 to apply a compressive force to the aggregate 720 or the poured concrete and the backfill material f.

The method for constructing the retaining wall may further include the steps of: (a4) installing the panel 30 and filling the backfilling material f to a predetermined height; (b4) installing a stiffener fixing unit 110 on the rear side of the panel 30 and connecting adjacent stiffener fixing units 110 to each other by using the transverse reinforcing bars 125; (c4) the front end of the strand 710 is installed through the through hole 32 of the panel 30 and the rear end of the strand 710 is joined to the transverse reinforcement rope 125 or the stiffener fixing unit 110 ; (d4) filling the backfilling material (f) after the step (c4); And (e4) after the step (d4), stretching the leading end of the strand 710 to cause the panel 30 to apply a compressive force to the backfill material f.

The retaining wall construction method according to the present invention has the following effects.

First, it is possible to efficiently install reinforcing materials such as reinforcing bars reinforcing reinforcing earth retaining walls and geogrid on the ground, and shorten the working time.

Secondly, since a stiffener fixing unit that can be used both in the case of using reinforcing bars as a reinforcing material and in the case of using geogrid is used, its application range is wide.

Third, the panel forms the front surface of the retaining wall and prevents the earth leakage, and provides a compressive force to the back filling material. Therefore, the panel also plays an active role in contributing to the structural stability of the retaining wall.

1A and 1B are perspective views showing a stiffener fixing unit used in a method of constructing a retaining wall according to the present invention, respectively.
2 is a plan view showing a layout structure of a block, a stiffener (reinforcing bar) and a stiffener fixing unit in a method of constructing a retaining wall according to a first embodiment of the present invention.
Figure 3a is a perspective view showing the block of Figure 2;
3B is a perspective view showing a modification of the block.
4 is a cross-sectional view showing a retaining wall having the arrangement of FIG. 2;
5 is a plan view showing another arrangement structure of a block, a stiffener (reinforcing bar) and a stiffener fixing unit in the method of constructing a retaining wall according to the first embodiment of the present invention.
6 is a cross-sectional view showing a retaining wall having the arrangement of FIG. 5;
7 is a plan view showing another arrangement structure of a block, a stiffener (reinforcing bar) and a stiffener fixing unit in the method of constructing a retaining wall according to the first embodiment of the present invention.
8 is a plan view showing another arrangement structure of a block, a stiffener (reinforcing bar) and a stiffener fixing unit in the method of constructing a retaining wall according to the first embodiment of the present invention.
FIGS. 9A to 9C are sectional views sequentially showing a process of constructing the retaining wall of FIG. 4. FIG.
Fig. 10 is a sectional view showing a retaining wall according to a second embodiment of the present invention, showing a retaining wall having a block, a stiffener (reinforcing bar) and a stiffener fixing unit having the arrangement structure of Fig. 7;
Fig. 11 is a sectional view showing a retaining wall according to a second embodiment of the present invention, showing a retaining wall having a block, a reinforcement (reinforcing bar), and a stiffener fixing unit having the arrangement of Fig.
12A to 12G are sectional views sequentially showing a process of constructing the retaining wall of FIG. 10;
13 is a plan view showing an arrangement structure of a block, a stiffener (geogrid) and a stiffener fixing unit in a method of constructing a retaining wall according to a third embodiment of the present invention.
14 is a sectional view showing a retaining wall having the arrangement structure of Fig. 13;
15A to 15C are sectional views sequentially showing a process of constructing the retaining wall of Fig.
16 is a sectional view showing a retaining wall constructed according to a fourth embodiment of the present invention;
17A to 17G are sectional views sequentially showing a process of constructing the retaining wall of Fig.
18 is a plan view showing an arrangement structure of a panel, a reinforcing member (reinforcing bar) and a stiffener fixing unit in a retaining wall constructed according to a fifth embodiment of the present invention;
Fig. 19 is a plan view showing another arrangement structure of the panel, the stiffener (reinforcing bar) and the stiffener fixing unit. Fig.
20 is a plan view showing an arrangement structure of a panel, a stiffener (geogrid) and a stiffener fixing unit in a retaining wall constructed according to a sixth embodiment of the present invention;
21 is a sectional view showing a retaining wall constructed according to a seventh embodiment of the present invention;
22A is a view showing a panel used in the retaining wall of FIG. 21; FIG.
22B is a cross-sectional view taken along a line XXII-XXII 'in FIG. 22A;
23 and 24 are views showing a modification of the panel, respectively.
25A to 25E sequentially illustrate the process of constructing the retaining wall of Fig. 21; Fig.
26 to 27 are sectional views showing a retaining wall constructed according to an eighth embodiment of the present invention, respectively.
28 to 29 are sectional views showing a retaining wall constructed according to a ninth embodiment of the present invention, respectively.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely examples of the present invention and are not intended to represent all of the technical ideas of the present invention, so that various equivalents And variations are possible.

In the drawings, the same reference numerals denote like elements.

Stiffener fixing unit

1A is a perspective view showing a stiffener fixing unit used in a method of constructing a retaining wall according to the present invention.

Referring to the drawings, the stiffener fixing unit 110 includes a first flat plate 112 and a second flat plate 116 vertically coupled to the first flat plate 112. The first and second flat plates 112 and 116 may be made of synthetic resin or metal. When the first and second flat plates 112 and 116 are made of metal, they are preferably made of a metal having excellent corrosion resistance and durability such as stainless steel.

The first flat plate 112 is installed in the same direction as the block 10. A first through hole 113 may be formed in the first flat plate 112. As shown in Figs. 2 and 5, the rear end of the longitudinal reinforcing bar 123 is inserted into and engaged with the first through hole 113, or the upper end of the reinforcing means 42 Can be inserted and coupled.

7 and 8, when the rear end of the longitudinal reinforcement 123 is coupled to the transverse reinforcement 125 and there is no reinforcing means 42 for stabilizing the slope, the first through hole 113, May not be necessary.

The first flat plate 112 preferably has a rectangular shape with a height h greater than the width w. This is because it is efficient to install the longitudinal reinforcement 123 or the geogrid 310 in a state where the lower portion of the first flat plate 112 is embedded in the concrete in advance, which will be described below.

The second flat plate 116 is vertically coupled to the first flat plate 112. The second flat plate 116 is preferably disposed above or above the first flat plate 112. When the first flat plate 112 is installed on a slope or concrete, the second flat plate 116 is directed toward the retaining wall. A second through hole 117 is formed in the second flat plate 116.

It is preferable that the second flat plates 116 are formed on both sides of the first flat plate 112 and the second through holes 117 of the both side second flat plates 116 are formed to correspond to each other. This is to allow the transverse reinforcement rods 125 to pass through the second through holes 117 of the second flat plates 116 so that the stiffener fixing units 110 can be connected to each other in the transverse direction.

Fig. 1B shows a modification of the stiffener fixing unit. The stiffener fixing unit 110 differs from the stiffener fixing unit 110 of FIG. 1A in that the first through holes 114 are formed as grooves. That is, the first through hole 114 is different from the first through hole 113 in that the first through hole 114 is formed in a shape recessed downward from the upper end of the first flat plate 112. This first through hole 114 is advantageous because it provides some flexibility in determining the installation height of the longitudinal reinforcement rods 123. That is, since the first through hole 113 is formed as a hole, the height of the first through hole 113 and the tip of the longitudinal reinforcement 123 must be the same. However, since the first through hole 114 is formed as a long groove, It is not necessary to align the tip of the direction reinforcement rods 123 to a specific height.

Hereinafter, a method of constructing a retaining wall using a stiffener fixing unit 110 will be described. The first and second embodiments described below relate to a reinforced earth retaining wall having a front surface made of a block and reinforcing steel as a reinforcing material. In the third and fourth embodiments, the front surface is made of a block and the geogrid And the reinforcing earth retaining wall used. The fifth embodiment relates to a reinforced earth retaining wall having a front surface made of a panel and reinforcing steel as a reinforcing material. In a sixth embodiment, a reinforced earth retaining wall made of panel and having geogrid as a reinforcing material, Lt; / RTI > The seventh embodiment relates to a reinforced earth retaining wall having a front surface made of a panel and using a stranded wire and geogrid as a reinforcing material. In the eighth embodiment, the reinforced earth retaining wall made of reinforcing- Lt; / RTI > The ninth embodiment relates to a reinforced earth retaining wall having a front surface formed of a panel and a stranded wire as a reinforcing material.

In the following description, only the retaining wall using the stiffener fixing unit 110 formed with the first through hole 113 is described as an example, and the retaining wall using the stiffener fixing unit 110 formed with the first through hole 114 is explained It will be omitted. The structure for connecting the rear end of the longitudinal reinforcing bars 123 to the first through holes 113 can be equally applied to the case where the rear end of the longitudinal reinforcing bars 123 is joined to the first through holes 114.

First Embodiment

2 is a plan view showing an arrangement structure of a block, a stiffener (reinforcing bar) and a stiffener fixing unit in a method of constructing a retaining wall according to a first embodiment of the present invention, and FIG. 3A is a perspective view showing the block.

Referring to the drawings, the retaining wall 100 includes a block 10, a transverse binding muscle 121 for laterally binding the block 10, a longitudinally reinforcing bar 123 connected to the block 10, A reinforcing material fixing unit 110 connected to the rear end of the longitudinal direction reinforcement rope 123, a lateral direction reinforcement rope 125 connecting the neighboring reinforcing material fixing unit 110 in the lateral direction, (C). ≪ / RTI >

The block 10 includes a body 11, a penetrating portion 12 penetrating the body 11 up and down, a reinforcing groove 13 formed in the lateral direction on the upper surface of the body 11, And an insertion port (14) formed to penetrate from the rear surface to the penetration portion (12).

The structure of the block 10 may be variously modified to the extent that it can be applied to the present invention. For example, as shown in FIG. 3B, the insertion port 15 may be elongatedly formed from the upper end of the body 11. In this case, since the insertion opening 15 is long, It is easy to join the top.

In order to avoid duplication of the same description, only the retaining wall to which the block 10 having the insertion opening 14 is applied will be described below, and the retaining wall to which the block 10 having the insertion opening 15 is applied will not be described. The method of fixing the tip end of the longitudinal reinforcing bar 123 to the insertion port 14 can be equally used to fix the tip of the direction reinforcing bar 123 to the insertion port 15. [

The transverse coupling rods 121 are inserted into the reinforcing rib grooves 13 to be seated. The transverse coupling rods 121 serve to bind the adjacent blocks 10 in the transverse direction. Although not shown in the drawing, nuts or other fasteners (hereinafter referred to as " fastening means ") may be provided at both ends of the transverse coupling rods 121 to bind the blocks 10 in the transverse direction.

The distal end of the longitudinal reinforcing bar 123 is connected to the fixing means in the through portion 12 after the tip thereof is inserted into the insertion port 14 and the rear end thereof is inserted into the first through hole 113 and then combined with the fixing means And is coupled to the stiffener fixing unit 110.

The transverse reinforcement rods 125 are installed to penetrate through the second through holes 117 to connect the neighboring stiffener fixing units 110 to each other.

The stiffener fixing unit 110 is installed behind the retaining wall, and it is preferable that the stiffener fixing unit 110 is installed so as to be embedded in the on-site concrete c. The concrete c may be poured only around the reinforcing material fixing unit 110. It is preferable that the range where the concrete is poured is sufficient to provide the pulling resistance force. The concrete c may be laid continuously along the transverse reinforcement rods 125 so as not to be poured only around the reinforcing material fixing unit 110 but to embed the stiffener fixing unit 110 therein.

FIG. 5 is a plan view showing another arrangement structure of the block, the stiffener and the stiffener fixing unit, and FIG. 6 is a sectional view showing the retaining wall having the arrangement structure.

This arrangement is different from the arrangement of FIG. 2 in that the tip of the longitudinal reinforcement 123 is coupled to the transverse coupling rods 121. This arrangement makes it unnecessary to make the installation position of the stiffener fixing unit 110 coincide with the insertion opening 14 of the block 10, which facilitates the construction. The coupling of the longitudinal reinforcing rods 123 and the transverse coupling rods 121 may be made by a conventional welding or ring binding device or the like.

2 and 5, the rear end of the longitudinal reinforcement 123 is inserted into the first through-hole 113. However, as shown in FIGS. 7 and 8, Or may be coupled to the transverse reinforcement rods 125. The combination of the longitudinal reinforcing rods 123 and the lateral reinforcing rods 125 may be made by welding or a conventional binding device or the like.

The construction of the retaining wall of Fig. 4 will now be described with reference to Figs. 9a to 9c.

9A, after the stiffener fixing unit 110 is installed, the site concrete c is laid so that the lower portion of the first plate 112 is buried, and the backfill material f is filled up to the concrete height . At this time, it is preferable to connect the reinforcing material fixing units 110 to each other by installing the transverse reinforcing bars 125 to penetrate the second through holes 117 before the concrete is poured. This is because the reinforcing material fixing unit 110 The relative position with respect to the block 10 is not matched.

Subsequently, the block 10 is installed and then the longitudinal reinforcing bars 123 are installed. Specifically, the distal end of the longitudinal reinforcing bar 123 is inserted into the insertion port 14, and the rear end of the longitudinal reinforcing bar 123 is inserted into the first through hole 113.

When the installation of the longitudinal reinforcing bars 123 is completed, as shown in FIG. 9B, the concrete c is poured so as to completely fill the stiffener fixing unit 110. As shown in FIG. On the other hand, the remaining portion except the portion where the concrete (c) is poured is filled with the backfill material (f). The concrete c may be poured only around the stiffener fixing unit 110 or continuously inserted along the transverse reinforcing bars 125 to embed the stiffener fixing unit 110.

After filling the backfilled material, the process of further stacking the blocks and installing the stiffener fixing unit is repeated.

On the other hand, the concrete is placed so that the bottom of the first plate 112 is buried, the backfill material is filled, the longitudinal reinforced concrete reinforcement is installed, and the reinforcing material fixing unit 110 is completely embedded. Filling and backfill filling ', but the above process may be slightly changed.

For example, 'installing a stiffener fixing unit', pouring concrete so that a lower portion of the first plate 112 is buried, filling a backfill material, installing a transverse reinforcement bar, installing a longitudinal reinforcement bar, and installing the reinforcing material fixing unit 110 And filling the back filler '.

On the other hand, the construction method of the retaining wall having the arrangement structure of FIGS. 5 to 7 can be easily understood by referring to the above description, and therefore, a description thereof will be omitted here.

Second Embodiment

Fig. 10 is a sectional view showing a retaining wall according to a second embodiment of the present invention, in which a block, a stiffener (reinforcing bar) and a stiffener fixing unit have a retaining structure having the arrangement of Fig.

The retaining wall 200 is stabilized by the reinforcing means 42 and differs from the retaining wall of the first embodiment in that the upper end of the reinforcing means 42 is coupled to the stiffener fixing unit 110.

The retaining wall 200 includes a block 10, a transverse binding muscle 121 which laterally binds the block 10, a longitudinal reinforcing bar 123 connected to the block 10 and a longitudinal reinforcing bar 123 A reinforcing material fixing unit 110 coupled to the upper end of the reinforcing means 42 and a concrete c placed around the reinforcing material fixing unit 110. The transverse reinforcement rope 125 is connected to the rear end of the reinforcing material fixing unit 110,

The rear end of the longitudinal reinforcing bar 123 is joined to the block 10 by the fixing means after the leading end of the longitudinal reinforcing bar 123 is inserted into the insertion hole 14 and the rear end of the longitudinal reinforcing bar 123 is welded to the transverse reinforcing bar 125, (110).

The transverse reinforcement rods 125 are installed to penetrate through the second through holes 117 to connect the plurality of stiffener fixing units 110 in the transverse direction.

The reinforcing means 42 is provided on the slope to reinforce the slope. As the reinforcing means 42, means known in the art such as an anchor, a rock bolt and the like can be used. The anchor 42 is provided in the perforation hole 40. Although not shown in the drawing, the grouting solution may be injected into the perforation hole 40 to solidify the perimeter of the perforation hole.

The upper end of the reinforcing means 42 protrudes out of the slope, and the protruded portion is inserted into the first through hole 113 and fixed by a fixing means (nut or the like). In accordance with this installation, the first plate 112 is disposed adjacent to the slope or close to the slope. The first plate 112 is positioned parallel to the slope or the retaining wall.

11 is a sectional view showing a retaining wall having a block, a stiffener (reinforcing bar) and a stiffener fixing unit having the arrangement structure of Fig. The retaining wall 200 differs from the retaining wall of FIG. 10 in that the tip of the longitudinally extending reinforcement 123 is coupled to the transverse coupling rods 121.

The process of constructing the retaining wall of Fig. 10 will now be described with reference to Figs. 12a to 12g.

First, as shown in FIG. 12A, an anchor (reinforcing means) 42 is provided in the perforation hole 40 after the slope is cut and the perforation hole 40 is formed. And, although not shown in the drawing, it is also possible to solidify the ground around the perforation hole 40 by injecting the lighting solution into the perforation hole 40.

Then, as shown in FIG. 12B, the upper end of the anchor (reinforcing means) 42 is inserted into the first through hole 113 and fixed with fixing means (nut or the like). A method of fixing the upper end of an anchor with a fixing means (e.g., a nut) is already known.

Next, as shown in FIG. 12C, concrete 10 is laid and concrete c is laid so that the lower portion of the first plate 112 is embedded. At this time, it is preferable that the transverse reinforcement rods 125 are installed before the concrete c is laid, so that the plurality of stiffener fixing units 125 are connected to each other in the transverse direction.

After the concrete is laid, the transverse coupling rods 121 and the longitudinal reinforcing rods 123 are installed. The transverse coupling rods 121 couple the blocks 10 laterally to each other. The rear end of the longitudinal reinforcing rope 123 is fixed to the transverse reinforcing rope 125 by means of welding or the like, Lt; / RTI >

Then, as shown in FIG. 12D, the concrete c is laid so that the stiffener fixing unit 110 is completely embedded.

12E to 12G show that the above process is repeated. Since the concrete c embedded in the stiffener fixing unit 110 is only installed around the stiffener fixing unit 110, the remaining portion is filled with the backfill material f. At this time, as shown in Fig. 12F, it is preferable that the backfill material f is filled to the same height as the concrete c in each step. The concrete c may be continuously laid along the transverse reinforcing bars 125 so as not to be poured only around the reinforcing material fixing unit 110 but to embed the reinforcing material fixing units 110. [

The reinforcing material fixing unit 110 is fixed to the upper end of the reinforcing means 42 → the transverse reinforcing rope 125 is installed → the concrete (c) is poured and the first The block 112 is installed and the transverse coupling roots 121 and the longitudinal reinforcing rods 123 are installed and the concrete c is laid so that the stiffener fixing unit 110 is completely buried. However, the order of construction may be slightly changed.

For example, the slope is cut and a perforation hole 40 is formed. - The stiffener fixing unit 110 is fixed to the upper end of the reinforcing means 42. - The concrete is laid so that the lower portion of the first plate 112 is embedded. → Install the transverse reinforcement rods 125 → Install the blocks and install the transverse coupling rods 121 and the longitudinal reinforcing rods 123 → Put the concrete c in place to completely fill the stiffener fixing unit 110 ' . ≪ / RTI >

The stiffener fixing unit 110 is fixed to the upper end of the reinforcing means 42. The transverse reinforcement rope 125 is installed. The block is installed and the transverse coupling rope 121 and the longitudinal reinforcing bars 123 are installed, and the concrete c is installed to completely fill the stiffener fixing unit 110. In this case,

Meanwhile, the process of constructing the retaining wall of FIG. 11 will be readily apparent to those skilled in the art with reference to the above description, and a description thereof will be omitted.

Third Embodiment

FIG. 13 is a plan view showing an arrangement structure of a block, a stiffener (geogrid) and a stiffener fixing unit in a method of constructing a retaining wall according to a third embodiment of the present invention, and FIG. 14 is a sectional view showing a retaining wall having the above arrangement structure.

Referring to the drawings, the retaining wall 300 includes a block 10, a transverse coupling piece 121 that laterally binds the block 10, a stiffener fixing unit 110, a neighboring stiffener fixing unit A geogrid 310 coupled to the transverse coupling rods 121 and the transverse reinforcing rods 125 and a geogrid 310 coupled to the stiffener fixing unit 110 And concrete (c).

Block 10 has the same structure as block 10 described above. Therefore, the transverse coupling rods 121 are inserted into the reinforcing rib grooves 13 and installed. The transverse coupling rods 121 are engaged with the tip of the geogrid 110. The coupling may be accomplished by fastening the weft of the geogrid 310 along the longitudinal direction of the transverse coupling rods 121 to the transverse coupling rods 121 at predetermined intervals. The fastening may be accomplished by conventional fastening means 312, for example, cable ties, wire, etc., which are commercially available.

The transverse reinforcement rods 125 are installed to penetrate through the second through holes 117 to connect the plurality of stiffener fixing units 110 in the transverse direction. The transverse reinforcement rods 125 are joined to the rear end of the geogrid 310. Meanwhile, in the drawing, a portion left behind at the rear end of the geogrid 310 is shown folded toward the retaining wall.

The coupling may be accomplished by fastening the weft of the geogrid 310 along the longitudinal direction of the transverse reinforcement rods 125 to the transverse reinforcing rods 125 at predetermined intervals.

As described above, since the end of the geogrid 310 is fastened to the transverse coupling roots 121 and the rear end thereof is fastened to the transverse reinforcing rods 125, the state in which the geogrid 310 is pulled up after the completion of the construction can be maintained So that deformation of the retaining wall 300 can be prevented.

The process of constructing the retaining wall of Fig. 14 will now be described with reference to Figs. 15A to 15C.

15A, after the stiffener fixing unit 110 is installed, the site concrete c is laid so that the lower part of the first plate 112 is buried, and the backfill material f is filled up to the concrete height . In this case, it is preferable that the transverse reinforcement rods 125 are installed so as to penetrate the second through holes 117 before the concrete is poured so that the stiffener fixing units 110 are connected to each other in the transverse direction. This is because it is difficult to install the transverse reinforcement rope 125 when the unit 110 moves. The concrete c may be poured only around the stiffener fixing unit 110 or continuously inserted along the transverse reinforcing bars 125 to embed the stiffener fixing unit 110.

The placement height of the concrete c and the filling height of the backfill material f are preferably the same height as the top surface of the block 10 in order to provide the tension of the geogrid 310.

Subsequently, as shown in Fig. 15B, the transverse coupling rods 121 are installed in the reinforcing groove 13 and the geogrid 310 is installed. Concretely, the tip end of the geogrid 310 is fastened to the transverse coupling muscle 121 and the rear end of the geogrid 310 is fastened to the transverse direction reinforcing muscle 125.

When the installation of the geogrid 310 is completed, as shown in FIG. 15C, the concrete c is laid so as to completely fill the stiffener fixing unit 110. On the other hand, the remaining portion except the portion where the concrete (c) is poured is filled with the backfill material (f).

After filling the backfilling material, the above process is repeated.

Fourth Embodiment

16 is a sectional view showing a retaining wall constructed according to a fourth embodiment of the present invention.

The retaining wall 400 differs from the retaining wall of the third embodiment in that the slope is stabilized by the reinforcing means 42 and the upper end of the reinforcing means 42 is coupled to the reinforcing member fixing unit 110.

Referring to the drawing, the retaining wall 400 includes a block 10, a transverse coupling muscle 121 which binds the block 10 in the transverse direction, a reinforcing means 42 provided on the slope, A transverse reinforcing rope 125 connecting the plurality of stiffener fixing units 110 in the transverse direction and a transverse reinforcing rope 121 and a transverse reinforcing rope 125 connected to the upper ends of the transverse reinforcing rods 121, And a concrete (c) placed around the stiffener fixing unit 110. As shown in Fig.

The line and the rear end of the geogrid 310 are fastened to the transverse coupling roots 121 and the transverse reinforcing rods 125 and the fastening method is the same as that described in the third embodiment.

The reinforcing means 42 is provided on the slope to reinforce the slope. As the reinforcing means 42, means known in the art such as an anchor, a rock bolt and the like can be used. The anchor 42 is provided in the perforation hole 40. Although not shown in the drawing, the grouting solution may be injected into the perforation hole 40 to solidify the perimeter of the perforation hole.

The upper end of the reinforcing means 42 protrudes out of the slope, and the protruded portion is inserted into the first through hole 113 and fixed by a fixing means (nut or the like). In accordance with this installation, the first plate 112 is disposed adjacent to the slope or close to the slope. The first plate 112 is positioned parallel to the slope or the retaining wall.

Then, the process of constructing the retaining wall of Fig. 16 will be described with reference to Figs. 17A to 17G.

First, as shown in Fig. 17A, an anchor (reinforcement means) 42 is provided after the slope is cut and the perforation hole 40 is formed. At this time, the upper end of the anchor 42 protrudes outside the perforation hole 40. The grouting solution may be injected into the perforation hole 40 to solidify the perimeter of the perforation hole.

Subsequently, as shown in Fig. 17B, the stiffener fixing unit 110 is installed on the anchor 42 at the lower end of the slope. Specifically, after the stiffener fixing unit 110 is installed in the first through hole 113 to insert the upper end of the anchor 42, the stiffener fixing unit 110 is fixed with a fixing means (nut or the like). By this fixation, the first flat plate 112 is brought into contact with the slope face or located close to the slope face, and is installed in a direction parallel to the retaining wall or slope face. A plurality of stiffener fixing units 110 are laterally connected to each other by installing a transverse reinforcement rope 125 so as to pass through the second through holes 117.

Next, as shown in Fig. 17C, the blocks 10 are stacked and the transverse coupling rods 121 are installed in the block 10. Fig. The concrete c is placed in the vicinity of the stiffener fixing unit 110 so that the lower portion of the first flat plate 112 is embedded in the concrete c or the concrete c is inserted into the lower portion of the second through hole 117, . It is preferable for the concrete pouring to have the same height as the upper surface of the block 10 in order to maintain the pull resistance of the geogrid 310.

When the concrete pouring is completed, the geogrid 310 is installed. The front end of the geogrid 310 is fastened to the transverse coupling rods 121 and the rear end of the geogrid 310 is fastened to the transverse reinforcing rods 125. At this time, if there is a portion remaining at the rear end of the geogrid 310, it may be folded toward the retaining wall about the transverse reinforcement rope 125 to be processed.

Then, as shown in FIG. 17D, the block 10 is further stacked and the concrete is poured so that the stiffener fixing unit 110 is completely buried.

Thereafter, the above process is repeated. However, since the concrete (c) is installed only in the periphery of the stiffener fixing unit 110, the backfill material f is filled in the remaining portion except for the concrete pouring portion. At this time, it is preferable that the backfill material (f) and the concrete (c) have the same height as the upper surface of the block in order to maintain the pull resistance of the geogrid. The concrete c may be continuously installed along the transverse reinforcing bars 125 so as not to be poured only around the reinforcing material fixing unit 110 but to embed the stiffener fixing unit 110 therein.

13, 14 and 16 and the related description show the structure in which the tip of the geogrid 310 is fastened to the transverse coupling roots 121, the tip of the geogrid 310 is connected to the upper and lower layer blocks 121, The tip of the geogrid 310 may be fixed (pin-coupled) by a pin (a pin inserted into the block 10), or a step (not shown) formed in the block 10 (Lug-coupled manner) by means of a stepped jaw.

Examples 5 and 6 (applied to panel)

In the above description, the present invention is applied to a reinforced earth retaining wall made of a block, but the present invention can also be applied to a reinforced earth retaining wall made of a panel.

18 is a plan view showing an arrangement structure of a panel, a stiffener (reinforcing bar) and a stiffener fixing unit in a retaining wall constructed according to a fifth embodiment of the present invention.

The retaining wall having the above-described arrangement structure comprises a panel 20, a transverse coupling piece 121 provided transversely to the rear surface of the panel 20, a longitudinally reinforcing reinforcing piece 123 connected to the transverse coupling piece 121, A reinforcing material fixing unit 110 connected to the rear end of the directional reinforcement 123, a transverse reinforcement rope 125 connecting the plurality of the stiffener fixing units 110 in the transverse direction, Concrete (c, not shown in FIG. 18).

The panel 20 can be made of precast concrete PC, with a ring 22 on its back. The ring 22 is a part that the operator can hold when the panel 20 is moved.

The transverse coupling rods 121 are installed laterally to penetrate the plurality of rings 22. The transverse coupling rods 121 can be coupled to the ring 22, which coupling can be done in a conventional manner, such as by welding.

The distal end of the longitudinal reinforcing bar 123 is connected to the transverse coupling rods 121 by welding or a coupling ring and the rear end of the longitudinal reinforcing rope 123 is inserted into the first through hole 113 and then fixed by a fixing means (nut or the like). The transverse reinforcement rods 125 are installed to penetrate through the second through holes 117 to connect the plurality of stiffener fixing units 110 in the lateral direction.

On the other hand, the tip of the longitudinal reinforcing bar 123 may be directly coupled to the panel 20. For example, when the panel 20 is provided with a through hole (not shown in the figure) and the distal end of the longitudinal reinforcing bar 123 passes through the through hole, .

19 is a plan view showing another arrangement structure of the panel, the stiffener (reinforcing bar) and the stiffener fixing unit.

The above arrangement is different from that of Fig. 18 in that the rear end of the longitudinal reinforcement 123 is coupled to the transverse reinforcement 125. Fig. This arrangement structure is advantageous in that it is not necessary to position the longitudinal reinforcing bars 123 in a straight line with the first through holes 113, thereby facilitating the operation.

In this arrangement, the tip of the reinforcing means 42 may be inserted into the first through hole 113 and fastened. The structure in which the tip of the reinforcing means 42 is fastened to the first through hole 113 has been described above.

The present invention can be applied not only to the case of using reinforcing bars (reinforcing bars) in the panel retaining wall but also in the case of using the geogrid.

20 shows a layout structure of a panel, a stiffener (geogrid), and a stiffener fixing unit in a retaining wall constructed according to the sixth embodiment of the present invention. In Figure 20, the geogrids are marked with red lines to aid understanding.

The retaining wall according to the above arrangement structure includes a panel 20, a transverse coupling piece 121 provided transversely to the rear surface of the panel 20, and a geogrid (not shown) connected to the transverse coupling piece 121 and the transverse- A reinforcing material fixing unit 110 and a transverse reinforcing bar 125 connecting the plurality of stiffener fixing units 110 in the lateral direction and a concrete c 20).

18 in that the transverse coupling roots 121 are provided so as to penetrate the plurality of rings 22 and the transverse reinforcing rods 125 are installed so as to pass through the plurality of stiffener fixing units 110. [

The front end and the rear end of the geogrid 310 are coupled to the transverse coupling rods 121 and the transverse reinforcing rods 125 by fastening means 312. A method in which the line and the rear end are combined with the geogrid 310 has been described above.

As described above, the present invention is applicable not only to the block retaining wall but also to the panel retaining wall. The construction of the panel retaining wall is the same as the construction of the block wall, so that the description thereof will be omitted here.

Seventh Embodiment (Retaining Wall Using Stranded Wire and Panel)

21 is a sectional view showing a retaining wall constructed according to a seventh embodiment of the present invention.

The retaining wall 700 includes a panel 30, a stiffener fixing unit 110 installed at the rear of the panel 30, a strand 710 connecting the panel 30 and the stiffener fixing unit 110, 310, a backfill material (f), and aggregate (720).

The retaining wall 700 differs from the conventional reinforcing earth retaining wall in that the panel 30 applies compressive force to the aggregate 720 or the backfill material f and the cast concrete. That is, in the existing reinforced earth retaining wall, the panel merely plays a role of preventing the earth leakage and forming the front surface of the retaining wall. However, in the retaining wall 700, the panel 30 can prevent aggregation of the aggregate 720 ), Or actively reinforcing by applying a compressive force to the on-site concrete and backfill material (f).

The panel 30 includes a body 31 made of concrete and a through hole 32 passing through the body 31 as shown in Figs. 22A to 22B. A reinforcing bar (not shown) for reinforcing the strength may be embedded in the inside of the body 31. The through hole 32 is a hole through which the leading end of the strand 710 passes, and may have a size such that at least two strands 710 can penetrate.

The panel 30 may have various sizes and shapes. As shown in FIG. 23, two or more through holes 32 may be formed in the panel 30. 24, the panel 30 may be formed in a trapezoidal shape.

The stiffener fixing unit 110 may have the same configuration as the stiffener fixing unit 110 described above. The stiffener fixing unit 110 is installed in the stiffener fixing unit 110 so that the lower end of the first flat plate 112 is positioned at the upper portion and the upper end of the first flat plate 112 is positioned at the lower portion, In this case, it is easy to erect the stiffener fixing unit 110 vertically.

Further, two or more first through holes 113 and 114 may be formed in the first flat plate 112. In this case, two or more stiffeners (not shown) may be provided in one stiffener fixing unit 110 710).

Further, a transverse direction reinforcing bar 125 may be provided in the second through hole 117. The transverse reinforcement rods 125 interconnect the neighboring stiffener fixing units 110 in the transverse direction.

Meanwhile, although not shown in the figure, the on-site concrete c may be installed around the stiffener fixing unit 110. The site concrete (c) serves to prevent the withdrawal of the stiffener fixing unit (110). The in-situ concrete c may be poured only around the stiffener fixing unit 110 or continuously inserted along the transverse reinforcing bars 125 so as to embed the stiffener fixing unit 110 therein.

The stranded wire 710 connects the panel 30 and the stiffener fixing unit 110 to each other. That is, the leading end of the strand 710 is fixed to the panel 30 by means of a tension fixing device (tensioning head) and a supporting plate 34 after passing through the through hole 32, And the rear end is inserted and coupled to the first through holes 113 and 114. On the other hand, the rear end of the strand 710 may not be provided in the first through hole 113 (114) but may be coupled to the transverse reinforcement rope 125, It will be possible. The strand 710 also serves to introduce a compressive force to the retaining wall 700, which will be described later.

가 되도록 설치된다. 물론, 지오그리드(310)가 뒤채움재(f)의 윗면 전체를 덮도록 설치될 수도 있다. The geogrid 310 is installed between the backfilling materials f and serves to reinforce the retaining wall 700. Specifically, the front portion of the geogrid 310 is bent so as to enclose the front surface of the backfill material f, and then covered with a part of the upper surface of the backfill material f, preferably within 1 m from the front surface of the backfill material f. Respectively. Thus, the geogrid 310 has a cross-

Respectively. Of course, the geogrid 310 may be installed so as to cover the entire upper surface of the back filling material f.

The rear end of the geogrid 310 may extend to the rear end of the backfill material f or the stiffener fixing unit 110. [ The rear end of the geogrid 310 may be coupled to the transverse stiffener 125. The combination of the rear end of the geogrid 310 and the transverse stiffener 125 will be described with reference to FIG.

Two or more geogrid 310 may correspond to one panel 30. Although the figure shows the installation of two geogrid 310 in one panel 30, the number of geogrid 310 can be increased as needed.

21, when two pieces of geogrid 310 are installed on one panel 30, the presence of the strand 710 between the upper and lower geogrid 310 and 310 causes the backfill material f ) Is convenient for construction.

The front surface of the back filling material f and the panel 30 are spaced apart from each other by a predetermined distance, and the aggregate 720 or the cast concrete is filled in the spaced spaces. A tensile force is applied to the strand 710 so that the panel 30 applies a compressive force to the aggregate 720 or the backfilled concrete and the backfilling material f after the aggregate 720 or the on- .

When the application of the tensile force is completed, the tension fixing device (tensioning head) provided at the tip of the strand 710 is fixed to the support plate 34, and then the lid 36 is covered and completed.

The construction process of the retaining wall 700 will now be described with reference to FIGS. 25A to 25E.

First, as shown in FIG. 25A, the leveling concrete 701 is installed and the bottom surface is leveled.

형상으로 설치함으로써, 지오그리드(310)의 앞쪽 부분이 뒤채움재(f)의 앞면을 감싸도록 벤딩된 후 뒤채움재(f)의 윗면을 1m 이내로 덮도록 설치된다. Next, as shown in FIG. 25B, the geogrid 310 is installed on the bottom surface and the back filling material f is filled. Specifically, the geogrid 310

So that the front portion of the geogrid 310 is bent to enclose the front surface of the backfill material f and then covers the top surface of the backfill material f within 1 m.

Next, as shown in Fig. 25C, the panel 30 and the stiffener fixing unit 110 are installed, and the panel 30 is connected to the stiffener fixing unit 110 by using the stranded wire 710. Fig. At this time, the panel 30 is spaced apart from the front surface of the backfill material f by a predetermined distance.

Specifically, the rear end of the strand 710 is passed through the first through holes 113 and 114 and then fixed by a grip or the like, and the front end of the strand 710 is inserted into the through hole 32 of the panel 30 So as to penetrate.

형상으로 추가로 설치하고 뒤채움재(f)를 채운다.Then, as shown in Fig. 25D, the space between the front surface of the back filling material f and the panel 30 is filled with the aggregate 720 or the cast concrete. The top surface of the backfill material f is covered with a geogrid 310

And then fill the backfill (f).

Next, as shown in Fig. 25E, the space between the front surface of the back filling material f and the panel 30 is filled with the aggregate 720 or the cast concrete.

After repeating the above process, the front end of the strand 710 is pulled so that the panel 30 applies a compressive force to the aggregate 720 or the backfilled concrete and the backfilling material f. When the tension is completed, the tension fixing device (tensioning head) provided at the tip of the strand 710 is fixed to the support plate 34, and then the cover 36 is covered and completed.

Eighth Embodiment (Retaining Wall Using Coast Guard)

26 is a sectional view showing a retaining wall constructed according to an eighth embodiment of the present invention.

The retaining wall 800 includes a panel 20 made of a glazed stone, a stiffener fixing unit 110 installed at the rear of the panel 20, a longitudinal reinforcing bar 123 connecting the panel 20 and the stiffener fixing unit 110 A transverse reinforcement rope 125 for interconnecting the stiffener fixing units 110 in the transverse direction, and a backfill material f. Among the above components, the stiffener fixing unit 110, the longitudinal direction reinforcing bars 123, the lateral direction reinforcing bars 125, and the backfill member f are similar to the stiffener fixing unit 110 of the above- 123, the transverse reinforcement rods 125, and the backfill material f, respectively.

The panel 20 is made of a gravel stone, and can be joined to the tip of the longitudinal reinforcing bar 123 by a spring anchor or the like. Specifically, a perforation hole having a predetermined depth is formed on the back surface of the gravel stone 20, a filling material (serving as an adhesive) is filled in the perforation hole, and the tip of the longitudinal reinforcing bar 123 is inserted into the perforation hole, And the front end of the reinforcement rods 123 is engaged with the landscape stone 20. On the other hand, this coupling method is also called a fountain anchor in the field.

Although not shown in the figure, the concrete concrete (c) may be installed around the stiffener fixing unit 110. The in-situ concrete c may be laid only around the stiffener fixing unit 110 or continuously laid along the lateral stiffener 125 to embed the stiffener fixing unit 110.

The rear end of the longitudinal reinforcing bars 123 may be inserted into the first through holes 113 and 114 of the stiffener fixing unit 110 and may be coupled to the transverse reinforcing bars 125.

27 shows that the reinforcing means 42 is provided on the oblique surface and the upper end of the reinforcing means 42 is inserted into the first through holes 113 and 114 and joined thereto.

Ninth Embodiment (Retaining Wall Using Panel)

28 is a sectional view showing a retaining wall constructed according to a ninth embodiment of the present invention.

Like the retaining wall 700, the retaining wall 900 serves as an active reinforcement function for applying a compressive force to the back filling material f as well as preventing dust leakage and forming a front wall of the retaining wall Also.

The retaining wall 900 includes a panel 30, a stiffener fixing unit 110 installed at the rear of the panel 30, a strand 710 connecting the panel 30 and the stiffener fixing unit 110, A transverse reinforcement rope 125 that interconnects the units 110 in the transverse direction, and a backfill material f.

The leading end of the strand 710 is fixed to the panel 30 after being installed to penetrate the through hole 32 of the panel 30. [ The rear end of the strand 710 is inserted into the first through holes 113 and 114 and joined to the transverse reinforcement rods 125 by welding or the like. The method in which the line and the rear end of the strand 710 are respectively fixed to the panel 30 and the stiffener fixing unit 110 has already been described in the seventh embodiment.

After completion of the backfill material (f), the front end of the strand 710 is pulled so that the panel 30 applies compressive force to the backfill material f.

형상으로 설치됨으로써, 지오그리드(310)의 앞쪽 부분이 뒤채움재(f)의 앞면을 감싸도록 벤딩된 후 뒤채움재(f)의 윗면을 1m 이내로 덮도록 설치될 수 있다. Although not shown in FIG. 28, the retaining wall 900 may also be provided with the geogrid 310 as shown in FIG. That is, the geogrid 310

So that the front portion of the geogrid 310 can be bent so as to enclose the front surface of the backfill material f and then cover the top surface of the backfill material f within 1 m.

The in-situ concrete c may be installed only in the periphery of the stiffener fixing unit 110 or in the lateral direction of the stiffener fixing unit 110 so as to be embedded in the stiffener fixing unit 110. [ And can be continuously pushed along the reinforcing rods 125.

29 is a cross-sectional view showing that a road is extended by installing a retaining wall after cutting slopes in the existing road side direction. And, the original slope was shown by a dotted line. The retaining wall 900, like the retaining wall in Fig. 28, performs active reinforcement in which the panel 30 applies compressive force to the backfill material f.

In addition, the in-situ concrete c may be poured only around the stiffener fixing unit 110 or continuously inserted along the transverse reinforcing bars 125 to embed the stiffener fixing unit 110.

10: Block 12:
13: reinforcing groove 14, 15: insertion hole
20, 30: panel 22: ring
32: through hole of panel 34:
36: Cover
40: perforation hole 42: reinforcing means
100, 200, 300, 400, 700, 800, 900:
110: stiffener fixing unit 112: first plate
113, 114: first through hole 116: second edition
117: second through hole 121: transverse coupling
123: longitudinal reinforcement 125: transverse reinforcement
310: geogrid 312: fastening means
701: Leveling concrete
710: Stranded wire 720: Aggregate or spotted concrete
w: width of the first plate h: height of the first plate
c: Cast-in-place concrete f: Backfill

Claims (1)

(a1) installing a stiffener fixing unit (110) behind the block (10) or the panel (20);
(b1) installing the transverse reinforcement rods (125) in the lateral direction so as to connect the plurality of stiffener fixing units (110) to each other; And
(c1) connecting the rear end of the longitudinal reinforcement rope 123 to the stiffener fixing unit 110 and connecting the tip of the longitudinal reinforcement rope 120 to the block 10 or panel 20, 20 to a laterally extending transverse binding muscle 121,
The stiffener fixing unit 110 includes a first flat plate 112 and a second flat plate 116,
The first flat plate 112 is installed in the same direction as the block 10 or the panel 20 and the first through holes 113 and 114 are formed in the first flat plate 112. The first through holes 113, The rear end of the longitudinal reinforcing bar 123 is inserted and joined to the rear end portion 114,
The second flat plate 116 is vertically coupled to the first flat plate 112. The second flat plate 116 is provided with a second through hole 117 and the second through hole 117 is provided with a transverse reinforcing bar 125 Wherein the reinforcing member fixing unit is installed through the reinforcing member fixing unit.

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