KR100744043B1 - Reinforced Soil Retaining Wall Prestressed To The Horizontal Direction And The Construction Method Using The Same - Google Patents

Abstract

The present invention relates to a reinforcement earth retaining wall and a method of installing the reinforcement soil retaining wall, which is capable of greening the reinforcement soil retaining wall into a rock and soil back ground by using a horizontal tension member. And a support block, and the reinforcement soil block is installed on the rearing soil by being settled after tension of the horizontal tension member in the through-hole, and a germination ball including germination plants is installed between the support blocks.

Gusset retaining wall, geogrid, prestress, greening

Description

Reinforced Soil Retaining Wall Prestressed To The Horizontal Direction And The Construction Method Using The Same}

Figure 1a is a cross-sectional view of the conventional reinforced earth retaining wall installation,

Figure 1b shows a conventional reinforced earth block,

1C and 1D illustrate rigid and ductile geogrids, which are conventional horizontal stiffeners.

Figure 2a is an assembly view of the reinforcement soil block including the germinated body portion and the vertical reinforcement of the present invention,

Figure 2b is a perspective view of the installation of the reinforced earth retaining wall of the present invention.

3a, 3b, 3c and 3d are embodiments of the horizontal connecting member of the present invention.

Figure 4a and 4b is a sectional view of the reinforcement earth retaining wall installation of the present invention,

4C and 4D are cross-sectional views of inclined reinforced soil retaining wall installations of the present invention.

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

100: reinforcement soil block 110: lower horizontal block

120: support block 130: fittings

200: horizontal tension member 300: germinated body portion

310: vegetation soil 320: Germinated plant

400: vertical reinforcement 500: backfill

600: horizontal reinforcement 700: foundation

800: dead cap

The present invention relates to a vegetation-reinforced soil retaining wall in which prestress is introduced in a horizontal direction. More specifically, geogrid, which is a horizontal reinforcement material having a large tensile force, is installed on the rearing soil to increase the tensile force by using frictional force with the rearing soil of the geogrid, thereby achieving self-stable stability of the reinforcement soil, and installing a reinforcement block on the free surface. Reinforced soil retaining wall to achieve this small free surface soil stability.

FIG. 1A illustrates the installation state of a conventional reinforced soil retaining wall in cross-sectional view.

The conventional reinforcement soil retaining wall 10 is largely connected to the reinforcement soil retaining wall block 11 and one side end of the block 11, the other side end is extended to the rear of the soil (20) geogrid is installed horizontally ( 12a, 12b, Geogrid) is a method of reinforcing the slope while stacking the retaining wall block (11) to the final height while compacting the backing soil on which the geogrid 12 is installed for each floor.

FIG. 1B shows an example of the block 11, FIG. 1C shows an example of a rigid geogrid 12a, and FIG. 1D shows an example of a soft geogrid 12b.

The retaining wall block 11 is usually manufactured by being molded into a mortar (or concrete) product, and a shear key 11a is formed to be stacked up and down through mechanical engagement, and various connections including a geogrid connected to the rearing soil and the like. It is common that the horizontal groove (11b) and the vertical groove (11c) is formed to be connected by the installation.

The rigid geogrid (12a) is made by connecting the planar form to each other by a connecting plate by a method of forcibly stretching high-density polyethylene (HDPE), the flexible geogrid (12b) is a lattice form by coating a high-strength polyester PVC on the fabric Molded with is mainly used. Such geogrids may also be referred to as fiber reinforcements.

The geogrid is integrally installed with the block by a connector such as a connecting rod such as one side portion across the horizontal groove (11b) or vertical groove (11c) of the block 11, or connecting rods, and is installed to extend to the rear of the rear soil.

However, such a conventional reinforcement soil retaining wall 10 is condensed as the ground soil 20 compacted over time after being built, and inevitably occurs when the ground soil is settled, the problem is the retaining wall block by this phenomenon Since geogrids 12a and 12b connected to (11) are laid to the rear of the rearing soil, the geogrids 12a and 12b also sink together with the rearing soil.

The geogrids 12a and 12b settle together with the backing soil, and the retaining wall blocks 11 connected to the backing soil 20 are directed toward the backing soil 20 so that the installation form of the retaining wall blocks 11 is deformed locally or excessively deformed. It is pointed out that this may be difficult to secure usability, cracks may occur in the block, and the geogrid and the block may be disconnected from each other, which may cause a problem of failing to function as a retaining wall.

In addition, various methods for slope greening have been introduced. Especially, it can be applied to the retaining wall of reinforcement soil, but it can be installed more easily, and the necessity of technology development that can freely install various conventional vegetation materials as necessary is gradually increased. It was a situation.

An object of the present invention is to provide a reinforcing soil retaining wall that can prevent the occurrence of defects of the reinforcing soil retaining wall due to the settlement of the backing soil in the installation of the reinforcing soil retaining wall.

Another object of the present invention is to provide a reinforcement earth retaining wall that is easy to greening the front portion.

Another object of the present invention is to reinforce rock bolts or earth anchors on cut slopes that are rock formations, to ensure rock stability, rockfall prevention and rust regeneration at the same time, as well as bottom-up in construction methods. It is to provide a reinforcement earth retaining wall installation method that can install the reinforcement earth retaining wall from the top of the cut and at the same time or the protection of the existing rock slope.

The present invention to achieve the above technical problem,

Consists of a pair of tetrahedral-shaped support block 120 is formed spaced apart from each other in the middle of the lower horizontal block 110 of the tetrahedral shape, the lower horizontal block 110 and the support block 120 Through holes 111 and 121 are formed from the front surface to the rear surface thereof, and are installed by being vertically and horizontally disposed on the cut slope, and the reinforcement soil block 100 capable of manufacturing the lower horizontal block 110 and the support block 120 integrally. ;

It is connected to one surface of the horizontal reinforcement 600 including a stretchable geogrid extending to the rear of the soil (A), the other end is inserted into the through holes (111, 121) and is tensioned from the front of the reinforcement block 100 A horizontal tension member 200 fixed to the fixing unit 220 inserted into the through hole after tensioning the horizontal reinforcing material 600; And

The filling soil 310 containing the germination plant 320 is installed on both sides of the mounting portion 130 including a groove or an insert extending vertically between the lower horizontal block 110 and each support block 120 adjacent to each other so as to be detachable. ) Is filled inside, and the germination body portion 300 of the upper and lower pockets;

Hereinafter, the vegetation-reinforced soil retaining wall in which prestress is introduced to the free-reinforced soil free surface in the horizontal direction according to the present invention and the method of constructing the reinforced soil retaining wall using the same will be described in detail with reference to the embodiment shown in the drawings. Means the front part of the reinforcement soil block constituting the finished reinforcement soil retaining wall.

Figure 2a illustrates a reinforcement earth block 100 is installed vertical reinforcement 400 and the germination body portion 300 of the present invention,

2b is a view showing a state in which the reinforcing soil retaining wall is horizontally stacked in a state where the horizontal reinforcing material 600, the horizontal tension member 200 and the germinating body part 300 of the present invention are installed,

3A, 3B, 3C and 3D illustrate specific examples of the horizontal tension member 200 installed in the reinforcement earth block 100 of the present invention.

Reinforcement soil retaining wall of the present invention is composed of a large reinforcement soil block 100, horizontal tension member 200 and the germination body 300, as shown in Figures 2a and 2b.

In the case of the reinforcement soil block 100, as shown in Figure 2a is formed in a pair spaced apart from each other in the middle of the lower horizontal block 110 and the lower horizontal block 110 extending in the horizontal direction in the form of a tetrahedron, lower horizontal block (110) The support block 120 protrudes to the upper side and also protrudes to the rear side is formed so that the overall cross-sectional shape is made in the form of "ㅛ", it is generally formed into a concrete product, but the material is not necessarily limited thereto. Do not.

In the case of the lower horizontal block 110, both sides are rounded, and this is to prevent the reinforcement soil block from interfering with each other when the reinforcement soil block is installed at the corner portion.

The lower horizontal block 110 is formed with a through-hole 111 penetrating the rear surface from the front, the through-hole 111 is a horizontal tension member 200 is settled after tensioning the horizontal reinforcing material 600 as described below ) Also serves as a kind of support for settlement.

Since the horizontal tension member 200 may be manufactured in the form of a rod as described below, the through-hole 111 is also preferably formed as a hole of a circular cross section, but through a square according to the cross-sectional shape of the horizontal tension member. It may be formed as a hole or the like.

The number of the through holes 111 installed in the lower horizontal block 110 may be installed in the number of installation of the horizontal tension member 200 to be installed, etc., through holes 111 according to the installation position of the horizontal tension member. Through-holes that are not installed, the horizontal tension member 200 is not installed, the scaffold for the installation of the maintenance work scaffold, etc. can be inserted to facilitate future maintenance.

A pair of support blocks 120 are formed in the middle of the lower horizontal block 110, the support block 120 of the present invention is a function of supporting the lower horizontal block 110 disposed on the top and the germination body to be described later 300 to be inserted and installed, and the same through hole 121 is formed together with the through hole 111 formed in the lower horizontal block 110.

Thus, the reinforcing soil block of the present invention is a form in which a plurality of through holes (111.121) according to the position (lower horizontal block or support block) is formed, but all of the through holes for the installation of the horizontal tension member 200 and the scaffolding installation. In terms of having a function, both of them have a common function.

The support block 120 is manufactured to be integrally formed with the lower horizontal block 110, to protrude upward and a predetermined height and width from the upper surface of the lower horizontal block 110, the horizontal lower block 110 It is formed to extend from the lower surface of the projecting rear.

Inner and outer sides of the support block 120 is formed with a mounting portion 130 is formed by a vertical groove or insert that can be installed to the germination body 300 to be described later, as shown in Figure 2a, extending downward in Figure 2a Grooves are shown.

This mounting portion 130 is to be formed in the inner, outer side close to the horizontal support block 110 so that the germination body portion 300 can be continuously installed horizontally between the support block 120 as shown in Figure 2b.

In the case of the extended groove, as shown in Figure 2a, in the form of a semi-circular groove can be formed on the side over the entire height of the support block 120 for the convenience of production, the horizontal support block from the upper surface of the support block 120 ( It is possible to adjust the installation position and height of the germination body portion 300 to be described later by installing only the height of the top surface of 110.

In the case of the insert, as shown in Figure 2c, as a kind of vertical through-hole can be formed as a bolt groove or an insert groove inserted into the insert perpendicular to the side of the support block, the height of the support block 120 Can be installed multiple apart.

The bolt groove or the insert groove may be installed in an appropriate number so that the germination body 300 may be fixed between the support blocks 120 according to the height of the support block 120. The mounting portion 130 is mounted to the germination body portion 300 of the present invention.

2A and 2C, the germination body portion 300, at least the upper and lower surfaces are to be produced in the form of an open pocket, as will be described later when the vegetation soil 310 is filled inside, the cross-sectional shape is finally square or hexagon It may be formed such as, the height is installed between the support block 120, so as to manufacture the height of the support block, the width is adjusted to be installed between the support block.

As a result, as shown in FIG. 2A, both side end portions of the germinated body part 300 may be inserted from above into an extended semicircular groove formed in the support block 120 to be detachably installed between the support blocks 120. Will be.

When the bolt groove or the insert groove is installed as the mounting portion 130 as shown in Figure 2c is inserted into the bolt groove or the insert groove from the inside of the germination body portion 300 using a mounting hole including a bolt to mount the germination body portion 300 It is to be fixed to the support block 120.

As seen from the name, the germinated body portion 300 may be such that the germination plants and the vegetation soil for the germination plants, including the various vegetation materials in the inner space.

Germinated plant 320 includes a variety of seeds and the like that can grow in a kind of vegetation soil 310, vegetation soil 310 may be configured to include a soil containing a variety of nutrients depending on the germination plant.

As a result, after the reinforcement earth retaining wall is installed by the germination body part 300, the natural vegetation material according to the germination plant grows on the reinforcement earth retaining wall of the present invention, and the natural vegetation material is exposed to the outside by the front of the reinforcement earth retaining wall between the support blocks 120. It has the advantage of being able to secure an eco-friendly aesthetic.

Since the germination body part 300 occupies an open space between the support blocks 120, a case in which the germinating body part 300 may flow out from the rear surface of the support block 120 by the earth pressure may occur, which may be a problem in durability. There is.

Therefore, the germination body part 300 needs to be made of a material that can have sufficient durability by having a shear resistance ability that is not pushed together by the backfill material 500 filled on the vegetation soil and the germination body due to earth pressure. Will be.

As a result, in the present invention, it may be made of a plastic material or steel material to be woven in a lattice form. Preferably, the present invention is preferably made of a geogrid material for a reinforced soil retaining wall.

The backfill material 500 for drainage including rubble (drainage membrane) is further filled between the rear surface of the germinated body part and the front surface of the rearing soil as shown in FIG. 2B, which is intended to drain the flowing water and the like introduced into the support block. will be.

The rear surface of the back fill material 500 is in contact with the front of the cut slope, in the present invention is to install a vertical reinforcement 400 between the back fill material 500 and the front of the cut slope.

The vertical reinforcement 400 is to support the earth pressure from the cut slope to absorb a substantial portion of the earth pressure delivered to the reinforcement soil block 100, this vertical reinforcement 400 also uses a geogrid, which is also described later horizontal reinforcement It becomes possible. As a result, the back reinforcing material 500 and the germination body 300 due to the vertical reinforcing material can be prevented from being damaged by the earth pressure or outflow to the front.

In the conventional reinforcement soil retaining wall is taken as a method of simply connecting the horizontal reinforcement (12) installed extending to the rear soil back as shown in Figure 1a to the reinforcement soil block, such a phenomenon that the soil is consolidated and settled over time This will occur.

In order to prevent this phenomenon, the present invention installs the horizontal reinforcement 600, the horizontal reinforcement 600 is tensioned by using the horizontal tension member 200 between the horizontal reinforcement and the reinforcement earth block through the reinforcement earth block 100 precisely By being fixed in the holes 111 and 121, a kind of compressed prestress is introduced in the horizontal direction so that the reinforcement soil block 100 can be compressed and installed in the rear soil A.

3A, 3B, 3C, and 3D illustrate examples of the connection and fixation of the horizontal tension member 200 according to the type of the horizontal reinforcement 600.

First, the horizontal reinforcement 600 may use a fiber reinforcement that is rigid or soft geogrid as in the prior art, and as described below, an earth anchor or lock used when a panel-like reinforcement or cut slope is a rock or plate-shaped fiber or steel. It may be a bolted steel reinforcement.

3A illustrates a horizontal tension member 200a that may be used when the panel type horizontal reinforcement 610 is used as the horizontal reinforcement 600.

The horizontal tension member 200a is usually made of steel, and is manufactured in the form of a rod, but the triangular support portion 210a is formed at the right end so that the panel type horizontal reinforcement 610 can be fitted to the left end. Manufactured to form a thread on the outer circumferential surface. The left end is inserted into the through holes 111 and 121 formed in the reinforcement earth block 100.

The left end inserted into the through hole is fastened to the fixing nut 220a inserted into the through hole after tension using a hydraulic jack not shown, and the fixing nut 230a is fixed again to maintain the tension force. At least one is fastened to the left end so as to contact the 220, so that the compressive prestress due to the tension force is introduced into the reinforcement soil block 100 and the rearing soil.

3B illustrates a horizontal tension member 200b that may be used when a conventional rigid or soft geogrid is used as the horizontal reinforcement 600.

The horizontal tension member 200b may use an unbonded strand as a tendon for bridges, in which horizontal reinforcement members are manufactured in a lattice shape so that horizontal tension members 200b are alternately interposed between grids. This is because it is easy to be installed to be wound in a U-shape.

Both ends of the horizontal tension member are also inserted into the through holes 111 and 121 formed in the reinforcement earth block.

Both ends inserted into the through hole are fastened to the fixing wedge cone 210b inserted into the through hole after the tension using a hydraulic jack or the like, and the fixing wedge 220b is wedge again to maintain the tension force. By being inserted into the left end to be inserted into the fixing cone, the compression prestress due to the tension force is introduced into the reinforcement soil block and the rear soil.

In the case of Figure 3c, it shows a horizontal tension member 200c that can be used when using the rock bolt 210c of the rock bolt or earth anchor as a horizontal reinforcing material 600.

When the horizontal tension member 200c is cut rock, it is impossible to install the panel-type or geogrids 610 and 620 which are horizontal reinforcement materials as shown in FIGS. 3A and 3B. Therefore, after drilling the insertion hole (punch hole) on the female slope as shown in Figure 4b, the rock bolt is inserted into the drilling hole and grouting the internal space of the insertion hole, whereby the rock bolt end is formed to protrude from the female slope.

The protruding rock bolt ends are also inserted into the through holes 111 and 121 formed in the reinforcement earth block. Since the rock bolt is normally installed on the rock slope inclinedly, in this case, the reinforcement earth block of the present invention may also be stacked to be slightly inclined so that the lock bolt may be inserted into the through hole of the reinforcement soil block.

The end inserted into the through hole is also fastened to the fixing plate 220c inserted into the through hole after the tension using a hydraulic jack or the like, and the fixing nut 230c and the fixing nut 240c are maintained to maintain the tension force. It is inserted into contact with the fixing plate 210c again, so that compression prestress due to tension is introduced into the reinforcement soil block and the rearing soil.

In the case of Figure 3d, it shows a horizontal tension member (200d) that can be used in the case of using a panel-shaped reinforcement (210d) that is a steel reinforcement as a horizontal reinforcement (600). It can be seen that the same form as the panel-type reinforcement used in the horizontal reinforcement as shown in Figure 3a.

End portions of the panel type reinforcement 210d are also inserted into the through holes 111 and 121 formed in the reinforcement earth block. In the case of the panel type reinforcement having an end portion of the rectangular cross section, the through-hole is formed in a rectangular cross-sectional shape correspondingly.

The end inserted into the through hole is also fastened to the square fixing wedge cone 220d inserted into the through hole after the tension using a hydraulic jack or the like, and the square fixing wedge 230d is squarely fixed to maintain the tension force. The wedgecon is inserted into contact with the wedgecon, so that compressive prestress caused by tension is introduced into the reinforcement block and the backing soil.

At this time, the case of using the fixing, fixing nut and the fixing plate as shown in Fig. 3a and 3c is called a screwing type in the present invention,

In the present invention, when the fixing wedge cone and the fixing wedge are used as shown in FIGS. 3b and 3d, the wedge fastening type is used.

Hereinafter, a method of installing a vegetation-reinforced soil retaining wall in which prestress is introduced to the free surface of the reinforced soil in the horizontal direction of the present invention will be described.

First, the case where the backing soil to which the reinforcing soil retaining wall is installed is the soil (Example 1) and the rock case (Example 2) will be described.

<Example 1>

Figure 4a shows an example in which the reinforced earth retaining wall of the first embodiment is installed.

If the soil is soil, the original ground is cut according to the construction plan line, thereby forming the cut slope B.

By stopping the ground adjacent to the cut portion slope (B) is to finish the ground of the site where the reinforcement soil retaining wall of the present invention is to be installed. Normally, after breaking up the ground, ground stopping work is carried out, such as crushing rubble in the broken ground.

Next, lean concrete (abandoned concrete 720) is placed on the crushed rubble, cured, and a mortar 710 for leveling is formed.

When the installation of the foundation 700 is completed, the first block 100a is installed on the foundation 700 using the reinforcement soil block of the present invention. In this case, as shown in Figure 2b to install the germinated body portion 300 in the reinforcement soil block, and after filling the back filler 500 including rubble in the germinated body portion 300, the vertical reinforcement 400 is installed, first In accordance with the stage is laid soil (A1).

Next, the horizontal reinforcement (600a) is disposed on the laid back surface, and various other horizontal tension members (200) according to the horizontal reinforcement (steel reinforcement or horizontal reinforcement, etc.) are connected and installed. At this time, the rear end of the horizontal reinforcing material (600a) can be installed in the conventional not shown fixture to be fixed to the laid back soil (A1), this is to ensure that the rear end is fixed when the horizontal reinforcing material tension.

In addition, one end of the horizontal tension member 200 is inserted into the through holes 111 and 121 of the reinforcement earth block.

Next, the second reinforcement soil block 100b is piled up on the first block 100a while the backfill is formed for back soil formation, and the back ground soil is compacted.

At this time, by tensioning the horizontal tension member 200 is fixed to the reinforcement soil block (100a) so that the compression prestress is introduced into the reinforcement soil block (100a) and the rear soil (A1).

If this work process is called basic work 1, by repeating basic work 1 to the final retaining wall installation height, the reinforcement soil blocks (100b, 100c, 100d, 100e), vertical reinforcement (400b, 400c, 400d, 400e) and finally Horizontal reinforcement (600b, 600c, 600d, 600e) may be stacked and installed with the compaction of the backing soil (A2, A3, A4, A5).

Next, by installing a top cap finishing cap 800 on the upper surface of the reinforced earth block piled up to the final height to complete the retaining wall installation. The finishing cap 800 is usually able to produce a variety of shapes according to the shape of the upper surface of the precast concrete product reinforcement block.

As a result, the natural vegetation material according to the germination plant 320 contained in the vegetation soil filled in the germinated body part 300 is grown on the front portion of the retaining wall retaining wall of the present invention, which is environmentally friendly. Can be expressed,

Even when the backing soil of the reinforcement soil retaining wall is consolidated, the reinforcement soil block is compressed to the backing soil by compression prestress, thereby preventing the accompanying deformation or settlement of the reinforcement soil block due to the consolidation settlement.

In addition, the horizontal reinforcing material 600 is to support the vertical, horizontal earth pressure acting on the backing soil, the vertical reinforcing material 400 serves to mitigate the horizontal earth pressure transmitted from the backing soil, the backfill material and the germinated body part by the earth pressure It is possible to prevent the phenomenon that flows forward.

In addition, the reinforcing soil block of the present invention is left through hole through which the horizontal tension member is not installed, it is possible to install a steel pipe for the scaffold in such a through hole, so that the retaining wall retaining wall management, scaffolding, etc. Maintaining the retaining wall retaining wall is also very easy, such as to be suspended from the installation.

The reinforcement soil retaining wall may be installed vertically according to the inclination of the rearing soil, may be installed inclined rearward along the inclined surface, reinforcement soil is further formed in the upper and lower ends of the support block of the reinforcement soil block for mechanical coupling of the up and down reinforcement soil block Blocks can also be used.

4C and 4D show that the reinforcement soil block 100 in which the germinated body part 300 is installed can be inclined in particular.

That is, in the case of Figure 4c by showing that the reinforcement toe block 100 is made slightly inclined to the left and right, it can be seen that the slope of the entire retaining wall can be adjusted,

In the case of FIG. 4D, the inclination of the entire retaining wall can be adjusted by stacking the reinforcement soil block 100 toward the rearing soil.

At this time, of course, the reinforcement soil block 100 is a case in which the soil is earthen soil is shown in Figures 4a and 4b, but in the case of the rearing soil is a rock as in Example 2 below it can adjust the retaining wall slope in the same manner as above.

<Example 2>

Reinforcement earth retaining wall installation work according to the second embodiment is as shown in Figure 4b,

In installing the reinforcement soil retaining wall in the original ground which is rock,

Cutting down the first ground which is a rock from the top of the original ground to install the reinforcement soil block (s1);

Inserting and installing a horizontal tension member (900a) including an anchor anchor or a lock bolt from the lower end of the first cut slope to the first cut slope (s2);

Installing a vertical stiffener (400a) including a geogrid on the first cut slope (s3);

Comprising a pair of support blocks 120 formed in the middle of the tetrahedral lower horizontal block 110 spaced apart from each other and protruded in the upward and rear direction, the through-hole is formed from the front surface to the rear surface of the lower horizontal block, Both sides of the mounting unit 130 including a groove or an insert extending up and down between the lower horizontal block and each supporting block are installed to be detachable, and the vegetation soil 310 containing the germinating plant 320 is filled inward. Installing a reinforcing soil block (100a) comprising a germination body portion 300 of the top and bottom open bag shape, the projecting end of the horizontal tension member (900a) to be inserted into the through hole of the reinforcement soil block (s4);

After the tension of the horizontal tension member (900a), the step of fixing the reinforcement toe block 100a (s5); repeating the reinforcement earth block installation process including a reinforcement soil retaining wall is installed in a top-down manner.

This method completes all the conventional cut slopes and installs the reinforcement block from the top of the cut slope from the top of the cut slope as compared to the top-down reinforcement retaining wall construction method in the sense that the reinforcement block installation work starts from the bottom of the cut slope and is completed at the top of the cut slope. In contrast to the method, the reason for taking this method is that the prior work to cut the cut slope and stop the surrounding ground must be completed in the conventional method, which may interfere with the surrounding traffic, which may cause air delay and construction cost increase or decrease. This is because there is a problem that can be.

In the case where the original ground is a rock, if the reinforcement soil block can be installed together with the cutting work for the slope, there is an advantage that the preceding work can be omitted.

Thus, the method of installing the reinforcement soil block of the present invention on the original ground which is the rock can be referred to as the method of installing the reinforcement soil retaining wall according to the second embodiment, and since the ground is the rock, the earth anchor or rock bolt is used as the horizontal reinforcement 900a. Done. As a result, the wedge fixing cone and the fixing wedge are used as the horizontal tension member 900a as shown in FIG. 3C.

Specifically, as in the step s1, first, secure a work space to install 2-3 reinforcement soil retaining walls from the upper surface according to the cut construction plan of the original ground from the upper surface, but additionally install the reinforced soil retaining wall downward. In order to position the mechanical means including the backhoe to perform the cutting operation for cutting the overall space to install 4-6 stages (downward cutting the first cut slope).

The horizontal reinforcing material (900a) to form a punching hole to install the earth anchor or rock bolt on the cut slope, and after inserting the horizontal reinforcing material is inserted into the drilling hole, the grouting material is filled in the drilling hole to finish. (s2 step)

Next, install the vertical reinforcement (900a) on the cut slope (s3 step),

Reinforcing soil retaining wall 100 of the present invention is installed from the bottom to the top by one step (s4 step). In this case, the reinforcing earth block 100 is installed by adjusting the position of the reinforcing earth block so as to correspond to a position where the protruding end of the horizontal reinforcement 900a can be inserted into the through hole of the reinforcing earth block 100.

At this time, the germinated body portion 300 is installed on the reinforcement soil block as in the first embodiment.

In the case of Example 2, since the soil is not earth and sand, the compaction work of the soil is not required as in Example 1.

Next, the horizontal reinforcement material (900a, earth anchor or rock bolt) is inserted into the through-hole of the reinforcement earth block, and then is fixed after the tension from the front surface of the reinforcement earth block (using a fixing plate, a fixing nut and a fixing nut) to finally install the reinforcement earth block. To complete (s5).

Thus, when the installation of the reinforcement soil block of one cycle is completed, the reinforcement soil block (100b, 100c, 100d, 100e), the vertical reinforcement (400b, 400c, 400d, 400e) and the horizontal bolts of the rock bolt while continuing to form the cut slope further down (900b, 900c, 900d, 900e) is to be installed, and when reaching the bottom of the cut slope is to install the base portion 700 as in the first embodiment.

Next, the backfill material 500 is installed between the reinforcement soil block and the rearing soil as in Example 1, and the finishing cap 800 is installed on the upper surface of the top reinforcement soil block to complete the installation of the reinforcement soil retaining wall. do.

Thus, as time passes, the germination plant 320 of the germination body part 300 grows, and thus recording on the slope is possible. At this time, the germination body portion 300 may be replaced by adopting a bolt nut coupling method.

In the case of the conventional reinforcement earth retaining wall according to the present invention, the deformation of the reinforcement earth front wall due to the settlement of the backing soil of the reinforcement earth retaining wall inevitably occurs, and the reinforcement soil of the back surface is made by using the reinforcement earth block installed on the free surface by the present method. By applying pressure (pre-stress) to the sieve, it is possible to prevent defects due to the settlement of the back soil, and when the soil slope and the rock slope collapse, the soil is supported by a rock bolt or earth anchor on the reinforcement soil block of this method. Not only can the stability of slopes and rock slopes be secured, but the greening of the reinforcement soil retaining wall is advantageous by the germinating body part, and the inclination of the reinforcement soil retaining wall becomes very easy.

In addition, it is possible to prevent rock fall and slope weathering, not only recording by germination body, but also to prevent rock relaxation by not cutting the entire slope at the beginning. This has the advantage of reducing the risk of collapse by inflow.

An embodiment of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

Claims (8)

In reinforcement retaining wall construction Consists of a pair of tetrahedral-shaped support blocks spaced apart from each other in the middle of the lower horizontal block of the tetrahedral shape protruding in the upward and rear direction, the through-hole is formed from the front surface and the rear surface of the lower horizontal block and the support block, cut Reinforcement soil block installed in the vertical and horizontal direction on the slope ; It is connected to one surface of the horizontal reinforcement including a stretchable geogrid extending to the rear of the rear soil, the other end is inserted into the through hole to tension the horizontal reinforcement is tensioned from the front of the reinforcement earth block, and then the fixture is installed in the through hole A horizontal tension member fixed to the; And Both sides are detachably installed in the mounting part including a groove or an insert extending vertically between the lower horizontal block and each supporting block, and the filling soil containing germinated plants is filled inside, and the germination in the form of a bag is opened up and down. Vegetation-reinforced soil retaining wall in which prestress is introduced to the reinforcement soil free surface in a horizontal direction, including a body portion. The method of claim 1, wherein the backfill material for drainage including rubble is further filled between the rear surface of the germinated body and the front surface of the reared soil, and a vertical reinforcement is further installed between the rear surface and the front surface of the reared soil so as to be vertical or inclined. The reinforcing material is a vegetation reinforcement soil retaining wall in which prestress is introduced to the free surface of the reinforcement soil in a horizontal direction, characterized in that it comprises a grid-shaped geogrid. 3. The method of claim 1 or 2, wherein the horizontal reinforcing material is a fiber reinforcing material including a geogrid; Panel-shaped reinforcement in the form of a plate; And a steel reinforcing material including an earth anchor used when the cut slope is a rock. The vegetation reinforcing soil retaining wall in which prestress is introduced into a free reinforcement body in the horizontal direction, wherein the reinforcement is used. [5] The horizontal direction of claim 3, wherein the anchoring of the horizontal tension member to the anchorage is performed by a fixing nut or a screwing type using a fixing nut or a wedge type using a fixing wedge and a fixing wedge. Vegetation-reinforced soil retaining wall with prestress introduced on the free surface of reinforced soil. The horizontal direction according to claim 1 or 2, wherein the germinated body part is made of a synthetic material of a double lattice type having a shear resistance ability such that vegetation soil and backfill material are not pushed out due to earth pressure. As a result, the vegetation-reinforced soil retaining wall with prestress is introduced into the free surface of the reinforced soil. According to claim 1 or 2, wherein the reinforcement soil block is made to be inclined horizontally, or piled up toward the backing soil to the front portion of the retaining wall characterized in that the prestress in the horizontal direction reinforcing soil free surface characterized in that Introduced vegetation reinforcement retaining wall. The retaining wall of the vegetation-reinforced soil retaining wall of claim 1 or 2, wherein the lower horizontal block and the support block are formed integrally with each other. In installing the reinforcement soil retaining wall in the original ground which is rock, Cutting the original ground, which is a rock, from the upper surface of the original ground to install the reinforcement soil block, thereby forming a first cut slope downwardly; Inserting and installing a horizontal tension member including an anchor or rock bolt from the lower end of the first cut slope to the first cut slope; Installing a vertical reinforcing material including a geogrid on the first cut slope; Consists of a pair of support blocks spaced apart from each other in the middle of the lower horizontal block of the tetrahedral shape protruding in the upward and rear direction, the through-hole is formed from the front surface to the rear surface of the lower horizontal block, the angle close to the lower horizontal block The reinforcement block includes a germination body including a bag-shaped germination body, which is installed on both sides of the support block and includes a groove or an insert extending up and down so as to be detachable and filled with vegetation soil containing germinated plants. Installing, but installing the protruding end of the horizontal tension member to be inserted into the through-hole of the reinforcement block; After the tension of the horizontal tension member, the step of fixing the reinforcement soil block, including; step of installing the reinforcement soil retaining wall by repeating the step of installing the reinforcement soil block including a pre-stressed vegetation reinforcement to the free surface of the reinforcement soil in the horizontal direction Reinforced soil retaining wall construction method using retaining wall.

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