KR101015619B1 - adjustable anchor device, retaining wall and method for constructing a retaining wall with reinforcement soil - Google Patents

Abstract

The present invention is an adjustable fastening mechanism for use in the construction of the reinforced earth retaining wall.

Reinforcement retaining wall construction, after forming the cut slope, install the anchor inclined to the cut slope to tension the anchor and apply pressure to the cut slope. The one end of the tensioning part may be connected to the reinforcement by directly installing the reinforcement on the reinforcement block or directly on the reinforcement block, and the reinforcement block or the reinforcement is adjusted toward the cut slope along with the height adjustment of the tension part. After tensioning so that a pulling force is applied, backfilling and compacting for drainage is performed between the reinforcement block and the cut slope. The fasteners used in this construction can adjust the height of the tension part according to the height of the reinforcement earth block while allowing the rotation of the tension part, so that the work is easy and the supporting force is high, and the top down method is simple and beautiful in appearance. Can be constructed.

Reinforced soil, retaining wall, incision slope, cut slope, incision, anchor.

Description

Adjustable anchor device, retaining wall and method for constructing a retaining wall with reinforcement soil}

The present invention relates to an adjustable fixing mechanism for use in the construction of reinforcement earth retaining wall, and more particularly, to a reinforcement earth retaining wall construction fixing mechanism that can be usefully used for the construction of the reinforcement earth retaining wall installed in the cut portion.

In general, when a change in the natural topography is required, that is, in the case of construction of infrastructure for roads, railways, etc., or for the construction of a site for a building, the original ground is cut or piled up to secure the ground required for the purpose. Because of this, slopes are formed due to the elevation difference with the surrounding ground, and artificial structures such as retaining walls and stone structures are installed on the slopes to protect the slopes and maximize the utilization of the site.

When the slope is formed to deform the ground to create a site suitable for the purpose, if the slope is formed at an angle greater than the natural angle of repose to increase the utilization of the site, the slope does not maintain its shape and slides down. This is called the displacement of the slope, or the collapse of the slope. The collapse of the slope appears in the form of arc-shaped fracture, and one type of artificial structure that is installed to prevent the collapse of the slope is the reinforced soil retaining wall.

1 is a cross-sectional view showing an example of a general reinforced earth retaining wall.

As shown in FIG. 1, when there is a large amount of free space outside the cut slope 20, the blocks 22 are stacked at a sufficient distance from the cut slope 20, and a block () is formed between the block 22 and the cut slope 20. A reinforcing material 24 connected to 22 is disposed, and the back filling material 26, the filling material 28, etc. for drainage are filled between the block 22 and the cut slope 20 to form the retaining wall 30.

Unlike the existing concrete retaining wall, such a reinforced soil retaining wall 30 does not require a rigid foundation, so it is easy to construct even where the topography of the foundation is inclined, and the front part is easy to construct even in a curved shape, and concrete in the field There is no need for troublesome work such as pouring, and all the materials used are factory products, so it is easy to control quality, quick to construct, and durable against unexpected situations such as earthquakes, and the retaining wall is formed by stacking small blocks. The visual sense of pressure is less, and since the block is manufactured at the factory, it is easy to build beautiful structures by inserting colors or patterns on the surface, and the higher the height, the more economical it is than the concrete retaining wall.

However, such a conventional reinforcement earth retaining wall 30 is not only a large amount of free space for the retaining wall 30 installation, but also requires a large amount of filling material to be filled between the retaining wall and the cut slope as well as time and work for compaction. There is a problem that requires a lot of manpower.

Reinforcement soil retaining wall has the limitation that the reinforcement made of steel strip or geogrid with a certain length should be installed on the back wall of the retaining wall because of its structural characteristics, but it is widely used in the fill section, but there is a problem that excessive earth volume occurs in the cut section. Limited use.

In another example, a conventional retaining wall using a permanent anchor may be cut to the original ground with a natural angle of repose to a planned height, then anchored at an angle to the slope horizontally or at an angle, then a precast panel on the front and backfilled behind the panel. There is a method of completing the retaining wall structure by applying prestress on the front of the panel after performing it.However, this method cuts away the ground at a natural angle of repose to the planned height without any reinforcement and forms a slope, which may cause loosening of the ground. Safety is not secured. In addition, since the tension for introducing the prestress is performed at the front of the panel, prestress loss occurs due to the compression of the backfilled soil, and it is difficult to secure the flatness of the completed retaining wall surface due to the uneven compressibility of the backfilled soil.

Publication No. 10-2007-0043757, Acupressure plate and PC panel combined retaining wall structure and its construction method is to cut the surface and install the anchor, attach the front precast panel directly to the slope, and secure the slope by tensioning the anchor. Retaining wall construction method is disclosed, but it is difficult to install drainage layer between concrete panel and cut slope, which not only has a weak point in drainage treatment which greatly affects slope stability, but also the front concrete panel and There is no way to fill the space by backfilling between cut surfaces, and since the surface of the front concrete panel is formed in the shape of cut surface, it is difficult to secure the flatness of the completed retaining wall surface, and to prestress introduced into the slope through the anchor. There is also a disadvantage that can not use the load effectively.

In addition, Publication No. 10-2007-0117059, the public patent publication of the cut slope reinforcement earth retaining wall structure discloses a fixing mechanism for holding the geogrid connected to the reinforcement earth block, but it is not possible to adjust the height of the portion holding the geogrid There are disadvantages.

Accordingly, when using the fixing mechanism disclosed herein, the geogrid is pulled in the inclined direction when the reinforcement block does not exactly match the planned height. In this case, the bearing capacity of the anchor falls, geogrid is not arranged in a uniform distribution, and various disadvantages occur.

An object of the present invention is an adjustable fixing mechanism for the construction of reinforcement earth retaining wall which can pull the reinforcement soil block or reinforcement connected to the reinforcement soil block horizontally toward the cut slope even if the height of the reinforcement soil block is changed during the installation of the reinforcement soil block. To provide.

Another object of the present invention is to provide an adjustable fixing device for use in the construction of a reinforcement earth retaining wall that can easily adjust the height of the reinforcement soil block or the portion connected to the reinforcement.

Still another object of the present invention is to provide an adjustable fixing mechanism for overcoming the reinforcement earth retaining wall, which can be easily installed on the cut section by overcoming the disadvantages of the conventional construction method described above.

Another object of the present invention is to stabilize the slope by reinforcing the original ground at the same time the cutting for the formation of the slope even when it is difficult to secure enough back length for the installation of the reinforcement when installing the reinforcement retaining wall for the cut surface slope protection reinforcement It is to provide an adjustable fixing mechanism for the construction of the reinforced earth retaining wall to enable the construction of the reinforcement earth retaining wall irrespective of the size of the free space for the installation.

It is another object of the present invention to provide an adjustable fastener for use in the construction of a reinforcement earth retaining wall that is easy to install and excellent in supporting the cut slope.

Still another object of the present invention is to provide an adjustable fixing mechanism for use in constructing a reinforced soil retaining wall that is effective in a top-down method.

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The fixing device according to the present invention is provided with a tension portion for pulling a support, an anchor portion inclinedly connected to the tension portion and fixed to the cut slope, and installed between the tension portion and the anchor portion, and the height of the tension portion. It is preferable to include a height adjustment for adjusting the.

The height adjusting part has a first helix and one side installed at one of one end of the tension part and one end of the anchor part at a portion where the tension part and the fixing part are connected to each other, and a third helix is coupled to the first helix. The side includes a height adjusting member which is installed to be freely rotatable at one end where no first spiral is formed and connects the tension part and the anchor part and reduces or enlarges the gap between the tension part and the anchor part according to the rotational direction. good.

The height adjusting part is coupled to the first spiral and the second spiral and the first spiral and the second spiral respectively provided at one end of the tension portion and one end of the anchor portion of the portion where the tension portion and the anchor portion are connected to each other; And a height adjusting member having a spiral and a fourth spiral to connect the tension part and the anchor part and to reduce or increase a distance between the tension part and the anchor part according to a rotation direction, wherein the first helix and the second helix The third spiral and the fourth spiral may be formed in opposite directions to each other, or may be formed in opposite directions to each other.

In some cases, the reinforcement may be pulled toward the reinforcement soil block to adjust the locking position of the locking portion so that the tensile force is applied to the tension portion. Furthermore, it is possible to adjust the horizontal position of the anchor portion so that the tensile force is applied to the tension portion.

Most preferably, the length adjustment part for adjusting the length of the said tension part is formed in the said tension part.

The tension part has a locking member formed at one end of the locking part to be caught by the supported object, a bending member connected to the anchor part and being bent at one side thereof, and connecting the locking member to the bending member and having a fifth spiral formed on at least one side thereof. And a length adjusting member for adjusting the length of the tension part by rotation, and at least one of the locking member and the bending member may be formed with a sixth spiral coupled to the fifth spiral.

The length adjusting member has a spiral portion in which the fifth spiral is formed on an inner circumferential surface thereof, an opening portion connected to the spiral portion and open at one side thereof, and connected to the opening portion to allow the bending member to be inserted therein. It is preferred that the bent member connection portion is formed in the and allows the rotation of the bent member.

Reinforcement soil retaining wall construction method according to the present invention, the cut slope forming step of forming the cut slope, the anchor portion is installed inclined to the cut slope and the anchor portion is installed by the anchor portion to apply the pressing force to the cut slope, the cut slope Reinforcement block installation step of installing the foundation on the bottom and piles the reinforcement soil block, connecting the one end of the tension of the fixing mechanism to the height adjustable to the anchor portion and the other end of the tension portion is installed directly to the reinforcement soil block or the reinforcement soil block And a tension unit installation step for connecting the reinforcement, a tension unit height adjustment step for adjusting the height of the tension unit, a tension step for applying a force to pull the reinforcement block or the reinforcement to the cut slope to the tension unit, and Backfill and stuffing for drainage between reinforcement block and cut slope And to fill a step rammer is preferred.

In the tension height adjustment step, it is preferable to adjust the height of the tension portion by adjusting the length of the portion connected inclined to the anchor portion.

The tensioning step is preferably adjusted to shorten the length of the tension portion to tension the reinforcement.

The reinforcement block installation step and subsequent steps may be repeated to the planned height.

When the height of the entire slope is high, it is better to divide the height of the entire slope into two or more units suitable for one-time construction, and construct it by top-down method with a step between each unit height.

Reinforced soil retaining wall according to the present invention is implemented by the reinforcement earth retaining wall construction method according to the present invention.

When using the fixing mechanism according to the present invention, while allowing the rotation of the tension portion can be adjusted according to the height of the reinforcement toe block height of the tension portion is easy to work and the holding force of the fixing mechanism is large.

As the cutting progresses and the anchor is installed on the stable original ground where relaxation does not occur, the cutting slope is stabilized, thereby maximizing the efficiency of the fixing mechanism. Accordingly, the angle of the slope can be formed as close to the vertical as possible to maximize the utilization of the site.

The reinforcement soil retaining wall installed on the front of the slope does not act as the active force of the slope, it is not necessary to install a separate reinforcement.

According to the slope stability analysis results, the angle of the anchor and the size of the prestress are applied to express the optimum efficiency, and as a result, the number of expensive and expensive anchors can be reduced, resulting in economical construction.

Regardless of the curved shape of the cut slope, the front reinforcement retaining wall can be constructed, which increases the flatness of the finished structure, resulting in excellent construction quality.

Incidentally, in the past, reinforcement retaining walls were installed only in areas where the back lengths for reinforcement, such as fill parts, could be secured, and when it was difficult to secure the back lengths for reinforcement, other types of structures were used. By using the method of the invention, it is possible to maintain consistency of construction.

Retaining wall of the present invention is to adjust the horizontal angle of the anchor according to the soil test results and the slope stability analysis results so that the load introduced to the anchor can contribute most effectively to the slope stability, anchor and acupressure plate, and added as needed The slope is stabilized by the load introduced to the reinforcement installed as, the front reinforcement soil block has a technical feature that the earth pressure of the cut slope is not transmitted.

In this method of construction of retaining wall, the cutting is progressed from the top of the cut section and at the same time, the anchor is installed to stabilize the slope before the loosening of the ground occurs. After forming the cut slope of a certain height, the reinforcement retaining wall can be completed, and the next step of cutting can be carried out continuously by using the foundation part of the completed reinforcement retaining wall as a small step. It becomes possible. The small ends thus formed are capable of planting trees for landscaping to form environmentally friendly retaining wall structures.

As described above, the slopes have an active force to act along the destructive envelope, which is the engineering property of the back soil, which is explained by the cohesion and the internal friction angle. If the force is greater than the resistance, the slope will be active, on the contrary, if the resistance is greater than the slope will be stable.

On slopes constructed at an angle greater than the natural angle of repose, the slope is active because the active force is greater than the resistance, and when the load is applied in the opposite direction to the slope, the prestress is applied by means of a permanent anchor. Increasingly, the slope maintains the estimate.

The prestress applied to the anchor is applied to the slope in a direction corresponding to the installation angle of the anchor. The slope stability analysis based on the soil test results in the retaining wall installation area can be used to predict the magnitude and direction of the active force. The analysis results can be used to calculate the most efficient anchor installation angle and prestress.

The reinforcement soil retaining wall of the present invention calculates the angle of installation and prestress of the anchor which can most effectively act on the completed slope by slope stability analysis, and the angle calculated before the slope is cut and the ground is relaxed. The prestressing anchor is installed to secure the slope, and the cutting of the slope is completed up to the planned height and the retaining wall is constructed from the bottom of the slope to the front of the slope to complete the retaining wall.

When the height of the slope is high, it is possible to complete the retaining wall for the entire slope by dividing it into a certain height unit, installing a small step in the middle, and up to the small step as a construction unit. do.

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

Figure 2 is a cross-sectional view showing an installed state of the anchor mechanism according to the present invention, Figures 3a to 3e is a view showing the components of the tension portion of Figure 2 anchor mechanism, respectively.

As shown in Figures 2 to 3e adjustable adjustable mechanism 100 used in the construction of the reinforcement earth retaining wall according to the present invention is provided with an anchor portion 110 for fixing to the cut slope (20). The anchor portion 110 is fixed to the cut slope 20 inclined with respect to the horizontal plane, thereby protruding obliquely upward of the cut slope 20. The first spiral 112 is formed on the outer circumferential surface of the protruding portion of the anchor portion 110. The fixing of the anchor portion 110 to the cut slope 20 will be described later.

In addition, the fixing device 100 according to the present invention includes a tension unit 130 connected to the anchor unit 110. Tensile portion 130 is connected to the anchor member 110 and the locking member 140 is formed at one end of the engaging portion 142 is caught on the supported object (geogrid in Figure 4), one side is bent to form a bending portion and anchor The fifth member 162 formed at least on one side by connecting the bending member 150 having the second spiral 152 formed thereon to the connection portion 110 and the locking member 140 and the bending member 150. It is provided with a length adjusting member 161 to adjust the length of the tension portion 130 by the rotation.

One end of the bending member 150 is formed with a head 154 to be caught by the bending member connecting portion 164 of the length adjustment member 161 described later.

At one end of the locking member 140, a sixth spiral 144 coupled to the fifth spiral 162 is formed. The sixth spiral 144 may be formed in the bending member 150, in which case the fifth spiral 162 should be formed on the opposite side of the length adjusting member 161. The sixth spiral 144 should be formed in at least one of the locking member 140 and the bending member 150.

The catching part 142 is a part that can be variously deformed in addition to a shape in which the end is bent at approximately 90 degrees because it can be connected to a supported object such as a geogrid.

Fixing device 100 according to the present invention is provided with a height adjustment unit 180. The height adjustment unit 180 is to adjust the height of the tension unit 130 according to the height of the reinforcement soil block 190 described later to be able to pull the reinforcement such as geogrid horizontally, if possible, tension unit 130 And a height adjusting member 182 installed between the anchor part 110 and the long nut shape connecting the tension part 130 and the anchor part 110. On the inner circumferential surface of the height adjusting member 182, third spirals 184 coupled to the first spiral 112 and fourth spirals 186 coupled to the second spiral 152 are formed. In this case, in order to allow the connecting portions to move closer to or away from each other as the height adjusting member 182 rotates, the first spiral 112 and the second spiral 152 are formed in opposite directions, or the third spiral 184 and Fourth spiral 186 should be formed in opposite directions to each other.

Here, the height adjusting unit 180 is the first helix 112 at any one of one end of the tension portion 150 and one end of the anchor portion 110 of the portion where the tension portion 130 and the anchor portion 110 are connected to each other. And a third spiral 184 coupled to the first spiral 112 on one side of the height adjusting member 182, and the other side where the first spiral 112 is not formed on the height adjusting member 182. The height adjustment unit 180 may be configured by connecting freely.

The fixing device 100 according to the present invention includes a length adjusting unit 160 for adjusting the length of the tension unit 130. The length adjusting unit 160 includes a length adjusting member 161, and the length adjusting member 161 is connected to the through hole 162a and the through hole 162a having the fifth spiral 162 formed on the inner circumferential surface thereof, and one side thereof is open. The opening member 166 and the opening member 166 connected to the opening member 166 and allowing the bending member 150 to be inserted therein are formed therein, and the bending member connection part allowing the rotation of the bending member 150. It has the structure provided with 164.

The length adjusting member 161 may be configured in a form in which the left and right are interchanged with each other. In this case, the positions of the sixth spiral 144 and the head 154 of the bending member 150 should be changed. In some cases, helix may be formed on both sides.

That is, since the anchor portion 110 is inclined to the cut slope 20, when the height adjusting member 182 is rotated, the length of the portion connected to the fixing portion 110 increases and the height of the tension portion 130 increases or decreases. . Accordingly, in the present invention, the tension between the reinforcement and the anchor portion 110 can be pulled horizontally by adjusting the height of the 130.

Since the length adjusting member 161 coupled to the head 154 of the bending member 150 can be freely rotated with respect to the bending member 150, the rotation angle of the bending member 150 can be adjusted as necessary. And as the length adjusting member 161 is rotated, the length of the tension portion 130 is reduced or increased.

The tension bar 200 is inserted into an end of the geogrid, and the locking portion 142 of the locking member 140 is caught by the tension bar 200.

Figure 4 is a cross-sectional view of the retaining wall constructed in accordance with the reinforced soil retaining wall construction method of the present invention.

As shown in the cut slope 20, the fixing mechanism 100 described above is fixed inclined at intervals vertically.

A retaining wall 210 is provided outside the cut slope 20. The retaining wall 210 is piled up by connecting the reinforcement soil block 190 on the foundation 191 by connecting pins 192 and connecting the geogrid 194 to the fixing mechanism 100 on the reinforcement soil block 190. The height adjustment unit 180 to adjust the height of the tension unit 130 to adjust the level of the reinforcement such as geogrid 194, the length adjustment unit 160 to adjust the length of the tension unit 130 to adjust the geogrid 194 ) And pull it out. When the backfill drainage layer 198 is formed in the state in which the perforated pipe 196 is disposed inside the reinforcement soil block 190, and the inside is filled with concrete to form a stuffing layer 199 as shown in FIG. 4. The retaining wall 210 can be constructed in stages.

Figure 5 is a block diagram for explaining the construction process of the reinforced earth retaining wall according to the present invention, Figure 6 is an explanatory view for explaining the construction process of the reinforced earth retaining wall according to the present invention.

Referring to Figures 5 and 6 and the prior art, the cut section reinforcement soil retaining wall construction method according to the present invention in detail as follows.

First, a cut slope is formed (step 1). This excavates the cut plan surface with a forklift 40 or the like, as shown in FIG.

Then, the anchor portion 110 of the fixing mechanism 100 described above is installed to be inclined with respect to the cut slope 20 (step 2). At this time, it is preferable that the anchor portion 110 protrudes inclined upwardly from the cut slope.

6B to 6F, the installation of the anchor unit 110 is performed by drilling for installing the fixing unit 110 at a predetermined depth and angle on the cut slope 20, as shown in FIG. 6B, and FIG. 6C. As shown in the anchor hole 110 is inserted into the perforated hole and grout (grout) is injected and then cured. Thereafter, as shown in FIG. 2, the anchor plate 110 is fitted with a pressure plate 114 and tensioned with a nut 116 to introduce tensile stress into the anchor 110. By doing in this way, the effect which presses the cut slope 20 and applies a load in the direction which suppresses the action of the cut slope 20 is realized. Then, as shown in FIG. 6d, the lower end of the stable cut slope 20 is subsequently excavated in two stages, and the anchor part is installed in the above process. The depth of the cut is then based on the calculation of the slope according to soil quality. This process is repeated to install the anchor portion 110 of the fixing mechanism 100 while ensuring the stability of the slope to the required height as shown in Figures 6e and 6f.

Next, a foundation 191 is installed at the lower end of the cut slope 20 as shown in FIG. 6G (step 3), and a reinforcement soil block 190 is installed thereon as shown in FIG. 6H (step 4). At this time, the reinforcement soil block 190 is stacked by stacking up to the height of the tension portion 130 at the bottom.

Thereafter, one end of the tension unit 130 is connected to the anchor 110 so that the height can be adjusted, and the other end of the tension unit 130 is directly connected to the reinforcement soil block 190 or the geogrid 194 or the like in the reinforcement soil block 190. Install the reinforcement and connect to it (step 5). In this connection, the height adjusting member 182 and the tensioning unit 130 described above are allowed to rotate and are connected by using the length adjusting member 161 to adjust the length. At this time, the tension bar 200 is inserted into the geogrid 194 in a zigzag, and the hooking portion 142 is connected to it by hooking it.

Then, the height adjusting member 182 is rotated to adjust the height of the tensioning unit 130 so that the height of the tensioning unit 130 is a height capable of horizontally pulling the reinforcement soil block 190 or the geogrid 194 ( Step 6).

Then, the length adjustment member 161 is rotated to reduce the length of the tension unit 130 to pull the reinforcement such as the geogrid 194 so that the tensile force acts on the reinforcement and the tension unit 130 (step 7).

The working sequence of tension height adjustment, tension length adjustment, etc. can be changed according to the working situation if necessary.

At this time, the reinforcing material installed in the reinforcement soil block 190 is used for fixing the reinforcement soil block 190 to the fixing mechanism 100 to the block 190.

Thereafter, between the reinforcement soil block 190 and the cut slope 20 backfills the soil or aggregate, which is easy to drain, and stuffs the concrete afterwards (step 8). At this time, the memorial pipe is also installed.

Thereafter, repeating steps 4 to 8, the reinforcement soil block 190 is piled up to a predetermined height as shown in FIGS. 6I to 6L (step 9), and the reinforcement soil retaining wall 210 is completed (step 10).

When the height of the cut slope 20 is high, the height of the entire cut slope 20 is divided into two or more units suitable for one-time construction, and the reinforcement retaining wall 210 is completed from the top with a step between each unit height. And it will be installed downward, and in this way, it is possible to construct it down (Top Down).

Preferred components of the fixing device 100 according to the present invention are as follows.

1) Height adjusting member 182: Long sleeve-shaped nut, the direction of the third spiral 184 and the fourth spiral 186 is formed opposite to the center with respect to the center in the longitudinal direction, both sides of the bending member 150 The second spiral 152 formed in the first and the first spiral 112 in the head portion of the anchor portion 110 is bound. The sleeve-shaped long nut serves to adjust the height of the tension unit 130 by adjusting the length of the portion connected to the fixing unit 110 in an inclined state.

2) Bending member 150: A connecting accessory bent at about 10 degrees, one end of which is the second spiral 152 of the male spiral and is connected to the 1) part, and the other end of the head having a diameter larger than the body ( 154) and fluidly connect with part 3) below.

3) Length adjusting member 161: A shape similar to a commonly used turn buckle, but only one side of the female thread and the other side is larger than the diameter of the body 2) but smaller than the diameter of the head 154 portion (164a) It is a structure that fixes part 2) only in the longitudinal direction and gives free movement to rotation and refraction.

4) Hanging member 140: has a sixth spiral 144 of the male thread connected to the fifth spiral 162 corresponding to the female threaded portion of the 3rd part and a hook-shaped engaging portion 142 of the opposite side As an accessory, the locking portion 142 serves to fix the reinforcement such as the geogrid 194 using the tension bar 200.

5) Anchor part 110: As a component that is fixed to the cut slope 20 inclined, serves to support the tension section 130 on the cut slope (20). And it also serves to reduce the active force by pressing the incision slope 20 with the pressure plate 114 and the nut 116.

6) Tensile bar 200: When using the mesh geogrid 194 as a reinforcing material when connecting the engaging portion 142 of the 4) part serves to induce the load to be evenly distributed over the entire width of the geogrid.

1 is a cross-sectional view showing an example of a general reinforced earth retaining wall,

Figure 2a is a cross-sectional view showing the installed state of the anchor mechanism according to the present invention,

FIG. 2B is an external perspective view showing only the length adjusting member 161 in FIG. 2A.

3a to 3e are views showing the parts of the tension of the anchor mechanism of FIG.

Figure 4 is a cross-sectional view of the retaining wall constructed in accordance with the reinforced soil retaining wall construction method of the present invention,

Figure 5 is a block diagram for explaining the construction process of the reinforced earth retaining wall according to the present invention,

Figure 6 is an explanatory diagram for explaining the construction process of the reinforced soil retaining wall according to the present invention.

* Description of the symbols for the main parts of the drawings *

20: cut slope 100: fixing mechanism

110: anchor portion 130: tension portion

140: locking member 150: bending member

160: length adjusting unit 161: length adjusting member

180: height adjustment unit 182: height adjustment member

190: reinforced earth block 194: geogrid

200: tension bar 210: reinforced earth retaining wall

Claims (12)

delete A rod-shaped tension portion formed at one side to hold a supported object and an inclined bent portion formed at an opposite side thereof; An anchor portion fixed to the cut slope and connected to the bending portion of the tension portion inclinedly; A height adjusting part installed between the tension part and the anchor part to adjust a height of the tension part; and Reinforcement soil is provided between the tension portion and the height adjustment portion reinforcement soil including a length adjustment portion to adjust the length of the tension portion separately from the height adjustment portion or to adjust the length of the tension portion as well when the height adjustment by the height adjustment portion Adjustable fasteners for use in retaining walls. The first and second spirals of claim 2, wherein the height adjustment unit comprises spirals formed at opposite ends of a portion where the tensioning portion and the anchor portion are connected to each other, respectively, in the opposite direction. In order to be coupled to the second spiral and each of the inner circumferential surface both ends having a third spiral and a fourth spiral to form a spiral in the opposite direction to each other is screwed to the tension portion and the anchor portion and the tension portion depending on whether the rotation An adjustable fastener for use in the construction of a reinforcement earth retaining wall, characterized in that the cylindrical height adjustment member that can adjust the height while reducing or increasing the distance from the anchor portion. According to claim 2, wherein the tension portion is formed by separating each of the engaging member having a sixth spiral is formed at one end of the engaging portion and the bending member having a head for engaging at the other end and the bending portion formed at the other end, The length adjusting part is formed of a cylindrical length adjusting member having a through hole at both ends with respect to a body having an opening, and a sixth spiral of the locking member is moved to a fifth spiral formed on an inner circumferential surface of the one side hole of the length adjusting member. Coupled to the other side hole of the length adjusting member, the bending member is inserted through the opening, and then the head is pivotally connected in a state of being caught in the through hole, and the second spiral of the bending member is connected to the height adjusting member. Adjustable fasteners for use in the construction of reinforcement earth retaining wall, characterized in that screwed to the fourth helix. delete delete delete delete delete delete delete delete

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