KR101993609B1 - Earth retaining structure using concrete block for the anchorage of anchor pc-strands and construction method thereof - Google Patents

Abstract

According to one embodiment of the present invention, provided are an anchor earth retaining structure and a construction method thereof. The anchor earth retaining structure includes: an earth retaining wall vertically installed so as to adhere to a side wall of an excavation area; an anchor anchoring block spaced apart from the earth retaining wall to be installed in the ground; and an anchor including an anchor tension member penetrating the ground from the anchor anchoring block and extended to be inclined downwards to be fixed to the earth retaining wall.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an anchor earth retaining structure and a method of constructing the same,

The present invention relates to an anchor earth retaining structure for a concrete block anchor structure and a method of constructing the same, and more particularly, to an anchor retaining structure and an anchor retaining structure for anchor construction, minimizing a surrounding ground area required for construction, And a construction method.

If the ground is excavated in order to construct the basement of the building, the ground displacement will inevitably occur and it is very important to select the ground stabilization method to minimize the ground displacement and deformation. In particular, designing anchor earth retaining structures considering the magnitude, distribution, and displacement of transverse earth pressure acting on the wall is becoming very important in the construction of today 's underground structures. Therefore, it is essential to select an economical and safe retaining method considering all the conditions such as the topography and geological condition of the site.

A strut method is one of typical conventional soil retaining methods. In this method, after the earth retaining walls are respectively installed on the sidewalls of the excavation ground, the struts are horizontally mounted between the earth retaining walls facing each other, so that the two earth retaining walls facing each other are not fallen to the excavation ground, do.

However, such a method has a disadvantage in that the air is excessively consumed due to the excavation and strut installation, and the workability is lowered due to the interference of the stratum under the construction of the underground structure. When the stratum is dismantled, So that additional cost is required.

An earth anchor method shown in FIG. 1 has been introduced to solve some of the disadvantages of the strut method.

The existing earth anchor method is a method in which the earth retaining wall body 10 is installed on the sidewall of the excavation ground and then each of the earth retaining wall bodies 10 is brought into close contact with the side wall of the excavation ground using the anchor 40 . In this case, the anchor 40 is provided with an inflator 42 that is embedded in the ground so as to expand as the mortar or the like flows into the inflator, and an inflator 42 having one side connected to the inflator 42 and the other side passing through the perforated wall 10 An anchor tensioning material 44 stretched in an oblique direction and a fastening member 46 fastening the other side of the anchor tensioning material 44 to the earth retaining wall 10. The bottom wall of the fastening member 46 is extended in the extension direction of the anchor tensile material 44 so that the surface to which the tensile force of the anchor tensile material 44 is applied is perpendicular to the tensile direction of the anchor tensile material 44. [ And a support bracket 20 for supporting the fastening bracket 30. The fastening bracket 30 is provided at a right angle to the fastening member 46,

This earth anchor method has a merit that a work space is secured because there is no interference of struts, the workability is superior to that of the strut method, and a separate workhorse is not necessary even if the floor height of the underground is high. However, such an earth anchor method also requires a period of curing to fix an anchor, causing a certain air delay, and the anchor grouting infusion agent 42 invades the adjacent ground, causing pollution and various civil complaints. In addition, When the construction site is located in the distribution area of the soft ground near the beach or the river, it is difficult to apply because it is difficult to fix anchor.

Therefore, a new soil - retaining method is needed to solve these problems.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide an anchor earth retaining structure which can be easily applied by fixing an anchor by using an anchor fixing block installed in the ground and minimizes a surrounding ground area required for construction, And a method of constructing the same.

The technical problems of the present invention are not limited to the above-mentioned technical problems, and other technical problems which are not mentioned can be understood by those skilled in the art from the following description.

According to an embodiment of the present invention, an anchor earth retaining structure is provided. Wherein the anchor earth retaining structure is vertically installed to be in close contact with a side wall of the excavation area; An anchor fixing block spaced apart from the retaining wall and installed in the ground; And an anchor including an anchor tensile member extending downward from the anchor fixing block through the ground to be fixed to the earth retaining wall body.

Preferably, the anchor includes the anchor tensile material; A block fixing member fixing one end of the anchor tensile member to the anchor fixing block; And; And a wall fixing member for fixing the other end of the anchor tensile material penetrating the earth retaining wall to the entire surface of the earth retaining wall.

In addition, preferably, the anchor fixing block may be installed outside the virtual action failure surface of the ground.

In addition, preferably, the anchor fixing block may be constructed of spot-laid concrete or precast concrete.

Preferably, the anchor fixing block includes at least one support surface which is in close contact with the ground and is horizontally or vertically supported, and at least one anchor insertion hole for inserting the anchor tensile material, Plane.

Also, preferably, the cap block is installed at an upper end of the earth retaining wall; And a horizontal support beam connecting the cap block and the anchor fixing block to support the earth retaining wall.

Preferably, the anchor includes a first anchor and a second anchor, and the anchor tensile material of the first anchor and the anchor tensile material of the second anchor extend at different angles from the anchor fixing block, And is spaced apart from the cap block in a sequential manner at a predetermined interval, and the interval may be 2 to 3 meters.

According to one embodiment of the present invention, a method of constructing an anchor earth retaining structure is provided. The method includes the steps of: providing an earth retaining wall in close contact with a sidewall of an excavation area; Installing an anchor fixing block in the ground away from the earth retaining wall; Drilling at least one anchor insertion hole downwardly inclined at a different angle from the anchor fixing block through the ground to the earth retaining wall; Inserting the anchor tensile material from the anchor fixing block to the earth retaining wall through the anchor insertion hole and fixing one end of the anchor tensile material to the anchor fixing block; And a step of pulling the anchor tensile material and fixing the other end of the anchor tensile material penetrating the earth retaining wall to the entire surface of the earth retaining wall.

Preferably, the method further comprises: installing a cap block on an upper end of the earth retaining wall; And installing a horizontal support beam interconnecting the cap block and the anchor fixing block, wherein the step of securing the other end of the anchor tension member to the entirety of the earth retaining wall comprises: Step < / RTI >

Preferably, the anchor fixing block may further include a step of reinforcing the ground for installing the anchor fixing block, and the step of reinforcing the ground may be performed by replacing the soft ground or piling the pile.

According to the present invention, by anchoring an anchor to an anchor fixing block installed in the ground, unlike the conventional method of directly fixing an anchor to a ground, construction and disassembly of the anchor are simpler and can be applied to soft ground.

Further, according to the present invention, there is no need to inject the grouting filler directly into the ground, and the steel wire can be easily recovered, which is advantageous in that it is more environmentally friendly.

In addition, according to the present invention, it is possible to minimize civil engineering problems by minimizing the area of the surrounding ground necessary for anchor construction, and to apply the anchoring retention method to a narrower area.

Further, according to the present invention, since the anchor fixing block can be manufactured in the form of precast concrete, the blocks can be manufactured more easily and the air can also be greatly shortened.

Further, according to the present invention, it is possible to recover an anchor fixing structure and use it for other construction sites or other purposes.

BRIEF DESCRIPTION OF THE DRAWINGS A brief description of each drawing is provided to more fully understand the drawings recited in the description of the invention.
1 shows an anchor earth retaining structure according to a conventional earth anchor construction method.
FIG. 2 illustrates a concrete block anchor earth retaining structure according to an embodiment of the present invention.
FIGS. 3A and 3B illustrate anchor fixing blocks of an anchor earth retaining structure of a concrete block fixing type according to an embodiment of the present invention.
FIG. 4 illustrates an example of the installation of a concrete block fixing type anchor earth retaining structure according to an embodiment of the present invention.
FIG. 5 illustrates a method of constructing a concrete block anchor earth retaining structure according to an embodiment of the present invention.
FIG. 6 illustrates an exemplary structural dynamic behavior of a concrete block anchor earth retaining structure according to an embodiment of the present invention.
FIGS. 7A and 7B illustrate an installation example of a concrete block fixing type anchor earth retaining structure according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive. In addition, embodiments of the present invention will be described below, but the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art. For the sake of convenience described below, the directions of the up, down, left, and right directions are based on the drawings, and the scope of rights of the present invention is not necessarily limited to those directions.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "indirectly connected" . Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements.

FIG. 2 illustrates a concrete block fixing anchor earth retaining structure according to an embodiment of the present invention, and FIGS. 3A and 3B show anchor fixing blocks of an anchor earth retaining structure according to an embodiment of the present invention .

2 to 3, the concrete block fixing anchor earth retaining structure according to an embodiment of the present invention includes an earth retaining wall 110, an anchor fixing block 120, an anchor 130, a support 140, Block 150 and a horizontal support beam 160. [

The earth retaining wall 110 may be vertically installed to closely contact the side wall of the excavation area to support the side wall. The earth retaining wall 110 may be composed of a soldier pile (or a thumb pile) and an earth retaining plate. That is, for example, the earth retaining wall 110 may include a plurality of retaining plates disposed in a multi-stage manner between a plurality of support columns (for example, steel such as H-beams) embedded at a predetermined distance along the side wall of the excavation region And can be installed by being stacked.

The anchor fixing block 120 may be installed in the ground so as to be spaced apart from the back surface of the earth retaining wall 110 vertically installed in the excavation area (i.e., the side contacting the side wall of the excavation area). As will be described below, the anchor fixing block 120 may serve to install and fix the anchor tensile member 132 of the anchor 130.

3, the anchor fixing block 120 includes at least one support surface 122, 124 which is in close contact with the ground and is supported horizontally and / or vertically by the ground, and an anchor tensile member 132 And an anchor fusing surface 126 through which at least one anchor insertion hole 128 is perforated for extension. For example, the anchor fixing block 120 may include a first support surface 122 horizontally supported by the ground and a second support surface vertically supported by the ground, wherein the anchor fixing block 120 is placed on the ground. 124, and an anchor fixing surface 126 may be formed in the shape of a lower sloped slope at one side edge of the upper side. In one embodiment, the anchor fusing surface 126 may include two or more tapered regions having different taper angles. That is, for example, the anchor fusing surface 126 may be different from the anchor fuselage 132 in response to the tensile angle of the anchor tensile member 132, such that each anchor tensile member 132 may be tensioned and fixed perpendicularly to the anchor fusing surface 126 It may be configured to include at least two inclined regions having inclined angles. At this time, an anchor insertion hole 128 for inserting the anchor tensile material 132 may be formed in each of the inclined areas.

In one embodiment, the anchor fusing block 120 may be manufactured in the form of a precast concrete. In other words, the anchor fixing block 120 can be manufactured in the factory and transferred to the construction site before the precast concrete block after the size and the reinforcement of the block are determined so as to sufficiently resist the anchor tensile force through the structural calculation . Accordingly, it is possible to further shorten the time required to manufacture the anchor fixing block 120, and to reuse the anchor fixing block 120 in other construction sites. However, the present invention is not limited thereto. For example, the anchor fixing block 120 may be implemented as a spotting concrete manufactured at a construction site.

The anchor 130 can support the ground by closely adhering the earth retaining wall body 110 to the side wall of the excavation area. To this end, the anchor 130 may include an anchor tensile member 132, a block fixation member 134, and a wall fixation member 136.

Both ends of the anchor tensile material 132 may be fixed to the anchor fixing block 120 and the anchor fixing block 120 to provide a tensile force to support the anchor fixing block 120. The anchor tension member 132 may be composed of, for example, a plurality of PC steel strands (PC-STRANDS), but is not limited thereto.

The block fixing member 134 is for fixing the anchor tensile member 132 to the anchor fixing block 120 and includes a wedge, an anchor head, an anchor casting, a sheath, etc. . For example, after the tensile anchor tensile member 132 is inserted through the anchor insertion hole drilled in the anchor fixing block 120 to the earth retaining wall body 110, the anchor fixing block 120 is provided with an anchor head, By being fixed by the fixing member 134, one end of the anchor tensile member 132 can be fixed to the anchor fixing block 120.

The wall fixing member 136 can fix the other end of the anchor tensile material 132 passing through the earth retaining wall body 110 to the front surface of the earth retaining wall body 110. The wall fixing member 136 may be composed of a platen and a fixture which can be inserted and / or fixed to a plurality of steel wires constituting the anchor tensile member 132, respectively, as used in a conventional earth anchor construction. For example, the other end of the anchor tensile member 132 passing through the retaining wall 110 may protrude outward through the below-described fastening bracket 144, and the wall fixing member 136 may be inserted into the fastening bracket 144, The anchor tensile member 132 may be fixed to the earth retaining wall body 110 by engaging with an inclined surface of the anchor tensile member 144.

The supporting body 140 includes a supporting bracket 142 and a fastening bracket 144 for fixing the anchor tensile material 132 to the earth retaining wall body 110 together with the wall fixing member 136 of the anchor 130 can do.

The support bracket 142 is fixedly coupled to the support column of the earth retaining wall body 110 to support the support bracket 144. The fastening brackets 144 may be configured to engage the anchor tensile members 132 and be disposed between the support brackets 142 or between the support brackets 142 to support the tensile force of the anchor tensile members 132 . At least one surface exposed to the outside of the fastening bracket 144 may be formed as an inclined surface to facilitate engagement of the anchor tensile material 132 and increase the binding force.

The cap block 150 may be laid on the top exposed to the ground of the earth retaining wall body 110. For example, at the top of at least one of the supporting pillars of the earth retaining wall 110 of the cap block 150. The cap block 150 is installed, for example, at the upper end of a plurality of support columns constituting the earth retaining wall body 110 to integrate the support columns and to connect the support columns to the horizontal support beams 160 Can be performed. Further, as described below, a horizontal support beam 160 is connected between the cap block 150 and the anchor fixing block 120.

The horizontal support beams 160 are connected to the opposite surfaces of the anchor fixing block 120 and the cap block 150 at both ends to serve as a timbering support for supporting the retaining wall 110 horizontally At the same time, it can play a role of supporting the horizontal force when the anchor tensile material 132 is tensioned. For example, the horizontal support beam 160 may be connected to one side of the first support surface 122 of the anchor fixing block 120 and the opposite side of the cap block 150, respectively. The horizontal support beam 160 may be made of a steel material such as an H-beam, but is not limited thereto.

FIG. 4 illustrates an example of the installation of a concrete block fixing type anchor earth retaining structure according to an embodiment of the present invention.

Referring to FIG. 4, in the anchor earth retaining structure according to an embodiment of the present invention, the anchor fixing block 120 may be installed outside the potential slip surface of the ground. In this case, the virtual activity failure surface is a surface having the minimum safety factor of the excavated ground. For example, at the excavation floor, an angle of 45 degrees +? / 2 at a horizon extending from the excavation floor, (Φ: internal friction angle of the ground). Anchor fixation block 120 may preferably be installed outside of a point that is further spaced by 0.15 H (H: depth of excavation floor) in this virtual active failure surface.

The horizontal support beam 160 connecting the anchor fixing block 120 and the cap block 150 may be installed between the anchor fixing block 120 and the cap block 150. Accordingly, the first support surface 122 of the anchor fixing block 120 can be horizontally supported by the horizontal support beam 160 and the ground.

Further, in one embodiment, the anchor 130 may be composed of one or more, as shown in Fig. That is, for example, the anchor 130 may include a first anchor 130-1 and a second anchor 130-2, which are inclined downward at different angles with respect to the horizontal plane. In this case, the anchor fixing holes 126 corresponding to the first anchor 130-1 and the second anchor 130-2 may be formed in the anchor fixing surface 126 of the anchor fixing block 120. The anchor tensile members 132 of the first anchor 130-1 and the second anchor 130-2 extend from the anchor fixing block 120 to the earth retaining wall body 110 at different angles through the anchor insertion holes . The anchor tensile members 132 of the first anchor 130-1 and the second anchor 130-2 are sequentially spaced apart from each other in the up and down direction of the earth retaining wall 110. At this time, The interval h1 between the fixing points of the first anchor 130-1 and the fixing point of the second anchor 130-2 from the fixing point of the first anchor 130-1 and the distance h2 between the fixing points of the first anchor 130-1 and the second anchor 130-2, May be implemented to be 2 to 3 meters.

FIG. 5 illustrates a method of constructing a concrete block anchor earth retaining structure according to an embodiment of the present invention.

In step S510, the earth retaining wall body 110 may be installed in close contact with the side wall of the excavation area. That is, for example, the earth retaining wall body 110 is installed in such a manner that a plurality of support pillars (soldier piles or thumb piles) are buried in the excavation area and the earth retaining plates are stacked in multiple stages between the support pillars after the excavation work .

Next, in step S520, the anchor fixing block 120 may be installed in the ground in a direction away from the back surface of the earth retaining wall 110. [ At this time, the anchor fixing block 120 may be installed outside the virtual action failure surface of the ground.

Next, in step S530, the cap block 150 may be installed on the upper end of the earth retaining wall 110. FIG. As described above, the cap block 150 is installed on the upper ends of the plurality of support columns constituting the earth retaining wall 110 to integrate the support pillars and to connect the support pillars to the horizontal support beams 160 Can be performed. Although FIG. 2 illustrates that step S530 is performed after step S520, the present invention is not limited thereto, and step S530 may be performed before step S520 according to an embodiment.

Then, in step S540, a horizontal support beam 160 may be connected between the anchor fixing block 120 and the cap block 150. [ As described above, the horizontal support beam 160 is made of a steel material such as an H-beam, for example, to serve as a support for horizontal support of the earth retaining wall 110, (S570) to support the horizontal force.

In step S550, at least one anchor insertion hole from the anchor fixing block 120 to the earth retaining wall 110 may be formed. That is, for example, starting from the anchor fixing surface 126 of the anchor fixing block 120, the downwardly inclined anchor insertion hole may be formed to penetrate to the front surface of the earth retaining wall body 110 at different angles.

Next, in step S560, the anchor tensile material 132 may be inserted into the anchor insertion hole, and one end of the anchor tensile material 132 may be fixed to the anchor fixing block 120. [ Specifically, after the anchor tensile member 132 is inserted from the anchor fixing surface 126 of the anchor fixing block 120 to the earth retaining wall body 110 through the anchor insertion hole, the block fixing member 134 The anchor tensile member 132 may be fixed to the anchor fixing surface 126 of the anchor fixing block 120 through the through holes.

Then, in step S570, the anchor tensile material 132 may be pulled and fixed to the entire surface of the earth retaining wall 110. [ For example, a supporting body 140 is installed on a support column of the earth retaining wall body 110, and an anchor tensile member 132 exposed through the entire surface of the earth retaining wall body 110 is pulled, May be configured to secure the anchor tensile material (132) to the entire surface of the earth retaining wall (110) by bonding to the support (140).

5, steps S560 and S570 are sequentially performed. However, according to the embodiment, steps S560 and S570 may be performed at least partially. That is, for example, the anchor tensioning member 132 is tensioned by using a tension jack in the anchor fixing block 120, and the both ends of the anchor tensioning member 132 are tensioned through the block fixing member 134 and the wall fixing member 136, May be configured to be fixed to the anchor fixing block 120 and the earth retaining wall body 110 at the same time.

Also, although not shown in FIG. 5, in one embodiment, the method of construction 500 may further include the step of reinforcing the ground for installation of anchor fixing block 120 before step S520. Particularly, when the ground at the location where the anchor fixing block 120 is installed corresponds to the soft ground, the soft ground can be replaced (or replaced) with a rubble, or by installing one or more files, Can be reinforced.

6 illustrates an exemplary structural dynamics of an anchor earth retaining structure according to an embodiment of the present invention.

6, in the anchor earth retaining structure according to an embodiment of the present invention, the horizontal earth pressure on the back surface of the earth retaining wall 110 is suitably divided by the horizontal support beam 160 and the at least one anchor 130, Thereby effectively supporting the wall 110 and the ground.

The horizontal component and the vertical component are generated by the tensile force of the anchor 130. The vertical component of the vertical component is applied to the lower surface of the second support surface 124 of the anchor fixing block 120 The horizontal component of the horizontal support beam 160 and the anchor fixing block 120 are set so that the passive earth pressure of the first support surface 122 of the anchor fixing block 120 is higher than that of the first support surface 122 of the anchor fixing block 120, Earth Pressure).

FIGS. 7A and 7B illustrate an installation example of a concrete block fixing type anchor earth retaining structure according to an embodiment of the present invention.

7A and 7B, the concrete block fixing anchor earth retaining structure according to an embodiment of the present invention may be installed on four side walls (i.e., excavation surfaces) along an excavation area for underground construction . Accordingly, as shown in the figure, the anchor earth retaining structure according to the present invention is configured to surround the excavation region in four directions.

At this time, the retaining wall body 110, the anchor fixing block 130, and the cap block 150 provided on the respective side walls may be extended in the horizontal direction corresponding to the width of the side wall. A plurality of anchors 130 are horizontally spaced and fixed to the anchor fixing block 120 and a plurality of horizontal supporting beams 160 are provided between the cap block 150 and the anchor fixing block 120. [ Are spaced apart from each other in the horizontal direction, thereby stably supporting the side walls of the excavation area.

In this case, the cap block 150 can integrally connect the plurality of support columns provided to one side wall, and can connect the horizontal support beams 160 to the support columns. As described above.

As described above, an optimal embodiment has been disclosed in the drawings and specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

110: earth retaining wall 120: anchor fixing block
122: first supporting surface 124: second supporting surface
126: anchor fixing surface 128: anchor insertion hole
130, 130-1, 2: anchor 132: anchor tensile member
134: block fixing member 136: wall fixing member
140: support body 142: support bracket
144: fastening bracket 150: cap block
160: horizontal support beam

Claims (10)

Anchor earth retaining structure,
An earth retaining wall vertically installed to be in close contact with a sidewall of the excavation area;
An anchor fixing block spaced apart from the retaining wall and installed in the ground;
An anchor including an anchor tensile material penetrating through the ground from the anchor fixing block and tilted downwardly and fixed to the earth retaining wall;
A cap block installed at an upper end of the earth retaining wall; And
And a horizontal support beam for horizontally supporting the earth retaining wall by interconnecting the cap block and the anchor fixing block and supporting a horizontal force when the anchor tension member is tensioned,
Wherein the anchor tensile members of each of the anchors are pulled at different angles from the anchor fixing block to be sequentially spaced apart from the cap block at a predetermined interval on the front surface of the earth retaining wall,
Wherein the anchor fixing block includes at least one support surface which is horizontally or vertically supported in close contact with the ground and an anchor fixing surface formed of an inclined surface in which at least one anchor insertion hole for insertion of the base anchor tensile material is perforated, Retaining structure. The method according to claim 1,
The anchor may include an anchor tensile material; A block fixing member fixing one end of the anchor tensile member to the anchor fixing block; And; And a wall fixing member for fixing the other end of the anchor tensile material penetrating the earth retaining wall to the front surface of the earth retaining wall. The method according to claim 1,
Wherein the anchor fixing block is installed outside the virtual action failure surface of the ground. The method according to claim 1,
Wherein the anchor fixing block is formed of a cast concrete or a precast concrete. delete delete The method according to claim 1,
Wherein the spacing of the plurality of anchor tensile members is 2 to 3 meters. A method of constructing an anchor earth retaining structure,
Installing an earth retaining wall in close contact with a sidewall of the excavation area;
Installing an anchor fixing block in the ground away from the earth retaining wall;
Installing a cap block on an upper end of the earth retaining wall;
Connecting the cap block and the anchor fixing block to each other to provide a horizontal support beam for supporting the earth retaining wall;
Drilling at least one anchor insertion hole downwardly inclined at a different angle from the anchor fixing block through the ground to the earth retaining wall;
Inserting an anchor tensile material from the anchor fixing block to the earth retaining wall through the anchor inserting hole and fixing one end of the anchor tensile material to the anchor fixing block; And
And anchoring the anchor tensile material and fixing the other end of the anchor tensile material penetrating the earth retaining wall to the entire surface of the earth retaining wall,
Wherein the anchors are tensioned at different angles from the anchor fixing blocks in the step of fixing the other end of the anchor tensile material to the front surface of the earth retaining wall, Are sequentially spaced apart from the cap block at predetermined intervals,
The step of securing the other end of the anchor tensile material to the front surface of the earth retaining wall may be performed after the step of installing the horizontal support beam such that the horizontal support beam supports the horizontal force during tensioning of the anchor tensile material,
Wherein the anchor fixing block includes at least one support surface which is in close contact with the ground and is supported horizontally or vertically and an anchor fixing surface formed of an inclined surface and in which at least one of the anchor insertion holes is inserted for insertion of the anchor tensile material, Construction method. delete 9. The method of claim 8,
Further comprising reinforcing the ground for installation of the anchor fixing block,
Wherein reinforcing the ground is performed by replacing the soft ground or piling the pile.

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