KR102587627B1 - Thumb pile using upper cap-type guide bracket and ground anchor and method of constructing temporary retaining facility using the same - Google Patents

Abstract

In the present invention, an upper cap-type guide bracket is installed on the upper end of a pile, a bracket or various types of ground anchors are installed on the rear side of the pile, a tension member is installed and anchored, and the tension member is tensioned in the front direction of the excavation to secure the pile. By applying the load on the back side to the head, there is no risk of the pile falling or collapsing into the excavation space even without installing a separate support material on the excavation side, and the narrow space of the ground on the back side of the pile is maintained even in a narrow space in the city center. The purpose is to provide thumb piles using upper cap-type guide brackets and ground anchors that enable the construction of temporary earth retaining facilities regardless of whether before or after excavation, and a construction method for temporary earth retaining facilities using the same.
A thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention to achieve the above object includes a pile having a predetermined shape; an upper cap fixedly installed to partially surround the upper end of the pile; an upper cap-type guide bracket coupled across the lower end of the upper cap; It is characterized by being composed of a ground anchor in which one side of the tension member is wound around the upper cap-type guide bracket and the other side is fixed to the ground.
In addition, a method of constructing a temporary earth retaining facility using thumb piles using an upper cap-type guide bracket and a ground anchor according to the present invention to achieve the above object includes a pile having a predetermined shape; an upper cap fixedly installed to partially surround the upper end of the pile; an upper cap-type guide bracket coupled across the lower end of the upper cap; A method of constructing a temporary earth retaining facility using a thumb pile using an upper cap-type guide bracket and a ground anchor composed of a ground anchor in which one side of the tension member is wound around the upper cap-type guide bracket and the other side is fixed to the ground, and the ground is of a certain diameter. and forming a drill hole by excavating to a depth; Inserting and anchoring a ground anchor into the drilling hole; Inserting a thumb pile using an upper cap-type guide bracket and a ground anchor into the drilling hole; Fixing the tension member installed on the ground anchor to the upper cap-type guide bracket and the upper cap-type guide bracket of the thumb pile using the ground anchor; It is characterized by tensioning the tension member with a certain tension force.

Description

Thumb pile using upper cap-type guide bracket and ground anchor and method of constructing temporary retaining facility using the same {Thumb pile using upper cap-type guide bracket and ground anchor and method of constructing temporary retaining facility using the same}

The present invention relates to a thumb pile using an upper cap-type guide bracket and a ground anchor, and a method of constructing a temporary earth retaining facility using the same. In particular, a bracket or various types of ground anchors are installed in the ground on the back side of the pile, and an upper cap-type anchor is installed at the upper end of the pile. A guide bracket is installed, and after fixing the tension member of the ground anchor to the upper cap-type guide bracket, the tension member is tensioned in the excavation direction to apply a load on the back side to the head of the pile, thereby installing a separate support member on the excavation side. There is no risk of the pile falling or collapsing into the excavation space without doing so, and thumb piles using an upper cap-type guide bracket and ground anchor are used to enable excavation work to be done safely and easily at low cost even in narrow spaces in urban areas. This relates to the construction method of temporary earth retaining facilities used.

For the construction of underground structures, earth retaining structures are installed surrounding the work area, which include thumb pile earth walls, diaphragm walls, sheet piles, and C.I.P. Various construction methods are being applied.

This conventional earth retaining method has the following problems.

When carrying out excavation work, a retaining wall alone cannot resist the earth pressure of the background soil, so a large number of support materials (Strut, Earth Anchor, Raker, etc.) must be used to reinforce it.

However, the above-mentioned earth anchor method involves anchoring an earth anchor by digging into the adjacent site more than 10m, but when the use of the adjacent site is restricted, the strut or raker method has no choice but to be applied every 2.5m of excavation height, which is difficult to achieve due to economic feasibility and construction conditions. There is a huge disadvantage.

In addition, the conventional method using braces and anchor holes tightly installs braces at intervals of 2 to 3 m in the vertical direction of the excavation, which narrows the work space and causes inconvenience in the use of heavy equipment. In addition, when anchors are used, it is difficult to use heavy equipment in urban excavations. There are problems causing significant difficulties in construction due to invasion of private land, damage to existing structures, and inflow of nearby groundwater.

Registered Patent 10-1498711

Accordingly, the present invention was developed to solve the problems described above. An upper cap-type guide bracket is installed on the upper end of the pile, a bracket or various types of ground anchors are installed on the rear side of the pile, and a tension member is installed. After settling, the tension member is tensioned in the front direction of the excavation to apply a load on the back side to the head of the pile, thereby reducing the risk of the pile falling or collapsing into the excavation space even without installing a separate support material on the excavation side. Thumb piles using upper cap-type guide brackets and ground anchors, which are not only independent of the narrowness of the ground site on the back side of the pile even in narrow spaces in urban areas, but also allow the construction of temporary earth retaining facilities regardless of before or after excavation, and earth retaining using the same. The purpose is to provide temporary facility construction methods.

A thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention to achieve the above object includes a pile having a predetermined shape; an upper cap fixedly installed to partially surround the upper end of the pile; an upper cap-type guide bracket coupled across the lower end of the upper cap; It is characterized by being composed of a ground anchor in which one side of the tension member is wound around the upper cap-type guide bracket and the other side is fixed to the ground.

In addition, a method of constructing a temporary earth retaining facility using thumb piles using an upper cap-type guide bracket and a ground anchor according to the present invention to achieve the above object includes a pile having a predetermined shape; an upper cap fixedly installed to partially surround the upper end of the pile; an upper cap-type guide bracket coupled across the lower end of the upper cap; A method of constructing a temporary earth retaining facility using a thumb pile using an upper cap-type guide bracket and a ground anchor composed of a ground anchor in which one side of the tension member is wound around the upper cap-type guide bracket and the other side is fixed to the ground, and the ground is of a certain diameter. and forming a drill hole by excavating to a depth; Inserting and anchoring a ground anchor into the drilling hole; Inserting a thumb pile using an upper cap-type guide bracket and a ground anchor into the drilling hole; Fixing the tension member installed on the ground anchor to the upper cap-type guide bracket and the upper cap-type guide bracket of the thumb pile using the ground anchor; It is characterized by tensioning the tension member with a constant tension force.

As described above, the thumb pile using the upper cap-type guide bracket and ground anchor according to the present invention and the temporary earth retaining facility construction method using the same have the following effects.

First, in the present invention, an upper cap is installed on the upper end of a pile, an upper cap-type guide bracket is installed on the upper cap, a tension member of a ground anchor is installed on the upper cap-type guide bracket and anchored to the head of the pile, and then the tension member is tensioned. By applying a load on the back side to the head of the pile, there is an advantage that there is no risk of the pile falling or collapsing into the excavation space even without installing a separate support material on the excavation side.

Second, the present invention has the effect of constructing a temporary earth retaining facility regardless of the narrowness of the ground site on the back side of the pile even in a narrow space in the city center, regardless of before or after excavation.

Third, in the present invention, the ground anchor is installed at a deeper depth than the pile, and the tension member combined with the ground anchor tensions the head of the pile to the outside of the trench space, thereby eliminating concerns about the pile falling or collapsing into the trench space. There is an advantage to solving this problem.

Fourth, the present invention has the advantage of minimizing the installation of support materials or strips on the excavation side, which not only makes it easier to secure work space but also improves workability.

Figure 1 is a perspective view showing a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention;
Figure 2 is a front view showing a thumb pile using an upper cap-type guide bracket and ground anchor according to the present invention;
Figure 3 is a plan view showing a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention;
Figure 4 is a cross-sectional view showing a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention;
Figure 5 is an exploded perspective view showing a thumb pile using an upper cap-type guide bracket and ground anchor according to the present invention;
Figure 6 is a perspective view showing the upper cap type guide bracket of the thumb pile using the upper cap type guide bracket and ground anchor according to the present invention;
Figure 7 is a front view showing the upper cap type guide bracket of the thumb pile using the upper cap type guide bracket and ground anchor according to the present invention;
Figure 8 is a plan view showing the upper cap type guide bracket of the thumb pile using the upper cap type guide bracket and ground anchor according to the present invention;
Figure 9 is a side view showing the upper cap type guide bracket of the thumb pile using the upper cap type guide bracket and ground anchor according to the present invention;
Figure 10 is a construction diagram showing the state of constructing a temporary earth retaining facility using a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the attached illustration drawings.

[Thumb pile using upper cap type guide bracket and ground anchor]

Figure 1 is a perspective view showing a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention, Figure 2 is a front view showing a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention, and Figure 3 is a plan view showing a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention, Figure 4 is a cross-sectional view showing a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention, and Figure 5 is a diagram showing the present invention. This is an exploded perspective view showing a thumb pile using an upper cap-type guide bracket and ground anchor.

As shown in these drawings, the thumb pile (P) using an upper cap-type guide bracket and a ground anchor according to the present invention includes a pile (100) having a predetermined shape; An upper cap 200 fixedly installed to partially surround the upper end of the pile 100; an upper cap-type guide bracket (300) coupled across the lower end of the upper cap (200); It consists of a ground anchor 400 in which one side of the tension member 420 is wound around the upper cap-type guide bracket 300 and the other side is fixed to the ground (G).

That is, the thumb pile (P) using the upper cap-type guide bracket and ground anchor according to the present invention is organically combined with the pile (100), the upper cap (200), the upper cap-type guide bracket (300), and the ground anchor (400). It is a structure made up of

Here, the pile 100 is composed of any one of section steel, H-beam steel, I-beam, U-beam, A-beam, steel pipe, hollow pipe, round steel pipe, square pipe, and section steel.

In particular, the section steel is a general term for long steel pre-formed into a certain cross-sectional shape such as H-type or L-type. It is mainly used in civil engineering, architectural columns or beams, foundation piles and mechanical products, etc. There are various section steels depending on the shape of the cross section. , it is used according to epidemiological rationality and purpose of use.

In addition, the H-beam steel is a section steel with an H-shaped cross section that is widely used in the framing of large structures such as buildings and ships or in civil engineering work, and is made by hot rolling.

Here, the part corresponding to the horizontal bar in the center of the H-beam is called the web, and the parts corresponding to the vertical bars on both sides are called the upper and lower flanges. The upper and lower flanges of 300 mm or less are called junior size, and those of 300 mm or more are called senior size. .

In addition, there is an I-beam with a cross section similar to the H-beam. In the H-beam, the thickness of the upper and lower flanges is constant all the way to the end, the ends of the upper and lower flanges are not rounded, and in the I-beam, the width is smaller than the height. The difference in H-beam steel is that the width is the same as the height.

The wider one is called wide flange H-beam steel, and its overall cross-section is square, making it easy to use as a building pillar.

The specifications are specified in KS D 3503, and the shape and dimensions are specified in KS D 3051.

Meanwhile, a steel pipe is a construction material made of an alloy of iron and carbon, meaning that the cross section is a circular pipe or a hollow rectangular pipe. It should be noted that square pipes and pipes of various shapes can be used as needed.

In particular, it should be noted that no special technical requirements are required when using a circular pipe as a variety of pipes such as square pipes and closed bend pipes.

In addition, the upper cap 200 includes a horizontal plate 210 made of a steel plate with a certain width and length; It consists of a vertical plate 220 bent at right angles on both sides of the horizontal plate 210.

In the present invention, three upper caps 200 are used, and there is no limitation on the number. They are simply bolted at a certain distance from the upper end of the pile 100, and are placed at the bottom of the upper cap type. It functions to support the guide bracket (300).

And, as shown in FIGS. 6 to 9, the upper cap-type guide bracket 300 includes a reinforcing plate 310 having a certain thickness and width; It consists of a semicircular fixed pulley 320 coupled to the reinforcement plate 310.

Here, a reinforcing plate 310 is installed across the lower end of the upper cap 200 on the upper cap-type guide bracket 300, and a semicircular fixing pulley 320 is installed on the reinforcing plate 310 to form the semicircular shape. The tension member 420 is caught on the fixing pulley 320 and extends horizontally through the upper cap 200 with the angle of the tension member 420 changed by the semicircular fixing pulley 320.

In addition, the ground anchor 400 includes an anchor body 410 having a certain weight disposed at the bottom; It consists of a tension member 420 that is embedded in one side of the anchor body 410 and at the same time is pulled out to a certain length on the other side.

That is, the ground anchor 400 has a structure in which the anchor body 410 and the tension member 420 are organically combined.

Here, the anchor body 410 is disposed at the bottom and is a structure with a certain weight.

In addition, the tension member 420 is fixed to the semicircular fixing pulley 320 of the upper cap-type guide bracket 300, and the other side is fixed to the anchor body 410 fixed to the ground (G).

The ground anchor 400 is installed vertically or inclined to the ground (G) on the rear side of the pile 100 on the opposite side of the pile 100.

It should be noted that the ground anchor 400 is, in principle, vertical, but the inclination angle may be 10° to 20° if necessary.

The lower part of the ground anchor 400 is fixed to the anchor body 410 with tension applied to the tension member 420, and the upper part is attached to the upper cap 200 of the pile 100 through the upper cap-type guide bracket 300. ) is settled.

Here, a straight ground action line (L) of about 20 to 45° at the depth of the excavation area can be assumed in the ground (G) around the excavation area where the ground anchor 400 is installed. The ground anchor 400 The anchor body 410 is installed in a position (stable area) deeper than the ground action line (L).

Accordingly, the tension force of the ground anchor 400 can be stably exerted.

In addition, the ground anchor 400 to which tension is applied is tilted at a predetermined angle of 10° to 20° from the ground on the back side of the pile 100 toward the pile 100, or is stretched upward in a vertical state and the semicircular fixing pulley 250 ) is bent at an obtuse angle, for example, 100° to 110° and extends toward the upper cap 200 of the pile 100.

Here, the ground anchor 400 applies a horizontal force to the upper cap 200 of the pile 100 by applying a vertical reaction force and a horizontal reaction force to the ground (G) through the upper cap-type guide bracket 300.

As a result, a load in the direction in which the pile 100 falls to the back ground (G) acts on the pile 100, so the moment and deformation in the direction in which the pile 100 falls into the excavation area are alleviated, thereby reducing the excavation area of the pile 100. Falling to the side is prevented.

The thumb pile (P) using the upper cap-type guide bracket and ground anchor according to the present invention configured as described above is installed with the ground anchor (400) on the ground (G) on the rear side of the pile (100), and the pile ( 100), an upper cap 200 is installed at the upper end, an upper cap-type guide bracket 300 is installed across the upper cap 200, and a tension member of the ground anchor 400 is attached to the upper cap-type guide bracket 300. After installing and anchoring (420), the tension member (420) is tensioned to apply a load on the back side to the head of the pile (100), thereby enabling the pile (100) to be excavated without installing a separate support material on the excavation side. Not only is there no risk of falling or collapsing into the digging space, but it also has the effect of enabling easy and low-cost digging work even in narrow spaces in urban areas.

[Construction method for temporary earth retaining facilities]

Figure 10 is a construction diagram showing the state of constructing a temporary earth retaining facility using a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention.

As shown in this figure, the method of constructing a temporary earth retaining facility using thumb piles using an upper cap-type guide bracket and a ground anchor according to the present invention includes a pile (100) having a predetermined shape; An upper cap 200 fixedly installed to partially surround the upper end of the pile 100; an upper cap-type guide bracket (300) coupled across the lower end of the upper cap (200); A thumb pile (P) using an upper cap-type guide bracket and a ground anchor consisting of a ground anchor (400) in which one side of the tension member (420) is wound around the upper cap-type guide bracket (300) and the other side is fixed to the ground (G). As a method of constructing temporary earth retaining facilities using,

Forming a drill hole by excavating the ground (G) to a certain diameter and depth;

Inserting and anchoring a ground anchor (400) into the drilling hole;

Inserting a thumb pile (P) into the drilling hole using an upper cap-type guide bracket and a ground anchor;

Fixing the tension member 420 installed on the ground anchor 400 to the upper cap type guide bracket 300 of the thumb pile (P) using the upper cap type guide bracket and the ground anchor;

It consists of tensioning the tension member 420 with a certain tension force.

Here, the ground anchor 400 is installed vertically in the same direction as the pile 100.

In addition, the ground anchor 400 is installed at a position deeper than the ground action line (L) of the ground (G) on the back side of the pile (100).

That is, the method of constructing a temporary earth retaining facility using thumb piles using an upper cap-type guide bracket and a ground anchor according to the present invention involves excavating the ground (G) using an excavator such as an auger to form a drilling hole, and pouring cement milk into the drilling hole. After filling and fixing the ground anchor 400 before the cement milk hardens, a pile 100 with an upper cap-type guide bracket attached is inserted into the drilling hole to a predetermined depth, and the tension member of the ground anchor 400 After fixing (420) to the semicircular fixing pulley (320) of the upper cap-type guide bracket (300) attached to the upper end of the pile (100), a predetermined force is applied to the tension member (420) to introduce tension. It is anchored to the top of the pile 100 by the upper cap 200.

Here, the ground anchor 400 fixed to the upper cap 200 of the pile 100 is changed to a horizontal state on the semicircular fixing pulley 320 of the upper cap type guide bracket 300 installed on the pile 100.

As a result, it is possible to install the ground anchor 400 to a deep position in the ground G after suppressing the horizontal distance from the pile 100.

Therefore, regardless of the narrowness of the ground (G) on the rear side of the pile 100, a horizontal force is applied to the head of the pile 100 to prevent the pile 100 from falling into the excavation area of the pile 100. It is possible to install the anchor 400.

In addition, in order to connect the ground anchor 400 to the pile 100, it is necessary to expose the surface of the pile 100 by installing the ground anchor 400 on the upper cap-type guide bracket 300 installed on the pile 100. There is no

Therefore, the ground anchor 400 can be installed regardless of before or after excavation is performed in the excavation area.

In addition, as described above, the ground anchor 400 may be inclined to the opposite side of the pile 100 or may be vertical, or the pile 100 itself may be inclined.

The method of constructing a temporary earth retaining facility using thumb piles using an upper cap-type guide bracket and a ground anchor according to the present invention, which consists of the steps described above, involves drilling the ground (G) to form a drilling hole, and placing an upper cap-type guide bracket in the drilling hole. After inserting the thumb pile (P) using a ground anchor and fixing it with cement milk, the tension member 420 installed on the ground anchor 400 is fixed to the upper cap-type guide bracket 300, and then the tension member 420 is By applying a load to the back ground (G) on the head of the pile 100 by tensioning it with a certain tension force, the pile 100 falls or collapses into the excavation space even without installing a separate support material on the excavation side. Not only is there no concern, but excavation work can be done safely and easily at low cost even in narrow spaces in urban areas.

In addition, the ground anchor 400 is installed at a deeper depth than the pile 100, and the tension member 420 combined with the ground anchor 400 tensions the head of the pile 100 to the outside of the digging space, There is an advantage in resolving concerns about the pile 100 falling or collapsing into the excavation space.

In addition, since the installation of support materials or strips on the excavation side can be minimized, it is not only easy to secure work space, but also has the advantage of improving workability.

The preferred embodiments described in the detailed description of the present invention are illustrative and not limiting, and the scope of the present invention is indicated by the appended claims, and all modifications that fall within the meaning of the claims are included in the present invention. It is included.

100: pile 120: web
130: Flange 200: Upper cap
210: horizontal plate 220: vertical plate
300: Upper cap type guide bracket 310: Reinforcement plate
320: semicircular fixed pulley 400: ground anchor
410: anchor body 420: tension member
G: Ground L: Ground activity line
P: Thumb pile using upper cap type guide bracket and ground anchor

Claims (8)

A pile (100) made of a predetermined shape; An upper cap 200 fixedly installed to partially surround the upper end of the pile 100; an upper cap-type guide bracket (300) coupled across the lower end of the upper cap (200); It is composed of a ground anchor 400 in which one side of the tension member 420 is wound around the upper cap-type guide bracket 300 and the other side is fixed to the ground (G), and the pile 100 is composed of a section steel, The upper cap 200 includes a horizontal plate 210 made of a steel plate with a certain width and length; It consists of a vertical plate 220 bent at a right angle on both sides of the horizontal plate 210, and the upper cap 200 is bolted at a certain distance from the upper end of the pile 100, and is attached to the lower part thereof. It supports an upper cap-type guide bracket 300, and the upper cap-type guide bracket 300 includes a reinforcement plate 310 having a certain thickness and width; It consists of a semicircular fixed pulley 320 coupled to the reinforcement plate 310, and a reinforcement plate 310 is installed across the lower end of the upper cap 200 on the upper cap-type guide bracket 300, and the reinforcement plate 310 is connected to the reinforcement plate 310. A semicircular fixing pulley 320 is installed on (310), and the tension member 420 is caught on the semicircular fixing pulley 320, so that the angle of the tension member 420 is changed by the semicircular fixing pulley 320, and the upper cap ( 200) and extends horizontally through the ground anchor 400, including an anchor body 410 having a certain weight disposed at the bottom; It is composed of a tension member 420 that is embedded in one side of the anchor body 410 and has a certain length pulled to the other side at the same time. The anchor body 410 is disposed at the bottom and is composed of a structure with a certain weight, and the tension member 410 (420) is fixed to the semicircular fixing pulley 320 of the upper cap-type guide bracket 300, and the other side is fixed to the anchor body 410 fixed to the ground, and the ground anchor 400 is attached to the pile 100. It is installed on the ground (G) on the back side at a vertical or inclined angle of 10 to 20° on the opposite side of the pile 100, and the ground anchor 400 is an anchor body with the lower part in a state in which tension is introduced to the tension member 420. It is anchored to (410), and the upper part is anchored to the upper cap 200 of the pile 100 through the upper cap-type guide bracket 300, and in the ground (G) around the excavation area where the ground anchor 400 is installed. A straight ground activity line of 20 to 45° is formed at the depth of the excavation area, and the anchor body 410 of the ground anchor 400 is installed at a position deeper than the ground activity line L, and the ground anchor 400 ) to stably exert the tension force, and the ground anchor 400 to which the tension force is applied is tilted at an angle of 10 to 20° from the ground on the back side of the pile 100 toward the pile 100 or in a vertical state. It extends upward and is bent at an obtuse angle of 100 to 110° on the semicircular fixing pulley 250 and extends toward the upper cap 200 of the pile 100, and the ground anchor 400 has an upper cap-type guide bracket 300. By taking the vertical reaction force and the horizontal reaction force to the ground (G), a horizontal force is applied to the upper cap 200 of the pile 100, so that the pile 100 falls to the back ground (G). As the load acts, the moment and deformation in the direction in which the pile 100 falls toward the excavation area are alleviated, and the top cap-type guide bracket and ground anchor are used to prevent the pile 100 from collapsing toward the excavation area. Thumb stake. delete delete delete delete A pile (100) made of a predetermined shape; An upper cap 200 fixedly installed to partially surround the upper end of the pile 100; an upper cap-type guide bracket (300) coupled across the lower end of the upper cap (200); It is composed of a ground anchor 400 in which one side of the tension member 420 is wound around the upper cap-type guide bracket 300 and the other side is fixed to the ground (G), and the pile 100 is composed of a section steel, The upper cap 200 includes a horizontal plate 210 made of a steel plate with a certain width and length; It consists of a vertical plate 220 bent at a right angle on both sides of the horizontal plate 210, and the upper cap 200 is bolted at a certain distance from the upper end of the pile 100, and is attached to the lower part thereof. It supports an upper cap-type guide bracket 300, and the upper cap-type guide bracket 300 includes a reinforcement plate 310 having a certain thickness and width; It consists of a semicircular fixed pulley 320 coupled to the reinforcement plate 310, and a reinforcement plate 310 is installed across the lower end of the upper cap 200 on the upper cap-type guide bracket 300, and the reinforcement plate 310 is connected to the reinforcement plate 310. A semicircular fixing pulley 320 is installed on (310), and the tension member 420 is caught on the semicircular fixing pulley 320, so that the angle of the tension member 420 is changed by the semicircular fixing pulley 320, and the upper cap ( 200) and extends horizontally through the ground anchor 400, including an anchor body 410 having a certain weight disposed at the bottom; It is composed of a tension member 420 that is embedded in one side of the anchor body 410 and has a certain length pulled to the other side at the same time. The anchor body 410 is disposed at the bottom and is composed of a structure with a certain weight, and the tension member 410 (420) is fixed to the semicircular fixing pulley 320 of the upper cap-type guide bracket 300, and the other side is fixed to the anchor body 410 fixed to the ground, and the ground anchor 400 is attached to the pile 100. It is installed on the ground (G) on the back side at a vertical or inclined angle of 10 to 20° on the opposite side of the pile 100, and the ground anchor 400 is an anchor body with the lower part in a state in which tension is introduced to the tension member 420. It is anchored to (410), and the upper part is anchored to the upper cap 200 of the pile 100 through the upper cap-type guide bracket 300, and in the ground (G) around the excavation area where the ground anchor 400 is installed. A straight ground action line of 20 to 45° is formed at the depth of the excavation area, and the anchor body 410 of the ground anchor 400 is installed at a position deeper than the ground action line L, and the ground anchor 400 ) to stably exert the tension force, and the ground anchor 400 to which the tension force is applied is tilted at an angle of 10 to 20° from the ground on the back side of the pile 100 toward the pile 100 or in a vertical state. It extends upward and is bent at an obtuse angle of 100 to 110° on the semicircular fixing pulley 250 and extends toward the upper cap 200 of the pile 100, and the ground anchor 400 has an upper cap-type guide bracket 300. By taking the vertical reaction force and the horizontal reaction force to the ground (G), a horizontal force is applied to the upper cap 200 of the pile 100, so that the pile 100 falls to the back ground (G). Because the load acts, the moment and deformation in the direction in which the pile 100 falls toward the excavation area are alleviated, and a thumb pile (P) using an upper cap-type guide bracket and ground anchor is configured to prevent the pile 100 from falling toward the excavation area. ) as a method of constructing temporary earth retaining facilities using,
Forming a drill hole by excavating the ground (G) with an auger to a certain diameter and depth; Filling the drilling hole with cement milk, inserting and anchoring a ground anchor (400) before the cement milk hardens; Inserting a thumb pile (P) into the drilling hole using an upper cap-type guide bracket and a ground anchor; Fixing the tension member 420 installed on the ground anchor 400 to the upper cap type guide bracket 300 of the thumb pile (P) using the upper cap type guide bracket and the ground anchor; The ground anchor 400 fixed to the upper cap 200 of the pile 100 is changed to a horizontal position on the semicircular fixing pulley 320 of the upper cap type guide bracket 300 installed on the pile 100, thereby anchoring the ground anchor. (400) consists of suppressing the horizontal distance from the pile 100, installing the ground anchor 400 to a deep position in the ground (G), and tensioning the tension member 420 with a constant tension force. The ground anchor 400 is installed vertically in the same direction as the pile 100, and the ground (G) around the excavation area where the ground anchor 400 is installed has an angle of 20 to 45° from the depth of the excavation area. A straight ground action line is formed, and the anchor body 410 of the ground anchor 400 is installed at a position deeper than the ground action line (L). A thumb pile using an upper cap-type guide bracket and a ground anchor is installed. Construction method for temporary earth retaining facilities.
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