KR20230030560A - Thumb pile using upper cap-type guide bracket and ground anchor and method of constructing temporary retaining facility using the same - Google Patents

Abstract

The present invention relates to a thumb pile using an upper cap type guide bracket and a ground anchor and a method for constructing a temporary earth retaining facility using the same, which improve workability. The thumb pile comprises: a pile formed in a predetermined shape; an upper cap fixedly installed to partially surround an upper end of a pile; an upper cap type guide bracket coupled across a lower end of the upper cap; and a ground anchor.

Description

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 for constructing a retaining facility using the same. A guide bracket is installed, and after fixing the tension member of the ground anchor on the upper cap-type guide bracket, a separate support member is installed on the excavation side by applying a load on the rear side to the head of the pile by tensioning the tension member in the excavation direction. Thumb piles using upper cap-type guide brackets and ground anchors that not only eliminate the risk of piles falling into the excavation space or collapse without the It relates to the construction method of the temporary retaining facility used.

For the construction of underground structures, earth retaining structures are installed around the work area, which include thumb pile earth walls, diaphragm walls, sheet piles, C.I.P. A variety of techniques are being applied.

Such a conventional earth retaining method has the following problems.

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

However, in the above-described earth anchor construction method, the earth anchor is established by inserting the adjacent site by 10M or more, but when the use of the adjacent site is restricted, strut or raker method must be applied at every 2.5m excavation height, which is economical and construction conditions. There is a big downside.

In addition, the conventional method using struts and anchor holes densely installs struts at intervals of 2 to 3 m in the vertical direction of the excavation, resulting in a narrow working space and inconvenience in using heavy equipment. There are problems that cause considerable difficulties in construction due to invasion of private land, damage to existing structures, and inflow of nearby underground water.

Registered Patent No. 10-1498711

Accordingly, the present invention has been made to solve the above problems, and 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 fixing it, by tensioning the tension member in the front direction of the excavation and applying a load on the back side to the head of the pile, there is no risk of the pile falling into the excavation space or collapsing without installing a separate support material on the excavation side Thumb piles using top cap-type guide brackets and ground anchors and earth retaining using them to build temporary earth retaining facilities regardless of the widening of the ground site on the back side of the pile even in a narrow space in the downtown area, as well as before and after excavation Its 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 for achieving the above object is a pile made of a predetermined shape; An upper cap fixedly installed in a form surrounding a certain portion of the upper end of the pile; an upper cap-type guide bracket coupled across the lower end of the upper cap; It is characterized in that the upper cap-type guide bracket is composed of a ground anchor in which one side of the tension member is wound and the other side is fixed to the ground at the same time.

In addition, the method for constructing a retaining facility using a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention for achieving the above object is a pile made of a predetermined shape; An upper cap fixedly installed in a form surrounding a certain portion of 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 temporary retaining facilities using an upper cap-type guide bracket composed of a ground anchor in which one side of the upper cap-type guide bracket is wound and the other side is fixed to the ground at the same time, and a thumb pile using a ground anchor, the ground having a certain diameter And excavating to a depth to form a drilling hole; Inserting and fixing a ground anchor into the drilling hole; Inserting a thumb stake using an upper cap-type guide bracket and a ground anchor into the drilled hole; Fixing the tension member installed on the ground anchor to the upper cap-type guide bracket of the thumb pile using the upper cap-type guide bracket and the ground anchor; It is characterized in that it consists of the step of tensioning the tension member with a constant tension.

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

First, the present invention installs an upper cap on the upper end of the pile, installs an upper cap-type guide bracket on the upper cap, installs a ground anchor tension member on the upper cap-type guide bracket, fixes it to the head of the pile, and then tensions the tension member. 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 into the excavation space or collapsing without installing a separate support material on the excavation side.

Second, the present invention has the effect of constructing a retaining facility regardless of the wide narrowing of the ground site on the back side of the pile even in a narrow space in the downtown area, regardless of before and after excavation.

Thirdly, in the present invention, the ground anchor is installed at a depth deeper than the pile, and the tension member coupled with the ground anchor tensions the head of the pile to the outside of the excavation space, so that the pile falls into the excavation space or collapses. There are advantages to solving it.

Fourth, since the present invention can minimize the installation of support materials or wales on the excavation side, it is easy to secure a work space and has an advantage of improving workability.

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;
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;
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;
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;
5 is an exploded perspective view showing a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention;
6 is a perspective view showing an upper cap-type guide bracket of a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention;
7 is a front view showing the upper cap-type guide bracket of the thumb pile using the upper cap-type guide bracket and the ground anchor according to the present invention;
8 is a plan view showing the upper cap-type guide bracket of the thumb pile using the upper cap-type guide bracket and the ground anchor according to the present invention;
9 is a side view showing the upper cap-type guide bracket of the thumb pile using the upper cap-type guide bracket and the ground anchor according to the present invention;
10 is a construction diagram showing a state of constructing a 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 accompanying drawings.

[Thumb stake 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, 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 a cross-sectional view of the present invention It is an exploded perspective view showing a thumb pile using an upper cap-type guide bracket and a ground anchor according to.

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

That is, the thumb pile (P) using the upper cap-type guide bracket and the ground anchor according to the present invention is organically coupled 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 a section steel, an H section, an I section, a c section, a section, a steel pipe, a hollow pipe, a round steel pipe, a rectangular pipe, and a section.

In particular, the section steel is a general term for long steel pre-formed into a certain cross-sectional shape such as H-type and L-type, and is mainly used for civil engineering, architectural pillars or beams, foundation piles and mechanical products, and there are various types of section steel depending on the shape of the cross section. , depending on the epidemiological rationality and purpose of use.

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

Here, the part corresponding to the horizontal bar in the center of the H-beam is called the web, and the part corresponding to the vertical bar on both sides is called the upper and lower flanges. .

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 to the end, the tip of the upper and lower flanges are not rounded, and in the I-beam, the width is smaller than the height H-beams are different in that some have width equal to height.

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

Standards are specified in KS D 3503, and shapes and dimensions are specified in KS D 3051.

On the other hand, the steel pipe is a building material made of an alloy of iron and carbon, and means that the cross section is a hollow circular pipe or rectangular pipe, and it is revealed that a square pipe and pipes of various shapes can be used as needed.

In particular, it is clarified that no special technical requirements are required in using circular tubes as various tubes such as square tubes and closed tubes.

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

Three upper caps 200 are used in the present invention, and the number is not limited, and is bolted together at a predetermined interval from the upper end of the pile 100, and is disposed under the upper cap type. It serves 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 fixing pulley 320 coupled to the reinforcing plate 310.

Here, in the upper cap-type guide bracket 300, a reinforcing plate 310 is installed across the lower end of the upper cap 200, 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 while the angle of the tension member 420 is changed by the semicircular fixing pulley 320 .

In addition, the ground anchor 400 includes an anchor body 410 having a constant weight disposed at the lower end; It is composed of a tension member 420 having one side embedded in the anchor body 410 and simultaneously drawing a certain length to 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 coupled.

Here, the anchor body 410 is disposed at the bottom and is a structure having a constant 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 opposite side of the pile 100 in the ground G on the rear side of the pile 100.

It should be noted that the ground anchor 400 may have an inclination angle of 10 ° to 20 ° according to the principle or necessity of being vertical.

In the ground anchor 400 described above, the lower part is fixed to the anchor body 410 in a state in which tension is introduced into the tension member 420, and the upper part is fixed to the upper cap 200 of the pile 100 through the upper cap-type guide bracket 300. ) is settled in

Here, a straight ground activity 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 anchor body 410 of is installed in a deeper position (stable area) than the ground activity 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 extends upward in a state inclined at a predetermined angle of 10 ° to 20 ° from the ground on the rear side of the pile 100 to the pile 100 side or in a vertical state and a 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 taking the reaction force in the vertical direction and the reaction force in the horizontal direction to the ground G through the upper cap-type guide bracket 300.

As a result, since the load in the direction in which the pile 100 collapses to the back side ground G acts on the pile 100, the moment and deformation in the direction in which the pile 100 collapses in the excavation area are alleviated and 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 the ground anchor according to the present invention having the configuration as described above installs the ground anchor 400 on the back side ground (G) of the pile 100, and the pile ( 100) is installed on the upper end of the upper cap 200, the upper cap-type guide bracket 300 is installed across the upper cap 200, and the tension member of the ground anchor 400 is installed on the upper cap-type guide bracket 300. After fixing by installing the 420, the tension member 420 is tensioned to apply a load on the back side to the head of the pile 100, so that the pile 100 can be moved without installing a separate support material on the excavation side. Not only is there no fear of falling or collapsing into the digging space, but it also has the effect of facilitating the excavation work safely at low cost even in a narrow space in the downtown area.

[Construction method of temporary earth retaining facility]

10 is a construction diagram showing a state of constructing a 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 for constructing a retaining facility using a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention comprises a pile 100 having a predetermined shape; An upper cap 200 fixedly installed in a form surrounding a certain portion of the upper end of the pile 100; an upper cap-type guide bracket 300 coupled across the lower end of the upper cap 200; An upper cap-type guide bracket 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 a thumb pile (P) using a ground anchor As a method of constructing temporary earth retaining facilities using,

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

Step of inserting and settling the ground anchor 400 in the drilling hole;

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

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 a step of tensioning the tension member 420 with a constant tension.

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 activity line (L) of the back side ground (G) of the pile (100).

That is, the method for constructing a retaining facility using a thumb pile using an upper cap-type guide bracket and a ground anchor according to the present invention excavates the ground (G) by an excavator such as an auger to form a drilling hole, and cement milk is applied to the drilling hole After filling and fixing the ground anchor 400 before the cement milk hardens, the pile 100 to which the upper cap-type guide bracket is attached is inserted into the drilled hole to a predetermined depth, and the tension member of the ground anchor 400 After fixing the 420 by hooking it 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 a tension force In the state It is fixed 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 turned to a horizontal state in the semicircular fixing pulley 320 of the upper cap-type guide bracket 300 installed on the pile 100.

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

Therefore, the ground that prevents the pile 100 from collapsing into the excavation area of the pile 100 by applying a horizontal force to the head of the pile 100 regardless of the light narrowing of the ground G on the back side 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 to 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 and after excavation 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 for constructing a retaining facility using a thumb stake using an upper cap-type guide bracket and a ground anchor according to the present invention consisting of the steps as described above is to drill the ground (G) to form a perforation hole, and the upper cap-type guide bracket in the perforation hole After inserting the thumb pile (P) using the ground anchor and fixing it with cement milk, fixing the tension member 420 installed on the ground anchor 400 to the upper cap-type guide bracket 300, the tension member 420 By tensioning with a constant tension force and applying a load to the back side ground G on the head of the pile 100, the pile 100 falls into the excavation space or collapses without installing a separate support material on the excavation side. Not only is there no concern, but it is possible to safely and easily excavate in a narrow space in the city center at low cost.

In addition, the ground anchor 400 is installed at a depth deeper than the pile 100, and the tension member 420 coupled with the ground anchor 400 tensions the head of the pile 100 to extend it to the outside of the excavation space, There is an advantage in that concerns such as the pile 100 falling or collapsing into the excavation space can be eliminated.

In addition, since the installation of supports or wales on the excavation side can be minimized, it is easy to secure a working space and has the advantage of improving workability.

Preferred embodiments described in the detailed description of the present invention are illustrative and not limiting, the scope of the present invention is shown by the appended claims, and all modifications that fall within the meaning of those claims do not apply to the present invention. will be included

100: pile 120: web
130: flange 200: upper cap
210: horizontal plate 220: vertical plate
300: upper cap type guide bracket 310: reinforcing plate
320: semicircular fixing pulley 400: ground anchor
410: anchor body 420: tension member
G: ground L: ground action line
P: Thumb pile using top cap type guide bracket and ground anchor

Claims (8)

A pile 100 made of a predetermined shape;
An upper cap 200 fixedly installed in a form surrounding a certain portion of the upper end of the pile 100;
an upper cap-type guide bracket 300 coupled across the lower end of the upper cap 200;
Characterized in that the upper cap-type guide bracket 300 is composed of a ground anchor 400 in which one side of the tension member 420 is wound and the other side is fixed to the ground (G), and a thumb pile using the upper cap-type guide bracket and the ground anchor . According to claim 1,
The pile 100 is a thumb pile using an upper cap-type guide bracket and a ground anchor, characterized in that it is composed of any one of a section steel and a steel pipe. According to claim 1,
The upper cap 200 includes a horizontal plate 210 made of a steel plate having a certain width and length; A thumb pile using an upper cap-type guide bracket and a ground anchor, characterized in that it consists of a vertical plate 220 bent at right angles on both sides of the horizontal plate 210. According to claim 1,
The upper cap-type guide bracket 300 includes a reinforcing plate 310 having a certain thickness and width; A thumb pile using an upper cap-type guide bracket and a ground anchor, characterized in that composed of a semicircular fixing pulley 320 coupled to the reinforcing plate 310. According to claim 1,
The ground anchor 400 includes an anchor body 410 having a constant weight disposed at the lower end; A thumb pile using an upper cap-type guide bracket and a ground anchor, characterized in that it consists of a tension member 420, one side of which is embedded in the anchor body 410 and a certain length is drawn to the other side at the same time. A pile 100 made of a predetermined shape;
An upper cap 200 fixedly installed in a form surrounding a certain portion of the upper end of the pile 100;
an upper cap-type guide bracket 300 coupled across the lower end of the upper cap 200;
An upper cap-type guide bracket 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 a thumb pile (P) using a ground anchor As a method of constructing temporary earth retaining facilities using,
Forming a drilling hole by excavating the ground (G) to a certain diameter and depth;
Step of inserting and settling the ground anchor 400 in the drilling hole;
Inserting a thumb pile (P) using an upper cap-type guide bracket and a ground anchor into the drilled hole;
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;
A method of constructing a retaining facility using a thumb pile using an upper cap-type guide bracket and a ground anchor, characterized in that it consists of the step of tensioning the tension member 420 with a constant tension. According to claim 6,
Earth retaining facility construction method using a thumb pile using an upper cap-type guide bracket and a ground anchor, characterized in that the ground anchor 400 is installed vertically in the same direction as the pile 100. According to claim 6 or 7,
The ground anchor 400 is installed at a position deeper than the ground activity line (L) of the back side ground (G) of the pile (100) Earth retaining facility using a thumb pile using an upper cap-type guide bracket and a ground anchor construction method.

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