KR102661597B1 - Self-supported wall using u-shaped bolt - Google Patents

Abstract

A self-supporting wall using U-shaped bolts is provided. According to embodiments of the present invention, regardless of the type of pile 10a, the tensile force caused by the U-shaped bolt 40 and the tensile force caused by the tension member 50 can be applied equally in directions perpendicular to each other, thereby forming a self-supporting wall. (1) The stability and earth pressure bearing capacity can be improved. Specifically, according to embodiments of the present invention, the tensile force by the U-shaped bolt 40 in the X-axis direction is applied to the wall member 10, and the tensile force by the tension member 50 in the Z-axis direction is applied to the wall member ( 10) is applied. In this case, the tensile force due to the U-shaped bolt 40 and the tensile force due to the tension member 50 act equally in the direction perpendicular to each other, and due to the balance of these forces, the tensile force due to the tension member 50 is applied to the wall member ( 10) can be passed on as is.

Description

Self-supporting wall using U-shaped bolts {SELF-SUPPORTED WALL USING U-SHAPED BOLT}

The present invention relates to a self-supporting wall used as a permanent wall or retaining wall, and more specifically, to a self-supporting wall whose stability and earth pressure bearing capacity are strengthened through U-shaped bolts.

Generally, at civil engineering or building construction sites, a self-supporting wall is installed to prevent soil located on the back side of the excavated soil (i.e., back soil) from flowing into the soil to be excavated (i.e., excavated soil). These self-supporting walls can be used as permanent walls or as earth retaining walls (temporary earth retaining facilities). At this time, an anchor is buried in the lower part of the backsoil, and the tension member is fixed and tensioned by the anchor. In this case, the tensile force caused by the tension member is applied to the self-supporting wall as a bearing force against the back earth pressure.

In addition, recently, a method of supporting the back earth pressure has been proposed by switching the tension members wired parallel to the longitudinal direction of the pile to a direction perpendicular to the longitudinal direction of the pile and then tensioning the tension members on the excavated soil side. However, in order to implement this method, a separate guide bracket is essential for changing the direction of the tension member, and there is a problem in that a loss of tension due to the tension member occurs while the tension member passes through the guide bracket. Accordingly, a method for transmitting the tensile force to the self-supporting wall without loss due to the tension member is required.

Korean Patent Publication No. 10-2382616 (2022.03.30)

The present invention is intended to improve the stability and earth pressure bearing capacity of a self-supporting wall by transmitting the tensile force generated by the tension member to the self-supporting wall without loss.

According to one embodiment, a wall member (10) made of a plurality of piles (10a) adjacent to the backsoil and installed perpendicular to the ground; A band member (20) disposed adjacent to the plurality of piles (10a) in a direction perpendicular to the plurality of piles (10a) at the top of the excavated ground after being excavated to a predetermined depth on the opposite side of the backsoil; It is disposed adjacent to the plurality of piles (10a) in a direction perpendicular to the plurality of piles (10a) to correspond to the wale member (20) on the back soil side, and is formed adjacent to the wall member (10). An anchor member (30) consisting of a first surface (30a) and a second surface (30b) formed perpendicular to the first surface (30a); A U-shaped bolt (40) that is formed in a U shape and has both ends mounted on the first surface (30a) of the anchor member (30) after penetrating the wale member (20); and a tension member 50 mounted on the second surface 30b of the anchor member 30 and extending in a direction perpendicular to the second surface 30b. A self-supporting wall using U-shaped bolts is provided. do.

The wale member 20 includes a first flange 20a, a second flange 20b disposed parallel to the first flange 20a, and the first flange 20a and the second flange 20b. It is made up of interconnecting webs 20c, and the U-shaped bolt 40 includes a first extension member 40a, a second extension member 40b disposed in parallel with the first extension member 40a, and It consists of a connecting member (40c) that interconnects the first extension member (40a) and the second extension member (40b), and the first extension member (40a) is located at the top and bottom of the first flange (20a). After penetrating the upper part of the second flange (20b), the end is mounted on the first surface (30a) of the anchor member (30), and the second extension member (40b) is attached to the first flange (20a). After penetrating the lower portion and the lower portion of the second flange 20b, the end may be mounted on the first surface 30a of the anchor member 30.

The end of the first extension member (40a) is at a first point (35a) on the first surface (30a) of the anchor member (30) and the second extension is on the first surface (30a) of the anchor member (30). The second point 35b at which the end of the member 40b is mounted may be formed at a predetermined interval along the longitudinal direction of the pile 10a.

The anchor member 30 has an L-shaped cross-section and is adjacent to the first surface 30a and the second surface 30b. A plurality of ruler-shaped reinforcements 30c may be provided at a predetermined distance apart.

A concrete pad 60 may be formed on the lower surface of the second surface 30b to surround at least a portion of the tension member 50.

According to embodiments of the present invention, regardless of the type of pile 10a, the tensile force caused by the U-shaped bolt 40 and the tensile force caused by the tension member 50 can be applied equally in directions perpendicular to each other, thereby forming a self-supporting wall. (1) The stability and earth pressure bearing capacity can be improved.

Specifically, according to embodiments of the present invention, the tensile force by the U-shaped bolt 40 in the X-axis direction is applied to the wall member 10, and the tensile force by the tension member 50 in the Z-axis direction is applied to the wall member ( 10) is applied. In this case, the tensile force due to the U-shaped bolt 40 and the tensile force due to the tension member 50 act equally in the direction perpendicular to each other, and due to the balance of these forces, the tensile force due to the tension member 50 is applied to the wall member ( 10) can be passed on as is.

1 is a perspective view of a self-supporting wall according to an embodiment of the present invention
Figure 2 is an exploded view of a self-supporting wall according to an embodiment of the present invention
Figure 3 is a cross-sectional view of a self-supporting wall according to an embodiment of the present invention
Figure 4 is a plan view of a self-supporting wall according to an embodiment of the present invention
Figure 5 is a plan view of a self-supporting wall according to another embodiment of the present invention
Figure 6 is an example of using a self-supporting wall as a permanent wall according to embodiments of the present invention
Figure 7 is a perspective view of a self-supporting wall according to another embodiment of the present invention
Figure 8 is a plan view of a self-supporting wall according to another embodiment of the present invention

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The detailed description below is provided to provide a comprehensive understanding of the methods, devices and/or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing the embodiments of the present invention, if it is determined that a detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, the definition should be made based on the contents throughout this specification. The terminology used in the detailed description is only for describing embodiments of the present invention and should in no way be limiting. Unless explicitly stated otherwise, singular forms include plural meanings. In this description, expressions such as “comprising” or “comprising” are intended to indicate certain features, numbers, steps, operations, elements, parts or combinations thereof, and one or more than those described. It should not be construed to exclude the existence or possibility of any other characteristic, number, step, operation, element, or part or combination thereof.

Figure 1 is a perspective view of a self-supporting wall (1) according to an embodiment of the present invention, and Figure 2 is an exploded view of a self-supporting wall (1) according to an embodiment of the present invention. Additionally, Figure 3 is a cross-sectional view of a self-supporting wall (1) according to an embodiment of the present invention.

As shown in Figures 1 to 3, the self-supporting wall (1) according to an embodiment of the present invention includes a wall member (10), a strip member (20), an anchor member (30), and a U-shaped bolt (40). and tension member 50.

The wall member 10 is made up of a plurality of piles 10a installed perpendicular to the ground and adjacent to the backsoil. In these embodiments, the excavated soil represents soil excavated by an excavator for underground construction at a construction site, and the back soil represents soil located on the back side of the excavated soil and supported by the self-supporting wall (1). . In addition, the pile 10a may be, for example, a PHC (Pretensioned spun High strength Concrete) pile, a CIP (Cast In Place) pile, a PC (Precast Concrete) pile, etc., but the type of the pile 10a is particularly limited. That is not the case. These plurality of piles (10a) may be arranged in a row in the transverse direction, and the plurality of piles (10a) arranged in this way may constitute the wall member (10).

The wale member 20 is excavated to a predetermined depth on the opposite side of the backsoil and then placed adjacent to the plurality of piles 10a in a direction perpendicular to the plurality of piles 10a at the top of the excavated ground. The wale member 20 has an H-beam shape and may include a plurality of flanges and webs.

Specifically, the wale member 20 may be composed of a first flange 20a, a second flange 20b, and a web 20c. Here, the second flange 20b is arranged in parallel and spaced apart from the first flange 20a by a predetermined distance. Additionally, the web 20c may interconnect the first flange 20a and the second flange 20b. The position of the wale member 20 can be fixed by a U-shaped bolt 40, which will be described later.

The anchor member 30 is disposed adjacent to the plurality of piles 10a in a direction perpendicular to the plurality of piles 10a so as to correspond to the wale member 20 on the back soil side.

Referring to FIGS. 1 to 3 , the anchor member 30 may have an L-shaped cross-section, for example. At this time, the anchor member 30 may include a first surface (30a) and a second surface (30b). Here, the first surface 30a may be formed adjacent to the wall member 10, and the second surface 30b may be formed perpendicular to the first surface 30a. Additionally, the anchor member 30 may be provided with a plurality of reinforcement members 30c spaced apart from each other at a predetermined distance. The reinforcement (30c) is, for example, adjacent to the first surface (30a) and the second surface (30b). It can be made in the shape of a ruler. At this time, a plurality of reinforcing members 30c may be provided at a predetermined interval between the first point 35a, the second point 35b, and the anchoring member 54, which will be described later, and thus the tension member 50 The stability of the self-supporting wall 1 can be improved by supporting the anchor member 30 more stably in the area where the tension force caused by the U-shaped bolt 40 and the tension force caused by the U-shaped bolt 40 are applied. That is, a plurality of reinforcing members 30c may be provided to face each other at positions adjacent to the first point 35a, the second point 35b, and the anchoring material 54, which will be described later.

The U-shaped bolt 40 is a member for applying a tensile force corresponding to the tensile force generated by the tension member 50 in a direction perpendicular to the tensile force to the wall member 10. The U-shaped bolt 40 is formed in a U shape, and after penetrating the wale member 20, both ends can be mounted on the first surface 30a of the anchor member 30. Here, the U-shape is interpreted to include the U-shape as well.

Referring to FIG. 2, the U-shaped bolt 40 may be made of a first extension member 40a, a second extension member 40b, and a connecting member 40c. At this time, the first extension member (40a) and the second extension member (40b) are arranged in parallel at a predetermined interval, and the connecting member (40c) connects the first extension member (40a) and the second extension member (40b) to each other. It can be connected.

The first extension member 40a penetrates the upper part of the first flange 20a and the upper part of the second flange 20b, and the end of the first extension member 40a is the first surface 30a of the anchor member 30. ) can be installed.

The second extension member 40b penetrates the lower part of the first flange 20a and the lower part of the second flange 20b, and the end of the second extension member 40b is connected to the first surface 30a of the anchor member 30. ) can be installed.

The end of the first extension member 40a and the end of the second extension member 40b may be fastened and mounted on the first surface 30a of the anchor member 30 by the fastening member 45.

At this time, the first point 35a at which the end of the first extension member 40a is mounted on the first surface 30a of the anchor member 30 and the second extension on the first surface 30a of the anchor member 30 The second point 35b at which the end of the member 40b is mounted may be formed at a predetermined interval along the longitudinal direction of the pile 10a. That is, the first point 35a and the second point 35b may be formed at a predetermined distance apart in the longitudinal direction. Accordingly, the first extension member 40a and the second extension member 40b of the U-shaped bolt 40 may also be formed to be spaced apart at a predetermined distance in the longitudinal direction.

The tension member 50 is mounted on the second surface 30b of the anchor member 30 and extends in a direction perpendicular to the second surface 30b. That is, the tension member 50 may be wired along the longitudinal direction of the pile (10a). At this time, one end of the tension member 50 may be fixed by the anchor 52, and the other end of the tension member 50 may be fixed by the anchoring material 54 on the second surface 30b.

In this case, a tensile force is generated by the tension member 50 along the longitudinal direction of the pile 10a. In addition, the first extension member 40a and the second extension member 40b of the U-shaped bolt 40 extend in a direction perpendicular to the longitudinal direction of the tension member 50 to form a first surface 30a of the anchor member 30. ), so the tension caused by the U-shaped bolt 40 is applied to the wall member 10 in a direction perpendicular to the tension caused by the tension member 50. Accordingly, the wall member 10 is not pushed out by the back earth pressure due to the tensile force caused by the U-shaped bolt 40 and the tensile force caused by the tension member 50.

That is, the tensile force caused by the U-shaped bolt 40 is applied to the wall member 10 in the X-axis direction, and the tensile force caused by the tension member 50 is applied to the wall member 10 in the Z-axis direction. At this time, the tensile force due to the U-shaped bolt 40 and the tensile force due to the tension member 50 act equally in directions perpendicular to each other. In the present embodiments, as the size and area of the first surface 30a and the second surface 30b of the anchor member 30 are formed to be the same, tan 45°=1 is satisfied, and accordingly, the relationship below is satisfied.

Tensile force caused by U-shaped bolt (40)

(Force applied to the wall member (10) in the X-axis direction)

= Tensile force due to tension member (50)

(Force applied to the wall member (10) in the Z-axis direction)

Due to this balance of forces, the tensile force caused by the tension member 50 is transmitted to the wall member 10 without loss, and thus the stability and earth pressure bearing capacity of the self-supporting wall 1 can be strengthened.

FIG. 4 is a plan view of a self-supporting wall 1 according to an embodiment of the present invention, and FIG. 5 is a plan view of a self-supporting wall 1 according to another embodiment of the present invention.

As described above, the pile 10a according to embodiments of the present invention may be, for example, a PHC file, a CIP file, a PC file, etc., but the type of the pile 10a is not particularly limited.

Figure 4 is a diagram showing an example in which the pile (10a) is made of a PHC file, and Figure 5 is a diagram showing an example in which the pile (10a) is made of a PHC file and a PC file (or a PC file pre-manufactured in a factory). At this time, a grout member (not shown) for ground reinforcement may be grouted between the plurality of piles 10a on the back soil side.

According to embodiments of the present invention, regardless of the type of pile 10a, the tensile force caused by the U-shaped bolt 40 and the tensile force caused by the tension member 50 can be applied equally in directions perpendicular to each other, thereby forming a self-supporting wall. (1) The stability and earth pressure bearing capacity can be improved.

Figure 6 is an example of using the self-supporting wall 1 according to embodiments of the present invention as a permanent wall.

Referring to Figure 6, the self-supporting wall (1) can be used as a permanent wall by additionally constructing the first finishing member (70), the second finishing member (72), and the kaepbeam (80) in the self-supporting wall (1) described above. You can.

The first finishing member 70 is formed by pouring concrete of a predetermined size to surround the portion where the U-shaped bolt 40 is formed and the wale member 20.

The second finishing member 72 is a member that finishes the front of the wall member 10 on the excavated soil side, and may be made of, for example, granite.

The kaepbim 80 is a member that finishes the upper part of the wall member 10, and may be made of, for example, concrete.

Additionally, a concrete pad 60 may be formed on the lower surface of the second surface 30b to surround at least a portion of the tension member 50. The concrete pad 60 may be disposed adjacent to the lower surface of the second surface 30b and surround the upper part of the tension member 50. In this case, the tensile strength of the tension member 50 and the anchor member 30 can be further improved by the concrete pad 60.

In addition, when the self-supporting wall 1 is used as a permanent wall, a tension member protective cover (not shown) may be placed on the top of the anchor member 54 to prevent corrosion of the tension member 50.

Figure 7 is a perspective view of a self-supporting wall (1) according to another embodiment of the present invention, and Figure 8 is a plan view of a self-supporting wall (1) according to another embodiment of the present invention.

7 and 8, the pile 10a may be made of, for example, an H pile. In this case, the self-supporting wall (1) can be used as an earth retaining wall (temporary earth retaining facility). At this time, a grout member (not shown) for ground reinforcement may be grouted on the flange portion of the pile 10a on the back soil side. Meanwhile, in the present embodiments, a plurality of U-shaped bolts 40 may be provided at a predetermined interval, and the number and separation distance of the U-shaped bolts 40 are not particularly limited.

Although the present invention has been described in detail above through representative embodiments, those skilled in the art will recognize that various modifications to the above-described embodiments are possible without departing from the scope of the present invention. You will understand. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims described later but also by equivalents to the claims.

1: Self-supporting wall
10: Wall member
10a: pile
20: wale member
20a: first flange
20b: second flange
20c: web
30: anchor member
30a: first side
30b: second side
30c: reinforcement
35a: first point
35b: second point
40: U-shaped bolt
40a: first extension member
40b: second extension member
40c: connecting member
45: fastening member
50: Tension member
52: anchor
54: fixing material
60: concrete pad
70: first finishing member
72: second finishing member
80: Capbeam

Claims (5)

A wall member (10) made of a plurality of piles (10a) adjacent to the back soil and installed perpendicular to the ground;
After being excavated to a predetermined depth on the opposite side of the backsoil, it is disposed adjacent to the plurality of piles 10a in a direction perpendicular to the plurality of piles 10a at the top of the excavated ground, and a first flange 20a ), a second flange (20b) disposed in parallel with the first flange (20a), and a web (20c) connecting the first flange (20a) and the second flange (20b) to each other (20). );
It is disposed adjacent to the plurality of piles (10a) in a direction perpendicular to the plurality of piles (10a) to correspond to the wale member (20) on the back soil side, and is formed adjacent to the wall member (10). An anchor member (30) consisting of a first surface (30a) and a second surface (30b) formed perpendicular to the first surface (30a);
It is formed in a U-shape, and after penetrating the wale member 20, both ends are mounted on the first face 30a of the anchor member 30, and includes a first extension member 40a, the first extension member U-shaped bolt (40) consisting of a second extension member (40b) disposed in parallel with (40a), and a connecting member (40c) connecting the first extension member (40a) and the second extension member (40b) to each other. ); and
It includes a tension member (50) mounted on the second surface (30b) of the anchor member (30) and extending in a direction perpendicular to the second surface (30b),
The end of the first extension member (40a) passes through the upper part of the second flange (20b) and the upper part of the first flange (20a) and then is mounted on the first surface (30a) of the anchor member (30). , the end of the second extension member (40b) penetrates the lower part of the second flange (20b) and the lower part of the first flange (20a) and then is mounted on the first surface (30a) of the anchor member (30). As this happens, the tensile force caused by the U-shaped bolt 40 is applied to the wall member 10 in the X-axis direction,
As the tension member 50 is wired along the longitudinal direction of the pile 10a and the end of the tension member 50 is mounted on the second surface 30b, the tensile force caused by the tension member 50 is generated in the X-axis direction. is applied to the wall member 10 in the Z-axis direction perpendicular to
A self-supporting wall using U-shaped bolts in which the magnitude of the tensile force by the U-shaped bolt (40) is the same as the magnitude of the tensile force by the tension member (50).
delete In claim 1,
The first point 35a at which the end of the first extension member 40a is mounted on the first surface 30a of the anchor member 30 and the first point 35a on the first surface 30a of the anchor member 30. 2 The second point (35b) where the end of the extension member (40b) is mounted is a self-supporting wall using U-shaped bolts, which is formed at a predetermined distance along the longitudinal direction of the pile (10a).
In claim 3,
The anchor member 30 has an L-shaped cross section,
adjacent to the first surface (30a) and the second surface (30b) A self-supporting wall using U-shaped bolts in which a plurality of U-shaped reinforcements (30c) are provided at predetermined intervals.
In claim 3,
A self-supporting wall using U-shaped bolts, wherein a concrete pad (60) is formed on the lower surface of the second surface (30b) to surround at least a portion of the tension member (50).

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