KR101684399B1 - Retaining Wall using Precast Panels and PHC Piles, and Constructing Method of such Retaining Wall - Google Patents

Abstract

The present invention relates to a retaining wall with a support structure using a multistage stabilizing pile at a rear of a precast concrete panel, and a construction method thereof. More specifically, a retaining wall is constructed using a PC panel, and a front stabilizing pile is installed in a back of the PC panel. Moreover, back earth pressure applied to the PC panel is transferred to the front stabilizing pile by binding and integrating the front stabilizing pile and the PC panel using a front binding material. In addition, a rear stabilizing pile is installed to be spaced from the rear of the front stabilizing pile, and a part of back earth pressure applied to the front stabilizing pile is shared to be burdened by the rear stabilizing pile by binding the front stabilizing pile and the rear stabilizing pile using a rear binding material. Accordingly, an excessive growth of a cross section of a pile to support back earth pressure may be prevented, and the back earth pressure applied to the PC panel is shared to be supported by the rear stabilizing pile; thereby being capable of realizing enough supporting force with respect to the back earth pressure.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall having a supporting structure using a multi-stage constraining pile behind a precast concrete panel and a construction method thereof,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall and a method for constructing the same. More specifically, the present invention relates to a method for constructing a retaining wall using a precast concrete panel (hereinafter abbreviated as "PC panel"), The front retaining pile and the PC panel are connected to each other by a front binding material so that the back earth pressure acting on the PC panel is transmitted to the front retaining pile, By providing a rear inhibiting pile at a distance from the front inhibiting pile at a distance, the front inhibiting pile and the rear inhibiting pile are bound by a rear binding material, and a part of the backing soil pressure applied to the forward inhibiting pile is made to bear by dividing the rear inhibiting pile, It is possible to prevent the cross section of the pile for supporting the earth pressure from becoming excessively large, So as to support the rear division inhibiting stake it relates to a force that is sufficient to exhibit "precast retaining wall having a support structure using a multi-stage piles of concrete and a rear panel construction method" for the back face earth pressure.

In constructing the retaining wall, a plurality of support piles are installed in the ground with a gap in the lateral direction (width direction of the retaining wall), and the retaining walls are constructed by stacking the blocks at the lateral intervals between the support piles Is disclosed in Korean Patent Publication No. 10-2010-0026433.

However, in the case of such a conventional technique, the degree of integration between the support pile and the block is very weak. For this reason, there is a disadvantage in that the back soil pressure to which the block is subjected is only small, and therefore the support pile must be installed very closely in the lateral direction. In addition, the back soil pressure acting on the block is transferred only to the entire support pile, so that the support pile must bear all back pressure, and the scale of the support pile itself (cross section of the support pile) becomes excessively large. As the size of the support pile increases, the difficulty in transportation becomes more difficult. In addition, a large crane should be used to erect a large support pile and a considerable difficulty is involved in the installation of the support pile. A situation will arise.

Korean Patent Publication No. 10-2010-0026433 (published on Mar. 10, 2010).

The present invention has been developed in order to overcome the limitations of the prior art as described above. Specifically, a retaining wall is constructed by using a PC panel produced in a factory, and a pile supporting a PC panel is disposed at a rear stage of the PC panel , The back soil pressure acting on the PC panel is shared by the piles disposed in multiple stages so as to prevent the cross section of the pile for supporting the back earth pressure from being excessively enlarged and thereby advantageous in transporting and constructing piles, And an object of the present invention is to provide a technique capable of improving efficiency and economical efficiency of construction.

In order to achieve the above object, according to the present invention, there is provided a pile of the present invention, comprising: a plurality of forward force controlling piles vertically fixed on the ground at intervals in the lateral direction; A PC panel for supporting the back soil pressure due to the back pressure pile and a backward force pile vertically fixedly disposed on the ground at a distance from the forward pressure pile to the immediately after room; The PC panel and the front detent pile are joined together by the front binding material in a state in which the PC panel is disposed in front of the front inhibiting pile; The front inhibiting pile and the rear inhibiting pile located immediately thereafter are bound together by a rear binding material and are integrated; The back earth pressure applied to the PC panel in the forward direction is transmitted to the front inhibiting pile by the front binding material and a part of the back soil pressure transmitted to the front inhibiting pile is transmitted to the rear inhibiting pile by the rear binding material, And a retaining force is exerted to support the rear soil pressure by all of the rear inhibiting piles.

In order to achieve the above-mentioned object, according to the present invention, a plurality of forward force resting piles are vertically fixedly disposed on the ground at intervals in the lateral direction, and a rearward force pile is vertically placed on the ground And vertically stacking and arranging the PC panel supporting the earth pressure caused by the rear soil gravel on the rear side of the front supporting pile, and constructing the retaining wall; The PC panel is coupled to the front detent pile in a state where the PC panel is disposed in front of the front detent pile, thereby integrating the PC panel and the front detent pile; The front inhibiting pile and the rear inhibiting pile located immediately thereafter are bound and integrated with each other using a rear binding material; The back earth pressure applied to the PC panel in the forward direction is transmitted to the front inhibiting pile by the front binding material and a part of the back soil pressure transmitted to the front inhibiting pile is transmitted to the rear inhibiting pile by the rear binding material, A retaining wall having a structure in which a supporting force for supporting a back earth pressure is exerted by all of the rear retaining piles is provided.

In the retaining wall and the construction method of the present invention, both the front binding material and the rear binding material can be made of a wire material. The front binding material is brought into close contact with the back surface of the front inhibiting pile, The PC panel and the front detent pile may be integrally coupled to each other and the rear binding material may be attached to the front surface of the front inhibiting pile And a rear fixing pile is provided with a fixing member so as to surround the rear surface thereof; Both ends of the rear binding material extending rearward after winding the front inhibiting pile are fixedly bonded to the fixing member, respectively; The front inhibition pile and the rear inhibition pile may be integrally bound by the rear binding material.

In the present invention, the earth pressure applied to the PC panel is applied in the forward direction with respect to the front inhibiting pile, which is transmitted in the form of a tensile force to the rear binding material, And is supported by a rear inhibiting pile.

As described above, according to the present invention, a part of the rear soil pressure applied to the front inhibiting pile is supported by the rear inhibiting pile, so that sufficient supporting force against the rear soil pressure can be exerted by the front and rear inhibiting piles, There is an advantage that it is possible to effectively prevent the cross section of the constraining pile for supporting the earth pressure from becoming excessively large.

FIG. 1 and FIG. 2 are perspective views schematically showing different views of a retaining wall according to an embodiment of the present invention.
3 is a side cross-sectional view in schematic transverse direction along line AA of FIG.
4 is a schematic vertical cross-sectional view according to line BB of FIG. 3 showing a configuration in which a PC panel and a front-returning pile are bound by a front binding material in the present invention.
FIG. 5 is a schematic vertical sectional view according to a line CC of FIG. 3 showing an example of a configuration in which a front inhibiting pile and a rear inhibiting pile are bound by a rear binding material in the present invention.
FIG. 6 is a schematic vertical cross-sectional view corresponding to FIG. 5 showing another example of the structure in which the front inhibiting pile and the rear inhibiting pile are bound by the rear binding material in the present invention.
FIG. 7 and FIG. 8 are schematic perspective views showing different views of a retaining wall according to an embodiment in which a binding support is further provided between a front inhibiting pile and a rear inhibiting pile in the present invention.
9 is a side cross-sectional view in schematic transverse direction along line DD of Fig.
10 is a plan sectional view in a schematic vertical direction according to line EE in Fig.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the technical idea of the present invention and its essential structure and operation are not limited thereby. In this specification, the term " rear surface "refers to a surface to which the back surface soil contacts on the retaining wall, and the term " rear" means the direction from the retaining wall to the back surface soil material. Therefore, the term "front" refers to the side of the retaining wall that is opposite to the aforementioned back side, and the term "forward" refers to the direction from the back side to the back side of the retaining wall.

1 and 2 are schematic perspective views showing the retaining wall 100 according to the present invention in different directions, respectively. FIG. 3 is a side cross-sectional view in schematic transverse direction along line AA of FIG. 1 Respectively. Figs. 4 and 5 show a schematic vertical sectional view taken along line B-B and line C-C of Fig. 3, respectively, in a schematic vertical direction. 4 shows a configuration in which the PC panel 3 and the front inhibiting pile 1 are bound by the front binding material 41. In Fig. 5, the front inhibiting pile 1 and the rear inhibiting pile 2 are arranged at the rear And is fastened by the binding material 42. In Fig. For the sake of convenience, the rear gypsum filled in the rear of the retaining wall 100 is not shown.

As shown in the drawings, the retaining wall 100 according to the present invention includes a plurality of forward force controlling piles 1 arranged at intervals in the transverse direction and a plurality of forward retaining piles 1 arranged at lateral intervals between the forward retaining piles 1, And a PC panel made of a precast concrete member which is coupled with the front clamping pile 1 so as to be integrated with the front clamping pile 1 to support the rear soil pressure due to the front clamping pile 1 and to transmit the rear soil pressure to the front clamping pile 1. [ 3 and the rear retaining pile 1 and the front retaining pile 1 are integrally joined together by a rear binding material 42 so as to be integrated with the front retaining pile 1 at a predetermined distance from the front retaining pile 1, And a backward-constraining pile (2) which is received and supported by a part of the pile (2).

Specifically, a plurality of the front inhibiting piles (1) are spaced apart in the lateral direction in accordance with the width of the retaining wall (100) to be installed. That is, a plurality of forward force limiting piles (1) are vertically installed and installed in the ground (200) so that the lower end of the front inhibiting pile (1) is penetrated to a predetermined depth. It is preferable to use a precast hollow concrete pile called a PHC pile (Pre-tensioned Spun High Strength Concrete Pile), and it is also preferable that the rear inhibition pile 2 to be described later is also made of a PHC pile. However, in the present invention, the constrained pile is not necessarily limited to the PHC pile.

A plurality of PC panels 3 are stacked vertically on the front side of the front inhibition pile 1 to form a wall. The PC panel 3 and the front inhibition pile 1 are bound together by a front binding material 41 . The PC panel 3 is a plate-shaped member made of precast concrete. The back surface soil of the PC panel 3 is directly in contact with the rear surface of the PC panel 3, so that the back earth pressure is primarily transferred to the PC panel 3. The PC panel 3 is disposed vertically in front of the front inhibition pile 1, and is provided so that a plurality of the PC panels 3 are stacked at a required height in the vertical direction, and a plurality of the PC panels 3 are continuously arranged do.

1 to 5, the forward bracing pile 1 is located at a position where the PC panels 3 are continuous in the horizontal direction, but the position of the forward bracing pile 1 is not limited thereto , The front inhibiting pile 1 may be positioned in the middle of the PC panel 3 in the lateral direction as required.

When the PC panel 3 is disposed in front of the front inhibiting pile 1 as described above, the front inhibiting pile 1 may directly contact the back surface of the PC panel 3, but as illustrated in the figure, The tightening member 31 may be interposed between the back surface of the PC panel 3 and the front surface of the front retaining pile 1. [ That is, the back surface of the PC panel 3 is in close contact with the front surface of the tightening member 31, and the front surface of the front inhibiting pile 1 is closely attached to the back surface of the tightening member 31. The tightening member 31 can be disposed only at the position where the front binding material 41 described later is installed in the vertical direction. That is, the tight contact members 31 can be arranged at intervals in the vertical direction.

The contact member 31 functions to increase the support area between the PC panel 3 and the front effector pile 1 and accordingly the front effect pile 1 directly contacts the PC panel 3, It is possible to prevent a situation in which the pressure is generated. Particularly in the case where the PC panel 3 and the front inhibiting pile 1 are closely attached to each other using the contact member 31 as described above, There is a gap between the front surfaces of the constraining piles 1, and it is possible to easily install the rear binding material 42 by winding the rear binding material 42 on the front inhibiting pile 1 using the gap.

As described above, in the present invention, the PC panel 3 and the front inhibition pile 1 are integrated by being bound by the front binding material 41. Specifically, the front binding material 41 is made of a wire material such as wire or a tension material. The front binding material 41 is in close contact with the back surface of the front inhibiting pile 1, Both ends thereof are passed through the PC panel 3 toward the front and then fixed to the front face of the PC panel 3 so as to integrally bind the PC panel 3 and the front inhibiting pile 1 . In the embodiment illustrated in the drawings, the concave fixing portion is formed on the front surface of the PC panel 3, so that the amount of the front binding material 41 that has passed through the PC panel 3 from the rear and led to the front surface of the PC panel 3 And the end portion is fixed in the concave fixing portion. After both ends of the front binding material 41 are fixed in the concave fixing part, it is preferable to fill the fixing part with shrink-proof mordant or the like. However, the concave fusing portion, to which both ends of the front binding material 41 are fixed, can be omitted if necessary, so that both ends of the front binding material 41 are simply attached to the front side of the PC panel 3 It may be fixed to the outside of the front face.

In order to determine the installation position of the front binding material 41 and prevent the front binding material 1 from slipping in the vertical direction when the front binding material 41 is wound around the back surface of the front inhibiting pile 1, It is also preferable to form a concave groove into which the front binding material 41 can be fitted on the surface of the pile 1. [ The front binding material 41 may be made of a variety of materials such as general binding wires or a tension material. However, taking into account that the rear surface of the retaining wall 100 is filled with the soil gravel, the unbonded strand is moved forward It is also preferable to use it as the binding material 41. Particularly, when a tension member is used as the front binding material 41, both ends can be fixed to the PC panel 3 in a state in which the front binding material 41 is pulled to introduce a tension force, The constraining pile 1 can be more firmly integrated.

As described above, since the PC panel 3 is integrated with the front inhibiting pile 1 by the front binding material 41, the rear surface soil pressure acting on the PC panel 3 by the rear surface soil, The tensile force exerted on the front binding material 41 is transmitted to the front inhibiting pile 1. In this way, A part of the back soil pressure transmitted to the front inhibition pile 1 is supported by the front inhibition pile 1 itself provided on the ground, but a part of the back soil pressure is inhibited by the rear binding material 42 through the rear binding material 42 Is transmitted to the pile (2) and is divided and supported by the rear inhibition pile (2).

Specifically, the rear inhibition piles 2 are vertically installed on the ground 200 at predetermined intervals rearward from the front inhibition pile 1. That is, the rear inhibition pile 2 is vertically installed such that the lower end of the rear inhibition pile 2 is penetrated to the predetermined depth 200 in the same manner as the front inhibition pile 1. A plurality of the rear inhibiting piles 2 are also spaced apart from each other in the lateral direction in accordance with the width of the retaining wall 100 to be installed. The lateral spacing between the rear inhibiting piles 2 and the lateral spacing between the front inhibiting piles 1 And it is preferable that the front inhibiting pile 1 and the rear inhibiting pile 2 are located on the same line when the retaining wall 100 is drawn in an imaginary line orthogonal from the front to the back. In other words, it is preferable to dispose the rear inhibiting pile 2 such that both the front inhibiting pile 1 and the rear inhibiting pile 2 are located on a virtual line orthogonal to the lateral direction of the retaining wall 100 in the vertical plane will be. For the sake of convenience, in this specification, it is expressed as "installed immediately after the room" that the rear inhibition pile 2 is disposed on the rear side of the front inhibition pile 1 in this manner.

The front inhibition pile 1 and the rear inhibition pile 2 are bound and integrated by the rear binding material 42 in a state where the rear inhibition pile 2 is disposed immediately after the front inhibition pile 1 in this manner. The rear binding material 42 made of wire or a tension material can be installed horizontally in the form of wrapping the front inhibition pile 1 and the rear inhibition pile 2 positioned immediately therebelow. In the embodiment shown in Figs. 1 to 5, the rear binding material 42 extends rearward after wrapping the front inhibiting pile 1 in such a manner as to be in close contact with the front surface of the front inhibiting pile 1, The fixing member 43 is disposed to surround the rear surface of the fixing member 43 and both ends of the rear binding material 42 are fixedly bonded to the fixing member 43. [ Particularly, in the embodiment illustrated in Figs. 1 to 5, the fixing member 43 has a semi-circular arc-shaped steel plate so as to close and cover the back surface of the rear inhibition pile 2, And both ends of the rear binding material 42 which extends rearwardly while covering the front inhibition pile 1 are passed through the fixing portion of the fixing member 43 and then fixed. However, the mounting structure of the rear binding material 42 is not limited to the above.

6 is a schematic vertical cross-sectional view corresponding to FIG. 5 showing another example of the configuration in which the rear binding material 42 is provided. As shown in FIG. 6, a wire material such as a wire or a tension material, The front and rear sides of the rear binding material 42 are provided so as to enclose the front inhibiting pile 1 and the rear inhibiting pile 2, respectively, It is possible. At this time, a coupling member 45 may be used to make one wire into a ring shape. The rear binding material 42 may also be composed of various materials such as a general binding wire or a tension material or an unbonded strand in the same manner as the front binding material 41.

As described above, the rear binding material 42 that binds the front and rear holding piles 1 and 2 to be integrated with each other can be provided with a plurality of spaced apart from each other in the vertical direction. When the contact member 31 is present between the PC panel 3 and the front inhibition pile 1 at the upper and lower positions of the contact member 31, The rear binding material 42 is easily inserted between the back surface of the PC panel 3 and the front surface of the front inhibiting pile 1 and brought into close contact with the front surface of the front inhibiting pile 1 .

On the other hand, the fixing member 43 is disposed so as to be in close contact with the rear surface of the rear inhibition pile 2 or the rear binding material 42 is directly brought into close contact with the rear surface of the rear inhibition pile 2 to wrap the rear inhibition pile 2 The fixing member 43 or the rear binding material 42 can be fitted to the rear side of the fixing member 43 or the rear binding material 42 in order to fix the fixing position of the fixing member 43 or the rear binding material 42 and prevent the fixing member 43 from slipping in the vertical direction, It is also preferable to form it on the surface of the constraining pile 2.

In the present invention, since the front inhibiting pile 1 and the rear inhibiting pile 2 are bound together by the rear binding material 42, the rear soil pressure applied in the forward direction with respect to the front inhibiting pile 1, Is transmitted in the form of a tensile force to the rear retaining pile (42) so that it is also applied to the rear retaining pile (2) in the forward direction, and this force is supported by the rear retaining pile (2). The rear earth pressure applied to the front side of the PC panel 3 by the backing soil is distributed to the front inhibiting pile 1 and the rear inhibiting pile 2 by the front binding material 41 and the rear binding material 42 . That is, a part of the back earth pressure applied to the front inhibiting pile is supported by the rear inhibiting pile. Therefore, according to the present invention, it is possible to prevent the cross-section of the constraining pile for supporting the rear soil pressure from becoming excessively large, and sufficient supporting force against the rear soil pressure can be exerted by the front and rear inhibiting piles.

In order to construct the retaining wall 100 of the present invention as described above, it is necessary to install the front inhibiting pile 1 and the rear inhibiting pile 2 in advance in the ground 200, The panels 3 are sequentially stacked in the vertical direction. When the PC panel 3 is stacked, the back surface soil is covered with the back surface corresponding to the height of the PC panel 3, so that whenever each PC panel 3 is installed in front of the front effect pile 1, The front binding material 41 is used to bind the PC panel 3 and the front holding pile 1 and then the back surface soil is matched to the height of the PC panel 3 . Of course, in the case where the rear binding material 42 is to be installed within the height of the PC panel 3, the front and rear forcing piles 1 and 2 are bound to each other by the rear binding material 42 .

The method of constructing a retaining wall according to the present invention is characterized in that first and foremost the PC panel 3 is installed in the ground 200 and the front inhibiting pile 1 and the rear inhibiting pile 2 are moved backward The PC panel 3 and the front inhibiting pile 1 are joined together by the front binding material 41 and integrated with each other using the binding material 42. Then, ) Perform backward compaction of soil gypsum. The two-stage PC panels are stacked on top of the first-stage PC panel, and before the two-stage PC panels are stacked or the two-stage PC panels are stacked, The operation of integrating the front inhibiting pile 1 and the rear inhibiting pile 2 using the front binding material 42 and the integration operation of the PC panel 3 and the front inhibiting pile 1 using the front binding material 41, 3) Perform the soil back soil compaction work on the rear side. Then, this operation is repeatedly carried out according to the height of the retaining wall required.

In the above example, after the integration of the front inhibiting pile 1 and the rear inhibiting pile 2 using the rear binding material 42 is performed, the PC panel 3 and the front binding material 41 using the front and rear binding materials 41, It has been described that the integration work of the front inhibiting pile 1 is progressed. However, these three operations, that is, the integration work of the front inhibiting pile 1 and the rear inhibiting pile 2 using the rear binding material 42, The work and the integration work of the PC panel 3 and the front holding pile 1 using the front binding material 41 may be carried out in a mutually different order.

Meanwhile, in the present invention, a binding support 8 may further be provided between the front inhibiting pile 1 and the rear inhibiting pile 2. 7 and 8 are schematic views showing different views of the retaining wall according to the embodiment in which the binding support 8 is further provided between the front inhibiting pile 1 and the rear inhibiting pile 2 in the present invention, 9 is a side cross-sectional view in schematic transverse direction along line DD of Fig. 7, and Fig. 10 is a schematic vertical cross-sectional view along line EE in Fig. 9 have.

As shown in FIGS. 7 to 10, a binding support 8 may be further provided between the front inhibiting pile 1 and the rear inhibiting pile 2. Both ends of the binding support 8 are brought into contact with the front inhibiting pile 1 and the rear inhibiting pile 2, and the binding support 8 is embedded in the backing gravel. As the binding support 8, a concrete beam member can be used, but is not limited thereto.

In the state where the binding support 8 extending long in the backward direction from the back surface of the front inhibition pile 1 is horizontally arranged and the rear end of the binding support 8 is in close contact with the front surface of the rear inhibition pile 2, When a rear binding material 42 is provided between the front inhibiting pile 1 and the rear inhibiting pile 2 and a binding force is introduced into the rear binding material 42 as described above, The first and second connecting members 1 and 2 and the binding support 8 integrally move together so that the occurrence of displacement in the retaining wall can be more effectively suppressed. 7 to 10, the binding support 8 is shown as being located at the installation position of the rear binding material 42, but the position of the binding support 8 is not limited to this.

1: Forward clamping pile
2: rear inhibiting pile
3: PC panel
8: Bonding support
31:
41: front binding material
42: rear binding material
43: fixing member
45: coupling member
100: retaining wall
200: Ground

Claims (4)

A plurality of forward force controlling piles (1) vertically fixedly arranged on the ground (200) at intervals in the transverse direction, and a plurality of front holding piles (1) A PC panel 3 for supporting the back soil pressure and a rear inhibition pile 2 vertically fixedly arranged on the ground 200 with a spacing from the front inhibition pile 1 immediately afterward;
The PC panel 3 and the front inhibiting pile 1 are bound together by the front binding material 41 in a state in which the PC panel 3 is disposed in front of the front inhibiting pile 1 so that the front binding material 41 between the back surface of the PC panel 3 and the front surface of the front inhibition pile 1 is provided with a front surface formed in a plane contacting with the PC panel 3, The back surface of the PC panel 3 is disposed so as to increase the supporting area between the PC panel 3 and the front inhibiting pile 1, (31) and the front face of the front inhibiting pile (1) is disposed so as to be in close contact with the rear face of the contact member (31);
The front inhibition pile 1 and the rear inhibition piles 2 positioned immediately therebelow are bound together by the rear binding material 42 so that the back soil pressure applied to the PC panel 3 in the forward direction is combined with the forward binding force A part of the back earth pressure transmitted to the front inhibiting pile 1 is transmitted to the rear inhibiting pile 2 by the rear binding material 42, And a supporting force for supporting the rear earth pressure is exerted by both the pile 1 and the rear inhibition pile 2;
At the position where the front binding material (41) is installed, a concave groove is formed on the surface of the front inhibiting pile (1) so as to prevent the front binding material (41) from slipping in the vertical direction.
The front binding material 41 is placed on a concave groove formed on the surface of the front inhibiting pile 1 and closely attached to the back surface of the front inhibiting pile 1, The opposite ends of the front binding material 41 are fixed in a concave fused portion formed on the front surface of the PC panel 3 after the both ends of the pile 1 are wound and then passed through the PC panel 3 forward So that the PC panel 3 and the breech-restraint pile 1 are integrally joined together;
The fixing member 43 is disposed in the rear inhibition pile 2 so as to surround the rear surface of the rear inhibition pile 2 so that the rear surface of the rear inhibition pile 2 can be closely contacted and wrapped. And a fixing unit provided on both sides of the steel plate, respectively;
The surface of the rear inhibition pile 2 is provided with a recessed groove for preventing the fixing member 43 from slipping in the vertical direction by fitting the fixing member 43. The recessed groove 43 formed on the surface of the rear inhibition pile 2 A fixing member 43 is disposed;
The rear binding material 42 is formed between the back surface of the PC panel 3 and the front surface of the front suppressing pile 1 at the upper and lower positions of the contact member 31, And the rear end of the rear binding material 42 extending rearward is wrapped around the front end of the fixing member 1 43 are fixed and joined together in a tense state so that the front inhibiting pile 1 and the rear inhibiting pile 2 are integrally bound together by the rear binding material 42 having a ring form in which they are closed together ;
A plurality of rear binding members (42) are provided at intervals in the vertical direction;
Between the front inhibiting pile 1 and the rear inhibiting pile 2, both ends of the front inhibiting pile 1 and the rear inhibiting pile 2 are guided so as to induce the integral behavior of the front inhibiting pile 1 and the rear inhibiting pile 2, And a binding support (8) extending in a long form in contact with the reinforcing support (8).
delete delete A plurality of the front inhibiting piles 1 are vertically fixedly disposed on the ground 200 with an interval in the lateral direction and the rear inhibiting piles 2 are sandwiched between the ground 200 And a step of vertically stacking and arranging the PC panel 3 supporting the back earth pressure caused by the back soil gravel in the lateral gap between the front inhibition piles 1, );
The PC panel 3 and the front inhibition pile 1 are bound together by using the front binding material 41 in a state where the PC panel 3 is disposed in front of the front inhibition pile 1, 41 are provided between the back surface of the PC panel 3 and the front surface of the front inhibiting pile 1 at a position where the front binding material 41 is provided, A contact member 31 having a front face made in a plane contacting with the PC panel 3 and having a rear face made of a curved face closely contacting with the curved outer face of the front inhibition pile 1 is placed between the front face of the PC The back surface of the PC panel 3 is brought into close contact with the front surface of the tightening member 31 and the front surface of the front inhibiting pile 1 is brought into close contact with the front surface of the tightening member 31, (31) is disposed so as to be in close contact with the back surface of the base (31);
The front inhibition pile 1 and the rear inhibition piles 2 located immediately thereafter are bound and integrated with each other using a rear binding material 42;
The rear earth pressure applied to the PC panel 3 in the forward direction is transmitted to the front inhibiting pile 1 by the front binding material 41 and a part of the rear soil pressure transmitted to the front inhibiting pile 1 is transferred to the rear binding material 42 to the rear inhibition pile 2 to form a retaining wall having a structure in which a supporting force for supporting the rear soil pressure is exerted by both of the front inhibiting pile 1 and the rear inhibiting pile 2;
A concave groove is formed on the surface of the front inhibiting pile 1 so as to prevent the front binding material 41 from slipping in the vertical direction by sandwiching the front binding material 41 at the position where the front binding material 41 is provided, The front binding material 41 is placed on the concave groove formed on the surface of the front inhibiting pile 1 and closely attached to the back surface of the front inhibiting pile 1 to wind the forwarding piling 1, Both ends of the front binding material 41 are fixed in the concave fixing portion formed on the front surface of the PC panel 3 after the both ends are passed through the PC panel 3, And the front inhibiting pile 1 are integrally bound to each other;
The fixing member 43 is disposed in the rear inhibition pile 2 so as to surround the rear surface of the rear inhibition pile 2 so that the rear surface of the rear inhibition pile 2 can be closely contacted and wrapped. And a fixing unit provided on both sides of the steel plate, respectively;
The surface of the rear inhibition pile 2 is provided with a recessed groove for preventing the fixing member 43 from slipping in the vertical direction by fitting the fixing member 43. The recessed groove 43 formed on the surface of the rear inhibition pile 2 A fixing member 43 is disposed;
The rear binding material 42 is formed between the back surface of the PC panel 3 and the front surface of the front suppressing pile 1 at the upper and lower positions of the contact member 31, And the rear end of the rear binding material 42 extending rearward is wrapped around the front end of the fixing member 1 43 are fixed and joined together in a tense state so that the front inhibiting pile 1 and the rear inhibiting pile 2 are integrally bound together by the rear binding material 42 having a ring form in which they are closed together ;
A plurality of rear binding members (42) are provided at intervals in the vertical direction;
Between the front inhibiting pile 1 and the rear inhibiting pile 2, both ends of the front inhibiting pile 1 and the rear inhibiting pile 2 are guided so as to induce the integral behavior of the front inhibiting pile 1 and the rear inhibiting pile 2, , And the binding support (8) is embedded in the backing gypsum.

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