KR100847022B1 - wire mat for reinforced earth retaining wall - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire mat for a reinforcing earth retaining wall and a method of constructing a reinforcing earth retaining wall using the same.

Description

Wire mat for reinforced earth retaining wall

1 is a perspective view showing a wire mat for a reinforcing earth retaining wall according to a preferred embodiment of the present invention.

Fig. 2 is an assembled side view showing an enlarged view of a portion A in Fig. 1; Fig.

3 is a side view showing the wall material and the floor material of Fig. 1 separated; Fig.

4 is a perspective view showing the reinforcing support bar of Fig.

5 is a perspective view illustrating a wire mat for reinforcing earth retaining walls according to another preferred embodiment of the present invention.

Fig. 6 is an enlarged side view of the portion B of Fig. 5; Fig.

Fig. 7 is a perspective view showing the reinforcing support bar of Fig. 5; Fig.

FIG. 8 is a view showing a construction procedure of a reinforced earth retaining wall according to a preferred embodiment of the present invention; FIG.

9 is a sectional view of a reinforcing earth retaining wall having a conventional wire mat.

10 is a perspective view showing the first wire mat of FIG. 9;

Fig. 11 is a perspective view showing the second wire mat of Fig. 9; Fig.

12 is a side view showing a joint portion of the wire mat and the extended stiffener.

Description of the Related Art

30, 30a, 30b: back mat 40, 40a, 40b: nonwoven fabric

60: Extension stiffener 100,300: Wire mat

110,330: wall member 112, 114; 312, 314:

120, 320: hinges 120a, 120b: circular hinge ring

130, 330: reinforcing supporting bars 131, 331:

133,333: Extension bar 135: Movable ring

136: upper piece 137: lower piece

138: Connecting piece 139: Storage groove

160,360: Flooring material 170,370: Connection hinge reinforcement

171,371: Retaining ring 180,380: Geogrid (extended stiffener)

320a, 320b: a hook-shaped hinge ring 335:

Patent Document: Japanese Patent No. 479163

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire mat for a reinforcing earth retaining wall and a method of constructing a reinforcing earth retaining wall using the same.

Conventionally, for example, a wire mat for a reinforcing earth retaining wall and a construction method disclosed in a patent document are proposed. As shown in FIGS. 9 to 12, the reinforced earth retaining wall 10 of the patent document includes first and second wire mesh mats 20 and 20b stacked in three layers on a foundation stone 200, A mat 80, a back mat 30, a nonwoven fabric 40, a vegetation mat 50, and an embankment 15. The first wire mat 20 is a wire net having a plurality of transverse roots 22 and a longitudinal roots 24 and is composed of a floor material 26 extending flat in the horizontal direction and a transverse rope And a plurality of longitudinal ribs 24 bent to extend upwardly. The bottom material 26 interacts with the fillet 15 to help the fillet 15 maintain its position more stably. The longitudinal roots 24 extend longer than the transverse rods 222 provided at the uppermost portion of the wall material 28. An upper portion of the wall material 28 is provided with a latching portion 29 formed by projecting a plurality of longitudinal roots 24 forward. As shown in FIG. 10, the first wire mats 20 are arranged in a plurality of sideways in each layer. A wall surface reinforcing back mat (30) is joined to the back of the wall material (28). After the back mat (30), the nonwoven fabric (40) is bonded to prevent soil erosion. Behind the nonwoven fabric (40), a vegetation mat (50) for preventing greening of the wall and leakage of the soil is combined. The back mat 30, the nonwoven fabric 40, and the vegetation mat 50 may be joined together by binding to the wall material 28 with a binding strap such as a wire.

12 shows an extended stiffener 60 connected to the rear side of the bottom material 26. As shown in Fig. One end portion of the plurality of longitudinal roots 64 is bent so as to protrude upward so that the connecting portion 66 protrudes from the bottom to the top between the two transverse roots 22 of the bottom member 26. By doing so, the connecting portion 66 protrudes above the longitudinal roots 24. In this state, an elongated insertion rod 70 is inserted into the space formed by the longitudinal roots 24 and the connecting portions 66, so that the extended mat 66 and the first wire mat 20 are engaged.

A second wire mat (20b) is provided with a lower auxiliary mat (30a), and the assistant top mat (30b), and a lower non-woven fabric (40a), a lower vegetation mat (50a) and an upper non-woven fabric as shown in Figure 11 ( 40b, an upper vegetation mat 50b, a connecting support rod 90, and an embankment 15a. The connection support rods 90, 90a, 90b connecting the wall member 28b and the bottom member 26b are bent at both ends to form the rings 92, 92a, 92b. The rings at both ends are caught at the intersection of the transverse root 22b and the longitudinal root 24b in the wall material 28b and the floor material 26b. The connecting rods 90, 90a, 90b may be provided with length adjusting nuts. The length of the connecting rod 90, 90a, 90b can be slightly adjusted by rotating the length adjusting nut.

However, since the bottom material and the wall material are formed integrally with each other, it is very difficult to pull the wall material forward (that is, in the direction away from the retaining wall wall), and there is a problem that the vegetation mat can not be replaced at maintenance, .

In addition, since it is required to bend a large amount of force when holding the slope of the wall surface of the wall material during construction, it is difficult to adjust the slope freely.

Disclosure of the Invention The present invention has been devised to solve the above-described problems, and provides a wire mat for a reinforcing earth retaining wall and a method for constructing a reinforcing earth retaining wall using the same, which can easily adjust the inclination It has its purpose.

In order to achieve the above object, a wire mat for a reinforcing earth retaining wall of the present invention comprises a wall material on a back surface, a floor material disposed on the floor, and a hinge portion for supporting the wall material so as to be pivotable with respect to the floor material.

According to this configuration, the wall member can be pivoted forward, the angle of the wall member can be freely adjusted, and the vegetation mat can be easily replaced at maintenance.

In the above-described configuration, the hinge portion is preferably composed of the wall surface material, the ring formed on the bottom material, and the hinge pin inserted into the ring, in view of simplicity of the connection structure.

When a reinforcing support bar for reinforcing the wall material is further provided on the bottom material, conduction (forward inclination) of the wall material can be securely prevented.

Wherein the reinforcing support bar is constituted by a horizontal bar which is hooked to the longitudinal roots of the floor material, an extension bar which extends at both ends of the horizontal bar, and a hook which is formed at the tip of the extension bar and hooks on the transverse side of the wall material, Since it is installed only when it is hooked to the wall material, it is not only easy to construct but also can support an extended reinforcing material such as geogrid.

The reinforcing support bar may include a horizontal bar extending in a longitudinal direction of the bottom material, an extension bar extending and bending at both ends of the horizontal bar, and a reinforcing bar provided between a front end of the extension bar and a transverse wall of the wall material, The hook is constituted by an upper piece, a lower piece, and a connecting piece connecting the upper piece and the lower piece and having a groove for rotatably receiving the tip of the extending bar, In addition to one effect, the reinforcing bar is released from the wall by simply turning the ring, which is more convenient for maintenance.

According to another aspect of the present invention, there is provided a method of constructing a reinforced earth retaining wall, comprising the steps of: preparing a wire mat comprising a bottom material, a wall material, and a hinge portion turning the wall material against the bottom material; A step of constructing a basic hole; Installing the wire mat on the basic hole; Installing a vegetation mat on the back surface of the wall material; And a step of setting up and completing the embankment.

In the above-described configuration, it is preferable that the method further comprises a repairing step of replacing the vegetation mat after turning the wall material.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, wherein like reference numerals are used to designate like or corresponding parts throughout the drawings and detailed description thereof is omitted.

FIG. 1 is a perspective view showing a wire mat for reinforcing earth retaining wall according to a preferred embodiment of the present invention, FIG. 2 is an enlarged view of part A of FIG. 1, FIG. 4 is a perspective view showing the reinforcing support bar of FIG. 1. FIG.

1 to 4, the wire mat 100 of the first embodiment includes a wall member 110, a floor member 160, a hinge unit 160 connecting the wall member 110 and the floor member 160, (120).

The wall member 110 has a plurality of transverse roots 111 and a plurality of longitudinal roots 113 in a lattice form. On the rear surface of the wall material 110, vegetation mats 40a and 40b are provided. The vegetation mats (40a, 40b) are for the purpose of greening the walls and preventing the leakage of the soil, and they are mainly composed of chemical fiber, coconut fiber, natural fiber, artificial soil, seed and nonwoven fabric. It is preferable that the planting non - woven fabrics 40, 40a, 40b for preventing soil erosion are installed on the wall material 110 before the vegetation mat 40a, 40b is installed. The vegetable nonwoven fabric (40, 40a, 40b) is mainly formed by molding a high-density polyethylene into a net shape. In addition, it is preferable that wall backing back mats (30, 30a, 30b) are additionally provided on the back surface of the wall material (110).

In addition, it is preferable that a connection loop 112 is formed on at least one of the left side and the right side of the transverse root 111 of the wall material 110. The connection ring 112 is convenient when the wall member 110 and the wall member 110 are connected to each other in the horizontal direction, thereby improving the workability.

Likewise, the connection ring 114 is preferably formed on the longitudinal side 113 of the wall member 110. This connection ring 114 is convenient when the wall member 110 and the wall member 110 are connected to each other in the longitudinal direction, thereby improving the workability. These connecting rings 112 and 114 are preferably hook-shaped.

Because of the configuration of the coupling rings 112 and 114, it is not necessary to use a binding force to bind the coupling ropes High seas soil (Over 15M) The  There is no risk of safety accidents, and construction time is relatively short, which is relatively economical.

On the other hand, it is preferable that a floor material 160 is installed on the floor. The floor material 160 is a reinforcing material having a lattice shape of a transverse root 161 and a longitudinal root 163. The frictional resistance is applied to the longitudinal roots 163 of the floor material 160 and the transverse roots 161 of the floor material 160, The pressure resistance force acts. These resistance forces act more than the earth pressure and can satisfy the stability condition of the retaining wall.

When the length of the bottom member 160 is short, as shown in Figs. 1 and 5, the reinforcing member can be connected and extended in the longitudinal direction. As this extended reinforcement, a steel reinforcement material such as geogrid 180 (380) or a flooring material may be used.

The wall material (110) and the floor material (160) are mainly made of galvanized iron wire.

The hinge part 120 includes a circular hinge ring 120a formed on the lower side of the longitudinal root 113 of the wall material 110 and a circular hinge ring 120b formed on one side of the longitudinal root 163 of the floor material 160 And the circular hinge ring 120a and the circular hinge ring 120b are connected by a connecting hinge reinforcement 170. [ That is, after the circular hinge ring 120a and the circular hinge ring 120b are brought into contact with each other, the connection hinge reinforcement 170 is inserted into the hinge rings 120a and 120b to be connected. The connecting hinge reinforcement 170 preferably has a hook 171 formed on the circular hinge ring.

The hinge portion 120 allows the wall material 110 to be freely adjusted to a desired slope after the floor material 160 is placed on the floor.

Further, due to the structure of the hinge portion 120, the wall material 110 can be easily pulled forward during maintenance after the reinforced earth retaining wall is constructed, and the vegetation mat can be replaced.

On the other hand, it is preferable that a reinforcing support bar 130 is installed to prevent the wall material 110 from being tilted (spreading) by the buried embankment or the like.

4, the reinforcing supporting bar 130 includes a horizontal bar 131 which is hooked to the vertical roots 163 of the floor material 160 and a plurality of extending bars 133, and a ring 135 that rotatably supports the distal ends of the extension bars 133. As shown in Fig. That is, the reinforcing support bar 130 is formed of a 'C' -shaped connection material as a whole.

The loop 135 is hooked on the transverse roots 111 of the wall material 110 and the wall material 110 is supported by the floor material 160.

The ring 135 is constituted by a movable ring 135 which is rotatably supported with respect to the tip of the extension bar 133. That is, each of the movable hooks 135 is composed of an upper piece 136, a lower piece 137, and a connecting piece 138 connecting the upper piece 136 and the lower piece 137. The connecting piece 138 is formed with a groove 139 for rotatably housing the tip of the extending bar 133.

Since the reinforcement supporting bar 130 is shaped like a 'C' shape, the horizontal bar 131 of the reinforcement supporting bar 130 can be inserted into the transverse roots 161 of the flooring 160 It is easy to hook up and easy to connect. 1 and 2, when the geogrid 180 is placed under the floor material 160 and the geogrid 180 is pierced by the extended bar 133 and then the movable loop 135 is connected, A separate part for connecting the horizontal bar 131 is omitted in the geogrid 180 to improve the workability and economical efficiency. Of course, it is possible to break through the geogrid 180 without removing the movable ring 135. This is because the geogrid 180 is a nonwoven fabric and can be drawn between the grids.

Further, since the movable loop 135 can rotate with respect to the extending bar 133, when the vegetation mat is replaced, if the movable loop 135 is turned to the side, the locked state is immediately released.

FIG. 5 is a perspective view illustrating a wire mat for reinforcing earth retaining walls according to another preferred embodiment of the present invention, FIG. 6 is an enlarged view of a portion B of FIG. 5, and FIG. 7 is a cross- It is a perspective view.

5 to 7, the wire mat 300 of the second embodiment is similar in structure and function to the wire mat 100 of the first embodiment, but has a hinge portion 320 and a reinforcing support bar 330).

That is, the wire mat 300 comprises a wall material 310, a floor material 360, and a hinge portion 320. The wall member 310 is in the form of a lattice between a transverse root 311 and a longitudinal root 313 in the same manner as the wall member 110. A hook 312 is provided on the right side or left side of the transverse root 311, A hook 314 is formed. Also, the flooring material 360 is in the form of a lattice of the transverse roots 361 and the longitudinal roots 363, like the flooring material 160.

6, the hinge portion 320 includes a hook-shaped or U-shaped hinge ring 320a formed on the lower side of the longitudinal ribs 313 of the wall material 320, Hook or U-shaped hinge ring 320b formed on the lower side of the hinge hook 320a and a connecting hinge reinforcement 370 connecting the hinge rings 320a and 320b. That is, after connecting the hinge ring 320a and the hinge ring 320b to each other, the connecting hinge reinforcement 370 is inserted into the ring and connected. Of course, it is preferable that the connection hinge reinforcement 370 is provided with a hook 371 hooked on the hook loop.

The reinforcing supporting bar 330 is also a generally U-shaped connecting member like the reinforcing supporting bar 130 and includes a horizontal bar 331 which is caught by the longitudinal roots 363 of the floor covering 360, An extension bar 333 which extends at both ends of the extension bar 333 and a hook 335 which is formed at the tip of the extension bar 333 and is hooked on the transverse root 311 of the wall material 310. The ring 335 functions as a hook-shaped fixing ring 335, unlike the rotating movable ring 135.

It is preferable that the reinforcing supporting bar 330 in this case is formed so as not to be disturbed from the transverse rope 311 by extending the fixing ring 335 when the wall material 310 is pulled forward and maintained.

Hereinafter, the method of constructing a reinforced earth retaining wall will be described with reference to the above-described construction, assuming that a three-layer embankment layer is constructed.

8 is a construction flowchart of a reinforced earth retaining wall according to a preferred embodiment of the present invention.

First, a large number of wire mats using a hinge portion are prepared for the wall material and the floor material. Prepare the foundation at the site where the reinforced earth retaining wall is to be constructed. After foundation work such as excavation and suspension, basic foundation is enough to compose without irregularity and lay foundation stone. Then, if necessary, prevent the rain from penetrating into the embankment. The term 'blind culvert drainage' refers to a drainage structure that treats the water that has flowed into the ground. It refers to the water that flows into the road surface or flows into the road surface through the cleavage line, and is led to other drainage structures by using the culvert. Water collected along the road surface and water flowing along the waterway should be treated with separate drain pipes or culvert.

When the basic hole is completed, a first wire mat set at a predetermined inclination is provided through the hinge portion. The first wire mats are disposed with a slight interval along the lateral direction. At this time, the inner curve overlaps the back side of the wire mat and the outer curve is set down (see FIG. 6 of the prior art). When the first wire mats are installed, a reinforcing material (geogrid or steel reinforcing material) is connected to the bottom material.

Then, a vegetation mat and a nonwoven fabric for preventing soil erosion are installed and fixed in order on the wall material . It is advisable to tie a large number of swabs to many places so that the vegetation mats do not move during compaction. Next, the first embankment is laid from the side of the wall surface. It is preferable to use a small compaction unit near the wall surface and use a compaction roller for the remaining part of the embankment.

When the first embedding material is completed, the second wire mat is fixed to the first wire mat. This connection fixation may be performed by binding the transverse root of the second wire mat and the longitudinal axis of the wall surface material of the first wire mat, or by connecting the upper or lower connecting link of the wall surface material to the transverse root of another wall surface material, You can hang it at the intersection of the muscles. Then, the above construction is repeated to complete the second embankment and the third embankment.

At this time, the reinforcement supporting bar 130 or 330 is installed before the first embedding material, the second embedding material, and the third embedding material are installed, and it is possible to firmly prevent the wall material from tilting (spreading) have.

In the case of the reinforcing support bar 130, when the vegetation mat does not grow after the completion of the reinforced earth retaining wall after the completion of the reinforcing earth retaining wall, the movable loop 135 is rotated to release it to the transverse root 111 The vegetation mat can be easily replaced by pulling the wall member 110 toward the hinge unit 120 forward.

In the case of the reinforcing supporting bars 330, the fixing rings 335 may be pushed forward by turning the wall material 310 and then the vegetation mat may be exchanged.

The wire mat for reinforcing earth retaining wall according to the present invention and the method for constructing the reinforcing earth retaining wall using the wire mat for reinforcing earth retaining wall according to the present invention are not limited to the above embodiments but can be variously modified within the scope of the technical idea of the present invention.

As apparent from the above description, the reinforcing earth retaining wall wire net and the reinforcing earth retaining wall construction method using the same according to the present invention have the following effects.

Since the wall material is joined to the bottom material by the hinge part, if there is a vegetative mat to be replaced, the wall material of the part is pulled forward by the hinge part, and maintenance is extremely convenient.

In addition, since the reinforcement supporting bars are integrally formed in a "C" shape, the horizontal bars of the reinforcing support bars are caught by the transverse roots of the bottom material when the bottom reinforcement bars are pushed up from below.

In addition, since the reinforcement support bar is formed as a unitary shape having a "C" shape, the horizontal bar is caught by the transverse roots of the floor material while the geogrid is bored while the geogrid is placed under the bottom material, A connecting member for connecting the geogrid is unnecessary and the workability can be further increased.

The hooks of the reinforcing supporting bars are composed of an upper piece, a lower piece, and a connecting piece having grooves for connecting the upper piece and the lower piece while rotatably receiving the tip of the extending bar. Thus, It is possible to further increase the construction speed.

Claims (7)

delete delete delete delete A wall material on the back of which a vegetation mat is installed, A floor material disposed on the floor, A hinge portion for supporting the wall material so as to be pivotable with respect to the floor material, And a reinforcing support member for supporting and supporting the wall member against the bottom material, Wherein the reinforcing support bar is provided between a horizontal bar extending in a longitudinal direction of the floor material, an extension bar extending and bending at both ends of the horizontal bar, And a support ring Wherein the loop comprises an upper piece, a lower piece, and a connecting piece having a groove formed therein for connecting the upper piece and the lower piece and rotatably receiving the tip of the extending bar. delete delete

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