KR101793648B1 - Anchors and their combined drainage system construction method for retaining wall - Google Patents

Anchors and their combined drainage system construction method for retaining wall Download PDF

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Publication number
KR101793648B1
KR101793648B1 KR1020150105154A KR20150105154A KR101793648B1 KR 101793648 B1 KR101793648 B1 KR 101793648B1 KR 1020150105154 A KR1020150105154 A KR 1020150105154A KR 20150105154 A KR20150105154 A KR 20150105154A KR 101793648 B1 KR101793648 B1 KR 101793648B1
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South Korea
Prior art keywords
drainage
buried
retaining wall
drain
fusing
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KR1020150105154A
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Korean (ko)
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KR20170012820A (en
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신종호
김경철
김호종
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건국대학교 산학협력단
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B11/00—Drainage of soil, e.g. for agricultural purposes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E02D29/0225—Retaining or protecting walls comprising retention means in the backfill
    • E02D29/0233—Retaining or protecting walls comprising retention means in the backfill the retention means being anchors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Agronomy & Crop Science (AREA)
  • Soil Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Retaining Walls (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The present invention relates to a floor reinforcement combined drainage system for a retaining wall structure that can function as an anchor and perform a drainage function by using a fiber reinforced plastic having a corrosion resistance while simplifying the structure of the retaining wall, And a method of constructing the same.
According to an aspect of the present invention, there is provided a drainage system for a ground reinforcement for a retaining wall structure, comprising: a retaining wall having a predetermined shape; A buried portion horizontally installed inside the retaining wall; A drain part connected to an end of the buried part horizontally; A fixing unit horizontally connected to an end of the drainage unit; And the slope surface of the fusing unit is buried.
According to another aspect of the present invention, there is provided a method of constructing a drainage system for reinforcing a ground for a retaining wall structure, the method comprising: installing a fusing unit on a slope; Installing a retaining wall by pouring and curing concrete in a state where a buried portion is embedded in a portion spaced apart from the slope ground by a predetermined distance; Providing a drainage portion between the buried portion and the fusing portion; And backfilling the back surface of the retaining wall with gravel.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage system for reinforcing a ground for a retaining wall structure,

The present invention relates to a drainage system for a ground reinforcement for a retaining wall structure and a method of constructing the drainage system, and more particularly, to a method of constructing a drainage system for a retaining wall structure capable of performing a drainage function by using a fiber- A combined drainage system and a construction method thereof.

 A typical retaining wall has a separate drain for drainage and an anchor for support.

This complicates the construction of the retaining wall, increasing the air, reducing the efficiency of the worker, and increasing unnecessary elements in the retaining wall, complicating the overall structure of the retaining wall.

That is, the conventional retaining wall is provided with a drain for drainage.

Such drainage is mainly made of PVC, and it is buried in a retaining wall and drained.

Such a drain hole has no function as reinforcement of a retaining wall, and there is only a function for drainage.

On the other hand, it is possible to weaken the mechanical ability of the back wall of the retaining wall due to the installation of the drainage hole on the retaining wall.

Accordingly, anchors may be installed on the retaining wall to compensate the piping separately.

Here, the load applied to the entire retaining wall at the back surface of the retaining wall is about 6 times greater when the hydraulic pressure is applied and when the pressure is not applied, so that the function of the drainage hole at the retaining wall is very large.

In the case of the ground anchor, it is installed to reinforce the retaining wall. In order to install the ground anchor, the perforation, the anchor insertion, the grouting, and the anchor head are fixed.

Here, the above-mentioned ground anchor plays a role as a reinforcing material of the retaining wall, but it has a disadvantage that the construction step is complicated and the construction cost is increased.

In addition, since the conventional ground wall of the retaining wall is pierced, the ground surface is inevitably disturbed, and settlement of the ground surface is inevitable.

Accordingly, if the disadvantages of the above-described retaining walls are complemented and the construction can be combined and operated, the construction can be simplified, the workability can be increased, and the construction cost can be saved.

Registration No. 10-0594641 (Registered on Jun. 21, 2006) Registration No. 10-1058561 (Registered on August 16, 2011) Registration No. 10-0902308 (Registered on June 4, 2009) Registration No. 10-0710867 (Registered on Apr. 17, 2007) Published Patent No. 10-2011-0016223 (Published on February 17, 2011)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an anchor for an automobile, which is capable of simplifying the structure of a retaining wall and having corrosion resistance, The present invention provides a drainage system for a ground reinforcement for a retaining wall structure and a method of constructing the drainage system.

According to an aspect of the present invention, there is provided a drainage system for a ground reinforcement for a retaining wall structure, comprising: a retaining wall having a predetermined shape; A buried portion horizontally installed inside the retaining wall; A drain part connected to an end of the buried part horizontally; A fixing unit horizontally connected to an end of the drainage unit; And the slope surface of the fusing unit is buried.

According to another aspect of the present invention, there is provided a method of constructing a drainage system for reinforcing a ground for a retaining wall structure, the method comprising: installing a fusing unit on a slope; Installing a retaining wall by pouring and curing concrete in a state where a buried portion is embedded in a portion spaced apart from the slope ground by a predetermined distance; Providing a drainage portion between the buried portion and the fusing portion; And backfilling the back surface of the retaining wall with gravel.

INDUSTRIAL APPLICABILITY As described above, the drainage system and the construction method of the ground reinforcement for the retaining wall structure according to the present invention can be used as an anchor by using a fiber reinforced plastic which has corrosion resistance while satisfying the structure of the retaining wall, It is possible to simultaneously perform the drainage function and the effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram showing a drainage system for a ground reinforcement for a retaining wall structure according to the present invention;
2 is a schematic view showing a first embodiment of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention,
3 is a schematic view showing a second embodiment of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention,
FIG. 4 is a schematic view showing a third embodiment of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention.
FIG. 5 is a perspective view showing a retaining wall embedded portion of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention,
6A to 6D are process charts showing a procedure for installing a retaining wall embedded in a drainage system for a ground reinforcement for a retaining wall structure according to the present invention,
FIG. 7 is a perspective view showing a drainage section of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention,
8 is a detailed view showing a drainage unit of a drainage system for a ground reinforcement for a retaining wall structure according to the present invention,
FIG. 9 is a detailed view showing the fixing unit of the first embodiment of the drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention,
10 is a detailed view showing a fixing unit of a second embodiment of a drainage system for a floor reinforcement for a retaining wall structure according to the present invention,
11 is a detailed view showing a fixing unit of a third embodiment of a drainage system for a floor reinforcement for a retaining wall structure according to the present invention,
12 is a perspective view illustrating a connection state of a retaining wall embedded portion and a drain portion of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention,
FIG. 13 is a cross-sectional view showing a connection state of a retaining wall embedded portion and a drain portion of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention.
FIG. 14 is a perspective view illustrating a connection state between drains in a drainage system for a ground reinforcement for a retaining wall structure according to the present invention. FIG.
15 is a cross-sectional view illustrating a connection state between drainage portions of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention.
FIG. 16 is a perspective view showing a connection state of a drainage part and a fusing part of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention. FIG.
17 is a cross-sectional view showing a connection state of a drainage part and a fusing part of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention,
18A to 18F are process drawings showing a construction procedure of a first embodiment of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention,
Figs. 19A to 19D are process drawings showing a construction procedure of a second embodiment of a drainage system for a ground reinforcement for a retaining wall structure according to the present invention, Fig.
20A to 20F are process drawings showing a construction procedure of a third embodiment of a drainage system for a ground reinforcement for a retaining wall structure according to the present invention.

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

[First Embodiment]

FIG. 1 is a conceptual view showing a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention, and FIG. 2 is a schematic view showing a first embodiment of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention.

As shown in these drawings, the drainage system S for combined use with the ground reinforcement for a retaining wall structure according to the present invention comprises a retaining wall 100 having a predetermined shape; A buried portion 200 horizontally installed inside the retaining wall 100; A drain 300 connected horizontally to an end of the buried part 200; A fusing unit 400 horizontally connected to an end of the drainage unit 300; And a slope ground 500 in which the fusing unit 400 is embedded.

That is, the drainage system (S) serving as a ground reinforcement for a retaining wall structure according to the present invention includes a retaining wall 100, a buried portion 200, a drainage portion 300, a fixing portion 400 and a slope ground 500, .

Here, the retaining wall 100 is a structure made to prevent the collapse of the soil from behind, and is a structure that maintains stability by the self weight of the retaining wall 100 against the rear earth pressure.

Here, the type of the retaining wall 100 is as follows.

The gravity wall is made of unguarded concrete, is stable by its own weight, and is usually used up to a height of 3m.

The cantilever retaining wall is made of reinforced concrete and is called an inverted T-type retaining wall. It is the most commonly used retaining wall, usually used at a height of about 3 to 7.5 meters. The stem, heel and toe of the retaining wall each act as a cantilever.

A counterfort wall is a retaining wall reinforced by installing a counterfort at a certain interval on the back surface of the cantilever retaining wall. Wherein the subwall acts as a tension tie. It is economical to use it when the height exceeds 7.5m.

The front wall retaining wall is a retaining wall reinforced by installing a buttress at regular intervals on the cantilever retaining wall. At this time, since the subwall acts as a compression strut, it is more efficient and economical than the back wall. However, the back wall retaining wall is used more than the front wall retaining wall. The reason for this is that the front wall occupies the entire space, whereas the rear wall does not have such drawbacks.

In addition, an L-shaped retaining wall or an inverted L-shaped retaining wall is used.

The steel pipe 210 is embedded in the concrete of the retaining wall 100 and the concrete pipe 210 is embedded with the concrete when the retaining wall 100 is constructed. A protrusion 220 is integrally formed on the surface of the steel pipe 210 to increase adhesion with concrete. A thread 230 is formed on the inner side of the drainage side end of the steel pipe 210.

Here, the thread 230 is inserted with a rubber stopper 240 having a thread formed on the outer circumferential surface thereof.

That is, in the construction of the embedded part 200 of the retaining wall 100, a mold 900 is installed on a ground, a steel pipe 210 is installed at a predetermined position of the mold 900, After the rubber stopper 240 is inserted into one side of the mold 900 and the concrete is poured and cured in the mold 900, the mold 900 is demoulded, the rubber stopper 240 is removed, and the residual concrete is removed .

That is, a reinforcing bar (not shown) is placed in the mold 900 before the concrete for installing the retaining wall 100 is installed, a steel pipe 210 is installed around the reinforcing steel pipe, and when the concrete is poured into the steel pipe 210, A rubber stopper 240 is inserted into one side of the steel pipe 210 so that the rubber stopper 240 is not inserted.

At this time, the state in which the rubber stopper 240 is in close contact with the mold 900 should be maintained.

Thereafter, when concrete is put and cured, the mold 900 is demolded so that the pressed rubber stoppers 240 are raised again so that the embedded position of the steel pipe 210 can be easily found on the back surface of the retaining wall 100 5 and 6, the ridge may be formed not in such a manner that the outer surface of the rubber ridge rises but may be formed in the protrusion (not shown in FIG. 5) 241 are raised as the mold is removed as shown in Fig. 6, which is an effect exerted on the rubber-like rubber material itself and the rubber-like rubber material itself formed with the protrusion 241 shown in Fig.

After the rubber stopper 240 is located, the residual concrete is removed, and the rubber stopper 240 is removed. Thus, the steel pipe 210 in the retaining wall 100 is completely buried.

The drainage unit 300 is formed of a fiber-reinforced plastic pipe 310, and a thread 320 is formed on the outer circumferential surfaces of the pipe pipe 310 at both ends.

Here, the drain portion 300 is composed of at least one or more.

That is, the drainage unit 300 is an element constituting the free ends of drainage and ground reinforcement anchors.

Since the drainage part 300 is made of fiber reinforced plastic (FRP) and has a certain tensile strength, it functions as a free reinforcement material of the ground reinforcement anchor.

Further, it is noted that the fiber-reinforced plastic is resistant to rust and other materials coming from the upper portion of the retaining wall 100 because of its corrosion resistance, and thus can be used for a long period of time.

The fiber-reinforced plastic has threads (320) formed on the outer circumferential surfaces at both ends for connection with the drain connection (700).

Particularly, the drainage unit 300 is manufactured in the form of a fiber-reinforced plastic pipe tube 310, and the hollow-type nonwoven fabric filter 330 is built in the fiber-reinforced plastic pipe pipe 310, Thereby blocking the inflow of the ground particles flowing along with the inflow water through the inflow port 310.

A buried portion connecting portion 600 connecting the buried portion 200 and the fiber reinforced plastic buried pipe 310 is provided and a thread is formed inside the buried portion connecting portion 600.

A rubber plug 240 is installed in the concrete embedded portion 200 of the drainage unit 300 before the concrete is installed when the retaining wall 100 is installed.

This is to increase the workability by allowing the installation position of the buried portion 200 to be recognized when the mold 900 is removed after the concrete is laid when the retaining wall 100 is installed.

A drain connection part 700 is connected between the drain parts 300.

The fixing unit 400 is composed of a rod 410 having a predetermined diameter and a predetermined length. The distal end of the rod 410 is conically formed with a distal end 420, (440) is formed on the outer peripheral surface of the rear end of the rod (410).

That is, the fusing unit 400 includes a rod 410 and a screw blade 430 at the tip of the rod 410.

The screw vane 430 is fixed to the slope ground 500 while rotating the fixing unit 400 without additional excavation.

A fusing part connection part 800 is connected between the fiber plastic perforated pipe 310 of the drain part 300 and the fusing part 400 and receives a load through the fusing part connection part 800.

Meanwhile, in the combined drainage system for ground reinforcement for a retaining wall structure according to the present invention, the connecting part functions to connect the respective components (600, 700, 800).

In order to connect the steel pipe 210 embedded in the concrete of the retaining wall 100, the end of the buried portion connection portion 600 is connected to the male thread acid. In the case of the drain portion 200, Threaded.

Thus, the buried portion connecting portion 600 is similarly tightened or loosened when it is rotated in one direction. That is, the directions of the threads are opposite to each other.

Also, the drain connection part 700 used for connection between the drain part 300 and the drain part 300 is connected with only a female thread in consideration of structural stability, and the directions of the threads are the same.

The fusing unit connection unit 800 used between the drainage unit 300 and the fusing unit 400 is a rod-shaped rod because it does not perform a drainage function.

Hereinafter, the construction of the drainage system S serving as a ground reinforcement for a retaining wall structure according to the present invention will be described.

18A to 18F are process diagrams showing a construction procedure of a first embodiment of a drainage system for a ground reinforcement for a retaining wall structure according to the present invention.

As shown in these drawings, a method of constructing a drainage system for reinforcing a ground for a retaining wall structure according to the present invention includes the steps of installing a fixing unit 400 on a slope ground 500; Installing a retaining wall (100) by pouring and curing concrete in a state where a buried portion (200) is embedded in a portion spaced apart from a slope ground (500) at a predetermined interval; Installing a drainage part (300) between the buried part (200) and the fusing part (400); And backfilling the back surface of the retaining wall 100 with soil.

That is, a method of constructing a drainage system for reinforcing a ground for a retaining wall structure according to the present invention includes the steps of installing a fusing unit 400; A retaining wall (100); A step of installing drainage part 300; And a backfill embankment step sequentially.

The fusing unit 400 is installed horizontally on the slope ground 500 in the step of installing the fusing unit 400.

The method for constructing the retaining wall 100 includes installing a mold 900 and placing a reinforcing bar on the mold 900 and installing the buried portion 200 at a predetermined position of the reinforcing bar 900, The concrete is poured and cured to construct the retaining wall 100.

The step of installing the drainage part 300 is a step of installing the fiber reinforced plastic pipe 310.

At this time, the buried portion connecting portion 600 is connected to the buried portion 200 of the retaining wall 100 first.

The drainage unit 300 and the fusing unit 400 remain unconnected.

The drain connection unit 700 is connected to the end of the drainage unit 400 on the side of the fixing unit 400.

(At this time, if you need several pipes, connect them in advance.)

The step of loosening the buried portion connection portion 600 and connecting the fusing portion connection portion 800 with the fusing portion 400 may be performed by slightly loosening the buried portion 200 and the drain portion connection portion 700 of the retaining wall 100, (700) is contacted to the fixing unit (400).

The drainage unit 300 and the fusing unit connection unit 800 are connected while the buried unit 200 and the drainage unit connection unit 700 are loosened.

The step of simultaneously tightly connecting the buried portion connection portion 600 and the fusing portion connection portion 800 tightens both the connection portions 600 and 800 when the drain portion 300 and the fusing portion connection portion 800 are connected to each other.

At this time, the drainage part 300 is put in a tensile state, so that the supporting part 300 is exerted as a ground reinforcement anchor.

After finishing the backfill, the backfill is finished and the construction is completed.

That is, according to the present invention, a method of constructing a drainage system for a ground reinforcement for a retaining wall structure is provided with a fusing unit 400 installed on a slope ground 500 and a buried part 200 is formed on a part of the slope ground 500, The retaining wall 100 is installed by pouring and curing the concrete in a state where the concrete is embedded and the drainage part 300 is installed between the buried part 200 and the fusing part 400. The buried part connection part 600 is loosened After the fusing part connecting part 800 is connected to the fusing part 400 and the fusing part connecting part 600 and the fusing part connecting part 800 are joined at the same time, back fusing gypsum is formed on the back surface of the retaining wall 100, do.

[Second Embodiment]

3 is a schematic view showing a second embodiment of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention.

As shown in this drawing, the drainage system S for combined use with the ground reinforcement for a retaining wall structure according to the present invention comprises a retaining wall 100 having a predetermined shape; A buried portion 200 horizontally installed inside the retaining wall 100; A drain 300 connected horizontally to an end of the buried part 200; A fusing unit 400 horizontally connected to an end of the drainage unit 300; And a clay ground 510 in which the fusing unit 400 is embedded.

That is, the drainage system S for combined use with the ground reinforcement for a retaining wall structure according to the present invention is constructed such that the retaining wall 100, the buried portion 200, the drainage portion 300, the fixing portion 400, .

Here, the retaining wall 100 is a structure made to prevent the collapse of the soil from behind, and is a structure that maintains stability by the self weight of the retaining wall 100 against the rear earth pressure.

The type of the retaining wall 100 is as follows.

The gravity wall is made of unguarded concrete, is stable by its own weight, and is usually used up to a height of 3m.

The cantilever retaining wall is made of reinforced concrete and is called an inverted T-type retaining wall. It is the most commonly used retaining wall, usually used at a height of about 3 to 7.5 meters. The stem, heel and toe of the retaining wall each act as a cantilever.

A counterfort wall is a retaining wall reinforced by installing a counterfort at a certain interval on the back surface of the cantilever retaining wall. Wherein the subwall acts as a tension tie. It is economical to use it when the height exceeds 7.5m.

The front wall retaining wall is a retaining wall reinforced by installing a buttress at regular intervals on the cantilever retaining wall. At this time, since the subwall acts as a compression strut, it is more efficient and economical than the back wall. However, the back wall retaining wall is used more than the front wall retaining wall. The reason for this is that the front wall occupies the entire space, whereas the rear wall does not have such drawbacks.

In addition, an L-shaped retaining wall or an inverted L-shaped retaining wall is used.

The steel pipe 210 is embedded in the concrete of the retaining wall 100 and the concrete pipe 210 is embedded with the concrete when the retaining wall 100 is constructed. A protrusion 220 is integrally formed on the surface of the steel pipe 210 to increase adhesion with concrete. A thread 230 is formed on the inner side of the drainage side end of the steel pipe 210.

Here, the thread 230 is inserted with a rubber stopper 240 having a thread formed on the outer circumferential surface thereof.

That is, in the construction of the embedded part 200 of the retaining wall 100, a mold 900 is installed on a ground, a steel pipe 210 is installed at a predetermined position of the mold 900, After the rubber stopper 240 is inserted into one side of the mold 900 and the concrete is poured and cured in the mold 900, the mold 900 is demoulded, the rubber stopper 240 is removed, and the residual concrete is removed .

That is, a reinforcing bar (not shown) is placed in the mold 900 before the concrete for installing the retaining wall 100 is installed, a steel pipe 210 is installed around the reinforcing steel pipe, and when the concrete is poured into the steel pipe 210, A rubber stopper 240 is inserted into one side of the steel pipe 210 so that the rubber stopper 240 is not inserted.

At this time, the state in which the rubber stopper 240 is in close contact with the mold 900 should be maintained.

Thereafter, when concrete is put and cured, the mold 900 is demolded so that the pressed rubber stoppers 240 are raised again so that the embedded position of the steel pipe 210 can be easily found on the back surface of the retaining wall 100 do.

After the rubber stopper 240 is located, the residual concrete is removed, and the rubber stopper 240 is removed. Thus, the steel pipe 210 in the retaining wall 100 is completely buried.

The drainage unit 300 is formed of a fiber-reinforced plastic pipe 310, and a thread 320 is formed on the outer circumferential surfaces of the pipe pipe 310 at both ends.

Here, the drain portion 300 is composed of at least one or more.

That is, the drainage unit 300 is an element constituting the free ends of drainage and ground reinforcement anchors.

It is fabricated using FRP (Fiber Reinforced Plastics) and has a tensile strength to some extent, so it functions well as a free reinforcement material for reinforced anchors.

Further, it is noted that the fiber-reinforced plastic is resistant to rust and other materials coming from the upper portion of the retaining wall 100 because of its corrosion resistance, and thus can be used for a long period of time.

The fiber-reinforced plastic has threads (320) formed on the outer circumferential surfaces at both ends for connection with the drain connection (700).

Particularly, the drainage unit 300 is manufactured in the form of a fiber-reinforced plastic pipe tube 310, and the hollow-type nonwoven fabric filter 330 is built in the fiber-reinforced plastic pipe pipe 310, Thereby blocking the inflow of the ground particles flowing along with the inflow water through the inflow port 310.

A buried portion connecting portion 600 connecting the buried portion 200 and the fiber reinforced plastic buried pipe 310 is provided and a thread is formed inside the buried portion connecting portion 600.

A rubber plug 240 is installed in the concrete embedded portion 200 of the drainage unit 300 before the concrete is installed when the retaining wall 100 is installed.

This is to increase the workability by allowing the installation position of the buried portion 200 to be recognized when the mold 900 is removed after the concrete is laid when the retaining wall 100 is installed.

A drain connection part 700 is connected between the drain parts 300.

The fusing unit 400 includes a rod 410 having a predetermined diameter and a predetermined length. The fusing unit 400 includes a thread 440 at both ends of the rod 410. The rod 410 is fixed at the tip of the rod 410 And a fixation plate fixing nut 460 is screwed to one side of the screw 440 of the disk-shaped fixing plate 450. As shown in FIG.

That is, the fusing unit 400 includes a rod 410 having a rod shape, a disk-shaped fusing plate 450 at one end of the rod 410, a fusing plate fixing nut 460 to the disk-shaped fusing plate 450, Is screwed to the rod (410).

Here, the disk-shaped fixing plate 450 replaces the screw blade 430 of the first embodiment, and is fixed using a fixing plate fixing nut 460.

The fixing plate fixing nut 460 functions to support the back surface of the disk-shaped fixing plate 450 by a hemispherical nut so that the supporting force received from the disk-shaped fixing plate 450 is applied to the ground 510 .

A fusing unit connection unit 800 is connected between the fiber plastic pipe 310 and the fusing unit 400 of the drain unit 300 and receives a load through the fusing unit connection unit 800.

Meanwhile, in the ground reinforcement combined drainage system for a retaining wall structure according to the present invention, the connection part functions to connect the respective components.

The end of the buried portion connection portion 600 is connected by a male thread to connect to the steel pipe 210 embedded in the concrete of the retaining wall 100. In the case of the drain portion 300, Connect.

Thus, the buried portion connecting portion 600 is similarly tightened or loosened when it is rotated in one direction. That is, the directions of the threads are opposite to each other.

In addition, the drain connection part 700 used for connection between the drain part 300 and the drain part 300 is connected with only a female thread in consideration of structural stability, and the direction of the thread is the same.

The fusing unit connection unit 800 used between the drainage unit 300 and the fusing unit 400 is a rod-shaped rod because it does not perform a drainage function.

Hereinafter, the construction of the drainage system S serving as a ground reinforcement for a retaining wall structure according to the present invention will be described.

19A to 19D are process drawings showing a construction procedure of a second embodiment of a drainage system for a ground reinforcement for a retaining wall structure according to the present invention.

As shown in these drawings, a method of constructing a drainage system for a ground reinforcement for a retaining wall structure according to the present invention includes the steps of placing a retaining wall 100 by placing and curing concrete in a state where a buried portion 200 is embedded on a ground ; Embedding the gravel to a predetermined installation height on the back surface of the retaining wall (100); Connecting the drainage unit 300 horizontally to the buried unit 200 and connecting the fuse unit 400 to the drainage unit 300; The step of filling up the gravel with the drainage part 300 and the fusing part 400 to the uppermost end of the retaining wall 100.

That is, a method of constructing a drainage system for a ground reinforcement for a retaining wall structure according to the present invention includes a step of constructing a retaining wall 100; Embankment stage; Connecting the buried portion 200, the drain portion 300, and the fusing portion 400; And the embankment stage.

Here, the retaining wall 100 is constructed in the same manner as the retaining wall 100 of the first embodiment. 6 (a) to 6 (d), the installation of the embedded part 200 when the retaining wall 100 is installed in the retaining wall 100 is performed.

Subsequently, the embankment step embeds the gypsum to a height at which the drainage part 300 and the fusing part 400 can be easily installed in the buried part 200 previously installed.

Then, in the step of installing the drainage part and the fusing part, the fiber reinforced plastic pipe tube 310 and the disk-shaped fusing plate 450 are installed, and the connection parts 600, 700, and 800 are all connected and tightened.

Next, the embankment step includes the drainage unit 300 and the fusing unit 400, and finishes the soil after the embankment is filled up to the uppermost end of the retaining wall 100.

[Third Embodiment]

FIG. 4 is a schematic view showing a third embodiment of a drainage system serving as a ground reinforcement for a retaining wall structure according to the present invention.

As shown in the figure, the drainage system for supporting the ground reinforcement for a retaining wall structure according to the present invention comprises a retaining wall 100 having a predetermined shape; A buried portion 200 horizontally installed inside the retaining wall 100; A drain 300 connected horizontally to an end of the buried part 200; A fusing unit 400 horizontally connected to an end of the drainage unit 300; And a rock mass 520 in which the fusing unit 400 is embedded.

That is, the drainage system for the ground reinforcement for the retaining wall structure according to the present invention is a system in which the retaining wall 100, the buried portion 200, the drainage portion 300, the fixing portion 400 and the rocking block 520 are organically coupled .

Here, the retaining wall 100 is a structure made to prevent the collapse of the soil from behind, and is a structure that maintains stability by the self weight of the retaining wall 100 against the rear earth pressure.

Here, the type of the retaining wall 100 is as follows.

The gravity wall is made of unguarded concrete, is stable by its own weight, and is usually used up to a height of 3m.

The cantilever retaining wall is made of reinforced concrete and is called an inverted T-type retaining wall. It is the most commonly used retaining wall, usually used at a height of about 3 to 7.5 meters. The stem, heel and toe of the retaining wall each act as a cantilever.

A counterfort wall is a retaining wall reinforced by installing a counterfort at a certain interval on the back surface of the cantilever retaining wall. Wherein the subwall acts as a tension tie. It is economical to use it when the height exceeds 7.5m.

The front wall retaining wall is a retaining wall reinforced by installing a buttress at regular intervals on the cantilever retaining wall. At this time, since the subwall acts as a compression strut, it is more efficient and economical than the back wall. However, the back wall retaining wall is used more than the front wall retaining wall. The reason for this is that the front wall occupies the entire space, whereas the rear wall does not have such drawbacks.

In addition, an L-shaped retaining wall or an inverted L-shaped retaining wall is used.

The steel pipe 210 is embedded in the concrete of the retaining wall 100 and the concrete pipe 210 is embedded with the concrete when the retaining wall 100 is constructed. A protrusion 220 is integrally formed on the surface of the steel pipe 210 to increase adhesion with concrete. A thread 230 is formed on the inner side of the drainage side end of the steel pipe 210.

Here, the thread 230 is inserted with a rubber stopper 240 having a thread formed on the outer circumferential surface thereof.

That is, in the construction of the embedded part 200 of the retaining wall 100, a mold 900 is installed on a ground, a steel pipe 210 is installed at a predetermined position of the mold 900, After the rubber stopper 240 is inserted into one side of the mold 900 and the concrete is poured and cured in the mold 900, the mold 900 is demoulded, the rubber stopper 240 is removed, and the residual concrete is removed .

That is, a reinforcing bar (not shown) is placed in the mold 900 before the concrete for installing the retaining wall 100 is installed, a steel pipe 210 is installed around the reinforcing steel pipe, and when the concrete is poured into the steel pipe 210, A rubber stopper 240 is inserted into one side of the steel pipe 210 so that the rubber stopper 240 is not inserted.

At this time, the state in which the rubber stopper 240 is in close contact with the mold 900 should be maintained.

Thereafter, when concrete is put and cured, the mold 900 is demolded so that the pressed rubber stoppers 240 are raised again so that the embedded position of the steel pipe 210 can be easily found on the back surface of the retaining wall 100 do.

After the rubber stopper 240 is located, the residual concrete is removed, and the rubber stopper 240 is removed. Thus, the steel pipe 210 in the retaining wall 100 is completely buried.

The drainage unit 300 is formed of a fiber-reinforced plastic pipe 310, and a thread 320 is formed on both inner circumferential surfaces of the pipe pipe 310.

Here, the drain portion 300 is composed of at least one or more.

That is, the drainage unit 300 is an element constituting the free ends of drainage and ground reinforcement anchors.

It is fabricated using FRP (Fiber Reinforced Plastics) and has a tensile strength to some extent, so it functions well as a free reinforcement material for reinforced anchors.

Further, it is noted that the fiber-reinforced plastic is resistant to rust and other materials coming from the upper portion of the retaining wall 100 because of its corrosion resistance, and thus can be used for a long period of time.

The fiber-reinforced plastic has threads (320) formed on the outer circumferential surfaces at both ends for connection with the drain connection (700).

Particularly, the drainage unit 300 is manufactured in the form of a fiber-reinforced plastic pipe tube 310, and the hollow-type nonwoven fabric filter 330 is built in the fiber-reinforced plastic pipe pipe 310, Thereby blocking the inflow of the ground particles flowing along with the inflow water through the inflow port 310.

A buried portion connecting portion 600 connecting the buried portion 200 and the fiber reinforced plastic buried pipe 310 is provided and a thread is formed inside the buried portion connecting portion 600.

A rubber plug 240 is installed in the concrete embedded portion 200 of the drainage unit 300 before the concrete is installed when the retaining wall 100 is installed.

This is to increase the workability by allowing the installation position of the buried portion 200 to be recognized when the mold 900 is removed after the concrete is laid when the retaining wall 100 is installed.

A drain connection part 700 is connected between the drain parts 300.

The fixing unit 400 includes a bolt 470 having a predetermined diameter and a predetermined length and a grout stopper 480 is installed on the bolt 470. The grout stopper 480 is provided with an injection hole A grout injection hose 484 is installed in the injection hole 482 and a fixing force strengthening nut 490 is installed in the bolt 470.

That is, in the fusing unit 400, the metal bolts 470 are inserted into the perforation holes 520a after the rocks 520 are punched, the grout stoppers 480 are installed in the metal bolts 470, And the grout injection hose 484 is connected to the grout injection hole 482 to inject the grout. The grout injected surrounds the rock mass 520 around the bolt 470, 520) Grout penetrates all over the ground and develops a settlement force.

It is noted that the fixing force reinforcing nut 490 may be provided on the bolt 470 to increase the fixing force, if necessary.

A fusing unit connection part 800 is connected between the fiber plastic perforated pipe 310 of the drain part 300 and the fusing part 400 and receives a load through the fusing part connection part 800.

Meanwhile, in the combined drainage system for ground reinforcement for a retaining wall structure according to the present invention, the connecting part functions to connect the respective components (600, 700, 800).

In order to connect the steel pipe 210 embedded in the concrete of the retaining wall 100, the end of the buried portion connection portion 600 is connected to the male thread acid. In the case of the drain portion 200, Threaded.

Thus, the buried portion connecting portion 600 is similarly tightened or loosened when it is rotated in one direction. That is, the directions of the threads are opposite to each other.

Also, the drain connection part 700 used for connection between the drain part 300 and the drain part 300 is connected with only a female thread in consideration of structural stability, and the directions of the threads are the same.

The fusing unit connection unit 800 used between the drainage unit 300 and the fusing unit 400 is a rod-shaped rod because it does not perform a drainage function.

Hereinafter, the construction of the drainage system S serving as a ground reinforcement for a retaining wall structure according to the present invention will be described.

20A to 20F are process drawings showing a construction procedure of a third embodiment of a drainage system for a ground reinforcement for a retaining wall structure according to the present invention.

As shown in these drawings, the method of constructing a drainage system for reinforcing a ground for a retaining wall structure according to the present invention comprises the steps of: drilling a rock mass 520 to a predetermined diameter and length to form a perforation hole 520a; Installing a fusing unit (400) in the perforation hole (520a); Installing a retaining wall (100) by pouring and curing concrete in a state where a buried portion (200) is embedded in a portion spaced apart from the rock mass (520) by a predetermined distance; Installing a drainage part (300) between the buried part (200) and the fusing part (400); And backfilling the back surface of the retaining wall 100 with soil.

That is, a method of constructing a drainage system for reinforcing a ground for a retaining wall structure according to the present invention includes steps of forming a perforation hole 520a, installing a fusing unit 400, A step of constructing the retaining wall 100; The step of installing the drainage part 300 and the embedding step are sequentially performed.

In the step of forming the perforation holes 520a, the rocks 520 are horizontally excavated to a predetermined diameter and length to form perforation holes 520a.

The fixing unit 400 is installed with a bolt 470 inserted into the perforation hole 520a and a grout stopper 480 attached to the bolt 470 and the grout stopper 480 After the grout injection hole 484 is formed in the grout injection hole 482, the grout material is injected through the grout injection hose 484 to grout the inside of the hole 520a.

The retaining wall 100 is constructed such that the concrete is laid and cured in a state where the buried portion 200 is embedded in a portion spaced apart from the rock portion 520 by a predetermined distance.

The drainage part 300 is installed between the buried part 200 and the fusing part 400.

Subsequently, the embankment step backfills the back surface of the retaining wall 100 with the gravel.

The preferred embodiments described in the specification of the present invention are intended to be illustrative, not limiting, and the scope of the present invention is indicated by the appended claims, and all modifications that come within the meaning of the claims are included in the present invention. .

100: retaining wall 200: buried portion
210: steel pipe 220:
230: threads 240: rubber plug
241:
300: drainage part 310:
320: thread 330: hollow nonwoven filter
400: fixing unit 410: rod
420: tip portion 430: screw blade
440: threads 450: disk-shaped fixing plate
460: Fixing plate fixing nut 470: Numerical bolt
480: Grout stopper 482: Injection ball
484: Grout injection hose 490: Fixing force strengthening nut
500: slope ground 510: clay ground
520: rock mass 520a: perforation hole
600: buried portion connecting portion 700: drain portion connecting portion
800: Fusing part connection part 900: Formwork
S: Combined drainage system for ground reinforcement for retaining wall structures

Claims (26)

A retaining wall formed of any one of gravity type, cantilever type, rear wall type, and front wall type;
A buried portion made of a steel pipe having a predetermined diameter and a length and integrally formed with a protruding portion at a predetermined interval on the outer peripheral surface of the steel pipe and horizontally installed in the retaining wall;
A drain portion formed of a fiber reinforced plastic pipe having a thread formed on the outer circumferential surface at both ends and having a hollow nonwoven fabric filter built therein and connected to the end of the buried portion horizontally;
A fixing unit horizontally connected to an end of the drainage unit;
Wherein the fusing unit is composed of a slope ground to which the fusing unit is embedded,
A buried portion connecting portion is connected between the buried portion and the drain portion,
Wherein the drainage part is formed of at least one or more drainage part connecting parts between the drainage parts,
A fixing portion connecting portion is connected between the drain portion and the fixing portion,
Wherein the fixing unit is formed of a rod having a predetermined diameter and length, a distal end of the rod is formed with a conical tip, a screw blade is fixed to the distal end, a male screw acid is formed on the outer peripheral surface of the rear end of the rod,
A male screw thread is formed on the end portion of the buried portion, both end portions of the drain portion and an end face of the fixing portion, and a female screw thread corresponding to the inner surface of the both ends is formed in the buried portion connecting portion, the drain portion connecting portion, and the fusing portion connecting portion, And the fuselage mounts at both ends of the connection portion and the fusing portion connection portion are formed in different directions from each other at both ends so that when the buried portion connection portion and the drain portion connection portion or the fusing portion connection portion are rotated in one direction, both the buried portion connection portion and the drain portion connection portion or the fusing portion connection portion Wherein the joint between the buried portion and the drainage portion coupled with the drainage portion or between the drainage portion and the drainage portion or between the drainage portion and the fusing portion is simultaneously performed so that the buried portion or the drainage portion or the fusing portion is in a pulled state. system. A retaining wall formed of any one of gravity type, cantilever type, rear wall type, and front wall type;
A buried portion made of a steel pipe having a predetermined diameter and a length and integrally formed with a protruding portion at a predetermined interval on the outer peripheral surface of the steel pipe and horizontally installed in the retaining wall;
A drain portion formed of a fiber reinforced plastic pipe having a thread formed on the outer circumferential surface at both ends and having a hollow nonwoven fabric filter therein and connected to the end of the buried portion horizontally;
A fixing unit horizontally connected to an end of the drainage unit;
Wherein the fusing unit is composed of a clay ground in which the fusing unit is embedded,
A buried portion connecting portion is connected between the buried portion and the drain portion,
Wherein the drainage part is formed of at least one or more drainage part connecting parts between the drainage parts,
A fixing portion connecting portion is connected between the drain portion and the fixing portion,
Wherein the fixing unit is composed of a rod having a predetermined diameter and a length, a thread is formed at both ends of the rod, a disk-shaped fixing plate is provided at the tip of the rod, Respectively,
A male screw thread is formed on the end portion of the buried portion, both end portions of the drain portion and an end face of the fixing portion, and a female screw thread corresponding to the inner surface of the both ends is formed in the buried portion connecting portion, the drain portion connecting portion, and the fusing portion connecting portion, And the fuselage mounts at both ends of the connection portion and the fusing portion connection portion are formed in different directions from each other at both ends so that when the buried portion connection portion and the drain portion connection portion or the fusing portion connection portion are rotated in one direction, both the buried portion connection portion and the drain portion connection portion or the fusing portion connection portion Wherein the joint between the buried portion and the drainage portion coupled with the drainage portion or between the drainage portion and the drainage portion or between the drainage portion and the fusing portion is simultaneously performed so that the buried portion or the drainage portion or the fusing portion is in a pulled state. system. A retaining wall formed of any one of gravity type, cantilever type, rear wall type, and front wall type;
A buried portion made of a steel pipe having a predetermined diameter and a length and integrally formed with a protruding portion at a predetermined interval on the outer peripheral surface of the steel pipe and horizontally installed in the retaining wall;
A drain portion formed of a fiber reinforced plastic pipe having a thread formed on the outer circumferential surface at both ends and having a hollow nonwoven fabric filter built therein and connected to the end of the buried portion horizontally;
A fixing unit horizontally connected to an end of the drainage unit;
Wherein the fusing unit is formed of a rock bed to be buried,
A buried portion connecting portion is connected between the buried portion and the drain portion,
Wherein the drainage part is formed of at least one or more drainage part connecting parts between the drainage parts,
A fixing portion connecting portion is connected between the drain portion and the fixing portion,
Wherein the fixing unit comprises a bolt having a predetermined diameter and a length, a grout stopper is provided on the bolt, a grout stopper is formed with an injection hole, a grout injection hose is installed on the injection hole, A fixing force strengthening nut is installed,
A male screw thread is formed on the end portion of the buried portion, both end portions of the drain portion and an end face of the fixing portion, and a female screw thread corresponding to the inner surface of the both ends is formed in the buried portion connecting portion, the drain portion connecting portion, and the fusing portion connecting portion, And the fuselage mounts at both ends of the connection portion and the fusing portion connection portion are formed in different directions from each other at both ends so that when the buried portion connection portion and the drain portion connection portion or the fusing portion connection portion are rotated in one direction, both the buried portion connection portion and the drain portion connection portion or the fusing portion connection portion Wherein the joint between the buried portion and the drainage portion coupled with the drainage portion or between the drainage portion and the drainage portion or between the drainage portion and the fusing portion is simultaneously performed so that the buried portion or the drainage portion or the fusing portion is in a pulled state. system. delete delete delete delete delete delete delete delete delete delete Installing a fusing unit on a slope ground;
Wherein the slab is formed of a steel pipe having a predetermined diameter and a predetermined length at a portion spaced apart from the slope ground, and a protruding portion is integrally formed at a predetermined interval on the outer circumferential surface of the steel pipe, Placing a retaining wall in the shape of any one of gravity type, cantilever type, rear wall type, and front wall type by pouring and curing;
Providing a drainage portion formed of a fiber reinforced plastic pipe having a thread on an outer circumferential surface at both ends between the buried portion and the fixing portion and having a hollow nonwoven fabric filter;
And filling the back surface of the retaining wall with backfill with soil,
A buried portion connecting portion is connected between the buried portion and the drain portion,
Wherein the drainage part is formed of at least one or more drainage part connecting parts between the drainage parts,
A fixing portion connecting portion is connected between the drain portion and the fixing portion,
Wherein the fixing unit is composed of a rod having a predetermined diameter and a length, a tip of the rod is formed in a conical shape, a screw blade is fixed to the tip, a thread is formed on an outer peripheral surface of a rear end of the rod,
A male screw thread is formed on the end portion of the buried portion, both end portions of the drain portion and an end face of the fixing portion, and a female screw thread corresponding to the inner surface of the both ends is formed in the buried portion connecting portion, the drain portion connecting portion, and the fusing portion connecting portion, Since both ends of the female threads of the connecting portion and the fixing portion are formed in different directions,
In the step of installing the drain portion, when the buried portion connecting portion, the drain connecting portion, and the fixing portion connecting portion are rotated in one direction when connecting between the buried portion and the drain portion, between the drain portion and the drain portion, and between the drain portion and the fusing portion, Tightening the ends simultaneously,
Wherein a rubber stopper having protrusions formed on one surface thereof is coupled to an end portion of both ends of the embedded portion facing the slope ground in the step of constructing the retaining wall, And the end portions of both ends of the drainage portion and the ends of the buried portion in the step of installing the drainage portion are connected to each other so as to be connected to the slope surface of the concrete after the curing of the concrete poured for the construction of the retaining wall The rubber stopper which is identified while the protrusion is exposed on the surface of the cured concrete is removed to join the end of the drainage part to the end of the embedding part to prevent the concrete from flowing into the inside of the embedding part during the concrete installation for the retaining wall construction, And after the curing concrete poured for the retaining wall construction, Wherein the buried portion and the drain portion connecting process are significantly shortened by clearly exposing the buried portion in the process of connecting the drain portion to the ground. The concrete is placed and cured in a state of being built with a steel pipe having a predetermined diameter and a predetermined length on the ground and a buried portion integrally formed with the projecting portion integrally formed on the outer circumferential surface of the steel pipe is placed and gravity type, cantilever type, , And a front wall type;
Embedding the gravel up to the installation height on the back surface of the retaining wall;
Connecting a drainage section formed of a fiber reinforced plastic pipe having a thread on an outer circumferential surface at both ends and having a hollow nonwoven fabric filter installed horizontally to the embedding section and connecting the fixing section to the drainage section;
The drainage part and the fusing part to fill the gravel to the upper end of the retaining wall,
A buried portion connecting portion is connected between the buried portion and the drain portion,
Wherein the drainage part is formed of at least one or more drainage part connecting parts between the drainage parts,
A fixing portion connecting portion is connected between the drain portion and the fixing portion,
Wherein the fixing unit is composed of a rod having a predetermined diameter and a length, a thread is formed at both ends of the rod, a disk-shaped fixing plate is provided at the tip of the rod, Is screwed,
A male screw thread is formed on the end portion of the buried portion, both end portions of the drain portion and an end face of the fixing portion, and a female screw thread corresponding to the inner surface of the both ends is formed in the buried portion connecting portion, the drain portion connecting portion, and the fusing portion connecting portion, Since both ends of the female threads of the connecting portion and the fixing portion are formed in different directions,
In the step of installing the drain portion, when the buried portion connecting portion, the drain connecting portion, and the fixing portion connecting portion are rotated in one direction when connecting between the buried portion and the drain portion, between the drain portion and the drain portion, and between the drain portion and the fusing portion, Tightening the ends simultaneously,
Wherein a rubber stopper having protrusions formed on one surface thereof is coupled to an end portion of both ends of the embedded portion facing the slope ground in the step of constructing the retaining wall, And the end portions of both ends of the drainage portion and the ends of the buried portion in the step of installing the drainage portion are connected to each other so as to be connected to the slope surface of the concrete after the curing of the concrete poured for the construction of the retaining wall The rubber stopper that exposes and exposes the protrusion on the surface of the cured concrete is removed to join the end of the drainage section to the end of the embedding section to prevent the concrete from flowing into the inside of the embedding section during the concrete installation for retaining wall construction, And after the concrete curing placed for the retaining wall construction, Wherein the buried portion and the drain portion connecting process are significantly shortened by clearly exposing the buried portion in the process of connecting the drainage portion and the drainage portion. Excavating the rock mass with a predetermined diameter and length to form a perforation hole;
Installing a fixing unit in the perforation hole;
The concrete is placed and cured in a state of being embedded in a steel pipe having a predetermined diameter and a predetermined length at a portion spaced apart from the rock by a predetermined distance and having a buried portion integrally formed with an outer circumferential surface of the steel pipe at a predetermined interval, , A cantilever type, a rear wall type, and a front wall type;
Providing a drainage portion formed of a fiber reinforced plastic pipe having threads formed on outer peripheral surfaces at both ends between the buried portion and the fixing portion and having a hollow nonwoven fabric filter;
And backfilling the back surface of the retaining wall with gravel,
A buried portion connecting portion is connected between the buried portion and the drain portion,
Wherein the drainage part is formed of at least one or more drainage part connecting parts between the drainage parts,
A fixing portion connecting portion is connected between the drain portion and the fixing portion,
Wherein the fixing unit comprises a bolt having a predetermined diameter and a length, a grout stopper is provided on the bolt, a grout stopper is formed with an injection hole, a grout injection hose is installed on the injection hole, A fixing force strengthening nut is installed,
A male screw thread is formed on the end portion of the buried portion, both end portions of the drain portion and an end face of the fixing portion, and a female screw thread corresponding to the inner surface of the both ends is formed in the buried portion connecting portion, the drain portion connecting portion, and the fusing portion connecting portion, Since both ends of the female threads of the connecting portion and the fixing portion are formed in different directions,
In the step of installing the drain portion, when the buried portion connecting portion, the drain connecting portion, and the fixing portion connecting portion are rotated in one direction when connecting between the buried portion and the drain portion, between the drain portion and the drain portion, and between the drain portion and the fusing portion, Tightening the ends simultaneously,
Wherein a rubber stopper having protrusions formed on one surface thereof is coupled to an end portion of both ends of the embedded portion facing the slope ground in the step of constructing the retaining wall, And the end portions of both ends of the drainage portion and the ends of the buried portion in the step of installing the drainage portion are connected to each other so as to be connected to the slope surface of the concrete after the curing of the concrete poured for the construction of the retaining wall The rubber stopper which is identified while the protrusion is exposed on the surface of the cured concrete is removed to join the end of the drainage part to the end of the embedding part to prevent the concrete from flowing into the inside of the embedding part during the concrete installation for the retaining wall construction, And after the curing concrete poured for the retaining wall construction, Wherein the buried portion and the drain portion connecting process are significantly shortened by clearly exposing the buried portion in the process of connecting the drain portion to the ground. delete delete delete delete delete delete delete delete delete delete
KR1020150105154A 2015-07-24 2015-07-24 Anchors and their combined drainage system construction method for retaining wall KR101793648B1 (en)

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KR101501733B1 (en) * 2014-05-30 2015-03-18 대한이.이엔.씨(주) The eco-friendly precast l type retaining wall fixed with an anchor

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KR200270193Y1 (en) * 2001-12-26 2002-03-28 주식회사삼안건설기술공사 A drainpipe for river retaining wall
KR200352267Y1 (en) * 2004-02-12 2004-06-10 (주)피에스테크 Slope-reinforcing structure for soil nailing having function of drainage
JP2006016862A (en) * 2004-07-02 2006-01-19 Cti Engineering Co Ltd Cartridge type weep hole
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KR101501733B1 (en) * 2014-05-30 2015-03-18 대한이.이엔.씨(주) The eco-friendly precast l type retaining wall fixed with an anchor

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