KR101881577B1 - Retaining Wall Using Pile With Center Hole And Construction Method Thereof - Google Patents

Abstract

The present invention relates to a retaining wall construction method using a hollow pile reinforced with steel and concrete, including installing a guide frame after ground excavation or trimming; inserting hollow piles while or after forming perforation holes in the ground by means of the guide frame; inserting reinforcing materials into the piles; pouring concrete into the piles; excavating the front portions of the piles; installing connectors on the front portions of the piles; installing impermeable separation walls in the connectors; horizontally installing guide bars in the connectors; vertically installing a perforated pipe on the rear surface of the separation wall; filling at least one of sand, gravel, and rubble in the rear surface of the separation wall; installing cap concrete on top of the piles; placing foundation concrete under the piles; installing a support on the guide bar; and installing a finishing wall on the support. With the present invention, a retaining wall as high as 4 to 6 meters or more can be highly stably built. In addition, a retaining wall with a height of 4 to 6 meters or less can be economically built by means of reinforcing net or H beam insertion into a thin corrugated steel pipe or corrugated plastic pipe pile and high strength concrete placement and reinforcement inside.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retaining wall using a hollow pile reinforced with steel and concrete,

The present invention relates to a retaining wall utilizing a hollow pile reinforced with steel and concrete, and a construction method thereof.

Due to the nature of our country, which has a lot of mountainous terrain, there are many cases where slopes are cut in the process of constructing roads, railways, industrial complexes and residential land, and a retaining wall is installed at the bottom of cut slopes. Such a retaining wall is a kind of soil structure which can safely use the space on the front surface of the retaining wall while supporting the earth pressure on the rear surface, and is usually made of a base plate, a wall and a pillar member.

These retaining walls are generally constructed in the form of an L-shaped retaining wall, an inverted L-shaped retaining wall, an inverted T-shaped retaining wall, etc., and concrete is directly placed in a predetermined shape by using a form in the field, In the case of a construction in which the base plate and the wall are installed in a space formed by the foundation treader, It is common.

However, when there is a building or a transmission tower on the back side of the location where the retaining wall is to be installed, it is difficult to severly cut the backing soil, so that it is cut vertically as much as possible. In order to secure safety during cutting, There is a disadvantage to be installed. In this case, the cost of installing the truncated cone for preventing the collapse of the cut surface is increased, and the retaining wall must be constructed from the bottom only after the excavated surface is completely excavated.

In addition, in the case of the retaining wall provided on the front surface of the cut slope, a retaining wall having a beauty that can be harmonized with the surrounding environment is required. In the conventional construction method, since the wall of the retaining wall is constructed by using the cast concrete, There is a problem that it is difficult to construct a retaining wall equipped with

Further, in the case of concrete retaining wall, the ground groundwater seeps out through the concrete wall, and furthermore, when cracks occur in the concrete wall, the groundwater leaks and the wall surface becomes dirty.

Patent 1: Korean Patent No. 10-0529726

In order to solve the above problems, the present invention is to solve the above-mentioned problems, and to provide a pile of reinforced concrete structure or reinforced concrete structure reinforced with steel reinforced concrete structure by inserting reinforcing bars or H beams into a hollow steel pipe pile, , And a retaining wall using a hollow pile reinforced with concrete and a steel material capable of constructing the retaining wall having a high height of 4 to 6 m or more with excellent stability.

In the case of a retaining wall having a height of 4 to 6 m or less, reinforcement or H beam is inserted into a thin corrugated steel pipe or a corrugated plastic pipe, and a high strength concrete is laid in the inside thereof. It is intended to provide a retaining wall construction method using a hollow pile reinforced with concrete.

Also, by installing a pore pipe composed of a porous pipe wrapped with a fiber filter in the longitudinal direction of the pile between the paperboard and the partition wall, and filling sand, gravel, rubble and other drainage material between the paperboard and the partition wall, And a method of constructing a retaining wall using a hollow pile reinforced with concrete.

Also, it is possible to provide a method of constructing a retaining wall using a hollow pile reinforced with concrete and a steel pipe with a beautiful appearance, which can easily be installed with a closed wall by using a curved angle slidably coupled to the guide bar and the guide bar do.

Also, it is intended to provide a method of constructing a retaining wall using a steel pile having a pile and a stiffener to be inserted accurately in a vertical direction and a hollow pile reinforced with concrete by using a guide frame and a stiffener guide.

A method of constructing a retaining wall using a hollow pile reinforced with a steel material and concrete according to an exemplary embodiment of the present invention includes: installing a guide frame after excavating or arranging the ground; Inserting hollow piles while forming the fabric tools on the ground using the guide frame or after forming the fabric tools; Excavating a front portion of the piles; Installing connectors on the front portion of the piles; Installing impermeable separation walls in the connecting members; Installing guide bars horizontally in the link members; Installing a perforated pipe in a vertical direction on a rear surface of the partition wall; Filling at least one of sand, gravel, and rubble on the back surface of the partition wall; Providing a guide on the guide bar; And installing a finish wall on the pedestal.

Further, the method may further include inserting reinforcing materials into the piles after inserting the piles, and pouring concrete into the piles.

The method may further include the steps of installing cap concrete on the piles after the step of filling at least one of the sand, gravel and rubble, and placing the base concrete under the piles .

The guide frame may include a first frame made up of two rows of H beams arranged in a flat manner, first auxiliary frames installed and coupled over the upper flange of the first frame of the two rows, And second subframes installed and coupled over the lower flange of the second subframe.

The pile may be a corrugated steel pipe or a corrugated plastic pipe.

Further, the reinforcing member may be an H beam or a reinforcing bar.

The stiffener guide may further include four first members coupled to the pair of opposed first auxiliary frames, a second member coupled to each of the four first members, Direction, two third members which are respectively coupled to the pair of facing second members, and two fourth members which are coupled to each other, and the second member And the third member and the second member form a rectangular space in the center.

The connecting member may include a pair of first connecting members that are connected to the pile and a T-shaped second connecting member that is inserted and coupled between the pair of first connecting members. have.

In addition, the impermeable partition wall may be a synthetic resin.

Further, the guide bar may be characterized in that the sliding incision part is formed in the longitudinal direction.

The pore tube may include a porous tube having through holes and a fiber filter surrounding the outer side of the porous tube.

The support may include a sliding engaging portion inserted into the sliding incision portion of the guide bar so as to be slidably engaged with the sliding incision portion, and a hook-shaped angle portion coupled to the sliding engaging portion.

The retaining wall utilizing hollow piles reinforced with steel and concrete according to an example of the present invention can be constructed by the above-described method of wall construction using a hollow pile reinforced with steel and concrete.

Through the present invention, it is possible to insert a reinforcing bar or H beam into a hollow steel pipe pile and to insert a high-strength concrete to reinforce the pile with a reinforced concrete structure or a steel-concrete structure integrated with a hollow steel pipe. It is possible to have an effect that a high retaining wall can be installed with excellent stability.

In the case of retaining walls with a height of 4 to 6 m or less, reinforcement or H beam is inserted into a thin corrugated steel pipe or a corrugated plastic pipe, and reinforced with high-strength concrete, thereby making it possible to economically construct a retaining wall. Lt; / RTI >

In addition, by installing a pore pipe composed of a porous pipe wrapped with a fiber filter in the longitudinal direction of the pile between the paperboard and the partition wall, and filling sand, gravel, rubble, and the like between the paperboard and the partition wall, Lt; / RTI >

In addition, the use of the angled bar shaped slidably coupled to the guide bar and the guide bar enables the finished wall to be easily installed, and the aesthetic effect can be improved.

Further, by using the guide frame and the stiffener guide, the pile and the stiffener can be accurately inserted in the vertical direction.

1 is a perspective view showing a method of constructing a retaining wall using a hollow pile reinforced with a steel material and concrete according to an example of the present invention.
FIGS. 2A to 2H are views showing steps of a method of constructing a retaining wall using a hollow pile reinforced with a steel material and concrete according to an example of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In the drawings, like reference numerals are used to refer to like elements throughout the drawings, even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, May be "connected "," coupled "or" connected ".

Hereinafter, a method of constructing a retaining wall using a hollow pile reinforced with a steel material and concrete according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2. FIG.

Hereinafter, the front, front, and the like refer to the front side of the retaining wall, that is, the side where the facility is installed or used as a space after the excavation, and the back side refers to the back side of the retaining wall, i.e., the side not to be excavated.

A method of constructing a retaining wall using a hollow pile reinforced with a steel material and concrete according to an exemplary embodiment of the present invention includes: installing a guide frame (10) after excavating or arranging the ground; Inserting the hollow piles (20) after forming the cloth tools on the ground using the guide frame (10) or after forming the cloth tools; Excavating a front portion of the piles (20); (30) on the front side of the piles (20); Installing impermeable partition walls (40) in the connecting members (30); Installing guide bars (50) in the horizontal direction in the connecting members (30); Installing a perforated pipe (60) in a vertical direction on a rear surface of the partition wall (40); Filling at least one of sand, gravel, and rubble on the back surface of the partition wall (40); Installing a support (80) on the guide bar (50); And installing a finishing wall (90) on the base (80).

The method may further include inserting stiffeners 22 into the piles 20 after inserting the piles 20 and pouring concrete into the piles 20 .

A step of installing cap concrete 92 on top of the piles 20 after filling at least one of the sand, gravel and rubble, and a step of placing a base concrete 94 at a lower portion of the piles 20 The method comprising the steps of: The step of installing the cap concrete (92) and the step of placing the foundation concrete (94) may be carried out together or in a reversed order.

In the step of installing the guide frame 10, the ground is excavated or the ground is laid flat so that the guide frame 10 is installed. That is, it is a step of setting the position where the pile 20 is to be installed and installing the guide frame 10 after excavating or arranging the ground so that the guide frame 10 can be easily installed.

In the step of inserting the piles 20, the piles 20 are inserted while forming the cloth tools by using the guide frame 10 installed on the ground as a guide, or the piles 20 are inserted after forming the cloth tools first .

The guide frame 10 is designed to allow the cloth tools and the piles 20 to be installed at regular intervals and to be installed in the vertical direction at the same time.

The guide frame 10 includes a first frame 11 made of two rows of H beams spaced horizontally and spaced apart from each other and a second frame 11 spaced apart from the upper flange of the first frame 11 1 auxiliary frames 12 and second auxiliary frames 13 spaced apart and coupled across the lower flange of the first row 11 of the two rows. The first auxiliary frame 12 and the second auxiliary frame 13 can be easily joined to the first frame 11 by welding, bolts and nuts using flanges by using H-shaped steel having a small standard, The stiffener 22 can be easily coupled to the guide 15. The first auxiliary frames 12 and the second auxiliary frames 13 firmly connect the first frames 11 in two rows and form a hexahedral space together with the first frames 11 in two rows, And the pile 20 are formed and installed in the vertical direction. Therefore, the second sub-frame 13 is installed on the vertical side of the first sub-frame 12.

The pile 20 may be selected from a hollow steel pipe, a corrugated steel pipe, and a corrugated plastic pipe.

The steel pipe is used for a retaining wall having a height of 4 to 6 m or more by the combination of the reinforcing material 22 inserted into and filled with the reinforcing material and the high strength concrete so that the large earth pressure on the back surface can be well supported without additional reinforcement of the earth anchor, It is possible to form a retaining wall which is simple in structure, easy to construct, and is very economically stable.

Thin-walled corrugated steel pipes and corrugated plastic pipes can be used in a conventional retaining wall having a height of 4 to 6 m or less by combining a reinforcing material 22 inserted into and filled in the corrugated steel pipe and a high-strength concrete, thereby forming an economical retaining wall at a low cost . In this case, corrugated steel tubes and corrugated plastic tubes, which have a thin thickness, act as concrete molds. In addition, corrugated steel pipe or corrugated plastic pipe has the effect that the rough surface of the corrugation greatly reduces the back earth pressure.

The step of inserting the reinforcing materials 22 is a step of inserting a reinforcing material 22 formed of an H beam (steel material) or a reinforcing bar (axial reinforcing bar and helical reinforcing bar) into the hollow pile 20 inserted in the cloth tool . That is, the step of increasing the structural rigidity of the pile 20 by inserting the H beam or the reinforcing bar into the hollow portion of the hollow pile 20. Therefore, in this embodiment, the stiffness of the pile 20 is increased by the reinforcing member 22, so that additional reinforcement is not necessary, so that the structure is simple, the construction is easy, and the construction can be made economically.

The guide frame 10 may further include a stiffener guide 15. The stiffener guide 15 is coupled to a pair of first auxiliary frames 12 opposed to each other and includes a total of four first members 16, Four second members 17 connected to each of the four first members 16 and installed in the vertical direction, two third members 18 connecting the four second members 17 to each other, , And two fourth members (19) coupling the two third members (18), wherein the two third members (18) and the two fourth members (19) have a square shape at the center By forming the planar space, the reinforcing member 22 can be accurately inserted into the center of the pile 20. [

In the step of pouring concrete into the piles 20, the H beam or the reinforcing bar is inserted into the pile 20, the concrete injection pipe is inserted to the bottom of the hollow pile 20, It is a step to pour concrete. That is, by reinforcing the inside of the pile 20 with high-strength concrete, the stiffener 22 and the pile 20 can be integrated to increase the structural rigidity.

The step of excavating the front part of the piles 20 is a step of excavating the front part of the inserted hollow pile 20 with a backhoe or the like. It is preferable that the excavation has a front surface slightly ahead of the center line passing through the center of the piles 20. [ By thus drilling the front surface including a part of the pile 20, it is possible to install the porous pipe 60 and to fill the drainage material 70 such as gravel to drain the groundwater on the back surface of the retaining wall smoothly.

The step of installing the coupling members 30 is to install the coupling member 30 along the longitudinal direction of the pile 20 on the front portion of the excavated pile 20. [ That is, a step of installing a connecting member 30 on which a separating wall 40 and a guide bar 50, which will be described later, can be installed on the front portion of the pile 20.

The connecting member 30 includes a pair of first connecting members 32 which are in close contact with the outer circumferential surface of the pile 20 and which are in the shape of a letter and a pair of second connecting members 32 which are connected to the flange of the first connecting member 32, And a connecting member 34.

The first connecting member 32 is connected to the outer circumferential surface of the front portion of the pile 20 by welding or by means of a piece or the like and is formed of steel or plastic so that the web of the second connecting member 34 can be inserted And they may be joined to the pile 20 by welding, pieces, or the like. That is, the web of the second linking member 34 may be welded after being inserted between flanges bent outwardly of the first linking member 32, or may be joined with bolts and nuts.

The second connecting member 34 is made of T-shaped steel or plastic so that the web portion of the second connecting member 34 is sandwiched between the flanges of the pair of first connecting members 32 and joined with bolts and nuts, Can be combined.

The step of installing the partition walls 40 is a step of installing the impermeable partition wall 40 over the entire length of the pile 20 in the flange inner portion of the second connecting member 34. That is, the partition wall 40 is installed on the entire surface of the pile 20, thereby separating the front surface and the back surface of the pile 20, and preventing leakage of groundwater or the like to the front surface of the retaining wall.

The partition wall 40 may be formed of synthetic resin or the like. This synthetic resin can enhance the beauty of the retaining wall by preventing groundwater leaking from the ground on the back surface of the pile 20 from leaking out.

The step of installing the guide bars 50 is a step of installing the guide bars 50 in a direction orthogonal to the longitudinal direction of the pile 20, that is, in the horizontal direction, at the flange outer portion of the second linking member 34.

The guide bar 50 may be constructed such that a drainage material 70 such as sand, gravel, rubble and the like is laid between the partition walls 40 and the backside ground in a step to be described later, and then the drainage material 70 and the ground It is possible to prevent the partition walls 40 from projecting forward.

The guide bar 50 may have a sliding incision formed in the longitudinal direction. That is, the guide bar 50 has a cut-out portion formed on the entire surface of the C-shaped or quadrangular shape, and a cutter 80 described later is inserted into the incised portion of the front portion so that the guide bar 50 can be slidably coupled.

The step of installing the perforated pipe 60 is a step of installing the perforated pipe 60 in the vertical direction on the back surface of the partition wall 40. That is, it is a step to install the pipe 60 so as to be parallel to the longitudinal direction of the pile 20 at the rear excavation portion of the partition wall 40.

The pore tube 60 may include a pore tube 62 having a plurality of through holes and a fiber filter 64 surrounding the pore tube 62. Therefore, the porous pipe 62 is formed of steel or plastic and maintains rigidity, so that it is prevented from being pressed against the pressure of the drainage material 70 or the earth pressure to maintain the drainage passage. So that sand, soil and the like can be prevented from entering the perforated pipe 62.

It is preferable that at least one hole is provided between the pile 20 and the pile 20 on the back surface of the partition wall 40.

The step of filling at least one of sand, gravel, and rubble on the back surface of the partition wall 40 may be performed by using at least one of the sand, gravel, and rubble as the debris 70 outside the perforated pipe 60 provided on the back surface of the partition wall 40, Respectively.

The sand, gravel, and rubble are filled in the back surface of the partition wall 40 to serve as a drainage material 70, and groundwater or the like can be guided well to the pipe 60. Therefore, it is possible to smoothly drain only the fluid without accumulating foreign matter between the pile 20 and the partition wall 40, and to drain the groundwater smoothly through the pipe 60.

The step of installing the cap concrete (92) is a step of covering the upper part of the hollow pile (20) by casting the cap concrete (92). That is, by placing the cap concrete 92 connecting the piles 20 in the horizontal direction above the hollow pile 20, the piles 20 can be connected to each other and function well as a single retaining wall structure.

The cap concrete 92 is inserted into the piles 20 and the reinforcing members 22 protruded upward from the piles 20 are connected to each other by reinforcing bars to connect the piles 20 and the cap concrete 92 ). Accordingly, the reinforcing bars can be formed as a single retaining structure capable of acting as a single unit by bundling the piles 20 and the reinforcing members 22 and placing the cap concrete 92 thereon.

The step of pouring the foundation concrete 94 is a step of pouring the foundation concrete 94 under the pile 20. The foundation concrete 94 supports the drainage material 70 and the ground on the back surface of the retaining wall to prevent the outflow of the groundwater and the drainage pipe extending from the pipe 60 inside the pipe, can do. It is also preferable that the foundation concrete 94 is formed with a drainage port.

The step of installing the pedestal 80 is a step of installing the pedestal 80 slidably in the guide bar 50 described above. The support 80 includes a sliding engagement portion inserted into the sliding cutout portion of the guide bar 50 so as to be slidably engaged with the sliding cutout portion and a bent angle 82 coupled to the sliding engagement portion. And the like. For example, the sliding coupling portion may be composed of a bolt and a nut, and may be coupled to the angle 82 and to the incision groove of the guide bar 50.

The step of installing the finishing wall 90 may be performed by providing a fixing pin on the horizontal flange of the angle 82 of the support 80 and inserting a fixing pin into the groove formed on the upper and lower sides of the finishing wall 90 have. That is, by simply fitting the finishing wall 90 to the fixing pin, the finishing wall 90 can be efficiently installed.

In addition, the wall utilizing the hollow pile 20 reinforced with steel and concrete can be constructed by the wall construction method using the hollow pile 20 reinforced with the steel material and concrete. The concrete structures of the retaining wall refer to the above-mentioned construction methods.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all the constituent elements may be constituted or operated selectively in combination with one or more. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Guide frame
11: First frame
12: first auxiliary frame
13: Second auxiliary frame
15: Stiffener guide
16: first member
17: second member
18: third member
19: fourth member
20: Stake
22: Stiffener
30: connector
32: first connector
34: Second connector
40: separation wall
50: Guide Bar
60:
62: Porosity
64: Fiber filter
70: Drainage
80: Support
82: Angle
90: closed wall
92: cap concrete
94: Foundation concrete

Claims (13)

Installing a guide frame after excavating or arranging the ground;
Inserting hollow piles while forming the fabric tools on the ground using the guide frame or after forming the fabric tools;
Excavating a front portion of the piles;
Installing connectors on the front portion of the piles;
Installing impermeable separation walls in the connecting members;
Installing guide bars horizontally in the link members;
Installing a perforated pipe in a vertical direction on a rear surface of the partition wall;
Filling at least one of sand, gravel, and rubble on the back surface of the partition wall;
Providing a guide on the guide bar;
And installing a finishing wall on the base,
The guide frame
A first frame made up of two rows of H beams mounted equidistantly, first auxiliary frames installed over and coupled to the upper flange of the first frame of the two rows, and a second auxiliary frame installed across the lower flange of the first frame of the two rows And second auxiliary frames to be combined,
Further comprising stiffener guides mounted on the guide frame,
The stiffener guide
Four first members coupled to the pair of opposed first auxiliary frames, four second members coupled to each of the four first members and installed in the vertical direction, Two third members respectively coupled to each other and two fourth members coupled to each other between the two third members such that the two third members and the two fourth members form a square planar space at the center and,
The guide bar
A sliding incision is formed in the longitudinal direction,
The base includes:
A slidable engagement portion inserted into the sliding cutout portion of the guide bar to be slidably engaged with the slidable cutout portion of the guide bar; and an angled bracket coupled to the sliding engagement portion. A retaining wall construction method.
The method according to claim 1,
After the step of inserting the piles
Inserting stiffeners into the piles;
And pouring concrete into the piles. The method for constructing a retaining wall using a hollow pile reinforced with a steel material and concrete.
The method according to claim 1,
After filling at least one of the sand, gravel, rubble,
Installing cap concrete on top of the piles;
And pouring a base concrete to a lower portion of the piles. The method for constructing a retaining wall using a hollow pile reinforced with a steel material and concrete.
delete The method according to claim 1,
The pile
A corrugated steel pipe, and a corrugated plastic pipe. A method of constructing a retaining wall using a hollow pile reinforced with a steel and concrete.
The method of claim 2,
The stiffener
H beam or reinforcing steel, and a hollow pile reinforced with concrete.
delete The method according to claim 1,
The connecting member
A pair of first connecting members which are connected to the pile and have a T-shape, and a second connecting member which is inserted and coupled between the pair of first connecting members. A method of constructing a retaining wall using a pile.
The method according to claim 1,
Wherein the impermeable partition wall is made of synthetic resin, and a method of constructing a retaining wall using a hollow pile reinforced with concrete.
delete The method according to claim 1,
The pore tube,
A method of constructing a retaining wall using a hollow pile reinforced with a steel material and concrete, characterized by comprising a porous pipe having through holes formed therein and a fiber filter surrounding the outside of the porous pipe.
delete A retaining wall constructed by a method of constructing a wall using a hollow pile reinforced with steel and concrete according to any one of claims 1 to 3, 5, 6, 8, 9,

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