KR101459690B1 - Built-in precast panel retaining wall and Construction method thereof - Google Patents

Abstract

The present invention relates to a built-in precast panel retaining wall assembly, wherein the mounting of a retaining wall panel unit is convenient and the amount of concrete to be placed for the fixing of the retaining wall panel unit can be reduced while stably supporting the retaining wall panel unit; and a construction method thereof. To this end, the present invention provides a built-in precast panel retaining wall assembly, comprising: retaining wall panel units provided to neighbor with each other with an inclination; support block units each having a lower block having a panel receiving space part formed to be depressed so as to receive the lower area of the retaining wall panel unit; inclination blocks each extending from the lower block and placed on the outside surface of the slant ground and an upper block extending from the inclination block in the retaining wall panel unit direction and supporting the rear surface of the retaining wall panel unit; first backfill material each filled in an internal space defined by the lower block, the inclination block, the upper block and the rear surface of the retaining wall panel unit; second backfill material each filled between the inclination block and the rear surface of the retaining wall panel unit at the upper portion of the support block unit; and anchor unit each penetrating the retaining wall panel unit, the first backfill material and the inclination block and fixed to the slant ground The present invention also relates to a construction method thereof.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a built-in precast panel retaining wall assembly and a construction method thereof,

The present invention relates to a built-in precast panel retaining wall assembly and a method of constructing the same. More particularly, the present invention relates to a built-in precast panel retaining wall assembly, And more particularly, to a built-in precast panel retaining wall assembly capable of supporting a built-in pre-cast panel retaining wall assembly.

In general, the retaining wall is constructed on slopes, slopes, and rocks formed on residential areas and roadsides to prevent soil leaching and collapse.

Among the retaining walls, there are retaining walls using permanent anchors, rock bolts, or soilless nails.

For example, a retaining wall using a permanent anchor covers the entire slope of a slope with a concrete wall, and fixes the concrete wall to the slope using the permanent anchor. When the retaining wall is constructed according to the related art, the amount of concrete for installing the concrete wall is increased, and there is a problem that vegetation is not possible on the slope due to the concrete wall.

In addition, the retaining wall using the locking bolt is configured such that the panel is arranged upright around the inclined surface, the space between the panel and the inclined surface is filled with the gravel land, and the panel is fixed to the inclined surface using the locking bolt. According to the related art, when the retaining wall is constructed, vegetation is possible in the upper region of the gross land, but the supporting property against the panel is weakened due to the arrangement of the gravel land having a relatively weak supporting force between the panel and the slope There are disadvantages.

Korean Patent Registration No. 10-0375821 (Name of invention: block for retaining wall and method of construction thereof, public announcement date: March 17, 2003)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a built-in precast panel retaining wall assembly which is easy to install a retaining wall panel unit and which can stably support a retaining wall panel unit while reducing the amount of concrete pouring for securing the retaining wall panel unit, Method.

In order to solve the above-described problems, the present invention provides a retaining wall panel unit comprising: a retaining wall panel unit installed adjacent to a slope; A slope block extending from the lower block and being laid on an outer surface of the slope; and a slope block extending from the slope block to the retaining wall panel unit, A supporting block unit having an upper block extending in a direction of the retaining wall panel unit and supporting a rear surface of the retaining wall panel unit; A first backfill material filled in the inner space formed by the lower block, the inclined block, the upper block, and the rear surface of the retaining wall panel unit; A second backfill which is filled between a rear surface of the retaining wall panel unit and the inclined surface at an upper portion of the supporting block unit and an anchoring member which penetrates the retaining wall panel unit and the first backfill member and the inclined block, Unit built-in precast panel retaining wall assembly.

The support block unit may be made of concrete, the second backfill may be on-site soil for vegetation, and the first backfill may be one or more of cement mixed soil, solidified soil, and high solu- tion material.

The retaining wall panel unit includes a retaining wall panel and an anchor mounting portion protruding in a front direction of the retaining wall panel and fixed to the anchor unit, wherein the anchor mounting portion has a first through hole through which the anchor unit passes The retaining wall panel may have a second through hole communicating with the first through hole and passing through the anchor unit.

The anchor mounting portion may have a first inclined surface for allowing the anchor fixing portion of the anchor unit to be seated on a plane, and the first through hole may be formed on the first inclined surface.

The panel receiving space includes a first panel receiving space portion receiving the lower end portion of the retaining wall panel and a second panel receiving space portion receiving the lower end portion of the anchor mounting portion, And the second panel receiving space portion may be recessed along the thickness direction of the retaining wall panel unit.

The retaining wall assembly may further include a drain unit embedded in the second backing member to drain the water impregnated into the second backing member.

According to another aspect of the present invention, there is provided a method of constructing a concrete structure, the method comprising: placing a lower block in a concrete compartment around a slope, Installing the retaining wall panel unit by inserting a lower region of the retaining wall panel unit into the panel receiving space portion; Placing an inclined block extending from the lower block and covering an outer side surface of the slope into concrete; Filling a space between the inclined block and a rear surface of the retaining wall panel unit with a first backing material; Placing an upper block disposed on the first backfill to support a rear surface of the retaining wall panel unit and extending in the direction of the retaining wall panel unit from the inclined block into concrete; Installing and fixing an anchor unit disposed obliquely through the retaining wall panel unit, the first backfill material, and the inclined block; And filling a second backfill between the rear surface of the retaining wall panel unit and the slope at an upper portion of the upper block, wherein the first backfill comprises the lower block, the upper block, Wherein the inner wall is disposed in an inner space formed by the rear surface of the unit.

The method of constructing the built-in precast panel retaining wall assembly may further include the step of installing a drainage unit disposed inside the second backfill to drain water permeating the second backfill.

Wherein the built-in precast panel retaining wall assembly further comprises the step of providing a vegetation on top of the second backfill material, wherein the second backfill material is on-site soil material for vegetation, and the first backfill material comprises cement admixture soil, Lt; / RTI >

The effects of the built-in precast panel retaining wall assembly and the construction method according to the present invention will be described as follows.

First, since the lower area of the retaining wall panel unit is installed in a built-in type in the panel accommodating space of the lower block, it is not necessary to hold the retaining wall panel unit by using a separate device, thereby advantageously installing and constructing the retaining wall assembly have.

Second, the supporting block unit is made of a concrete material in a 'U' shape, and includes a lower block, an inclined block and an upper block constituting the supporting block unit, and an inner space formed by the rear surface of the retaining wall panel unit, And the hollow space is filled with the first backfill material, which is made of a material other than concrete, to reduce the amount of concrete pouring for securing the retaining wall panel unit.

Particularly, when the amount of concrete poured is reduced, the amount of hydration heat generated during the curing process of the concrete is reduced, and deformation of the retaining wall panel unit due to the hydration heat is reduced. Also, since the support block unit is formed in a 'C' shape, the thickness of the support block unit is reduced, so that there is an advantage that cracks due to the hydration heat are not generated in the support block unit.

Third, by increasing the section modulus of the supporting block unit by making the supporting block unit 'U' shape, and simultaneously fixing the retaining wall panel unit to the second backing member, the supporting block unit and the slope using the anchor unit There is an advantage that the retaining wall panel unit can be stably supported.

In particular, the supporting block unit may include a lower block for supporting the lower area of the retaining wall panel unit, an upper block for supporting the rear wall of the retaining wall panel unit, and an inclined block So that the retaining wall panel unit can be stably supported.

Fourth, since the on-site gravel occurring on the site is filled between the rear surface of the retaining wall panel unit and the slope at the upper part of the support block unit, the on-site gravel occurring on the site can be recycled, There is an advantage.

1 is a side view showing a state in which a built-in retaining wall assembly according to the present invention is installed.
2 is a front view of the retaining wall panel unit according to the present invention.
3 is a perspective view showing a lower block of a supporting block unit provided in the retaining wall assembly of FIG.
4 is a flowchart illustrating a method of constructing a retaining wall assembly according to the present invention.

Hereinafter, preferred embodiments of the present invention in which the above-mentioned problems to be solved can be specifically realized will be described with reference to the accompanying drawings. In describing the embodiments, the same names and the same symbols are used for the same configurations, and additional description therefor will be omitted below.

1 to 3, an embodiment of a built-in precast panel retaining wall assembly according to the present invention will be described as follows.

The retaining wall assembly includes a retaining wall panel unit 100, a supporting block unit 200, a first backing material 300, a second backing material 400, an anchor unit 500 and a drainage unit 600.

The retaining wall panel unit 100 is installed adjacent to the inclined sheet 1 to prevent the inclination of the inclined sheet 1 from flowing out or collapse of the inclined sheet 1. [

The retaining wall panel unit 100 includes a retaining wall panel 110 disposed at a predetermined distance from the slope 1 in the front direction and a front wall protruding in the front direction of the retaining wall panel 110, And anchor mounting portion 120 which is seated and fixed.

The retaining wall panel 110 includes a first panel 111 and a second panel 113 protruding from the first panel 111 to the front by a predetermined height. A second through hole (not shown) through which the anchor unit 500 passes is formed.

The anchor mounting part 120 protrudes in a front direction on a lower area of the retaining wall panel 110, that is, on a lower area of the second panel 113. [ The anchor mounting portion 120 is formed with a first inclined surface 121 for allowing the anchor fixing portion 540 of the anchor unit to be mounted on a plane and a second inclined surface 123 disposed to be symmetrical with respect to the first inclined surface have.

A first through hole 121a through which the anchor unit 500 passes is formed on the first inclined surface 121. The first through hole 121a communicates with the second through hole.

The anchor mounting portion 120 is protruded from a lower region of the retaining wall panel 110 so that the thickness of the anchor mounting portion 120 supporting the anchor fixing portion 540 is thickened, It is possible to stably support the anchor fixing part 540 at the time of pulling.

The support block unit 200 includes a lower block 210, an inclined block 220, and an upper block 230. Here, the support block unit 200 is installed using concrete, but the present invention is not limited thereto.

In the lower block 210, a panel receiving space in which a lower region of the retaining wall panel unit 100 is accommodated is depressed. The panel receiving space includes a first panel receiving space 211 in which the lower end of the retaining wall panel 110 is received and a second panel receiving space 213 in which the lower end of the anchor mounting part 120 is received. .

The first panel receiving space 211 is recessed along the width direction of the retaining wall panel unit 100 and the second panel receiving space 213 is formed along the thickness direction of the retaining wall panel unit 100. [ Is formed. The first panel housing space 211 and the second panel housing space 213 are formed to be orthogonal to each other and the first panel housing space 211 and the second panel housing space 213 May be formed to have the same depth.

As a result, the lower end of the retaining wall panel 110 is inserted into the first panel receiving space 211 and the lower end of the anchor mounting part 120 is received in the second panel receiving space 213, The lower area of the panel unit 100 is installed in the built-in type in the lower block 210, so that it is necessary to hold the retaining wall panel unit using a separate equipment in the process of installing the retaining wall panel unit 100 So that the installation and construction becomes convenient.

The inclined block 220 is extended from the lower block 210 and is laid on the outer surface of the slope 1. [ That is, the inclined block 220 is formed to be inclined along the surface of the sloped sheet 1.

The upper block 230 extends from the inclined block 220 in the direction of the retaining wall panel unit 100 to support the rear surface of the retaining wall panel unit 100. The upper block 230 is installed at a position higher than the first through-hole 121a of the anchor mounting portion and the second through-hole of the retaining wall panel with respect to the ground.

The anchor unit 500 may be installed on the anchor mounting part 120, the retaining wall panel 110, the first backfill material 300, and the inclined block 220 in the process of installing the anchor unit 500. [ So that it is finally stuck to the slope 1.

 Meanwhile, the lower block 210, the inclined block 220, and the upper block 230 are sequentially extended and formed in a 'C' shape.

An empty space is formed by the lower surface of the lower block 210, the inclined block 220 and the upper block 230 constituting the supporting block unit 200 and the rear surface of the retaining wall panel unit 100 .

The first backfill material 300 is filled in the inner space. As the first backfill material 300, a cement mixture soil may be used. Of course, the present invention is not limited to this, and the first backfill material may be at least one filler selected from the cement mixture soil, solidified soil and high solubility material.

As a result, the retaining block unit 200 is made of a concrete material and the inner space is filled with the first backing material 300, which is not concrete, to fix the retaining wall panel unit 100 The amount of concrete to be poured is reduced.

When the amount of concrete poured is reduced, the amount of hydration heat generated during the curing process of the concrete is reduced, and deformation of the retaining wall panel unit due to the hydration heat is reduced.

Also, since the supporting block unit 200 is formed in a 'C' shape, the thickness of the supporting block unit 200 is reduced, so that the supporting block unit 200 is not cracked due to the hydration heat.

In addition, if the supporting block unit 200 is formed in a 'C' shape, the sectional modulus of the supporting block unit 200 is increased, so that the retaining wall panel unit can be more stably supported. Particularly, it is possible to support the lower region of the retaining wall panel unit 100 through the lower block 210 and to support the rear face of the retaining wall panel unit 100 through the upper block 230, The retaining wall panel unit 100 can be stably supported by the supporting block unit 200 by having the inclined block 220 fixed at the same time as the retaining wall panel unit 100 by the supporting block unit 500. [

The second backfill material 400 is filled between the rear surface of the retaining wall panel unit 100 and the slope 1 at the upper part of the supporting block unit 200. As the second backfill material 400, on-site soil material generated in the field can be used.

By using the second backfill material 400 as an on-site soil material, it is possible to recycle the on-site soil material generated in the field, and vegetation is possible in the upper area of the on-site soil material.

The anchor unit 500 is fixed to the slope 1 while passing through the retaining wall panel unit 100, the first backfill material 300 and the inclined block 220.

Specifically, the anchor unit 500 includes an anchor head 510 fixed to the slope 1, the retaining wall panel unit 100, the first backfill material 300, and the inclined block 220 A pressure plate 530 which is disposed on the first inclined surface 121 of the anchor mounting part and through which the one end of the anchor body 520 penetrates and an anchor body 530 which is disposed on the upper surface of the anchor body 530, And an anchor fixing portion 540 for fixing the body.

As a result, by simultaneously fixing the retaining wall panel unit 100 to the second backing material 400, the support block unit 200, and the slope 1 using the anchor unit 500, 100 can be stably supported.

The drainage unit 600 is embedded in the second backfill material 400 and drains water penetrating the second backfill material 400 to the outside of the retaining wall assembly 400. The drain unit 600 may include a plurality of water collecting holes.

The present invention is not limited to the above-described embodiment, and a drainage hole for drainage is separately formed in the retaining wall panel unit 100, and a position of the drainage hole is formed at a position corresponding to a lower area of the second backfill material 400 .

The construction method of the built-in retaining wall assembly according to the present invention will be described with reference to FIGS. 1 and 4. FIG.

First, the lower block 210 in which the panel receiving space portion is embedded in the compaction area around the slope 1 is poured into concrete (S10).

Next, the retaining wall panel unit 100 is installed by inserting a lower region of the retaining wall panel unit 100 into the panel accommodating space portion (S20).

Next, the inclined block 220 extending from the lower block 210 and covering the outer surface of the sloped sheet 1 is poured as concrete (S30).

In order to form an anchor hole for installing the anchor unit 500 before the inclined block 220 is laid, the first through hole 121a of the anchor mounting part 120 is inserted into the first through hole 121a, (121a) to the outer surface of the slope (1).

Next, a space between the inclined block 220 and the rear surface of the retaining wall panel unit 100 is filled with the first backing material 300 (S40).

The rear wall panel unit 100 is installed on the upper part of the first backfill 300 to support the rear wall of the retaining wall panel unit 100, The block 230 is poured into concrete (S50).

As a result, the first backfill 300 is disposed in the inner space defined by the lower surface of the lower block 210, the inclined block 220, the upper block 230, and the rear surface of the retaining wall panel unit 100 do.

Next, an anchor hole is formed in the slope through the pipe.

Next, the anchor unit 500, which is slopingly fixed while passing through the retaining wall panel unit 100, the first backfill material 300, and the inclined block 220, is installed (S60).

Next, the anchor unit 500 is fixed to the anchor mounting portion 120.

Next, a second backfill material is filled between the rear surface of the retaining wall panel unit 100 and the slope 1 at an upper portion of the upper block 230 (S70). As the second backfill material 400, on-site soil material for vegetation may be used.

Before the second backfill material (400) is filled, a drainage unit (600) to be disposed inside the second backfill material is installed to drain the water permeating the second backfill material (400). Of course, the step of installing the drainage unit 600 may be performed after the second backfill material 400 is filled.

Finally, vegetation is installed in the upper area of the second backfill material 400.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention as claimed in the claims. And such variations are within the scope of the present invention.

100; Retaining wall panel unit 110: Retaining wall panel
120: anchor mounting portion 121: first inclined surface
121a: First through hole 200: Supporting block unit
210: lower block 211: first panel receiving space part
213: second panel receiving space 220: inclined block
230: upper block 300: first backfill
400: Second backfill material 500: Anchor unit
600: drainage unit

Claims (9)

A retaining wall panel unit installed adjacent to the slope;
A slope block extending from the lower block and being laid on an outer surface of the slope; and a slope block extending from the slope block to the retaining wall panel unit, A supporting block unit having an upper block extending in a direction of the retaining wall panel unit and supporting a rear surface of the retaining wall panel unit;
A first backfill material filled in the inner space formed by the lower block, the inclined block, the upper block, and the rear surface of the retaining wall panel unit;
A second backfill material which is filled between a rear surface of the retaining wall panel unit and the inclined surface at an upper portion of the supporting block unit,
And an anchor unit passing through the retaining wall panel unit, the first backfill material, and the inclined block and being fixed to the slope. The method according to claim 1,
Wherein the support block unit is a concrete material, the second backfill material is on-site soil material for vegetation, and the first backfill material is one or more fillers of cement mixture soil, solidified soil, and high-solu- tion material. The method according to claim 1,
Wherein the retaining wall panel unit includes a retaining wall panel and an anchor mounting portion protruding in a front direction of the retaining wall panel and fixed to the anchor unit,
Wherein the anchor unit includes a first through-hole through which the anchor unit passes, and the retaining wall panel has a second through-hole communicating with the first through-hole, the second through-hole passing through the anchor unit. Cast panel retaining wall assembly. The method of claim 3,
Wherein the anchor mounting portion is formed with a first inclined surface for allowing the anchor fixing portion of the anchor unit to be mounted on a plane, and the first through hole is formed on the first inclined surface. . The method of claim 3,
The panel receiving space includes a first panel receiving space portion receiving the lower end portion of the retaining wall panel and a second panel receiving space portion receiving the lower end portion of the anchor mounting portion, And the second panel receiving space portion is recessed along the thickness direction of the retaining wall panel unit. 6. The method according to any one of claims 1 to 5,
Further comprising: a drainage unit embedded in the second backfill material to drain the water impregnated into the second backfill material. Placing a lower block having a recessed portion of the panel accommodation space in a compaction area around a slope as concrete;
Installing the retaining wall panel unit by inserting a lower region of the retaining wall panel unit into the panel receiving space portion;
Placing an inclined block extending from the lower block and covering an outer side surface of the slope into concrete;
Filling a space between the inclined block and a rear surface of the retaining wall panel unit with a first backing material;
Placing an upper block disposed on the first backfill to support a rear surface of the retaining wall panel unit and extending in the direction of the retaining wall panel unit from the inclined block into concrete;
Installing and fixing an anchor unit disposed obliquely through the retaining wall panel unit, the first backfill material, and the inclined block; And,
And filling a second backfill between the back surface of the retaining wall panel unit and the slope at an upper portion of the upper block,
Wherein the first backfill material is disposed in an inner space defined by the lower block, the inclined block, the upper block, and the rear surface of the retaining wall panel unit. 8. The method of claim 7,
Further comprising installing a drain unit disposed within the second backfill to drain water permeating the second backfill. ≪ RTI ID = 0.0 > 31. < / RTI > 9. The method according to claim 7 or 8,
Wherein the second backfill material is one of at least one of a cement mixture soil, a solidified soil, and a solidified material, wherein the second backfill material is an on-site soil material for vegetation, A method of constructing a built-in precast panel retaining wall assembly.

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