KR101556545B1 - Method for constructing using a double wall Precast Concrete - Google Patents

Method for constructing using a double wall Precast Concrete Download PDF

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Publication number
KR101556545B1
KR101556545B1 KR1020150073862A KR20150073862A KR101556545B1 KR 101556545 B1 KR101556545 B1 KR 101556545B1 KR 1020150073862 A KR1020150073862 A KR 1020150073862A KR 20150073862 A KR20150073862 A KR 20150073862A KR 101556545 B1 KR101556545 B1 KR 101556545B1
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South Korea
Prior art keywords
double wall
month
wall
concrete
slab
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KR1020150073862A
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Korean (ko)
Inventor
최명식
김익배
이진섭
강태성
김희석
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삼표피앤씨 주식회사
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Priority to KR1020150073862A priority Critical patent/KR101556545B1/en
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Publication of KR101556545B1 publication Critical patent/KR101556545B1/en

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/562Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with fillings between the load-bearing elongated members

Abstract

The present invention relates to a method for constructing a structure using double wall precast concrete (PC), The method for constructing a structure using double wall PC comprises: a step of coupling a first wall PC and a second wall PC in such a manner that a separation space is formed between the PC first wall and the PC second wall to manufacture a double wall PC; and a step of locating a reinforcing member, which is installed to be exposed to the top of the foundation, in the separation space of the double wall PC to install the double wall PC on the foundation. According to the present invention, the structure can be rapidly and stably constructed.

Description

[0001] The present invention relates to a method for constructing a double wall concrete,

The present invention relates to a method of constructing a structure using a double wall PC, and more particularly, to a method of constructing a structure using a double wall PC that can quickly and stably construct a structure.

Generally, in order to form a ceiling, a bottom surface, a wall surface, and a column in the construction of an apartment, a mall, a house, a building, and the like, a reinforcing bar is used to form a mold, The reinforced concrete frame is formed by pouring concrete inside.

 However, in the above-described construction method, all the processes such as the step of assembling the reinforcing bars to each other by the binding line, the step of installing and removing the formwork, and the supporting and supporting of the supporting slabs are performed at the construction site, And work time. In addition, there is a problem that the construction period is prolonged due to the work schedule because the concrete held until the cured concrete is cured with sufficient strength. There is also a problem that there is a lot of troubles in the disassembly of slab, support and wall formwork, and there is a risk of safety accident.

Particularly, in the process of installing and removing the formwork, a large number of form panels are broken and must be repaired or dismantled. Therefore, not only is the material loss large, but also it takes a lot of time such as the laying process, A carpenter who installs and dismantles a steelwork, a formwork, and a skilled artisan.

Korean Patent Publication No. 10-2001-0088278

The object of the present invention is to provide a method of constructing a structure using a double wall PC capable of rapidly and stably constructing a structure.

The present invention relates to a method of constructing a structure using a double cast concrete (Precast Concrete), in which a first space unit is formed by combining a first space unit and a second space unit to form a space between the first space and the second space, Making a wall paper; And installing a double wall PC on the foundation by positioning a reinforcing member installed to be exposed at an upper portion of the foundation in the spaced space of the double wall PC.

The method of constructing a structure using double wall PC according to the present invention has the following effects.

First, since the insert grooves are formed in the double wall PC, when the floor slab is manufactured on the foundation, the floor slab can be more stably fixed by forming the shear keys inserted in the insertion grooves together. Therefore, a separate structure or process for fixing the floor slab is not necessary, and the effect of shortening the construction time can be expected.

Second, by forming a through slit or a through hole between the insertion grooves of the double wall PC, the reinforcing bar provided when the floor slab is manufactured at the construction site passes through the through slit or the through hole to the inside of the double wall slit Therefore, when concrete is placed in the spacing space of the double wall PC, the fixing force of the double wall PC and the floor slab can be improved by the bonding force with the reinforcing steel.

1 is a block diagram illustrating a method of constructing a structure using a double wall PC according to an embodiment of the present invention.
2 to 5 are cross-sectional views illustrating a manufacturing process of the double wall PC according to FIG.
FIG. 6 is an exploded perspective view showing a combined state of a floor slab and a double wall PC installed on a foundation.
FIGS. 7 to 9 illustrate a process of laying a floor slab coupled with a double wall PC on a foundation.
10 is a block diagram illustrating a method of constructing a structure using a double wall PC according to another embodiment of the present invention.
11 is a cross-sectional view illustrating a state in which a double wall PC and a base are coupled according to FIG.
12 is a cross-sectional view illustrating a method of constructing a structure using a double wall PC according to another embodiment of the present invention.
13 is a cross-sectional view illustrating a method of constructing a structure using a double wall PC according to another embodiment of the present invention.
14 to 16 are cross-sectional views illustrating a method of constructing a structure using a double wall PC according to another embodiment of the present invention.
FIG. 17 is a side view showing a state in which a double wall PC and a ceiling slab are coupled, and FIG. 18 is a sectional view of AA 'in FIG.
19 is a side view showing a state according to another embodiment in which a double wall PC and a ceiling slab are combined.

1 to 9 show a method of constructing a structure using a double wall PC according to an embodiment of the present invention.

Referring to FIGS. 1 to 9, a method for constructing a structure using a double wall PC according to an embodiment of the present invention includes a second wall PC 230 having insertion grooves 235 formed along the horizontal direction, The double wall PC 200 is manufactured by combining the first wall PC 210 and the first wall PC 210 in step S105 so that the reinforcing member 11 exposed upward from the base 10 is inserted into the double wall PC 200, The step of installing the double wall paper 200 is performed by placing the double wall paper 200 in the spacing space of the base 10 and the shear keys 31 inserted into the insertion grooves 235 along one side surface thereof (Step S115). The bottom slab 30 is formed by placing a floor slab 30 spaced apart from the floor slab 30 in a step S115.

The process of manufacturing the double wall PC 200 will be described with reference to FIGS. 2 to 5 in step S105. First, the first month PC 210 is installed with a first wire mesh 212 inside a mold (not shown), and pours concrete. A reinforcing member provided between the lower wire mesh 213 and the upper wire mesh 217 spaced apart from each other and spaced apart from each other by the lattice bars 215 is inserted into the poured concrete.

At this time, any one of the lower wire mesh 213 and the upper wire mesh 217 is brought into contact with the first wire mesh 212 embedded in the concrete. In this embodiment, the lower wire mesh 213 And contacts the first wire mesh 212. When the concrete is cured and the reinforcement member is fixed while the lower wire mesh 213 is in contact with the first wire mesh 212, the manufacture of the first month PC 210 is completed.

After the first month PC 210 is manufactured, the second month PC 230 is manufactured. A second wire mesh 233 is installed inside a mold (not shown) having protrusions (not shown) corresponding to the insertion grooves 235, The concrete is poured into the inside of the pipe. At this time, the concrete 231 placed in the formwork (not shown) is cured so as not to fully cure but to be in a loose state, and the second wall paper 230 is manufactured.

One of the first month PC 210 and the second month PC 230 may be longer or shorter than the length of the other one of the height directions. Although not shown in the drawings, the length of the second month PC 230 in the height direction is shorter than the length of the first month PC 210 in the present embodiment. However, the present invention is not limited to this, and may be formed in the opposite manner.

After the second month PC 230 is manufactured, the double wall PC 200 is manufactured using the first month PC 210 and the second month PC 230. Step S115) The step of manufacturing the double wall PC 200 will be described in more detail. The first wall PC 210 manufactured in the first step is inverted and placed on the second wall PC 230 manufactured. That is, the first month PC 210 is inverted and disposed on the second month PC 230 so that the upper wire mesh 217 of the first month PC 210 is downward.

The first month PC 210 disposed above the second month PC 230 moves downward. At this time, since the concrete 231 of the second month PC 230 is in a loose state, a part of the upper wire mesh 217 and the lattice bar 215 of the first month PC 210 are separated from the second month PC When the upper wire mesh 217 of the first month PC 210 is in contact with the second wire mesh 233 of the second month PC 230, The movement of the January PC 210 is stopped and the concrete 231 of the second month PC 230 is cured. The concrete wall 231 of the second wall PC 230 is cured and the double wall PC 200 having a space formed between the first wall PC 210 and the second wall PC 230 is manufactured.

The double wall PC 200 is moved to a construction site and concrete is poured into the spaced space between the first wall PC 210 and the second wall PC 230 to form a wall (not shown) of the structure. At this time, the wall (not shown) improves the bonding force with the concrete laid in the spacing space by the lattice bars 215 between the first month PC 210 and the second month PC 230, Is reinforced.

In the above description, the insertion grooves 235 are formed along the horizontal direction only on the side surface of the second month PC 230, but the present invention is not limited thereto. Insert grooves (not shown) may be formed along the horizontal direction on the side surface of the first month PC 210. Therefore, only one of the second month PC 230 and the first month PC 210 may have insertion grooves, or both the second month PC 230 and the first month PC 210 may have insertion grooves, May be formed.

After step S105 in which the double wall PC 200 is manufactured as described above, the step S110 is performed. The base 10 may be illustratively a RC (Reinforced Concrete) column or an RC slab. When the double wall PC 200 is installed on the base 10, the insertion grooves 235 of the second wall 230 are positioned on the lower side adjacent to the base 10, (200) is set up in the height direction.

As shown in FIG. 6, the base 10 is formed with a step 10a on the upper surface on which the double wall PC 200 is disposed. When the double wall PC 200 is placed on the foundation 10 on which the step 10a is not formed and the floor slab is produced by placing the double wall PC 200 on the floor, The contact area is small and the bonding force is weak. However, as described above, when the step 10a is formed on the base 10 and the double wall PC 200 is disposed to make the floor slab, the base 10 and the double The contact area between the base plate 10 and the double-wall paper 200 increases so that the bonding force between the base plate 10 and the double wall paper 200 increases.

The reinforcing member 11 is installed on the base 10 so that one side of the reinforcing member 11 is inserted into the base 10 and the other side of the reinforcing member 11 is exposed from the base 10. The reinforcing member 11 is located in the spaced space of the double wall PC 200. [ When the concrete is poured into the spaced space by the reinforcing member 11, the fixing force between the base 10 and the double wall PC 200 can be further improved due to the coupling force between the concrete and the reinforcing member 11 .

As described above, after step S110, the process proceeds to step S115. When the double wall PC 200 is installed on the foundation 10, the floor slab 30 coupled with the double wall PC 200 is installed on the floor. The process of laying the floor slabs 340 in place will be described in more detail with reference to FIGS. 7 to 9. FIG. First, a mold 1 corresponding to the width direction of the double wall PC 200 and corresponding to the bottom slab 30 to be coupled with the double wall PC 200 is installed on the foundation 10 do.

When the formwork 1 is installed, the slab reinforcement 33 for reinforcing the rigidity of the bottom slab 30 is installed. The slab reinforcements 33 are spaced apart from each other along the width direction of the formwork (not shown) and are arranged in plural. At this time, each of the slab reinforcing bars 33 is arranged to be inserted into the spacing space of the double wall PC 200. A through slit 237 is formed in the double wall PC 200 so that one side of each of the slab reinforcing bars 33 can be inserted into the spacing space of the double wall PC 200.

The penetration slit 237 is formed in the second month glass 230 and the through slits 237 are formed between the insertion grooves 235 formed in the second month glass 230 . Each of the slab reinforcing bars 33 penetrates the through slits 237 and enters the spacing space.

When the slab reinforcing bars 33 are laid, the concrete is laid and cured in the dies 1, and then the dies 1 are removed to complete the fabrication of the floor slabs 30. The concrete inserted in the formwork (not shown) is filled in the respective insertion slots 235 of the second month PC 230 and formed as a shear key 31 of the bottom slab 237. The bottom slab 30 and the double wall PC 200 are inserted into the insertion groove 235 of the double wall PC 200 so that the bottom slab 30 and the double wall PC 200 are separated from each other. The effect of stable coupling can be expected.

Meanwhile, a part of the concrete to be poured into the double wall PC 200 flows into the spaced space of the double wall PC 200 through the through slits 237. The concrete introduced into the spacing space is formed of the bottom slab 30 and is also filled in the spaced spaces of the slab reinforcement 33 and the double wall PC 200, 30 and the double wall paper 200 can be fastened together with a strong fixing force.

Although the penetration slit 237 is formed in the second month glass 230 in this embodiment, the present invention is not limited thereto. (Not shown) may be formed in place of the penetrating slits 237 in another embodiment. When the slab reinforcing bars 33 are laid, one side of each of the slab reinforcing bars 33 may be provided with through holes And may be introduced into the spaced space of the double wall PC 200.

6 to 9, the double wall PC 200 is installed on the base 10, and then the floor slab 30 is manufactured by placing the double wall PC 200 on the floor 10 as an example However, the present invention is not limited thereto, and a PC slab (not shown) may be combined with the double wall PC 200, and concrete may be installed in the site to separate the double wall PC 200 and the PC slab It may be fixed.

10 and 11 show a method of constructing a structure using a double wall PC according to another embodiment of the present invention. In a method of constructing a structure using double wall PC according to another embodiment of the present invention, steps S105 and S110 of the method of constructing a structure using double wall PC according to the above embodiment are performed in the same manner. Therefore, a description thereof will be omitted.

11, when the floor slab 30 is not fabricated on the foundation 10 after the step S110, the double wall PC 200 is installed on the foundation 10, The double wall PC 200 and the base 10 are coupled and fixed together through the fixing unit 220 as shown in FIG.

The fixing unit 220 includes a bracket 221, a fastening bolt 222, a tie rod 223, and a fixing nut 225. 11, one of the brackets 221 is in face-to-face contact with the base 10 and the other face is in face-to-face contact with the second wall PC 230, do. One side of the other bracket 221 is in surface contact with the base 10 and the other side is in surface contact with the first month PC 210.

The fastening bolt 222 is fastened to one side of the bracket 221 which is in contact with the base 10 and the base 10 at the same time so as to fix the base 10 and the bracket 221 at the same time .

The tie rods 223 are provided through the brackets 221 and the first and second month PCs 210 and 230. One of the fixing nuts 225 is fastened to one side of the tie rod 233 and the other is fastened to the other side of the tie rod 233 and fixed. The other surface of the bracket 221, which is in surface contact with the base 10, may be fixed by a fastening member (not shown), welding, or the like.

Figures 12 and 13 illustrate an engaging and fixed state of the double wall PC 200 disposed on the base 10 according to yet another embodiment. 12, when the double wall PC 200 is disposed at a predetermined height from the foundation 10 and grout is injected into the spacing space of the double wall PC 200, The base 10 and the double wall PC 200 are coupled and fixed while filling the space between the wall PC 200 and the space between the base 10 and the double wall PC 200.

The grooved grooves 210a and 230a are spaced apart from each other along the width direction of the first wall 210 and the second wall 230 of the double wall PC 200, . Because the double wall PC 200 has a long width, it is not easy to fill the grout by injecting the grout at a certain position. Accordingly, a plurality of the through holes 210a and 230a may be formed, and the grout may be injected at various positions. The clogging member 40 may be disposed outside the double wall PC 200 before the grout is injected into the double wall PC 200 so that the grout may contact the first wall PC 210 of the double wall PC 200 And the outside of the second moon phase 230. [0050] In addition, the grout can be meticulously injected so as to prevent voids between the double wall PC 200 and the foundation 10. When the grout is cured, the clogging member 40 is removed.

13, the pad mortar 20 is applied on the foundation 10 at a position where the double wall PC 200 is to be disposed, and the double wall PC 200 So that the base 10 and the double wall PC 200 can be coupled and fixed by the pad mortar 20.

14 to 16, another embodiment of installing the double wall PC 200 on the base 10 is shown. First, as shown in FIG. 14, a groove 13 for installing the double wall PC 200 is formed on the base 10. The grooves 13 are formed by placing the slabs 13a at positions corresponding to the grooves 13 when constructing the foundation 10 by pouring concrete into the slabs 13a, If the concrete is cured in this state, the groove 13 is formed. When the concrete is cured, the slab 13a is removed. The grooves 13 are formed such that the upper reinforcing bars 2 constituting the base 10 are not exposed and the reinforcing members 11 are exposed to the outside of the grooves 13.

The reinforcing member 11 is disposed in the groove 13 while being positioned inside the spacing space of the double wall PC 200. In this case, a height correcting member 51 is provided in the groove 13 to adjust the height of the double wall PC 200 disposed in the groove 13. The height of the double wall PC 200 can be adjusted by using the height correcting member 51 when the bottom surface of the groove 13 formed in the base 10 is not uniformly formed. The double wall PC 200 is fixed by sandwiching a fixing member 53 between the groove 3 and the outer surface of the double wall PC 200 so that the double wall PC 200 is not tilted in any one direction. . The fixing member 53 is illustratively a wedge.

When the double wall PC 200 is fixed by the fixing member 53, the grout 10 'is injected through the through holes 210a and 230a formed in the double wall PC 200, 200 can be completed by filling the grooves 13 with the grout 10 'and curing the grout 10'.

17 and 18, a ceiling slab 30 'may be installed on the upper side of the double wall PC 200. Ribs 31 'protruding downward from the ceiling slab 30' are spaced apart from each other along the width direction.

The ceiling slab 30 'is installed at the upper end of either the first month PC 210 or the second month PC 230 of the double wall PC 200. In the present embodiment, the ceiling slab 30 'is installed on the upper end of the second month PC 230'. Therefore, on the upper side of the second month PC 'of the double wall PC 200 according to the present embodiment, the ribs 31' are formed and the coupling grooves 236 are formed along the width direction. The thickness of the second month PC '230' is higher than the thickness of the second month PC '. Thus, by forming the upper side of the second moon phase plate 230 'thick, the ceiling slab 30' can be arranged stably.

If the upper part of the second moon phase 230 'is not thickened as shown in FIG. 17, the upper mover 230' may be formed by the overhead slab 30 'disposed above the second moon phase 230' A support (not shown) is required to support the second month PC 230 'in diagonal and vertical directions to prevent the second month PC 230' from collapsing. However, as shown in FIG. 17, if the upper part of the second month PC 'is thickened, the ceiling slab 30' is stably placed and the force supporting the ceiling slab 30 ' The second month PC 230 'can be prevented from collapsing.

Another embodiment of installing the ceiling slab 30 'on the upper side of the double wall PC 200 will be described with reference to FIG. First, a window girder 60 is disposed above one of the first and second month PCs 230 and 230 of the double wall PC 200. In the present embodiment, the frame beam 60 is disposed on the second month PC 230. The concrete is first laid in a spaced space of the double wall PC 200 before the frame beam 60 is placed on the second wall PC 230 so that the concrete is placed on the second wall PC 230 Thereby preventing the double wall PC 200 from tilting or collapsing when the frame beam 60 is disposed.

The reinforcing bars 61 for reinforcement of the shear force are disposed on the second wall panels 230 and the reinforcing bars 61 are formed on the wall panels 60 and the double wall paper 200 Secondly, concrete is poured into the space. The second concrete slab is formed as the ceiling slab while being adhered to the frame beam 60 and the double wall PC 200. The ceiling slab thus formed is integrally formed with the double wall PC 200 .

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

210: 1st month PC 230: 2nd month PC
200, 200`: Double wall PC 201: Groove
220: fixed unit
30: floor slab 31: shear key
30`: ceiling slab 31`: rib

Claims (12)

A method of constructing a structure using a double concrete (Precast concrete)
Assembling the first month PC and the second month PC so that a space is formed between the first month PC and the second month PC; And
And placing the double wall PC on the base by positioning a reinforcing member installed to be exposed at an upper portion of the base in the spaced space of the double wall PC,
On the base, a step is formed by a set depth lower than the upper surface of the foundation for installing the double wall PC,
The insertion grooves being spaced apart from each other along a horizontal direction on one side of the first month PC or the second month PC,
After the step of installing the double wall PC,
The method of claim 1, further comprising the step of laying a floor slab on the foundation or the stepped portion, the bottom slab being formed by spacing away the shear keys inserted into the insertion groove along one side.
delete delete The method according to claim 1,
Through slits are formed between the insertion grooves,
The step of laying the floor slab on-
Installing a mold corresponding to the bottom slab on the foundation or the step;
Placing a slab reinforcement in the mold to penetrate through the through slits and into the spacing space of the double wall PC; And
Placing the concrete inside the mold, curing the concrete, and removing the mold.
The method according to claim 1,
Through holes are formed between the insertion grooves,
The step of laying the floor slab on-
Installing a mold corresponding to the bottom slab on the foundation or the step;
Placing a slab reinforcement through the through holes of the mold to partially enter the spaced apart spaces of the double wall PC; And
Placing the concrete inside the mold, curing the concrete, and removing the mold.
The method according to claim 1,
Before the step of producing the double wall PC,
And a reinforcing member provided with lattice bars between the lower wire mesh and the upper wire mesh is inserted into the concrete. The reinforcing member is inserted into the concrete, And curing the concrete when one of the lower wire mesh and the upper wire mesh contacts the first wire mesh to manufacture the first month PC; And
Further comprising the step of installing a second wire mesh inside the mold having protrusions corresponding to the insertion grooves and casting the concrete to form the second wall PC,
In the step of manufacturing the double wall PC,
The first wire PCC is rotated in a direction toward the second wall PC and the other of the lower wire mesh and the upper wire mesh contacts the second wire mesh after inverting the first wall PC, A method of constructing a structure using Double Wall PC to cure concrete of WALLPI.
The method according to claim 1,
After installing the double wall PC on the foundation,
Further comprising fixing the double wall PC and the foundation using a fixed unit.
The method of claim 7,
The fixed unit includes:
A bracket having one surface in surface contact with any one of the first month PC or the second month PC of the double wall PC and the other surface in surface contact with the base;
A fastening member for fastening the other surface of the bracket and the base at the same time;
A tie rod inserted through the bracket, the first wall PC and the second wall PC at the same time; And
And fixing nuts fastened to both sides of the tie rod, respectively.
The method according to claim 1,
After installing the double wall PC,
Further comprising the step of installing a ceiling slab on the upper side of the double wall PC.
The method of claim 9,
The thickness of one of the first month PC or the second month PC of the double wall PC is greater than the thickness of the other one of the first wall PC and the second wall PC,
Wherein the joining recesses are spaced apart from each other along the width direction on an upper side of the first month PC or the second month PC of the double wall PC.
The method of claim 10,
Wherein ribs are formed at one side of the ceiling slab so as to protrude downward and spaced apart from each other in the width direction,
In the step of installing the ceiling slab,
And inserting the ribs of the ceiling slab into the coupling grooves.
The method of claim 10,
A wall girder is disposed on the upper side of the first month PC or the second PC of the double wall PC,
The step of installing the ceiling slab may include placing the concrete in a spacing space between the rim and the double wall PC so that the concrete is adhered to the rim beam and the double wall PC while the ceiling slab is bonded to the double wall PC A method of constructing a structure using an integrally formed double wall PC.
KR1020150073862A 2015-05-27 2015-05-27 Method for constructing using a double wall Precast Concrete KR101556545B1 (en)

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KR101645538B1 (en) * 2015-12-30 2016-09-01 이형훈 Double wall and double wall structure produced by using double wall
KR101645525B1 (en) * 2015-12-30 2016-09-07 이형훈 Twin wall and twin wall structure produced by using twin wall
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KR20190042193A (en) 2017-10-16 2019-04-24 현대건설주식회사 Method for constructing wall structure using precast double wall
KR101979156B1 (en) * 2018-09-06 2019-05-16 유재천 Manufacturing method of PC double pannel using M type connecting member
KR102120426B1 (en) 2019-05-24 2020-06-09 티앤에스산업 주식회사 The prefabricated double wall precast concrete
KR20200138538A (en) 2019-05-31 2020-12-10 티앤에스 주식회사 Mold for prefabricated double wall precast concrete
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KR101645538B1 (en) * 2015-12-30 2016-09-01 이형훈 Double wall and double wall structure produced by using double wall
KR101696155B1 (en) 2016-07-18 2017-01-12 티앤에스 주식회사 Apparatus for manufacturing double wall precast concrete
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KR101912308B1 (en) * 2017-02-16 2018-10-26 주식회사 청진이엔씨 Construction structure of balcony integral type building structure
KR101835378B1 (en) * 2017-04-24 2018-03-08 주식회사 우리이앤씨 Wall structure using precast concrete panel and construction method thereof
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