KR20080103260A - Reinforcing bar assembly for separate concrete pours and strut system method utilizing the same - Google Patents

Reinforcing bar assembly for separate concrete pours and strut system method utilizing the same Download PDF

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Publication number
KR20080103260A
KR20080103260A KR1020070050333A KR20070050333A KR20080103260A KR 20080103260 A KR20080103260 A KR 20080103260A KR 1020070050333 A KR1020070050333 A KR 1020070050333A KR 20070050333 A KR20070050333 A KR 20070050333A KR 20080103260 A KR20080103260 A KR 20080103260A
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KR
South Korea
Prior art keywords
bars
reinforcing bar
reinforcing
pair
reinforcement
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Application number
KR1020070050333A
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Korean (ko)
Inventor
염경수
홍왕생
Original Assignee
주식회사 하모니구조엔지니어링
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Priority to KR1020070050333A priority Critical patent/KR20080103260A/en
Publication of KR20080103260A publication Critical patent/KR20080103260A/en

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • 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
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

An iron bar mesh for the separation mix is provided to suppress reverse propulsion joint generation and to secure structural stability and durability of structure. An iron bar mesh for the separation mix comprises a pair of circumference panels(100) which is arranged to separate, a top bar(120) which is arranged so that plural traverse bars(121) pass through and protrude, a bottom bar(130) which is arranged so that it passes while plural traverse bars(131) cross and protrude the lower part of a pair of circumference panels, a vertical web steel reinforcement(150) connecting traverse bar of the tom and bottom bar.

Description

Reinforcing bar assembly for separate concrete pours and strut system method utilizing the same}

1 to 3 is a view showing an embodiment of a reinforcing bar assembly according to the present invention.

4 and 5 are views showing a reverse support structure completed using the reinforcing bar assembly of FIGS. 1 and 2, respectively.

<Description of Major Symbols in Drawing>

100: rebar assembly

110: border plate 111: seating groove

120: upper reinforcement 130: lower reinforcement

140: bearing rebar 150: vertical web rebar

160: horizontal web rebar

200: temporary wall 300: the first cradle

400: second cradle 500: sun cast concrete

The present invention relates to a reinforcing bar assembly for separating casting and a reverse support structure using the same, and more particularly, a reinforcing bar assembly that enables stress transmission while separating both ends and a central part to be embedded in concrete, and using the reinforcing bar assembly. Thus, the reinforced concrete slab is constructed to support the temporary earthquake walls directly, but also relates to a reverse support structure in which the underground outer wall contacting the temporary earthquake walls can be continuously constructed.

In general, the underground structure is constructed by constructing the main wall wall such as H-Beam + earth plate, CIP (Cast in-Place Pile), SCW (Soil Cement Wall), and then excavating the inside of the wall to build the structure. Excavation process involves bracing work to support external force such as earth pressure delivered through wall. Generally, temporary walls, anchors, or permanent structures are used as the supporting method of the retaining walls. Among these, adjacent structures in the city center are constructed using the permanent structures for securing structural stability, shortening of air, and complaints. It is most advantageous when considering aspects such as suppression.

Reinforcement method using permanent structure is composed of reverse support method when engaged with reverse punching method. In such reverse support method, beams and / or slabs, which are horizontal interlayer structures in the basement of the building, are constructed to serve as a permanent structure for supporting the wall. . In particular, when the earthen wall is constructed as a temporary earthen wall, the underground outer wall is constructed so as to contact the temporary earthen wall, and the underground outer wall is only constructed after the interlayer horizontal structure of the rim beam or slab is completely constructed. In other words, the horizontal interlayer structure is extended to the basement outer wall in the form of slab or rim beam to be directly fixed to the temporary earthen wall, supporting external forces such as earth pressure, and then the basement outer wall part of the space separated by the interlayer horizontal structure. It is made by a post-construction method. At this time, a concrete sleeving sleeve (S) is installed on the slab or the rim beam which is pre-installed for the integration of the basement wall to be post-constructed, and furthermore, the basement outer wall of the upper and lower layers due to the difficulty of continuous reinforcement of the base reinforcing bar reinforcement. In order to integrate the separate dowel bar (dowel bar, B) will be installed.

However, concrete placing through the sleeve is not only difficult to install, but also makes it difficult to fill the concrete tightly, which causes inverse joints (interlayer gaps in the outer wall of the basement) on the bottom of the slab or rim beam. Inverted joints develop after the concrete shrinks and shrinks, causing the structural performance of the building to deteriorate. In other words, the inflow of groundwater through the inverted joint is easily made. The inflow of groundwater causes corrosion of reinforcing steel and deterioration of concrete, resulting in deterioration of durability of the structure.

Accordingly, the present inventors have developed a reinforcing support structure that enables continuous construction of the basement outer wall by using a reinforced assembly that enables stress transmission while separating the both ends and the central part and embedding it in concrete.

SUMMARY OF THE INVENTION The present invention has been made to improve the above-described problems, and the technical object of the present invention is to provide a reinforcing bar assembly that enables stress transmission while separating both ends and a central part to be embedded in concrete.

Another object of the present invention is to construct a reinforced concrete slab directly to support the temporary earthquake wall, while the basement outer wall in contact with the temporary earthquake wall, without the installation of sleeves or dowel bars, the vertical reinforcement of the underground outer wall between the continuous continuous reinforcement of the concrete between the floors continuously It is to provide a reverse support structure that can be cast.

The present invention for achieving the above object, a pair of border plates disposed to be spaced apart from each other; An upper reinforcing bar having a plurality of transverse bars disposed to protrude through the upper portion of the pair of edge plates; A lower reinforcing bar positioned below the upper reinforcing bar and having a plurality of transverse bars disposed to protrude through the lower part of the pair of edge plates; And a vertical web reinforcing bar connecting the transverse bars of the upper and lower bars in a mutual waveform.

In addition, the present invention is a reverse support structure of the underground retaining wall is completed by the reinforced concrete slab is constructed so as to directly support the temporary retaining wall,

Temporary wall; A first cradle mounted horizontally on the temporary soil wall; A second cradle arranged to be spaced apart from the first cradle; A reinforcing bar assembly installed to be mounted on the first cradle and the second cradle, wherein a pair of edge plates are respectively installed on the first cradle and the second cradle; And between the temporary soil wall and the rim plate of the reinforcing bar assembly on the first cradle so that the upper and lower reinforcing bars protruding through the pair of rim plates from the reinforcing bar assembly are embedded, and outside the rim plate of the reinforcing bar assembly on the second cradle. It provides a reverse support structure using a reinforcing bar assembly, characterized in that it comprises a;

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

1 to 3 is a view showing an embodiment of a reinforcing bar assembly according to the present invention. As shown in the drawing, the reinforcing bar assembly 100 includes a pair of edge plates 110, upper and lower reinforcing bars 130, and vertical web reinforcing bars 150 as essential components, and bearing reinforcing bars 140. And horizontal web reinforcement 160 as an additional component.

In the reinforcing bar assembly 100 of the present invention, a pair of edge plates 110 are disposed to be spaced apart from each other, and a plurality of transverse bars 121 and 131 constituting the upper and lower reinforcing bars 120 and 130 are connected to the pair of edges. It is completed by being disposed to protrude through the upper or lower portion of the plate 110. At this time, the stress transfer is achieved by the transverse bars 121 and 131 of the upper and lower reinforcing bars, in order to suppress the bending of the upper and lower reinforcing bars 120 and 130, and to smoothly transmit the stresses. The reinforcing bars 150 connect the transverse bars 121 and 131 of the upper and lower bars in a mutual waveform.

As a result of the configuration as described above, the reinforcing bar assembly 100 of the present invention can be used as a structure in which both ends are embedded in the concrete sphere bordering the pair of edge plates 110. That is, the pair of edge plates 110 serves as a form of formwork blocking the concrete from being placed therebetween, so that both ends of the upper and lower reinforcing bars 120 and 130 are bounded by the pair of edge plates 110. It is possible to install and install the reinforcing bar assembly 100 so that the center portion of the upper and lower reinforcement (120, 130) is exposed as it is embedded in the sphere (concrete fixing unit). When the reinforcement assembly 100 is installed and installed, the structure is configured to transmit stress (compression force) to the concrete fixing unit at the other end through the upper and lower reinforcing bars 120 and 130 exposed at the concrete fixing unit at one end.

Since the reinforcing bar assembly 100 of the present invention is fixedly installed by the method of pouring concrete outside the pair of edge plates 110, the edge plate 110 is soon constrained to concrete. Considering this installation state, the edge plate 110 is preferably made of steel to increase the composite strength with concrete, specifically, such as iron plate, wire mesh, metal lath, the thickness can withstand the concrete pressure It may be thin if it is enough.

Particularly, in the present invention, the transverse bars 121 and 131 of the upper and lower reinforcement bars are configured to be bent hoop muscles, and then the transverse bars 121 and 131 of the upper and lower reinforcement bars are arranged to be shifted to each other. It is proposed to complete the structure surrounding the longitudinal bars 122 and 132 of the lower reinforcement and the pair of edge plates 110. The bent hoop muscle acts as a shear reinforcement when it is settled in concrete. At this time, the upper and lower reinforcing bars (121, 131) of the overlapping joint portion of the reinforcing bars 140 can be further bonded so as to be arranged side by side with the edge plate 110, the bearing reinforcing bars 140 The reinforcement of the bent hoop muscles to reinforce the bending of the concrete anchorage. Of course, the horizontal bars 121 and 131 of the upper and lower reinforcing bars may protrude out of the edge plate 110 as they are not bent, and may be fixed to concrete.

In addition, the reinforcing bar assembly 100 of the present invention is completed so that the transverse bar (121, 131) of the upper and lower reinforcing bars to protrude through the pair of border plates 110, the upper and lower parts of the pair of border plates 110 A seating groove 111 or a through hole may be formed in advance so that the transverse bars 121 and 131 of the reinforcing bar are fitted into the seat. 1 to 3 show an example in which the seating groove 111 is formed in the edge plate 110. The seating groove 111 also serves to maintain the arrangement state of the upper and lower reinforcement (120, 130). At this time, the seating groove 111 of the rim plate is configured such that the portion where the transverse bar (121) of the upper reinforcement and the portion where the transverse bar (131) of the lower reinforcement are inserted into each other to form a step as shown in FIG. It can be, but the seating groove 111 of the step is to allow the transverse muscles 121 and 131 of the upper and lower reinforcement to be fitted into one seating groove 111 at the same time.

Reinforcing bar assembly of the present invention can be configured in various ways according to the installation method of the vertical web reinforcing bars 150, Figure 1 and Figure 2 is a representative example. Although not shown, it is also possible to install a mixture of the shape of the vertical web reinforcing bars 150 of FIG.

In the reinforcing bar assembly 100 of FIG. 1, the vertical web reinforcing bars 150 intersect the horizontal and horizontal rebars 121 and 131 arranging directions so that the horizontal and vertical rebars 121 and 131 are vertically aligned. This is an example of connecting. In order to install the vertical web reinforcement 150 as described above, the upper reinforcement 120 further includes a plurality of longitudinal reinforcements 122 disposed between the pair of edge plates 110 while being arranged under the transverse reinforcement 121. The lower reinforcement 130 is configured to further include a plurality of longitudinal roots 132 disposed between the pair of edge plates 110 while being disposed on the cross bars 131. When the upper and lower reinforcing bars (120, 130) are provided and vertical web reinforcing bars (150) connect the vertical and lower bars (122, 132) to each other in a waveform, the vertical web reinforcing bars (150) are immediately connected to the upper and lower parts. The rebars 121 and 131 are arranged to intersect with the direction in which the rebars are arranged, thereby forming a structure in which the transverse bars 121 of the upper and lower rebars are connected in the vertical direction.

In the reinforcing bar assembly 100 of FIG. 2, the vertical web reinforcing bar 150 is disposed in the same direction as the horizontal bar 121 and 131 of the upper and lower rebars, so that the horizontal bar 121 and 131 of the upper and lower bar rebars are disposed in the horizontal direction. This is an example of direct installation. Furthermore, in order to further increase the strength by connecting and restraining the adjacent cross bars, the horizontal web bars 160 connect the cross bars 121 of the upper bars in a wave form and cross the horizontal bars 131 of the lower bars. Here is an example of connecting the liver with a waveform.

4 and 5 are views showing an inverted support structure completed using the reinforcing bar assembly 100 of FIGS. 1 and 2, respectively. The reverse support structure according to the present invention is a reverse support structure of an underground soil wall, in which reinforced concrete slabs are constructed so as to directly support a temporary earthquake wall 200, and a temporary soil wall is made possible by separating concrete of the reinforced concrete slab. It is characterized in that it is possible to continuously construct a basement outer wall integrated in contact with the wall 200. Such a reverse support structure of the present invention is applicable to RC reverse punching method as well as steel frame punching method.

Specifically, the inverted support structure according to the present invention, the temporary soil wall 200; A first cradle 300 installed horizontally on the temporary barrier wall 200; A second cradle (400) spaced apart from the first cradle (300); The above reinforcing bars are installed to be mounted on the first cradle 300 and the second cradle 400, and the pair of edge plates 110 are installed on the first cradle 300 and the second cradle 400, respectively. Assembly 100; In the reinforcing bar assembly 100, the upper and lower reinforcing bars 130 protruding through the pair of edge plates 110 are embedded so that the temporary barrier wall 200 on the first cradle 300 and the border plate of the reinforcing bar assembly ( Between the 110 and the second mounting frame 400, the pre-casting concrete 500 that is cured by pouring out of the border plate 110 of the reinforcing bar assembly. The first and second mounting brackets 300 and 400 are members installed to support the reinforcing bar assembly 100, and the second mounting bracket 400 is installed as a formwork to be removed in the future or installed as a cheolgolbo to be permanently present. Can be. That is, when the present invention is applied to the RC reverse drilling method, when the second mounting base 400 is installed as a slab formwork, the reinforcing assembly 100 is installed on the slab formwork, and then the construction is carried out as shown in FIG. 4. Completed in the reverse support structure, when the present invention is applied to the steel frame reverse drilling method, when installing the second mounting base 400 as a steel beam beam, the steel assembly 100 is installed on the steel beam beam, and then the construction of the construction site 500 It is completed with a reverse support structure such as 5. Of course, in some cases, even when the present invention is applied to the steel frame reverse punching method, cheolgolbo can be omitted depending on the arrangement direction of the cheolgolbo. The reinforcing bar assembly 100 is preferably made for unit construction of a predetermined standard unit size according to the site size for the construction convenience.

Earth pressure in such a reverse support structure, temporary end wall 200, one end of the reinforcement assembly 100 is fixed by the sun-installed concrete 500, the center of the exposed reinforcement assembly 100, the sun-pouring concrete (500) It is delivered to the other end of the reinforcement assembly 100 is fixed by. After the excavation work, the center part of the exposed reinforcing bar is completely embedded in the basement wall concrete during the construction of the basement wall.In the exposed part of the reinforcing bar, the concrete in the basement wall is continuously placed while continuously reinforcing the vertical bars of the basement wall. You can do it.

Although the present invention has been described in detail with reference to the embodiments, those skilled in the art to which the present invention pertains will be capable of various substitutions, additions, and modifications without departing from the technical spirit described above. It is to be understood that such modified embodiments are also within the protection scope of the present invention as defined by the appended claims.

According to the present invention as described above, the following effects are expected.

First, it is possible to provide a reinforcing bar assembly that enables stress transmission while separating both ends and the center part to be embedded in concrete. Furthermore, when the reinforcing bar assembly is applied to the reverse support method, the reinforced concrete slab can be constructed so as to directly support the temporary barrier wall, while continuously constructing the basement outer wall which is integrally constructed in contact with the temporary barrier wall.

Second, since the concrete can be continuously placed between floors while vertically reinforcing vertical bars of the basement wall without installing sleeves or dowel bars, it is possible to easily complete the underground structure with the reverse support method. It can be suppressed to occur, which is advantageous to ensure structural stability and durability of the structure.

Claims (6)

A pair of border plates 110 disposed to be spaced apart from each other to face each other; An upper reinforcing bar 120 having a plurality of transverse bars 121 disposed to protrude through the upper portion of the pair of edge plates 110; A lower reinforcing bar 130 disposed below the upper reinforcing bar 120 and having a plurality of transverse bars 131 disposed to protrude through the lower part of the pair of edge plates 110; And, Vertical web reinforcing bars (150) for connecting the cross bars (121, 131) of the upper and lower reinforcement with each other in a waveform; Reinforcing bar assembly for separating pour, characterized in that comprises a. In claim 1, The vertical web reinforcing bar 150 is arranged in the same direction as the horizontal bar (121, 131) arrangement direction of the upper and lower reinforcement, characterized in that directly connecting the horizontal bar (121, 131) of the upper and lower reinforcement in the horizontal direction Rebar assembly for separate casting. In claim 1, The upper reinforcing rod 120 further includes a plurality of longitudinal bars 122 arranged side by side between the pair of border plates 110 while being arranged under the cross bars 121, The lower reinforcement 130 further includes a plurality of longitudinal bars 132 disposed side by side between the pair of edge plates 110 while being disposed on the transverse bars 131. The vertical web reinforcement 150 is disposed so as to intersect the transverse reinforcements 121 and 131 of the upper and lower reinforcement bars by connecting the longitudinal and reinforcing bars 122 and 132 of the upper and lower reinforcing bars in a wave form. Reinforcing bar assembly for separating casting, characterized in that to connect the reinforcing bars (121, 131) in the longitudinal direction. The method according to any one of claims 1 to 3, Separating further comprising a; horizontal web reinforcement 160 connecting the cross bars 121 of the upper reinforcement to each other in a waveform or connecting the cross bars 131 of the lower reinforcement to each other in a waveform; Rebar assembly for pouring. The method according to any one of claims 1 to 3, The transverse bar (121, 131) of the upper and lower reinforcement is made of bent hoop muscles are arranged so as to be offset from each other and connected to each other by overlapping joints are arranged to surround the pair of edge plates 110, Separating casting, characterized in that it further comprises a; and the reinforcing bar (121, 131) of the upper and lower reinforcing bars are bonded to the mutually overlapped portion and the bearing reinforcement 140 is disposed parallel to the edge plate 110 Reinforcing Bar Assembly As the reverse support structure of the basement wall, which is constructed by reinforced concrete slab to directly support the temporary wall, Temporary barrier wall 200; A first cradle 300 installed horizontally on the temporary barrier wall 200; A second cradle (400) spaced apart from the first cradle (300); Claim 1 is installed to be mounted on the first cradle 300 and the second cradle 400, a pair of edge plates 110 are installed so as to be positioned on the first cradle 300 and the second cradle 400, respectively Reinforcing bar assembly 100 of any one of claims 3 to 3; And, In the reinforcing bar assembly 100, the upper and lower reinforcing bars 130 protruding through the pair of edge plates 110 are embedded so that the temporary barrier wall 200 on the first cradle 300 and the border plate of the reinforcing bar assembly ( Between the 110 and the second placing 400, the pour concrete 500 is cast out of the rim plate 110 of the reinforcing bar assembly; Reverse support structure using a reinforcing bar assembly, characterized in that configured to include.
KR1020070050333A 2007-05-23 2007-05-23 Reinforcing bar assembly for separate concrete pours and strut system method utilizing the same KR20080103260A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101049949B1 (en) * 2009-03-19 2011-07-19 정용도 Vertical sphere structure using reverse punching method and its construction method
KR20170139741A (en) * 2016-06-09 2017-12-20 대림산업 주식회사 Pre-climbing core construction method for top-down construction
CN113339035A (en) * 2021-05-31 2021-09-03 汪辉 Hydraulic support
CN117605184A (en) * 2024-01-23 2024-02-27 北京市建筑工程研究院有限责任公司 Connecting wall structure, ultra-long seamless concrete wall and construction method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101049949B1 (en) * 2009-03-19 2011-07-19 정용도 Vertical sphere structure using reverse punching method and its construction method
KR20170139741A (en) * 2016-06-09 2017-12-20 대림산업 주식회사 Pre-climbing core construction method for top-down construction
CN113339035A (en) * 2021-05-31 2021-09-03 汪辉 Hydraulic support
CN117605184A (en) * 2024-01-23 2024-02-27 北京市建筑工程研究院有限责任公司 Connecting wall structure, ultra-long seamless concrete wall and construction method thereof
CN117605184B (en) * 2024-01-23 2024-04-16 北京市建筑工程研究院有限责任公司 Connecting wall structure, ultra-long seamless concrete wall and construction method thereof

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