KR20100074609A - Method for constructing arch-shaped concrete structure using air screen and arch-shaped structure constructed by the same - Google Patents

Method for constructing arch-shaped concrete structure using air screen and arch-shaped structure constructed by the same Download PDF

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Publication number
KR20100074609A
KR20100074609A KR1020080133093A KR20080133093A KR20100074609A KR 20100074609 A KR20100074609 A KR 20100074609A KR 1020080133093 A KR1020080133093 A KR 1020080133093A KR 20080133093 A KR20080133093 A KR 20080133093A KR 20100074609 A KR20100074609 A KR 20100074609A
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South Korea
Prior art keywords
air
layer
air film
formwork
membrane
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KR1020080133093A
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Korean (ko)
Inventor
양효식
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양효식
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Priority to KR1020080133093A priority Critical patent/KR20100074609A/en
Publication of KR20100074609A publication Critical patent/KR20100074609A/en

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/36—Scaffolds for particular parts of buildings or buildings of particular shape, e.g. for stairs, cupolas, domes
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/04—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for structures of spherical, spheroid or similar shape, or for cupola structures of circular or polygonal horizontal or vertical section; Inflatable forms
    • E04G11/045—Inflatable forms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E04B2001/3217—Auxiliary supporting devices used during erection of the arched structures

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

The present invention enables the construction of an arched concrete structure such as a dome shape or a tunnel shape in a short period of time at low cost, and more specifically, the reinforcement is made by the inner surface and the outer surface of the air film on the top of the foundation concrete, By forming a heat insulating layer and a shotcrete layer on the inner surface, and a lower cement layer and an upper shotcrete layer on the outer surface of the air film,

It is possible to construct an arch structure with more durability and stiffness by the shotcrete layer and cement layer formed on the inner and outer surfaces of the form made of air film, but instead of manufacturing the inner arch formwork and supporting work to support it. By simply replacing it, it is possible to reduce the rent and construction cost of the support and significantly shorten the construction period.In case of camouflage, such as military facilities, the camouflage film is formed on the outer surface of the air film, or the vine plant is grown from the ground. It is about the construction method of reinforced concrete arched structure and its structure which can be constructed to camouflage the whole structure effectively.

Description

Method for constructing arch-shaped concrete structure using air screen and arch-shaped structure constructed by the same}

The present invention enables the construction of an arched concrete structure such as a dome or a tunnel in a short period of time at low cost, and more specifically, by forming an insulating layer and a shotcrete layer on the inner surface of the air film by using the air film inflated by air pressure. By forming the ready-mixed concrete and shotcrete layer on the outer surface of the membrane, the structural rigidity of the arch-shaped structure using the air membrane can be greatly reduced while the construction period can be greatly reduced, and the construction cost can be used as a structure for various uses.

In general, in the case of a structure having an arcuate cross section, such as a dome structure or a tunnel structure, a frame is erected with steel frame, and the wall is constructed by installing insulation and placing a ready-mixed concrete in the state of building an outer wall by sheet formwork on the outside of the steel frame.

Such arch structures are used as design elements of various buildings, and they are applied to military facilities that require camouflage such as border guards, ammunition warehouses, and dangerous goods storage warehouses.

In other words, in order to construct the arch structure as described above, a support construction for holding it in the state of constructing the internal arch formwork should be accompanied, and after the process of curing by injecting concrete mortar between the formwork, the concrete When is fully cured, the construction of the arched structure is completed as the support and formwork removal process is performed.

However, the method for constructing the arched structure as described above takes the manufacturing cost of the individual production and support of the formwork, there is a problem that the rent of excessive equipment is spent in the case of renting them to reduce their production cost. .

In addition, the support and formwork as described above should be installed in the interior space of the arch structure, so the work is not very slow due to the narrow space of work, and the structure of the spherical structure must be constructed using individual formwork. There is a waste stage that performs a preliminary process that is too long for the curing time of the structure. In particular, since a lot of safety accidents occur in the process of performing a combination of the individual formwork and the support as described above, there are various problems, such as having to prepare a high level of safety measures for safety accidents.

Accordingly, the applicant of the present invention forms an air pressure through a blower inside the air film sealed inside, as in Patent Registration Nos. 10-0382269 and 10-0382270, and then expands the air film in an arcuate shape. As the heat insulation layer and the shotcrete layer were placed on the inner surface of the membrane, a dome structure and a construction method that allowed the rapid construction of the arched structure at low cost were devised.

However, such a dome structure is not suitable for a large dome structure or a tunnel structure due to its weak structural rigidity, it is not beautiful in appearance, such as the air film is exposed to the outside.

That is, the domed structure as described above is uniform in the overall thickness of the arcuate cross section, and yet has a very weak structure from the concentrated load acting on the lower part of the arcuate structure, but it is a structure that forms a heat insulation layer and a shotcrete layer on the inner surface of the air film, and thus has sufficient rigidity. In order to maintain the repeated shotcrete is applied there is a problem that the volume loss to the interior space of the dome structure occurs.

In addition, when the outer surface of the dome structure is completely exposed, the air film itself becomes an exterior body, and thus the exterior is not beautiful but also does not add various decorative or beautiful design elements, and the dome structure is a military facility. If you want to use it will not be able to perform the corresponding camouflage treatment.

The present invention is to solve the problems as described above, in the form of the form using the air film is completed in order to form a thermal insulation layer and a shotcrete layer on the base reinforcement and reinforcement reinforcement on the inner surface of the air film, the base steel and the outer surface of the air film By using reinforcement of reinforcing bars to form a concrete layer up to one-third of the total height and the remaining plaster and finish layers, a rigid arched structure with an air film installed is constructed.

While it is possible to construct more reinforced dome structures or tunnel structures, it is possible to reduce construction costs and to shorten the construction period, so that the arch type using air membrane formwork that reasonably overcomes all the problems of the conventional construction method for dome structures It is an object of the present invention to provide a construction method of the structure and an arcuate structure by the construction method.

The present invention for achieving the object as described above, by fixing the edge of the air membrane using the inner anchor groove formed in the base concrete to maintain the airtight to the inside, by filling the air inside the air membrane to the air pressure After inflated by

A primary urethane layer is applied to the inner surface of the air film, and a secondary urethane layer is applied to the primary urethane layer while the rebar hanger is fixed and then transversely reinforced to the wire of the rebar hanger protruding into the secondary urethane layer. Hypothesis is to connect the longitudinal reinforcement to the basic reinforcement of the foundation concrete to be reinforced with the transverse reinforcement, and to form the inner wall by repeatedly forming a shot concrete layer so that the reinforcement is buried,

On the outer surface of the air membrane, the reinforcing bars are reinforced vertically and horizontally by using the basic reinforcement of the foundation concrete, and a formwork is installed on the outer lower side of the air membrane to form a ready-mixed concrete layer through the formwork. A shotcrete layer is formed to form an outer wall, and the inner wall and the outer wall are cured and constructed on the inner and outer surfaces of the air film, respectively.

The present invention, while the construction of the arched structure having the durability and rigidity further strengthened by the shotcrete layer and the ready-mixed concrete layer formed on the inner surface and the outer surface of the form of the air film, and the support construction to support it Instead, the air membrane can be simply replaced to reduce support rent and construction costs, thereby significantly reducing construction time.

In addition, if camouflage is required, such as military facilities, wire mesh can be attached to the outer surface of the air film to form a camouflage film or grow vines from the ground to camouflage the entire structure to effectively construct structures for military facilities. It is.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor may properly define the concept of the term to describe its invention in the best possible way And should be construed in accordance with the principles and meanings and concepts consistent with the technical idea of the present invention.

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

1 is an overall cross-sectional view of the arch structure according to the present invention, Figure 2 is an enlarged cross-sectional view of the arch structure according to the present invention.

The arch structure according to the present invention, the inner anchor groove 11 and the outer anchor groove 12, the inner reinforcement groove 11 and the outer anchor groove 12, the basic reinforcing bars 13, 13 'protrudes To form the base concrete 10 of the shape, the inner groove 11 is fixed to the air film 20 is in close contact with the edge,

On the inner surface of the air membrane 20, a heat insulating layer 51 and a shotcrete layer 52 are sequentially formed, and a wire 41 is protruded by embedding a reinforcing hanger 40 in the heat insulating layer 51 and the base reinforcing bar (13) and the wire 41 to form a longitudinal, transverse bar 50, the shotcrete layer 52 is repeatedly laid so that the bark 50 is buried, and hardened,

On the outer surface of the air film 20, longitudinal and horizontal barges 50 ′ are formed through the base reinforcement 13 ′, and the ready-mixed concrete layer 53 under the air film 20 is buried so that the above bar codes 50 ′ are buried. ) And the upper shotcrete layer 54 are formed sequentially.

At this time, by manufacturing the air membrane 20 in the form of a dome or in the form of a tunnel it is possible to complete the arched dome structure or arched tunnel structure.

Hereinafter, the construction process for the arch structure as described above will be described by the drawings.

1. Foundation concrete work

As shown in FIG. 3a, the work of the foundation concrete 10 constitutes the inner anchor grooves 11 and the outer anchor grooves 12 on both sides of the foundation concrete 10, and then processes the inner bottom of the anchor grooves with a rough surface to be anchored later. When the concrete is placed in the upper groove to facilitate the support and bonding of the internal strength, the inner reinforcement groove (11) and the outer reinforcement groove (12) in the center of the reinforcing bars (13, 13 ') are constructed to be located.

2. Construction of air membrane

The air membrane 20 made of a synthetic sheet of non-breathable high tensile strength is closely attached to the inner surface of the inner groove 11 of the concrete 10 with a steel band 30, and then the concrete nail 31 is spaced at a predetermined interval. After driving and fixing to ensure airtightness, the blower is operated to expand the air pressure inside the air membrane 20. Subsequently, the blower is operated for about 12 hours to perform a process of stabilizing the internal air pressure of the air membrane 20.

The internal air pressure gradually rises, and a one-way entrance (making a jaw to be opened only inward) is installed before the air membrane 20 fully expands.

3. Construction of insulation

As shown in FIG. 3B, the urethane is sprayed on the entire inner surface of the air membrane 20 in a helical direction starting from the bottom of the inner foundation of the air membrane 20. The thickness of the primary urethane is about 2.5 cm.

Separately manufactured rebar hanger (40) with a space of about 30 ~ 40cm and plugged into the inner wall of the urethane primary construction in the transverse side, and spraying the urethane 2.5cm secondly again, only the wire (41) on the surface of the secondary urethane Make a towering shape. At this time, the primary urethane and the secondary urethane is to form a heat insulating layer 51 of excellent performance.

4. Construction of reinforcement and shotcrete of medial rebar

Reinforcement by reinforcing bars in the longitudinal and transverse directions by connecting the reinforcing bar 13 at the bottom of the internal foundation concrete 10 to the longitudinal upper end and connecting the rebars laterally using the wire 41 of the rebar hanger 40 This is done.

The electrical wiring (P pipe) to be constructed on the wall side, piping materials, electrical switch cover, etc. are woven into the reinforcing bars, and the switches and electrical sockets, which are to be exposed later, are wrapped and covered with blue tape.

Next, as shown in FIG. 3c, the shotcrete is sprinkled in a spiral direction from the lower side to the upper side. In this case, to reduce the Bound of the aggregate, the aggregate uses about 8 m / m, and a fastener and a crack prevention solvent are added. .

After curing the first shotcrete several times, the shotcrete is constructed to meet the internal primary design dimension (thickness) .After curing of the final shotcrete layer 52 after the last shotcrete work, the blower is withdrawn and internal plastering is performed. The first reinforced concrete structure of the complete waterproof, outer wall insulation tank is completed, but the design dimension (thickness) of the final concrete structure is satisfied through the reinforced concrete work on the outer surface of the air membrane 20 second.

5. External reinforcing bar reinforcement and concrete construction

After curing of the concrete structure inside the air membrane is completed as described above, the external reinforcement construction and reconstruction of the concrete to meet the dimensions of the designed concrete in consideration of the wind speed or other conditions are carried out, as shown in Figure 3d the foundation concrete (10) The height of the external formwork formed on the lower side of the air film 20 in the state of forming the longitudinal and horizontal reinforcement 50 'by using the basic reinforcing bars 13' is about one third the height of the top of the structure. It is installed only to form the concrete through the formwork, and the slope of more than the height is finished by the plastering work after installation of the scaffold, the outer surface of the air film 20, the concrete layer of the lower concrete layer and the upper shotcrete layer ( 54) is formed.

Accordingly, the ready-mixed concrete layer 53 and the shotcrete layer 54 may be finished as shown in FIG. 3E by finishing with a smooth surface through plastering.

The construction method of the present invention as described above can build a reinforced concrete structure based on the existing structure as a base frame, and is very suitable for building a military boundary post, an ammunition warehouse, a dangerous goods storage warehouse, and the like.

In addition, by adding reinforced concrete work according to the design dimensions to the entire external surface of the existing structure and by changing the structure of the anchor groove of the foundation concrete into the form of a double bone structure, the reinforced concrete layer on the inner and outer surfaces of the air membrane 10 This makes it possible to construct a more reinforced structure.

In particular, the arched structure according to the present invention can be constructed in a dome-shaped structure as shown in Figure 4 or to complete the arched tunnel structure as shown in Figure 5, the tunnel-shaped structure is a dome-shaped air membrane 20 ) Take the form of a continuous connection, the heat insulating layer and the shotcrete layer in the left and right directions to the inner surface and the outer surface of the air film 20 to be performed in sequence.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the present invention as defined by the appended claims. Examples should be understood.

1 is an overall cross-sectional view of an arched structure according to the present invention

Figure 2 is an enlarged cross-sectional view of the arch structure according to the present invention

3a to 3e is a construction process diagram of the arch structure according to the present invention,

3A is an enlarged view of the foundation concrete

3B is a state in which a heat insulation layer is formed on the inner surface of the air film

Figure 3c is a state in which the shotcrete layer is formed on the inner surface of the heat insulating layer

3D is a state diagram in which a lower ready-mixed concrete layer is formed on the outer surface of the air film

3E is a state diagram in which an upper shotcrete layer is formed on an outer surface of an air film

Figure 4 is a perspective view of the arched dome structure according to the present invention

5 is a perspective view of an arcuate tunnel structure according to the present invention;

Explanation of symbols on the main parts of the drawings

10: foundation concrete 11: inner anchor groove

12: outer anchor groove 13,13 ': foundation rebar

20: air curtain

30: steel band 31: concrete nail

40: rebar hanger 41: wire

50,50 ': Barrel 51: Insulation layer

52: shotcrete layer 53: ready-mixed concrete layer

54 shotcrete layer

Claims (6)

After fixing the edge of the air membrane by using the inner anchor groove formed in the foundation concrete to maintain the airtightness to the inside, by filling the air inside the air membrane to expand the air membrane by air pressure, A primary urethane layer is applied to the inner surface of the air film, and a secondary urethane layer is applied to the primary urethane layer while the rebar hanger is fixed and then transversely reinforced to the wire of the rebar hanger protruding into the secondary urethane layer. Hypothesis is to connect the longitudinal reinforcement to the basic reinforcement of the foundation concrete to be reinforced with the transverse reinforcement, and to form the inner wall by repeatedly forming a shot concrete layer so that the reinforcement is buried, On the outer surface of the air membrane, the reinforcing bars are reinforced vertically and horizontally by using the basic reinforcement of the foundation concrete, and a formwork is installed on the outer lower side of the air membrane to form a ready-mixed concrete layer through the formwork. A method of constructing an arcuate structure using an air film formwork, wherein a shotcrete layer is formed to form an outer wall, and the inner wall and the outer wall are cured on the inner and outer surfaces of the air film. The method of claim 1, A method of constructing an arcuate structure using an air film formwork, characterized by forming a finishing layer by plastering on the inner wall surface of the air film by the shotcrete layer and the outer wall surface of the air film. The method of claim 1, The formwork for forming the ready-mixed concrete layer is constructed to have a height of 1/3 with respect to the total height of the air film, so that the outer lower part having a sharp inclination angle of the air film is stabilized by the formwork, and the air above the formwork having a gentle inclination The outer surface of the membrane is a construction method of the arched structure using the air membrane formwork, characterized in that the shotcrete layer is formed by the installation of the upward zigzag form. Basic concrete 10 having an inner anchor groove 11 and an outer anchor groove 12 and having a basic reinforcing bar 13 and 13 ′ protruded into the inner anchor groove 11 and the outer anchor groove 12. To form, the inner anchor groove 11 is fixed to the air film 20 is in close contact with the edge, On the inner surface of the air membrane 20, a heat insulating layer 51 and a shotcrete layer 52 are sequentially formed, and a wire 41 is protruded by embedding a reinforcing hanger 40 in the heat insulating layer 51 and the base reinforcing bar (13) and the wire 41 to form a longitudinal, transverse bar 50, the shotcrete layer 52 is repeatedly laid so that the bark 50 is buried, and hardened, On the outer surface of the air film 20, a vertical and horizontal bar 50 'is formed through the base reinforcing bars 13', and the ready-mixed concrete layer under the air film 20 is buried so that the bar 50 'is buried. 53) and the arch structure by the construction method of the arch structure using the air film formwork, characterized in that formed by sequentially forming the upper shotcrete layer (54). The method of claim 4, wherein By constructing the air membrane 20 in a dome shape, the dome-shaped structure is completed by the heat insulating layer 51 and shotcrete layers 52 and 54 formed on the inner and outer surfaces of the air membrane 20. Arch structure by the construction method of the arch structure using the air membrane formwork. The method of claim 4, wherein By constructing the air membrane 20 in a form in which the dome is repeatedly connected, the structure in the form of a tunnel by the heat insulating layer 51 and the shotcrete layers 52 and 54 formed on the inner and outer surfaces of the air membrane 20 Arch structure by the construction method of the arch structure using the air film formwork, characterized in that completed.
KR1020080133093A 2008-12-24 2008-12-24 Method for constructing arch-shaped concrete structure using air screen and arch-shaped structure constructed by the same KR20100074609A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106555437A (en) * 2016-10-20 2017-04-05 中建三局集团有限公司 A kind of GRC template systems of spherical shell structure and its construction method
CN108951873A (en) * 2018-07-27 2018-12-07 庐江荣睿建设工程有限公司 A kind of air film concrete construction formwork construction technology
CN109235641A (en) * 2018-09-26 2019-01-18 中成空间（深圳）智能技术有限公司 Air film drag-line fixes device
CN109339239A (en) * 2018-11-06 2019-02-15 深圳市博德维环境技术股份有限公司 Pneumatic membrane building and play system
CN114893044A (en) * 2022-05-27 2022-08-12 山西二建集团有限公司 Construction method of air film spherical bin

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106555437A (en) * 2016-10-20 2017-04-05 中建三局集团有限公司 A kind of GRC template systems of spherical shell structure and its construction method
CN108951873A (en) * 2018-07-27 2018-12-07 庐江荣睿建设工程有限公司 A kind of air film concrete construction formwork construction technology
CN109235641A (en) * 2018-09-26 2019-01-18 中成空间（深圳）智能技术有限公司 Air film drag-line fixes device
CN109235641B (en) * 2018-09-26 2024-04-23 中成空间（深圳）智能技术有限公司 Air film guy cable fixing device
CN109339239A (en) * 2018-11-06 2019-02-15 深圳市博德维环境技术股份有限公司 Pneumatic membrane building and play system
CN109339239B (en) * 2018-11-06 2024-03-12 深圳市博德维环境技术股份有限公司 Air film building and playing system
CN114893044A (en) * 2022-05-27 2022-08-12 山西二建集团有限公司 Construction method of air film spherical bin
CN114893044B (en) * 2022-05-27 2024-04-16 山西二建集团有限公司 Construction method of air film spherical bin

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