KR101152270B1 - Precast concrete slab system for building which have long span and require high design load and construction method using this system - Google Patents

Precast concrete slab system for building which have long span and require high design load and construction method using this system Download PDF

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KR101152270B1
KR101152270B1 KR1020120010774A KR20120010774A KR101152270B1 KR 101152270 B1 KR101152270 B1 KR 101152270B1 KR 1020120010774 A KR1020120010774 A KR 1020120010774A KR 20120010774 A KR20120010774 A KR 20120010774A KR 101152270 B1 KR101152270 B1 KR 101152270B1
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South Korea
Prior art keywords
slab
rib
plate
shear
concrete
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KR1020120010774A
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Korean (ko)
Inventor
고수
이원규
최일섭
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(주)연우건축구조기술사사무소
정원이엔씨(주)
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/61Connections for building structures in general of slab-shaped building elements with each other
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/43Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0645Shear reinforcements, e.g. shearheads for floor slabs

Abstract

PURPOSE: A PC(precast concrete) slab for a long-span and high-load building and a construction method thereof are provided to minimize cracks generated between plates by efficiently transferring an unbalanced load to the plates. CONSTITUTION: A PC slab(10) for a long-span and high-load building is composed of a bottom part(11), multiple rib parts(12), and a top part. The bottom part is reinforced by reinforcing bars or wire meshes arranged in a latticed shape. The ribs are protruded from the bottom part in a longitudinal direction. Shear reinforcement bars(122) are arranged along the longitudinal direction of the ribs. The top part is formed on the top of the rib parts to be parallel to the bottom part. L-shaped reinforcing bars(131) for transferring an unbalanced load are arranged on both ends of the top part at uniform intervals.

Description

Precast Concrete Slab System for Building which have Long Span and require High Design Load and Construction Method using this system}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PC slab system, and more particularly, to a PC slab and a construction method which can be reasonably applied to a long span, heavy load distribution center or warehouse building.

The demand for distribution centers and warehouse buildings continues to increase, and these buildings are formed of repetitive flat modules, so that hollow core slabs and double t slabs are considered in consideration of economic feasibility and constructability. Precast Concret Slab systems, such as Multi Ribbed Slab and Inverted Multi Ribbed Slab, are frequently applied.

However, as distribution centers and warehouse buildings require long spans of more than 11m and large design loads of more than 20kN / ㎡, existing PC slab systems are difficult to secure economic feasibility, constructability and structural stability.

For example, hollow core slabs can be applied to long span buildings for small design loads, but shear reinforcement is not added to the slabs. Therefore, they are applied to steel span structures with large design loads above 20 kN / ㎡. The dance is fundamentally inapplicable because the dance grows irrationally.

Double tee slabs, multi-ribbed slabs, and reverse multi-ribbed slabs can be applied to long-span, high-load distribution centers and warehouse buildings because shear reinforcement can be placed, but they are economically insignificant due to the large dance.

As a background art of the present invention, there is a published Patent No. 2009-0050520 'Ribbed Half PC Bottom Plate and a Manufacturing Method thereof' (Patent Document 1).

This prior art includes a precast concrete plate molded to be integrally formed with a plurality of ribs in a longitudinal direction on an upper portion of a thin plate-like plate, and a rib provided between the ribs. Suggests PC bottom plate.

Accordingly, compared to the conventional double tee slab, since the beam shape does not protrude into the lower surface of the plate, free plane planning is possible.Because the foam polystyrene is filled between the ribs, it is possible to reduce the amount of cast-in-place concrete. Has an advantage.

However, since the rigidity of the upper part of the rib is open compared to the closed section, the rigidity is smaller than that of the closed section. Support reinforcement may be required, and if the lower support reinforcement is impossible, there is a fear that the dance of the cross section of the member becomes large.

In addition, the joint between the bottom plate and the bottom plate is a structure in which the topping concrete is integrated into the space formed by facing the grooves formed on the side of the bottom plate on both sides. When constructed, there is a disadvantage in that cracks are liable to occur at the joint due to an unbalanced load on the upper part.

Publication No. 2009-0050520 'Ribbed Half PC Bottom Plate and Manufacturing Method thereof' (published May 20, 2009)

The present invention is to solve all the problems of the existing long span, high load slab system, provides a new long span, high-load PC slab and construction method that can be reasonably applied to the distribution center and warehouse building. It is aimed to be.

Specifically, in the case of having a long span structure of 11 m or more and requiring a large design load of 20 kN / m 2 or more, the slab cross section must form a closed cross section rather than an open cross section to withstand a large load through a large cross section coefficient. However, it is disadvantageous and economical in the floor area because a large dance is required to resist the large shear force only by the concrete cross section of the PC slab without additional shear reinforcement arrangement.

In addition, the application of PC slabs to long span, heavy load buildings can easily cause cracks between the plates and the slabs, and due to the unbalanced loads on the slab plate, the upper level concrete ( Since topping or overlay concrete can be poured, there is a need for a method of smoothly transferring unbalanced loads between plates and reducing cracks.

Therefore, in the present invention, it can withstand large loads without increasing the dancing, which is advantageous in the floor height and can smoothly transfer the unbalanced loads acting between the plates and the plates, so that the long span is suitable for large distribution centers and warehouse buildings that can minimize the occurrence of cracks. To provide a high load PC slab and its construction method.

The PC slab suitable for the long span heavy load building according to the present invention is integrally formed using concrete, and includes a lower surface portion, a plurality of rib portions protruding in a longitudinal direction at regular intervals along the width direction of the lower surface portion, and a slab. The central portion in the longitudinal direction has a closed cross section, and both ends have a cross-sectional shape composed of an upper surface portion formed parallel to the lower surface portion on the upper portion of the rib portion so as to have an open cross section. The lower surface portion and the upper surface portion are reinforced with reinforcing bars or wire meshes that are arranged in a lattice form. Compression prestress is further introduced into the lower surface portion through the tension member disposed in the longitudinal direction in the lower cross section of the lower lower surface portion of each rib. Shear connecting grooves are formed on the outer surface of the rib portion located at the outermost side of the rib portion to secure the integrity of the joint between the slab plate and the plate, respectively. The space formed by the shear connection grooves of both slabs adjacent to each other is filled with concrete during pouring concrete to ensure the integrity of the joint between the slab plate and the plate. Shear reinforcing bars are bent at the ribs by bending a single reinforcing bar to form a corrugated shape in which the peaks and valleys continue in the height direction over the entire length along the longitudinal direction. The mountain part of the shear reinforcing bar is installed to be exposed upward of the upper surface part. At both ends of the upper surface portion, an L-shaped reinforcing bar for unbalanced load transmission is arranged, in which L-shaped bent bars are bent in a U-shape at regular intervals along the longitudinal direction. The L-shaped rebar for unbalanced load transfer has its horizontal part embedded in the upper part, and the vertical part is installed so as to protrude above the upper part, and the vertical part is formed by the shear connection grooves of both slabs adjacent to each other after mounting the slab. It is bent in to ensure the integrity of the joint between the slab plate and the plate together with the concrete, and smoothly transmit the unbalanced load at the top.

In this case, an unbalanced load transmission reinforcing bar may be further installed in the space formed by the shear connection groove of the adjacent slab.

In addition, the foam may be further filled between the rib portions closed by the upper surface portion.

The construction method of PC slab according to the present invention comprises the steps of: (a) mounting the PC slab according to the present invention on a beam; (b) bending the vertical portion of the L-shaped rebar for shearing unbalanced load into spaces between adjacent PC slabs mounted on beams; And (c) placing the overlay concrete on the upper surface of the PC slab so that the concrete is filled in the space between the adjacent PC slabs and the pockets of the PC slabs neighboring each other in the longitudinal direction on the beam.

At this time, in step (b), it may further comprise the step of further installing a reinforcing bar for unbalance load transfer to the space.

The PC slab system proposed in the present invention has a closed cross section with a large cross-sectional coefficient, a shear reinforcement bar is disposed to resist shear force, and a reinforcement detail is applied to reduce cracks between the slab plate and the plate and to smoothly transfer the upper unbalanced load. It can be applied to distribution centers and warehouse buildings with long spans, heavy loads, and it can withstand large loads without increasing dance, which is advantageous in flooring and can smoothly transmit unbalanced loads between plates. It has an effect.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a perspective view showing a PC slab suitable for a long span heavy load building according to an embodiment of the present invention, Figure 2 is a cross-sectional view, Figure 3 is a plan view.
Figure 4a is a perspective view showing a shear connecting rebar provided in the rib portion.
Figure 4b is a perspective view showing the L-shaped reinforcing bar for unbalanced load transmission.
5 is an exemplary view showing a state in which the L-shaped reinforcing bar for the unbalanced load and the reinforcing bars for the unbalanced load transmission are installed at the junction between the slab plate and the plate.
FIG. 6 is a view sequentially illustrating a method of constructing a floor plate using a PC slab suitable for a long span heavy load building according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

As shown in Figures 1 to 3, the PC slab 10 according to an embodiment of the present invention, is formed integrally using the concrete, the lower surface portion 11 and the width direction of the lower surface portion 11 Accordingly, the plurality of ribs 12 protruding in the longitudinal direction at a predetermined interval, and the center portion in the longitudinal direction of the slab to be a closed cross-section and both ends of the rib portion 12 to the open end surface so that the lower surface portion ( It consists of an upper surface portion 13 formed in parallel with 11).

The lower surface portion 11 is reinforced with reinforcing bars or wire meshes 111 that are all arranged in a lattice form. In addition, compression prestress is further introduced through a tension member 112 composed of PC steel bars or PC strands arranged in the longitudinal direction in the lower face 11 of the bottom of each rib 12. Therefore, the lower surface portion 11 having a thin plate shape can effectively resist the tensile force under long span and high load.

Since the PC slab according to the present invention precast concrete about half of the structural cross-section, structural thin plate behavior is inevitable, and cracking may occur during demolding, transportation, assembly, and cast-in-place concrete. Therefore, the reinforcement problem of the plate is the biggest problem in the precast concrete member having a thin plate form. The cracks in these precast concrete plates affect the bottom plate collapse and sag increase, so appropriate measures should be taken to prevent cracking. To this end, in the present invention, the rib portion 12 is formed on the upper surface of the lower surface portion 11 composed of a thin plate.

The rib portion 12 is formed on the upper surface of the lower surface portion 11 over the entire length in the longitudinal direction at regular intervals along the width direction of the lower surface portion 11. The rib portion 12 formed at regular intervals reinforces the strength and rigidity of the lower surface portion 11 without significantly increasing its own weight, thereby making the prestress introduced into the lower surface portion 11 and the closed cross section described later, The PC slab 10 according to the present invention together with the supporting upper surface portion 13 can be made longer and can support high loads. The cross-sectional shape is not limited to the cross-sectional shape shown, but may be formed into various cross-sectional shapes.

Shear reinforcement 122 is reinforced to rib portion 12 in the height direction over its entire length along its longitudinal direction. The PC slab according to the present invention generates a large shear force in the rib portion 12 by the working load for the long span, high load, and to resist it only in the concrete cross section, a large dance is required, which is disadvantageous in the layered portion and economical efficiency. Therefore, in the present invention, the shear reinforcing reinforcement 122 is placed on the rib 12 to resist the shear force along with the concrete cross section.

Shear reinforcing reinforcement 122 is a single reinforcing bar bent so that the mountain and the valley to form a corrugated shape as shown in Figure 4a, there is an advantage that can simplify the reinforcement while satisfying the amount of reinforcement required for the rib portion 12 reinforcement have. The mountain portion 122a of the shear reinforcing bar 122 is installed to be exposed upward of the upper surface portion 13. The exposed mountain portion 122a can be used as a bilateral hook for lifting the slab and can enhance the synthesizing effect with the overlaid concrete that is cast in place as a shear connector, and facilitates the slab upper reinforcement work. At both ends in the longitudinal direction of the rib part 12, the mountain portions 122a of the two shear reinforcing bars 122 are arranged to face each other so as to resist the shear force acting greatly at the end.

Shear connecting grooves 123 are formed on the outer surfaces of the rib portions 12a and 12a located at the outermost side of the rib portion 12 to secure the integrity of the joint between the slab plate and the plate. The space formed by the shear connection grooves 123 of both sides of the slab adjacent to each other is filled with concrete at the time of pouring concrete to ensure the integrity of the joint between the slab plate and the plate. The lower portion of the outer surface of the rib portion 12 surrounding the shear connection groove 123 is projected outward more than the upper portion so that the shear connection grooves of both slabs on the upper side when the adjacent slabs are installed as shown in FIG. An opening through which the concrete can be poured is formed in the space s formed by 123.

An upper surface portion 13 is formed at the upper portion of the rib portion 12 in parallel with the lower surface portion 11. The upper surface portion 13 is formed in the same plate shape as the lower surface portion 11 and is reinforced with a reinforcing steel bar or wire mesh 111 is arranged in a lattice form as a whole. The overall length of the upper surface portion 13 is shorter than the rib portion 12 so that the center portion of the rib portion 12 is closed and both ends are open. Therefore, the slab according to the present invention has a closed section in the center in the longitudinal direction and an open section in both ends. As described above, the ribs 12 are closed by the upper surface 13 so that the central portion is configured to have a closed cross section, and thus it is possible to withstand high loads through a large cross-sectional coefficient. And both ends of the slab open the cross section without forming the upper surface portion 13 to form a pocket portion (p) filled with the cast-in-place concrete in the hollow portion between the rib portion 12 to form a joint of the beam-slab Longitudinal continuity of the slab can be ensured.

At both ends of the upper surface portion 13, the L-shaped reinforcing bars 131 for transmitting an unbalanced load are arranged at regular intervals along the longitudinal direction. The unbalanced L-shaped reinforcing bar 131 is formed by bending a reinforcing bar bent into a U shape in an L shape. The horizontal portion 131a is embedded in the upper surface portion 13 and the vertical portion 131b is the upper surface portion 13. ) It protrudes upwards. As shown in Figure 5, the vertical portion 131b of the L-shaped rebar 131 for unbalanced load transfer is a space formed by the shear connection grooves 123 of the both side slab after mounting the PC slab according to the invention on the beam It is bent into the s. The application of PC slabs to long span, heavy load buildings can easily cause cracks between slab plates and plates, and due to load imbalance at the top of slab plates, Cases may occur frequently, but the L-shaped rebar 131 for unbalanced load transmission can smoothly transmit the upper unbalanced load and can also reduce cracks.

If significant cracks and unbalanced loads are expected between the slab plate and the plate, the rebar for transferring unbalanced loads in addition to the space s formed by the shear connection grooves 123 of the adjacent slabs, as shown in FIG. 132 can be installed. To this end, as shown in FIG. 2B, the reinforcing bar insertion groove 132a may be formed on the side surface of the rib part 12 in which the shear connection groove 123 is formed. Various reinforcing materials may be used as the reinforcing bar 132 for unbalanced load transmission, and a wire mesh may be used as an example.

As described above, according to the present invention, as shown in Figure 5, the joint between the slab plate and the plate is integrated by concrete filled in the space (s) formed by the shear connection groove 123, for unbalanced load transmission By reinforcing by the L-shaped reinforcing bar 131 and the unbalanced load transfer reinforcing bar 132, it is possible to smoothly transfer the upper unbalanced load and to reduce the cracks.

Meanwhile, the foam 14 may be filled between the rib portions 12 closed by the upper surface portion 13 so as to reduce the amount of cast concrete by increasing the overall thickness of the slab without increasing its own weight. As the foam 14, various kinds of materials that meet this purpose can be used. For example, when the foam polystyrene block is used, effects such as insulation and sound insulation can be expected.

Hereinafter, a method of constructing a bottom plate using the PC slab according to the present invention configured as described above will be described in detail.

First, as shown in FIG. 6a, the PC slab 10 according to the present invention is mounted on the beam 20 (FIG. 8a). Although the beam 20 is shown in the cross-sectional view in the drawings, the beam to which the present invention can be applied is not limited thereto, and the beam 20 may be applied to a beam known in the art, for example, an inverted T-beam.

Next, as shown in FIG. 6B, the vertical portion 131a of the L-shaped rebar 131 for shearing unbalanced load is bent into the space between the adjacent PC slabs 10. At this time, the reinforcing bars 132 for transmitting an unbalanced load may be additionally installed in the space.

Next, as shown in FIG. 6c, the overcast concrete 30 is poured on the upper surface of the PC slab 10. In this case, concrete is also filled in the pocket portion p of the PC slab 10 adjacent to each other in the longitudinal direction on the beam 20 and the space between the adjacent PC slab 10. In the pocket portion p of the PC slab 10 adjacent to each other in the longitudinal direction, both ends are positioned in the pocket portions p of the PC slabs 10 on both sides past the beam 20 for continuity of the point portion of the PC slab. The connecting reinforcing bar 151 may be arranged.

Finally, curing the overlay concrete (30).

As described in detail above, the PC slab system according to the present invention has a closed cross section with a large cross-sectional coefficient, and a shear reinforcing steel 122 that resists shear force is disposed on the rib portion 12, and between the slab plate and the plate. L-shaped reinforcing bars 131 and reinforcing bars 132 are applied to transfer unbalanced loads to reduce cracks and smoothly transfer unbalanced loads. They are applied to long span, heavy load distribution centers, and warehouse buildings without increasing dance. It is able to withstand the load, which is advantageous in the floor height and can smoothly transmit the unbalanced load acting between the plate and plate, thereby minimizing the occurrence of cracks.

In addition, the construction method is constructed in the same general process as the existing PC slab construction method, and simple processes such as L-shaped rebar 131 and rebar reinforcing bars for unbalanced load transfer are added. It is possible to construct floor spans of long spans, heavy load distribution centers, and warehouse buildings with structural stability.

So far, the present invention has been described in detail with reference to the presented embodiments, but those skilled in the art may make various modifications and modifications without departing from the technical spirit of the present invention with reference to the presented embodiments. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: PC slab 11: bottom part
111: wire mesh 112: tension material
12: rib portion 12a: outermost rib portion
122: shear reinforcing bar 123: shear connecting groove
13: Top face 131: L-shaped rebar for unbalanced load transfer
132: rebar for transferring unbalanced load 14: foam
151: Rebar 20: Beam
30: overlay concrete p: pocket part
s: space part

Claims (5)

  1. It is formed integrally using concrete, the plurality of ribs 12 protruding in the longitudinal direction at regular intervals along the width direction of the lower surface portion 11, the lower surface portion 11, and the central portion in the longitudinal direction of the slab The upper end portion 13 is formed in parallel with the lower surface portion 11 in the upper portion of the rib portion 12 so as to be a closed cross section and both ends are open sections,
    The lower surface portion 11 and the upper surface portion 13 are reinforced with reinforcing bars or wire meshes 111 all reinforced in a lattice form.
    Compression prestress is further introduced into the lower surface portion 11 through the tension member 112 disposed in the longitudinal direction in the cross section of the lower lower surface portion 11 of each rib portion 12.
    Shear connecting grooves 123 are formed on the outer surface of the rib portion 12a located at the outermost side of the rib portion 12 to secure the integrity of the joint between the slab plate and the plate. The space formed by the shear connection groove 123 is filled with concrete during pouring concrete to ensure the integrity of the joint between the slab plate and the plate,
    The rib portion 12 is reinforced with a shear reinforcing bar 122 is bent a single reinforcement so as to form a corrugated shape by the mountain and the valley in the height direction over the entire length along the longitudinal direction, the reinforcement of the shear reinforcement 122 The mountain portion 122a is installed to be exposed above the upper surface portion 13,
    On both ends of the upper surface portion 13, an unbalanced load transmission L-shaped reinforcing bar 131, which is bent into a U-shape, which is bent in a U-shape at regular intervals along the longitudinal direction, is reinforced, and an unbalanced load transmission L-shaped rebar 131 The horizontal portion 131a is buried in the upper surface portion 13 and the vertical portion 131b is installed to protrude upward from the upper surface portion 13, and the vertical portion 131b is adjacent to each other after slab mounting. Bent in the space formed by the shear connection groove 123 of the long span heavy load building, characterized in that to ensure the integrity of the joint between the slab plate and the plate together with the concrete and smoothly transfer the unbalanced load of the upper PC slab suitable for.
  2. The method according to claim 1,
    PC slab suitable for a long span heavy load building, characterized in that the reinforcing bar 132 for unbalanced load transmission is further installed in the space formed by the shear connection groove 123 of the adjacent slab.
  3. The method according to claim 1,
    PC slab suitable for long span heavy load building, characterized in that the foam 14 is filled between the rib portion 12 closed by the upper surface portion (13).
  4. (a) mounting the PC slab 10 according to claim 1 over the beam 20;
    (b) bending the vertical portion 131a of the L-shaped rebar 131 for unbalanced load shear into spaces between the adjacent PC slabs 10 mounted on the beams 20; And
    (c) Overlaid concrete 30 on the upper surface of the PC slab 10 so that concrete is filled in the space between the adjacent PC slabs 10 and the pockets of the PC slabs 10 adjacent to each other in the longitudinal direction on the beam 20. Construction method of the PC slab suitable for long span heavy load building, characterized in that it comprises the step of pouring).
  5. The method of claim 4,
    In step (b), the construction method of the PC slab suitable for long span heavy load building, characterized in that further comprising the step of installing a reinforcing steel reinforcing bar (132) for unbalanced load transmission.
KR1020120010774A 2012-02-02 2012-02-02 Precast concrete slab system for building which have long span and require high design load and construction method using this system KR101152270B1 (en)

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KR101220678B1 (en) 2012-05-02 2013-01-10 서울시립대학교 산학협력단 Rib optimized slab
KR101506620B1 (en) 2013-05-08 2015-03-27 주식회사 네비엔 Precast concrete slab and Precast concrete slab assembly
CN104631674A (en) * 2015-01-29 2015-05-20 济南轨道交通集团有限公司 Composite floor slab and construction method thereof
KR101588161B1 (en) * 2015-01-21 2016-01-25 아이에스동서 주식회사 Ribbed Precast Concrete Slab and Connection Method Using The Same
KR101614722B1 (en) * 2015-10-20 2016-04-22 장정화 The flat and Ribbed slab
KR101621188B1 (en) * 2015-01-21 2016-05-13 아이에스동서 주식회사 Headed Rib Precast Concrete Slab and Connection Method Using The Same
KR101701416B1 (en) * 2016-07-14 2017-02-01 (주)에스앤씨산업 Precast Concrete Deck for Long-Span Slab and the Slab using it
KR101707942B1 (en) * 2016-07-04 2017-02-27 삼표피앤씨 주식회사 Precast concrete hollow core slab and manufacturing method of the same
KR101721603B1 (en) * 2016-05-24 2017-03-30 주식회사 신원알피씨 Deck for concrete slab construction
KR101745092B1 (en) * 2015-05-29 2017-06-09 동진산업 주식회사 Headed Rib Precast Concrete Slab Using Deck Plate
KR20170114913A (en) * 2016-04-06 2017-10-16 (주)연우피씨엔지니어링 Hybrid inverted rib slab structure
KR101847544B1 (en) * 2016-10-07 2018-04-10 이진희 Precast concrete slab having shear reinforcement function
KR102170635B1 (en) * 2019-04-18 2020-10-28 유재천 Libbed half PC slab

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KR20090050520A (en) * 2007-11-16 2009-05-20 (주)콘솔베르 Libbed half pc slab and manufacturing method of the same
KR20100012404A (en) * 2008-07-28 2010-02-08 (주)콘솔베르 Half pc slab having closed lib
KR20100013548A (en) * 2008-07-31 2010-02-10 강인석 Joint of half pc slab

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KR20090050520A (en) * 2007-11-16 2009-05-20 (주)콘솔베르 Libbed half pc slab and manufacturing method of the same
KR20100012404A (en) * 2008-07-28 2010-02-08 (주)콘솔베르 Half pc slab having closed lib
KR20100013548A (en) * 2008-07-31 2010-02-10 강인석 Joint of half pc slab

Cited By (14)

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KR101220678B1 (en) 2012-05-02 2013-01-10 서울시립대학교 산학협력단 Rib optimized slab
KR101506620B1 (en) 2013-05-08 2015-03-27 주식회사 네비엔 Precast concrete slab and Precast concrete slab assembly
KR101588161B1 (en) * 2015-01-21 2016-01-25 아이에스동서 주식회사 Ribbed Precast Concrete Slab and Connection Method Using The Same
KR101621188B1 (en) * 2015-01-21 2016-05-13 아이에스동서 주식회사 Headed Rib Precast Concrete Slab and Connection Method Using The Same
CN104631674A (en) * 2015-01-29 2015-05-20 济南轨道交通集团有限公司 Composite floor slab and construction method thereof
KR101745092B1 (en) * 2015-05-29 2017-06-09 동진산업 주식회사 Headed Rib Precast Concrete Slab Using Deck Plate
KR101614722B1 (en) * 2015-10-20 2016-04-22 장정화 The flat and Ribbed slab
KR20170114913A (en) * 2016-04-06 2017-10-16 (주)연우피씨엔지니어링 Hybrid inverted rib slab structure
KR101963315B1 (en) * 2016-04-06 2019-07-31 (주)연우피씨엔지니어링 Hybrid inverted rib slab structure
KR101721603B1 (en) * 2016-05-24 2017-03-30 주식회사 신원알피씨 Deck for concrete slab construction
KR101707942B1 (en) * 2016-07-04 2017-02-27 삼표피앤씨 주식회사 Precast concrete hollow core slab and manufacturing method of the same
KR101701416B1 (en) * 2016-07-14 2017-02-01 (주)에스앤씨산업 Precast Concrete Deck for Long-Span Slab and the Slab using it
KR101847544B1 (en) * 2016-10-07 2018-04-10 이진희 Precast concrete slab having shear reinforcement function
KR102170635B1 (en) * 2019-04-18 2020-10-28 유재천 Libbed half PC slab

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