WO2011077822A1 - ハーフプレキャスト床版及びそれを用いたスラブ構築方法 - Google Patents
ハーフプレキャスト床版及びそれを用いたスラブ構築方法 Download PDFInfo
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- WO2011077822A1 WO2011077822A1 PCT/JP2010/068632 JP2010068632W WO2011077822A1 WO 2011077822 A1 WO2011077822 A1 WO 2011077822A1 JP 2010068632 W JP2010068632 W JP 2010068632W WO 2011077822 A1 WO2011077822 A1 WO 2011077822A1
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- floor
- side plates
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- members
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor 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
- E04B5/40—Floor 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 with metal form-slabs
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor 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
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
Definitions
- the present invention relates to a half precast slab mainly applied to a turbine mount of a power plant and other parts having a large slab thickness, and a slab construction method using the same.
- precast construction methods are widely used to construct reinforced concrete structures by bringing factory-made reinforced concrete members to the site, installing them in place, and joining adjacent parts together. It has been adopted.
- the precast method is broadly divided into so-called full precast, which precasts the entire member, and half precast, which corresponds to part of the member precast and the rest of the concrete is placed on site.
- full precast which precasts the entire member
- half precast which corresponds to part of the member precast and the rest of the concrete is placed on site.
- the half precast method When the half precast method is applied to the floor, if it is on-site concrete, the part corresponding to the bottom formwork is prefabricated as a precast floor slab, and this is transported to the site and bridged to the beam. After placing the bars, it is common to cast concrete on a precast floor slab to integrate them into a composite floor slab.
- This half precast method eliminates the need for a bottom formwork for building slabs, and allows you to enjoy the original benefits of precasting, and also facilitates handling when transporting and assembling due to weight reduction. Become.
- a turbine gantry when a gantry for installing a turbine (hereinafter simply referred to as a turbine gantry) is constructed of reinforced concrete, in order to sufficiently withstand the weight and vibration, it is necessary to make the slab a high strength and high rigidity,
- the thickness is 1 m or more, and a large diameter reinforcing bar such as D32 is used as the main reinforcing bar.
- the present invention has been made in consideration of the above-described circumstances, and an object thereof is to provide a half precast floor slab capable of being half precast even for a slab having a large thickness, and a slab construction method using the same. .
- a half precast floor slab according to the present invention is a floor formwork comprising a long bottom plate and a pair of side plates erected on a longitudinal edge of the bottom plate as described in claim 1.
- the members are continuously arranged along the direction orthogonal to the material axes and parallel to each other, and among the floor mold members that are continuously provided, the side plate and the other of the floor mold members adjacent to each other
- Each floor form frame member is connected along a direction perpendicular to the material axis so that the side plate of the floor form frame member comes into contact, and among the side plates, the side plate excluding the outermost side plate
- the height is adjusted so that the inner space of each floor form member surrounded by the bottom plate and the pair of side plates standing upright communicates with each other to form a single reinforcing bar arrangement region. It is set lower than the height of the outer side plate.
- the slab construction method using the half precast floor slab according to the present invention is a floor type comprising a long bottom plate and a pair of side plates erected on a longitudinal edge of the bottom plate as described in claim 2.
- the frame members are continuously arranged along the direction orthogonal to the material axes and parallel to each other, and among the floor mold members that are arranged in series, the side plate and the other of the floor mold frame members adjacent to each other
- Each floor form frame member is connected along a direction perpendicular to the material axis so that the side plate of the floor form member comes into contact, and simultaneously with or before or after the connecting step,
- Reinforcing bars are arranged in a single reinforcing bar arrangement region in which the internal space of each floor form member surrounded by the pair of standing side plates communicates with each other, and concrete is placed in the single reinforcing bar arrangement region
- the concrete and the reinforcing bar Serial is to build a composite slab consisting of the bed frame members.
- the PC steel wire is attached to each floor form frame member along a direction perpendicular to the material axis of each floor form frame member.
- the floor mold members are connected to each other by penetrating them, introducing tension to the PC steel wires, and fixing the ends thereof with a fixing material.
- the slab construction method using the half precast slab according to the present invention is to penetrate the PC steel wire in the cross section of the bottom plate.
- the slab construction method using the half precast slab according to the present invention is to remove the fixing material or remove the fixing material and the PC steel wire after the strength of the cast concrete is expressed. .
- each of the floor formwork members is fastened by penetrating bolts to the side plates that contact each other among the side plates. They are connected to each other.
- the beam formwork applied when constructing beams for general buildings is connected in the direction perpendicular to the material axis and connected to form a slab.
- beam formwork must be firmly connected to each other, which requires a considerable amount of reinforcing material. Integration at a level that satisfies high rigidity and high strength like a turbine mount is economical. Lack of sex.
- a plurality of floor form frame members comprising a long bottom plate and a pair of side plates erected on the longitudinal edge of the bottom plate are connected to each other.
- the height of the side plate excluding the outermost side plate among the side plates of the floor mold member is set lower than the height of the outermost side plate.
- the space above the bottom plate for each floor form member is not in an independent state but is in a state of communicating with each other to form one space region.
- the inner surface of the outermost side plate is defined as a side boundary
- the virtual line connecting the top ends of the outermost side plates is defined as an upper boundary
- the upper surface of the bottom plate of each floor form member is generally defined as a lower boundary.
- a spatial region is formed.
- the synthetic slab can be integrated by the reinforcing bar, and the total required reinforcing bar amount can be constructed only by on-site placement. It will be roughly equal to the amount of reinforcing bars that will be required.
- the integration required as a slab is possible with the reinforcing bars arranged in a single reinforcing bar arrangement area, so that the floor formwork members are integrated so that they can only withstand the load when placing concrete. If it becomes, it is enough.
- the half precast slab and the slab construction method using the same according to the present invention can be widely applied to a slab having a large thickness, particularly a slab requiring high rigidity and high strength. It can be widely used not only for power plants and other special buildings, but also for office buildings, factories and other general buildings.
- the floor mold member has a J-shaped cross section in which a high side plate and a low side plate are erected on the long edge of the bottom plate, and a U-shaped cross section in which the low side plate is erected on the long edge of the bottom plate.
- the J-shaped cross-section type floor form frame member is arranged on the outermost side, and the U-shaped cross-section type is placed between them.
- a floor formwork member is arranged.
- the J-shaped cross section is such that the high side plate is on the outside
- the floor type frame members of the type are symmetrically arranged opposite to each other, the number of member of the floor type frame member of U-shaped cross-section type is 1, and the number of members of the floor type frame member of J-shaped cross-section type is 2
- the number of members of the U-shaped cross-section type floor form member may be appropriately increased according to the size of the slab.
- the floor form frame member has a prestressed structure in which tension is introduced into a PC steel wire embedded in the bottom plate along the material axis direction, thereby increasing the bending rigidity around the direction perpendicular to the material axis.
- the side plate erected on the bottom plate also contributes to the improvement of the bending stiffness around the direction perpendicular to the material axis as a stiffening rib.
- the method of connecting the floor form members in the direction perpendicular to the material axis is arbitrary, and a PC steel wire or a PC steel rod can be used as appropriate.
- the PC steel wire is connected to each floor.
- Each floor formwork is disposed by penetrating each floor formwork member along a direction perpendicular to the material axis of the formwork member, introducing tension to the PC steel wire and fixing the ends thereof with a fixing material.
- a method of connecting the members to each other or a method of connecting the floor frame members to each other by passing the bolts through the side plates contacting each other and fastening them can be considered.
- the PC steel wire and the fixing material are temporary materials for integrating the floor formwork members so as to withstand the concrete load at the time of placing the concrete, after the concrete strength is expressed, only the fixing material is used.
- the PC steel wire may be removed together with the fixing material. Incidentally, if the fixing material is removed, the fixing material can be prevented from being exposed from the side of the slab.
- the top view of half precast floor slab 1 similarly.
- the bottom plate upper spaces 31 and 32 of the floor frame members 2 and 3 communicate with each other in the horizontal direction, and as a result, a single reinforcing bar arrangement region 33 is formed.
- FIG. 1 is an overall perspective view showing a half precast slab according to the present embodiment
- FIG. 2 is a plan view of the same.
- the half precast floor slab 1 according to the present embodiment is configured by using a floor form frame member 2 and a floor form frame member 3, and the floor form frame member 2 has a long shape.
- the floor plate member 3 is composed of a bottom plate 4 and a pair of side plates 5 and 5 erected on the longitudinal edge of the bottom plate.
- the floor frame member 3 is also a long bottom plate 6 and a longitudinal edge of the bottom plate, like the floor frame member 2.
- the side plate 5 and the side plate 7 have their height set lower than that of the side plate 8, and the floor form frame member 2 has a U-shaped cross section as a whole.
- the floor mold member 3 has a J-shaped cross section as a whole.
- the half precast floor slab 1 has two floor mold members 2, 2 connected in a direction perpendicular to the material axis and parallel to each other so that their side plates 5, 5 are in contact with each other.
- the floor mold frame members 3 are connected in series so as to be parallel to each other in the direction perpendicular to the material axis of the floor mold frame member 2 so that the side plate 7 contacts the side plate 5 located on the opposite side of the frame member, These are connected to each other by fastening with a PC steel wire 9 along the direction perpendicular to the material axis.
- the heights H1 of the side plates excluding the outermost side plate 8, that is, the side plate 5 and the side plate 7, are shown in FIG.
- the bottom plate upper spaces 32, 32 are set lower than the height H2 of the outermost side plate 8 so that a single reinforcing bar arrangement region 33 is formed by communicating with each other in the horizontal direction.
- the floor mold members 2 and 3 are set to have a width of 3,500 mm, a length in the material axis direction of 10,000 mm, and a thickness of 200 mm, and the height H2 of the side plate 8 is 1,500 mm, the side plate 5 and the side plate 7.
- the height H1 is set to about 200 mm to 300 mm, for example.
- the synthetic slab constructed using the half precast floor slab 1 composed of such floor mold members 2 and 3 has a thickness of 1,500 mm.
- the two floor mold members 2, 2 and the two floor mold members 3, 3 are orthogonal to their material axes. Are connected to the existing beams, columns or walls 21 and 21 so as to be parallel to each other as described above (see FIG. 2).
- each floor frame member 2 and 3 are fastened with a PC steel wire 9 along a direction perpendicular to their material axes.
- a sealing material (not shown) is arranged between the side plate 7 of the floor mold member 3 and the side plate 5 of the floor mold member 2, and the sealing material is Preferably, the side plates 5 and 7 are brought into contact with each other.
- a sealing material (not shown) between the side plates 5 and 5 of the floor form members 2 and 2 so that the side plates 5 and 5 are brought into contact with each other through the sealing material.
- the bottom plate upper space 31 of the floor mold member 3 and the bottom plate upper space 32 of the floor mold member 2 are not in an independent state but communicated with each other as described in FIG.
- the bottom plate 6 and the floor frame of the floor frame member 3 are in a state where the inner surfaces of the outermost side plates 8 and 8 are defined as side boundaries and the virtual line 34 connecting the top ends of the outermost side plates 8 is defined as an upper boundary. Since a space area having the upper surface of the bottom plate 4 of the member 2 as a generally lower boundary is formed as the reinforcing bar arrangement area 33, the reinforcing bars are arranged in the reinforcing bar arrangement area 33.
- FIG. 4 shows a state in which the reinforcing bar 41 is arranged in the reinforcing bar arrangement region 33.
- the reinforcing bar 41 includes an upper reinforcing bar 42, a lower reinforcing bar 43, and a shear reinforcing bar 44, but the reinforcing bar arrangement region 33 includes the space above the bottom plate 31 of the floor frame member 3 and the floor frame member 2. Since it is an integrated space composed of the bottom plate upper space 32, the bars can be freely arranged without interfering with the floor frame members 2 and 3 from the left end to the right end of the figure.
- the reinforcing bars extending in the horizontal direction in the figure that is, the reinforcing bars extending in the direction perpendicular to the material axes of the floor form frame members 2 and 3, become important reinforcing bars for integration as a composite slab.
- the lower end bars 43 can be arranged in the horizontal direction as well as 42 and can contribute to the integration of the composite slab.
- the side plates 5 and 7 when determining the height H1 of the side plates 5 and 7, in addition to making it lower than the side plate 8, among the reinforcing bars embedded in the slab, the side plates 5 and 7 extend in the direction perpendicular to the material axis of the floor frame members 2 and 3.
- One guideline is to set it below the installation height of the bottom bar.
- reinforcing bars that greatly contribute to slab integration can be reliably arranged along the direction perpendicular to the material axes of the floor mold members 2 and 3.
- the fixing material 22 is removed after the strength of the cast concrete is developed. Further, when the PC steel wire 9 is inserted through a sheath tube (not shown) arranged in advance on the floor mold members 2 and 3, the PC steel wire 9 is also pulled out of the sheath tube and removed.
- the height of the side plate 5 and the side plate 7 excluding the outermost side plate 8 is set to the height of the outermost side plate 8. Since the height is set to be lower than the height, the bottom plate upper spaces 31 and 32 for each of the floor frame members 2 and 3 are not in an independent state but are in a state of communicating with each other in the horizontal direction to form one space region.
- the reinforcing bars as such a single reinforcing bar arrangement region 33, it is possible to reliably integrate the synthetic slab, and thus even a thick slab is required for the slab. Precasting can be achieved without reducing the strength and rigidity.
- the fixing material 22 is removed to prevent the protrusion from the floor form member 3, but if it is not necessary, the fixing material 22 may be left as it is.
- the choice of removing or leaving the line 9 is also arbitrary.
- the PC steel wire 9 is disposed so as to pass above the bottom plates 4 and 6, but instead of this, as shown in FIG. 5, the insertion formed in the cross section of the bottom plates 4 and 6 The PC steel wire 9 may be inserted into the hole 51.
- the floor form frame members 2 and 3 are fastened with the PC steel wire 9, but the configuration in which the continuous floor form frame members are connected along the direction perpendicular to the material axis is arbitrary.
- a bolt 62 is passed through a bolt hole 61 formed in the side plates 7 and 5 or the side plates 5 and 5 that are in contact with each other, and a nut 63 is screwed to the tip of the bolt.
- the floor mold members 2 and 3 may be connected to each other by being fastened together. Note that the pitch and number of bolts may be appropriately determined in consideration of the strength required for concrete placement.
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Description
Claims (6)
- 長尺状の底板及び該底板の長手縁部に立設された一対の側板からなる床型枠部材をそれらの材軸に直交する方向に沿ってかつ互いに平行になるように連設するとともに、連設された床型枠部材のうち、互いに隣り合う一方の床型枠部材の側板と他方の床型枠部材の側板とが当接されるように前記各床型枠部材をそれらの材軸に直交する方向に沿って連結してなり、前記側板のうち、最外縁の側板を除く側板の高さを、前記底板及びそれに立設された前記一対の側板で囲まれた前記各床型枠部材ごとの内部空間が互いに連通して単一の鉄筋配置領域が形成されるように、前記最外縁の側板の高さより低く設定したことを特徴とするハーフプレキャスト床版。
- 長尺状の底板及び該底板の長手縁部に立設された一対の側板からなる床型枠部材をそれらの材軸に直交する方向に沿ってかつ互いに平行になるように連設し、
連設された床型枠部材のうち、互いに隣り合う一方の床型枠部材の側板と他方の床型枠部材の側板とが当接されるように前記各床型枠部材をそれらの材軸に直交する方向に沿って連結し、
該連結工程と同時に又は相前後して、前記底板及びそれに立設された前記一対の側板で囲まれた前記各床型枠部材ごとの内部空間が互いに連通してなる単一の鉄筋配置領域に鉄筋を配置し、
前記単一の鉄筋配置領域にコンクリートを打設することにより、該打設コンクリートと前記鉄筋と前記各床型枠部材とからなる合成スラブを構築することを特徴とするハーフプレキャスト床版を用いたスラブ構築方法。 - 前記連結工程において、PC鋼線を前記各床型枠部材の材軸に直交する方向に沿って該各床型枠部材に貫通配置し、前記PC鋼線に緊張力を導入しそれらの端部を定着材で定着することによって前記各床型枠部材を相互に連結する請求項2記載のハーフプレキャスト床版を用いたスラブ構築方法。
- 前記PC鋼線を前記底板の断面内で貫通させる請求項3記載のハーフプレキャスト床版を用いたスラブ構築方法。
- 前記打設コンクリートの強度が発現した後、前記定着材を撤去し又は前記定着材及び前記PC鋼線を撤去する請求項3又は請求項4記載のハーフプレキャスト床版を用いたスラブ構築方法。
- 前記連結工程において、前記側板のうち、互いに当接する側板にボルトを貫通させて締結することにより、前記各床型枠部材を相互に連結する請求項2記載のハーフプレキャスト床版を用いたスラブ構築方法。
Priority Applications (5)
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MX2011012554A MX2011012554A (es) | 2009-12-22 | 2010-10-21 | Media losa premoldeada y metodo para estructurar media losa premoldeada. |
KR1020117027235A KR101408545B1 (ko) | 2009-12-22 | 2010-10-21 | 하프 프리캐스트 플로어판 및 그것을 사용한 슬래브 구축 방법 |
CN201080023757.2A CN102449247B (zh) | 2009-12-22 | 2010-10-21 | 半预制楼板及使用该半预制楼板的板材的构筑方法 |
SG2011080850A SG175868A1 (en) | 2009-12-22 | 2010-10-21 | Half precast slab and method for structuring half precast slab |
EP10839059.2A EP2518231A4 (en) | 2009-12-22 | 2010-10-21 | PRE-CASTING HALF FLOOR BOARD AND SLAB CONSTRUCTION METHOD USING THE SAME |
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JP2009290561A JP5442421B2 (ja) | 2009-12-22 | 2009-12-22 | ハーフプレキャスト床版及びそれを用いたスラブ構築方法 |
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CN110039639A (zh) * | 2019-05-28 | 2019-07-23 | 山东省交通科学研究院 | 自密实混凝土带肋预应力叠合板的生产方法及模具 |
CN111926997B (zh) * | 2020-10-16 | 2021-03-02 | 湖南大学 | 一种预应力组合建筑构件及其预应力复合楼板 |
CN113123505A (zh) * | 2021-05-14 | 2021-07-16 | 重庆中科建筑科技(集团)有限公司 | 一种预埋挂钩的附加刚度叠合楼板 |
CN115627846B (zh) * | 2022-11-08 | 2023-07-14 | 中交一公局集团有限公司 | 一种装配式叠合板的施工方法及后浇带结构 |
CN115653317A (zh) * | 2022-12-02 | 2023-01-31 | 中国三冶集团有限公司 | 一种缓粘结预应力钢筋先装方法 |
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JP7405381B1 (ja) | 2022-06-27 | 2023-12-26 | 森田建設株式会社 | スラブ型枠パネル |
JP2024003419A (ja) * | 2022-06-27 | 2024-01-15 | 森田建設株式会社 | スラブ型枠パネル |
Also Published As
Publication number | Publication date |
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TWI438326B (zh) | 2014-05-21 |
SG175868A1 (en) | 2011-12-29 |
US8671641B2 (en) | 2014-03-18 |
TW201135026A (en) | 2011-10-16 |
MY153498A (en) | 2015-02-27 |
MX2011012554A (es) | 2011-12-14 |
CN102449247A (zh) | 2012-05-09 |
US8375676B2 (en) | 2013-02-19 |
US20130160392A1 (en) | 2013-06-27 |
JP5442421B2 (ja) | 2014-03-12 |
CN102449247B (zh) | 2014-05-21 |
US20110146190A1 (en) | 2011-06-23 |
EP2518231A4 (en) | 2016-07-20 |
KR20120011043A (ko) | 2012-02-06 |
EP2518231A1 (en) | 2012-10-31 |
KR101408545B1 (ko) | 2014-06-17 |
JP2011132681A (ja) | 2011-07-07 |
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