JP3938036B2 - Flat slab structure - Google Patents

Flat slab structure Download PDF

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Publication number
JP3938036B2
JP3938036B2 JP2002366131A JP2002366131A JP3938036B2 JP 3938036 B2 JP3938036 B2 JP 3938036B2 JP 2002366131 A JP2002366131 A JP 2002366131A JP 2002366131 A JP2002366131 A JP 2002366131A JP 3938036 B2 JP3938036 B2 JP 3938036B2
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JP
Japan
Prior art keywords
steel
steel beam
flat slab
slab structure
formwork
Prior art date
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JP2002366131A
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Japanese (ja)
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JP2004197389A (en
Inventor
晃司 沖
久哉 加村
和近 今野
茂樹 伊藤
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JFE Engineering Corp
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JFE Engineering Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、倉庫やビルなどに用いるフラットスラブ構造に関し、特に、鋼管柱と床(スラブ)の接合が容易で、且つ耐火性能に優れたものに関する。
【0002】
【従来の技術】
フラットスラブ構造は、梁−床間のデッドスペースや床(スラブ)下面に突出する梁型を除くために用いられ、柱に結合するコンクリート床に梁の機能をもたせることを特徴とする。
【0003】
床区画が複数となる場合は、隣接する床区画あるいは部材に対し横断的に配置した鉄筋に床コンクリートを打設し構造的に一体として構築する。これにより隣接する床同士が連続梁として機能し、床の負担モーメントが軽減するため、たわみ量が低減し、床の厚みを薄くすることも可能である。
【0004】
図7は複数のスラブ区画が構造的に一体化されたフラットスラブのモーメント分布を示す。正曲げ領域ではスラブ上面に圧縮力、下面に引張力が生じ、負曲げ領域では正曲げと逆方向の応力が生じる。
【0005】
RC造では、原則的に鉄筋が引張力を負担するため、構造的に一体化されたスラブを構築するためにはスラブに発生する応力に応じ適切に鉄筋を配筋することが必要である。
【0006】
フラットスラブ構造に関しては、図8に示すようにフラットスラブ201の床のせん断力を安定的に柱へ伝達させるため柱頭部にキャピタル202を設けた構造や、施工性の向上に関して提案がなされている。
【0007】
特許文献1は、床と接合する柱の柱頭部に漏斗状鋼板を設けるもので、漏斗状鋼板はその表面が折り板状のため中心部ほど凹凸が深く、キャピトル部の応力状態に即応して補強が可能となることが記載されている。
【0008】
特許文献2は、フラットスラブ構造物における鋼管柱とスラブの接合構造に関し、スラブのパンチング破壊を防止するため、図9に示すようにせん断応力を支持する補強鉄板204を鋼管柱203に設け、該補強鉄板にはコンクリートと強固に付着するように鉄筋205を上下端に設けることが記載されている。
【0009】
特許文献3は、柱を充填型鋼管柱203とした場合の施工性に優れたフラットスラブの構造に関し、図10に示すように隣接する柱間に設けた鉄骨梁206で、床コンクリート207の打設で必要となる型枠デッキ208を支持させ、スラブを形成することにより、スラブからの応力を鉄骨梁を介して柱に伝達し、キャピタルを不要とすることが記載されている。
【0010】
【特許文献1】
特開平5−18031号公報
【0011】
【特許文献2】
特開平6−88392号公報
【0012】
【特許文献3】
特開2000−297493号公報
【0013】
【発明が解決しようとする課題】
しかしながら、特許文献2に記載の構造では、鋼管柱に補強鋼板を挿通させるための加工が必要で、補強鋼板自体にも鉄筋を挿入し、且つ鋼管柱内で直交させるための加工が必要となるなど施工性の低下が避けられない。
【0014】
また、特許文献3記載のフラットスラブ構造は、一方向スラブに適したスラブ構造で、隣接する床区画を一体的に施工しようとすると鉄骨梁と直交する上端筋、下端筋などの配筋が容易でなく、また型枠を鉄骨梁で支持させるため、鉄骨梁の下面をコンクリートで覆うことができず天井面に露出し、火災が生じた場合、鉄骨梁の強度が低下する。
【0015】
そこで本発明では、複数区画のスラブが容易な施工で構造的に一体化され、且つ耐火性に優れたフラットスラブ構造を提供することを目的とする。
【0016】
【課題を解決するための手段】
本発明の課題は以下の手段により達成される。
【0017】
1.隣接する鋼管柱に掛け渡した鉄骨梁を有するフラットスラブ構造であって、前記鉄骨梁の下方で型枠が型枠受け板により支持され、前記型枠受け板が締結部材で前記鉄骨梁に固着され、前記鉄骨梁は床コンクリート中に埋設するように配置されていることを特徴とするフラットスラブ構造。
【0018】
2.前記型枠受け板はスペーサを介して前記鉄骨梁と結合されることを特徴とする1記載のフラットスラブ構造。
【0019】
3.前記型枠受け板は前記鉄骨梁とボルト締結されることを特徴とする1記載のフラットスラブ構造。
【0020】
4.鋼管柱と交差しないように上端筋、下端筋が配筋され、前記上端筋は鉄骨梁の上方に、前記下端筋の少なくとも鉄骨梁直交方向の下端筋が鉄骨梁の下方に配筋されていることを特徴とする1ないし3のいずれか一つに記載のフラットスラブ構造。
【0021】
5.隣接する鋼管柱に掛け渡した鉄骨梁を有するフラットスラブ構造であって、前記鉄骨梁はラチス梁で、型枠は前記ラチス梁の下フランジ下面と接して設けられた型枠受け板で支持されることを特徴とするフラットスラブ構造。
【0022】
6.前記ラチス梁の上下フランジ間に梁直行方向鉄筋が挿通していることを特徴とする5記載のフラットスラブ構造。
【0023】
【発明の実施の形態】
以下、本発明に係るフラットスラブ構造を図面を用いて詳細に説明する。図1は本発明の一実施形態に係るフラットスラブ構造を示す図で、鋼管柱1に掛け渡される鉄骨梁2の下方で型枠10が型枠受け板3により支持され、型枠受け板3はボルト5とナット6で鉄骨梁2に固着される。
【0024】
床コンクリート7中には、鉄筋が配筋され、鉄骨梁2と直交する梁直行方向上端筋8bは鉄骨梁2の上方に、梁直行方向下端筋9bは鉄骨梁2の下方で型枠受け板3の上方に配筋する。
【0025】
本発明によれば、鉄骨梁2の下方で型枠10を支持するため、鉄骨梁2は床コンクリート7中に埋没し、火災時に直接火炎に曝されず、耐火性能が向上する。型枠受け板3やボルト5を耐火鋼とすると鉄骨梁2の耐火性能がより向上する。
【0026】
また、梁直交方向の上端筋8b、梁直交方向の下端筋9bがスラブ内で鉄骨梁2を跨いで異なるスラブ区画に配筋されるため、スラブ区画が多区画であっても構造的一体性が向上し負担モーメントが軽減し、たわみ量も低減され、スラブ厚を薄くすることが可能である。
【0027】
鉄骨梁2によってスラブの荷重が鋼管柱1に伝達されるため、鉄骨梁2と平行に配筋される上端筋8a,下端筋9aは、鋼管柱1に挿通しないように配筋することが可能で優れた施工性が得られる。
【0028】
図2は、本発明の他の実施形態に係るフラットスラブ構造を示すもので、(a)は鉄骨梁断面方向、(b)は鉄骨梁平行方向を示し、鋼管柱1に掛け渡される鉄骨梁2の下方に受け板11がスペーサ4を挟んで取付けられ、スペーサ4は複数個がその間を梁直交方向下端筋9bが挿通するように鉄骨梁2の長手方向に配置される。
【0029】
床コンクリート7中で鉄骨梁2の上方に上端筋8a,梁直交方向上端筋8bが配筋され、鉄骨梁2の下方に梁直交方向下端筋9bが配筋される。
【0030】
図3、4は請求項1記載の発明の他の実施形態に係るフラットスラブ構造を示し、図3はコンクリートを打設する際の固定荷重を支持するためトラス付き型枠を用いた例、図4は型枠を仮設梁で支持した例を示す。
【0031】
図3において、トラス付き型枠18は鉄筋トラス181a,181b,181c、型枠182を備え、鋼管柱1に掛け渡される鉄骨梁2の下方で受け板11aにより支持され、受け板11aは締結部材19で鉄骨梁2に固着される。
【0032】
上端筋8a,梁直交方向上端筋8bは鉄骨梁2の上方に配筋され、下端筋9aは鉄筋トラス181a,181cに交差して配筋する。本実施例によれば型枠182を支保工(型枠用仮設材)で支持せずにコンクリートの打設が可能である。
【0033】
図4において、型枠10はトラス状の仮設梁21によって支持され、仮設梁21は鉄骨梁下方の受け板11によって吊られる。上端筋8a,梁直交方向上端筋8bは鉄骨梁の上方に、下端筋9a,梁緒交方向下端筋9bは鉄骨梁の下方に配筋する。本実施例によれば、型枠10を支保工で支持せずにコンクリートの打設が可能である。
【0034】
図5は請求項5記載の発明に係るフラットスラブ構造の一実施形態を示し、図5(a)は梁断面方向、図3(b)は梁側面方向における構造を示す。
【0035】
本発明において鋼管柱1に掛け渡される鉄骨梁はラチス梁24で、上フランジ14,下フランジ15,斜材または束材16を備え、型枠デッキ17は受け板11cで支持され、受け板11cは下フランジ15に取付けられる。型枠デッキ17にかわり、型枠を用いることも可能である。
【0036】
鉄骨梁がラチス梁のため、梁直交方向の鉄筋12は斜材または束材16の空隙部を挿通させることが可能で、ラチス梁によってスラブが複数区画に分断される場合であっても、容易に構造的に一体化されたスラブを構築することができる。
【0037】
また、ラチス梁の場合、下フランジ15から上フランジ14へ熱が伝わりにくく、受け板11cが火災などで高温に曝されても上フランジ15の耐火性能の低下は少ない。ラチス梁や受け板を耐火鋼で製造するとより耐火性能が向上して望ましい。
【0038】
図6は本発明に係るフラットスラブ構造を床(スラブ)23に用いた構造物の構造架構を示すもので、床(スラブ)23と鋼管柱1なる架構に水平抵抗要素としてブレース22を配置する。床(スラブ)23は鉄骨梁2を有するため、構造架構は全て鉄骨部材となり、床スラブに打設されるコンクリートの硬化を待たず、鉄骨架構の先行組上げが可能で工期が短縮される。鋼管柱がCFT柱の場合であってもコンクリートの硬化を待たず架構の自立が可能となる。
【0039】
尚、以上の説明において、鋼管柱1は円形または角型鋼管や内部にコンクリートが充填された充填型コンクリート柱(CFT柱)であれば良く本発明では特に限定しない。
【0040】
【発明の効果】
本発明によれば、鉄骨梁を横断して上端筋、下端筋の配筋が可能で、床区画の構造的一体化が向上し、スパンを大きくしたり、スラブ厚を薄くすることが可能である。
【0041】
また、鉄骨梁が床コンクリート中に埋設されるため耐火性に優れたフラットスラブ構造が得られる。
【0042】
更に構造架構が全て鉄骨部材となり、床(スラブ)に打設されたコンクリートの硬化を待たず鉄骨架構の先行組上げが可能で産業上極めて有用である。
【図面の簡単な説明】
【図1】本発明の一実施形態に係るフラットスラブ構造のスラブ断面を示す図。
【図2】本発明の他の実施形態に係るフラットスラブ構造を示す図で、(a)は鉄骨梁断面方向、(b)は鉄骨梁側面方向からの図。
【図3】本発明の他の実施形態に係るフラットスラブ構造のスラブ断面を示す図。
【図4】本発明の他の実施形態に係るフラットスラブ構造のスラブ断面を示す図。
【図5】本発明の他の実施形態に係るフラットスラブ構造を示す図で(a)はラチス梁断面方向、(b)はラチス梁側面方向からの図。
【図6】本発明に係るフラットスラブ構造を用いた構造物の例を示す図。
【図7】多区画スラブ構造におけるモーメント分布を示す図。
【図8】キャピタルを用いた鉄筋コンクリート造の従来例を示す図。
【図9】補強鉄板を用いた従来例を示す図。
【図10】鉄骨梁を用いた従来例を示す図。
【符号の説明】
1 鋼管柱
2 鉄骨梁
2a 鉄骨大梁
2b 鉄骨小梁
3 型枠受け板
4 スペーサ
5 ボルト
6 ナット
7 床コンクリート
8a 上端筋
8b 梁直交方向上端筋
9a 下端筋
9b 梁直交方向下端筋
10 型枠
11、11a,11b,11c 受け板
12 梁直交方向鉄筋
13 梁平行方向鉄筋
14 上フランジ
15 下フランジ
16 斜め材または束材
17 型枠デッキ
18 トラスつき型枠
181a,181b,181c 鉄筋トラス、182 型枠
19 締結部材
20 仮設梁受け
21 仮設梁
22 ブレース
23 床(スラブ)
24 ラチス梁
201 フラットスラブ
202 キャピタル
203 鋼管柱
204 補強鉄板
205 鉄筋
206 鉄骨梁
207 床コンクリート
208 型枠デッキ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a flat slab structure used for a warehouse, a building, and the like, and particularly relates to a structure that can easily join a steel pipe column and a floor (slab) and has excellent fire resistance.
[0002]
[Prior art]
The flat slab structure is used for removing a dead space between a beam and a floor and a beam type protruding on a lower surface of a floor (slab), and has a feature that a concrete floor coupled to a column has a beam function.
[0003]
When there are a plurality of floor sections, floor concrete is placed on the reinforcing bars arranged transversely to the adjacent floor sections or members, and is constructed as a structurally integrated structure. As a result, the adjacent floors function as continuous beams and the load moment of the floor is reduced, so that the amount of deflection can be reduced and the thickness of the floor can be reduced.
[0004]
FIG. 7 shows the moment distribution of a flat slab in which a plurality of slab sections are structurally integrated. In the positive bending region, a compressive force is generated on the upper surface of the slab and a tensile force is generated on the lower surface, and in the negative bending region, a stress in the direction opposite to the normal bending is generated.
[0005]
In RC construction, in principle, the reinforcing bars bear the tensile force, so in order to construct a structurally integrated slab, it is necessary to appropriately arrange the reinforcing bars according to the stress generated in the slab.
[0006]
As for the flat slab structure, as shown in FIG. 8, in order to stably transmit the shearing force of the floor of the flat slab 201 to the column, proposals have been made regarding a structure in which the capital 202 is provided on the column head and improvement in workability. .
[0007]
In Patent Document 1, a funnel-shaped steel plate is provided at the column head of a column to be joined to the floor, and the funnel-shaped steel plate has a folded plate surface so that the unevenness is deeper in the center portion, and responds quickly to the stress state of the capitol portion. It is described that reinforcement is possible.
[0008]
Patent Document 2 relates to a joint structure between a steel pipe column and a slab in a flat slab structure. In order to prevent punching failure of the slab, a reinforcing iron plate 204 that supports shear stress is provided on the steel pipe column 203 as shown in FIG. It describes that reinforcing steel plates are provided with reinforcing bars 205 at the upper and lower ends so as to adhere firmly to concrete.
[0009]
Patent Document 3 relates to a structure of a flat slab excellent in workability when a column is a filled steel pipe column 203. As shown in FIG. 10, a steel beam 206 provided between adjacent columns as shown in FIG. It is described that the formwork deck 208 required for installation is supported and a slab is formed, whereby stress from the slab is transmitted to the column via the steel beam, and no capital is required.
[0010]
[Patent Document 1]
Japanese Patent Laid-Open No. 5-18031
[Patent Document 2]
JP-A-6-88392 [0012]
[Patent Document 3]
JP 2000-297493 A
[Problems to be solved by the invention]
However, in the structure described in Patent Document 2, a process for inserting the reinforcing steel plate into the steel pipe column is necessary, and a process for inserting a reinforcing bar into the reinforcing steel plate itself and making it orthogonal within the steel pipe column is required. Such deterioration of workability is inevitable.
[0014]
In addition, the flat slab structure described in Patent Document 3 is a slab structure suitable for a one-way slab, and when an adjacent floor section is to be constructed integrally, it is easy to arrange upper and lower bars, such as upper and lower bars, which are perpendicular to the steel beam. In addition, since the formwork is supported by the steel beam, the lower surface of the steel beam cannot be covered with concrete and exposed to the ceiling surface, and if a fire occurs, the strength of the steel beam is reduced.
[0015]
Therefore, an object of the present invention is to provide a flat slab structure in which slabs of a plurality of sections are structurally integrated by easy construction and excellent in fire resistance.
[0016]
[Means for Solving the Problems]
The object of the present invention is achieved by the following means.
[0017]
1. A flat slab structure having a steel beam spanning adjacent steel pipe columns, wherein the formwork is supported by a formwork receiving plate below the steel beam, and the formwork receiving plate is fixed to the steel beam by a fastening member A flat slab structure , wherein the steel beam is arranged so as to be embedded in floor concrete.
[0018]
2. The flat slab structure according to claim 1, wherein the mold receiving plate is coupled to the steel beam through a spacer.
[0019]
3. 2. The flat slab structure according to claim 1, wherein the mold receiving plate is bolted to the steel beam.
[0020]
4). The upper and lower bars are arranged so as not to cross the steel pipe column, the upper bars are arranged above the steel beam, and at least the lower bars in the direction perpendicular to the steel beam are arranged below the steel beam. The flat slab structure according to any one of 1 to 3, characterized in that:
[0021]
5). A flat slab structure having a steel beam spanning adjacent steel pipe columns, the steel beam being a lattice beam, and the formwork being supported by a formwork receiving plate provided in contact with the lower flange lower surface of the lattice beam. A flat slab structure characterized by
[0022]
6). 6. The flat slab structure according to claim 5, wherein a rebar in the beam perpendicular direction is inserted between the upper and lower flanges of the lattice beam.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a flat slab structure according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing a flat slab structure according to an embodiment of the present invention. A formwork 10 is supported by a formwork receiving plate 3 below a steel beam 2 spanned over a steel pipe column 1. Is fixed to the steel beam 2 with bolts 5 and nuts 6.
[0024]
Reinforcing bars are arranged in the floor concrete 7, the beam upper direction bar 8 b perpendicular to the steel beam 2 is above the steel beam 2, and the beam lower direction bar 9 b is below the steel beam 2 and is a frame receiving plate. The bar is arranged above 3.
[0025]
According to the present invention, since the formwork 10 is supported below the steel beam 2, the steel beam 2 is buried in the floor concrete 7 and is not directly exposed to the flame at the time of a fire, so that the fire resistance performance is improved. If the formwork receiving plate 3 and the bolt 5 are made of fireproof steel, the fireproof performance of the steel beam 2 is further improved.
[0026]
In addition, since the upper bar 8b in the beam orthogonal direction and the lower bar 9b in the beam orthogonal direction are arranged in different slab sections across the steel beam 2 in the slab, structural integrity is obtained even if the slab section is multi-section. The load moment is reduced, the amount of deflection is reduced, and the slab thickness can be reduced.
[0027]
Since the load of the slab is transmitted to the steel pipe column 1 by the steel beam 2, the upper bar 8 a and the lower bar 9 a that are arranged in parallel with the steel beam 2 can be arranged so as not to be inserted into the steel pipe column 1. Excellent workability can be obtained.
[0028]
FIG. 2 shows a flat slab structure according to another embodiment of the present invention, in which (a) shows the cross section direction of the steel beam, (b) shows the parallel direction of the steel beam, and the steel beam is stretched over the steel pipe column 1. A receiving plate 11 is attached below the spacer 4 with the spacer 4 interposed therebetween, and a plurality of spacers 4 are arranged in the longitudinal direction of the steel beam 2 so that the beam lower direction reinforcing bar 9b is inserted therebetween.
[0029]
In the floor concrete 7, upper end bars 8 a and beam orthogonal upper end bars 8 b are arranged above the steel beam 2, and beam orthogonal direction lower end bars 9 b are arranged below the steel beam 2.
[0030]
3 and 4 show a flat slab structure according to another embodiment of the invention described in claim 1, and FIG. 3 shows an example in which a formwork with a truss is used to support a fixed load when placing concrete. 4 shows an example in which the formwork is supported by a temporary beam.
[0031]
In FIG. 3, the truss-equipped form 18 includes reinforcing bars truss 181 a, 181 b, 181 c and a form 182, and is supported by a receiving plate 11 a below the steel beam 2 spanning the steel pipe column 1, and the receiving plate 11 a is a fastening member. At 19, it is fixed to the steel beam 2.
[0032]
The upper bar 8a and the upper beam 8b in the beam orthogonal direction are arranged above the steel beam 2, and the lower bar 9a is arranged so as to cross the reinforcing bars truss 181a and 181c. According to the present embodiment, it is possible to place concrete without supporting the formwork 182 with a supporting work (temporary material for formwork).
[0033]
In FIG. 4, the formwork 10 is supported by a truss-shaped temporary beam 21, and the temporary beam 21 is suspended by a receiving plate 11 below the steel beam. The upper bar 8a and the beam upper direction bar 8b are arranged above the steel beam, and the lower bar 9a and the beam lower direction bar 9b are arranged below the steel beam. According to the present embodiment, it is possible to place concrete without supporting the formwork 10 with a support work.
[0034]
FIG. 5 shows an embodiment of a flat slab structure according to the invention described in claim 5, wherein FIG. 5 (a) shows the structure in the beam cross-sectional direction and FIG. 3 (b) shows the structure in the beam side surface direction.
[0035]
In the present invention, the steel beam spanned over the steel pipe column 1 is a lattice beam 24, and includes an upper flange 14, a lower flange 15, an oblique member or a bundle member 16, and the mold deck 17 is supported by a receiving plate 11c, and the receiving plate 11c. Is attached to the lower flange 15. Instead of the mold deck 17, a mold can be used.
[0036]
Since the steel beam is a lattice beam, the rebar 12 in the beam orthogonal direction can be inserted through the gap of the diagonal member or the bundle member 16, and it is easy even when the slab is divided into a plurality of sections by the lattice beam. It is possible to construct a slab that is structurally integrated with the slab.
[0037]
In the case of a lattice beam, heat is not easily transmitted from the lower flange 15 to the upper flange 14, and even if the receiving plate 11c is exposed to a high temperature due to a fire or the like, the fire resistance performance of the upper flange 15 is hardly reduced. It is desirable that the lattice beam and the backing plate are made of refractory steel because the refractory performance is improved.
[0038]
FIG. 6 shows a structural frame of a structure in which a flat slab structure according to the present invention is used for a floor (slab) 23. A brace 22 is arranged as a horizontal resistance element on the frame consisting of the floor (slab) 23 and the steel pipe column 1. . Since the floor (slab) 23 has the steel beam 2, all the structural frames are steel members, and the construction of the steel frame can be advanced without waiting for the concrete placed on the floor slab to harden, thereby shortening the construction period. Even if the steel pipe column is a CFT column, the frame can be independent without waiting for the concrete to harden.
[0039]
In the above description, the steel pipe column 1 is not particularly limited in the present invention as long as it is a circular or square steel pipe or a filled concrete column (CFT column) filled with concrete.
[0040]
【The invention's effect】
According to the present invention, upper bars and lower bars can be arranged across the steel beam, the structural integration of the floor section can be improved, the span can be increased, and the slab thickness can be reduced. is there.
[0041]
In addition, since the steel beam is embedded in the floor concrete, a flat slab structure with excellent fire resistance can be obtained.
[0042]
Furthermore, all the structural frames are steel members, and it is possible to assemble the steel frames in advance without waiting for the concrete placed on the floor (slab) to harden.
[Brief description of the drawings]
FIG. 1 is a diagram showing a slab cross section of a flat slab structure according to an embodiment of the present invention.
2A and 2B are diagrams showing a flat slab structure according to another embodiment of the present invention, in which FIG. 2A is a cross-sectional direction of a steel beam, and FIG.
FIG. 3 is a view showing a slab cross section of a flat slab structure according to another embodiment of the present invention.
FIG. 4 is a view showing a slab cross section of a flat slab structure according to another embodiment of the present invention.
FIGS. 5A and 5B are diagrams showing a flat slab structure according to another embodiment of the present invention, in which FIG. 5A is a cross-sectional direction of a lattice beam, and FIG.
FIG. 6 is a view showing an example of a structure using a flat slab structure according to the present invention.
FIG. 7 is a diagram showing a moment distribution in a multi-compartment slab structure.
FIG. 8 is a view showing a conventional example of a reinforced concrete structure using capital.
FIG. 9 is a view showing a conventional example using a reinforcing iron plate.
FIG. 10 is a view showing a conventional example using a steel beam.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Steel pipe column 2 Steel beam 2a Steel large beam 2b Steel beam 3 Formwork receiving plate 4 Spacer 5 Bolt 6 Nut 7 Concrete floor 8a Top bar 8b Beam upper end bar 9a Bottom bar 9b Beam cross direction lower bar 10 Form frame 11, 11a, 11b, 11c Receiving plate 12 Reinforcement bar in beam orthogonal direction 13 Reinforcing bar in beam parallel direction 14 Upper flange 15 Lower flange 16 Diagonal material or bundle material 17 Formwork deck 18 Formwork 181a, 181b, 181c with truss Reinforcement truss, 182 Formwork 19 Fastening member 20 Temporary beam receiver 21 Temporary beam 22 Brace 23 Floor (slab)
24 Lattice beam 201 Flat slab 202 Capital 203 Steel pipe column 204 Reinforced iron plate 205 Reinforcement 206 Steel beam 207 Floor concrete 208 Formwork deck

Claims (6)

隣接する鋼管柱に掛け渡した鉄骨梁を有するフラットスラブ構造であって、前記鉄骨梁の下方で型枠が型枠受け板により支持され、前記型枠受け板が締結部材で前記鉄骨梁に固着され、前記鉄骨梁は床コンクリート中に埋設するように配置されていることを特徴とするフラットスラブ構造。A flat slab structure having a steel beam spanning adjacent steel pipe columns, wherein the formwork is supported by a formwork receiving plate below the steel beam, and the formwork receiving plate is fixed to the steel beam by a fastening member A flat slab structure , wherein the steel beam is arranged so as to be embedded in floor concrete. 前記型枠受け板はスペーサを介して前記鉄骨梁と結合されることを特徴とする請求項1記載のフラットスラブ構造。The flat slab structure according to claim 1, wherein the mold receiving plate is coupled to the steel beam through a spacer. 前記型枠受け板は前記鉄骨梁とボルト締結されることを特徴とする請求項1記載のフラットスラブ構造。The flat slab structure according to claim 1, wherein the formwork receiving plate is bolted to the steel beam. 鋼管柱と交差しないように上端筋、下端筋が配筋され、前記上端筋は鉄骨梁の上方に、前記下端筋の少なくとも鉄骨梁直交方向の下端筋が鉄骨梁の下方に配筋されていることを特徴とする請求項1ないし3のいずれか一つに記載のフラットスラブ構造。The upper and lower bars are arranged so as not to cross the steel pipe column, the upper bars are arranged above the steel beam, and at least the lower bars in the direction perpendicular to the steel beam are arranged below the steel beam. The flat slab structure according to any one of claims 1 to 3, wherein 隣接する鋼管柱に掛け渡した鉄骨梁を有するフラットスラブ構造であって、前記鉄骨梁はラチス梁で、型枠は前記ラチス梁の下フランジ下面と接して設けられた型枠受け板で支持されることを特徴とするフラットスラブ構造。A flat slab structure having a steel beam spanning an adjacent steel pipe column, wherein the steel beam is a lattice beam, and the formwork is supported by a formwork receiving plate provided in contact with the lower flange lower surface of the lattice beam. A flat slab structure characterized by 前記ラチス梁の上下フランジ間に梁直行方向鉄筋が挿通していることを特徴とする請求項5記載のフラットスラブ構造。6. The flat slab structure according to claim 5, wherein a rebar in the beam perpendicular direction is inserted between the upper and lower flanges of the lattice beam.
JP2002366131A 2002-12-18 2002-12-18 Flat slab structure Expired - Fee Related JP3938036B2 (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN102864860A (en) * 2012-09-07 2013-01-09 华侨大学 Well-type framed girder reinforced flat slab connecting structure

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CN106088583B (en) * 2016-08-12 2018-07-31 日照市伟业工具有限公司 Construction ceiling Concrete Double mode structure
CN107190898A (en) * 2017-06-29 2017-09-22 中国建筑第八工程局有限公司 Exempt from formwork super thick floor and its construction method
CN107190897A (en) * 2017-06-30 2017-09-22 中国二十二冶集团有限公司 Assembling type steel structure zigzag laminated floor slab connection method
CN109518941A (en) * 2018-11-29 2019-03-26 云南建投钢结构股份有限公司 Type steel bar truss floor support plate detachable card button attachment device and construction method
CN113062353A (en) * 2021-03-12 2021-07-02 上海建工七建集团有限公司 Rear vertical supporting structure used between basement floor slabs and installation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102864860A (en) * 2012-09-07 2013-01-09 华侨大学 Well-type framed girder reinforced flat slab connecting structure

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