JP2016151160A - Composite deck floor structure - Google Patents

Composite deck floor structure Download PDF

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JP2016151160A
JP2016151160A JP2015030196A JP2015030196A JP2016151160A JP 2016151160 A JP2016151160 A JP 2016151160A JP 2015030196 A JP2015030196 A JP 2015030196A JP 2015030196 A JP2015030196 A JP 2015030196A JP 2016151160 A JP2016151160 A JP 2016151160A
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groove
steel beam
floor structure
concrete
composite floor
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JP6589290B2 (en
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浩資 伊藤
Hiroshi Ito
浩資 伊藤
聡 北岡
Satoshi Kitaoka
聡 北岡
博巳 平山
Hiromi Hirayama
博巳 平山
半谷　公司
Koji Hanya
公司 半谷
誠明 中安
Masaaki Nakayasu
誠明 中安
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Nippon Steel Corp
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Nippon Steel and Sumitomo Metal Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a composite deck floor structure of a simple structure that enhances construction work efficiency, realizing an open living space by securing a high ceiling height while keeping a floor height low, by eliminating a need to install a binder.SOLUTION: In a building comprising a reinforced concrete column and a steel beam 12, a composite deck floor structure includes a lower flange part 21 connected to an upper flange 12a of the steel beam 12, the lower flange part being of a groove shape formed by bending into a groove-shaped cross-section, with a groove opening facing upward. Also included are a plurality of groove-shaped members 2 arranged with a lengthwise direction X2 thereof facing a direction orthogonal to a beam axial direction X1 of the steel beam 12, a reinforcing bar 3 placed on top of the groove-shaped members 2 arranged on the steel beam 12, and concrete 4 cast to have the reinforcing bar 3 embedded. Web parts 22 that form the groove shape of the adjacent groove-shaped members 2 are connected using a high-strength bolt.SELECTED DRAWING: Figure 1

Description

本発明は、鉄筋コンクリート造の柱と鉄骨梁とから構築される建物に用いられるデッキ合成床構造に関する。   The present invention relates to a deck composite floor structure used in a building constructed from reinforced concrete columns and steel beams.

従来、マンション等の鉄筋コンクリート（ＲＣ）造からなる集合住宅の建物において、天井高の確保と階高の最小化を両立している。具体的には、床の厚さを抑えつつ、音・振動に対して剛性を確保するために、ＲＣ造の平板床（中空化床含む）の構造が採用されている。このようなＲＣ床では、型枠の設置や、ＲＣ造の柱梁との取り合い等で手間と時間がかかる作業となり、施工性の点で後述するデッキ合成床構造に比べて劣ることから、短工期で行うことが難しいという現状がある。   Conventionally, in an apartment building made of reinforced concrete (RC) such as a condominium, both securing the ceiling height and minimizing the floor height have been achieved. Specifically, in order to secure rigidity against sound and vibration while suppressing the thickness of the floor, a structure of RC flat plate floor (including hollow floor) is adopted. Such an RC floor is time-consuming and time-consuming due to the installation of the formwork and the connection with the RC column beam, and is inferior to the deck composite floor structure described later in terms of workability. There is a current situation that it is difficult to do in the construction period.

これに対して、鉄筋コンクリート造の柱と鉄骨梁とから構築される鉄骨造の建物では、例えば図９に示されるような、施工性に優れた薄鋼板（デッキプレート）を用いたデッキ合成床構造が知られている。
図９（ａ）、（ｂ）に示す合成床１００は、波型部材１０１を用いたデッキ合成床構造であって、波型部材１０１の端部１０１ａを鉄骨梁１０２の上フランジ１０３上に載置させ、長手方向Ｘ２を鉄骨梁１０２の梁軸方向Ｘ１に直交する方向に向けて配列し、波型部材１０１の上方に鉄筋１０４を配筋し、波型部材１０１上に所定の厚さでコンクリート１０５を打設した構成となっている。コンクリート１０５は、鉄骨梁１０２の上フランジ１０３上に溶接により接合された頭付きスタッド１０６と、鉄筋１０４とを埋設して打設されている。この場合、鉄骨梁１０２と合成床１００のコンクリート１０５とが頭付きスタッド１０６を介して接合された構成となっている。 On the other hand, in a steel building constructed from reinforced concrete columns and steel beams, for example, as shown in FIG. 9, a deck composite floor structure using thin steel plates (deck plates) with excellent workability. It has been known.
The composite floor 100 shown in FIGS. 9A and 9B has a deck composite floor structure using a corrugated member 101, and the end 101 a of the corrugated member 101 is mounted on the upper flange 103 of the steel beam 102. The longitudinal direction X2 is arranged in a direction perpendicular to the beam axis direction X1 of the steel beam 102, the reinforcing bar 104 is arranged above the corrugated member 101, and the corrugated member 101 is formed with a predetermined thickness. The concrete 105 is placed. The concrete 105 is placed by embedding a headed stud 106 joined by welding on the upper flange 103 of the steel beam 102 and a reinforcing bar 104. In this case, the steel beam 102 and the concrete 105 of the composite floor 100 are joined via the headed stud 106.

また、特許文献１には、床梁と、Ｔ型起立リブおよび逆Ｕ断面状フック縁を有するＴ型デッキプレートと、が設けられ、前記逆Ｕ断面状フック縁と床梁の下部起立縁とを係合させることで連結された床構造について記載されている。   Further, Patent Document 1 includes a floor beam and a T-shaped deck plate having a T-shaped standing rib and an inverted U-section hook edge, and the inverted U-section hook edge and a lower standing edge of the floor beam, The floor structure connected by engaging is described.

特開平８−２７９３５号公報JP-A-8-27935

しかしながら、従来のデッキ合成床構造では以下のような問題があった。
すなわち、図９に示すような従来の建築用のデッキプレートは、例えば６〜７ｍの住戸スパンに対して小梁（図９（ｂ）に示す符号１０７）を省略することができないうえ、デッキプレートが波形の場合には凹凸形状となる問題があった。そのため、階高を抑えつつ天井高を確保した優れた住居空間とすることが求められていた。
また、特許文献１に示すデッキプレートは、構造が複雑であり、製作や加工に手間や時間がかかることから、その点で改善の余地があった。 However, the conventional deck composite floor structure has the following problems.
That is, the conventional building deck plate as shown in FIG. 9 cannot omit the beam (reference numeral 107 shown in FIG. 9B) for a dwelling unit span of 6 to 7 m, for example. In the case of a corrugated wave, there was a problem of forming an uneven shape. For this reason, there has been a demand for an excellent residential space that secures the ceiling height while suppressing the floor height.
Further, the deck plate shown in Patent Document 1 has a complicated structure, and it takes time and labor to manufacture and process, so there is room for improvement in that respect.

本発明は、上述する問題点に鑑みてなされたもので、簡単な構造で施工の効率化を図ることができるとともに、小梁を省略することを可能とすることで階高を抑えつつ天井高を確保した開放的な居住空間を実現することができるデッキ合成床構造を提供することを目的とする。   The present invention has been made in view of the above-described problems, and can improve the efficiency of construction with a simple structure, and can also reduce the height of the ceiling while suppressing the floor height by making it possible to omit the small beam. An object of the present invention is to provide a deck composite floor structure that can realize an open living space that secures the above.

上記目的を達成するため、本発明に係るデッキ合成床構造は、鉄筋コンクリート造の柱と、鉄骨梁と、から構築される建物において、前記鉄骨梁上に設けられる鉄骨鉄筋コンクリート造から構成されるデッキ合成床構造であって、断面溝型に折り曲げて一対のウェブおよび下フランジからなる溝型に形成されるとともに、溝開口を上方に向けた状態で配置され、前記下フランジ部が前記鉄骨梁の上フランジに接合されるとともに、長手方向を前記鉄骨梁の梁軸方向に直交する方向に向けて配列される複数の溝型部材と、該溝型部材を前記鉄骨梁上に配列させた上側に配筋された鉄筋と、該鉄筋を埋設して打設されるコンクリートと、を備え、隣り合う前記溝型部材の前記ウェブ部同士がボルト接合され、前記溝型部材には、前記一対のウェブ部のそれぞれの上端から溝幅方向の内側に向けて突出する上フランジ部が設けられていることを特徴としている。   In order to achieve the above object, a deck composite floor structure according to the present invention is a deck composite comprising a steel reinforced concrete structure provided on the steel beam in a building constructed from a reinforced concrete column and a steel beam. The floor structure is formed into a groove shape comprising a pair of webs and a lower flange by being bent into a cross-sectional groove shape, and is disposed with the groove opening facing upward, and the lower flange portion is located above the steel beam. A plurality of groove members that are joined to the flange and arranged in a direction perpendicular to the beam axis direction of the steel beam, and an upper side of the groove members arranged on the steel beam. A reinforcing bar that is reinforced and a concrete that is embedded and embedded, and the web portions of the adjacent groove-type members are bolted to each other, and the groove-type member includes the pair of webs. Flange upper protruding toward the inside of the groove width direction from each of the upper end is characterized by being provided with.

本発明では、複数の溝型部材同士がそれぞれのウェブ部を当接させてボルト接合され一体的に設けられるとともに、これら溝型部材と鉄骨梁の上フランジとが接合された状態で、溝型部材上に鉄筋が配筋されてコンクリートを打設することにより、鉄骨梁、溝型部材、鉄筋、及びコンクリートが一体化されたデッキ合成床構造を構築することができる。つまり、本発明では、溝型部材を鉄骨梁に対して直接、接合する構成となり、合成床に作用する水平せん断力等の力を溝型部材から鉄骨梁に伝達することができる。
このように本発明のデッキ合成床構造では、鉄骨梁とコンクリートとの接合に必要な頭付きスタッド等が不要となることから、手間のかかる施工を省略することができ、施工が容易になる。そして、鉄骨梁に複雑な加工を施す必要がなくなるという利点がある。 In the present invention, a plurality of groove-type members are bolted and integrally provided with their web portions abutted, and the groove-type members are joined together with the upper flange of the steel beam. By placing the reinforcing bars on the members and placing the concrete, it is possible to construct a deck composite floor structure in which steel beams, channel members, reinforcing bars, and concrete are integrated. That is, in this invention, it becomes a structure which joins a groove type member directly with respect to a steel beam, and forces, such as a horizontal shear force which acts on a synthetic floor, can be transmitted to a steel beam from a groove type member.
As described above, in the deck composite floor structure of the present invention, a headed stud or the like necessary for joining the steel beam and the concrete is not required, so that troublesome construction can be omitted and the construction becomes easy. And there exists an advantage that it becomes unnecessary to give a complicated process to a steel beam.

また、配列方向に隣り合う溝型部材のウェブ部同士を当接させてボルト接合することで、そのウェブ部同士が梁に相当する部分を構成することになる。すなわち、この部分にねじれ剛性をもたせた構造となり、合成床としての剛性が高められることから、鉄骨梁（大梁）同士の間に設けられる小梁を省略することができる。したがって、建物が低階高であっても住居の天井高を確保することができ、開放的な居住空間を実現することができるうえ、住居用の鉄筋コンクリートスラブの床構造に比べて薄肉化、かつ軽量化が可能になる利点がある。
しかも、配列方向に隣り合う溝型部材のウェブ部同士を当接させてボルト接合した状態で、ウェブ部、上フランジ部、及び下フランジ部によってＨ形鋼の梁に相当する部分を構成することができる。そのため、この部分のねじれ剛性をより高めた構造となり、合成床としての剛性をより一層高めることができる。
さらに、溝型部材が折り曲げ加工により簡単に製作することができるので、製作にかかる手間や時間を低減することができるとともに、コストの低減を図ることが可能となる。 Moreover, the web parts of the groove-shaped members adjacent to each other in the arrangement direction are brought into contact with each other and bolted, so that the web parts constitute a part corresponding to a beam. That is, this portion has a structure with torsional rigidity, and the rigidity as a composite floor is increased, so that the small beam provided between the steel beams (large beams) can be omitted. Therefore, even if the building has a low floor height, the ceiling height of the residence can be secured, an open living space can be realized, and the floor structure of the reinforced concrete slab for housing is reduced, and There is an advantage that the weight can be reduced.
In addition, the web portion, the upper flange portion, and the lower flange portion constitute the portion corresponding to the H-shaped steel beam in a state where the web portions of the groove-type members adjacent in the arrangement direction are brought into contact with each other and bolted together. Can do. Therefore, it becomes the structure which raised the torsional rigidity of this part more, and can further improve the rigidity as a synthetic floor.
Furthermore, since the groove member can be easily manufactured by bending, it is possible to reduce labor and time required for manufacturing and to reduce costs.

また、本発明に係るデッキ合成床構造は、前記溝型部材の下フランジ部は、前記鉄骨梁の上フランジに高力ボルトにより接合されていることが好ましい。   In the deck composite floor structure according to the present invention, it is preferable that the lower flange portion of the channel member is joined to the upper flange of the steel beam with a high-strength bolt.

この場合には、合成床と鉄骨梁との水平せん断力等の力の伝達を高力ボルトにもたせることができる。そして、高力ボルトによって溝型部材と鉄骨梁とが一体的に接合された構成となるので、溶接する場合に比べて施工効率を向上させることができる。   In this case, force transmission such as horizontal shearing force between the composite floor and the steel beam can be applied to the high-strength bolt. And since it becomes the structure by which the groove type member and the steel beam were integrally joined by the high strength volt | bolt, construction efficiency can be improved compared with the case where it welds.

また、本発明に係るデッキ合成床構造は、前記鉄筋は、前記上フランジ部によって下方より支持されていることが好ましい。   In the deck composite floor structure according to the present invention, the reinforcing bars are preferably supported from below by the upper flange portion.

この場合、デッキ合成床構造の施工時において、コンクリートの打設前に鉄筋を溝型部材の上フランジの上に載せた状態で配筋することができる。そのため、配筋時に必要とされるスペーサーが不要となり、施工が簡単になるうえ、コストの低減を図ることができる。   In this case, at the time of construction of the deck composite floor structure, the reinforcing bars can be arranged in a state where the reinforcing bars are placed on the upper flange of the channel member before placing the concrete. Therefore, a spacer required at the time of bar arrangement becomes unnecessary, construction is simplified, and cost can be reduced.

また、本発明に係るデッキ合成床構造は、前記上フランジ部には、厚さ方向に貫通する貫通孔が設けられていることが好ましい。   In the deck composite floor structure according to the present invention, it is preferable that the upper flange portion is provided with a through hole penetrating in the thickness direction.

本発明では、溝型部材の凹溝内にコンクリートを充填する際に、上フランジ部の下面側に溜まる空気を貫通孔より排出させることができるため、その下面側にエア溜まりが生じることを抑制することができる。これにより、溝型部材とコンクリートとが確実に固着され、合成床としての品質を確保することができる。   In the present invention, when the concrete is filled in the concave groove of the groove member, the air accumulated on the lower surface side of the upper flange portion can be discharged from the through hole, thereby suppressing the occurrence of air accumulation on the lower surface side. can do. Thereby, a channel type member and concrete are firmly fixed, and the quality as a synthetic floor can be secured.

また、本発明に係るデッキ合成床構造は、前記溝型部材の凹溝内に充填される前記コンクリートには、前記溝型部材の長手方向に沿って延在し、前記コンクリートよりも軽量な円形柱状体が配設されていることが好ましい。   In the deck composite floor structure according to the present invention, the concrete filled in the groove of the groove member extends along the longitudinal direction of the groove member, and is a lighter circular shape than the concrete. It is preferable that a columnar body is provided.

本発明では、溝型部材の凹溝内に充填されるコンクリート中に、コンクリートよりも軽量となる円形柱状体が埋設されるので、合成床としての剛性を維持しつつ、鉄筋コンクリート床に比べて薄肉化、かつ軽量化を図ることができる。例えば鋼管や塩ビ管等の円形柱状体を埋設することで、コンクリートが中空化され、合成床全体として軽量化された構成にすることができる。   In the present invention, since the circular columnar body that is lighter than concrete is embedded in the concrete filled in the concave groove of the groove-type member, it is thinner than the reinforced concrete floor while maintaining the rigidity as a composite floor. And weight reduction can be achieved. For example, by embedding a circular columnar body such as a steel pipe or a vinyl chloride pipe, the concrete can be hollowed out and the entire synthetic floor can be reduced in weight.

本発明のデッキ合成床構造によれば、簡単な構造で施工の効率化を図ることができるとともに、小梁を省略することを可能とすることで階高を抑えつつ天井高を確保した開放的な居住空間を実現することができる。   According to the deck composite floor structure of the present invention, the construction efficiency can be improved with a simple structure, and the ceiling height is secured while suppressing the floor height by making it possible to omit the small beam. A comfortable living space.

本発明の実施の形態による合成床の構成を示す斜視図である。It is a perspective view which shows the structure of the synthetic floor by embodiment of this invention. 図１に示す合成床において、鉄筋およびコンクリートを省略した平面図である。It is the top view which abbreviate | omitted the reinforcing bar and concrete in the synthetic floor shown in FIG. 図２に示すＡ−Ａ線断面図であって、溝型部材を長手方向から見た側断面図である。It is the sectional view on the AA line shown in FIG. 2, Comprising: It is the sectional side view which looked at the groove type member from the longitudinal direction. 図２に示すＢ−Ｂ線断面図であって、溝型部材を溝幅方向から見た側断面図である。FIG. 3 is a cross-sectional view taken along line B-B shown in FIG. 2, and is a side cross-sectional view of the groove type member as viewed from the groove width direction. 溝型部材を斜め上方から見た斜視図である。It is the perspective view which looked at the channel type member from diagonally upward. 図５に示す溝型部材を長手方向から見た側面図である。It is the side view which looked at the channel type member shown in FIG. 5 from the longitudinal direction. 実施の形態の変形例による合成床の構成を示す側断面図であって、図３に対応する図である。It is a sectional side view which shows the structure of the synthetic floor by the modification of embodiment, Comprising: It is a figure corresponding to FIG. 図７に示す合成床において、溝型部材を溝幅方向から見た側断面図であって、図４に対応する図である。In the synthetic floor shown in FIG. 7, it is the sectional side view which looked at the groove type member from the groove width direction, Comprising: It is a figure corresponding to FIG. 従来のデッキプレートを用いた合成床の構成を示す図であって、（ａ）は図９（ｂ）に示すＣ−Ｃ線断面図、（ｂ）は上から見た平面図である。It is a figure which shows the structure of the synthetic floor using the conventional deck plate, Comprising: (a) is CC sectional view taken on the line shown in FIG.9 (b), (b) is the top view seen from the top.

以下、本発明の実施の形態によるデッキ合成床構造について、図面に基づいて説明する。   Hereinafter, a deck composite floor structure according to an embodiment of the present invention will be described with reference to the drawings.

図１及び図２に示すように、本実施の形態によるデッキ合成床構造は、例えば集合住宅からなる建物１０に採用され、その建物１０内に設けられる鉄骨鉄筋コンクリート造の合成床１を対象としている。建物１０は、鉄筋コンクリート造の柱１１と、Ｈ形鋼材を用いた大梁をなす鉄骨梁１２と、を備えた構造である。鉄骨梁１２は、階毎に所定の間隔をあけて配列されている。本実施の形態では、住戸スパンＤ毎に柱１１及び鉄骨梁１２が配列され、配列方向に隣り合う鉄骨梁１２、１２同士を架け渡すようにして合成床１が設けられている。   As shown in FIGS. 1 and 2, the deck composite floor structure according to the present embodiment is employed in a building 10 made of, for example, a housing complex, and is intended for a steel reinforced concrete composite floor 1 provided in the building 10. . The building 10 has a structure including a reinforced concrete column 11 and a steel beam 12 that forms a large beam using an H-shaped steel material. The steel beam 12 is arranged at predetermined intervals for each floor. In the present embodiment, columns 11 and steel beams 12 are arranged for each dwelling span D, and the composite floor 1 is provided so as to bridge the steel beams 12 and 12 adjacent in the arrangement direction.

図１及び図３に示すように、合成床１は、断面溝型に折り曲げて形成された溝型部材２と、溝型部材２を鉄骨梁１２上に配列させた上側に配筋された鉄筋３と、これら鉄筋３を埋設して打設されるコンクリート４と、を備えている。   As shown in FIG. 1 and FIG. 3, the composite floor 1 includes a groove member 2 formed by bending into a cross-sectional groove shape, and a reinforcing bar arranged on the upper side where the groove member 2 is arranged on a steel beam 12. 3 and concrete 4 which is laid by embedding these reinforcing bars 3.

溝型部材２は、図２乃至図５に示すように、薄鋼板のデッキプレートを短手方向（以下、溝幅方向Ｗという）の両端を上側に向けて折り曲げた形状であり、平面視において溝開口を上方に向けた状態で長手方向Ｘ２を鉄骨梁１２の梁軸方向Ｘ１に直交する方向に向けて隣り合う一対の鉄骨梁１２、１２上に載置されている。そして、複数の溝型部材２、２、…が梁軸方向Ｘ１に沿って配列されている。   As shown in FIGS. 2 to 5, the groove-shaped member 2 has a shape in which a deck plate of a thin steel plate is bent with both ends in a short direction (hereinafter referred to as a groove width direction W) facing upward. It is mounted on a pair of adjacent steel beams 12 and 12 with the longitudinal direction X2 facing the direction orthogonal to the beam axis direction X1 of the steel beam 12 with the groove opening facing upward. .. Are arranged along the beam axial direction X1.

溝型部材２は、図５及び図６に示すように、下フランジ部２１と、下フランジ部２１の溝幅方向Ｗの両側から屈折された一対のウェブ部２２と、各ウェブ部２２のそれぞれの先端から溝幅方向Ｗの内側に向けて突出する上フランジ部２３と、を有している。上フランジ部２３には、上下に貫通する貫通孔２４が長手方向Ｘ２に沿って所定間隔をあけて設けられている。これら貫通孔２４は、溝型部材２の凹溝２ａ内にコンクリート４を充填する際に上フランジ部２３の下面２３ａ側にエア溜まりを防ぐためのエア抜きの機能を有している。   As shown in FIGS. 5 and 6, the groove member 2 includes a lower flange portion 21, a pair of web portions 22 refracted from both sides of the lower flange portion 21 in the groove width direction W, and each of the web portions 22. And an upper flange portion 23 that protrudes inward in the groove width direction W from the front end. The upper flange portion 23 is provided with through holes 24 penetrating in the vertical direction at a predetermined interval along the longitudinal direction X2. These through holes 24 have a function of releasing air to prevent air accumulation on the lower surface 23 a side of the upper flange portion 23 when the concrete 4 is filled in the concave groove 2 a of the groove member 2.

溝型部材２は、図３及び図４に示すように、下フランジ部２１が鉄骨梁１２の上フランジ１２ａに対して高力ボルト１３によって接合されている。鉄骨梁１２の上フランジ１２ａには、住戸スパンＤ方向（図２参照）に隣り合う溝型部材２、２のそれぞれの長手方向Ｘ２の端部２ｂ（図１参照）が載置される。
また、梁軸方向Ｘ１に沿って配列される複数の溝型部材２同士は、双方のウェブ部２２、２２同士を当接させて高力ボルト２５によって接合されている。 As shown in FIGS. 3 and 4, the groove member 2 has a lower flange portion 21 joined to the upper flange 12 a of the steel beam 12 by a high-strength bolt 13. On the upper flange 12a of the steel beam 12, end portions 2b (see FIG. 1) in the longitudinal direction X2 of the groove members 2 and 2 adjacent to each other in the dwelling unit span D direction (see FIG. 2) are placed.
Further, the plurality of groove-type members 2 arranged along the beam axis direction X <b> 1 are joined by a high-strength bolt 25 with both web portions 22, 22 in contact with each other.

鉄筋３は、配列された複数の溝型部材２上の所定位置に縦横に配筋されている。鉄筋３の径寸法は、適宜な寸法のものを採用することができる。   The reinforcing bars 3 are arranged vertically and horizontally at predetermined positions on the plurality of groove-type members 2 arranged. The diameter of the reinforcing bar 3 can be of an appropriate size.

コンクリート４は、鉄骨梁１２上に配置された複数の溝型部材２の上側に所定の厚さで打設され、溝型部材２および鉄筋３と一体的に設けられる。鉄筋３は、打設したコンクリート４にその上面４ａから所定の被り厚を確保した位置に埋設される。   The concrete 4 is placed with a predetermined thickness on the upper side of the plurality of groove-type members 2 arranged on the steel beam 12, and is provided integrally with the groove-type member 2 and the reinforcing bars 3. The reinforcing bar 3 is embedded in the placed concrete 4 at a position where a predetermined covering thickness is secured from the upper surface 4a.

ここで、このように構成される合成床１の寸法として、例えば溝型部材２の高さ寸法が１００〜２００ｍｍ、板厚が１〜６ｍｍ、幅寸法が６００〜１８００ｍｍ、上フランジ部の張出し長が５０〜２００ｍｍとされ、溝型部材２の上フランジ部２３からコンクリート４の上面４ａまでの寸法（被り厚）が３０〜８０ｍｍとされる。合成床１全体の厚さ寸法として１３０〜２８０ｍｍ程度とされる。また、溝型部材２と鉄骨梁１２の上フランジ１２ａとを接合する高力ボルト１３としては、呼び径でＭ１６〜２２ｍｍ、ボルト同士の間隔が２００〜５００ｍｍとされる。   Here, as the dimensions of the synthetic floor 1 configured as described above, for example, the height dimension of the groove member 2 is 100 to 200 mm, the plate thickness is 1 to 6 mm, the width dimension is 600 to 1800 mm, and the overhang length of the upper flange portion Is 50 to 200 mm, and the dimension (covering thickness) from the upper flange portion 23 of the groove member 2 to the upper surface 4a of the concrete 4 is 30 to 80 mm. The total thickness of the synthetic floor 1 is about 130 to 280 mm. Moreover, as the high strength bolt 13 which joins the groove type member 2 and the upper flange 12a of the steel beam 12, it is M16-22mm in nominal diameter, and the space | interval of bolts shall be 200-500mm.

以上説明したデッキ合成床構造によれば、図３及び図４に示すように、複数の溝型部材２、２同士がそれぞれのウェブ部２２を当接させて高力ボルト２５で接合され一体的に設けられる。そして、これら溝型部材２と鉄骨梁１２の上フランジ１２ａとが接合された状態で、溝型部材２上に鉄筋３が配筋されてコンクリート４を打設することにより、鉄骨梁１２、溝型部材２、鉄筋３、及びコンクリート４が一体化された合成床１を構築することができる。つまり、本実施の形態では、溝型部材２を鉄骨梁１２に対して直接、接合する構成となり、合成床１に作用する水平せん断力等の力を溝型部材２から鉄骨梁１２に伝達することができる。
図４では、施工性を向上させるために溝型部材２の間に隙間を設けているが、施工上問題なければ隙間を設けなくてもよい。
このように本実施の形態では、鉄骨梁１２とコンクリート４との接合に必要な頭付きスタッド等（図示省略）が不要となることから、手間のかかる施工を省略することができ、施工が容易になる。そして、鉄骨梁１２に複雑な加工を施す必要がなくなるという利点がある。 According to the deck composite floor structure described above, as shown in FIG. 3 and FIG. 4, the plurality of groove members 2, 2 are joined together by the high-strength bolts 25 with the web portions 22 in contact with each other. Is provided. Then, in a state where the groove member 2 and the upper flange 12a of the steel beam 12 are joined, the reinforcing bar 3 is arranged on the groove member 2 and the concrete 4 is placed, so that the steel beam 12, the groove A synthetic floor 1 in which the mold member 2, the reinforcing bar 3, and the concrete 4 are integrated can be constructed. That is, in the present embodiment, the groove member 2 is directly joined to the steel beam 12, and a force such as a horizontal shearing force acting on the composite floor 1 is transmitted from the groove member 2 to the steel beam 12. be able to.
In FIG. 4, a gap is provided between the groove members 2 in order to improve the workability. However, if there is no problem in construction, the gap may not be provided.
As described above, in the present embodiment, a headed stud or the like (not shown) required for joining the steel beam 12 and the concrete 4 is not required, so that troublesome construction can be omitted and construction is easy. become. In addition, there is an advantage that it is not necessary to perform complicated processing on the steel beam 12.

また、本実施の形態では、配列方向（梁軸方向Ｘ１）に隣り合う溝型部材２、２のウェブ部２２同士を当接させてボルト接合した状態で、ウェブ部２２、上フランジ部２３、及び下フランジ部２１によってＨ形鋼の梁に相当する部分を構成することができる。そのため、この部分のねじれ剛性をより高めた構造となり、合成床１としての剛性をより一層高めることができることから、鉄骨梁１２（大梁）同士の間に設けられる小梁を省略することができる。したがって、本実施の形態のように建物１０が低階高の集合住宅であっても住居の天井高を確保することができ、開放的な居住空間を実現することができるうえ、住居用の鉄筋コンクリートスラブの床構造に比べて薄肉化、かつ軽量化が可能になる利点がある。
さらに、溝型部材２が折り曲げ加工により簡単に製作することができるので、製作にかかる手間や時間を低減することができるとともに、コストの低減を図ることが可能となる。 Moreover, in this Embodiment, the web part 22, the upper flange part 23, in the state which contact | abutted the web parts 22 of the groove type members 2 and 2 adjacent to the sequence direction (beam axial direction X1), and was bolt-joined. The lower flange portion 21 can constitute a portion corresponding to an H-shaped steel beam. For this reason, the torsional rigidity of this portion is further increased, and the rigidity of the composite floor 1 can be further increased, so that the small beams provided between the steel beams 12 (large beams) can be omitted. Therefore, even if the building 10 is a low-rise apartment house as in the present embodiment, the ceiling height of the residence can be secured, an open living space can be realized, and the reinforced concrete for residence can be realized. Compared to the floor structure of a slab, there is an advantage that the thickness can be reduced and the weight can be reduced.
Furthermore, since the groove member 2 can be easily manufactured by bending, it is possible to reduce the labor and time required for manufacturing and to reduce the cost.

また、本実施の形態では、溝型部材２の下フランジ部２１が鉄骨梁１２の上フランジ１２ａに高力ボルト１３により接合されているので、合成床１と鉄骨梁１２との水平せん断力等の力の伝達を高力ボルト１３にもたせることができる。そして、高力ボルト１３によって溝型部材２と鉄骨梁１２とが一体的に接合された構成となるので、溶接する場合に比べて施工効率を向上させることができる。   In the present embodiment, since the lower flange portion 21 of the channel member 2 is joined to the upper flange 12a of the steel beam 12 by the high strength bolt 13, the horizontal shearing force between the composite floor 1 and the steel beam 12, etc. The transmission of the force can be applied to the high-strength bolt 13. And since it becomes the structure by which the groove type member 2 and the steel beam 12 were integrally joined by the high strength volt | bolt 13, construction efficiency can be improved compared with the case where it welds.

さらに、鉄筋３が溝型部材２の上フランジ部２３によって下方より支持された構成であることから、合成床１の施工時において、コンクリート４の打設前に鉄筋３を溝型部材２の上フランジ２３の上に載せた状態で配筋することができる。そのため、配筋時に必要とされるスペーサーが不要となり、施工が簡単になるうえ、コストの低減を図ることができる。   Furthermore, since the reinforcing bar 3 is supported from below by the upper flange portion 23 of the groove member 2, the reinforcing bar 3 is placed on the groove member 2 before the concrete 4 is placed when the composite floor 1 is constructed. The bar arrangement can be performed in a state of being placed on the flange 23. Therefore, a spacer required at the time of bar arrangement becomes unnecessary, construction is simplified, and cost can be reduced.

さらにまた、本実施の形態では、溝型部材２の上フランジ部２３に貫通孔２４が設けられているので、溝型部材２の凹溝２ａ内にコンクリート４を充填する際に、上フランジ部２３の下面２３ａ側に溜まる空気を貫通孔より排出させることができ、その下面２３ａ側にエア溜まりが生じることを抑制することができる。これにより、溝型部材２とコンクリート４とが確実に固着され、合成床１としての品質を確保することができる。   Furthermore, in the present embodiment, since the through-hole 24 is provided in the upper flange portion 23 of the groove member 2, when filling the concrete 4 into the concave groove 2 a of the groove member 2, the upper flange portion The air accumulated on the lower surface 23a side of 23 can be discharged from the through hole, and the occurrence of air accumulation on the lower surface 23a side can be suppressed. Thereby, the channel member 2 and the concrete 4 are firmly fixed, and the quality as the synthetic floor 1 can be ensured.

上述のように本実施の形態によるデッキ合成床構造では、簡単な構造で施工の効率化を図ることができるとともに、小梁を省略することを可能とすることで階高を抑えつつ天井高を確保した開放的な居住空間を実現することができる効果を奏する。   As described above, in the deck composite floor structure according to the present embodiment, the construction efficiency can be improved with a simple structure, and the ceiling height can be reduced while suppressing the floor height by making it possible to omit the small beam. There is an effect that it is possible to realize a secured open living space.

以上、本発明によるデッキ合成床構造の実施の形態について説明したが、本発明は上記の実施の形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。   As mentioned above, although embodiment of the deck synthetic floor structure by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.

例えば、本実施の形態では、溝型部材２の凹溝２ａの内側全体にコンクリート４が充填され中実となっているが、これに限定されることはなく、コンクリート４よりも軽量な円形柱状体を溝型部材２の長手方向Ｘ２に沿って延在して配設する構成としてもよい。例えば、図７及び図８に示す変形例による合成床１Ａ（デッキ合成床構造）は、溝型部材２の凹溝２ａ内に充填されるコンクリート４中に、円筒状の鋼管や塩ビ管等の複数本の中空管５（円形柱状体）が溝幅方向Ｗに間隔をあけて配設された構成となっている。なお、この場合においても、図８に示すように、溝型部材２、２同士の間、及び中空管５、５同士の間に隙間を設けることで施工性を向上させることができるが、この施工の際には中空管５の両端部には蓋（不図示）などで目張りしておけばよい。
本変形例では、複数の中空管５をコンクリート４中に埋設することで、コンクリート４が中空化され、合成床１Ａとしての剛性を維持しつつ、鉄筋コンクリート床に比べて薄肉化、かつ軽量化を図ることができる。 For example, in the present embodiment, the concrete 4 is filled with the entire inside of the concave groove 2 a of the groove-shaped member 2 to form a solid, but the present invention is not limited to this, and is a circular column shape that is lighter than the concrete 4. The body may be arranged so as to extend along the longitudinal direction X2 of the groove member 2. For example, the composite floor 1A (deck composite floor structure) according to the modification shown in FIGS. 7 and 8 is made of a concrete steel 4 filled in the concave groove 2a of the groove-type member 2 such as a cylindrical steel pipe or a PVC pipe. A plurality of hollow tubes 5 (circular columnar bodies) are arranged at intervals in the groove width direction W. In this case, as shown in FIG. 8, the workability can be improved by providing a gap between the groove-type members 2 and 2 and between the hollow tubes 5 and 5. In this construction, both ends of the hollow tube 5 may be covered with a lid (not shown) or the like.
In this modification, by embedding a plurality of hollow tubes 5 in the concrete 4, the concrete 4 is hollowed, and while maintaining the rigidity as the synthetic floor 1 </ b> A, it is thinner and lighter than the reinforced concrete floor. Can be achieved.

また、例えばコンクリートよりも軽量なスタイロフォーム（ダウ化工社製、登録商標）等の耐火性、断熱性を有する発泡材を円形柱状に成形した円形柱状体をコンクリート４中に埋設するようにしてもよい。   Further, for example, a circular columnar body formed by molding a foam material having fire resistance and heat insulation into a circular column shape such as a styrofoam (registered trademark, manufactured by Dow Chemical Co., Ltd.) that is lighter than concrete may be embedded in the concrete 4. .

また、溝型部材２の長手寸法、幅寸法、厚さ寸法、ウェブ部２２の高さ寸法、上フランジ部２３の張出し寸法などの形状、大きさ等は合成床１としての所望の剛性、鉄骨梁１２の寸法等の条件に基づいて適宜設定することができる。
例えば、本実施の形態では、溝型部材２の形状として、一対のウェブ部２２のそれぞれの上端から溝幅方向Ｗの内側に突出する上フランジ部２３を設ける構成としているが、この上フランジ部２３を省略することも可能である。上フランジ部２３を省略する構成の場合には、鉄筋３の支持手段として別の手段を設けるようにすればよい。 In addition, the shape, size, etc., such as the longitudinal dimension, width dimension, thickness dimension, web part 22 height dimension, overhanging dimension of the upper flange part 23, and the like of the grooved member 2 are the desired rigidity, steel frame, etc. It can be set as appropriate based on conditions such as the dimensions of the beam 12.
For example, in the present embodiment, as the shape of the groove member 2, the upper flange portion 23 that protrudes inward in the groove width direction W from the respective upper ends of the pair of web portions 22 is provided. It is also possible to omit 23. In the case of a configuration in which the upper flange portion 23 is omitted, another means may be provided as a means for supporting the reinforcing bar 3.

さらに、上フランジ部２３に設けられる貫通孔２４の孔径、数量、配置などの構成についても適宜設定することができる。なお、貫通孔２４は、省略することも可能である。   Furthermore, the configuration of the through hole 24 provided in the upper flange portion 23 such as the hole diameter, quantity, and arrangement can be set as appropriate. The through hole 24 can be omitted.

また、本実施の形態では、溝型部材２と鉄骨梁１２との接合に高力ボルト１３を用いた接合構造としているが、これに限定されることはなく、例えば溶接等による接合構造であってもかまわない。   In this embodiment, the high-strength bolt 13 is used for joining the groove member 2 and the steel beam 12. However, the present invention is not limited to this structure. It doesn't matter.

その他、本発明の趣旨を逸脱しない範囲で、上記した実施の形態における構成要素を周知の構成要素に置き換えることは適宜可能である。   In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention.

１、１Ａ 合成床（デッキ合成床構造）
２ 溝型部材
２ａ 凹溝
２ｂ 溝型部材の端部
３ 鉄筋
４ コンクリート
４ａ コンクリートの上面
５ 中空管
１０ 建物
１１ 柱
１２ 鉄骨梁
１２ａ 上フランジ
１３ 高力ボルト
２１ 下フランジ部
２２ ウェブ部
２３ 上フランジ部
２３ａ 上フランジ部の下面
２４ 貫通孔
２５ 高力ボルト
１００ 合成床
１０１ 波型部材
１０１ａ 波型部材の端部
１０２ 鉄骨梁
１０３ 上フランジ
１０４ 鉄筋
１０５ コンクリート
１０６ 頭付きスタッド
１０７ 小梁
Ｄ 住戸スパン
Ｘ１ 梁軸方向
Ｘ２ 溝型部材の長手方向
Ｗ 溝型部材の溝幅方向 1, 1A Synthetic floor (Deck synthetic floor structure)
2 Groove member 2a Groove 2b End of groove member 3 Reinforcement 4 Concrete 4a Top surface of concrete 5 Hollow tube 10 Building 11 Column 12 Steel beam 12a Upper flange 13 High strength bolt 21 Lower flange portion 22 Web portion 23 Upper flange Part 23a Lower surface of upper flange part 24 Through hole 25 High-strength bolt 100 Composite floor 101 Corrugated member 101a End part of corrugated member 102 Steel beam 103 Upper flange 104 Reinforcement 105 Concrete 106 Headed stud 107 Small beam D Dwelling unit span X1 beam Axial direction X2 Longitudinal direction of groove type member W Groove width direction of groove type member

Claims (5)

鉄筋コンクリート造の柱と、鉄骨梁と、から構築される建物において、前記鉄骨梁上に設けられる鉄骨鉄筋コンクリート造から構成されるデッキ合成床構造であって、
断面溝型に折り曲げて一対のウェブおよび下フランジからなる溝型に形成されるとともに、溝開口を上方に向けた状態で配置され、前記下フランジ部が前記鉄骨梁の上フランジに接合されるとともに、長手方向を前記鉄骨梁の梁軸方向に直交する方向に向けて配列される複数の溝型部材と、
該溝型部材を前記鉄骨梁上に配列させた上側に配筋された鉄筋と、
該鉄筋を埋設して打設されるコンクリートと、
を備え、
隣り合う前記溝型部材の前記ウェブ部同士がボルト接合され、
前記溝型部材には、前記一対のウェブ部のそれぞれの上端から溝幅方向の内側に向けて突出する上フランジ部が設けられていることを特徴とするデッキ合成床構造。 In a building constructed from reinforced concrete columns and steel beams, a deck composite floor structure composed of steel reinforced concrete structures provided on the steel beams,
It is bent into a cross-sectional groove mold and formed into a groove mold consisting of a pair of webs and a lower flange, and is arranged with the groove opening facing upward, and the lower flange portion is joined to the upper flange of the steel beam A plurality of groove-type members arranged in a direction perpendicular to the beam axis direction of the steel beam;
Reinforcing bars arranged on the upper side in which the groove members are arranged on the steel beam; and
Concrete to be embedded with the reinforcing bars,
With
The web portions of the adjacent groove members are bolted together,
The deck composite floor structure, wherein the groove member is provided with an upper flange portion that protrudes inward in the groove width direction from each upper end of the pair of web portions. 前記溝型部材の下フランジ部は、前記鉄骨梁の上フランジに高力ボルトにより接合されていることを特徴とする請求項１に記載のデッキ合成床構造。   2. The deck composite floor structure according to claim 1, wherein the lower flange portion of the groove member is joined to the upper flange of the steel beam with a high-strength bolt. 前記鉄筋は、前記上フランジ部によって下方より支持されていることを特徴とする請求項１又は２に記載のデッキ合成床構造。   The deck composite floor structure according to claim 1 or 2, wherein the reinforcing bars are supported by the upper flange portion from below. 前記上フランジ部には、厚さ方向に貫通する貫通孔が設けられていることを特徴とする請求項１乃至３のいずれか１項に記載のデッキ合成床構造。   The deck composite floor structure according to any one of claims 1 to 3, wherein the upper flange portion is provided with a through-hole penetrating in the thickness direction. 前記溝型部材の凹溝内に充填される前記コンクリートには、前記溝型部材の長手方向に沿って延在し、前記コンクリートよりも軽量な円形柱状体が配設されていることを特徴とする請求項１乃至４のいずれか１項に記載のデッキ合成床構造。   The concrete filled in the groove of the groove member is provided with a circular columnar body that extends along the longitudinal direction of the groove member and is lighter than the concrete. The deck composite floor structure according to any one of claims 1 to 4.
JP2015030196A 2015-02-19 2015-02-19 Deck composite floor structure Expired - Fee Related JP6589290B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108625485A (en) * 2018-06-04 2018-10-09 浙江中益建材科技有限公司 A kind of steel bar girder plate end connecting joint structure and construction method
CN109057150A (en) * 2018-08-31 2018-12-21 中建四局第四建筑工程有限公司 A kind of transformation girder construction stress method
CN113775064A (en) * 2021-10-11 2021-12-10 和能人居科技(天津)集团股份有限公司 Vibration reduction connecting structure of box plate type building, box plate type steel structure building and construction method of box plate type steel structure building

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JPS62187011U (en) * 1986-05-14 1987-11-28
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WO1994029541A1 (en) * 1993-06-10 1994-12-22 Breuning Joergen Illner Two-way self-supporting reinforcement formwork
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JPH11141036A (en) * 1997-11-13 1999-05-25 Ishii:Kk Floor component unit for building and floor construction using it
WO1999055978A1 (en) * 1998-04-24 1999-11-04 Granstroem Anders Floor structure
JP2000160843A (en) * 1998-11-30 2000-06-13 Shimizu Corp Laying method for deck plate and slinging jig therefor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108625485A (en) * 2018-06-04 2018-10-09 浙江中益建材科技有限公司 A kind of steel bar girder plate end connecting joint structure and construction method
CN109057150A (en) * 2018-08-31 2018-12-21 中建四局第四建筑工程有限公司 A kind of transformation girder construction stress method
CN113775064A (en) * 2021-10-11 2021-12-10 和能人居科技(天津)集团股份有限公司 Vibration reduction connecting structure of box plate type building, box plate type steel structure building and construction method of box plate type steel structure building

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