JP2018059345A - Composite floor slab - Google Patents

Composite floor slab Download PDF

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JP2018059345A
JP2018059345A JP2016198358A JP2016198358A JP2018059345A JP 2018059345 A JP2018059345 A JP 2018059345A JP 2016198358 A JP2016198358 A JP 2016198358A JP 2016198358 A JP2016198358 A JP 2016198358A JP 2018059345 A JP2018059345 A JP 2018059345A
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floor slab
steel plate
concrete
bottom steel
composite floor
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JP6868994B2 (en
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滝本　和志
Kazuyuki Takimoto
和志 滝本
田中　博一
Hirokazu Tanaka
博一 田中
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Shimizu Construction Co Ltd
Shimizu Corp
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Shimizu Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a composite floor slab capable of reducing the weight while increasing the size of members to thereby reduce the construction labor and time resulting in a cost down.SOLUTION: A composite floor slab A is constituted of a bottom steel plate 1 and a concrete 2 to three-dimensionally integrate with each other by laying a concrete 2 above the bottom steel plate 1. The bottom steel plate 1 has a hollow structure body 4 constituted of plural tubular members 3, which are integrally assembled and fixed at the inner surface side to be laid with concrete 2.SELECTED DRAWING: Figure 1

Description

本発明は、鋼板とコンクリートを一体成形してなる合成床版に関する。   The present invention relates to a composite floor slab formed by integrally molding a steel plate and concrete.

長支間化が可能で高い疲労耐久性を有するため、鋼板とコンクリートを一体形成してなる合成床版（鋼・コンクリート合成床版）を道路橋や鉄道橋の床版として用いるケースが増えている（例えば、特許文献１参照）。   Due to the possibility of long spans and high fatigue durability, an increasing number of cases are using synthetic floor slabs (steel / concrete composite floor slabs) that are formed integrally of steel and concrete as floor slabs for road and railway bridges. (For example, refer to Patent Document 1).

そして、このように道路橋や鉄道橋の床版として用いる場合には、底鋼板が型枠を兼ねるメリットを活かすため、一般に、工場製作した鋼板パネルを架設現場に輸送し、現場でコンクリートの打込みを行うようにしている。   And when using it as a floor slab for road bridges and railway bridges in this way, in order to take advantage of the bottom steel plate also serving as a formwork, in general, the steel plate panel manufactured at the factory is transported to the construction site, and concrete is placed on site. Like to do.

また、鋼板に頭付きスタッド、孔あき鋼板ジベル、鋼管ジベル、形鋼シアコネクタ等を取り付けることにより、底鋼板とコンクリートのずれ止めを図るようにしている。すなわち、底鋼板とコンクリートの一体性を高め、効果的に応力伝達を図るようにしている。   In addition, the bottom steel plate and the concrete are prevented from slipping by attaching a headed stud, a perforated steel plate gibel, a steel pipe gibel, a shape steel shear connector, or the like to the steel plate. In other words, the integrity of the bottom steel plate and the concrete is improved, and the stress is transmitted effectively.

特開２００７−０２３７１４号公報JP 2007-023714 A

しかしながら、従来の合成床版においては、底鋼板がコンクリート打込み時の型枠を兼ねることから、新設構造物の施工において工期短縮を図ることができるが、単位体積重量がＲＣ構造よりも大きくなる。例えば一般部の単位体積重量は２７．５ｋＮ／ｍ３程度であり、ＲＣ構造の２４．５ｋＮ／ｍ３よりも大きくなる。 However, in the conventional composite floor slab, since the bottom steel plate also serves as a formwork for placing concrete, the construction period can be shortened in the construction of the new structure, but the unit volume weight is larger than that of the RC structure. For example unit weight of the general portion is about 27.5kN / m 3, is larger than the 24.5kN / m 3 of RC structures.

このように軽量化を実現できていないために合成床版をプレキャスト化しても単位体積重量が大きいため、部材寸法を小さくする必要があり、小さい部材を多く組み合わせて床版を構成するため、施工手間が増え、コストも高くなるという問題があった。   Since the weight reduction is not realized in this way, even if the composite floor slab is precast, the unit volume weight is large, so it is necessary to reduce the member dimensions, and the floor slab is composed of many small members. There was a problem that the labor and time were increased and the cost was increased.

本発明は、上記事情に鑑み、軽量化を図り、部材を大型化し、施工手間を減少させ、コストダウンを可能にする合成床版を提供することを目的とする。   In view of the above circumstances, an object of the present invention is to provide a composite floor slab capable of reducing the weight, increasing the size of a member, reducing labor, and reducing the cost.

上記の目的を達するために、この発明は以下の手段を提供している。   In order to achieve the above object, the present invention provides the following means.

本発明の合成床版は、底鋼板の上方にコンクリートを打設し、前記底鋼板と前記コンクリートを一体成形してなる合成床版において、前記底鋼板の前記コンクリートを打設する側の内面側に、複数の管状部材を組み付けてなる中空構造体を一体に固着して構成されていることを特徴とする。   The composite floor slab of the present invention is a composite floor slab formed by casting concrete above a bottom steel plate and integrally molding the bottom steel plate and the concrete, and an inner surface side of the bottom steel plate on which the concrete is placed Further, a hollow structure formed by assembling a plurality of tubular members is integrally fixed.

また、本発明の合成床版において、前記環状部材は格子状に組み付けてなることが望ましい。   In the composite floor slab of the present invention, the annular member is preferably assembled in a lattice shape.

さらに、本発明の合成床版において、前記環状部材は鋼管と鋼板を格子状に組み付けてなることが望ましい。   Furthermore, in the composite floor slab of the present invention, the annular member is preferably formed by assembling steel pipes and steel plates in a lattice shape.

また、本発明の合成床版においては、前記コンクリートが繊維補強コンクリートであることが望ましい。   In the composite slab of the present invention, the concrete is preferably fiber reinforced concrete.

本発明の合成床版においては、底鋼板の内面に複数の管状部材を組み付けてなる中空構造体が取り付けられていることによって、平板の底鋼板だけを用いた場合よりも中空構造体がある分、コンクリートの体積が減少し、軽量化を図ることができる。さらに、底鋼板の内面に中空構造体が一体に設けられていることで底鋼板側の剛性が高まり、平板の底鋼板だけを用いた場合に比べて鋼板の厚さを薄くすることができる。この点からも合成床版の軽量化を図ることができる。   In the composite floor slab of the present invention, the hollow structure formed by assembling a plurality of tubular members on the inner surface of the bottom steel plate is attached, so that there is a hollow structure than when only a flat bottom steel plate is used. The volume of the concrete can be reduced and the weight can be reduced. Furthermore, since the hollow structure is integrally provided on the inner surface of the bottom steel plate, the rigidity on the bottom steel plate side is increased, and the thickness of the steel plate can be reduced as compared with the case where only the flat bottom steel plate is used. From this point, the weight of the composite floor slab can be reduced.

よって、本発明の合成床版によれば、合成床版の軽量化を実現できることで部材を大型化し、施工手間を減少させ、コストダウンを達成することが可能になる。   Therefore, according to the composite floor slab of the present invention, the weight reduction of the composite floor slab can be realized, thereby increasing the size of the member, reducing the construction labor, and achieving cost reduction.

また、底鋼板の内面に中空構造体が一体に設けられ、底鋼板の内面側に凹凸を形成することができ、コンクリートに食い込んだ中空構造体にずれ止めの機能を発揮させることができる。これにより、従来よりもずれ止めを簡略化することができる。すなわち、従来のように底鋼板に頭付きスタッド、孔あき鋼板ジベル、鋼管ジベル、形鋼シアコネクタ等を取り付けることなく、優れたずれ止め性能を付与することができる。   Moreover, a hollow structure body is integrally provided on the inner surface of the bottom steel plate, and irregularities can be formed on the inner surface side of the bottom steel plate, so that the hollow structure body biting into the concrete can exhibit a function of preventing slippage. As a result, it is possible to simplify the displacement prevention as compared with the prior art. That is, it is possible to provide excellent slip prevention performance without attaching a headed stud, a perforated steel plate gibel, a steel pipe gibel, a shape steel shear connector or the like to the bottom steel plate as in the prior art.

本発明の一実施形態に係る合成床版を示す斜視図である。It is a perspective view which shows the synthetic floor slab which concerns on one Embodiment of this invention. 本発明の一実施形態に係る合成床版を示す断面図である。It is sectional drawing which shows the synthetic floor slab which concerns on one Embodiment of this invention. 本発明の一実施形態に係る合成床版の変更例を示す斜視図である。It is a perspective view which shows the example of a change of the synthetic floor slab which concerns on one Embodiment of this invention.

以下、図１から図３を参照し、本発明の一実施形態に係る合成床版について説明する。なお、本実施形態は、道路橋や鉄道橋の合成床版に関し、従来よりも軽量化を可能にした合成床版に関するものである。   Hereinafter, a synthetic floor slab according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. The present embodiment relates to a composite floor slab of a road bridge or a railway bridge, and relates to a composite floor slab that can be made lighter than before.

本実施形態の合成床版Ａは、図１及び図２に示すように、底鋼板１を型枠とし、その上方（内部）にコンクリート２を打設充填し、底鋼板１とコンクリート２を一体成形して構成されている。   As shown in FIGS. 1 and 2, the composite floor slab A of this embodiment uses a bottom steel plate 1 as a formwork, casts and fills concrete 2 above (inside), and integrates the bottom steel plate 1 and concrete 2. It is formed by molding.

また、本実施形態の合成床版Ａにおいては、底鋼板１のコンクリート２を打設する側の内面側に、例えば複数の角鋼管（管状部材）３を格子状に組み付けてなる中空構造体４を配置し、引張側の鋼材を底鋼板１と中空構造体４のみとして構成されている。
なお、合成床板Ａの中空構造体４は、例えば、図３に示すように、複数の角鋼管（管状部材）３と鋼板５を格子状に組み付けて構成されていてもよい。 Moreover, in the composite floor slab A of this embodiment, the hollow structure 4 formed by assembling a plurality of square steel pipes (tubular members) 3 in a lattice shape, for example, on the inner surface side of the bottom steel plate 1 where the concrete 2 is placed. The steel material on the tension side is configured only as the bottom steel plate 1 and the hollow structure 4.
In addition, the hollow structure 4 of the synthetic floor board A may be configured by, for example, assembling a plurality of square steel pipes (tubular members) 3 and steel plates 5 in a lattice shape as shown in FIG.

また、中空構造体４を底鋼板１の内面に溶接することで、底鋼板１（底鋼板１と中空構造体４の一体構造部）側の剛性が所望の剛性に高められている。   Further, by welding the hollow structure 4 to the inner surface of the bottom steel plate 1, the rigidity on the bottom steel plate 1 (an integral structure portion of the bottom steel plate 1 and the hollow structure 4) side is increased to a desired rigidity.

なお、中空構造体４は、複数の管状部材３を組み付けて形成されていればよく、必ずしも本実施形態のように格子状に形成されていなくてもよい。   The hollow structure 4 only needs to be formed by assembling a plurality of tubular members 3, and does not necessarily have to be formed in a lattice shape as in the present embodiment.

そして、上記構成からなる底鋼板１の上方にコンクリート２を打設／充填するとともに、底鋼板１に取り付けた中空構造体４がコンクリート２に貫入した状態で底鋼板１とコンクリート２が一体化し、本実施形態の合成床版Ａが製作される。   And while placing / filling concrete 2 above bottom steel plate 1 which consists of the above composition, bottom steel plate 1 and concrete 2 are united in the state where hollow structure 4 attached to bottom steel plate 1 penetrates into concrete 2, The composite floor slab A of this embodiment is manufactured.

これにより、本実施形態の合成床版Ａにおいては、引張側の鋼材を底鋼板１と中空構造体４のみとし、別途引張側の鋼材を設ける必要がないため、また、中空構造体４の分、コンクリート２の体積が減少するため、軽量化を図ることができる。   Thereby, in the composite floor slab A of this embodiment, since the steel material on the tension side is only the bottom steel plate 1 and the hollow structure body 4 and there is no need to separately provide the steel material on the tension side, Since the volume of the concrete 2 is reduced, the weight can be reduced.

さらに、底鋼板１に中空構造体２が取り付けられることで底鋼板１側の剛性が高まり、平板に比べて鋼板の厚さを薄くすることができる。この点からも合成床版Ａの軽量化を図ることができる。   Furthermore, the rigidity by the side of the bottom steel plate 1 increases by attaching the hollow structure 2 to the bottom steel plate 1, and the thickness of the steel plate can be reduced as compared with a flat plate. Also from this point, the weight reduction of the composite floor slab A can be achieved.

このように合成床版Ａの軽量化を実現できることから、本実施形態の合成床版Ａにおいては、部材を大型化し、施工手間を減少させ、コストダウンを達成することが可能となる。   Since the weight reduction of the composite floor slab A can be realized in this way, in the composite floor slab A of the present embodiment, it is possible to increase the size of the member, reduce the labor for construction, and achieve cost reduction.

また、底鋼板１に中空構造体４が取り付けられ、この中空構造体４がコンクリート２に食い込んでずれ止めの機能を発揮することから、ずれ止めを簡略化することができる。すなわち、従来のように底鋼板に頭付きスタッド、孔あき鋼板ジベル、鋼管ジベル、形鋼シアコネクタ等を取り付けることなく、優れたずれ止め性能を付与することができる。   Moreover, since the hollow structure 4 is attached to the bottom steel plate 1 and this hollow structure 4 bites into the concrete 2 and exhibits the function of preventing the displacement, the displacement prevention can be simplified. That is, it is possible to provide excellent slip prevention performance without attaching a headed stud, a perforated steel plate gibel, a steel pipe gibel, a shape steel shear connector or the like to the bottom steel plate as in the prior art.

ここで、本実施形態の合成床版Ａにおいては、コンクリート２として繊維補強コンクリートを用いてもよい。この場合には、圧縮側の鉄筋を省略することが可能になり、配筋作業の合理化・省力化を図ることができる。また、繊維補強コンクリートを用いることで、床版厚さを薄くすることができる。よって、さらなる合成床版Ａの軽量化を実現することが可能になる。   Here, in the composite floor slab A of the present embodiment, fiber reinforced concrete may be used as the concrete 2. In this case, it is possible to omit the rebar on the compression side, and rationalization and labor saving of the bar arrangement work can be achieved. Moreover, the floor slab thickness can be reduced by using fiber reinforced concrete. Therefore, further weight reduction of the composite floor slab A can be realized.

以上、本発明に係る合成床版の一実施形態について説明したが、本発明は上記の実施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 one embodiment of the synthetic floor slab according to the present invention has been described, the present invention is not limited to the above embodiment, and can be appropriately changed without departing from the scope of the present invention.

１ 底鋼板
２ コンクリート（繊維補強コンクリート）
３ 管状部材
４ 中空構造体
５ 鋼板
Ａ 合成床版 1 Bottom steel plate 2 Concrete (fiber reinforced concrete)
3 Tubular member 4 Hollow structure 5 Steel plate A Synthetic floor slab

Claims (4)

底鋼板の上方にコンクリートを打設し、前記底鋼板と前記コンクリートを一体成形してなる合成床版において、
前記底鋼板の前記コンクリートを打設する側の内面側に、複数の管状部材を組み付けてなる中空構造体を一体に固着して構成されていることを特徴とする合成床版。 In the composite floor slab formed by casting concrete above the bottom steel plate and integrally molding the bottom steel plate and the concrete,
A composite slab comprising a hollow structure formed by assembling a plurality of tubular members integrally fixed to an inner surface side of the bottom steel plate on which the concrete is placed. 請求項１記載の合成床版において、
前記環状部材は格子状に組み付けてなることを特徴とする合成床版。 In the composite floor slab according to claim 1,
The synthetic floor slab, wherein the annular member is assembled in a lattice shape. 請求項１または請求項２に記載の合成床版において、
前記環状部材は鋼管と鋼板を格子状に組み付けてなることを特徴とする合成床版。 In the composite floor slab according to claim 1 or 2,
The said cyclic | annular member is a synthetic floor slab characterized by assembling | attaching a steel pipe and a steel plate in a grid | lattice form. 請求項１から請求項３のいずれか一項に記載の合成床版において、
前記コンクリートが繊維補強コンクリートであることを特徴とする合成床版。 In the synthetic floor slab according to any one of claims 1 to 3,
A synthetic floor slab, wherein the concrete is fiber reinforced concrete.
JP2016198358A 2016-10-06 2016-10-06 Synthetic floor slab Active JP6868994B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110777641A (en) * 2019-11-07 2020-02-11 湘潭大学 Multistage energy consumption bridge antidetonation dog convenient to maintain and change

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4313383A (en) * 1979-10-23 1982-02-02 Stephen Parazader Guideway units for elevated guideways
JP2004003290A (en) * 2002-04-26 2004-01-08 Kurimoto Ltd Structure for preventing slippage between steel and concrete, and steel/concrete composite plate
JP2004211367A (en) * 2002-12-27 2004-07-29 Sumitomo Heavy Ind Ltd Hollow composite floor slab using steel pipe
JP2015025330A (en) * 2013-07-29 2015-02-05 横河工事株式会社 Lightweight floor slab, lightweight floor slab construction method, and lightweight floor slab connection structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4313383A (en) * 1979-10-23 1982-02-02 Stephen Parazader Guideway units for elevated guideways
JP2004003290A (en) * 2002-04-26 2004-01-08 Kurimoto Ltd Structure for preventing slippage between steel and concrete, and steel/concrete composite plate
JP2004211367A (en) * 2002-12-27 2004-07-29 Sumitomo Heavy Ind Ltd Hollow composite floor slab using steel pipe
JP2015025330A (en) * 2013-07-29 2015-02-05 横河工事株式会社 Lightweight floor slab, lightweight floor slab construction method, and lightweight floor slab connection structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110777641A (en) * 2019-11-07 2020-02-11 湘潭大学 Multistage energy consumption bridge antidetonation dog convenient to maintain and change

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