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JP7227900B2 - deck plate - Google Patents
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JP7227900B2 - deck plate - Google Patents

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JP7227900B2
JP7227900B2 JP2019516841A JP2019516841A JP7227900B2 JP 7227900 B2 JP7227900 B2 JP 7227900B2 JP 2019516841 A JP2019516841 A JP 2019516841A JP 2019516841 A JP2019516841 A JP 2019516841A JP 7227900 B2 JP7227900 B2 JP 7227900B2
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deck plate
rib
curved
plate
concrete
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JPWO2018207338A1 (en
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晃司 沖
勝輝 関
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JFE Steel Corp
JFE Metal Products and Engineering Inc
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JFE Steel Corp
JFE Metal Products and Engineering Inc
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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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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Floor Finish (AREA)

Description

本発明は、床構造物や天井構造物の構築に用いるデッキプレートに関する。 The present invention relates to a deck plate used for constructing floor structures and ceiling structures.

建物の床構造体や天井構造体を構築する際に、デッキプレートが広く用いられている。デッキプレートは、梁間に架け渡されるように設置されており、デッキプレートの両端部が梁の上面に固定されている。デッキプレートを固定した後、デッキプレートの上にはコンクリートが打設され、コンクリートが固化することにより、床構造体または天井構造体が構築される。
デッキプレートは、薄板材からロール成形によって金属板に曲げ加工を施すことで形成される。デッキプレートは、一枚の薄板材から成形された剛性を高めるためのリブが形成されている（例えば、特許文献１参照）。
デッキプレートの上面は平坦であるため、床構造体または天井構造体の下面との境界面（当接面）には抵抗力がない。よって、デッキプレートは、型枠材としてコンクリート固化までの荷重に耐えうる剛性を有するものとして用いられている。デッキプレートはコンクリート固化後、取り外すことが不可能なため残置される。Deck plates are widely used in constructing floor structures and ceiling structures of buildings. The deck plate is installed so as to span between the beams, and both ends of the deck plate are fixed to the upper surfaces of the beams. After fixing the deck plate, concrete is placed on the deck plate and solidified to construct a floor structure or a ceiling structure.
The deck plate is formed by bending a metal plate from a thin plate material by roll forming. The deck plate is formed from a single sheet of thin plate material and has ribs formed thereon for enhancing rigidity (see, for example, Patent Document 1).
Since the upper surface of the deck plate is flat, there is no resistance at the interface (abutment surface) with the lower surface of the floor structure or ceiling structure. Therefore, the deck plate is used as a formwork material having a rigidity capable of withstanding the load until the concrete solidifies. After the concrete hardens, the deck plate is left in place because it cannot be removed.

特開平７－２３８６２１号公報JP-A-7-238621

ところで、床構造体または天井構造体には、地震荷重のような水平荷重が作用するため、その荷重に耐えうる構造を求められることがあるが、デッキプレートは、構造体との境界に抵抗力を有しないため、残置されていても水平荷重に対して抵抗する機能はほとんどない。
また、デッキプレートは、薄板材を大きく曲げ加工することで形成されるが、デッキプレートの剛性を保持し、ロール成形工程の効率化を図るためには、最適な曲げ半径を規定する必要がある。例えば、図４に示すように、曲げ加工により形成されるリブ１０１の湾曲部１０２の曲げ半径Ｒ１を大きくすると、ロール成形が容易になるため、ロール成形工程の効率化を図ることができ、ロール成形機のメンテナンスも容易となる。また、リブの形成により剛性評価に考慮できるリブからの有効幅Ｗが湾曲部１０２の端部、すなわち、湾曲部１０２と平坦部１０３との境界部１０４からＷ＝５０ｔ／２（ｔは板厚）の範囲となるため、剛性評価に際しての有効幅を広くとることができる。By the way, horizontal loads such as seismic loads are applied to floor structures and ceiling structures, and structures that can withstand these loads are sometimes required. , it has almost no ability to resist horizontal loads even if left in place.
In addition, the deck plate is formed by bending a thin sheet material, and in order to maintain the rigidity of the deck plate and improve the efficiency of the roll forming process, it is necessary to specify the optimum bending radius. . For example, as shown in FIG. 4, when the bending radius R1 of the curved portion 102 of the rib 101 formed by bending is increased, roll forming becomes easier, so that the roll forming process can be made more efficient. Maintenance of the molding machine is also facilitated. In addition, the effective width W from the rib that can be considered for the rigidity evaluation due to the formation of the rib is W = 50 t/2 (t is the plate thickness ), a wide effective width can be secured for the stiffness evaluation.

しかし、曲げ加工により形成されるリブ１０１の湾曲部１０２の曲げ半径Ｒ１を大きくしすぎると、曲げ加工の湾曲部１０２によって形成される窪み１０５が大きくなる。これにより、窪み１０５に充填されるコンクリートの量が増加し、床構造体（天井構造体）の重量の増加、コンクリート材料の増加を招く。
一方、図５に示すように、曲げ加工により形成されるリブ２０１の湾曲部２０２の曲げ半径Ｒ２を小さくすると、ロール成形工程での曲げ加工が困難となり、ロール成形工程の効率化を図ることができず、ロール成形機のメンテナンスも煩雑となる。However, if the bending radius R1 of the curved portion 102 of the rib 101 formed by bending is made too large, the recess 105 formed by the curved portion 102 formed by bending becomes large. As a result, the amount of concrete filled in the depression 105 increases, resulting in an increase in weight of the floor structure (ceiling structure) and an increase in the amount of concrete material.
On the other hand, as shown in FIG. 5, if the bending radius R2 of the curved portion 202 of the rib 201 formed by bending is reduced, the bending in the roll forming process becomes difficult, and the efficiency of the roll forming process can be improved. In addition, the maintenance of the roll forming machine becomes complicated.

そこで、本発明は、上記課題に鑑みてなされたものであり、床構造体または天井構造体に作用する水平荷重に対して抵抗できる機能を有し、最適な曲げ半径で形成されたリブを有するデッキプレートを提供することを目的とする。 Therefore, the present invention has been made in view of the above problems, and has a function of resisting a horizontal load acting on a floor structure or a ceiling structure, and has a rib formed with an optimum bending radius. The purpose is to provide a deck plate.

上記の課題を解決するため、本発明は、金属板から形成され、梁間に架け渡されるデッキプレートであって、平坦部と、前記平坦部に連続して形成され、前記平坦部の一方の面において、互いに間隔をあけて懸架方向に沿って一端から他端にわたって延在するリブと、前記リブの両端部が前記一方の面に対して直角方向に潰されたエンドクローズ部と、を備え、前記リブは、前記平坦部との境界に、湾曲形成された湾曲部を有することを特徴とする。 In order to solve the above-mentioned problems, the present invention provides a deck plate formed of a metal plate and spanned between beams, comprising a flat portion and a flat portion continuously formed on one side of the flat portion. , ribs extending from one end to the other end along the suspension direction at intervals, and an end closed portion in which both ends of the rib are crushed in a direction perpendicular to the one surface, The rib is characterized by having a curved portion at a boundary with the flat portion.

また、前記湾曲部は、曲げ半径Ｒが６ｍｍ～１０ｍｍであることが好ましい。 Further, it is preferable that the curved portion has a bending radius R of 6 mm to 10 mm.

また、前記リブは、前記湾曲部に連続し、前記平坦部の面方向に交差する方向に沿って延びる直線部を有し、前記直線部には、折り返された一対の金属板を拘束する拘束部が形成されており、前記拘束部は、前記湾曲部と前記直線部との境界から少なくとも５ｍｍ以上離れた位置に形成されていることが好ましい。 Further, the rib has a linear portion continuous with the curved portion and extending along a direction intersecting the plane direction of the flat portion, and the linear portion has a restraining structure that restrains the pair of folded metal plates. A portion is formed, and the restraining portion is preferably formed at a position separated by at least 5 mm from the boundary between the curved portion and the straight portion.

また、前記拘束部は、カシメられていることが好ましい。 Moreover, it is preferable that the restraining portion is crimped.

本発明によれば、床構造体または天井構造体に作用する水平荷重に対して抵抗できる機能を有し、最適な曲げ半径で形成されたリブを有するデッキプレートを製造できる。 According to the present invention, it is possible to manufacture a deck plate having ribs formed with an optimum bending radius and having a function of resisting horizontal loads acting on a floor structure or a ceiling structure.

梁間に設置されたデッキプレートを示す図である。It is a figure which shows the deck plate installed between the beams. デッキプレートの斜視図である。It is a perspective view of a deck plate. 上面にコンクリートが打設されたリブの断面図である。FIG. 4 is a cross-sectional view of a rib with concrete placed on the upper surface; リブの湾曲部の曲げ半径を大きくしたときの問題点を説明するリブの断面図である。FIG. 5 is a cross-sectional view of a rib for explaining problems when the bending radius of the curved portion of the rib is increased; リブの湾曲部の曲げ半径を小さくしたときの問題点を説明するリブの断面図である。FIG. 10 is a cross-sectional view of a rib for explaining problems when the bending radius of the curved portion of the rib is reduced;

本発明の好ましい実施の形態について、図面を参照しながら説明する。なお、以下に示す実施の形態は一例であり、本発明の範囲において、種々の実施の形態をとりうる。 Preferred embodiments of the present invention will be described with reference to the drawings. It should be noted that the embodiment shown below is an example, and various embodiments can be made within the scope of the present invention.

図１は、梁間に設置されたデッキプレートを示す図である。図２は、デッキプレートの斜視図である。図３は、上面にコンクリートが打設されたリブの断面図である。
図１から図３に示すように、デッキプレート１０は、建物の床構造物３０（または天井構造物）を構築する際に打設されるコンクリートの型枠になるとともに、コンクリートの固化後も残置されるものである。FIG. 1 is a diagram showing a deck plate installed between beams. FIG. 2 is a perspective view of a deck plate. FIG. 3 is a cross-sectional view of a rib having concrete placed on the upper surface thereof.
As shown in FIGS. 1 to 3, the deck plate 10 serves as a formwork for concrete that is cast when constructing a floor structure 30 (or a ceiling structure) of a building, and is left after the concrete has solidified. It is what is done.

＜デッキプレートの構成＞
図１に示すように、デッキプレート１０は、対向する梁２０間に架け渡されている。デッキプレート１０は、一端が一方の梁２０に載置され、溶接等によって梁２０に固定されており、他端が他方の梁２０に載置され、溶接等によって梁２０に固定されている。具体的に、梁２０は、例えば、Ｈ形鋼によって構成されており、デッキプレート１０の各端部はそれぞれの梁２０を構成するＨ形鋼のフランジ部に載置され、固定されている。<Structure of deck plate>
As shown in FIG. 1, the deck plate 10 spans between beams 20 facing each other. The deck plate 10 has one end placed on one beam 20 and fixed to the beam 20 by welding or the like, and the other end placed on the other beam 20 and fixed to the beam 20 by welding or the like. Specifically, the beams 20 are made of, for example, H-shaped steel, and each end of the deck plate 10 is placed on and fixed to the flange portion of the H-shaped steel that constitutes each beam 20 .

図２、図３に示すように、デッキプレート１０は、亜鉛メッキ等のメッキ処理が施された薄板状の鋼板から形成されている。デッキプレート１０は、平板状の鋼板をロール成形機によってロール成形することにより製造される。デッキプレート１０は、ロール成形機によって複数の箇所で曲げ加工が施される。
デッキプレート１０は、リブ１と、平坦部２と、エンドクローズ部３と、突条部４と、を備えている。As shown in FIGS. 2 and 3, the deck plate 10 is made of a thin steel plate that has been plated with zinc or the like. The deck plate 10 is manufactured by roll forming a flat steel plate with a roll forming machine. The deck plate 10 is bent at a plurality of locations by a roll forming machine.
The deck plate 10 includes ribs 1 , flat portions 2 , end closed portions 3 and ridges 4 .

リブ１は、鋼板が曲げ加工されることによって形成されている。図３に示すように、リブ１は、鋼板の一方の面側に折り曲げられた湾曲部１１と、湾曲部１１に連続し、面方向が平坦部２に直交する方向に延在する直線部１２と、直線部１２に連続し、二回にわたって湾曲されて折り返された折返部１３と、折返部１３に連続し、面方向が直線部１２に沿うように延在する直線部１４と、直線部１４に連続し、平坦部２に向かって折り曲げられた湾曲部１５と、を有している。 The rib 1 is formed by bending a steel plate. As shown in FIG. 3, the rib 1 includes a curved portion 11 bent toward one side of the steel plate, and a straight portion 12 continuous with the curved portion 11 and extending in a direction orthogonal to the flat portion 2. , a folded portion 13 that is continuous with the straight portion 12 and is bent and folded twice, a straight portion 14 that is continuous with the folded portion 13 and extends along the straight portion 12 in the surface direction, and a straight portion and a curved portion 15 that is continuous with 14 and is bent toward the flat portion 2 .

湾曲部１１と湾曲部１５は、その曲げ半径Ｒが６ｍｍ～１０ｍｍの範囲内となるように形成されている。これは、床構造物３０（天井構造物）の下面とデッキプレート１０とを係合させるために湾曲部１１，１５との間に形成される必要な深さを有する空間（窪み）を形成することができ、ロール成形による曲げ加工が比較的容易であるからである。デッキプレート１０の上面に打設されたコンクリートは、湾曲部１１と湾曲部１５との間の窪みに流れ込み、固化することによって床構造物３０の下面から突出する突起となり、デッキプレート１０との係合部Eを形成する。 The curved portion 11 and the curved portion 15 are formed so that the bending radius R is within the range of 6 mm to 10 mm. This creates a space (recess) with the required depth formed between the bends 11, 15 to engage the underside of the floor structure 30 (ceiling structure) and the deck plate 10. This is because the bending process by roll forming is relatively easy. Concrete placed on the upper surface of the deck plate 10 flows into the depression between the curved portion 11 and the curved portion 15 and solidifies to form projections protruding from the lower surface of the floor structure 30 and engage with the deck plate 10. Form a joint E.

直線部１２と直線部１４は、互いの面同士が当接するように形成され、カシメ加工等によって連結され、拘束部１８を形成している。これによって、直線部１２と直線部１４とが離れないように拘束されるため、デッキプレート１０は断面形状を保持することができ、所定の荷重に耐えることが可能となる。ここで、拘束部１８は、湾曲部１１，１５と直線部１２，１４との境界Aから少なくとも５ｍｍ以上離れた位置に形成されている。すなわち、境界Aから拘束部１８（カシメ部）の上端部Bまでの距離Lが５ｍｍ以上となるように、直線部１２と直線部１４がカシメられて連結されている。
折返部１３は、直線部１２と直線部１４とが当接するよう、始点と終点が隣接するように折り返されており、断面視略三角形状の空間Sを形成する。The linear portion 12 and the linear portion 14 are formed such that their surfaces are in contact with each other, and are connected by caulking or the like to form a restraining portion 18 . As a result, the straight portion 12 and the straight portion 14 are restrained so as not to separate from each other, so that the deck plate 10 can maintain its cross-sectional shape and can withstand a predetermined load. Here, the restraining portion 18 is formed at a position separated by at least 5 mm or more from the boundary A between the curved portions 11 and 15 and the straight portions 12 and 14 . That is, the linear portions 12 and 14 are crimped and connected so that the distance L from the boundary A to the upper end portion B of the restraining portion 18 (crimped portion) is 5 mm or more.
The folded portion 13 is folded so that the start point and the end point are adjacent to each other so that the straight portion 12 and the straight portion 14 are in contact with each other, forming a space S having a substantially triangular cross-sectional view.

リブ１は、デッキプレート１０の幅方向（短手方向）に沿って所定の間隔をあけて複数形成されている。リブ１は、デッキプレート１０の長さ方向（長手方向）に沿って延在するように形成されている。すなわち、リブ１は、梁２０への懸架方向に沿って一端から他端にわたって連続して形成されている。 A plurality of ribs 1 are formed at predetermined intervals along the width direction (transverse direction) of the deck plate 10 . Rib 1 is formed to extend along the length direction (longitudinal direction) of deck plate 10 . That is, the rib 1 is continuously formed from one end to the other end along the suspension direction of the beam 20 .

平坦部２は、デッキプレート１０において曲げ加工が施されていない部分である。すなわち、平坦部２は、隣接するリブ１に挟まれた部分である。デッキプレート１０において、各平坦部２は、同一平面上に形成されている。 The flat portion 2 is a portion of the deck plate 10 that is not bent. That is, the flat portion 2 is a portion sandwiched between adjacent ribs 1 . In the deck plate 10, each flat portion 2 is formed on the same plane.

エンドクローズ部３は、デッキプレート１０の長さ方向（長手方向）の両端部に形成されている。エンドクローズ部３は、リブ１の両端部がデッキプレート１０の面に対して直角方向に潰されることによって形成されている。これにより、リブ１は、両端部のエンドクローズ部３が押し潰された断面に形成されており、エンドクローズ部３に挟まれた他の部分は断面視略三角形状に形成されている。その結果、リブ１の両端部は、他の部分よりも高さが低くなるため、梁２０のフランジ部上面に載置することができる。エンドクローズ部３は、リブ１の延在方向に沿った長さが梁２０のフランジ部上面に載置する長さよりも長くなるように形成されている。 The end closed portions 3 are formed at both ends of the deck plate 10 in the lengthwise direction (longitudinal direction). The end closed portion 3 is formed by crushing both ends of the rib 1 in a direction perpendicular to the plane of the deck plate 10 . As a result, the rib 1 is formed in a cross section in which the closed end portions 3 at both ends are crushed, and the other portion sandwiched between the closed end portions 3 is formed in a substantially triangular cross-sectional view. As a result, both ends of the rib 1 are lower in height than other portions, so that they can be placed on the top surface of the flange portion of the beam 20 . The end closed portion 3 is formed so that the length along the extending direction of the rib 1 is longer than the length of the beam 20 placed on the upper surface of the flange portion.

突条部４は、各平坦部２に形成されている。突条部４は、例えば、エンボス加工によって形成されており、デッキプレート１０においてリブ１とは反対側に突出するように形成されている。突条部４は、リブ１の延在方向に直交する方向、すなわち、デッキプレート１０の幅方向（短手方向）に沿って延在している。突条部４は、リブ１の延在方向、すなわち、デッキプレート１０の長さ方向（長手方向）に沿って所定間隔をあけて複数形成されている。 A ridge portion 4 is formed on each flat portion 2 . The ridges 4 are formed by, for example, embossing, and are formed to protrude on the opposite side of the ribs 1 on the deck plate 10 . The ridges 4 extend in a direction perpendicular to the extending direction of the ribs 1 , that is, along the width direction (transverse direction) of the deck plate 10 . A plurality of protrusions 4 are formed at predetermined intervals along the extending direction of the rib 1, that is, along the length direction (longitudinal direction) of the deck plate 10. As shown in FIG.

以上のように、デッキプレート１０は、金属板から形成されているので、下方からの支持が不要となり、下方の空間を有効に利用できる。また、デッキプレート１０は、両端部にエンドクローズ部３を有しているので、梁２０の上面に載置することができる。また、デッキプレート１０と梁２０の型枠との間にコンクリートの漏れを防ぐ部材を設ける必要がなくなる。ＲＣ造の場合、梁２０にエンドクローズ部３の一部を食い込ませることができるので、デッキプレート１０の脱落防止効果を高めることができる。
また、デッキプレート１０のリブ１は、平坦部２との境界に、曲げ半径Ｒ＝６ｍｍ～１０ｍｍの範囲内で形成された湾曲部１１，１５を有しているので、極度に曲げ半径が小さいものではなく、ロール成形が容易となり、ロール成形工程の効率化を図ることができ、ロール成形機のメンテナンスも容易となる。As described above, since the deck plate 10 is formed of a metal plate, it does not require support from below, and the space below can be effectively used. In addition, since the deck plate 10 has end closed portions 3 at both ends, it can be placed on the upper surfaces of the beams 20 . Moreover, it is not necessary to provide a member for preventing leakage of concrete between the deck plate 10 and the formwork of the beam 20. - 特許庁In the case of the RC construction, the beam 20 can partially bite into the end closed portion 3, so that the effect of preventing the deck plate 10 from falling off can be enhanced.
In addition, since the rib 1 of the deck plate 10 has curved portions 11 and 15 formed within a range of bending radius R = 6 mm to 10 mm at the boundary with the flat portion 2, the bending radius is extremely small. Roll forming becomes easier, the efficiency of the roll forming process can be improved, and the maintenance of the roll forming machine becomes easier.

また、デッキプレート１０にコンクリートを打設した際、湾曲部１１と湾曲部１５との間に形成される窪みに入り込んで固化したコンクリートは、床構造物３０の下面から突出する係合部Eとなってデッキプレート１０に係合するので、床構造物３０に地震などの水平力が作用した場合でも、床構造物３０の下部の係合部Eがデッキプレート１０に係合されて床構造物３０の剛性を高めることができる。ここで、湾曲部１１，１５の曲げ半径Ｒを、Ｒ＝６ｍｍ～１０ｍｍの範囲内で形成することにより、係合部Eとデッキプレート１０とを係合するために必要な深さを形成することができる。
さらに、突条部４は、係合部Ｅの延在方向に直交する方向に沿って所定間隔をあけて複数形成されているので、デッキプレート１０長さ方向に加え、幅方向においても床構造物３０の下部のコンクリートがデッキプレート１０の突条部４に係合されて床構造物３０の剛性を高めることができる。In addition, when concrete is poured into the deck plate 10, the concrete that has entered the depression formed between the curved portion 11 and the curved portion 15 and has solidified will form the engaging portion E that protrudes from the bottom surface of the floor structure 30. Therefore, even if horizontal force such as an earthquake acts on the floor structure 30, the lower engaging portion E of the floor structure 30 is engaged with the deck plate 10 and the floor structure 30 can be increased in stiffness. Here, the depth necessary for engaging the engaging portion E and the deck plate 10 is formed by forming the bending radius R of the curved portions 11 and 15 within the range of R=6 mm to 10 mm. be able to.
Furthermore, since a plurality of ridges 4 are formed at predetermined intervals along the direction orthogonal to the extending direction of the engaging portion E, the floor structure is formed not only in the longitudinal direction of the deck plate 10 but also in the width direction. The concrete under the object 30 can be engaged with the ridges 4 of the deck plate 10 to increase the rigidity of the floor structure 30 .

また、リブ１の形成により剛性評価に考慮できるリブ１の中心（すなわち、直線部１２と直線部１４との当接部）からの有効幅Ｗが湾曲部１１，１５の端部、すなわち、湾曲部１１，１５と平坦部２との境界部１６からＷ＝５０ｔ／２（ｔは板厚）の範囲となるため、剛性評価に際しての有効幅を広くとることができる。
また、湾曲部１１，１５によって形成される係合部Eが大きくなりすぎると、コンクリート打設時に係合部Eを形成するためのコンクリートの量が大幅に増加し、床構造物３０（または天井構造物）の重量の大幅な増加、コンクリート材料の大幅な増加に繋がるが、係合部Eが曲げ半径Ｒ＝６ｍｍ～１０ｍｍの範囲内の湾曲部１１，１５で形成される場合はその影響は少なくなる。In addition, the effective width W from the center of the rib 1 (that is, the contact portion between the straight portion 12 and the straight portion 14) that can be taken into consideration for the rigidity evaluation due to the formation of the rib 1 is the end portion of the curved portions 11 and 15, that is, the curved portion. Since the range is W=50t/2 (t is the plate thickness) from the boundary 16 between the portions 11, 15 and the flat portion 2, a wide effective width can be secured for the rigidity evaluation.
In addition, if the engagement portion E formed by the curved portions 11 and 15 becomes too large, the amount of concrete for forming the engagement portion E during concrete placement will increase significantly, and the floor structure 30 (or the ceiling structure) will increase. However, if the engagement portion E is formed of curved portions 11 and 15 with a bending radius R of 6 mm to 10 mm, the effect will be less.

さらには、曲げ半径Rが大きくなると、湾曲部１１，１５と直線部１２，１４との境界Aから拘束部１８（カシメ部）の上端部Bまでの距離Lが短くなり、直線部１２と直線部１４との拘束部１８にコンクリートに含まれる水分が漏れて、拘束部１８の錆や、リブ１内への水の浸入によってリブ１の錆を招くおそれがあるが、境界Aから拘束部１８（カシメ部）の上端部Bまでの距離Lを５ｍｍ以上としていれば、水の漏れも防止できて錆の発生を抑えることができる。 Furthermore, when the bending radius R increases, the distance L from the boundary A between the curved portions 11 and 15 and the straight portions 12 and 14 to the upper end portion B of the restraining portion 18 (crimped portion) decreases, and the straight portion 12 and the straight portion Moisture contained in the concrete leaks into the constraining portion 18 between the portion 14 and the constraining portion 18, and water entering the rib 1 may cause rusting of the rib 1. If the distance L to the upper end portion B (crimped portion) is set to 5 mm or more, it is possible to prevent water leakage and suppress the generation of rust.

＜その他＞
なお、本発明は、上記実施の形態に限られるものではない。例えば、折返部１３は、三角形状に限らず、直線部１２と直線部１４とが当接するように折り返されていれば、その折り曲げ形状は自由に変更可能である。
また、突条部４は、リブ１とは反対側の面に突出する場合に限らず、リブ１と同じ方向に突出するように形成してもよい。この場合、リブ１とは反対側の面から見れば、平坦部２に溝が形成されていることになる。<Others>
It should be noted that the present invention is not limited to the above embodiments. For example, the folded portion 13 is not limited to a triangular shape, and the folded shape can be freely changed as long as it is folded so that the straight portion 12 and the straight portion 14 are in contact with each other.
Moreover, the protrusion 4 may be formed so as to protrude in the same direction as the rib 1 instead of protruding in the opposite side of the rib 1 . In this case, when viewed from the side opposite to the rib 1, the flat portion 2 is formed with grooves.

１ リブ
２ 平坦部
３ エンドクローズ部
４ 突条部
１０ デッキプレート
１１ 湾曲部
１２ 直線部
１３ 折返部
１４ 直線部
１５ 湾曲部
１８ 拘束部（カシメ部）
２０ 梁
３０ 床構造物（天井構造物）
Ｒ 曲げ半径
E 係合部1 Rib 2 Flat portion 3 End closed portion 4 Rib portion 10 Deck plate 11 Curved portion 12 Straight portion 13 Folded portion 14 Straight portion 15 Curved portion 18 Restricted portion (crimped portion)
20 beams 30 floor structure (ceiling structure)
R bending radius
E engagement part

Claims (1)

金属板から形成され、梁間に架け渡されるデッキプレートであって、
平坦部と、
前記平坦部に連続して形成され、前記平坦部の一方の面において、前記デッキプレートの短手方向に沿って互いに間隔をあけて形成され、前記短手方向に直交する前記デッキプレートの長手方向に沿って一端から他端にわたって延在するリブと、
前記リブの両端部が前記一方の面に対して直角方向に潰されたエンドクローズ部と、を備え、
前記リブは、前記平坦部との境界に、湾曲形成された湾曲部を有し、
前記湾曲部は、曲げ半径Ｒが６ｍｍ～１０ｍｍであることを特徴とするデッキプレート。 A deck plate formed from a metal plate and spanned between beams,
a flat portion;
The deck plate is formed continuously with the flat portion, is formed on one surface of the flat portion at intervals along the short direction of the deck plate , and is perpendicular to the short direction of the deck plate in the longitudinal direction of the deck plate. a rib extending from one end to the other along
An end closed portion in which both ends of the rib are crushed in a direction perpendicular to the one surface,
The rib has a curved portion at the boundary with the flat portion,
The deck plate, wherein the curved portion has a bending radius R of 6 mm to 10 mm.
JP2019516841A 2017-05-12 2017-05-12 deck plate Active JP7227900B2 (en)

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JP2022051904A (en) * 2017-05-12 2022-04-01 Ｊｆｅスチール株式会社 Deck plate

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JPS5928409B2 (en) * 1981-10-16 1984-07-12 日本金属工業株式会社 Method of cold roll corner forming of stainless steel
JPS601809U (en) * 1983-06-20 1985-01-09 日本鋼管ライトスチ−ル株式会社 Deck plate for floorboards
JPS61106851A (en) * 1984-10-29 1986-05-24 日鐵建材工業株式会社 Reinforced concrete synthetic structural floor
JPH076260Y2 (en) * 1988-02-15 1995-02-15 植木鋼管株式会社 Deck plate
JP2736335B2 (en) * 1992-02-24 1998-04-02 日鐵建材工業株式会社 Flat deck plate end closing device
JPH06123153A (en) * 1992-10-12 1994-05-06 Nippon Steel Metal Prod Co Ltd End-blocked flat deck plate
JPH074619U (en) * 1993-06-23 1995-01-24 神鋼建材工業株式会社 Deck plate
JP2724329B2 (en) * 1994-02-28 1998-03-09 株式会社国元商会 Deck plate for slab formwork
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022051904A (en) * 2017-05-12 2022-04-01 Ｊｆｅスチール株式会社 Deck plate
JP7341265B2 (en) 2017-05-12 2023-09-08 Ｊｆｅスチール株式会社 deck plate

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