JP2017120014A

JP2017120014A - Flat deck and laying method of flat deck

Info

Publication number: JP2017120014A
Application number: JP2016151878A
Authority: JP
Inventors: 治彦中川; Haruhiko Nakagawa; 達竹田; Toru Takeda; 一朗赤丸; Ichirou Akamaru
Original assignee: Nippon Steel and Sumikin Metal Products Co Ltd
Current assignee: Nippon Steel Metal Products Co Ltd
Priority date: 2015-09-03
Filing date: 2016-08-02
Publication date: 2017-07-06
Anticipated expiration: 2036-08-02
Also published as: JP2021092148A; JP7261829B2; JP6856330B2

Abstract

PROBLEM TO BE SOLVED: To provide a flat deck which can be reduced in weight, and elongated in a span, and can cope with a high live load by devising to form a salient part which is effective for improving cross section performance at a plane part, and can be diverted (deformed) to an accessory which is suitable for continuous laying work by being merely cut along a span direction.SOLUTION: In a flat deck 10 in which a steel plate is roll-processed, and plane parts 1, 11 and leg ribs 2 are alternately continuously formed in a width direction, the plane parts 1, 11 have a first plane part 1 which is shifted to one end part in an axial direction, and second plane parts 11, 11 other than the first plane part, the first plane part 1 comprises a salient part 1a which is salient upwardly at its both end parts, and whose upper face is flat, the second plane parts 11, 11 comprise salient parts 11a which protrude upwardly at intermediate portions, and whose upper faces are flat, and the salient parts 1a, 11a which are arranged at the plane parts 1, 11 and whose heights of upper faces are flat are set substantially equal.SELECTED DRAWING: Figure 1

Description

この発明は、鋼板がロール成形加工されて幅方向に平面部と脚部リブとが交互に連続して形成されたフラットデッキの技術分野に属する。 The present invention belongs to the technical field of a flat deck in which a steel plate is roll-formed and flat portions and leg ribs are alternately and continuously formed in the width direction.

フラットデッキ（床型枠用鋼製デッキプレート）とは、一般に、鋼板がロール成形加工されて幅方向に平面部と脚部リブとが交互に連続して形成されたデッキプレートを云い、建築物のスラブ施工のための型枠として用いられ、長手方向（スパン方向）の両端部は、脚部リブを潰したエンドクローズ加工が施されている。
前記フラットデッキを実際に施工対象床に敷設する場合は、前記フラットデッキの幅方向端部の張り出した平面部の端部を下方に折り曲げて形成した差し込み部が、隣接する他のフラットデッキの対応する脚部リブに差し込まれて連続敷設されたり、前記フラットデッキのほか、前記フラットデッキをスパン方向に沿って切断したフラットデッキの役物（非標準品）も用いたりして敷設する（以上、特許文献１の［従来の技術］の項を参照）。 A flat deck (steel deck plate for floor formwork) is generally a deck plate in which a steel plate is roll-formed and flat portions and leg ribs are continuously formed in the width direction. It is used as a formwork for slab construction, and both ends in the longitudinal direction (span direction) are subjected to end-close processing in which leg ribs are crushed.
When the flat deck is actually laid on the floor to be constructed, the insertion portion formed by bending the end portion of the flat portion protruding in the width direction of the flat deck downward corresponds to the other adjacent flat deck. In addition to the flat deck, the flat deck is also laid by using a flat deck accessory (non-standard product) cut along the span direction. (Refer to [Prior Art] in Patent Document 1).

前記フラットデッキは、型枠大工等の熟練工や、原則として支保工を必要としないため、施工性、作業性に優れている利点がある一方、フラットデッキが圧縮を受ける部分の有効に作用する断面範囲は前記平面部（鋼板）厚さの約５０倍（脚部リブを中心にして左右の平面部端部の約２５倍ずつ）、すなわち一般的なフラットデッキの板厚が０．８ｍｍから１．６ｍｍで前記平面部の各幅寸が約２００ｍｍであるとすると、有効に作用する断面範囲は約４０ｍｍから約８０ｍｍであるため、断面性能が小さく、前記フラットデッキのスパン長や積載荷重の高さに制約を受ける課題があった。
前記フラットデッキのスパン長を大きくしたり、積載荷重を高くする最も簡易な方法は、フラットデッキに用いる鋼板の板厚を厚くすることであるが、近年要請される部材の軽量化に反する。特に、フラットデッキは非構造部材に属するので、重量増加は不合理に過ぎる。 Since the flat deck does not require skilled workers such as formwork carpenters or support work in principle, there is an advantage that it is excellent in workability and workability, while the cross section where the flat deck acts effectively on the part subjected to compression The range is about 50 times the plane part (steel plate) thickness (about 25 times the end of the left and right plane parts centering on the leg ribs), that is, the thickness of a general flat deck is 0.8 mm to 1 If the width dimension of the flat portion is about 200 mm at 6 mm, the effective cross-sectional area is about 40 mm to about 80 mm, so that the cross-sectional performance is small, and the flat deck span length and loading load are high. There was a problem subject to restrictions.
The simplest method of increasing the span length of the flat deck or increasing the load capacity is to increase the thickness of the steel plate used for the flat deck, but this is contrary to the recent demand for weight reduction of members. In particular, since the flat deck belongs to a non-structural member, the weight increase is too unreasonable.

そこで、前記フラットデッキの平面部にエンボスやリブを形成することにより、平面部の板厚を厚くすることなく断面性能を向上させる技術が種々開示されている（例えば、特許文献２、３を参照）。 Accordingly, various techniques for improving the cross-sectional performance without increasing the plate thickness of the flat portion by forming embossments and ribs on the flat portion of the flat deck have been disclosed (for example, see Patent Documents 2 and 3). ).

特開平７−２７９２９１号公報JP 7-279291 A 特開平７−２３８６２１号公報JP-A-7-238621 特開２０１２−１２７１００号公報JP 2012-127100 A

前記特許文献２、３に係るデッキプレートは、前記平面部にエンボスやリブを形成することにより、断面性能を向上させて、長スパン化・高積載荷重化を可能とする利点はあるものの、実際の施工対象床に敷設する場合に必須となる前記役物は、専用のものを別異に製造する必要がある等、不経済であった。
すなわち、前記特許文献２、３に係るデッキプレートは、前記フラットデッキを適正な幅寸でスパン方向に沿って切断した役物を用意しても、前記特許文献１の図１に示すような単純な平面に形成されていないが故に、デッキプレートと役物との重ね合わせ部が、エンボスやリブの凹凸部により干渉を生じてしまうため、敷設時の幅調整が困難となるほか、無理矢理に敷設できたとしても前記重ね合わせ部に生じた隙間から打設コンクリートが漏出する虞があった。 Although the deck plates according to Patent Documents 2 and 3 have the advantage of improving the cross-sectional performance by forming embossments and ribs in the flat portion, it is possible to increase the span and increase the load capacity. The above-mentioned accessory which is indispensable when laying on the floor subject to construction is uneconomical because it is necessary to manufacture a dedicated one separately.
In other words, the deck plate according to Patent Documents 2 and 3 is simple as shown in FIG. 1 of Patent Document 1 even if an accessory obtained by cutting the flat deck along the span direction with an appropriate width dimension is prepared. Since it is not formed on a flat surface, the overlapping part of the deck plate and the accessory causes interference due to the embossed and rib irregularities, making it difficult to adjust the width when laying, and forcibly laying Even if it could be done, there was a possibility that the cast concrete leaks from the gap generated in the overlapped portion.

要するに、エンボスやリブ等の断面性能を向上させる技術を付加することにより軽量化、長スパン化・高積載荷重化を可能とし、かつ、スパン方向に沿って切断するだけで連続敷設作業に好適な役物に転用（変形）可能なフラットデッキは、今のところ見当たらないのが実情である。 In short, by adding technology to improve the cross-sectional performance such as embossing and ribs, it is possible to reduce the weight, increase the span and increase the load capacity, and it is suitable for continuous laying work only by cutting along the span direction. The reality is that there is no flat deck that can be used (transformed) as an accessory.

本発明は、上述した背景技術の課題に鑑みて案出されたものであり、その目的とするところは、平面部に断面性能を向上させるのに効果的な突条部を形成させる等の工夫を施すことにより、軽量化、長スパン化、高積載荷重化を可能とし、かつ、スパン方向に沿って切断するだけで連続敷設作業に好適な役物に転用（変形）可能なフラットデッキを提供することにある。さらに言えば、ロール成形加工で幅寸（例えば１ｍ）が設定された鋼板から、いかにして効果的に断面性能を向上させ、適正な役物にも転用（変形）することが可能な断面形状（折曲形状）を本出願人が鋭意追究した結果、実現したフラットデッキを提供することにある。 The present invention has been devised in view of the problems of the background art described above, and the object of the present invention is to devise an effective method for forming a ridge portion effective for improving the cross-sectional performance on the flat surface portion. Provides a flat deck that can be diverted (deformed) into a suitable tool for continuous laying work by simply cutting along the span direction. There is to do. Furthermore, the cross-sectional shape that can effectively improve the cross-sectional performance from a steel sheet whose width dimension (for example, 1 m) is set by roll forming and can be diverted (deformed) to an appropriate accessory. As a result of the present applicants eagerly pursuing (bending shape), an object is to provide a flat deck realized.

上記背景技術の課題を解決するための手段として、請求項１に記載した発明に係るフラットデッキは、鋼板がロール成形加工されて幅方向に平面部と脚部リブとが交互に連続して形成されたフラットデッキであって、
前記平面部は、幅方向一端部寄りの第一平面部と、前記第一平面部以外の第二平面部とを備え、
前記第一平面部は、前記第一平面部の両端部が上方に突出する上面が平坦な突条部を備え、
前記第二平面部は、前記第二平面部の中間部が上方に突出する上面が平坦な突条部を備え、
前記各平面部に設けた前記上面が平坦な突条部は、略同等高さに設定されていることを特徴とする。 As a means for solving the problems of the background art, the flat deck according to the invention described in claim 1 is formed by alternately forming flat portions and leg ribs in the width direction by rolling a steel plate. A flat deck,
The flat portion includes a first flat portion near one end in the width direction and a second flat portion other than the first flat portion,
The first plane portion includes a ridge portion having a flat upper surface from which both end portions of the first plane portion protrude upward,
The second flat surface portion includes a protrusion having a flat upper surface from which an intermediate portion of the second flat surface portion protrudes upward,
The ridge portion having a flat upper surface provided on each of the planar portions is set to have substantially the same height.

請求項２に記載した発明に係るフラットデッキは、鋼板がロール成形加工されて幅方向に平面部と脚部リブとが交互に連続して形成されたフラットデッキにおいて、
前記平面部は、幅方向一端部寄りの第一平面部と、前記第一平面部に隣接する第三平面部と、前記第一平面部、前記第三平面部以外の第四平面部とを備え、
前記第一平面部と前記第三平面部は、各平面部の両端部が上方に突出する上面が平坦な突条部を備え、
前記第四平面部は、前記第四平面部の中間部が上方に突出する上面が平坦な突条部を備え、
前記各平面部に設けた前記上面が平坦な突条部は、略同等高さに設定されていることを特徴とする。 In the flat deck according to the invention described in claim 2, in the flat deck in which the steel plate is roll-formed and the flat portions and leg ribs are alternately and continuously formed in the width direction,
The plane portion includes a first plane portion near one end in the width direction, a third plane portion adjacent to the first plane portion, and a fourth plane portion other than the first plane portion and the third plane portion. Prepared,
The first flat surface portion and the third flat surface portion each include a ridge portion having a flat upper surface from which both end portions of each flat surface portion protrude upward.
The fourth plane part includes a ridge part having a flat upper surface from which an intermediate part of the fourth plane part projects upward,
The ridge portion having a flat upper surface provided on each of the planar portions is set to have substantially the same height.

請求項３に記載した発明は、請求項１又は２に記載したフラットデッキにおいて、前記平面部のうち、幅方向他端部寄りの平面部は、脚部リブのない張り出した第五平面部に置き換えられ、前記第五平面部は、前記第五平面部の中間部が上方に突出する上面が平坦な突条部を備え、前記第五平面部以外の各平面部は、左右対称形状とされていることを特徴とする。 According to a third aspect of the present invention, in the flat deck according to the first or second aspect, the flat portion near the other end in the width direction of the flat portion is an overhanging fifth flat portion having no leg rib. The fifth flat surface portion is provided with a ridge portion having a flat upper surface from which an intermediate portion of the fifth flat surface portion projects upward, and each flat surface portion other than the fifth flat surface portion has a bilaterally symmetric shape. It is characterized by.

請求項４に記載した発明は、請求項１〜３のいずれか１項に記載したフラットデッキにおいて、前記第一平面部を含むフラットデッキの役物は、前記第一平面部以外の平面部に形成した前記突条部の所定の位置で切断されて形成されることを特徴とする。 According to a fourth aspect of the present invention, in the flat deck according to any one of the first to third aspects, an accessory of the flat deck including the first flat surface portion is provided on a flat surface portion other than the first flat surface portion. It is formed by being cut at a predetermined position of the formed protrusion.

請求項５に記載した発明に係るフラットデッキの敷設方法は、前記フラットデッキに、前記フラットデッキとは別の前記フラットデッキの役物を一部重ね合わせて連続敷設するフラットデッキの敷設方法であって、
前記請求項１〜３のいずれか１項に記載のフラットデッキの前記第一平面部の幅方向一端部側の前記突条部の上面に、前記請求項４に記載のフラットデッキの役物の切断部における前記突条部を重ね合わせて敷設することを特徴とする。 The flat deck laying method according to the invention described in claim 5 is a flat deck laying method in which a part of the flat deck different from the flat deck is overlapped and continuously laid on the flat deck. And
5. The flat deck accessory according to claim 4, on an upper surface of the protruding portion on one end side in the width direction of the first flat portion of the flat deck according to claim 1. It is characterized in that the ridges in the cutting part are laid and overlapped.

（１）本発明に係るフラットデッキによれば、幅方向一端部側の平面部には突条部を左右にバランスよく２箇所形成し、他端部の平面部には突条部を中央部に大きく１箇所形成する等して実施することにより、フラットデッキ全体の断面性能を効果的に向上させることができる。また、座屈強度も効果的に向上させることで使用可能なスパンを大きくすることができる。
前記作用効果に伴い、従来のフラットデッキと同スパンで実施する場合は、従来のフラットデッキと比べ、フラットデッキ全体の重量を小さくできる等、施工性が向上する。
前記作用効果についてその一例を示すと、型枠の設計において、従来のフラットデッキでは、たわみ算定式に用いるたわみ係数Ｃを１．６として算定を行っているが、本出願人による試験によれば、前記特許文献３に係るエンボス付きのフラットデッキの１．６を低減（具体的には、Ｃ＝１．３３に低減）できることが判明し、その分、フラットデッキの使用可能なスパン長を大きくできることを既に確認している。なお、前記たわみ算定式は型枠の設計においてフラットデッキのたわみの算定を行う式であり、前記たわみ係数はフラットデッキが圧縮を受ける部分の有効に作用する断面範囲を考慮して、その断面性能の低下への影響を見込んだ補正係数である。したがって、前記たわみ係数Ｃを低減すればフラットデッキのたわみの算定値を低減でき、フラットデッキの使用可能なスパン長を大きくすることができる。
（２）本発明に係るフラットデッキの敷設方法によれば、図４Ａ、Ｂ等に段階的に示したように、その右端部の突条部の平坦部分（平坦部）を、先行して敷設されたフラットデッキ（又はフラットデッキの役物）の突条部の平坦部分（平坦部）の上面に載せると、前記平坦部の平面同士を重ね合わせることが可能となるので、その後は前記平坦部の幅寸の広い領域で柔軟性（自在性）に富む幅調整作業を行うことができ、ひいては連続敷設作業を効率的に行うことができる。
また、前記重ね合わせ部は、前記平坦部の平面同士が接しているので、打設コンクリートが漏出する虞のない高品質のスラブ施工に寄与することができる。
要するに、フラットデッキをスパン方向に沿って切断するだけで連続敷設作業に好適な役物に転用（変形）可能なフラットデッキを提供することができる。 (1) According to the flat deck according to the present invention, two protrusions are formed on the flat portion on one end side in the width direction in a balanced manner on the left and right sides, and the protrusion is formed in the central portion on the flat portion on the other end. The cross-sectional performance of the entire flat deck can be effectively improved by carrying out the process by forming one large portion. Moreover, the usable span can be increased by effectively improving the buckling strength.
In connection with the said effect, when implement | achieving in the same span as the conventional flat deck, compared with the conventional flat deck, workability improves, such as the weight of the whole flat deck being made small.
As an example of the effect, in the design of the formwork, in the conventional flat deck, the deflection coefficient C used in the deflection calculation formula is calculated as 1.6. According to the test by the present applicant, It was found that 1.6 of the flat deck with embossing according to Patent Document 3 can be reduced (specifically, C = 1.33), and the usable span length of the flat deck is increased accordingly. I have already confirmed that I can do it. The deflection calculation formula is an equation for calculating the deflection of the flat deck in the design of the formwork, and the deflection coefficient takes into account the cross-sectional range in which the flat deck is subjected to compression effectively, and its sectional performance. This is a correction coefficient that anticipates an effect on the decrease in. Therefore, if the deflection coefficient C is reduced, the calculated value of the deflection of the flat deck can be reduced, and the usable span length of the flat deck can be increased.
(2) According to the flat deck laying method according to the present invention, as shown stepwise in FIGS. 4A and 4B, the flat portion (flat portion) of the ridge portion at the right end is laid in advance. Since the flat surfaces of the flat portions can be overlapped with each other when placed on the upper surface of the flat portion (flat portion) of the projected ridge portion of the flat deck (or an accessory of the flat deck), the flat portion is thereafter Thus, it is possible to perform a width adjustment operation rich in flexibility (freedom) in a wide area of the width, and to perform a continuous laying operation efficiently.
Moreover, since the planes of the flat portions are in contact with each other, the overlapping portion can contribute to high-quality slab construction that does not cause leakage of cast concrete.
In short, it is possible to provide a flat deck that can be diverted (deformed) into an accessory suitable for continuous laying work by simply cutting the flat deck along the span direction.

実施例１に係るフラットデッキの断面図である。具体的には、フラットデッキの長手（スパン）方向両端部に施したエンドクローズ加工を除く中間部の断面図である。1 is a cross-sectional view of a flat deck according to Embodiment 1. FIG. Specifically, it is a cross-sectional view of an intermediate portion excluding end close processing applied to both ends in the longitudinal (span) direction of the flat deck. Ａは、図１に係るフラットデッキの断面図そのものに寸法用の符号を付したものであり、Ｂ〜Ｄは、Ａのフラットデッキを素材として所定の位置でスパン方向に沿って切断してなるフラットデッキの役物を示した断面図である。A is a cross-sectional view of the flat deck itself shown in FIG. 1 with a dimensional code, and B to D are cut along the span direction at a predetermined position using the flat deck of A as a material. It is sectional drawing which showed the accessory of the flat deck. Ａ、Ｂは、図２Ａ〜Ｄに示したフラットデッキ又はフラットデッキの役物の幅方向一端部（左端部分）の水平リップ付きの脚部リブに、図２Ａに示したフラットデッキ（標準品）の差し込み部を差し込み、連続敷設する要領を段階的に示した断面図である。A and B are a flat deck (standard product) shown in FIG. 2A on a leg rib with a horizontal lip at one end (left end part) in the width direction of the flat deck or a flat deck accessory shown in FIGS. It is sectional drawing which showed the point which inserts the insertion part of this and continuously lays it in steps. Ａ、Ｂは、図２Ａ〜Ｄに示したフラットデッキ又はフラットデッキの役物の幅方向一端部（左端部分）の突条部の平坦部分（平坦部）の上面に、図２Ｂに示したフラットデッキの役物（非標準品）の突条部の平坦部分（平坦部）を重ね合わせる要領を段階的に示した断面図である。A and B are the flat deck shown in FIG. 2B on the upper surface of the flat part (flat part) of the ridge part of the width direction one end part (left end part) of the flat deck shown in FIGS. It is sectional drawing which showed the point which overlaps | superimposes the point which overlaps | superposes the flat part (flat part) of the protrusion part of the accessory (nonstandard goods) of a deck. Ａ、Ｂは、図２Ａ〜Ｄに示したフラットデッキ又はフラットデッキの役物の幅方向一端部（左端部分）の突条部の平坦部分（平坦部）の上面に、図２Ｃに示したフラットデッキの役物（非標準品）の突条部の平坦部分（平坦部）を重ね合わせる要領を段階的に示した断面図である。A and B are the flat deck shown in FIG. 2C on the upper surface of the flat portion (flat portion) of the ridge portion at one end (left end portion) in the width direction of the flat deck shown in FIGS. It is sectional drawing which showed the point which overlaps | superimposes the point which overlaps | superposes the flat part (flat part) of the protrusion part of the accessory (nonstandard goods) of a deck. Ａ、Ｂは、図２Ａ〜Ｄに示したフラットデッキ又はフラットデッキの役物の幅方向一端部（左端部分）の突条部の平坦部分（平坦部）の上面に、図２Ｄに示したフラットデッキの役物（非標準品）の突条部の平坦部分（平坦部）を重ね合わせる要領を段階的に示した断面図である。A and B are the flat deck shown in FIG. 2D on the upper surface of the flat portion (flat portion) of the ridge portion at one end (left end portion) in the width direction of the flat deck shown in FIGS. It is sectional drawing which showed the point which overlaps | superimposes the point which overlaps | superposes the flat part (flat part) of the protrusion part of the accessory (nonstandard goods) of a deck. 実施例２に係るフラットデッキの断面図である。5 is a cross-sectional view of a flat deck according to Embodiment 2. FIG. Ａは、図１に係るフラットデッキの断面図そのものであり、Ｂ、Ｃは、Ａのフラットデッキを素材として所定の位置でスパン方向に沿って切断してなるフラットデッキの役物を示した断面図である。1A is a cross-sectional view of the flat deck according to FIG. 1, and B and C are cross-sections showing the features of the flat deck formed by cutting the flat deck of A along the span direction at a predetermined position. FIG. Ａ、Ｂは、図８Ａ〜Ｃに示したフラットデッキ又はフラットデッキの役物の幅方向一端部（左端部分）の水平リップ付きの脚部リブに、図８Ａに示したフラットデッキ（標準品）の差し込み部を差し込み、連続敷設する要領を段階的に示した断面図である。A and B are flat decks (standard products) shown in FIG. 8A on leg ribs with a horizontal lip at one end (left end part) in the width direction of the flat deck or flat deck accessory shown in FIGS. It is sectional drawing which showed the point which inserts the insertion part of this and continuously lays it in steps. Ａ、Ｂは、図８Ａ〜Ｃに示したフラットデッキ又はフラットデッキの役物の幅方向一端部（左端部分）の突条部の平坦部分（平坦部）の上面に、図８Ｂに示したフラットデッキの役物（非標準品）の突条部の平坦部分（平坦部）を重ね合わせる要領を段階的に示した断面図である。A and B are the flat deck shown in FIG. 8B on the upper surface of the flat portion (flat portion) of the ridge portion of the flat deck or the flat deck shown in FIGS. It is sectional drawing which showed the point which overlaps | superimposes the point which overlaps | superposes the flat part (flat part) of the protrusion part of the accessory (nonstandard goods) of a deck. Ａ、Ｂは、図８Ａ〜Ｃに示したフラットデッキ又はフラットデッキの役物の幅方向一端部（左端部分）の突条部の平坦部分（平坦部）の上面に、図８Ｃに示したフラットデッキの役物（非標準品）の突条部の平坦部分（平坦部）を重ね合わせる要領を段階的に示した断面図である。A and B are the flat deck shown in FIG. 8C on the upper surface of the flat portion (flat portion) of the ridge portion at one end (left end portion) in the width direction of the flat deck shown in FIGS. It is sectional drawing which showed the point which overlaps | superimposes the point which overlaps | superposes the flat part (flat part) of the protrusion part of the accessory (nonstandard goods) of a deck. 実施例３に係るフラットデッキの断面図である。10 is a cross-sectional view of a flat deck according to Embodiment 3. FIG. 実施例４に係るフラットデッキの断面図である。6 is a cross-sectional view of a flat deck according to Embodiment 4. FIG. 実施例５に係るフラットデッキの断面図である。10 is a cross-sectional view of a flat deck according to Embodiment 5. FIG. 実施例６に係るフラットデッキの断面図である。10 is a cross-sectional view of a flat deck according to Embodiment 6. FIG. Ａは、図１４に係るフラットデッキの断面図そのものであり、Ｂ、Ｃは、Ａのフラットデッキを素材として所定の位置でスパン方向に沿って切断してなるフラットデッキの役物を示した断面図である。A is a cross-sectional view of the flat deck according to FIG. 14, and B and C are cross-sections showing the features of the flat deck obtained by cutting the flat deck of A along the span direction at a predetermined position. FIG. Ａ、Ｂは、図１６Ａ〜Ｃ等に示したフラットデッキ又はフラットデッキの役物の幅方向一端部（左端部分）の水平リップ付きの脚部リブに、図１６Ａに示したフラットデッキ（標準品）の差し込み部を差し込み、連続敷設する要領を段階的に示した断面図である。A and B are a flat deck (standard product) shown in FIG. 16A on a leg rib with a horizontal lip at one end (left end portion) in the width direction of the flat deck or the function of the flat deck shown in FIGS. It is sectional drawing which showed the point to insert the insertion part of) and to lay continuously. Ａ、Ｂは、図１６Ａ〜Ｃ等に示したフラットデッキ又はフラットデッキの役物の幅方向一端部（左端部分）の突条部の平坦部分（平坦部）の上面に、図１６Ｂに示したフラットデッキの役物（非標準品）の突条部の平坦部分（平坦部）を重ね合わせる要領を段階的に示した断面図である。A and B are shown in FIG. 16B on the upper surface of the flat portion (flat portion) of the ridge portion at one end portion (left end portion) in the width direction of the flat deck shown in FIGS. It is sectional drawing which showed the point which overlaps | superimposes the point which overlaps the flat part (flat part) of the protrusion part of the accessory (nonstandard goods) of a flat deck. Ａ、Ｂは、図１６Ａ〜Ｃ等に示したフラットデッキ又はフラットデッキの役物の幅方向一端部（左端部分）の突条部の平坦部分（平坦部）の上面に、図１６Ｃに示したフラットデッキの役物（非標準品）の突条部の平坦部分（平坦部）を重ね合わせる要領を段階的に示した断面図である。A and B are shown in FIG. 16C on the upper surface of the flat portion (flat portion) of the ridge portion of one end portion (left end portion) in the width direction of the flat deck shown in FIGS. It is sectional drawing which showed the point which overlaps | superimposes the point which overlaps the flat part (flat part) of the protrusion part of the accessory (nonstandard goods) of a flat deck. 実施例３に係るフラットデッキのバリエーションの断面図である。6 is a cross-sectional view of a variation of a flat deck according to Embodiment 3. FIG.

本発明は、鋼板がロール成形加工されて幅方向に平面部と脚部リブとが交互に連続して形成され、長手方向（スパン方向）の両端部は脚部リブを潰したエンドクローズ加工が施された所謂差し込み接続方式のフラットデッキに関する発明である。
本発明は、ロール成形加工で幅寸（例えば１ｍ）が設定された鋼板から、いかにして効果的に断面性能を向上させ、適正な役物にも転用（変形）することが可能な断面形状（折曲形状）を有するフラットデッキを実現させるために本出願人が鋭意追究した結果、開発された。
具体的には以下の実施例で逐一説明するが、要するに、フラットデッキを形成する平面部と脚部リブのうち、特に平面部に着眼し、断面性能を向上させるのに効果的な突条部を形成させる等の工夫を施した。さらに云えば、平面部の断面形状を一律に形成しない等、平面部と脚部リブとを同形同大の繰り返し形状で形成する従来のフラットデッキの固定概念を変えた断面形状を備えると共に、断面性能等の強度・剛性を十分に備えたフラットデッキを実現した。
なお、以下に説明する実施例にかかるフラットデッキは、図示例のとおり、左方から右方へ（又は右方から左方へ）脚部リブと平面部とを交互に３つずつ（図１〜図１３、及び図２０参照）、又は２つずつ（図１４〜図１９参照）連続させた基本的構成態様で実施しているが、これに限定されない。脚部リブの高さ寸法を短く設定することにより４つずつ連続させて実施できるほか、使用する鋼板の幅寸や構造設計等の諸条件に応じて適宜設計変更可能である。
以下、実施例について図面に基づいて説明する。 In the present invention, the steel sheet is roll-formed and flat portions and leg ribs are continuously formed alternately in the width direction, and both ends in the longitudinal direction (span direction) are end-closed by crushing the leg ribs. The present invention relates to a so-called plug-and-connect type flat deck.
The present invention is a cross-sectional shape that can effectively improve the cross-sectional performance from a steel sheet having a width dimension (for example, 1 m) set by roll forming and can be diverted (deformed) to an appropriate accessory. It was developed as a result of intensive investigations by the present applicant in order to realize a flat deck having a (folded shape).
Specifically, the following embodiments will be described step by step, but in short, out of the plane portion and leg ribs forming the flat deck, the ridge portion is particularly effective for improving the cross-sectional performance by focusing on the plane portion. And other measures were taken. Furthermore, the cross-sectional shape of the flat portion is not uniform, and the cross-sectional shape is different from the conventional flat deck fixing concept in which the flat portion and the leg rib are formed in the same shape and the same repeated shape. A flat deck with sufficient strength and rigidity such as cross-sectional performance has been realized.
In addition, as shown in the illustrated example, the flat deck according to the embodiment described below has three leg ribs and three flat portions alternately from left to right (or from right to left) (FIG. 1). To FIG. 13 and FIG. 20) or two (see FIG. 14 to FIG. 19) continuous basic configuration modes, but is not limited thereto. By setting the height of the leg ribs to be short, it can be carried out continuously by four, and the design can be appropriately changed according to various conditions such as the width of the steel plate used and the structural design.
Hereinafter, embodiments will be described with reference to the drawings.

実施例１にかかるフラットデッキは、図１に示したように、鋼板がロール成形加工されて幅方向に平面部１、１１と脚部リブ２とが交互に３つずつ連続して形成され、幅方向一端部に水平リップ３付きの脚部リブ２を備え、他端部に脚部リブ２のない張り出した平面部１１（１４）を備え、例えば図３Ａ、Ｂに段階的に示したように、前記張り出した平面部１１（１４）の端部を下方に折り曲げて形成した差し込み部４が、隣接する他のフラットデッキ１０等の対応する脚部リブ２（の上方の閉じ合わせ部内）に差し込まれて連続敷設可能な構成の所謂差し込み接続方式のフラットデッキ１０である。
前記平面部１、１１は、前記幅方向一端部寄りの第一平面部１と、前記第一平面部１以外の第二平面部１１とを備え、前記第一平面部１は、その両端部が上方に突出する上面が平坦な突条部１ａ、１ａを備え、前記第二平面部１１は、その中間部が上方に突出する上面が平坦な突条部１１ａを備え、前記各平面部１、１１に設けた前記上面が平坦な突条部１ａ、１１ａは、略同等高さに設定されている。 As shown in FIG. 1, the flat deck according to the first embodiment is formed by continuously forming three plane portions 1 and 11 and leg ribs 2 alternately in the width direction by roll forming a steel plate, A leg rib 2 with a horizontal lip 3 is provided at one end in the width direction, and a protruding flat part 11 (14) without the leg rib 2 is provided at the other end. For example, as shown in steps in FIGS. 3A and 3B Further, the insertion portion 4 formed by bending the end portion of the protruding flat portion 11 (14) downward is formed in the corresponding leg rib 2 (in the upper closing portion thereof) of the other adjacent flat deck 10 or the like. This is a so-called plug-and-connect type flat deck 10 that can be inserted and continuously laid.
The plane portions 1 and 11 include a first plane portion 1 near one end in the width direction and a second plane portion 11 other than the first plane portion 1, and the first plane portion 1 has both end portions thereof. The second flat surface portion 11 has a flat protrusion portion 11a whose upper surface protrudes upward, and the flat surface portion 1a has a flat upper surface. , 11 provided with flat top surfaces 1a, 11a are set to substantially the same height.

前記脚部リブ２は、一例として、断面形状が上半を閉じ合わせた略三角形状に形成され、前記閉じ合わせ部の上端から左右に水平に平面５（以下、フランジ５という。）が張り出す構成で実施されている。なお、前記水平リップ３は、前記フランジ５よりも低い位置から水平に張り出す構成で実施されている。 As an example, the leg rib 2 is formed in a substantially triangular shape having a cross-sectional shape that closes the upper half, and a flat surface 5 (hereinafter referred to as a flange 5) projects horizontally from the upper end of the closing portion to the left and right. Has been implemented in the configuration. In addition, the said horizontal lip 3 is implemented by the structure protruded horizontally from the position lower than the said flange 5. FIG.

本発明の特徴点である平面部１、１１の形状について説明すると、先ず、前記第一平面部１は、前記水平リップ３付きの脚部リブ２と前記脚部リブ２と隣接する脚部リブ２との間に連続して形成されている。
前記第一平面部１の両端部には、上方に突出する上面が平坦な突条部１ａ、１ａが形成されている。また、前記突条部１ａ、１ａ同士の間には、前記フランジ５と同一レベルの中間フランジ６が形成されている。
要するに、前記第一平面部１は、左方から右方へ、フランジ５、突条部１ａ、中間フランジ６、突条部１ａ、そしてフランジ５の順に形成されている。
さらに、前記突条部１ａ、１ａはそれぞれ、第一平面部１を略三等分割した程度の幅寸で実施され、前記フランジ５から上方へ立ち上がる傾斜ウェブ７と、前記中間フランジ６から上方へ立ち上がる傾斜ウェブ７と、前記傾斜ウェブ７、７の上端を結ぶ平坦部８とで形成されている。 The shape of the flat portions 1 and 11 that are the characteristic points of the present invention will be described. First, the first flat portion 1 includes a leg rib 2 with the horizontal lip 3 and a leg rib adjacent to the leg rib 2. 2 is formed continuously.
At both end portions of the first flat surface portion 1, ridge portions 1 a and 1 a having flat upper surfaces protruding upward are formed. An intermediate flange 6 having the same level as that of the flange 5 is formed between the protrusions 1a and 1a.
In short, the first flat surface portion 1 is formed in the order of the flange 5, the ridge portion 1 a, the intermediate flange 6, the ridge portion 1 a, and the flange 5 from the left to the right.
Further, each of the protrusions 1a and 1a is implemented with a width that is approximately equal to the first plane portion 1 divided into three equal parts, and an inclined web 7 rising upward from the flange 5 and upward from the intermediate flange 6. The inclined web 7 that rises and the flat portion 8 that connects the upper ends of the inclined webs 7 and 7 are formed.

ここで、本実施例に係るフラットデッキ１０（板厚０．８ｍｍ）の寸法例を示す（図２Ａを参照）。
Ｗ＝６３０、Ｗ_１＝２１０ｍｍ、ａ＝４７ｍｍ、ｂ＝５０ｍｍ、ｃ_１＝１６２ｍｍ、ｃ_２＝１６９ｍｍ、ｄ＝４０ｍｍ、Ｈ＝８０ｍｍ、Ｈ_１＝７５ｍｍ
なお、前記寸法はあくまでも一例に過ぎず、構造設計に応じて適宜設計変更可能である。また、鋼板は板厚０．８〜１．６ｍｍを用いるのが一般的であるが、仮に板厚１．６ｍｍの鋼板を用いる場合であっても上記寸法と大差はない。 Here, the example of a dimension of the flat deck 10 (plate thickness 0.8mm) which concerns on a present Example is shown (refer FIG. 2A).
W = 630, W ₁ = 210 mm, a = 47 mm, b = 50 mm, c ₁ = 162 mm, c ₂ = 169 mm, d = 40 mm, H = 80 mm, H ₁ = 75 mm
In addition, the said dimension is only an example to the last, and can change a design suitably according to structural design. Moreover, although it is common for a steel plate to use plate thickness 0.8-1.6mm, even if it is a case where a steel plate with a plate thickness of 1.6mm is used, there is no big difference with the said dimension.

前記寸法例でも分かるように、本実施例に係る第一平面部１は、大部分の領域を一対の突条部１ａ、１ａと中間フランジ６で形成した左右対称形状で実施されている。 As can be seen from the above-described example of dimensions, the first flat surface portion 1 according to the present embodiment is implemented in a bilaterally symmetric shape in which most of the region is formed by a pair of ridge portions 1 a and 1 a and an intermediate flange 6.

よって、上記構成の第一平面部１は、平面部に突条部１ａを設けることによりフラットデッキの断面性能算定時に有効に作用する断面範囲が増え、断面性能の向上に寄与する。
前記突条部１ａを上向きに設けることで、フラットデッキ全体の高さが大きくなり、断面性能の向上に寄与する。
さらに突条部１ａを左右にバランスよく２箇所設けることで、より効果的に座屈強度を向上させることができ、断面性能の向上に寄与し、前記たわみ係数Ｃを低減できる。ひいてはフラットデッキの使用可能なスパンを大きくすることに寄与する。
以上要するに、上記構成の第一平面部１によれば、突条部１ａを両端部に２箇所（２山）設けたことにより、フラットデッキ全体の断面性能の向上に寄与し、さらには、効果的に座屈強度を向上させることで使用可能なスパンを大きくできることに寄与する。 Therefore, the 1st plane part 1 of the said structure increases the cross-sectional area which acts effectively at the time of the cross-sectional performance calculation of a flat deck by providing the protrusion part 1a in a plane part, and contributes to the improvement of cross-section performance.
By providing the protruding portion 1a upward, the height of the entire flat deck is increased, which contributes to improvement in cross-sectional performance.
Further, by providing two protrusions 1a in a balanced manner on the left and right, the buckling strength can be improved more effectively, contributing to the improvement of the cross-sectional performance, and the deflection coefficient C can be reduced. As a result, it contributes to increasing the usable span of the flat deck.
In short, according to the first flat surface portion 1 having the above-described configuration, the protrusion 1a is provided at two positions (two ridges) at both ends, thereby contributing to the improvement of the cross-sectional performance of the entire flat deck, and further, the effect. In particular, it contributes to increasing the usable span by improving the buckling strength.

次に、前記第二平面部１１、１１のうち左方の第二平面部１１は、脚部リブ２同士の間に連続して形成されている。
前記第二平面部１１の中間部にはそれぞれ、上方に突出する上面が平坦な突条部１１ａが形成されている。
要するに、前記第二平面部１１は、左方から右方へ、フランジ５、突条部１１ａ、そしてフランジ５の順に形成されている。
さらに、前記突条部１１ａは、第二平面部１１の大部分の領域を占め、左右のフランジ５、５から上方へ立ち上がる傾斜ウェブ７、７と、前記傾斜ウェブ７、７の上端を結ぶ平坦部９とで形成されている。
図２Ａに示した寸法例でも分かるように、本実施例に係る第二平面部１１は、大部分の領域を突条部１１ａで形成した左右対称形状で実施されている。 Next, the left second flat surface portion 11 of the second flat surface portions 11 and 11 is continuously formed between the leg ribs 2.
Each intermediate portion of the second flat surface portion 11 is formed with a ridge portion 11a having a flat upper surface protruding upward.
In short, the second flat surface portion 11 is formed from the left to the right in the order of the flange 5, the protrusion 11 a, and the flange 5.
Further, the protruding portion 11 a occupies most of the area of the second flat surface portion 11, and connects the inclined webs 7, 7 rising upward from the left and right flanges 5, 5 and the upper ends of the inclined webs 7, 7. A portion 9 is formed.
As can be seen from the dimension example shown in FIG. 2A, the second flat surface portion 11 according to the present embodiment is implemented in a bilaterally symmetric shape in which most regions are formed by the ridge portions 11a.

次に、前記第二平面部１１、１１のうち右方の第二平面部１１（脚部リブのない張り出した第五平面部１４）は、前記左方の第二平面部１１と比べ、脚部リブ２と差し込み部４との間に連続して形成されている違いはあるものの、その他の形態は左方の第二平面部１１とほぼ同様である（図１、図２Ａ参照）。 Next, of the second plane parts 11, 11, the right second plane part 11 (the protruding fifth plane part 14 without leg ribs) is legged compared to the left second plane part 11. Although there is a difference formed continuously between the part rib 2 and the insertion part 4, the other forms are almost the same as the left second plane part 11 (see FIGS. 1 and 2A).

よって、上記構成の第二平面部１１、１１（１４）は、各平面部１１に突条部１１ａを設けることによりフラットデッキの断面性能算定時に有効に作用する断面範囲が増え、断面性能の向上に寄与する。
前記突条部１１ａを上向きに設けることで、フラットデッキ全体の高さが大きくなり、断面性能の向上に寄与する。
さらに大部分の領域を前記突条部１１ａ（平坦部９）が占めることで、割り付けの都合上、前記突条部１１ａで切断して役物とした際に、重ね代における幅調整の自在性が向上する。
以上要するに、上記構成の第二平面部１１、１１（１４）によれば、それぞれ、その中間部の大部分の領域に突条部１１ａを１箇所（１山）設けたことにより、フラットデッキ全体の断面性能の向上に寄与し、さらには、突条部１１ａの平坦部分（平坦部９）の幅寸を大きく設定したことにより、後述するように前記フラットデッキ１０を素材として製造する役物の連続敷設時の幅調整作業を容易ならしめる作用効果がある。 Therefore, the second flat surface portions 11 and 11 (14) having the above-described configuration increase the cross-sectional area effectively acting when calculating the cross-sectional performance of the flat deck by providing the ridge portions 11a on the respective flat surface portions 11, thereby improving the cross-sectional performance. Contribute to.
By providing the protruding portion 11a upward, the height of the entire flat deck is increased, which contributes to improvement in cross-sectional performance.
Furthermore, when the protrusion 11a (flat part 9) occupies most of the area, for convenience of assignment, when cutting the protrusion 11a into an accessory, it is possible to adjust the width at the stacking allowance. Will improve.
In short, according to the second flat surface portions 11 and 11 (14) having the above-described configuration, the entire flat deck is obtained by providing one ridge portion 11a (one mountain) in the majority of the intermediate portion of each. In addition, the width of the flat portion (flat portion 9) of the ridge portion 11a is set to be large so that the flat deck 10 can be used as a material to be manufactured as described later. This has the effect of facilitating the width adjustment work during continuous laying.

かくして、前記第一平面部１と前記第二平面部１１、１１（１４）とを合わせ持つ実施例１に係るフラットデッキ１０によれば、第一平面部１の左右にバランスよく２箇所、第二平面部１１、１１の各中央部に大きく１箇所の計４箇所に突条部１ａ、１１ａを形成して実施することにより、フラットデッキ１０全体の断面性能を向上させることができ、また、効果的に座屈強度を向上させることで使用可能なスパンを大きくすることができる。
これらの作用効果に伴い、従来のフラットデッキと同スパンで実施する場合は、従来のフラットデッキと比べ、フラットデッキ全体の重量を小さくできる等、施工性が向上する。
上述した作用効果についてその一例を示すと、本出願人による試験によれば、型枠の設計において、たわみ算定式に用いるたわみ係数Ｃが、前記特許文献３に係るエンボス付きのフラットデッキの場合の１．６を低減できることが判明し、その分、フラットデッキの使用可能なスパン長を大きくできることを既に確認している。この点については、以下の段落番号［００５１］以降の（本出願人による試験）の項で説明する。 Thus, according to the flat deck 10 according to the first embodiment having both the first flat surface portion 1 and the second flat surface portions 11 and 11 (14), the first flat surface portion 1 can be The cross-sectional performance of the entire flat deck 10 can be improved by forming the ridges 1a and 11a in a total of four locations, one at each central portion of the two plane portions 11 and 11, and The usable span can be increased by effectively improving the buckling strength.
In connection with these effects, when the same span as a conventional flat deck is used, the workability is improved, for example, the weight of the entire flat deck can be reduced as compared with the conventional flat deck.
As an example of the above-described effects, according to the test by the present applicant, the deflection coefficient C used in the deflection calculation formula in the design of the mold is the case of the flat deck with embossing according to Patent Document 3. It has been confirmed that 1.6 can be reduced, and the usable span length of the flat deck can be increased accordingly. This point will be described in the section (Test by Applicant) after paragraph number [0051] below.

次に、前記フラットデッキ１０（標準品）を素材として製造するフラットデッキの役物（非標準品）について説明する。 Next, a feature (non-standard product) of a flat deck manufactured using the flat deck 10 (standard product) as a material will be described.

前記第一平面部１を含むフラットデッキの役物は、前記第一平面部１以外の平面部（第二平面部）１１に形成した前記突条部１１ａの平坦部分（平坦部９）の所定の位置で切断されて形成される。ここでは、切断部位に応じて形成（製造）した３種のフラットデッキの役物について説明する。
図２Ｂに係るフラットデッキの役物１０Ａは、標準品である前記フラットデッキ１０の幅方向他端部（図示例では右端部）の張り出した第二平面部１１の突条部１１ａのうち、平坦部分である平坦部９の右端縁と傾斜フランジ７との境界付近で切断して形成している。
図２Ｃに係るフラットデッキの役物１０Ｂは、標準品である前記フラットデッキ１０の幅方向他端部（図示例では右端部）の張り出した第二平面部１１の上面が平坦な突条部１１ａのうち、平坦部分である平坦部９の中央部で切断して形成している。
図２Ｄに係るフラットデッキの役物１０Ｃは、標準品である前記フラットデッキ１０の中央の第二平面部１１の上面が平坦な突条部１１ａのうち、平坦部９の右端縁と傾斜フランジ７との境界付近で切断して形成している。 The role of the flat deck including the first plane portion 1 is a predetermined portion of the flat portion (flat portion 9) of the ridge portion 11a formed on the plane portion (second plane portion) 11 other than the first plane portion 1. It is cut and formed at the position of. Here, the three types of flat deck objects formed (manufactured) according to the cutting site will be described.
The flat deck accessory 10A according to FIG. 2B is flat among the protruding portions 11a of the second flat surface portion 11 protruding from the width direction other end portion (right end portion in the illustrated example) of the flat deck 10 which is a standard product. It is formed by cutting near the boundary between the right edge of the flat portion 9 and the inclined flange 7.
The flat deck accessory 10B according to FIG. 2C is a ridge portion 11a having a flat upper surface of the second flat surface portion 11 protruding from the other widthwise end portion (right end portion in the illustrated example) of the flat deck 10 as a standard product. Of these, it is formed by cutting at the central portion of the flat portion 9 which is a flat portion.
The flat deck accessory 10C according to FIG. 2D includes a right edge of the flat portion 9 and the inclined flange 7 among the protruding portion 11a having a flat upper surface of the second flat portion 11 at the center of the flat deck 10 as a standard product. And cut near the boundary.

よって、前記図２Ｂに係るフラットデッキの役物１０Ａによれば、図４Ａ、Ｂに段階的に示したように、その右端部の突条部１１ａの平坦部分である平坦部９を、先行して敷設されたフラットデッキ１０（又はフラットデッキの役物１０Ａ〜１０Ｃ）の突条部１ａの平坦部分である平坦部８の上面に載せると、前記平坦部８、９の平面同士を重ね合わせることが可能となるので、その後は前記平坦部８の幅寸ａ（本実施例では４７ｍｍ）の広い領域で柔軟性（自在性）に富む幅調整作業を行うことができ、ひいては連続敷設作業を効率的に行うことができる。
また、前記重ね合わせ部は、前記平坦部８、９の平面同士が接しているので、打設コンクリートが漏出する虞のない高品質のスラブ施工に寄与することができる。なお、このフラットデッキの役物１０Ａは、フラットデッキの敷き始め用にも好適に用いられる。 Therefore, according to the flat deck accessory 10A according to FIG. 2B, as shown in steps in FIGS. 4A and 4B, the flat portion 9 which is the flat portion of the ridge portion 11a at the right end is preceded. When placed on the upper surface of the flat portion 8 which is a flat portion of the ridge portion 1a of the flat deck 10 (or flat deck accessories 10A to 10C) laid, the flat surfaces of the flat portions 8 and 9 are overlapped. After that, it is possible to perform a width adjustment operation rich in flexibility (freedom) in a wide area of the width portion a (47 mm in the present embodiment) of the flat portion 8, and thus the continuous laying operation is efficient. Can be done automatically.
Moreover, since the planes of the flat portions 8 and 9 are in contact with each other, the overlapping portion can contribute to high-quality slab construction that does not cause leakage of the cast concrete. The flat deck accessory 10A is also preferably used for starting the flat deck.

同様に、前記図２Ｃに係るフラットデッキの役物１０Ｂによれば、図５Ａ、Ｂに段階的に示したように、その右端部の突条部１１ａの平坦部分（平坦部９）を、先行して敷設されたフラットデッキ１０（又はフラットデッキの役物１０Ａ〜１０Ｃ）の突条部１ａの平坦部８の上面に載せると、前記平坦部８、９の平面同士を重ね合わせることが可能となるので、その後は前記平坦部８の幅寸ａの広い領域で柔軟性に富む幅調整作業を行うことができ、ひいては連続敷設作業を効率的に行うことができる。
また、前記重ね合わせ部は、前記平坦部８、９の平面同士が接しているので、打設コンクリートが漏出する虞のない高品質のスラブ施工に寄与することができる。なお、このフラットデッキの役物１０Ｂは、フラットデッキの敷き始め用にも好適に用いられる。 Similarly, according to the flat deck article 10B according to FIG. 2C, as shown in steps in FIGS. 5A and 5B, the flat portion (flat portion 9) of the ridge 11a at the right end is advanced. When placed on the upper surface of the flat portion 8 of the ridge 1a of the flat deck 10 (or flat deck accessory 10A to 10C) laid, the flat surfaces of the flat portions 8 and 9 can be overlapped with each other. Therefore, after that, it is possible to perform a flexible width adjustment operation in a wide area of the flat portion 8 with a width dimension a, and thus to perform a continuous laying operation efficiently.
Moreover, since the planes of the flat portions 8 and 9 are in contact with each other, the overlapping portion can contribute to high-quality slab construction that does not cause leakage of the cast concrete. The flat deck accessory 10B is also preferably used for starting the flat deck.

同様に、前記図２Ｄに係るフラットデッキの役物１０Ｃによれば、図６Ａ、Ｂに段階的に示したように、その右端部の突条部１１ａの平坦部分（平坦部９）を、先行して敷設されたフラットデッキ１０（又はフラットデッキの役物１０Ａ〜１０Ｃ）の突条部１ａの平坦部８の上面に載せると、前記平坦部８、９の平面同士を重ね合わせることが可能となるので、その後は前記平坦部８の幅寸ａの広い領域で柔軟性に富む幅調整作業を行うことができ、ひいては連続敷設作業を効率的に行うことができる。
また、前記重ね合わせ部は、前記平坦部８、９の平面同士が接しているので、打設コンクリートが漏出する虞のない高品質のスラブ施工に寄与することができる。なお、このフラットデッキの役物１０Ｃは、フラットデッキの敷き始め用にも好適に用いられる。 Similarly, according to the flat deck accessory 10C according to FIG. 2D, as shown in FIGS. 6A and 6B, the flat portion (flat portion 9) of the ridge portion 11a at the right end is advanced. When placed on the upper surface of the flat portion 8 of the ridge 1a of the flat deck 10 (or flat deck accessory 10A to 10C) laid, the flat surfaces of the flat portions 8 and 9 can be overlapped with each other. Therefore, after that, it is possible to perform a flexible width adjustment operation in a wide area of the flat portion 8 with a width dimension a, and thus to perform a continuous laying operation efficiently.
Moreover, since the planes of the flat portions 8 and 9 are in contact with each other, the overlapping portion can contribute to high-quality slab construction that does not cause leakage of the cast concrete. The flat deck accessory 10C is also preferably used for starting the flat deck.

図７に示したフラットデッキ２０は、上記実施例１に係るフラットデッキ１０と比べ、図１と図７とを対比参照すれば分かりやすいように、フラットデッキを形成する３つの平面部のうち、中央部に位置する平面部の形状のみ相違する。その他の構成要素は上記実施例１と同一なので同一の符号を付してその説明を適宜省略する。 As compared with the flat deck 10 according to the first embodiment, the flat deck 20 shown in FIG. 7 is easy to understand by comparing FIG. 1 and FIG. Only the shape of the flat portion located at the center is different. Since the other components are the same as those in the first embodiment, the same reference numerals are given and the description thereof is omitted as appropriate.

すなわち、この実施例２にかかるフラットデッキ２０は、図７に示したように、鋼板がロール成形加工されて幅方向に平面部１、１２、１３（１４）と脚部リブ２とが交互に３つずつ連続して形成され、幅方向一端部に水平リップ３付きの脚部リブ２を備え、他端部に脚部リブ２のない張り出した平面部１３（１４）を備え、例えば図９Ａ、Ｂに段階的に示したように、前記張り出した平面部１３（１４）の端部を下方に折り曲げて形成した差し込み部４が、隣接する他のフラットデッキ２０等の対応する脚部リブ２（の上方の閉じ合わせ部内）に差し込まれて連続敷設可能な構成の所謂差し込み接続方式のフラットデッキ２０である。
前記平面部１、１２、１３（１４）は、前記幅方向一端部寄りの第一平面部１と、前記第一平面部に隣接する第三平面部１２と、前記第一平面部１、前記第三平面部１２以外の第四平面部１３（１４）とを備え、前記第一平面部１と前記第三平面部１２は、各平面部１、１２の両端部が上方に突出する上面が平坦な突条部１ａ、１２ａを備え、前記第四平面部１３（１４）は、その中間部が上方に突出する上面が平坦な突条部１３ａを備え、前記各平面部１、１２、１３に設けた前記上面が平坦な突条部１ａ、１２ａ、１３ａは、略同等高さに設定されている。 That is, in the flat deck 20 according to the second embodiment, as shown in FIG. 7, the steel plates are roll-formed and the plane portions 1, 12, 13 (14) and the leg ribs 2 are alternately arranged in the width direction. Each of the three ribs is formed in succession, has a leg rib 2 with a horizontal lip 3 at one end in the width direction, and has a protruding flat portion 13 (14) without the leg rib 2 at the other end. As shown in steps B and B, the insertion portion 4 formed by bending the end portion of the protruding flat portion 13 (14) downward is formed into the corresponding leg rib 2 of the other adjacent flat deck 20 or the like. This is a so-called plug-and-connect type flat deck 20 that can be continuously laid by being inserted into the upper closing portion.
The plane portions 1, 12, 13 (14) include a first plane portion 1 near the one end in the width direction, a third plane portion 12 adjacent to the first plane portion, the first plane portion 1, A fourth plane portion 13 (14) other than the third plane portion 12, and the first plane portion 1 and the third plane portion 12 have upper surfaces on which both end portions of the plane portions 1 and 12 protrude upward. The flat surface portions 1a and 12a are provided, and the fourth flat surface portion 13 (14) is provided with a flat surface ridge portion 13a whose intermediate portion protrudes upward, and each of the flat surface portions 1, 12 and 13 is provided. The ridges 1a, 12a, 13a having a flat upper surface provided in are set to substantially the same height.

このフラットデッキ２０の平面部１、１２、１３の構成および作用効果については、先ず、前記第一平面部１は、上記実施例１に係る第一平面部１と同形同大なのでその説明を省略する（前記段落［００１９］〜[００２２]を参照）。
次に、前記第三平面部１２は、前記第一平面部１と同形同大なのでその説明を省略する（前記段落［００１９］〜[００２２]を参照）。
次に、前記第四平面部１３（脚部リブのない張り出した第五平面部１４）は、上記実施例１に係る右方の第二平面部１１と同形同大なのでその説明を省略する（前記段落［００２３］〜[００２５]を参照）。 Regarding the configuration and operational effects of the flat surface portions 1, 12, and 13 of the flat deck 20, first, the first flat surface portion 1 has the same shape and size as the first flat surface portion 1 according to the first embodiment. Omitted (see paragraphs [0019] to [0022] above).
Next, since the third plane portion 12 has the same shape and size as the first plane portion 1, the description thereof is omitted (see paragraphs [0019] to [0022]).
Next, the fourth flat surface portion 13 (the protruding fifth flat surface portion 14 without leg ribs) has the same shape and the same size as the right second flat surface portion 11 according to the first embodiment, and the description thereof is omitted. (See paragraphs [0023]-[0025] above).

かくして、前記第一平面部１、前記第三平面部１２、および前記第四平面部１３とを合わせ持つ実施例２に係るフラットデッキ２０によれば、第一平面部１、第三平面部１２の左右にバランスよく２箇所、第四平面部１３の各中央部に大きく１箇所の計５箇所に突条部１ａ、１２ａ、１３ａを形成して実施することにより、上記実施例１と比べ、中央部に設ける第三平面部１２の形状に違いはあるものの、フラットデッキ２０全体の断面性能を向上させることができ、また、効果的に座屈強度を向上させることで使用可能なスパンを大きくすることができる等、上記実施例１に係るフラットデッキ１０と同様の作用効果を発揮することができる（詳しくは、前記段落［００２６］を参照）。 Thus, according to the flat deck 20 according to the second embodiment having the first plane portion 1, the third plane portion 12, and the fourth plane portion 13, the first plane portion 1 and the third plane portion 12 are combined. Compared with the above-mentioned Example 1, by forming the ridges 1a, 12a, 13a in two places with a good balance on the left and right, and a large one in each central part of the fourth plane part 13 in a total of five places, Although there is a difference in the shape of the third flat surface portion 12 provided in the central portion, the cross-sectional performance of the entire flat deck 20 can be improved, and the usable span can be increased by effectively improving the buckling strength. For example, the same effects as those of the flat deck 10 according to the first embodiment can be achieved (for details, see paragraph [0026] above).

次に、前記フラットデッキ２０（標準品）を素材として製造するフラットデッキの役物（非標準品）について説明する。 Next, a description will be given of an accessory (non-standard product) of a flat deck manufactured using the flat deck 20 (standard product) as a raw material.

前記第一平面部１を含むフラットデッキの役物は、前記第一平面部１以外の平面部、具体的には前記第四平面部１３に形成した前記上面が平坦な突条部１３ａの平坦部９の所定の位置で切断されて形成される。ここでは、切断部位に応じて形成（製造）した２種のフラットデッキの役物について説明する。
図８Ｂに係るフラットデッキの役物２０Ａは、標準品である前記フラットデッキ２０（図８Ａ等を参照）の幅方向他端部（図示例では右端部）の張り出した第四平面部１３の上面が平坦な突条部１３ａのうち、平坦部９の右端縁と傾斜フランジ７との境界付近で切断して形成している。
図８Ｃに係るフラットデッキの役物２０Ｂは、標準品である前記フラットデッキ２０の幅方向他端部（図示例では右端部）の張り出した第四平面部１３の上面が平坦な突条部１３ａのうち、平坦部９の中央部で切断して形成している。 The role of the flat deck including the first plane portion 1 is a flat portion other than the first plane portion 1, specifically, the flat surface of the ridge portion 13 a formed on the fourth plane portion 13 with the flat upper surface. It is formed by cutting at a predetermined position of the portion 9. Here, the two types of flat deck objects formed (manufactured) according to the cutting site will be described.
The flat deck accessory 20A according to FIG. 8B is an upper surface of the fourth flat surface portion 13 projecting from the other end portion in the width direction (right end portion in the illustrated example) of the flat deck 20 (see FIG. 8A etc.) which is a standard product. Is formed by cutting near the boundary between the right end edge of the flat portion 9 and the inclined flange 7 in the flat protrusion 13a.
The flat deck accessory 20B according to FIG. 8C is a ridge portion 13a having a flat upper surface of the fourth flat surface portion 13 protruding from the other widthwise other end portion (right end portion in the illustrated example) of the flat deck 20 as a standard product. Of these, it is formed by cutting at the center of the flat portion 9.

よって、前記図８Ｂに係るフラットデッキの役物２０Ａによれば、図１０Ａ、Ｂに段階的に示したように、その右端部の突条部１３ａの平坦部９を、先行して敷設されたフラットデッキ２０（又はフラットデッキの役物２０Ａ、２０Ｂ）の突条部１ａの平坦部８の上面に載せると、前記平坦部８、９の平面同士を重ね合わせることが可能となるので、その後は前記平坦部８の幅寸ａ（本実施例では４７ｍｍ）の広い領域で柔軟性に富む幅調整作業を行うことができ、ひいては連続敷設作業を効率的に行うことができる。
また、前記重ね合わせ部は、前記平坦部８、９の平面同士が接しているので、打設コンクリートが漏出する虞のない高品質のスラブ施工に寄与することができる。なお、このフラットデッキの役物２０Ａは、フラットデッキの敷き始め用にも好適に用いられる。 Therefore, according to the flat deck accessory 20A according to FIG. 8B, the flat portion 9 of the ridge 13a at the right end is laid in advance, as shown in steps in FIGS. 10A and 10B. Since the flat portions 8 and 9 can be overlapped with each other when placed on the upper surface of the flat portion 8 of the ridge 1a of the flat deck 20 (or flat deck accessory 20A, 20B), thereafter The width adjustment operation rich in flexibility can be performed in a wide region of the width a of the flat portion 8 (47 mm in the present embodiment), and the continuous laying operation can be efficiently performed.
Moreover, since the planes of the flat portions 8 and 9 are in contact with each other, the overlapping portion can contribute to high-quality slab construction that does not cause leakage of the cast concrete. The flat deck accessory 20A is also preferably used for starting the flat deck.

同様に、前記図８Ｃに係るフラットデッキの役物２０Ｂによれば、図１１Ａ、Ｂに段階的に示したように、その右端部の突条部１３ａの平坦部９を、先行して敷設されたフラットデッキ２０（又はフラットデッキの役物２０Ａ、２０Ｂ）の突条部１ａの平坦部８の上面に載せると、前記平坦部８、９の平面同士を重ね合わせることが可能となるので、その後は前記平坦部８の幅寸ａの広い領域で柔軟性に富む幅調整作業を行うことができ、ひいては連続敷設作業を効率的に行うことができる。
また、前記重ね合わせ部は、前記平坦部８、９の平面同士が接しているので、打設コンクリートが漏出する虞のない高品質のスラブ施工に寄与することができる。 Similarly, according to the flat deck accessory 20B according to FIG. 8C, the flat portion 9 of the ridge portion 13a at the right end portion is laid in advance as shown in steps in FIGS. 11A and 11B. If the flat deck 20 (or flat deck accessory 20A, 20B) is placed on the upper surface of the flat portion 8 of the ridge 1a, the flat surfaces of the flat portions 8, 9 can be overlapped with each other. Can perform flexible width adjustment work in a wide area of the flat portion 8 with a width dimension a, and thus can perform continuous laying work efficiently.
Moreover, since the planes of the flat portions 8 and 9 are in contact with each other, the overlapping portion can contribute to high-quality slab construction that does not cause leakage of the cast concrete.

図１２は、本発明に係るフラットデッキの異なる実施例を示している。この実施例３に係るフラットデッキ３０は、上記実施例１に係るフラットデッキ１０と比べ、第２平面部１１、１１の各突条部１１ａ（平坦部９）の両端部に山形リブ１５（計４箇所）を設けたことのみ相違する。その他の構成要素は上記実施例１と同一なので同一の符号を付してその説明を適宜省略する。
この実施例３に係るフラットデッキ３０によれば、上記実施例１に係るフラットデッキ１０の作用効果（前記段落［００２６］を参照）に加え、前記山形リブ１５のリブ効果に伴う断面性能の向上のほか、スラブ施工現場での作業者の滑り防止に寄与する効果がある。
また、図２０に係るフラットデッキ３０’は、山形リブ１５を第二平面部１１（第五平面部１４）の突条部に３個（又はそれ以上）設け、中央部の山形リブ１５を他の山形リブ１５よりも高く形成している。このように、中央部の山形リブ１５を高く形成することによって、製造時、第二平面部１１（第五平面部１４）に発生するポケットウェーブを抑えることができる。 FIG. 12 shows a different embodiment of the flat deck according to the present invention. Compared with the flat deck 10 according to the first embodiment, the flat deck 30 according to the third embodiment has chevron ribs 15 (total) on both ends of each protrusion 11a (flat portion 9) of the second flat surface portions 11 and 11. The only difference is that four locations are provided. Since the other components are the same as those in the first embodiment, the same reference numerals are given and the description thereof is omitted as appropriate.
According to the flat deck 30 according to the third embodiment, in addition to the function and effect of the flat deck 10 according to the first embodiment (see the paragraph [0026]), the cross-sectional performance is improved due to the rib effect of the chevron rib 15. Besides, there is an effect that contributes to prevention of slipping of workers at the slab construction site.
Further, the flat deck 30 ′ according to FIG. 20 has three (or more) chevron ribs 15 provided on the protrusions of the second flat surface part 11 (fifth flat surface part 14), and the central chevron ribs 15 are others. It is higher than the chevron rib 15. In this way, by forming the central chevron rib 15 higher, pocket waves generated in the second plane part 11 (fifth plane part 14) during manufacturing can be suppressed.

図１３は、本発明に係るフラットデッキの異なる実施例を示している。この実施例４に係るフラットデッキ４０は、上記実施例２に係るフラットデッキ２０と比べ、第四平面部１３の突条部１３ａ（平坦部９）の両端部に山形リブ１５を設けたことのみ相違する。その他の構成要素は上記実施例２と同一なので同一の符号を付してその説明を適宜省略する。
この実施例４に係るフラットデッキ４０によれば、上記実施例２に係るフラットデッキ２０の作用効果（前記段落［００３５］を参照）に加え、前記山形リブ１５のリブ効果に伴う断面性能の向上のほか、スラブ施工現場での作業者の滑り防止に寄与する効果がある。 FIG. 13 shows a different embodiment of the flat deck according to the present invention. Compared with the flat deck 20 according to the second embodiment, the flat deck 40 according to the fourth embodiment is provided only with the chevron ribs 15 at both ends of the ridge portion 13a (flat portion 9) of the fourth flat surface portion 13. Is different. Since the other components are the same as those in the second embodiment, the same reference numerals are given and the description thereof is omitted as appropriate.
According to the flat deck 40 according to the fourth embodiment, in addition to the function and effect of the flat deck 20 according to the second embodiment (see paragraph [0035] above), the cross-sectional performance is improved due to the rib effect of the chevron rib 15. Besides, there is an effect that contributes to prevention of slipping of workers at the slab construction site.

図１４は、本発明に係るフラットデッキの異なる実施例を示している。
この実施例５に係るフラットデッキ５０は、上記実施例１〜４と比べ、左方から右方へ（又は右方から左方へ）脚部リブと平面部とを交互に２つずつ連続して形成されている点が相違する。
要するに、このフラットデッキ５０は、前記実施例１〜４に係るフラットデッキ１０〜４０の前記中央の第二平面部１１が存在しないに等しい構成で実施している（図１と図１４とを対比して参照）。 FIG. 14 shows a different embodiment of the flat deck according to the present invention.
In the flat deck 50 according to the fifth embodiment, compared with the first to fourth embodiments, the leg ribs and the flat portions are alternately and continuously arranged from the left to the right (or from the right to the left). Are different.
In short, this flat deck 50 is implemented in a configuration equivalent to the absence of the central second flat surface portion 11 of the flat decks 10 to 40 according to the first to fourth embodiments (the comparison between FIG. 1 and FIG. 14). See).

すなわち、この実施例５にかかるフラットデッキ５０は、図１４に示したように、鋼板がロール成形加工されて幅方向に平面部１、１１（１４）と脚部リブ２とが交互に２つずつ連続して形成され、幅方向一端部に水平リップ３付きの脚部リブ２を備え、他端部に脚部リブ２のない張り出した平面部１１（１４）を備え、例えば図１７Ａ、Ｂに段階的に示したように、前記張り出した平面部１１（１４）の端部を下方に折り曲げて形成した差し込み部４が、隣接する他のフラットデッキ５０等の対応する脚部リブ２（の上方の閉じ合わせ部内）に差し込まれて連続敷設可能な構成の所謂差し込み接続方式のフラットデッキ５０である。
前記平面部１、１１（１４）は、前記幅方向一端部寄りの第一平面部１と、前記第一平面部に隣接する第二平面部１１（１４）とを備え、前記第一平面部１は、前記第一平面部１の両端部が上方に突出する上面が平坦な突条部１ａを備え、前記第二平面部１１（１４）は、その中間部が上方に突出する上面が平坦な突条部１１ａを備え、前記各平面部１、１１に設けた前記上面が平坦な突条部１ａ、１１ａは、略同等高さに設定されている。 That is, in the flat deck 50 according to the fifth embodiment, as shown in FIG. 14, the steel plate is roll-formed and the plane portions 1, 11 (14) and the leg ribs 2 are alternately arranged in the width direction. 17A and B, each of which is formed continuously, has a leg rib 2 with a horizontal lip 3 at one end in the width direction, and has an extended flat surface portion 11 (14) without the leg rib 2 at the other end. As shown stepwise, the insertion portion 4 formed by bending the end portion of the protruding flat portion 11 (14) downward is formed into a corresponding leg rib 2 (of the adjacent flat deck 50 or the like). This is a so-called plug-and-connect type flat deck 50 which can be continuously laid by being inserted into the upper closing portion.
The plane portions 1 and 11 (14) include a first plane portion 1 near one end in the width direction and a second plane portion 11 (14) adjacent to the first plane portion, and the first plane portion. 1 includes a protrusion 1a having a flat upper surface from which both end portions of the first flat portion 1 protrude upward, and the second flat portion 11 (14) has a flat upper surface from which an intermediate portion protrudes upward. The ridge portions 1a and 11a having a flat ridge portion 11a and having the flat upper surface provided on the flat surface portions 1 and 11 are set to have substantially the same height.

このフラットデッキ５０の平面部１、１１の構成および作用効果については、先ず、前記第一平面部１は、上記実施例１に係る第一平面部１と同形同大なのでその説明を省略する（前記段落［００１９］〜[００２２]を参照）。
前記第二平面部１１（脚部リブのない張り出した第五平面部１４）は、上記実施例１に係る右方の第二平面部１１と同形同大なのでその説明を省略する（前記段落［００２３］〜[００２５]を参照）。 Regarding the configuration and operational effects of the flat surface portions 1 and 11 of the flat deck 50, first, the first flat surface portion 1 has the same shape and size as the first flat surface portion 1 according to the first embodiment, and the description thereof is omitted. (See paragraphs [0019]-[0022] above).
The second flat surface portion 11 (the protruding fifth flat surface portion 14 without leg ribs) has the same shape and the same size as the right second flat surface portion 11 according to the first embodiment, and the description thereof is omitted (see paragraphs above). [0023] to [0025]).

かくして、前記第一平面部１、前記第二平面部１１とを合わせ持つ実施例５に係るフラットデッキ５０によれば、第一平面部１の左右にバランスよく２箇所、第二平面部１１の各中央部に大きく１箇所の計３箇所に突条部１ａ、１１ａを形成して実施することにより、上記実施例１と比べ、中央に設ける第二平面部１１の有無の違いはあるものの、同程度の幅寸を有する従来のフラットデッキと比べ、フラットデッキ５０全体の断面性能を向上させることができ、また、効果的に座屈強度を向上させることで使用可能なスパンを大きくすることができる。 Thus, according to the flat deck 50 according to the fifth embodiment having the first flat surface portion 1 and the second flat surface portion 11 together, the left and right sides of the first flat surface portion 1 are well balanced at two locations on the second flat surface portion 11. Although there is a difference in the presence or absence of the second flat surface portion 11 provided in the center compared to the above Example 1, by forming and implementing the protrusions 1a, 11a in a total of three locations, one in each central portion, Compared to a conventional flat deck having the same width, the cross-sectional performance of the entire flat deck 50 can be improved, and the usable span can be increased by effectively improving the buckling strength. it can.

図１５は、本発明に係るフラットデッキの異なる実施例を示している。この実施例５に係るフラットデッキ６０は、上記実施例５に係るフラットデッキ５０と比べ、第２平面部１１（１４）の突条部１１ａ（平坦部９）の両端部に山形リブ１５（計２箇所）を設けたことのみ相違する。その他の構成要素は上記実施例５と同一なので同一の符号を付してその説明を適宜省略する。
この実施例６に係るフラットデッキ６０によれば、上記実施例５に係るフラットデッキ５０の作用効果（前記段落［００４５］を参照）に加え、前記山形リブ１５のリブ効果に伴う断面性能の向上のほか、スラブ施工現場での作業者の滑り防止に寄与する効果がある。 FIG. 15 shows a different embodiment of the flat deck according to the present invention. Compared with the flat deck 50 according to the fifth embodiment, the flat deck 60 according to the fifth embodiment has chevron ribs 15 (total) at both ends of the protrusion 11a (flat portion 9) of the second flat surface portion 11 (14). The only difference is that two locations are provided. Since the other components are the same as those in the fifth embodiment, the same reference numerals are given and description thereof is omitted as appropriate.
According to the flat deck 60 according to the sixth embodiment, in addition to the function and effect of the flat deck 50 according to the fifth embodiment (see paragraph [0045] above), the cross-sectional performance is improved due to the rib effect of the chevron rib 15. Besides, there is an effect that contributes to prevention of slipping of workers at the slab construction site.

次に、上記実施例５に係るフラットデッキ５０（標準品）を素材として製造するフラットデッキの役物（非標準品）について説明する。
前記第一平面部１を含むフラットデッキの役物は、前記第一平面部１以外の平面部、具体的には前記第二平面部１１に形成した前記上面が平坦な突条部１１ａの平坦部９の所定の位置で切断されて形成される。ここでは、切断部位に応じて形成（製造）した２種のフラットデッキの役物について説明する。
図１６Ｂに係るフラットデッキの役物５０Ａは、標準品である前記フラットデッキ５０（図１６Ａ等を参照）の幅方向他端部（図示例では右端部）の張り出した第二平面部１１の上面が平坦な突条部１１ａのうち、平坦部９の右端縁と傾斜フランジ７との境界付近で切断して形成している。
図１６Ｃに係るフラットデッキの役物５０Ｂは、標準品である前記フラットデッキ５０の幅方向他端部（図示例では右端部）の張り出した第二平面部１１の上面が平坦な突条部１１ａのうち、平坦部９の中央部で切断して形成している。 Next, a flat deck accessory (non-standard product) manufactured using the flat deck 50 (standard product) according to the fifth embodiment as a raw material will be described.
The flat deck including the first flat surface portion 1 is flat on the flat surface portion other than the first flat surface portion 1, more specifically, on the ridge portion 11a formed on the second flat surface portion 11 with the flat upper surface. It is formed by cutting at a predetermined position of the portion 9. Here, the two types of flat deck objects formed (manufactured) according to the cutting site will be described.
A flat deck accessory 50A according to FIG. 16B is an upper surface of the second flat surface portion 11 projecting from the other end portion in the width direction (right end portion in the illustrated example) of the flat deck 50 (see FIG. 16A, etc.) which is a standard product. Is formed by cutting near the boundary between the right end edge of the flat portion 9 and the inclined flange 7 in the flat protrusion 11a.
A flat deck accessory 50B according to FIG. 16C is a ridge portion 11a having a flat upper surface of the second flat surface portion 11 protruding from the other widthwise other end portion (right end portion in the illustrated example) of the flat deck 50 which is a standard product. Of these, it is formed by cutting at the center of the flat portion 9.

よって、前記図１６Ｂに係るフラットデッキの役物５０Ａによれば、図１８Ａ、Ｂに段階的に示したように、その右端部の突条部１１ａの平坦部９を、先行して敷設されたフラットデッキ５０等の突条部１ａの平坦部８の上面に載せると、前記平坦部８、９の平面同士を重ね合わせることが可能となるので、その後は前記平坦部８の幅寸ａ（本実施例では４７ｍｍ）の広い領域で柔軟性に富む幅調整作業を行うことができ、ひいては連続敷設作業を効率的に行うことができる。
また、前記重ね合わせ部は、前記平坦部８、９の平面同士が接しているので、打設コンクリートが漏出する虞のない高品質のスラブ施工に寄与することができる。なお、このフラットデッキの役物５０Ａは、フラットデッキの敷き始め用にも好適に用いられる。 Therefore, according to the flat deck accessory 50A according to FIG. 16B, as shown in steps in FIGS. 18A and 18B, the flat portion 9 of the ridge portion 11a at the right end is laid in advance. Since the flat surfaces of the flat portions 8 and 9 can be overlapped with each other when placed on the upper surface of the flat portion 8 of the ridge portion 1a such as the flat deck 50, the width dimension a (the book) of the flat portion 8 thereafter. In the embodiment, a width adjustment operation rich in flexibility can be performed in a wide area of 47 mm), and a continuous laying operation can be efficiently performed.
Moreover, since the planes of the flat portions 8 and 9 are in contact with each other, the overlapping portion can contribute to high-quality slab construction that does not cause leakage of the cast concrete. The flat deck accessory 50A is also preferably used for starting the flat deck.

同様に、前記図１６Ｃに係るフラットデッキの役物５０Ｂによれば、図１９Ａ、Ｂに段階的に示したように、その右端部の突条部１１ａの平坦部９を、先行して敷設されたフラットデッキ５０等の突条部１ａの平坦部８の上面に載せると、前記平坦部８、９の平面同士を重ね合わせることが可能となるので、その後は前記平坦部８の幅寸ａの広い領域で柔軟性に富む幅調整作業を行うことができ、ひいては連続敷設作業を効率的に行うことができる。
また、前記重ね合わせ部は、前記平坦部８、９の平面同士が接しているので、打設コンクリートが漏出する虞のない高品質のスラブ施工に寄与することができる。 Similarly, according to the flat deck accessory 50B according to FIG. 16C, as shown in FIGS. 19A and 19B, the flat portion 9 of the ridge portion 11a at the right end is laid in advance. Since the flat portions 8 and 9 can be overlapped with each other when placed on the upper surface of the flat portion 8 of the protruding portion 1a such as the flat deck 50, the width a of the flat portion 8 is thereafter reduced. It is possible to perform flexible width adjustment work over a wide area, and thus to perform continuous laying work efficiently.
Moreover, since the planes of the flat portions 8 and 9 are in contact with each other, the overlapping portion can contribute to high-quality slab construction that does not cause leakage of the cast concrete.

以上、上記実施例１〜６を図面に基づいて説明したが、本発明は、図示例の限りではなく、その技術的思想を逸脱しない範囲において、当業者が通常に行う設計変更、応用のバリエーションの範囲を含むことを念のために言及する。
要するに、両端部に突条部を設ける平面部を左右２山タイプ、中央部に大きく突条部を設ける平面部を中央１山タイプと称すると、本発明に係るフラットデッキは、実施する平面部の数量（本実施例では３つ、又は２つ）にかかわらず、敷設作業時に重ね合わせて敷設される側の端部の平面部を左右２山タイプとし、敷設する側の端部の平面部を中央１山タイプとし、その間の平面部（もとより、平面部の数量を２つで実施する場合には存在しない。図１４等参照。）は、左右２山タイプであっても中央１山タイプであっても実施することができ、前記段落［００２６］等で説明した作用効果と同様の作用効果を発揮することができる。
なお、本出願人は、本発明に係るデッキプレートの作用効果を確認するべく、以下に説明するように、前記実施例１に係るデッキプレート１０（図１参照）について試験を行った。 The first to sixth embodiments have been described with reference to the drawings. However, the present invention is not limited to the illustrated examples, and variations in design and application that are normally performed by those skilled in the art without departing from the technical idea thereof. Note that it includes the scope of
In short, when the flat portion provided with the ridges on both ends is referred to as the left and right two-ridge type and the flat portion provided with the large ridge portion at the center is referred to as the central one-ridge type, the flat deck according to the present invention implements the flat portion. Regardless of the number (three or two in the present embodiment), the flat portion of the end portion on the side to be laid and overlapped at the time of laying work is a left and right mountain type, and the flat portion of the end portion on the laying side Is a single-mountain type, and the flat portion between them (originally, it does not exist when the number of flat portions is two. Refer to FIG. 14 etc.) However, the present invention can be carried out, and the same effects as those described in the paragraph [0026] etc. can be exhibited.
In addition, in order to confirm the effect of the deck plate which concerns on this invention, this applicant tested the deck plate 10 (refer FIG. 1) which concerns on the said Example 1 so that it may demonstrate below.

（本出願人による試験）
＜試験概要＞
たわみ算定係数Ｃを求めるために以下の試験を行った。コンクリートスラブの型枠として機能する前記デッキプレート１０に作用する力は、コンクリート重量による分布荷重であるため、４点曲げ試験を行い、スパン中央部のたわみ量及び載荷荷重を測定した。
＜試験体＞
試験は以下の条件で行った。
試験体は、前記デッキプレート１０（幅６３０ｍｍ、板厚０．８ｍｍ）の１枚とした。
試験体材料は、社団法人公共建築協会の規格であるＳＧＣＣ材を使用した。
スパンは安全側の評価のために通常使用する場合の最大スパンを超える値として、３５００ｍｍとした。
支持方法は平面部及び脚部リブ下面を支持できる治具を使用し、プレートを介して丸鋼に乗せることでピン支持とした。 (Examination by the applicant)
<Summary>
In order to obtain the deflection calculation coefficient C, the following test was performed. Since the force acting on the deck plate 10 functioning as a concrete slab formwork is a distributed load due to the weight of the concrete, a four-point bending test was performed to measure the deflection amount and the load load at the center of the span.
<Test body>
The test was conducted under the following conditions.
The test body was one piece of the deck plate 10 (width 630 mm, plate thickness 0.8 mm).
SGCC material which is the standard of the Japan Public Building Association was used as the test specimen material.
The span was set to 3500 mm as a value exceeding the maximum span in normal use for safety side evaluation.
The support method used the jig | tool which can support a plane part and a leg rib lower surface, and it was set as pin support by putting on a round steel through a plate.

＜試験方法＞
試験では油圧アムスラーを使用し、載荷梁を介して２点に静的な下向きの力を加え、試験体の変形、耐力を確認した。
前記２点の静的な下向きの力の載荷位置は、スパン（Ｌ）＝３５００ｍｍのうち、支持点から１１００ｍｍ（ａ）の位置で左右対称とした。
変位量（δ）がスパン（Ｌ）３５００ｍｍのフラットデッキでの許容値である２５ｍｍ（式：δ＝３５００／１８０＋５（ｍｍ）≒２５）に達したときの載荷荷重（２Ｐ）を測定し、たわみ算定式に用いるたわみ係数を設定、評価した。
＜試験結果＞
前記試験の結果、前記載荷荷重（２Ｐ）、前記変位量（δ）、前記スパン（Ｌ）、前記支持点からの距離（ａ）、たわみ算定式に用いるたわみ係数Ｃを算出すると、たわみ係数Ｃ＝（２４ＥＩ×δ）／｛Ｐａ（３Ｌ^２−４ａ^２)｝の式より、たわみ係数（Ｃ）は、約１．３３となった。 <Test method>
In the test, a hydraulic Amsler was used, and static downward force was applied to the two points via the loading beam, and the deformation and proof stress of the test specimen were confirmed.
The loading position of the static downward force at the two points was left-right symmetric at a position of 1100 mm (a) from the support point in the span (L) = 3500 mm.
When the displacement (δ) reaches 25 mm (formula: δ = 3500/180 + 5 (mm) ≒ 25), which is the allowable value for a flat deck with a span (L) of 3500 mm, the load (2P) is measured and bent. The deflection coefficient used in the calculation formula was set and evaluated.
<Test results>
As a result of the test, when the load load (2P), the displacement (δ), the span (L), the distance (a) from the support point, and the deflection coefficient C used in the deflection calculation formula are calculated, the deflection coefficient C = (24EI × δ) / {Pa (3L ² −4a ² )}, the deflection coefficient (C) was about 1.33.

＜考察＞
従来のフラットデッキのたわみ係数Ｃ＝１．６と比べ、上記実施例１に係るデッキプレート１０のたわみ係数Ｃは、１．３３と低減しているので、フラットデッキ１０のたわみの算定値を低減することができる。
すなわち、本出願人は、上記実施例１に係るデッキプレート１０は、従来のフラットデッキと比べ、たわみにくいといえるので、使用可能なスパン長を、従来のフラットデッキと比べ、大きくできると確信した。 <Discussion>
Compared to the deflection coefficient C = 1.6 of the conventional flat deck, the deflection coefficient C of the deck plate 10 according to the first embodiment is reduced to 1.33, so the calculated value of the deflection of the flat deck 10 is reduced. can do.
That is, the present applicant is convinced that the deck plate 10 according to the first embodiment is less flexible than the conventional flat deck, so that the usable span length can be increased as compared with the conventional flat deck. .

１第一平面部
１ａ突条部
２脚部リブ
３水平リップ
４差し込み部
５フランジ（平面）
６中間フランジ
７傾斜ウェブ
８平坦部
９平坦部
１０フラットデッキ
１０Ａフラットデッキの役物
１０Ｂフラットデッキの役物
１０Ｃフラットデッキの役物
１１第二平面部
１１ａ突条部
１２第三平面部
１２ａ突条部
１３第四平面部
１３ａ突条部
１４第五平面部
１５山形リブ
２０フラットデッキ
２０Ａフラットデッキの役物
２０Ｂフラットデッキの役物
３０フラットデッキ
３０’ フラットデッキ
４０フラットデッキ
５０フラットデッキ
５０Ａフラットデッキの役物
５０Ｂフラットデッキの役物
６０フラットデッキ DESCRIPTION OF SYMBOLS 1 1st plane part 1a Projection part 2 Leg part rib 3 Horizontal lip 4 Insertion part 5 Flange (plane)
6 Intermediate flange 7 Inclined web 8 Flat part 9 Flat part 10 Flat deck 10A Flat deck accessory 10B Flat deck accessory 10C Flat deck accessory 11 Second plane part 11a Projection part 12 Third plane part 12a Projection Part 13 Fourth flat part 13a Projection part 14 Fifth flat part 15 Yamagata rib 20 Flat deck 20A Flat deck part 20B Flat deck part 30 Flat deck 30 'Flat deck 40 Flat deck 50 Flat deck 50A Flat deck part 50B Flat Deck 60 Flat Deck

Claims

A flat deck in which the steel plate is roll-formed and the plane portions and leg ribs are alternately and continuously formed in the width direction,
The flat portion includes a first flat portion near one end in the width direction and a second flat portion other than the first flat portion,
The first plane portion includes a ridge portion having a flat upper surface from which both end portions of the first plane portion protrude upward,
The second flat surface portion includes a protrusion having a flat upper surface from which an intermediate portion of the second flat surface portion protrudes upward,
The flat deck having a flat upper surface provided on each of the flat portions is set to have substantially the same height.

In the flat deck in which the steel plate is roll-formed and the flat portions and leg ribs are alternately and continuously formed in the width direction,
The plane portion includes a first plane portion near one end in the width direction, a third plane portion adjacent to the first plane portion, and a fourth plane portion other than the first plane portion and the third plane portion. Prepared,
The first flat surface portion and the third flat surface portion each include a ridge portion having a flat upper surface from which both end portions of each flat surface portion protrude upward.
The fourth plane part includes a ridge part having a flat upper surface from which an intermediate part of the fourth plane part projects upward,
The flat deck having a flat upper surface provided on each of the flat portions is set to have substantially the same height.

Of the flat portion, the flat portion near the other end in the width direction is replaced with an overhanging fifth flat portion without leg ribs, and the fifth flat portion has the middle portion of the fifth flat portion upward. Protruding upper surface has a flat ridge,
3. The flat deck according to claim 1, wherein each flat portion other than the fifth flat portion has a left-right symmetrical shape.

The flat deck including the first flat portion is cut and formed at a predetermined position of the protruding portion formed on the flat portion other than the first flat portion. The flat deck described in any one of -3.

A flat deck laying method in which a part of the flat deck different from the flat deck is overlapped and continuously laid on the flat deck,
5. The flat deck accessory according to claim 4, on an upper surface of the protruding portion on one end side in the width direction of the first flat portion of the flat deck according to claim 1. A method for laying a flat deck, wherein the ridges are laid on top of each other at a cutting portion.