JPH084176A - Joint method of beam/slab - Google Patents

Abstract

PURPOSE:To sufficiently maintain an anchorage length of reinforcements and install a PCa floor slab without any fear of falling down even from a small beam, and what is more, install the slab easily by obviating the need for positioning or an installation procedure. CONSTITUTION:In a joint method which installs a pair of PCa floor slabs 12 as opposed and joints the paired floor slabs with a beam 10, holding studs 16 in between on the both sides of the top of the structural steel beam 10 which is located at the center of the tip and from which a number of studs 16 are projected in the longitudinal direction, a plurality of reinforcing rods 14 with a head are projected to the installation ends of both PCa floor slabs 12 while the tip of each reinforcing rod 14 with the head 14a is laid out in such a way that the tip may reach an area near the opposed PCa floor slab 12, crossing over the studs 16. After the installation of both PCa floor slabs 12, at least a pair of reinforcements 18 are installed in a crossed state with each reinforcing rod 14 on both sides of the studs 16 and tied by way of a wire tie 20. Then, mortar or concrete 20 is filled up in a groove 12a formed between both PCa floor slabs 12.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、梁とこの梁上に設置固
定されるプレキャスト床版（以下ＰＣａ床版と略記す
る）との接合方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining a beam and a precast floor slab (hereinafter abbreviated as PCa floor) installed and fixed on the beam.

【０００２】[0002]

【従来の技術】最近では、型枠工法によるスラブ床版に
替えてＰＣａ床版を梁の上に配置する工法が採用されて
いる。この工法では梁の片側にＰＣａ床版の一端を設置
するとともに、梁の他方側に設置されているＰＣａ床版
との間の隙間をモルタル，コンクリートなどの充填材を
充填して一体化する方法であるため、従来のような型枠
及び支保工の組立てや解体撤去等の手数及び現場打ちコ
ンクリート打設による手数を大幅に省略できる利点があ
る。2. Description of the Related Art Recently, a method of arranging a PCa floor slab on a beam instead of a slab floor slab by a formwork method has been adopted. In this method, one end of the PCa floor slab is installed on one side of the beam, and the gap between the PCa floor slab installed on the other side of the beam is filled with a filling material such as mortar or concrete to be integrated. Therefore, there is an advantage that the number of steps such as assembling or dismantling and removing the formwork and the supporting work and the number of steps of casting concrete in the conventional manner can be largely omitted.

【０００３】但し、単にモルタルを充填したのみでは、
ＰＣａ床版を固定することはできないため、従来では図
３（ａ）〜（ｃ）の方法によりＰＣａ床版同士の接合を
行っていた。However, if the mortar is simply filled,
Since the PCa floor slab cannot be fixed, conventionally, the PCa floor slabs were joined together by the method shown in FIGS. 3 (a) to 3 (c).

【０００４】まず（ａ）に示す方法は、Ｈ形鋼からなる
鉄骨梁１の上部中央に長手方向に沿って多数のスタッド
２を突出配置しておく一方、各ＰＣａ床版３の設置端部
に多数の差し筋３ａを突出配置し、その先端をスタッド
２を挾んで互いに相手側に突出させるべくＰＣａ床版３
を設置し、その後両ＰＣａ床版３の隙間にモルタルを充
填する方法である。First, in the method shown in (a), a large number of studs 2 are projectingly arranged in the longitudinal direction at the center of the upper portion of a steel frame beam 1 made of H-shaped steel, while the installation end portions of each PCa floor slab 3 are arranged. PCa floor slab 3 so that a large number of rebars 3a are arranged in a protruding manner, and the ends of the reinforcing bars 3a are sandwiched by the studs 2 so as to project toward each other.
Is installed, and then the mortar is filled in the gap between both PCa floor slabs 3.

【０００５】また、（ｂ）に示す方法は、各ＰＣａ床版
３の設置端に互いに重なり合うプレート３ｂを突出配置
しておき、この重なり部分を溶接することで一体化し、
その後隙間にモルタルを充填する方法である。Further, in the method shown in (b), the plates 3b which overlap each other are projectingly arranged at the installation ends of the respective PCa floor slabs 3 and the overlapping portions are welded to be integrated,
After that, it is a method of filling the gap with mortar.

【０００６】さらに（ｃ）に示す方法は、各ＰＣａ床版
３の設置端に、Ｕ字形をなす水平ループ状の差し筋３ｃ
を突出配置し、該差し筋５のループ端をスタッド２に嵌
合した状態に重ね配置した状態に設置し、その後隙間に
モルタルを充填する方法である。Further, in the method shown in (c), a horizontal loop-shaped streak 3c having a U shape is provided at the installation end of each PCa floor slab 3.
Is projectingly arranged, the loop end of the bar 5 is installed in a state of being overlapped with the stud 2 in a fitted state, and then the gap is filled with mortar.

【０００７】しかしながらこれらいずれの方法において
も次に述べる欠点があった。However, each of these methods has the following drawbacks.

【０００８】[0008]

【発明が解決しようとする課題】まず、（ａ）の方法で
は、差し筋３ａの定着長が不足かつ不均等になりがちで
あり、逆に定着長を長く設定した場合にはラップして施
工性が低下する欠点があるほか、特に小梁など設置しろ
を十分に取れない箇所に配置するには、抜け方向に対す
る強度が確保できないため脱落等の不安があった。First, in the method (a), the fixing lengths of the reinforcing bar 3a tend to be insufficient and uneven, and conversely, when the fixing length is set to be long, wrapping is performed. In addition to the drawback that it deteriorates, there is a concern that it may fall off because the strength in the pulling direction cannot be secured especially when it is placed in a place such as a small beam where the installation margin cannot be sufficiently taken.

【０００９】また、（ｂ）の方法では、強固に一体化で
きるものの溶接作業という新たな作業工数を取り入れな
ければならず、手間がかかる欠点があった。Further, the method (b) has a drawback that it requires a new man-hour for welding although it can be firmly integrated, which is troublesome.

【００１０】さらに、（ｃ）の方法では、脱落の惧れは
生じないものの、差し筋３ｃをスタッド２に位置決め嵌
合した状態でＰＣａ床版３を設置するので位置決めのた
めの手間がかかるとともに、対向するＰＣａ床版３の差
し筋３ｃ同士を互いにラップさせる必要があるため、こ
れらを交互に梁１上に設置しなければならず、手順の面
倒があった。Further, in the method of (c), although there is no fear of falling off, the PCa floor slab 3 is installed in a state in which the reinforcing bar 3c is positioned and fitted to the stud 2, so that it takes time and effort for positioning. Since it is necessary to wrap the rebars 3c of the PCa floor slabs 3 facing each other, they must be alternately installed on the beam 1 and the procedure is troublesome.

【００１１】本発明は以上の欠点を解消するものであ
り、その目的とするところは、配筋の定着長を十分に確
保して小梁等においても脱落の惧れなくＰＣａ床版を設
置でき、しかも位置決めや設置手順の面倒がなく設置で
きるようにした梁−スラブの接合方法を提供するもので
ある。The present invention is intended to solve the above-mentioned drawbacks, and an object of the present invention is to provide a PCa floor slab without failing to drop even a beam or the like by sufficiently securing the fixing length of the bar arrangement. Moreover, the present invention provides a beam-slab joining method that enables installation without troublesome positioning and installation procedures.

【００１２】[0012]

【課題を解決するための手段】前記目的を達成するた
め、本発明は、頂部中心にあって長手方向に多数のスタ
ッドを一列又は複数列に突出させた梁の上面両側に前記
スタッドを挟んで一対のプレキャスト床版を対向設置し
て梁に接合する方法において、前記両プレキャスト床版
の設置端には予め複数の頭付き鉄筋棒を突出するととも
に、前記両プレキャスト床版の設置状態で、前記各鉄筋
棒の頭部先端が前記スタッドを越えて相手側プレキャス
ト床版近傍に交互に到達すべく配置してなり、前記両プ
レキャスト床版の設置後前記スタッドの両側において各
鉄筋棒と交叉して平行な少くとも一対の鉄筋を配筋，結
束し、その後前記両プレキャスト床版の間に形成されて
いる溝部にモルタルまたはコンクリートからなる充填材
を充填することを特徴とする。In order to achieve the above-mentioned object, according to the present invention, the studs are sandwiched on both sides of the upper surface of a beam having a large number of studs projecting in one or more rows in the longitudinal direction at the center of the top. In the method of joining a pair of precast floor slabs facing each other, at the installation ends of both the precast floor slabs with a plurality of headed reinforcing bar in advance protruding, in the installed state of the both precast floor slabs, The head end of each reinforcing rod crosses the studs and is arranged so as to reach the vicinity of the partner's precast floor slab alternately, and after installation of both the precast slabs, intersects with each reinforcing rod on both sides of the stud. A special feature is to arrange and bind at least a pair of parallel reinforcing bars, and then to fill the groove formed between the two precast floor slabs with a filler made of mortar or concrete. To.

【００１３】[0013]

【作用】以上の構成によれば、鉄筋棒の頭部がスタッド
を越えた位置で各ＰＣａ床版の設置がなされる。両ＰＣ
ａ床版は交互に設置しても両方同時に設置しても鉄筋棒
はスタッドを挟んで交互に配置される。その後鉄筋の配
筋，結束により、両ＰＣａ版は梁上仮止めされる。その
後鉄筋棒及び鉄筋は充填材に一体化され、縦横の強度部
材として活用される。According to the above construction, each PCa floor slab is installed at the position where the head of the reinforcing bar exceeds the stud. Both PCs
a Whether the floor slabs are installed alternately or both are installed at the same time, the reinforcing bars are alternately arranged with the studs sandwiched therebetween. After that, both PCa plates are temporarily fixed on the beam by arranging and binding the reinforcing bars. After that, the reinforcing bars and reinforcing bars are integrated with the filling material and utilized as longitudinal and lateral strength members.

【００１４】[0014]

【実施例】以下、本発明の一実施例を図面を用いて詳細
に説明する。図１（ａ）〜（ｄ）は本発明方法による施
工手順を示すものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. 1 (a) to 1 (d) show a construction procedure according to the method of the present invention.

【００１５】まず、図１（ａ）において、鉄骨梁１０を
挟んでその両側に所定の間隔ｄをおいて対向設置された
ＰＣａ床版１２の設置端には、先端にフランジ状の頭部
１４ａを一体化した複数の頭付き鉄筋棒１４が突出配置
されている。First, in FIG. 1 (a), at the installation end of the PCa floor slabs 12 which are installed opposite to each other with a predetermined space d on both sides of the steel beam 10, a flange-shaped head 14a is provided at the tip. A plurality of headed reinforcing bar bars 14 that are integrated with each other are arranged in a protruding manner.

【００１６】各鉄筋棒１４の配置間隔はＰＣａ床版１２
同士が向き合った状態である程度接近して平行にずれた
位置に組み合わされ、しかも梁１０の頂部中心にその長
手方向に沿って突出状態に配列されるスタッド１６が前
記各鉄筋棒１４の組みの中央に位置するように設定され
ている。The spacing between the reinforcing bars 14 is the PCa floor slab 12
The studs 16 which are assembled in positions where they are close to each other and are parallel to each other in a state where they face each other and are arranged in a projecting state along the longitudinal direction at the center of the top of the beam 10 are in the center of the set of the reinforcing rods 14. Is set to be located in.

【００１７】また各鉄筋棒１４の長さは頭部１４ａがス
タッド１６を越えて互いに相手側ＰＣａ床版１２の端部
近傍に到達する長さに設定され、これによって各ＰＣａ
床版１２の端部は所定の定着長さの設置しろを確保した
状態で梁１０上に所定間隔ｄの溝部１２ａを設けて対向
設置される。The length of each rebar 14 is set so that the heads 14a pass over the studs 16 and reach the vicinity of the ends of the mating PCa floor slabs 12 with each other.
The end portions of the floor slab 12 are installed opposite to each other with the groove portions 12a having a predetermined distance d provided on the beam 10 in a state where an installation margin of a predetermined fixing length is secured.

【００１８】この鉄筋棒１４のＰＣａ床版１２に対する
定着は、図２（ａ）に示すように、ＰＣａ床版１２の内
部でＪ字形に曲折されたアンカーボルト型１４−１とす
るか、図２（ｂ）に示すように異形鉄筋型１４−２とす
るか、図２（ｃ）に示すように両側に頭部１４ａを一体
化した両側頭付き型１４−３とすることによってＰＣａ
床版１２に定着を取ることができる。The fixing of the reinforcing bar 14 to the PCa floor slab 12 is performed by using an anchor bolt type 14-1 bent in a J shape inside the PCa floor slab 12 as shown in FIG. The deformed rebar type 14-2 as shown in FIG. 2 (b) or the double-sided headed type 14-3 in which the heads 14a are integrated on both sides as shown in FIG. 2 (c) is used to form PCa.
The floor slab 12 can be fixed.

【００１９】なお、図においては説明の簡略化のために
各ＰＣａ床版１２でそれぞれ３本の鉄筋棒１４を配筋し
た場合について説明したが、これ以上本数を多くても良
いことは勿論である。また、各ＰＣａ床版１２の設置手
順は、両方同時であっても、一方を梁１０上に設置して
から他方を設置するのであっても良く、施工の段取りの
都合に応じていずれも採用できる。In the figure, for the sake of simplification of description, the case where three reinforcing bars 14 are arranged in each PCa floor slab 12 has been described, but it is needless to say that the number may be larger. is there. Further, the installation procedure of each PCa floor slab 12 may be simultaneous, or one of them may be installed on the beam 10 and then the other, and either of them may be adopted depending on the convenience of the work setup. it can.

【００２０】設置作業後、図１（ｂ）に示すごとくスタ
ッド１６を挟んでその両側に一対の鉄筋１８を梁１０の
長手方向に沿って平行に配筋し、各鉄筋棒１４との交叉
部分を結束線２０などを介して仮止め固定する。すなわ
ちこの状態では、一方のＰＣａ床版１２がずれて梁１０
から脱落しようとしても鉄筋１８は頭部１４ａとスタッ
ド１６との間に挾持された状態でこれ以上のズレが阻止
される。After the installation work, as shown in FIG. 1 (b), a pair of reinforcing bars 18 are arranged on both sides of the stud 16 so as to be parallel to each other along the longitudinal direction of the beam 10 so as to intersect with each reinforcing bar 14. Is temporarily fixed through the binding wire 20 or the like. That is, in this state, one PCa floor slab 12 is displaced and the beam 10
Even if the reinforcing bar 18 is attempted to fall from the inside, the rebar 18 is held between the head 14a and the stud 16 and further displacement is prevented.

【００２１】その後同一手順により図１（ｃ）に示すよ
うに幅方向にＰＣａ床版１２を敷き並べ、対抗するＰＣ
ａ床版１２の間に形成されている溝部１２ａにモルタル
あるいはコンクリート２２を流し込めば、鉄筋棒１４及
び鉄筋１８を縦横の強度部材として両ＰＣａ床版１２を
梁１０上に一体に接合する。Thereafter, the PCa floor slabs 12 are laid side by side in the width direction as shown in FIG.
When mortar or concrete 22 is poured into the groove 12a formed between the a floor slabs 12, both the PCa floor slabs 12 are integrally joined to the beam 10 by using the reinforcing bars 14 and the reinforcing bars 18 as longitudinal and lateral strength members.

【００２２】[0022]

【発明の効果】以上実施例によって詳細に説明したよう
に、本発明にかかる梁−スラブの接合方法にあっては、
鉄筋棒の頭部がスタッドを越えた位置で各ＰＣａ床版の
設置がなされ、両ＰＣａ床版は交互に設置しても両方同
時に設置しても鉄筋棒はスタッドを挟んで交互に配置で
き施工上の段取り等の手間がない利点がある。As described above in detail with reference to the embodiments, in the beam-slab joining method according to the present invention,
Each PCa floor slab is installed at the position where the head of the reinforcing bar crosses the stud. Both PCa floor slabs can be installed alternately or both can be installed at the same time. There is an advantage that there is no trouble such as setup.

【００２３】また鉄筋の配筋，結束により、両ＰＣａ版
は梁上に仮止めされるので、脱落等の惧れを未然に防止
できる利点がある。Further, since both PCa plates are temporarily fixed on the beam by the arrangement and binding of the reinforcing bars, there is an advantage that the fear of dropping out can be prevented.

【００２４】さらに鉄筋棒及び鉄筋は充填材に一体化さ
れ、縦横の強度部材として活用されるため、特に小梁等
のようにＰＣａ床版の梁に対する設置しろを十分に取れ
ない場合においても、十分な安全な構造となる利点があ
る。Further, since the reinforcing bars and reinforcing bars are integrated with the filling material and utilized as longitudinal and lateral strength members, even when the installation margin for the beams of the PCa floor slab cannot be sufficiently obtained, such as a small beam, etc. There is an advantage that the structure is sufficiently safe.

【図面の簡単な説明】[Brief description of drawings]

【図１】（ａ）〜（ｃ）は本発明ＰＣａ床版の施工手順
を示す説明図である。1A to 1C are explanatory views showing a procedure for constructing a PCa floor slab of the present invention.

【図２】（ａ）〜（ｃ）は頭付き鉄筋棒のＰＣａ床版に
対する定着のための構造例を示す説明図である。2A to 2C are explanatory views showing a structural example for fixing a headed reinforcing bar to a PCa floor slab.

【図３】（ａ）〜（ｃ）は従来のＰＣａ床版の接合構造
を示す説明図である。3A to 3C are explanatory views showing a joint structure of a conventional PCa floor slab.

【符号の説明】[Explanation of symbols]

１０ 鉄骨梁 １２ ＰＣａ床版 １２ａ 溝部 １４ 鉄筋棒 １４ａ 頭部 １６ スタッド １８ 鉄筋 ２０ 結束線 ２２ 充填材（モルタルまたはコンクリート） 10 Steel Beam 12 PCa Floor Slab 12a Groove 14 Reinforcing Bar 14a Head 16 Stud 18 Reinforcing Bar 20 Bonding Wire 22 Filling Material (Mortar or Concrete)

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 頂部中心にあって長手方向に多数のスタ
ッドを一列または複数列に突出させた梁の上面両側に前
記スタッドを挟んで一対のプレキャスト床版を対向設置
して梁に接合する方法において、 前記両プレキャスト床版の設置端には予め複数の頭付き
鉄筋棒を突出するとともに、前記両プレキャスト床版の
設置状態で、前記各鉄筋棒の頭部先端が前記スタッドを
越えて相手側プレキャスト床版近傍に交互に到達すべく
配置してなり、前記両プレキャスト床版の設置後前記ス
タッドの両側において各鉄筋棒と交叉して平行な少くと
も一対の鉄筋を配筋，結束し、その後前記両プレキャス
ト床版の間に形成されている溝部にモルタルまたはコン
クリートからなる充填材を充填することを特徴とする梁
−スラブの接合方法。1. A method in which a pair of precast floor slabs are installed facing each other with the studs sandwiched on both sides of the upper surface of a beam having a large number of studs projecting in one or more rows in the longitudinal direction at the center of the top and joined to the beams. In the installation ends of the both precast floor slabs, a plurality of headed reinforcing bar rods are projected in advance, and in the installed state of the both precast floor slabs, the head ends of the respective reinforcing rod bars cross the studs and the other side. Arranged so as to alternately reach the vicinity of the precast floor slab, after the installation of the both precast floor slabs, arranging and binding at least a pair of parallel reinforcing bars crossing each reinforcing bar on both sides of the stud, and then A beam-slab joining method, characterized in that the groove formed between the both precast floor slabs is filled with a filler made of mortar or concrete.