JP3694875B2 - Full PC floor board fixing method - Google Patents

Full PC floor board fixing method Download PDF

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JP3694875B2
JP3694875B2 JP2000403020A JP2000403020A JP3694875B2 JP 3694875 B2 JP3694875 B2 JP 3694875B2 JP 2000403020 A JP2000403020 A JP 2000403020A JP 2000403020 A JP2000403020 A JP 2000403020A JP 3694875 B2 JP3694875 B2 JP 3694875B2
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full
reinforcing bars
floor board
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cotter
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JP2002161603A (en
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哲雄 持田
克也 岡田
正治 杉原
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Takenaka Corp
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Takenaka Corp
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Description

【０００１】
【発明の属する技術分野】
この発明は、フルプレキャストコンクリート造の床板（この明細書ではフルＰＣ床板という）同士の固着及びフルＰＣ床板と建物躯体の各種梁との固着を行な固着方法に関する。
【０００２】
【従来の技術】
従来のＰＣ床板同士の接合及びＰＣ床板と建物躯体の鉄骨梁との接合を行なうＰＣ床板の接合方法には、例えば、次の▲１▼〜▲３▼のようなものがある。
▲１▼ ２枚のＰＣ床板を、それらの端面を対向させ、前記端面間のコンクリートの打設用空間に各床板中に埋設した鉄筋の前記端面から突出する接合用部分を位置させ、前記打設用空間にコンクリートを打設して各ＰＣ床板を互いに接合する方法において、前記ＰＣ床板はその端面から突出する鉄筋が側面視でフープ状の接合用部分を厚さ方向に２段に備えており、一方のＰＣ床板の２段の鉄筋のフープ状の接合用部分と他方のＰＣ床板の２段の鉄筋のフープ状の接合用部分とが側面視で一部重なりかつ平面視で間隔をおいて位置するように、２枚のＰＣ床板を対向させて配置し、前記打設用空間に位置する鉄筋の各フープ状の接合用部分の上側及び下側又は上側、内側及び下側に多数本の鉄筋を各床板の端縁と平行に配筋し、前記打設用空間にコンクリートを打設して各ＰＣ床板を互いに接合するＰＣ床板の接合方法（特開平６−１０８４２０号公報参照）。
▲２▼ ２枚のＰＣ床板を、それらの端面を対向させ、前記端面間のコンクリートの打設用空間に各床板中に埋設した鉄筋の前記端面から突出する接合用部分を位置させ、前記打設用空間にコンクリートを打設して各ＰＣ床板を互いに接合する方法において、前記床板はその端面から突出する鉄筋が側面視で矩形フープ状の接合用部分を備えており、一方の床板の矩形フープ状の接合用部分と他方の床板の矩形フープ状の接合用部分とが側面視で一部が重なり且つ平面視で間隔をおいて位置するように、２枚のＰＣ床板を対向させて配置し、側面視で一部が重なったことにより形成される矩形フープ状の接合用部分により囲まれた空間部分内に２枚の長い支圧板を前記接合用部分の先端の矩形フープ状の部分の内側に接して各床板の端面と平行に配置し、前記打設用空間に位置する鉄筋の矩形フープ状の接合用部分の上側及び下側に多数本の鉄筋を各床板の端面と平行に配筋し、前記打設用空間にコンクリートを打設して各ＰＣ床板を互いに接合するＰＣ床板の接合方法（特開平８−３２６１９７号公報参照）。
▲３▼ 対のＰＣ床板を鉄骨梁上にそれらの端面を対向させ、前記端面間のコンクリートの打設用空間に各床板中に埋設した鉄筋の前記端面から突出する接合用部分を位置させ、前記打設用空間にコンクリートを打設して各ＰＣ床板を互いに接合する方法において、ＰＣ床板はその各辺部の端面から突出して平面視で前記各辺部の端面を結ぶ直線に対して所定の角度を保って傾斜する多数本の鉄筋の接続用部分を備えており、前記鉄骨梁の上面にその長手方向に間隔をおいて多数の頭付きスタッドを植設し、対のＰＣ床板を、一方のＰＣ床板の傾斜した鉄筋の接続用部分と他方のＰＣ床板の傾斜した鉄筋の接続用部分とが平面視で互いに隣接して平行になり且つ同じ平面上に位置するように、建物躯体の鉄骨梁上に載置し、互いに隣接して平行になりかつ同じ平面上に位置する対の鉄筋の接続用部分にそれらの長手方向に間隔をおいて二つの鋼製スリーブを嵌め、各鋼製スリーブの中央の孔にウェッジを圧入して対の鉄筋の接続用部分を接続し、前記打設用空間にコンクリートを打設してＰＣ床板を鉄骨梁に接合するとともにＰＣ床板同士を互いに接合するＰＣ床板の接合方法（特開平２０００−１７７６４号公報参照）。
【０００３】
【発明が解決しようとする課題】
従来の上記の▲１▼のＰＣ床板の接合方法では、一方のＰＣ床板の鉄筋のフープ状の接合用部分と他方のＰＣ床板の鉄筋のフープ状の接合用部分とを打設されたコンクリートを介して接合するようになっており、その接合は鉄筋の接合用部分同士を直接接合するものに比して不充分なものであり、そのため、コンクリートの打設用空間に位置する鉄筋のフープ状の接合用部分の上側及び下側又は上側、内側及び下側に多数本の鉄筋をＰＣ床板の端縁と平行に配筋する必要があり、また、鉄筋の接合用部分をフープ状に加工するのに多くの工数を要し、そのうえ、側面視で一部を重ねたことにより形成されるフープ状の接合用部分により囲まれた空間部分内への複数本の長い鉄筋の挿入に多くの人手を要する欠点がある。
従来の前記の▲２▼のＰＣ床板の接合方法は、一方のＰＣ床板の鉄筋の矩形フープ状の接合用部分と他方のＰＣ床板の鉄筋の矩形フープ状の接合用部分とを、これらの部分に接触する長い支圧板と打設されたコンクリートとを介して接合するものであり、その接合は鉄筋の接合用部分同士を直接接合するものに比して不充分なものであり、そのため、コンクリートの打設用空間に位置する鉄筋の矩形フープ状の接合用部分の上側及び下側に多数本の鉄筋をＰＣ床板の端面と平行に配筋する必要があり、また、鉄筋の接合用部分を矩形フープ状に加工するのに多くの工数を要し、そのうえ、側面視で一部を重ねることにより形成される矩形フープ状の接合用部分により囲まれた空間部分内への２枚の長い支圧板の挿入に多くの人手を要する欠点がある。
前記の従来の▲３▼のＰＣ床板の接合方法は、互いに隣接して平行になりかつ同じ平面上に位置する対の鉄筋の接続用部分にそれらの長手方向に間隔をおいて二つの鋼製スリーブを嵌め、対の鉄筋の接続用部分に嵌めた各鋼製スリーブの中央の孔にウェッジを圧入して、対の鉄筋の接続用部分を接続するため、鉄筋の接続用部分の長さが長くなり、長い鉄筋の接続用部分を収容するコンクリートの打設用空間の幅を大きくする必要があり、フランジの幅の狭い梁に適用しにくい欠点があり、また、鉄筋の接続用部分をＰＣ床板の各辺部の端縁を結ぶ直線に対して一定の角度を保って傾斜させるのに多くの工数を要する欠点がある。
この発明の解決しようとする課題は、従来技術の上記のような欠点を有しない建物躯体の各種梁へのフルＰＣ床板の固着方法及びフルＰＣ床板同士の固着方法を提供すること、換言すると、フルＰＣ床板中に埋め込んだ鉄筋の前記床板の端面から突出する接続用部分を鋼製スリーブとウェッジの圧入とによる接続工法により接続しても、隣接して配置するフルＰＣ床板間の隙間を小さくすることができ、フルＰＣ床板の建物躯体の各種梁への固着作業の施工性がよく、建物躯体の梁上にデッキプレートを配設して該デッキプレート上に鉄筋コンクリート造の床板を構築するデッキプレート床板構造と同等の構造特性を有する床板構造が得られる建物躯体の各種梁へのフルＰＣ床板の固着方法及びフルＰＣ床板同士の固着方法を提供することにある。
【０００４】
【課題を解決するための手段】
この発明のフルＰＣ床板を建物躯体の鉄骨梁へ固着する場合のフルＰＣ床板の固着方法は、フルＰＣ床板として、フルＰＣ床板の形状を平面視で長辺部及び短辺部を備えた矩形状にし、フルＰＣ床板の長辺部及び短辺部の少なくとも一つの辺部を平面視で波形状のコッタとし、フルＰＣ床板中に埋め込まれた多数本の鉄筋の端部を波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出させて鉄筋の接続用部分として製作したものを使い、互いに隣接する一方のフルＰＣ床板の波形状のコッタの頂部が互いに隣接する他方のフルＰＣ床板の波形状のコッタ部の頂部に対面し、かつ前記一方のフルＰＣ床板の波形状のコッタの谷底部が前記他方のフルＰＣ床板の波形状の谷底部に対面するように、複数のフルＰＣ床板の前記辺部を建物躯体の鉄骨梁上に載置し、対面する各フルＰＣ床板の前記各辺部間にコンクリートの打設用空間を形成し、互いに隣接する一方の各フルＰＣ床板の波形状のコッタの各谷底部から突出する鉄筋の接続用部分と他方のフルＰＣ床板の波形状のコッタの各谷底部から突出する接続用部分とが接近して平行に位置するようにし、接近して平行にされた２本の鉄筋の接続用部分に一個の鋼製スリーブを嵌め、各鋼製スリーブの中央の孔にウェッジを圧入して２本の鉄筋の接続用部分を接続し、前記打設用空間内の鉄骨梁の上面に頭付きのスタッドの基部を溶接し、前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面の近傍の鉄筋の接続用部分の上側又は下側に、各鋼製スリーブを挟んで２本の直線状の補強鉄筋を、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面に沿って、フルＰＣ床板の前記辺部と平行に配筋し、或いは前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面から離れた鉄筋の接続用部分の上側又は下側に、各鋼製スリーブとの間に所定の距離をおいて各鋼製スリーブを取り囲むようにリング状の補強鉄筋をそれぞれ配筋して、前記打設用空間内にコンクリートを打設し、各フルＰＣ床板を鉄骨梁に固着するとともにフルＰＣ床板同士を固着することを特徴とするものである。
【０００５】
この発明のフルＰＣ床板を建物躯体のフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁へ固着する場合のフルＰＣ床板の固着方法は、フルＰＣ床板として、フルＰＣ床板の形状を平面視で長辺部及び短辺部のある矩形状にし、その長辺部及び短辺部の少なくとも一つの辺部を平面視が波形状のコッタとし、フルＰＣ床板中に埋め込まれた多数本の鉄筋の端部を波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出させて鉄筋の接続用部分として製作したものを使い、フルＰＣＲＣ梁又はフルＰＣＳＲＣ梁として、梁主筋、肋筋及び連結用鉄筋又は梁主筋、肋筋、梁鉄骨及び連結用鉄筋をコンクリート中に埋設し、前記コンクリートの部分の上面の梁の長手方向に間隔をおいた多数の箇所に前記連結用鉄筋の一部を露出させ、連結用鉄筋の露出させてある部分をフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁上にフルＰＣ床板が載置された際のフルＰＣ床板の鉄筋の接続用部分よりも下方にあるようにし、かつ前記上面に多数の凹部又は粗面部を設けて製作したものを使い、互いに隣接する一方のフルＰＣ床板の波形状のコッタの頂部が互いに隣接する他方のフルＰＣ床板の波形状のコッタの頂部に対面し、かつ前記一方のフルＰＣ床板の波形状のコッタの谷底部が前記他方のフルＰＣ床板の波形状の谷底部に対面するように、複数のフルＰＣ床板の前記辺部を建物躯体のフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁上に載置し、対面する各フルＰＣ床板の前記辺部間にコンクリートの打設用空間を形成し、隣接する一方のフルＰＣ床板の波形状のコッタの谷底部から突出する鉄筋の接続用部分と他方のフルＰＣ床板の波形状のコッタの谷底部から突出する鉄筋の接続用部分とが接近して互いに平行になるようにし、接近して平行にされた２本の鉄筋の接続用部分に一個の鋼製スリーブを嵌め、鋼製スリーブの中央の孔にウェッジを圧入して２本の鉄筋の接続用部分を接続し、前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面の近傍の鉄筋の接続用部分の上側又は下側に、各鋼製スリーブを挟んで２本の直線状の補強鉄筋を、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面に沿って、フルＰＣ床板の前記辺部と平行に配筋し、或いは前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面から離れた鉄筋の接続用部分の上側又は下側に、各鋼製スリーブとの間に所定の距離をおいて各鋼製スリーブを取り囲むようにリング状の補強鉄筋をそれぞれ配筋して、前記打設空間内にコンクリートを打設し、各フルＰＣ床板をフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁に固着するとともにフルＰＣ床板同士を固着することを特徴とするものである。
【０００６】
この発明のフルＰＣ床板を建物躯体のハーフＰＣＲＣ梁又はハーフＰＣＳＲＣ梁へ固着する場合のフルＰＣ床板の固着方法は、フルＰＣ床板として、フルＰＣ床板の形状を平面視で長辺部及び短辺部のある矩形状にし、フルＰＣ床板中に埋め込まれた多数本の鉄筋の端よりの部分を上記長辺部及び短辺部の少なくとも一つの辺部の端面から該端面に対して略直角に突出させて鉄筋の接続用部分として製作したものを使い、ハーフＰＣＲＣ梁又はハーフＰＣＳＲＣ梁として、梁主筋及び肋筋又は梁主筋、肋筋及び梁鉄骨をコンクリート中に埋設し、前記コンクリートの部分の上面から前記梁主筋及び肋筋梁の上側の部分を露出させ、前記梁主筋及び肋筋梁の露出させてある部分をフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁上にフルＰＣ床板が載置された際のフルＰＣ床板の鉄筋の接続用部分よりも下方にあるようにし、前記上面に粗面部を形成して製作したものを使い、互いに隣接する一方のフルＰＣ床板の辺部と他方のフルＰＣ床板の辺部とが前記梁主筋及び肋筋梁の露出部を挟んで対面するように、複数のフルＰＣ床板の前記辺部を建物躯体のハーフＰＣＲＣ梁又はハーフＰＣＳＲＣ梁上に載置して、対面する各フルＰＣ床板の各辺部間にコンクリートの打設用空間を形成し、互いに隣接する一方のフルＰＣ床板の辺部の端面から突出する鉄筋の接続用部分と、他方のフルＰＣ床板の辺部の端面から突出する鉄筋の接続用部分とが接近して互いに平行になるようにし、接近して平行にされた２本の鉄筋の接続用部分に一個の鋼製スリーブを嵌め、鋼製スリーブの中央の孔にウェッジを圧入して２本の鉄筋の接合用部分を接続して、前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面の近傍の鉄筋の接続用部分の上側又は下側に、各鋼製スリーブを挟んで２本の直線状の補強鉄筋を、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面に沿って、フルＰＣ床板の前記辺部と平行に配筋し、或いは前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面から離れた鉄筋の接続用部分の上側又は下側に、各鋼製スリーブとの間に所定の距離をおいて各鋼製スリーブを取り囲むようにリング状の補強鉄筋をそれぞれ配筋して、打設空間内にコンクリートを打設し、各フルＰＣ床板をハーフＰＣＲＣ梁又はハーフＰＣＳＲＣ梁に固着するとともにフルＰＣ床板同士を固着することを特徴とするものである。
【０００７】
この発明のフルＰＣ床板同士を互いに固着する場合のフルＰＣ床板の固着方法は、フルＰＣ床板として、フルＰＣ床板の形状を平面視で長辺部及び短辺部を備えた矩形状にし、その長辺部及び短辺部の少なくとも一つの辺部を平面視で波形状のコッタとし、フルＰＣ床板中に埋め込まれた多数本の鉄筋の端よりの部分を波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出させて鉄筋の接続用部分として製作したものを使い、対のフルＰＣ床板の波形状のコッタのある辺部を互いに対面させて配置して、フルＰＣ床板の辺部間にコンクリートの打設用空間を形成し、一方のフルＰＣ床板のコッタの波形状の頂部が他方のフルＰＣ床板のコッタの波形状の頂部に対面し、かつ一方のフルＰＣ床板のコッタの波形状の谷底部が他方のフルＰＣ床板の波形状の谷底部に対面するようにし、一方のフルＰＣ床板の波形状のコッタの各谷底部から突出する鉄筋の接続用部分と他方のフルＰＣ床板の波形状のコッタの各谷底部から突出する鉄筋の接続用部分とが接近して互いに平行になるようにし、接近して平行にされた２本の鉄筋の接続用部分に一個の鋼製スリーブを嵌め、鋼製スリーブの中央の孔にウェッジを圧入して２本の鉄筋の接続用部分を接続し、前記打設用空間の下側に型枠板を配置して、前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面の近傍の鉄筋の接続用部分の上側又は下側に、各鋼製スリーブを挟んで２本の直線状の補強鉄筋を、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面に沿って、フルＰＣ床板の前記辺部と平行に配筋し、或いは前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面から離れた鉄筋の接続用部分の上側又は下側に、各鋼製スリーブとの間に所定の距離をおいて各鋼製スリーブを取り囲むようにリング状の補強鉄筋をそれぞれ配筋して、前記打設空間内にコンクリートを打設し、フルＰＣ床板同士を固着して一体化することを特徴とするものである。
【０００８】
好ましい発明の形態においては、フルＰＣ床板として、次の（Ａ）〜（Ｃ）のフルＰＣ床板を使う。
（Ａ）フルＰＣ床板の形状が平面視で長辺部及び短辺部のある矩形状とされ、その長辺部及び短辺部の少なくとも一つの辺部が平面視で波形状のコッタとされ、フルＰＣ床板中に下側の鉄筋及び上側の鉄筋が埋め込まれ、下側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、少なくとも上側の鉄筋を構成する格子状鉄筋の横鉄筋及び又は縦鉄筋の端よりの部分を波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出させて鉄筋の接続用部分としてあるフルＰＣ床板。
（Ｂ）フルＰＣ床板として、フルＰＣ床板の形状が平面視で長辺部及び短辺部のある矩形状とされ、その長辺部及び短辺部の少なくとも一つの辺部が平面視で波形状のコッタとされ、フルＰＣ床板中に下側の鉄筋及び上側の鉄筋が埋め込まれ、下側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋を構成する格子状鉄筋の横鉄筋又は縦鉄筋の端よりの部分が波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出して鉄筋の接続用部分とされてあり、下側の鉄筋を構成する格子状鉄筋の横鉄筋又は縦鉄筋の端が波形状のコッタの各頂部に位置しており、多数のＵ型補強鉄筋が前記辺部の近傍の波形状のコッタの頂部に相対する下側の鉄筋の延在域と上側の鉄筋の延在域とにまたがって配され、各Ｕ型補強鉄筋のＵ型の二つの辺部分を含む面をフルＰＣ床板の上側又は下側の面に対して直角になるように配置され、各Ｕ型補強鉄筋のＵ型の一方の辺部分が下側の鉄筋の延在域に接して前記辺部と交差する方向に向けられ、各Ｕ型補強鉄筋のＵ型の他方の辺部分が上側の鉄筋の延在域に接して前記辺部と交差する方向に向けられているフルＰＣ床板。
（Ｃ）フルＰＣ床板として、フルＰＣ床板の形状が平面視で長辺部及び短辺部のある矩形状とされ、その長辺部及び短辺部の少なくとも一つの辺部が平面視で波形状のコッタとされ、フルＰＣ床板中に下側の鉄筋及び上側の鉄筋が埋め込まれ、下側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋を構成する格子状鉄筋の横鉄筋又は縦鉄筋の端よりの部分が波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出して鉄筋の接続用部分とされてあり、フルＰＣ床板の鉄筋の接続用部分が波形状のコッタの谷底部から突出させてある辺部にあっては、フルＰＣ床板の下半分の波形状のコッタの端面とフルＰＣ床板の上半分の波形状のコッタの端面との間に略水平な段部があり、フルＰＣ床板の下半分の波形状のコッタの端面が前記段部の分だけフルＰＣ床板の上半分の波形状のコッタの端面から突出させてあり、前記鉄筋の接続用部分が上半分の波形状のコッタの谷底部から突出しているフルＰＣ床板。
【０００９】
また、この発明においては、対のフルＰＣ床板の各辺部間の梁の上側のコンクリートの打設用空間内において、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面の近傍の鉄筋の接続用部分の上側又は下側に、前記接続用部分の接続に使った各鋼製スリーブを挟んで２本の直線状の補強鉄筋を、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面に沿って、フルＰＣ床板の各辺部と平行に配筋し、或いは、前記接続用部分の接続に使った各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面から離れた鉄筋の接続用部分の上側又は下側に、各鋼製スリーブとの間に所定の距離をおいて各鋼製スリーブを取り囲むように、リング状の補強鉄筋をそれぞれ配筋するが、前記の直線状の補強鉄筋の配筋と、前記のリング状の補強筋の配筋とを併用する場合もある。
【００１０】
鉄筋の接続用部分の接続位置をコンクリートの打設用空間の中央位置より前記空間の幅方向にずらして、幅の狭い梁等の場合においても、接続作業に必要なスペースを充分に確保したい場合には、一方のフルＰＣ床板の端面から突出する鉄筋の接続用部分の長さを少なくとも鋼製スリーブの長さの２倍に少々の余分の長さを加えた長さ以上にし、他方のフルＰＣ床板の端面から突出する鉄筋の接続用部分の長さを少なくとも鋼製スリーブの長さに少々の余分の長さを加えた長さ以上にし、一方のフルＰＣ床板を所定位置に配置した状態において、一方のフルＰＣ床板の長い鉄筋の接続用部分に鋼製スリーブが嵌められ、これが他方のフルＰＣ床板の所定位置への配置の際に邪魔にならない位置の鉄筋の接続用部分に拘束線等にて固定された状態におかれてから、他方のフルＰＣ床板を所定位置に配置して、鋼製スリーブの拘束線等による接続用部分への固定を解き、鋼製スリーブを他方のフルＰＣ床板の短い鉄筋の接続用部分の先端よりの部分に移動させながら、鋼製スリーブを他方のフルＰＣ床板の鉄筋の接続用部分の先端よりの部分にも嵌め、鋼製スリーブを他方のフルＰＣ床板側に偏した位置にして、鋼製スリーブの中央の孔にウェッジを圧入し、長い鉄筋の接続用部分と短い鉄筋の接続用部分とを接続する。
【００１１】
【実施例】
実施例１は、図１〜図１９に示され、この発明を鉄骨造の建物躯体の鉄骨梁にフルＰＣ床板を固着する場合に適用した例である。
フルＰＣ床板１０は、鉄筋コンクリート造で下面１０ａ及び上面１０ｂが平らな同じ厚さの板体で構成され、その平面視の形状は、図１に示すように、長辺部Ａと短辺部Ｂとからなる矩形状になっており、各辺部Ａ，Ｂは平面視で波形状のコッタを備えている。
各辺部Ａ，Ｂのコッタを構成する波形状は、例えば、図４に示すように、同形の多数の２等辺三角形（図示のものは２等辺直角三角形）Ｔａの各底辺Ｔａ２を直線Ｓｌ上に続けて並べて各等辺部Ｔａ１からなる波形を形成し、この波形の上側の尖った部分を少し前記底辺に平行な直線Ｓｌ１で切除し、かつその下側の尖った部分を少し前記底辺に平行な直線Ｓｌ２で切除し、多数の等辺部Ｔａ１の切除されない部分の直線、上側の直線Ｓｌ１及び下側の直線Ｓｌ２からなる凹凸線により構成される形状であり、あるいは、前記直線Ｓｌ１，Ｓｌ２を円弧線に替え、多数の等辺部の切除されない部分の直線、上側の円弧線及び下側の円弧線からなる凹凸線により構成される形状である。
各辺部Ａ，Ｂのコッタを構成する波形状は、上記の形状に限定するものではなく、他の形状（例えば、矩形波）であってもよい。
なお、上側の直線Ｓｌ１又は円弧線の部分が波形状の頂部１０ｐに相当し、下側の直線Ｓｌ２又は円弧線の部分が波形状の谷底部１０ｒに相当する。
【００１２】
フルＰＣ床板１０は、図１〜図３、図８〜図１０に示すように、コンクリート造で、下側の鉄筋１１、上側の鉄筋１２、Ｕ型補強鉄筋１３等で補強されている。
下側の鉄筋１１は、長辺部Ａと平行に間隔をおいて配された縦鉄筋１１ａと各縦鉄筋１１ａに対して直角にかつ間隔をおいて配された横鉄筋１１ｂとからなる格子状鉄筋で構成されられる。各縦鉄筋１１ａの両端はフルＰＣ床板１０の短辺部Ｂの波形状の頂部１０ｐの内側に位置し、各横鉄筋１１ｂの両端はフルＰＣ床板１０の長辺部Ａの波形状の頂部１０ｐの内側に位置している。
上側の鉄筋１２は、長辺部Ａと平行に間隔をおいて配された縦鉄筋１２ａと縦鉄筋１２ａに対して直角にかつ間隔をおいて配された横鉄筋１２ｂとからなる格子状鉄筋で構成されている。各縦鉄筋１２ａの両端よりの部分はフルＰＣ床板１０の短辺部Ｂの波形状の各谷底部１０ｒから所定長さだけ突出して接続用部分１２ａ１になっており、各横鉄筋１２ｂの両端よりの部分はフルＰＣ床板１０の長辺部Ａの波形状の各谷底部１０ｒから所定長さだけ突出して接続用部分１２ｂ１になっている。そして、上側の鉄筋１２の格子状鉄筋の周囲には、フルＰＣ床板１０の長辺部Ａ及び短辺部Ｂの波形状の各谷底部１０ｒを結ぶ直線に平行にかつ前記谷底部を結ぶ直線に接近して端補強鉄筋１２ｃ，１２ｄが配されている。なお、図示の例では、端補強鉄筋１２ｃの下方に下側の鉄筋１１の縦鉄筋１１ａが位置し、端補強鉄筋１２ｄの下方に下側の鉄筋１１の横鉄筋１１ｂが位置するようになっている。
【００１３】
多数のＵ型補強鉄筋１３は、図２及び図３に示すように、長辺部Ａの近傍の部分の下側の鉄筋１１の延在域と上側の鉄筋１２の延在域との間を連結するように配され、それらは、Ｕ型補強鉄筋１３のＵ型の二つの辺部１３ａ，１３ｂを含む面がフルＰＣ床１０の上下の面１０ｂ，１０ａに対して直角になるように配置される。そして、各Ｕ型補強鉄筋１３のＵ型の一方（下側）の辺部１３ａは下側の鉄筋１１の横鉄筋１１ｂを含む面と同じ平面内にあって前記横鉄筋１１ｂの端部よりの部分に接してこれと平行に配され、各Ｕ型補強鉄筋１３のＵ型の他方（上側）の辺部１３ｂの内側が上側の鉄筋１２の縦鉄筋１２ａ及び端補強鉄筋１２ｃの上側の面に接するように横鉄筋１２ａと平行に配筋される。
図２及び図３に示すフルＰＣ床１０では、多数のＵ型補強鉄筋１３を、長辺部Ａの近傍の部分においてのみ下側の鉄筋１１の延在域と上側の鉄筋１２の延在域との間にこれらを連結するように配されているが、長辺部Ａの近傍の部分だけでなく短辺部Ｂの近傍の部分においても、多数のＵ型補強鉄筋１３を下側の鉄筋１１の延在域と上側の鉄筋１２の延在域との間に同様に配筋してもよい。
なお、Ｕ型補強鉄筋１３の代わりに、下側の鉄筋１１の横鉄筋１１ｂの端部よりの部分をフルＰＣ床１０の上下の面１０ｂ，１０ａに対して直角にＵ型状に折り返して、このＵ型状に折り返した部分を補強鉄筋とすることもできる。
フルＰＣ床１０の端補強鉄筋１２ｃ，１２ｄ及びＵ型補強鉄筋１３は、フルＰＣ床１０を梁上に配置する際の補強鉄筋となる。
波形状のコッタの配置は、下側及び上側の鉄筋１１ａ，１１ｂ，１２ａ，１２ｂの間隔に合わせるのが適当であり、通常は、２００ｍｍ前後の間隔の２等辺三角形をベースにした波形状を採用すればよい。
鉄筋１１ａ，１１ｂ，１２ａ，１２ｂ，１２ｃ，１３としては、例えば、図５の（ａ）及び（ｂ）に示すような表面に凹凸のある異形鋼棒を用いる。
【００１４】
フルＰＣ床板１０の建物躯体の鉄骨造の梁１，２への固着の仕方を説明する。
建物躯体は、その基礎上に多数の鉄骨造等の柱が建てられ、各柱間にＨ形鋼の大梁１がそれぞれ配され、各大梁１の両端が柱に接合され、各大梁１間にＨ形鋼の小梁２がそれぞれ配され、各小梁２の両端が大梁１に接合されている。
多数のフルＰＣ床板１０を、建物躯体の鉄骨建方後に、梁１，２上に後打ちコンクリートの打設空間をあけて敷設する。
多数のフルＰＣ床板１０は、それらの各辺部Ａ，Ｂを大梁１及び小梁２の上側のフランジ１ａ，２ａの上面１ａ１，２ａ１上に載置して、敷設される。図６〜図１１に示す例では、フルＰＣ床板１０の長辺部Ａが小梁２上にその短辺部Ｂが大梁１上に載置されている。
対のフルＰＣ床板１０の対向する長辺部Ａは以下のようにして小梁２に固着する。図６，図８〜図１１に示すように、一方のフルＰＣ床板１０の長辺部Ａの波形状の谷底部と他方のフルＰＣ床板１０の長辺部Ａの波形状の谷底部とが間隔をおいて対向し、両方のフルＰＣ床板１０の波形状の谷底部から突出する上側の鉄筋１２の横鉄筋１２ｂの接続用部分１２ｂ１が小さい間隔をおいて互いに平行になるようにする。
【００１５】
両方のフルＰＣ床板１０の平面視で平行に配置され正面視で重ねられている各横鉄筋１２ｂの接続用部分１２ｂ１に一つの鋼製スリーブＳｖを嵌め、油圧工具を使って各鋼製スリーブＳｖの中央部の孔Ｓｖ２にウェッジＷｇを圧入し、横鉄筋１２ｂの接続用部分１２ｂ１の外周面の凹凸部を鋼製スリーブＳｖに食い込ませることにより対の接続用部分１２ｂ１を一体化させて接続する。しかる後、小梁２のフランジ２ａの上面２ａ１の所定位置に頭付きスタッドＳｄの基部を溶接し、フルＰＣ床板１０間の打設空間Ｓｐ１にコンクリートを打設して、両方のフルＰＣ床板１０の長辺部Ａを小梁２に固着しかつ両方のフルＰＣ床板１０の長辺部Ａ同士を一体化し、接合部の施工を完了する。
なお、鋼製スリーブＳｖは、図１２及び図１３に示すように、２本の鉄筋の接続用部分が挿入される孔Ｓｖ１とその中央にウェッジが圧入される孔Ｓｖ２とを備えている。
頭付きスタッドＳｄとしては、ＪＩＳＢ１１９８に適合する頭付きスタッドのうち、溶接後の長さが軸径の４倍以上のものを用いる。
【００１６】
同様のやり方にて隣接する対のフルＰＣ床板１０の短辺部Ｂを大梁１に固着すると同時に短辺部Ｂ同士を接合する。図７及び図１１に示すように、大梁１の上側のフランジ１ａの上面１ａ１上において、一方のフルＰＣ床板１０の短辺部Ｂと他方のフルＰＣ床板１０の短辺部Ｂとは、所定の間隔をおいて対向し、両方のフルＰＣ床板１０の短辺部Ｂの波形状の谷底部から突出する縦鉄筋１２ａの接続用部分１２ａ１が平面視で小さい間隔をおいて互いに略平行に配置されている。対の縦鉄筋１２ａの接続用部分１２ａ１は、それらを一つの鋼製スリーブＳｖの孔Ｓｖ１に挿通し、鋼製スリーブＳｖの中央の孔Ｓｖ２へウェッジＷｇを圧入して、互いに接続される。頭付きスタッドＳｄは、例えば、図１１に示すように、一方のフルＰＣ床板１０の波形状の凹凸とこれと対面する他方のフルＰＣ床板１０の波形状の凹凸とにより囲まれる一つの空間に、例えば、各床板１０の鉄筋の接続用部分１２ａ１の先端の近傍にそれぞれ１本ずつ植設する。それから、打設空間Ｓｐ２にコンクリートを打設して、両方のフルＰＣ床板１０の短辺部Ｂを大梁１に固着しかつ各フルＰＣ床板１０の短辺部Ｂ同士を固着する。
【００１７】
フルＰＣ床板１０の上側の鉄筋の接続用部分１２ａ１，１２ｂ１の鋼製スリーブＳｖの孔Ｓｖ１への挿入の仕方を説明する。
対向する対のフルＰＣ床板１０のうちの一方を梁１，２上に敷設した後、谷底部より突出する各接続用部分１２ａ１，１２ｂ１に鋼製スリーブＳｖの孔Ｓｖ１を嵌め、これを拘束線等にて接続用部分１２ａ１，１２ｂ１の邪魔にならない位置に固定し、他方のフルＰＣ床板１０を梁１，２上に敷設した後、鋼製スリーブＳｖの拘束線等による接続用部分１２ａ１，１２ｂ１への固定を解き、鋼製スリーブＳｖを接続用部分１２ａ１，１２ｂ１の先端よりの部分に移動させながら、鋼製スリーブＳｖの孔Ｓｖ１を他方のフルＰＣ床板１０の谷底部より突出する接続用部分１２ａ１，１２ｂ１の先端よりの部分に嵌める。それから、図８、図９及び図１１に示すように、梁１，２の上側のフランジの幅方向の中央位置において、鋼製スリーブＳｖの中央部の孔Ｓｖ２に圧入器具を用いてウェッジＷｇを所定の深さまで圧入する。
なお、接続用部分１２ａ１，１２ｂ１同士の接続位置は、梁の幅方向の中央位置（コンクリートの打設空間の中央位置）に限るものではなく、いずれかのフルＰＣ床板の側に偏してもよい。接続用部分１２ａ１，１２ｂ１の接続位置を、梁の幅方向の中央位置より幅方向にずらすと、梁の幅が狭い場合でも、接続作業に必要なスペースを容易に確保することができる。
【００１８】
鉄筋の接続用部分の接続位置を梁の中央位置より幅方向にずらす場合には、例えば、一方のフルＰＣ床板の端面から突出する鉄筋の接続用部分の長さを少なくとも鋼製スリーブＳｖの長さＬの２倍に少々の余分の長さを加えた長さ以上にし、他方のフルＰＣ床板の端面から突出する鉄筋の接続用部分の長さを少なくとも鋼製スリーブＳｖの長さＬに少々の余分の長さを加えた長さ以上にして、一方のフルＰＣ床板を梁上に載置してから、一方のフルＰＣ床板の長い鉄筋の接続用部分に鋼製スリーブＳｖの孔を嵌め、これを図８に２点鎖線で示すような他方のフルＰＣ床板の梁上への載置に邪魔にならない位置に移動して、その位置の鉄筋の接続用部分に拘束線等にて固定してから、他方のフルＰＣ床板を梁上に載置して、鋼製スリーブＳｖの拘束線等による接続用部分への固定を解き、鋼製スリーブＳｖを他方のフルＰＣ床板の短い接続用部分の先端よりの部分に移動させながら、鋼製スリーブＳｖの孔を他方のフルＰＣ床板１０の短い接続用部分の先端よりの部分に嵌め、鋼製スリーブＳｖを他方のフルＰＣ床板側に偏した位置にして、鋼製スリーブＳｖの中央部の孔に圧入器具を用いてウェッジＷｇを所定の深さまで圧入し、長い鉄筋の接続用部分と短い鉄筋の接続用部分を接続する。なお、一方のフルＰＣ床板の長い鉄筋の接続用部分に鋼製スリーブＳｖの孔を嵌める作業は、一方のフルＰＣ床板を梁上へ載置する以前に行なってもよい。
【００１９】
図１２には、鋼製スリーブＳｖの周囲のコンクリートの抵抗機構が示されている。鋼製スリーブＳｖの孔Ｓｖ２にウェッジＷｇを圧入することにより接続された対向するフルＰＣ床板１０の上側の鉄筋１２の対の接続用部分１２ａ１，１２ｂ１にそれぞれ引張力Ｐ１，Ｐ２が作用すると、これらの接続用部分１２ａ１，１２ｂ１の接続部の偏心によるトルクにより、鋼製スリーブＳｖが回転しようとするが、これに対して鋼製スリーブＳｖの周囲のコンクリートが主として支圧力Ｑにより抵抗し、コンクリートに過大なひび割れ等の損傷が生じない限り鋼製スリーブＳｖの回転が拘束されるため、対の鉄筋１２の接続用部分１２ａ１，１２ｂ１を接続する鋼製スリーブＳｖを１個にしても、対のフルＰＣ床板１０間に作用する引張力Ｐ１，Ｐ２を鋼製スリーブＳｖを介して確実に伝達することができる。
【００２０】
フルＰＣ床板１０の上側の鉄筋１２の接続用部分同士及び下側の鉄筋１１の接続用部分同士を接続したい場合には、フルＰＣ床板１０として、例えば、図１４に示されている波形状のコッタの谷底部１０ｒより、上側の鉄筋１２の縦横鉄筋１２ａ，１２ｂの端部よりの接続用部分１２ａ１，１２ｂ１と下側の鉄筋１１の縦横鉄筋１１ａ，１１ｂの端部よりの接続用部分１１ａ１，１１ｂ１とを平面的にやや離して突出させ、これらを接続筋として対向するフルＰＣ床板１０の上側の鉄筋１２の接続用部分同士及び下側の鉄筋１１の接続用部分同士を鋼製スリーブＳｖ及びウェッジＷｇを使う接続工法により接続するようにする。この場合、接続作業がやや煩雑になるが、フルＰＣ床板同士の一体性は一層強固なものとなる。
図１４に示されているフルＰＣ床板１０では、コッタの波形状の谷底部の長さが長くされ、その長辺部Ａ又は短辺部Ｂのコッタの波形状の頂部１０ｐに対応する部分の下側の鉄筋１１の延在域と上側の鉄筋１２及び端補強鉄筋１２ｃ，１２ｄの延在域とにわたって多数のＵ型補強鉄筋１３が配され、Ｕ型補強鉄筋１３のＵ型の二つの辺部分を含む面がフルＰＣ床１０の上下の面に対して直角になるように配置され、各Ｕ型補強鉄筋１３のＵ型の一方（下側）の辺部分は下側の鉄筋１１の横鉄筋１１ｂ又は縦鉄筋１１ａと平行に配され、それらのＵ型の他方（上側）の辺部分の上側の鉄筋１２の横鉄筋１２ｂ又は縦鉄筋１２ａと平行に配されている。
【００２１】
Ｈ形鋼からなる梁１，２のフランジ幅が狭くて、梁１，２上において接続用部分１２ａ１，１２ｂ１の接続用空間を十分にとれない場合には、図１５〜図１７に示すように、フルＰＣ床板１０の長辺部Ａ及び短辺部Ｂの波形状のコッタの上側の半分を波形状のコッタの平面視の端面に沿って直角に切除して、波形状のコッタの端面１０ｃを、上半分の鉛直な端面１０ｃ２と、中間の水平な段部１０ｃ３と、下半分の鉛直な端面１０ｃ１とからなる中間に段部のある端面として、上側の鉄筋１２の接続用部分１２ａ１，１２ｂ１の接続用空間を広くし、鋼製スリーブＳｖによる接続作業に必要なスペースを充分確保できるようにする。このようにすると、フルＰＣ床板１０の敷設時の設置誤差の吸収も容易になる。
【００２２】
図１〜図１１では、現場打ちコンクリートの打設による接合部に補強筋を施さない例を図示したが、両方のフルＰＣ床板１０の各辺部Ａ，Ｂ間の梁１，２の上側のフランジ１ａ，２ａの上面１ａ１，２ａ１上のコンクリートの打設空間Ｓｐ１内において、上側の鉄筋１２の鋼製スリーブＳｖ及びウェッジＷｇを使う接続工法により接続された接続用部分１２ｂ１，１２ａ１の上側に、すなわち、前記鋼製スリーブＳｖの鉄筋の長手方向の端面の近傍の接続用部分１２ｂ １ ，１２ａ １ の上側に、図１８に示すように、各鋼製スリーブＳｖを挟んで２本の直線状の補強鉄筋１４を各鋼製スリーブの前記端面に沿って各辺部Ａ，Ｂと平行に配筋し、或いは、接続に使った各鋼製スリーブＳｖの周囲において、図１９に示すように、前記鋼製スリーブＳｖの鉄筋の長手方向の端面から離れた接続用部分１２ｂ １ ，１２ａ １ の上側に、各鋼製スリーブＳｖとの間に所定の距離をおいて鋼製スリーブＳｖを取り囲むようにリング状の補強鉄筋１５をそれぞれ配筋する。これらの補強筋１４，１５は、対向するフルＰＣ床板１０間に大きな引張力が作用する場合に、鋼製スリーブＳｖの周辺に生じるひび割れを拘束する。
補強鉄筋１４，１５の配筋が引張力の伝達性能の向上に有効であることは、引張実験の結果あきらかになっており、補強鉄筋１４，１５は要求される引張力伝達性能に応じて配筋する。
【００２３】
実施例２は、図２０及び図２１に示され、フルＰＣ床板１０同士を接合するとともに、フルＰＣ床板１０とフルプレキャストＲＣ梁（フルＰＣＲＣ梁という）３とを接合する例である。
フルＰＣＲＣ梁３としては、梁の長手方向に延在させた多数本の梁主筋３ａの周囲に多数本の肋筋３ｂを梁の長手方向に間隔をおいて配筋し、梁主筋３ａ及び肋筋３ｂからなる梁鉄筋の上側の梁の長手方向に間隔をおいた多数の個所に対の逆Ｕ字型鉄筋３ｃ，３ｃを梁の長手方向に対して直角に配筋し、逆Ｕ字型鉄筋３ｃの上側の部分のみを露出させて、梁主筋３ａ、肋筋３ｂ及び逆Ｕ字型鉄筋３ｃの下側の部分をコンクリート中に埋設して形成されたものを使う。なお、フルＰＣＲＣ梁３の上側面３ｄの対の逆Ｕ字型鉄筋３ｃ，３ｃの露出部のある個所には、シヤコッタとなる凹部３ｄ１（図示例では、平面視で四角形の浅い凹部）が形成されている。前記の露出させた逆Ｕ字型鉄筋３ｃの上側の部分は、図２０及び図２１に示されているように、フルＰＣ床板１０がフルＰＣＲＣ梁３上に載置された際のフルＰＣ床板の鉄筋の接続用部分よりも下方にあるようにしてあり、逆Ｕ字型鉄筋３ｃの上側の部分が、フルＰＣ床板の鉄筋の接続用部分の接合作業等の障害にならないようにしてある。
小間隔をおいて配される対の逆Ｕ字型鉄筋３ｃの露出部分は、フルＰＣＲＣ梁３，３の上面３ｄ上のコンクリートの打設空間Ｓｐ２内に突出するフルＰＣ床板１０の長辺部Ａ及び短辺部Ｂの上側の鉄筋１２の接続用部分１２ｂ１，１２ａ１と平行に、かつ平面視でそれらの間に鋼製スリーブＳｖが位置するように配置される。
なお、フルＰＣ床板１０としては、実施例１の図１〜図５に示されたフルＰＣ床板と同じものを使う。
【００２４】
鉄筋コンクリート造（ＲＣ造）の建物躯体は、その基礎上に多数のＲＣ造の柱が建てられ、各柱間に前記フルＰＣＲＣ梁３がそれぞれ配され、各フルＰＣＲＣ梁３の両端が前記柱に接合されて構築される。建物躯体の各フルＰＣＲＣ梁３上に多数のフルＰＣ床板１０の長辺部Ａ及び短辺部Ｂが載置され、隣接して対向するフルＰＣ床板１０の谷底部から突出する上側の鉄筋１２の接続しようとする対の接続用部分１２ｂ１，１２ａ１毎に１個の鋼製スリーブをそれぞれ嵌め、各鋼製スリーブＳｖの孔Ｓｖ２にウェッジＷｇを圧入することにより各対の接続用部分１２ｂ１，１２ａ１同士を接続した後、フルＰＣＲＣ梁３上のフルＰＣ床板１０の端面間の打設空間Ｓｐ２に現場打ちコンクリートを打設する。これにより、コンクリートの硬化後に、フルＰＣ床板１０同士、及びフルＰＣ床板１０とフルＰＣＲＣ梁３とが強固に一体化され、鉛直荷重や地震力等の荷重に抵抗することができるようになる。
【００２５】
なお、フルＰＣＲＣ梁３の上側に形成するシヤコッタの平面視の形状は、図２０及び図２１に示されている正方形に限るものではなく、長方形、円、楕円形等のいずれの形状でもよく、そのシヤコッタの深さは、１０ｍｍ〜３０ｍｍ程度が適当であり、この程度の深さであれば、通常、フルＰＣＲＣ梁３の配筋（すなわち、主筋３ａ、肋筋３ｂ）に干渉することがなく、フルＰＣＲＣ梁３の製作に好都合である。
また、前記シヤコッタに代えて、現場打ちコンクリートが打設されるプレキャストＲＣ梁の上面部を粗面仕上げにして、打ち継ぎ部のせん断力伝達を図ることも可能である。
【００２６】
実施例２において、フルＰＣ床板１０の上側の鉄筋１２の接続用部分同士及び下側の鉄筋１１の接続用部分同士を接続したい場合には、図１４に示すフルＰＣ床板１０を使い、対向するフルＰＣ床板１０の上側の鉄筋１２の接続用部分同士及び下側の鉄筋１１の接続用部分同士を鋼製スリーブＳｖ及びウェッジＷｇを使う接続工法により接続するようにする。
なお、図２０及び図２１に示された実施例は、フルプレキャストＲＣ梁に限らず、フルプレキャスト鉄骨鉄筋コンクリート梁（フルＳＲＣ梁という）の場合にも全く同様の方法で適用することができる。
【００２７】
実施例３は、図２２及び図２３に示され、フルＰＣ床板２０とハーフプレキャストＲＣ梁（ハーフＰＣＲＣ梁という）４とを接合しかつフルＰＣ床板２０同士を接合する例である。
ハーフＰＣＲＣ梁４としては、梁の長手方向に延在させた多数本の梁主筋４ａの周囲に梁の長手方向に間隔をおいて多数本の肋筋４ｂを配筋し、梁の上側に位置する梁主筋４ａ及び肋筋４ｂの梁の上側の部分が露出するように、梁主筋４ａ及び肋筋４ｂの下側の部分をコンクリート中に埋設して形成されているものを使う。フルＰＣ床板としては、例えば、図２２及び図２３に示すフルＰＣ床板２０を使う。このフルＰＣ床板２０は、矩形のＰＣ床板の長辺部及び短辺部にフルＰＣ床板１０のような波形状のコッタがなく、矩形のＰＣ床板２０の長辺部及び短辺部の端面がその長辺方向又は短辺方向の平面になっている。前記の露出させた梁主筋４ａ及び肋筋４ｂの上側の部分は、図２２及び図２３に示されているように、フルＰＣ床板２０がハーフＰＣＲＣ梁４上に載置された際のフルＰＣ床板の鉄筋の接続用部分よりも下方にあるようにしてあり、梁主筋４ａ及び肋筋４ｂの上側の部分が、フルＰＣ床板の鉄筋の接続用部分の接合作業等の障害にならないようにしてある。
なお、図２２及び図２３には、実施例１のフルＰＣ床板１０の下側の鉄筋１１に相当する鉄筋が図示されていないが、フルＰＣ床板２０には、下側の鉄筋が実施例１のフルＰＣ床板１０と同様に配筋されているものとする。
【００２８】
ＲＣ造の建物躯体は、その基礎上に多数のＲＣ造の柱が建てられ、各柱間にハーフＰＣＲＣ梁４がそれぞれ配され、各ハーフＰＣＲＣ梁４の両端が適宜の仕方で柱に接合されて構築されている。建物躯体の各ハーフＰＣＲＣ梁４上に多数のフルＰＣ床板２０を配置し、対向するフルＰＣ床板２０の端面より突出した対の鉄筋の接続用部分２２ｂ１に１個の鋼製スリーブＳｖを嵌め、各鋼製スリーブＳｖの中央部の孔Ｓｖ２にウェッジＷｇを圧入することにより、これらの対の接続用部分２２ｂ１を接続した後、梁上のフルＰＣ床板２０間の打設空間Ｓｐ３に現場打ちコンクリートを打設して、各フルＰＣ床板２０をハーフＰＣＲＣ梁４に固着する。
なお、現場打ちコンクリートが打設されるハーフＰＣＲＣ梁４の上面部を粗面仕上げにしておくことが、打ち継ぎ部のせん断力伝達を確実にするために好ましい方法である。このことにより、ハーフＰＣＲＣ梁４の肋筋４ｂが水平打ち継ぎにおけるずれ変位を防止する効果を発揮するとともに、コンクリートの硬化後、フルＰＣ床板２０とハーフＰＣＲＣ梁４とが堅固に一体化され、鉛直荷重や地震力等の荷重に抵抗することができる。
【００２９】
図２２及び図２３には、フルＰＣ床板２０の上側筋のみを接続する例を示したが、ハーフＰＣＲＣ梁４の上側の露出する鉄筋の位置をやや下げることにより、フルＰＣ床板２０の下側の鉄筋の接続も可能である。
なお、図２２及び図２３に示す例では、フルＰＣ床板２０の各辺部の形状として平面視で直線状にしたものを示したが、各辺部を台形状や波形状等のコッタで構成したもの（例えば、実施例１のフルＰＣ床板１０）を使い、フルＰＣ床板とハーフＰＣＲＣ梁４との一体性を一層向上させるようにしてもよい。
図２２及び図２３に示された実施例は、ハーフプレキャストＲＣ梁に限らず、ハーフプレキャスト鉄骨鉄筋コンクリート梁（ハーフＳＲＣ梁という）の場合にも全く同様の方法で適用することができる。
【００３０】
実施例４は、図２４及び図２５に示され、フルＰＣ床板１０同士を接合する例であり、道路、橋梁の床板敷設工事等におけるフルＰＣ床板同士の接合方法として採用できるものである。フルＰＣ床板１０としては、実施例１の図１〜図５に示したフルＰＣ床板と同じものを使う。
この場合には対向するフルＰＣ床板１０間に形成されたコンクリート打設空間Ｓｐ４の下側にコンクリートの流出を防ぐ型枠板Ｍｐを配置する。フルＰＣ床板１０の上側の鉄筋１２の接続用部分１２ｂ１，１２ａ１の接合の仕方等は実施例１と全く同じである。
互いに接続するフルＰＣ床板１０の上側の鉄筋１２の接続用部分同士及び下側の鉄筋１１の接続用部分同士を接続したい場合には、例えば、図１４に示すフルＰＣ床板１０を使い、対向するフルＰＣ床板１０の上側の鉄筋１２の接続用部分同士及び下側の鉄筋１１の接続用部分同士を鋼製スリーブＳｖ及びウェッジＷｇを使う接続工法により接続するようにする。
【００３１】
上記の実施例２〜４の場合においても、実施例１の場合と同様に、図１８に示すように、各鋼製スリーブＳｖを挟んで２本の直線状の補強筋１４を平行に配筋し、或いは、図１９に示すように、各鋼製スリーブＳｖの周囲にこれらを取り囲むようにリング状の補強筋１５を配筋する。実施例２〜４の場合においても、補強筋１４，１５は要求される引張力伝達性能に応じた配筋とする。
【００３２】
【発明の効果】
この発明は、特許請求の範囲の各請求項に記載した構成を備えることにより、次の（イ）〜（ヘ）の作用効果を奏する。
（イ）請求項１の発明のフルＰＣ床板の固着方法は、フルＰＣ床板として、フルＰＣ床板の形状を平面視で長辺部及び短辺部を備えた矩形状にし、フルＰＣ床板の長辺部及び短辺部の少なくとも一つの辺部を平面視で波形状のコッタとし、フルＰＣ床板中に埋め込まれた多数本の鉄筋の端部を波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出させて鉄筋の接続用部分として製作したものを使い、互いに隣接する一方のフルＰＣ床板の波形状のコッタの頂部が互いに隣接する他方のフルＰＣ床板の波形状のコッタ部の頂部に対面し、かつ前記一方のフルＰＣ床板の波形状のコッタの谷底部が前記他方のフルＰＣ床板の波形状の谷底部に対面するように、複数のフルＰＣ床板の前記辺部を建物躯体の鉄骨梁上に載置し、対面する各フルＰＣ床板の前記各辺部間にコンクリートの打設用空間を形成し、互いに隣接する一方の各フルＰＣ床板の波形状のコッタの各谷底部から突出する鉄筋の接続用部分と他方のフルＰＣ床板の波形状のコッタの各谷底部から突出する接続用部分とが接近して平行に位置するようにし、接近して平行にされた２本の鉄筋の接続用部分に一個の鋼製スリーブを嵌め、各鋼製スリーブの中央の孔にウェッジを圧入して２本の鉄筋の接続用部分を接続し、前記打設用空間内の鉄骨梁の上面に頭付きのスタッドの基部を溶接し、前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面の近傍の鉄筋の接続用部分の上側又は下側に、各銅製スリーブを挟んで２本の直線状の補強鉄筋を、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面に沿って、フルＰＣ床板の前記辺部と平行に配筋し、或いは前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面から離れた鉄筋の接続用部分の上側又は下側に、各鋼製スリーブとの間に所定の距離をおいて各鋼製スリーブを取り囲むようにリング状の補強鉄筋をそれぞれ配筋して、前記打設用空間内にコンクリートを打設し、各フルＰＣ床板を鉄骨梁に固着するとともにフルＰＣ床板同士を固着するから、次の（１）〜（６）の効果を奏する。
（１）フルＰＣ床板のコンクリート部分と現場打ちコンクリートの部分と鉄骨梁との接合面に生じる面内せん断力や地震時にスラブに作用する面内せん断力に対して、フルＰＣ床板の各辺部に設けた波形状のコッタ、鉄骨梁に溶接した頭付きスタッド、及び鋼製スリーブとウェッジの圧入とによる鉄筋の接続用部分の接続によるフルＰＣ床板と鉄骨梁との間及びフルＰＣ床板間の引張力伝達によるせん断抵抗により、現場打ちコンクリートスラブと同等の構造一体性を発揮することができる。
（２）フルＰＣ床板の固着には、頭付きスタッドの鉄骨梁への溶接以外、現場溶接を必要としないため、フルＰＣ床板の敷設工事が天候に左右されず、建設の工程に遅れが生じない。
（３）現場打ちコンクリートスラブと同等の構造性能を有するため、現場打ちコンクリートスラブとして設計された床工法の一部あるいは全部を施工段階においてこの発明のフルＰＣ床板の固着方法によるスラブに変更することが可能であり、施工方法の自由度を増すことができる。
（４）フルＰＣ床板の敷設固着後に、そのスラブ上の空間をストックヤードとして利用することができるため、仕上げ材等の先行揚重が可能となり、全体の建設工期の短縮が図れる。
（５）平行にされた２本の鉄筋の接続用部分に１個の鋼製スリーブを嵌め、鋼製スリーブの中央の孔にウェッジを圧入して２本の鉄筋の接続用部分を互いに接続するから、建物躯体の梁上に複数のフルＰＣ床板を敷設する場合に、各フルＰＣ床板の長辺部又は短辺部間の間隔を狭めることができ、幅の狭い梁を用いた建物躯体であっても、フルＰＣ床板を梁に確実に固着することができる。
【００３３】
（６）対のフルＰＣ床板の各辺部間の梁の上側のコンクリートの打設空間内において、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面の近傍の鉄筋の接続用部分の上側又は下側に、各鋼製スリーブを挟んで２本の直線状の補強鉄筋を、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面に沿って、フルＰＣ床板の前記辺部と平行に配筋するから、対向するフルＰＣ床板間に大きな引張力が作用しても、鋼製スリーブの周辺のコンクリートに生じるひび割れを拘束し、引張力の伝達性能の向上に有効である。
或いは、前記の打設空間内において、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面から離れた鉄筋の接続用部分の上側又は下側に、鉄筋の接続に使った各鋼製スリーブとの間に所定の距離をおいて各鋼製スリーブを取り囲むようにリング状の補強鉄筋をそれぞれ配筋するから、対向するフルＰＣ床板間に大きな引張力が作用しても、鋼製スリーブの周辺のコンクリートに生じるひび割れを拘束し、引張力の伝達性能の向上に有効である。
一方のフルＰＣ床板の鉄筋の接続用部分と他方のフルＰＣ床板の鉄筋の接続用部分とに一個の鋼製スリーブを嵌め、鋼製スリーブの中央の孔にウェッジを圧入して両方の鉄筋の接続用部分を直接接続するから、前記直線状の補強鉄筋の本数を２本にし、或いは鉄筋の接続に使った鋼製スリーブ毎にリング状の補強鉄筋を１箇配筋するだけで、上記効果を発揮することができる。
【００３４】
（ロ）請求項２の発明のＰＣ床板の固着方法のようにすると、上記（イ）の（３）〜（６）の効果と同様の効果を奏することができるだけでなく、次の（７）の効果を奏する。
（７）フルＰＣ床板のコンクリート部分と現場打ちコンクリートの部分とフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁のコンクリート部分との接合面に生じる面内せん断力や地震時にスラブに作用する面内せん断力に対して、フルＰＣ床板の各辺部に設けた波形状のコッタ、フルＰＣＲＣ梁又はフルＰＣＳＲＣ梁の上面の凹部又は粗面部、前記梁の上面に突出した連結用鉄筋の部分、及び鋼製スリーブとウェッジの圧入とによる鉄筋の接続用部分の接続によるフルＰＣ床板とフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁との間及びフルＰＣ床板間の引張力伝達によるせん断抵抗により、現場打ちコンクリートスラブと同等の構造一体性を発揮することができ、建物躯体の梁がフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁である場合であっても、フルＰＣ床板をフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁に強固に固着することができる。
【００３５】
（ハ）請求項３の発明のフルＰＣ床板の固着方法のようにすると、上記（イ）の（３）〜（６）の効果と同様の効果を奏することができるだけでなく、次の（８）の効果を奏する。（８）フルＰＣ床板のコンクリート部分と現場打ちコンクリートの部分とハーフＰＣＲＣ梁又はハーフＰＣＳＲＣ梁のコンクリートの部分との接合面に生じる面内せん断力や地震時にスラブに作用する面内せん断力に対して、ハーフＰＣＲＣ梁又はハーフＰＣＳＲＣ梁の上面から突出した梁主筋及び肋筋梁の上側の部分、前記梁の上面の粗面部、及び鋼製スリーブとウェッジの圧入とによる鉄筋の接続用部分の接続によるフルＰＣ床板とハーフＰＣＲＣ梁又はハーフＰＣＳＲＣ梁との間及びフルＰＣ床板間の引張力伝達によるせん断抵抗により、現場打ちコンクリートスラブと同等の構造一体性を発揮することができ、建物躯体の梁がハーフＰＣＲＣ梁又はハーフＰＣＳＲＣ梁である場合でも、フルＰＣ床板をハーフＰＣＲＣ梁又はハーフＰＣＳＲＣ梁に強固に固着することができる。
【００３６】
（ニ）請求項４の発明のフルＰＣ床板の固着方法のようにすると、上記（イ）の（３）〜（４）及び（６）の効果と同様を奏することができるだけでなく、次の（９）の効果を奏する。
（９）フルＰＣ床板のコンクリート部分と現場打ちコンクリートの部分との接合面に生じる面内せん断力や地震時にスラブに作用する面内せん断力に対して、フルＰＣ床板の各辺部に設けた波形状のコッタ、及び鋼製スリーブとウェッジの圧入とによる鉄筋の接続用部分の接続によるフルＰＣ床板間の引張力伝達によるせん断抵抗により、現場打ちコンクリートスラブと同等の構造一体性を発揮することができる。また、平行にされた２本の鉄筋の接続用部分に１個の鋼製スリーブを嵌め、鋼製スリーブの中央の孔にウェッジを圧入し、鉄筋の接続用部分を鋼製スリーブに食い込ませて互いに接続するから、フルＰＣ床板の長辺部又は短辺部間の間隔を狭めることができ、現場打ちコンクリートの量を少なくすることができる。
【００３７】
（ホ）請求項５の発明のフルＰＣ床板の固着方法は、フルＰＣ床板として、フルＰＣ床板の形状が平面視で長辺部及び短辺部のある矩形状とされ、その長辺部及び短辺部の少なくとも一つの辺部が平面視で波形状のコッタとされ、フルＰＣ床板中に下側の鉄筋及び上側の鉄筋が埋め込まれ、下側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋を構成する格子状鉄筋の横鉄筋又は縦鉄筋の端よりの部分が波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出して鉄筋の接続用部分とされてあり、下側の鉄筋を構成する格子状鉄筋の横鉄筋又は縦鉄筋の端が波形状のコッタの各頂部に位置しており、多数のＵ型補強鉄筋が前記辺部の近傍の波形状のコッタの頂部に相対する下側の鉄筋の延在域と上側の鉄筋の延在域とにまたがって配され、各Ｕ型補強鉄筋のＵ型の二つの辺部分を含む面をフルＰＣ床板の上側又は下側の面に対して直角になるように配置され、各Ｕ型補強鉄筋のＵ型の一方の辺部分が下側の鉄筋の延在域に接して前記辺部と交差する方向に向けられ、各Ｕ型補強鉄筋のＵ型の他方の辺部分が上側の鉄筋の延在域に接して前記辺部と交差する方向に向けられているフルＰＣ床板を使うから、上記の（１）〜（７）及び（９）の効果と同様を奏することができるだけでなく、次の（１０）及び（１１）の効果を奏する。
（１０）フルＰＣ床板の長辺部及び又は短辺部の波形状のコッタに頂部の付近の部分がＵ型補強鉄筋により補強されるから、波形状のコッタのある辺部を梁上に載置してフルＰＣ床板を敷設しても、フルＰＣ床板の梁との接触部等が破損する恐れがない。
（１１）上側の鉄筋を構成する格子状鉄筋の横鉄筋又は縦鉄筋の端よりの部分を波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出させて鉄筋の接続用部分とするから、波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出する鉄筋の接続用部分を備えたフルＰＣ床板を容易に製作できる。
【００３８】
（ヘ）請求項６の発明のフルＰＣ床板の固着方法は、フルＰＣ床板として、フルＰＣ床板の形状が平面視で長辺部及び短辺部のある矩形状とされ、その長辺部及び短辺部の少なくとも一つの辺部が平面視で波形状のコッタとされ、フルＰＣ床板中に下側の鉄筋及び上側の鉄筋が埋め込まれ、下側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋を構成する格子状鉄筋の横鉄筋又は縦鉄筋の端よりの部分が波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出して鉄筋の接続用部分とされてあり、フルＰＣ床板の鉄筋の接続用部分が波形状のコッタの谷底部から突出させてある辺部にあっては、フルＰＣ床板の下半分の波形状のコッタの端面とフルＰＣ床板の上半分の波形状のコッタの端面との間に略水平な段部があり、フルＰＣ床板の下半分の波形状のコッタの端面が前記段部の分だけフルＰＣ床板の上半分の波形状のコッタの端面から突出させてあり、前記鉄筋の接続用部分が上半分の波形状のコッタの谷底部から突出しているフルＰＣ床板を使うから、上記の（１）〜（６）の効果と同様を奏することができるだけでなく、次の（１２）の効果を奏する。
（１２）上側の鉄筋の接続用部分の接続に使用できる空間が広くなり、鋼製スリーブによる接続作業に必要なスペースを充分に確保できる。そのうえ、フルＰＣ床板の敷設時の設置誤差の吸収が容易になる。
また、互いに接合するフルＰＣ床板の辺部の波形状のコッタの頂部の端面間の間隔を狭めても、鋼製スリーブによる接続作業に必要なスペースを充分に確保できるから、鉄骨梁の幅が狭い場合でも、このフルＰＣ床板を用いて鉄骨梁上にコンクリート床を容易に構築できる。
【図面の簡単な説明】
【図１】実施例１のフルＰＣ床板を概略的に示す平面図
【図２】実施例１のフルＰＣ床板の下側の鉄筋の配筋の仕方の一例を示す平面図
【図３】実施例１のフルＰＣ床板の上側の鉄筋の配筋の仕方の一例を示す平面図
【図４】実施例１のフルＰＣ床板の波形状のコッタの形状の一例を示す平面図
【図５】（ａ）及び（ｂ）はフルＰＣ床板に使う鉄筋の一例を示す正面図
【図６】実施例１の建物躯体の梁上に配置した複数のフルＰＣ床板をその短辺方向の線で断面した正面図
【図７】実施例１の建物躯体の梁上に配置した複数のフルＰＣ床板をその長辺方向の線で断面した正面図
【図８】実施例１のフルＰＣ床板の長辺部を鉄骨梁に固着しかつ長辺部同士を互いに接合するやり方を示す平面図
【図９】図８に示すものをそのＡ−Ａで縦断した正面図
【図１０】図８に示すものをそのＢ−Ｂで縦断した正面図
【図１１】実施例１の複数のフルＰＣ床板の建物躯体の大梁と小梁との交差部の近傍における各フルＰＣ床板の接合の仕方を示す平面図
【図１２】実施例１の鋼製スリーブとウェッジの圧入とによる接続工法により接続されたフルＰＣ床板の接続部に作用する力等の関係を示す平面図
【図１３】図１２の鋼製スリーブ、ウェッジ、鉄筋等をそのＣ−Ｃで縦断した断面図
【図１４】実施例１の他の型式のフルＰＣ床板の要部の平面図
【図１５】実施例１のその他の型式のフルＰＣ床板、該フルＰＣ床板の長辺部同士の接合の仕方等を示す平面図
【図１６】図１５に示すものをそのＣ−Ｃで縦断した正面図
【図１７】図１５に示すものをそのＤ−Ｄで縦断した正面図
【図１８】実施例１のフルＰＣ床板の鉄筋の各接続部を挟んで直線状の補強筋を配した場合の平面図
【図１９】実施例１のフルＰＣ床板の鉄筋の各接続部の周囲にリング状の補強筋を配した場合の平面図
【図２０】実施例２の建物躯体のフルＰＣ梁上に配置した二つのフルＰＣ床板の接合部を図２１のＥ−Ｅ線で縦断した正面図
【図２１】図２０に示す二つのフルＰＣ床板の接合部等の要部の平面図
【図２２】実施例３の建物躯体のハーフＰＣ梁上に配置した二つのフルＰＣ床板の接合部を図２３のＦ−Ｆ線で縦断した正面図
【図２３】図２２に示す二つのフルＰＣ床板の接合部の要部の平面図
【図２４】実施例４の二つのフルＰＣ床板の接合部を図２５のＧ−Ｇ線で縦断した正面図
【図２５】図２４に示す二つのフルＰＣ床板の接合部の要部の平面図
【符号の説明】
１ 大梁
２ 小梁
３ フルＰＣ梁
３ａ 主筋
３ｂ 肋筋
３ｃ 逆Ｕ字型鉄筋
３ｄ 上面
３ｄ１ 凹部
４ ハーフＰＣ梁
４ａ 主筋
４ｂ 肋筋
１０，２０ フルＰＣ床板
１０ａ 下面
１０ｂ 上面
１０ｃ 端面
１０ｃ１ 下半分の端面
１０ｃ２ 上半分の端面
１０ｃ３ 段部
１０ｐ 頂部
１０ｒ 谷底部
１１ 下側の鉄筋
１１ａ 縦鉄筋
１１ｂ 横鉄筋
１１ａ１，１１ｂ１ 接続用部分
１２ 上側の鉄筋
１２ａ 縦鉄筋
１２ｂ 横鉄筋
１２ａ１，１２ｂ１ 接続用部分
１２ｃ，１２ｄ 端補強鉄筋
１３ Ｕ型補強鉄筋
１４ 直線状の補強鉄筋
１５ リング状の補強鉄筋
Ａ フルＰＣ床板の長辺部
Ｂ フルＰＣ床板の短辺部
Ｓｄ 頭付きスタッド
Ｓｐ１〜Ｓｐ４ 打設用空間
Ｓｖ スリーブ
Ｗｇ ウェッジ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an adhering method in which adhering between full precast concrete floorboards (referred to as full PC floorboards in this specification) and adhering between full PC floorboards and various beams of a building frame.
[0002]
[Prior art]
For example, there are the following methods (1) to (3) for joining the PC floor plates and joining the PC floor plates to the steel beam of the building frame.
(1) The two PC floor boards are opposed to each other, and the joint portions protruding from the end faces of the reinforcing bars embedded in the floor boards are positioned in the concrete placement space between the end faces, In the method of placing concrete in the installation space and joining the PC floor boards to each other, the PC floor boards are provided with hoop-like joining portions in two stages in the thickness direction in the side view when the reinforcing bars project from the end faces thereof. The two-stage reinforcing bar hoop-like joining part of one PC floor panel and the two-stage reinforcing bar hoop-like joining part of the other PC floor board partially overlap in side view and are spaced apart in plan view. The two PC floor boards are arranged so as to face each other, and a large number are provided on the upper side and lower side or upper side, inner side and lower side of each hoop-like joining portion of the reinforcing bar located in the placement space. The reinforcing bars are arranged parallel to the edge of each floor board, Da設 to joining method PC floorboard for joining the PC floorboards together concrete between (see Japanese Patent Laid-Open No. 6-108420).
(2) The two PC floor boards are opposed to each other, and the joint portions protruding from the end faces of the reinforcing bars embedded in the floor boards are positioned in the concrete placement space between the end faces, In the method of placing concrete in the installation space and joining the PC floor boards to each other, the floor boards have reinforcing bars protruding from the end surfaces thereof, and have rectangular hoop-like joining portions in side view, and the rectangular shape of one floor board Arrange the two PC floor boards facing each other so that the hoop-like joining part and the rectangular hoop-like joining part of the other floor board partially overlap in side view and are spaced apart in plan view Then, two long support plates are placed in the rectangular hoop-like portion at the tip of the joining portion in the space portion surrounded by the rectangular hoop-like joining portion formed by partly overlapping in a side view. Flat with the end face of each floor board in contact with the inside A plurality of reinforcing bars arranged in parallel to the end face of each floor board on the upper and lower sides of the rectangular hoop-shaped joining portion of the reinforcing bars located in the placing space, and the concrete is placed in the placing space. PC floor board joining method in which the PC floor boards are joined to each other (see Japanese Patent Application Laid-Open No. 8-326197).
(3) The end faces of the pair of PC floor boards are placed on the steel beam, and the connecting portions protruding from the end faces of the reinforcing bars embedded in the floor boards are positioned in the concrete placement space between the end faces, In the method in which concrete is placed in the placement space and the PC floor boards are joined to each other, the PC floor boards protrude from the end faces of the side portions and are predetermined with respect to a straight line connecting the end faces of the side portions in plan view. A plurality of reinforcing bar connecting portions that are inclined at an angle, and a plurality of headed studs are implanted on the upper surface of the steel beam at intervals in the longitudinal direction, The connecting part of the inclined reinforcing bar of one PC floor panel and the connecting part of the inclined reinforcing bar of the other PC floor board are parallel to each other in plan view and are located on the same plane. Place on the steel beam and lay flat next to each other Two steel sleeves are fitted into the connecting portions of the pair of reinforcing bars located on the same plane and spaced apart in the longitudinal direction, and a wedge is press-fitted into the center hole of each steel sleeve, A method for joining PC floor plates in which connecting portions of reinforcing bars are connected, concrete is placed in the placement space, the PC floor plates are joined to steel beams, and the PC floor plates are joined together (Japanese Patent Laid-Open No. 2000-17774) reference).
[0003]
[Problems to be solved by the invention]
In the conventional method (1) for joining PC floor boards, the concrete in which the hoop-like joining portion of one PC floor board and the hoop-like joining portion of the other PC floor board are cast is used. The joint is inadequate compared to the joint that joins the reinforcing bars directly, so that the hoop shape of the reinforcing bars located in the concrete placement space. It is necessary to arrange a large number of reinforcing bars parallel to the edge of the PC floor board on the upper and lower side or the upper side, the inner side and the lower side of the connecting part of the steel, and the reinforcing bar connecting part is processed into a hoop shape. In addition, many man-hours are required to insert a plurality of long rebars into a space part surrounded by a hoop-like joining part formed by overlapping a part in side view. There is a drawback that requires.
In the conventional method (2) for joining PC floor plates, the reinforcing portions of the reinforcing bars of one PC floor plate are connected to the rectangular hoop-shaped connecting portions of the reinforcing bars of the other PC floor plate. It is to be joined via a long bearing plate that touches the concrete and the placed concrete, and the joining is inadequate compared to the one that directly joins the joining parts of the reinforcing bars. It is necessary to arrange a large number of reinforcing bars parallel to the end face of the PC floor plate on the upper and lower sides of the rectangular hoop-shaped connecting part of the reinforcing bar located in the space for placing the reinforcing bar. It takes a lot of man-hours to process into a rectangular hoop shape, and in addition, two long supports in a space surrounded by a rectangular hoop-shaped joining portion formed by overlapping a part in a side view. Disadvantages that require a lot of manpower to insert the platen A.
The conventional method (3) of joining the PC floor plates is made of two steels in a connecting portion of a pair of reinforcing bars which are parallel to each other and located on the same plane and spaced in the longitudinal direction thereof. Fit the sleeve and press the wedge into the center hole of each steel sleeve fitted in the connecting part of the pair of reinforcing bars to connect the connecting part of the pair of reinforcing bars, so the length of the connecting part of the reinforcing bar is There is a drawback that it is necessary to increase the width of the concrete placing space that accommodates the connecting portion of the long reinforcing bar, which is difficult to apply to a beam with a narrow flange, and the connecting portion of the reinforcing bar is PC There is a drawback that many man-hours are required to incline the straight line connecting the edges of the side portions of the floor board while maintaining a certain angle.
The problem to be solved by the present invention is to provide a method for fixing a full PC floor board to various beams of a building frame that does not have the above-mentioned drawbacks of the prior art and a method for fixing a full PC floor board to each other. Even if the connecting part of the reinforcing bar embedded in the full PC floor board that protrudes from the end face of the floor board is connected by the connection method by the steel sleeve and wedge press-in, the gap between the adjacent full PC floor boards is reduced. The deck that can be used to fix the full PC floor board to the various beams of the building frame, has a deck plate on the beam of the building frame, and builds a reinforced concrete floor board on the deck plate. To provide a method for fixing a full PC floor panel to various beams of a building frame and a method for fixing a full PC floor panel to each other so that a floor panel structure having a structural characteristic equivalent to a plate floor panel structure is obtained. That.
[0004]
[Means for Solving the Problems]
  When fixing the full PC floor board of the present invention to the steel beam of the building frame,As a full PC floor board,The shape of the full PC floor board is made into a rectangular shape having a long side part and a short side part in a plan view, and at least one side part of the long side part and the short side part of the full PC floor board is a wave-shaped cotter in a plan view,What was manufactured as a part for connecting reinforcing bars by projecting the ends of many reinforcing bars embedded in the full PC floor board from each valley bottom of the corrugated cotter substantially perpendicular to the surface including each valley bottom. use,The top of the corrugated cotter of one full PC floor panel adjacent to each other faces the top of the corrugated cotter section of the other full PC floor panel adjacent to each other, and the bottom of the corrugated cotter of the one full PC floor panel The side portions of the plurality of full PC floor plates are placed on the steel beam of the building frame so that the portion faces the wave-shaped valley bottom of the other full PC floor plate, and each of the full PC floor plates facing each other Each full PC floor board that forms a concrete placement space between sides and is adjacent to each otherofProjects from the bottom of each valley of the corrugated cotterRebarConnecting part and other full PC floor boardofThe connecting parts protruding from the bottom of each valley of the wave-shaped cotter are close to each other and positioned in parallel,ApproachFit one steel sleeve to the connecting part of two rebars paralleled, press the wedge into the center hole of each steel sleeve and connect the connecting part of the two rebars,SaidWeld the base of the stud with head to the upper surface of the steel beam in the placement space., Two linear reinforcing steel bars sandwiching each steel sleeve on the upper side or the lower side of the steel bar connecting parts in the vicinity of both longitudinal end surfaces of the steel bar connecting parts of each steel sleeve Are arranged in parallel with the side portions of the full PC floor plate along both longitudinal end faces of the connecting portions of the reinforcing bars of the steel sleeves, or connecting portions of the reinforcing bars of the steel sleeves. A ring-shaped reinforcing bar is placed on the upper or lower side of the connecting part of the reinforcing bar away from both longitudinal end faces of the steel so as to surround each steel sleeve with a predetermined distance between each steel sleeve. Arrange each oneThen, concrete is placed in the placement space, and the full PC floor boards are fixed to the steel beam and the full PC floor boards are fixed to each other.
[0005]
  When fixing the full PC floor board of the present invention to the full PCRC beam or full PCSRC beam of the building frame, the fixing method of the full PC floor board is as follows:fullThe shape of the PC floor board is a rectangular shape having a long side portion and a short side portion in plan view, and at least one side portion of the long side portion and short side portion is a cotter having a wave shape in plan view,fullFrom the bottom of each trough of the corrugated cotter, the ends of the many reinforcing bars embedded in the PC floor boardApproximately perpendicular to the surface including the bottom of each valleyUsing the ones that are made to project as connecting parts of the reinforcing bars, as the full PCRC beam or the full PCSRC beam, the main bars, the reinforcing bars and the connecting bars or the main bars of the beams, the reinforcing bars, the steel beams and the connecting bars in the concrete. Buried, exposing a part of the connecting rebar at a number of locations spaced in the longitudinal direction of the beam on the upper surface of the concrete part,The exposed part of the connecting reinforcing bar is located below the connecting part of the reinforcing bar of the full PC floor board when the full PC floor board is placed on the full PCRC beam or the full PCSRC beam,In addition, the top of the corrugated cotter of the other full PC floor board that is adjacent to each other is used, the top of the corrugated cotter of one full PC floor board adjacent to each other is used, which is manufactured by providing a large number of concave or rough surface portions on the upper surface The sides of the plurality of full PC floor boards are arranged so that the bottom of the corrugated cotter of the one full PC floor board faces the corrugated bottom of the other full PC floor board. Placed on the full PCRC beam or the full PCSRC beam, forming a space for placing concrete between the side portions of the facing full PC floor plates, and the bottom of the corrugated cotter of one adjacent full PC floor plate The connecting portion of the reinforcing bar protruding from the part and the connecting portion of the reinforcing bar protruding from the bottom of the corrugated cotter of the other full PC floor board are close to each other and parallel to each other,ApproachFit one steel sleeve into the connecting part of the two rebars made parallel, and press the wedge into the center hole of the steel sleeve to connect the connecting part of the two reinforcing bars., Two linear reinforcing steel bars sandwiching each steel sleeve on the upper side or the lower side of the steel bar connecting parts in the vicinity of both longitudinal end surfaces of the steel bar connecting parts of each steel sleeve Are arranged in parallel with the side portions of the full PC floor plate along both longitudinal end faces of the connecting portions of the reinforcing bars of the steel sleeves, or connecting portions of the reinforcing bars of the steel sleeves. A ring-shaped reinforcing bar is placed on the upper or lower side of the connecting part of the reinforcing bar away from both longitudinal end faces of the steel so as to surround each steel sleeve with a predetermined distance between each steel sleeve. Arrange each oneConcrete is placed in the placement space, and each full PC floor board is fixed to a full PCRC beam or a full PCSRC beam, and the full PC floor boards are fixed to each other.It is.
[0006]
  When fixing the full PC floor board of this invention to the half PCRC beam or the half PCSRC beam of the building frame,As a full PC floor board, fullThe shape of the PC floor board is a rectangular shape with a long side portion and a short side portion in plan view,fullFrom the end face of at least one side part of the long side part and the short side part, the part from the end of the multiple reinforcing bars embedded in the PC floor boardApproximately perpendicular to the end faceProtrusions are used as connecting parts for reinforcing barsTheMadeAs a half PCRC beam or half PCSRC beam,The beam main bar and the reinforcing bar or the beam main bar, the bar and the steel frame are embedded in the concrete, and the upper part of the beam main bar and the bar beam is exposed from the upper surface of the concrete part,The exposed portions of the beam main bar and the barbed beam are located below the connecting portion of the full PC floor plate when the full PC floor plate is placed on the full PCRC beam or the full PCSRC beam,Forming a rough surface on the upper surface;Use what you madeA plurality of full PC floor panels are arranged such that a side portion of one full PC floor plate adjacent to each other and a side portion of the other full PC floor plate face each other with the exposed portions of the beam main bar and the barbed beam interposed therebetween.SaidSides are placed on the half PCRC beam or half PCSRC beam of the building frame to form concrete placement space between the sides of each facing full PC floor board, and one full PC floor board adjacent to each other Protrudes from the end face of the side ofRebarProjecting from the connection part and the end face of the side of the other full PC floorRebarSo that the connecting parts are close and parallel to each other,ApproachOne steel sleeve is fitted in the connecting part of the two rebars made parallel, and a wedge is pressed into the center hole of the steel sleeve to connect the connecting part of the two rebars.In addition, two linear reinforcements sandwiching each steel sleeve on the upper side or the lower side of the connecting portion of the reinforcing bar in the vicinity of both end faces in the longitudinal direction of the connecting portion of the reinforcing bar of each steel sleeve. Reinforcing bars are arranged in parallel with the sides of the full PC floor plate along both longitudinal end faces of the connecting portions of the reinforcing bars of the steel sleeves, or for connecting reinforcing bars of the steel sleeves. Reinforcing bars in the form of a ring so as to surround each steel sleeve at a predetermined distance from each steel sleeve on the upper or lower side of the connecting portion of the reinforcing bar away from both longitudinal end faces of the part Reinforce eachThen, concrete is placed in the placement space, and each full PC floor board is fixed to the half PCRC beam or the half PCSRC beam, and the full PC floor boards are fixed to each other.
[0007]
  When fixing the full PC floor boards of the present invention to each other, the fixing method of the full PC floor boards is as a full PC floor board,fullThe shape of the PC floor board is a rectangular shape having a long side portion and a short side portion in a plan view, and at least one side portion of the long side portion and the short side portion is a corrugated cotter in a plan view,fullFrom the bottom of each valley of the corrugated cotter, the part from the end of the many rebars embedded in the PC floor boardApproximately perpendicular to the surface including the bottom of each valleyUsing the parts that are made to project as connecting parts of reinforcing bars, place the sides with corrugated cotters of a pair of full PC floor boards facing each other, and place concrete between the sides of the full PC floor boards Forming a space, the top of the corrugated top of the cotter of one full PC floor board faces the top of the corrugated top of the cotter of the other full PC floor board, and the corrugated valley bottom of the cotter of one full PC floor board is It faces the corrugated valley bottom of the other full PC floor board,Projects from the bottom of each valley of the corrugated cotterThe connecting part of the reinforcing bar and the other full PC floor boardProjects from the bottom of each valley of the corrugated cotterSo that the connecting parts of the reinforcing bars are close and parallel to each other,ApproachFit one steel sleeve into the connecting part of the two rebars paralleled, press the wedge into the center hole of the steel sleeve and connect the connecting part of the two rebars,SaidA formwork plate is placed under the placement space.In addition, two linear reinforcements sandwiching each steel sleeve on the upper side or the lower side of the connecting portion of the reinforcing bar in the vicinity of both end faces in the longitudinal direction of the connecting portion of the reinforcing bar of each steel sleeve. Reinforcing bars are arranged in parallel with the sides of the full PC floor plate along both longitudinal end faces of the connecting portions of the reinforcing bars of the steel sleeves, or for connecting reinforcing bars of the steel sleeves. Reinforcing bars in the form of a ring so as to surround each steel sleeve at a predetermined distance from each steel sleeve on the upper or lower side of the connecting portion of the reinforcing bar away from both longitudinal end faces of the part Reinforce eachThen, concrete is placed in the placement space, and the full PC floor boards are fixed and integrated with each other.
[0008]
  In the form of a preferable invention, as the full PC floor board, the following (A) to (C)fullUse PC floorboard.
(A)fullThe shape of the PC floor board is a rectangular shape having a long side portion and a short side portion in plan view, and at least one side portion of the long side portion and the short side portion is a wave-shaped cotter in plan view,fullA vertical reinforcing bar in which a lower reinforcing bar and an upper reinforcing bar are embedded in a PC floor board, and the lower reinforcing bar is arranged in parallel with the long side portion.TheIt is composed of a grid-like reinforcing bar consisting of horizontal reinforcing bars arranged at right angles to the vertical reinforcing bars and spaced apart from each other, and the upper reinforcing bars are arranged in parallel with the long sides and spaced apart from each other.TheConsists of lattice reinforcing bars composed of transverse reinforcing bars arranged at a right angle to the vertical reinforcing bars and at intervals, at least the portion of the reinforcing reinforcing bars that form the reinforcing bars on the upper side and / or the ends of the longitudinal reinforcing bars Is protruded at a right angle from the bottom of each corrugated cotter to the plane including each bottom, and used as a connecting part for reinforcing bars.fullPC floor board.
(B) As a full PC floor boardfullThe shape of the PC floor board is a rectangular shape having a long side portion and a short side portion in plan view, and at least one side portion of the long side portion and the short side portion is a wave-shaped cotter in plan view,fullThe lower and upper rebars are embedded in the PC floor board,The lower rebar is composed of a grid-like rebar consisting of vertical rebars arranged at intervals in parallel with the long sides and transverse rebars arranged at right angles to the vertical rebars and at intervals. The upper rebar is composed of a lattice rebar composed of vertical rebars spaced in parallel with the long side portion and transverse rebars disposed substantially perpendicular to the vertical rebars and spaced apart from each other. The part from the end of the horizontal reinforcing bar or the vertical reinforcing bar of the grid-like reinforcing bar constituting the reinforcing bar protrudes from the bottom of each corrugated cotter at a substantially right angle to the surface including the bottom of the corrugated cotter. The ends of the horizontal and vertical rebars of the grid-like rebars that make up the lower rebar are located at the tops of the corrugated cotters,Many U-shaped reinforcing barsSaidU-shaped two side portions of each U-shaped reinforcing bar, which are arranged across the extended region of the lower reinforcing bar and the extended region of the upper reinforcing bar facing the top of the corrugated cotter near the side Including the surfacefullIt is arranged so as to be perpendicular to the upper or lower surface of the PC floor board, and one U-shaped side part of each U-shaped reinforcing bar is in contact with the extension area of the lower reinforcing barSaidDirected in the direction intersecting the side, the other U-shaped side of each U-shaped reinforcing bar is in contact with the extension area of the upper reinforcing barSaidDirected in the direction intersecting the sidefullPC floor board.
(C) As a full PC floor boardfullThe shape of the PC floor board is a rectangular shape having a long side portion and a short side portion in plan view, and at least one side portion of the long side portion and the short side portion is a wave-shaped cotter in plan view,fullThe lower and upper rebars are embedded in the PC floor board,The lower rebar is composed of a grid-like rebar consisting of vertical rebars arranged at intervals in parallel with the long sides and transverse rebars arranged at right angles to the vertical rebars and at intervals. The upper rebar is composed of a lattice rebar composed of vertical rebars spaced in parallel with the long side portion and transverse rebars disposed substantially perpendicular to the vertical rebars and spaced apart from each other. The part from the end of the horizontal reinforcing bar or the vertical reinforcing bar of the grid-like reinforcing bar constituting the reinforcing bar protrudes from the bottom of each corrugated cotter at a substantially right angle to the surface including the bottom of the corrugated cotter. And fullPC floor boardofRebar connection partButProject from the bottom of the corrugated cotter valleyHaveIn the side,fullThe end face of the corrugated cotter on the lower half of the PC floorfullThere is a substantially horizontal step between the end face of the corrugated cotter on the upper half of the PC floor board,fullThe end face of the corrugated cotter on the lower half of the PC floor board is the amount of the stepped portion.fullIt protrudes from the end face of the upper half corrugated cotter of the PC floor board, and the connecting portion of the reinforcing bar protrudes from the bottom of the upper half corrugated cotterfullPC floor board.
[0009]
  Also,This inventionIn the space for placing concrete on the upper side of the beam between the sides of the pair of full PC floorboards, In the vicinity of both end faces in the longitudinal direction of the connecting part of the reinforcing bar of each steel sleeveOn the upper side or the lower side of the connecting portion of the reinforcing bar, two linear reinforcing reinforcing bars are sandwiched between the steel sleeves used for connecting the connecting portion.Along each end face in the longitudinal direction of the connecting part of the reinforcing bar of each steel sleeve,Reinforcement parallel to each side of full PC floorAlternatively, it is separated from both longitudinal end surfaces of the connecting portion of the reinforcing bar of each steel sleeve used for connecting the connecting portion.On the upper side or lower side of the connecting part of the reinforcing bar,eachSteel sleeveWhenWith a certain distance betweenEach steel sleeveTo surround,Reinforce each ring-shaped reinforcing barBut the aboveReinforcement of linear reinforcing bars,AboveCombined with ring reinforcement reinforcementIn some cases.
[0010]
When you want to secure enough space for the connection work even in the case of narrow beams, etc. by shifting the connection position of the connecting part of the reinforcing bar in the width direction of the space from the center position of the concrete placement space The length of the connecting part of the reinforcing bar protruding from the end face of one full PC floor is at least twice the length of the steel sleeve plus a little extra length, A state in which the length of the connecting portion of the reinforcing bar protruding from the end face of the PC floor board is at least longer than the length of the steel sleeve plus a little extra length, and one full PC floor board is arranged at a predetermined position In this case, a steel sleeve is fitted to a long reinforcing bar connecting portion of one full PC floor panel, and this is connected to a reinforcing bar connecting portion at a position where it does not interfere with the placement of the other full PC floor plate at a predetermined position. Fixed with etc. After placing the other full PC floor board in place, unfasten the steel sleeve to the connecting part by the restraining line etc., and connect the steel sleeve to the short reinforcing bar of the other full PC floor board The steel sleeve is fitted to the part from the tip of the connecting part of the reinforcing bar of the other full PC floor board while moving to the part from the tip of the working part, and the steel sleeve is biased toward the other full PC floor board side Then, the wedge is press-fitted into the hole in the center of the steel sleeve, and the long reinforcing bar connecting portion and the short reinforcing bar connecting portion are connected.
[0011]
【Example】
A first embodiment is shown in FIGS. 1 to 19 and is an example in which the present invention is applied to a case where a full PC floor board is fixed to a steel beam of a steel structure building frame.
The full PC floor board 10 is made of reinforced concrete and is composed of a plate having the same thickness with the lower surface 10a and the upper surface 10b being flat, and the shape in plan view has a long side portion A and a short side portion B as shown in FIG. The sides A and B are each provided with a corrugated cotter in plan view.
For example, as shown in FIG. 4, the wave shape constituting the cotters of the side portions A and B is a base Ta of a large number of isosceles triangles having the same shape (the isosceles right triangle is shown) Ta.2Are arranged on the straight line S1 in succession, and each equilateral part Ta1And a sharp portion on the upper side of the waveform is slightly parallel to the base S1.1A straight line S1 that is slightly parallel to the base is cut off at2A number of equilateral parts Ta1Straight line of the uncut part, upper straight line Sl1And the lower straight line Sl2Or a straight line Sl.1, Sl2Is replaced by a circular arc line, and is formed by a plurality of straight lines of the part that is not cut out of the equal side part, an upper and lower circular arc line, and an uneven line composed of a lower circular arc line.
The wave shape constituting the cotters of the side portions A and B is not limited to the above shape, and may be another shape (for example, a rectangular wave).
The upper straight line Sl1Alternatively, the arc line portion corresponds to the wave-shaped top portion 10p, and the lower straight line Sl2Or the part of a circular arc line is equivalent to the corrugated valley bottom part 10r.
[0012]
As shown in FIGS. 1 to 3 and FIGS. 8 to 10, the full PC floor board 10 is made of concrete and is reinforced with a lower reinforcing bar 11, an upper reinforcing bar 12, a U-shaped reinforcing bar 13, and the like.
The lower reinforcing bar 11 has a lattice shape including vertical reinforcing bars 11a arranged in parallel with the long side portion A and spaced reinforcing bars 11a at right angles to the vertical reinforcing bars 11a. Consists of reinforcing bars. Both ends of each vertical reinforcing bar 11a are located inside the wave-shaped top 10p of the short side B of the full PC floor board 10, and both ends of each horizontal reinforcing bar 11b are wave-shaped top 10p of the long side A of the full PC floor board 10. Located inside.
The upper reinforcing bar 12 is a grid-like reinforcing bar composed of vertical reinforcing bars 12a arranged in parallel with the long side portion A and transverse reinforcing bars 12b arranged at right angles to the vertical reinforcing bars 12a. It is configured. The portions from both ends of each vertical reinforcing bar 12a protrude from the corrugated valley bottom 10r of the short side B of the full PC floor board 10 by a predetermined length and are connected portions 12a.1The portions from both ends of each horizontal reinforcing bar 12b protrude from the corrugated bottom 10r of the long side portion A of the full PC floor board 10 by a predetermined length and are connected portions 12b.1It has become. A straight line connecting the valley bottoms in parallel to the straight line connecting the corrugated valley bottoms 10r of the long side A and the short side B of the full PC floor board 10 around the lattice reinforcing bars of the upper reinforcing bars 12 The end reinforcing reinforcing bars 12c and 12d are arranged so as to be close to each other. In the illustrated example, the vertical reinforcing bar 11a of the lower reinforcing bar 11 is positioned below the end reinforcing bar 12c, and the horizontal reinforcing bar 11b of the lower reinforcing bar 11 is positioned below the end reinforcing bar 12d. Yes.
[0013]
As shown in FIGS. 2 and 3, the large number of U-shaped reinforcing bars 13 are formed between the extension area of the lower reinforcement 11 and the extension area of the upper reinforcement 12 in the vicinity of the long side portion A. They are arranged so that they are connected, so that the surface including the two U-shaped side portions 13a, 13b of the U-shaped reinforcing bar 13 is perpendicular to the upper and lower surfaces 10b, 10a of the full PC floor 10. Is done. The U-shaped one side (lower side) 13a of each U-shaped reinforcing bar 13 is in the same plane as the surface including the horizontal bar 11b of the lower bar 11 and extends from the end of the horizontal bar 11b. The U-shaped other side (upper side) 13b of each U-shaped reinforcing bar 13 is in contact with the portion, and the inner side of the other side (upper side) 13b is on the upper surface of the vertical reinforcing bar 12a and the end reinforcing bar 12c of the upper reinforcing bar 12. The bars are arranged parallel to the horizontal reinforcing bars 12a so as to be in contact with each other.
In the full PC floor 10 shown in FIGS. 2 and 3, a large number of U-shaped reinforcing bars 13 are extended only in the vicinity of the long side portion A, and the extending area of the lower reinforcing bar 11 and the extending area of the upper reinforcing bar 12. Are connected to each other, but not only in the vicinity of the long side portion A but also in the vicinity of the short side portion B, a large number of U-shaped reinforcing bars 13 are connected to the lower side reinforcing bars. You may arrange similarly between the extension area of 11 and the extension area of the upper rebar 12.
Instead of the U-shaped reinforcing bar 13, the part from the end of the horizontal reinforcing bar 11b of the lower reinforcing bar 11 is folded back into a U shape at right angles to the upper and lower surfaces 10b, 10a of the full PC floor 10, The portion folded back in the U shape can be used as a reinforcing bar.
The end reinforcing bars 12c and 12d and the U-shaped reinforcing bar 13 of the full PC floor 10 serve as reinforcing bars when the full PC floor 10 is arranged on the beam.
The wave-shaped cotter should be arranged in accordance with the distance between the lower and upper rebars 11a, 11b, 12a and 12b. Usually, the wave shape is based on an isosceles triangle with an interval of about 200 mm. do it.
As the reinforcing bars 11a, 11b, 12a, 12b, 12c, and 13, for example, deformed steel bars having irregularities on the surface as shown in (a) and (b) of FIG. 5 are used.
[0014]
A method of fixing the full PC floor board 10 to the steel beams 1 and 2 will be described.
A large number of steel frames and other pillars are built on the foundation of the building frame, H-beams 1 are placed between the columns, and both ends of each beam 1 are joined to the columns. The small beams 2 of H-shaped steel are arranged, and both ends of each small beam 2 are joined to the large beam 1.
A large number of full PC floor boards 10 are laid on the beams 1 and 2 with a space for placing post-cast concrete after the construction of the building frame.
A large number of full PC floor boards 10 have their side portions A and B connected to the upper surfaces 1a of the flanges 1a and 2a on the upper side of the large beam 1 and the small beam 2, respectively.1, 2a1Placed on top and laid. In the example shown in FIGS. 6 to 11, the long side portion A of the full PC floor board 10 is placed on the small beam 2 and the short side portion B is placed on the large beam 1.
The opposing long side portions A of the pair of full PC floor boards 10 are fixed to the beam 2 as follows. As shown in FIGS. 6 and 8 to 11, the corrugated valley bottom portion of the long side portion A of one full PC floor board 10 and the corrugated valley bottom portion of the long side portion A of the other full PC floor board 10 are formed. The connecting portion 12b of the horizontal reinforcing bar 12b of the upper reinforcing bar 12 that is opposed to each other and protrudes from the corrugated bottom of the full PC floor board 101Are parallel to each other with a small gap.
[0015]
The connecting portions 12b of the horizontal reinforcing bars 12b arranged in parallel in the plan view of both full PC floor boards 10 and overlapped in the front view1One steel sleeve Sv is fitted in the hole, and a hole Sv in the center of each steel sleeve Sv is used by using a hydraulic tool.2The wedge Wg is press-fitted into the horizontal reinforcing bar 12b and the connecting portion 12b.1The connection portion 12b of the pair is obtained by causing the uneven portion of the outer peripheral surface of the steel to bite into the steel sleeve Sv.1Are integrated and connected. After that, the upper surface 2a of the flange 2a of the beam 21The base of the stud Sd with head is welded to a predetermined position of, and the placement space Sp between the full PC floor boards 10 is1Concrete is cast on the long side A of both full PC floor boards 10 to the beam 2 and the long side A of both full PC floor boards 10 are integrated with each other to complete the construction of the joint. .
As shown in FIGS. 12 and 13, the steel sleeve Sv is a hole Sv into which a connecting portion of two reinforcing bars is inserted.1And the hole Sv into which the wedge is press-fitted in the center2And.
As the headed stud Sd, a headed stud that conforms to JISB1198 has a length after welding that is four times or more the shaft diameter.
[0016]
In the same manner, the short sides B of adjacent pairs of full PC floor boards 10 are fixed to the large beam 1 and at the same time the short sides B are joined together. As shown in FIGS. 7 and 11, the upper surface 1a of the upper flange 1a of the girder 1 is shown.1In the above, the short side B of one full PC floor board 10 and the short side B of the other full PC floor board 10 are opposed to each other at a predetermined interval, and the short side parts B of both full PC floor boards 10 are opposite to each other. Connecting portion 12a of vertical reinforcing bar 12a protruding from the corrugated valley bottom1Are arranged substantially parallel to each other with a small interval in plan view. Connecting portion 12a of pair of vertical reinforcing bars 12a1The holes Sv of one steel sleeve Sv1Through the center hole Sv of the steel sleeve Sv.2The wedges Wg are press-fitted and connected to each other. For example, as shown in FIG. 11, the headed stud Sd is formed in one space surrounded by the corrugated irregularities of one full PC floor board 10 and the corrugated irregularities of the other full PC floor board 10 facing this. For example, the connecting portion 12a of the reinforcing bar of each floor board 101One is planted near the tip of each. Then, the placement space Sp2Concrete is cast into the two, and the short side portions B of both full PC floor boards 10 are fixed to the large beam 1 and the short side parts B of each full PC floor board 10 are fixed to each other.
[0017]
Reinforcing bar connecting portion 12a on the upper side of full PC floor board 101, 12b1Hole Sv of Steel Sleeve Sv1How to insert into is explained.
Each of the connecting portions 12a protruding from the bottom of the valley after laying one of the opposing full PC floor boards 10 on the beams 1 and 21, 12b1Hole Sv of steel sleeve Sv1And connect this to the connecting portion 12a with a restraining wire or the like.1, 12b1After the other full PC floor board 10 is laid on the beams 1 and 2, the connecting portion 12a by the restraining line of the steel sleeve Sv is fixed.1, 12b1Unfasten the steel sleeve Sv to the connection part 12a1, 12b1The hole Sv of the steel sleeve Sv while moving to the part from the tip of the steel1A connecting portion 12a protruding from the bottom of the bottom of the other full PC floor 101, 12b1Fit into the part from the tip. Then, as shown in FIGS. 8, 9 and 11, the hole Sv in the central portion of the steel sleeve Sv is located at the center position in the width direction of the upper flanges of the beams 1 and 2.2The wedge Wg is press-fitted to a predetermined depth using a press-fitting tool.
The connecting portion 12a1, 12b1The connection position between them is not limited to the center position in the width direction of the beam (the center position of the concrete placement space), and may be biased toward one of the full PC floor boards. Connection part 12a1, 12b1If the connecting position is shifted in the width direction from the center position in the width direction of the beam, even if the width of the beam is narrow, a space necessary for the connection work can be easily secured.
[0018]
When the connecting position of the connecting portion of the reinforcing bar is shifted in the width direction from the center position of the beam, for example, the length of the connecting portion of the reinforcing bar protruding from the end face of one full PC floor board is at least the length of the steel sleeve Sv. The length of the connecting portion of the reinforcing bar protruding from the end face of the other full PC floor board is set to at least the length L of the steel sleeve Sv. After placing one full PC floor board on the beam, the length of the steel sleeve Sv is fitted into the long reinforcing bar connecting part of one full PC floor board. This is moved to a position where it does not interfere with the placement of the other full PC floor plate on the beam as shown by a two-dot chain line in FIG. 8, and fixed to the connecting portion of the reinforcing bar at that position with a restraining line or the like. Then, the other full PC floor board is placed on the beam, and the steel sleeve Sv Unfastening the connecting portion by a bundled wire or the like, and moving the steel sleeve Sv to the portion from the tip of the short connecting portion of the other full PC floor plate, the hole of the steel sleeve Sv is moved to the other full PC floor plate. 10 is inserted into the part from the tip of the short connecting part, the steel sleeve Sv is placed at a position biased to the other full PC floor plate side, and the wedge Wg is inserted into the hole in the central part of the steel sleeve Sv using a press fitting device. It press-fits to a predetermined depth, and connects the connecting part of the long reinforcing bar and the connecting part of the short reinforcing bar. In addition, you may perform the operation | work which fits the hole of steel sleeve Sv in the part for connection of the long rebar of one full PC floor board before mounting one full PC floor board on a beam.
[0019]
FIG. 12 shows the resistance mechanism of the concrete around the steel sleeve Sv. Hole Sv of steel sleeve Sv2The connecting portion 12a of the pair of reinforcing bars 12 on the upper side of the opposing full PC floor board 10 connected by press-fitting the wedge Wg1, 12b1Each has a tensile force P1, P2When these act, these connecting portions 12a1, 12b1The steel sleeve Sv tries to rotate due to the torque caused by the eccentricity of the connecting portion of the steel. However, the concrete around the steel sleeve Sv is mainly resisted by the supporting pressure Q, and the concrete is damaged due to excessive cracking or the like. Since the rotation of the steel sleeve Sv is restricted unless it occurs, the connecting portion 12a of the pair of reinforcing bars 12 is used.1, 12b1The tensile force P acting between the pair of full PC floor plates 10 even if one steel sleeve Sv is connected.1, P2Can be reliably transmitted via the steel sleeve Sv.
[0020]
When it is desired to connect the connecting portions of the upper reinforcing bars 12 and the connecting portions of the lower reinforcing bars 11 of the full PC floor board 10, the full PC floor board 10 has, for example, a wave shape shown in FIG. 14. A connecting portion 12a from the ends of the vertical and horizontal reinforcing bars 12a and 12b of the upper reinforcing bar 12 from the valley bottom 10r of the cotter.1, 12b1And a connecting portion 11a from the ends of the vertical and horizontal reinforcing bars 11a and 11b of the lower reinforcing bar 111, 11b1Are protruded slightly apart in a plane, and the connecting portions of the upper reinforcing bars 12 and the connecting portions of the lower reinforcing bars 11 of the full PC floor board 10 facing each other as connecting bars are connected to the steel sleeve Sv and the wedge. Connect using the connection method using Wg. In this case, the connection work is somewhat complicated, but the integrity of the full PC floor boards is further strengthened.
In the full PC floor board 10 shown in FIG. 14, the length of the corrugated valley bottom of the cotter is lengthened, and the portion corresponding to the corrugated top 10p of the cotter of the long side A or the short side B thereof. A large number of U-shaped reinforcing bars 13 are arranged over the extending area of the lower reinforcing bar 11 and the extending areas of the upper reinforcing bar 12 and the end reinforcing bars 12c and 12d, and two U-shaped sides of the U-shaped reinforcing bar 13 The surface including the portion is arranged so as to be perpendicular to the upper and lower surfaces of the full PC floor 10, and one U-shaped side portion of each U-shaped reinforcing bar 13 is the side of the lower reinforcing bar 11. It arrange | positions in parallel with the rebar 11b or the vertical rebar 11a, and is arrange | positioned in parallel with the horizontal rebar 12b or the vertical rebar 12a of the upper rebar 12 of the other (upper) side part of those U type | molds.
[0021]
The flange width of the beams 1 and 2 made of H-shaped steel is narrow, and the connecting portion 12a on the beams 1 and 21, 12b115 to 17, the upper half of the corrugated cotter of the long side portion A and the short side portion B of the full PC floor board 10 is corrugated as shown in FIGS. The end face 10c of the corrugated cotter is cut at a right angle along the end face of the cotter in plan view, and the vertical end face 10c of the upper half is cut.2And an intermediate horizontal step 10c.3And the lower half vertical end face 10c1A connecting portion 12a of the upper reinforcing bar 12 as an end surface having a stepped portion in the middle1, 12b1The space for connection is widened so that a sufficient space for connection work by the steel sleeve Sv can be secured. If it does in this way, absorption of an installation error at the time of laying full PC floor board 10 will also become easy.
[0022]
  In FIGS. 1 to 11, an example in which a reinforcing bar is not applied to a joint portion by placing cast-in-place concrete is illustrated, but the upper side of the beams 1 and 2 between the side portions A and B of both full PC floor boards 10. Upper surface 1a of flanges 1a and 2a1, 2a1Upper concrete placement space Sp1Inside, the connecting portion 12b connected by the connecting method using the steel sleeve Sv of the upper rebar 12 and the wedge Wg1, 12a1On the top ofThat is, the connecting portion 12b in the vicinity of the end face in the longitudinal direction of the reinforcing bar of the steel sleeve Sv. 1 , 12a 1 On the top ofAs shown in FIG. 18, two linear reinforcing bars 14 are sandwiched between the steel sleeves Sv.Each side A, B along the end face of each steel sleeveArrange in parallel, or, Around each steel sleeve Sv used for connectionAs shown in FIG.The connecting portion 12b away from the longitudinal end surface of the steel sleeve Sv. 1 , 12a 1 On the upper side of each steel sleeve SvWith a certain distance betweenSteel sleeve SvReinforcing ring reinforcing bars 15 so as to surround eachTo do.These reinforcing bars 14 and 15 restrain cracks generated around the steel sleeve Sv when a large tensile force acts between the full PC floor plates 10 facing each other.
  The fact that the reinforcement bars 14 and 15 are effective for improving the transmission performance of the tensile force has been clarified as a result of a tensile experiment, and the reinforcement reinforcement bars 14 and 15 are arranged according to the required tensile force transmission performance. StreakRu.
[0023]
  Example 2 is an example shown in FIGS. 20 and 21 in which the full PC floor boards 10 are joined together and the full PC floor board 10 and a full precast RC beam (referred to as a full PCRC beam) 3 are joined.
  As the full PCRC beam 3, a large number of barbs 3b are arranged around the main beam 3a extending in the longitudinal direction of the beam at intervals in the longitudinal direction of the beam. A pair of inverted U-shaped rebars 3c, 3c are arranged perpendicularly to the longitudinal direction of the beam at a number of locations spaced in the longitudinal direction of the beam on the upper side of the beam reinforcing bar consisting of the reinforcing bars 3b. Only the upper part of the reinforcing bar 3c is exposed, and the lower part of the beam main reinforcing bar 3a, the reinforcing bar 3b and the inverted U-shaped reinforcing bar 3c are embedded in concrete. A recess 3d serving as a shear cotter is provided at a portion where the pair of inverted U-shaped reinforcing bars 3c and 3c on the upper side surface 3d of the full PCRC beam 3 is exposed.1(In the illustrated example, a shallow shallow concave portion in a plan view) is formed.The upper portion of the exposed inverted U-shaped reinforcing bar 3c is a full PC floor plate when the full PC floor plate 10 is placed on the full PCRC beam 3, as shown in FIGS. The lower U-shaped reinforcing bar 3c is not obstructed by the connecting work of the reinforcing bar connecting portion of the full PC floor board.
  The exposed portion of the pair of inverted U-shaped reinforcing bars 3c arranged at small intervals is the concrete placement space Sp on the upper surface 3d of the full PCRC beams 3, 3.2The connecting portion 12b of the reinforcing bar 12 above the long side A and the short side B of the full PC floor board 10 protruding inward.1, 12a1And the steel sleeve Sv is arranged between them in a plan view.
  In addition, as the full PC floor board 10, the same thing as the full PC floor board shown by FIGS. 1-5 of Example 1 is used.
[0024]
Reinforced concrete (RC) buildings have many RC columns built on the foundation, the full PCRC beams 3 are arranged between the columns, and both ends of each full PCRC beam 3 are connected to the columns. Joined and constructed. A long side A and a short side B of a large number of full PC floor boards 10 are placed on each full PCRC beam 3 of the building frame, and the upper reinforcing bars 12 projecting from the valley bottoms of the adjacent full PC floor boards 10. Connecting portion 12b of the pair to be connected1, 12a1One steel sleeve is fitted in each, and the hole Sv of each steel sleeve Sv2Each pair of connecting portions 12b is pressed into the wedge Wg1, 12a1After connecting each other, the placement space Sp between the end faces of the full PC floor board 10 on the full PCRC beam 32Place cast-in-place concrete. Thereby, after the concrete is hardened, the full PC floorboards 10 and the full PC floorboards 10 and the full PCRC beam 3 are firmly integrated, and can resist a load such as a vertical load or a seismic force.
[0025]
The shape of the shear cotter formed on the upper side of the full PCRC beam 3 is not limited to the square shape shown in FIGS. 20 and 21 and may be any shape such as a rectangle, a circle, an ellipse, The depth of the shear cotter is suitably about 10 mm to 30 mm. If the depth is about this level, there is usually no interference with the reinforcement of the full PCRC beam 3 (that is, the main reinforcement 3a and the gluteal reinforcement 3b). This is convenient for the production of the full PCRC beam 3.
Further, instead of the shear cotter, it is possible to roughen the upper surface portion of the precast RC beam on which the cast-in-place concrete is cast to transmit the shearing force of the joint portion.
[0026]
In Example 2, when it is desired to connect the connecting portions of the upper reinforcing bars 12 and the connecting portions of the lower reinforcing bars 11 of the full PC floor board 10, the full PC floor board 10 shown in FIG. The connecting portions of the upper reinforcing bars 12 of the full PC floor board 10 and the connecting portions of the lower reinforcing bars 11 are connected by a connecting method using the steel sleeve Sv and the wedge Wg.
The embodiment shown in FIGS. 20 and 21 is not limited to a full precast RC beam but can be applied in the same manner to a full precast steel reinforced concrete beam (referred to as a full SRC beam).
[0027]
  Example 3 is an example in which a full PC floor plate 20 and a half precast RC beam (referred to as a half PCRC beam) 4 are joined and the full PC floor plates 20 are joined together as shown in FIGS.
  As the half PCRC beam 4, a large number of barbs 4b are arranged around a large number of beam main bars 4a extending in the longitudinal direction of the beam at intervals in the longitudinal direction of the beam, and positioned above the beam. What is formed by embedding the lower part of the beam main bar 4a and the barb 4b in the concrete so that the upper part of the beam main bar 4a and the barb 4b is exposed is used. As the full PC floor board, for example, the full PC floor board 20 shown in FIGS. 22 and 23 is used. This full PC floor board 20 has no corrugated cotter like the full PC floor board 10 on the long side and short side of the rectangular PC floor board, and the end faces of the long side and short side of the rectangular PC floor board 20 are It is a plane in the long side direction or the short side direction.As shown in FIGS. 22 and 23, the exposed upper part of the beam main bar 4a and the barb 4b is a full PC when the full PC floor plate 20 is placed on the half PCRC beam 4. It should be located below the connecting part of the reinforcing bar on the floor board, and the upper part of the main bar 4a and the reinforcing bar 4b should not interfere with the connecting work of the connecting part of the reinforcing bar on the full PC floor board. is there.
  22 and FIG. 23 do not show a reinforcing bar corresponding to the lower reinforcing bar 11 of the full PC floor board 10 of the first embodiment, but the lower reinforcing bar of the full PC floor board 20 has the lower reinforcing bar of the first embodiment. It is assumed that the bars are arranged in the same manner as the full PC floor board 10.
[0028]
The RC building frame has many RC columns built on the foundation, half PCRC beams 4 are arranged between the columns, and both ends of each half PCRC beam 4 are joined to the columns in an appropriate manner. Is built. A large number of full PC floor plates 20 are arranged on each half PCRC beam 4 of the building frame, and a pair of reinforcing bar connecting portions 22b protruding from the end surfaces of the opposing full PC floor plates 20 are provided.1One steel sleeve Sv is fitted in the hole Sv in the center of each steel sleeve Sv.2By inserting the wedge Wg into the pair, these pairs of connecting portions 22b1After connecting, the placement space Sp between the full PC floor boards 20 on the beam3In-situ concrete is placed on the floor, and each full PC floor board 20 is fixed to the half PCRC beam 4.
In addition, it is a preferable method in order to ensure the shearing force transmission of a joint part to make the upper surface part of the half PCRC beam 4 in which a cast-in-place concrete is poured into a rough surface. As a result, the reinforcing bar 4b of the half PCRC beam 4 exhibits an effect of preventing displacement displacement in horizontal joining, and after the concrete is hardened, the full PC floor board 20 and the half PCRC beam 4 are firmly integrated, It can resist loads such as vertical load and seismic force.
[0029]
22 and FIG. 23 show an example in which only the upper reinforcement of the full PC floor board 20 is connected, but the lower side of the full PC floor board 20 is slightly lowered by lowering the position of the exposed reinforcing bar on the upper side of the half PCRC beam 4. Reinforcing bars can also be connected.
In the example shown in FIGS. 22 and 23, the shape of each side portion of the full PC floor board 20 is linear in plan view. However, each side portion is configured by a cotter having a trapezoidal shape, a wave shape, or the like. The integrity of the full PC floor plate and the half PCRC beam 4 may be further improved by using the obtained one (for example, the full PC floor plate 10 of the first embodiment).
The embodiment shown in FIGS. 22 and 23 is not limited to a half precast RC beam, but can be applied in the same manner to a half precast steel reinforced concrete beam (referred to as a half SRC beam).
[0030]
Example 4 is an example in which the full PC floor boards 10 are joined to each other as shown in FIG. 24 and FIG. 25, and can be adopted as a joining method of full PC floor boards in road and bridge floor laying construction. As the full PC floor board 10, the same one as the full PC floor board shown in FIGS.
In this case, the concrete placement space Sp formed between the full PC floor plates 10 facing each other.4A mold plate Mp for preventing the concrete from flowing out is disposed on the lower side. Connecting portion 12b of reinforcing bar 12 on the upper side of full PC floor board 101, 12a1The method of joining is the same as that of the first embodiment.
When connecting the connecting portions of the upper reinforcing bars 12 and the connecting portions of the lower reinforcing bars 11 of the full PC floor plate 10 connected to each other, for example, the full PC floor plate 10 shown in FIG. The connecting portions of the upper reinforcing bars 12 and the connecting portions of the lower reinforcing bars 11 of the full PC floor board 10 are connected by a connecting method using a steel sleeve Sv and a wedge Wg.
[0031]
  Also in the case of the above Examples 2 to 4, as in the case of Example 1, as shown in FIG. 18, the two linear reinforcing bars 14 are arranged in parallel with the steel sleeves Sv interposed therebetween. Alternatively, as shown in FIG. 19, a ring-shaped reinforcing bar 15 is arranged around each steel sleeve Sv so as to surround them.To do.Also in the case of Examples 2 to 4, the reinforcing bars 14 and 15 correspond to the required tensile force transmission performance.Reinforcement.
[0032]
【The invention's effect】
  The present invention includes the configurations described in the claims of the claims, thereby enabling the following (a) to (F).
(B) Claim 1InventionThe fixing method of the full PC floor board isAs a full PC floor board,The shape of the full PC floor board is made into a rectangular shape having a long side part and a short side part in a plan view, and at least one side part of the long side part and the short side part of the full PC floor board is a wave-shaped cotter in a plan view,What was manufactured as a part for connecting reinforcing bars by projecting the ends of many reinforcing bars embedded in the full PC floor board from each valley bottom of the corrugated cotter substantially perpendicular to the surface including each valley bottom. use,The top of the corrugated cotter of one full PC floor panel adjacent to each other faces the top of the corrugated cotter section of the other full PC floor panel adjacent to each other, and the bottom of the corrugated cotter of the one full PC floor panel The side portions of the plurality of full PC floor plates are placed on the steel beam of the building frame so that the portion faces the wave-shaped valley bottom of the other full PC floor plate, and each of the full PC floor plates facing each other Each full PC floor board that forms a concrete placement space between sides and is adjacent to each otherofProjects from the bottom of each valley of the corrugated cotterRebarConnecting part and other full PC floor boardofThe connecting parts protruding from the bottom of each valley of the wave-shaped cotter are close to each other and positioned in parallel,ApproachFit one steel sleeve to the connecting part of two rebars paralleled, press the wedge into the center hole of each steel sleeve and connect the connecting part of the two rebars,SaidWeld the base of the stud with head to the upper surface of the steel beam in the placement space.The two straight reinforcing bars are sandwiched between the copper sleeves on the upper side or the lower side of the reinforcing bar connecting parts in the vicinity of both end faces in the longitudinal direction of the reinforcing bar connecting parts of the steel sleeves. , Along the both longitudinal end faces of the connecting portion of each steel sleeve reinforcing bar, parallel to the side of the full PC floor plate, or of the connecting portion of each steel sleeve reinforcing bar Ring-shaped reinforcing bars are placed above or below the connecting parts of the reinforcing bars away from both end faces in the longitudinal direction so as to surround each steel sleeve with a predetermined distance between each steel sleeve. ReinforcementThe concrete is placed in the placement space, and the full PC floor boards are fixed to the steel beam and the full PC floor boards are fixed to each other.(1)-(6)The effect of.
(1)Provided on each side of the full PC floor plate against the in-plane shear force that occurs at the joint surface between the concrete part of the full PC floor plate, the part of cast-in-place concrete, and the steel beam, and the in-plane shear force that acts on the slab during an earthquake Corrugated cotters, headed studs welded to steel beams, and connection of rebar connection parts by steel sleeve and wedge press-fitInThus, the structural integrity equivalent to that of the cast-in-place concrete slab can be exhibited by the shear resistance due to the tensile force transmission between the full PC floor plate and the steel beam and between the full PC floor plates.
(2) Since the on-site welding is not required to fix the full PC floor panel other than welding the headed stud to the steel beam, the construction work of the full PC floor panel is not affected by the weather and the construction process is delayed. Absent.
(3)Since it has structural performance equivalent to that of cast-in-place concrete slabs, it is possible to change part or all of the flooring method designed as cast-in-place concrete slabs to slabs by the full PC floor board fixing method of the present invention at the construction stage. Yes, the degree of freedom in the construction method can be increased.
(4)Since the space on the slab can be used as a stock yard after the full PC floor board has been laid and fixed, it is possible to carry out pre-lifting of finishing materials and the like, and the overall construction period can be shortened.
(5)One steel sleeve is fitted in the connecting part of two rebars made parallel, and a wedge is press-fitted into the center hole of the steel sleeve to connect the connecting parts of the two reinforcing bars together. BodyofWhen laying a plurality of full PC floor boards on a beam, the space between the long or short sides of each full PC floor board can be reduced, and even a building frame using narrow beams PC floor boardTheIt can be securely fixed to the beam.
[0033]
(6) For connecting reinforcing bars in the vicinity of both end faces in the longitudinal direction of the reinforcing bar connecting portions of the steel sleeves in the concrete placement space on the upper side of the beam between the sides of the pair of full PC floor boards Two straight reinforcing bars sandwiching each steel sleeve on the upper side or the lower side of the part, along both longitudinal end faces of the connecting part of each steel sleeve reinforcing bar, Since the bars are arranged in parallel with the sides, even if a large tensile force acts between the opposing full PC floor boards, the cracks generated in the concrete around the steel sleeve are constrained and effective in improving the transmission performance of the tensile force. It is.
Alternatively, in the placement space, each steel used for connecting the reinforcing bars on the upper side or the lower side of the connecting parts of the reinforcing bars away from both longitudinal end surfaces of the connecting parts of the reinforcing bars of each steel sleeve. Even if a large tensile force acts between the full PC floor plates facing each other, a ring-shaped reinforcing bar is arranged to surround each steel sleeve at a predetermined distance from the steel sleeve. Restrains cracks in the concrete around the sleeve and is effective in improving the transmission performance of tensile force.
One steel sleeve is fitted into the reinforcing bar connection part of one full PC floor panel and the reinforcing bar connection part of the other full PC floor panel, and a wedge is press-fitted into the center hole of the steel sleeve to Since the connecting parts are directly connected, the number of the linear reinforcing bars is two, or only one ring-shaped reinforcing bar is arranged for each steel sleeve used for connecting the reinforcing bars. Can be demonstrated.
[0034]
(B) According to the method for fixing a PC floor board according to the invention of claim 2, not only the effects (3) to (6) of (A) above can be achieved but also the following (7) The effect of.
(7) In-plane shear force generated on the joint surface between the concrete part of full PC floor slab, the part of cast-in-place concrete, and the concrete part of full PCRC beam or full PCSRC beam, or in-plane shear force acting on the slab during an earthquake A corrugated cotter provided on each side of the full PC floor, a concave or rough surface portion of the upper surface of the full PCRC beam or full PCSRC beam, a connecting reinforcing bar portion protruding from the upper surface of the beam, and a steel sleeve and wedge Structural integrity equivalent to cast-in-place concrete slabs due to shear resistance due to tensile force transmission between full PCC beams or full PCSRC beams by connecting parts for connecting reinforcing bars by press fitting Even if the beam of the building frame is a full PCRC beam or a full PCSRC beam, Can be firmly fixed to the PCRC beam or full PCSRC beams.
[0035]
(C) When the full PC floor board fixing method according to the invention of claim 3 is employed, the same effects as the effects (3) to (6) of (A) above can be achieved, and the following (8 ). (8) For the in-plane shear force generated on the joint surface between the concrete part of full PC floor slab, the part of cast-in-place concrete, and the concrete part of half-PCRC beam or half-PCS RC beam, or in-plane shear force acting on the slab during an earthquake The upper part of the beam main bar and the reinforced bar beam protruding from the upper surface of the half PCRC beam or the half PCSRC beam, the rough surface part of the upper surface of the beam, and the connection of the reinforcing bar connecting part by press fitting of the steel sleeve and the wedge By using the shear resistance due to the tensile force transmission between the full PC floor board and half PCRC beam or half PCSRC beam and between the full PC floor boards, the structural integrity equivalent to that of the cast-in-place concrete slab can be demonstrated. Even if is a half-PCRC beam or half-PCSRC beam, the full-PC floor panel is half-PCRC beam or half-P. It can be firmly fixed to the SRC beams.
[0036]
(D) When the full PC floor board fixing method according to the invention of claim 4 is used, not only the effects (3) to (4) and (6) of (A) above can be achieved, but also The effect (9) is achieved.
(9) Provided on each side of the full PC floor plate against the in-plane shear force generated on the joint surface between the concrete part of the full PC floor board and the cast-in-place concrete part and the in-plane shear force acting on the slab during an earthquake Demonstrate structural integrity equivalent to cast-in-place concrete slabs by wave-shaped cotters, and shear resistance due to tensile force transmission between full PC floors by connecting steel reinforcing bars by pressing steel sleeves and wedges Can do. In addition, one steel sleeve is fitted into the connecting part of the two rebars made parallel, a wedge is press-fitted into the center hole of the steel sleeve, and the connecting part of the reinforcing bar is bitten into the steel sleeve. Since they are connected to each other, the distance between the long side portion or the short side portion of the full PC floor board can be narrowed, and the amount of on-site concrete can be reduced.
[0037]
(E) The full PC floor board fixing method according to the invention of claim 5 is a full PC floor board in which the shape of the full PC floor board is a rectangular shape having a long side portion and a short side portion in plan view, and the long side portion and At least one side of the short side is a wave-shaped cotter in plan view, the lower and upper rebars are embedded in the full PC floor board, and the lower rebar is spaced parallel to the long side. Is formed by a grid-like reinforcing bar composed of vertical reinforcing bars and horizontal reinforcing bars arranged at a right angle to the vertical reinforcing bars, and the upper reinforcing bars are spaced in parallel to the long sides. The rebars of the grid-like reinforcing bars or the vertical reinforcing bars that constitute the upper reinforcing bars The part from the end of the reinforcing bar protrudes from the bottom of each corrugated cotter at a substantially right angle to the plane including each bottom. The ends of the horizontal reinforcing bars or vertical reinforcing bars of the grid-like reinforcing bars constituting the lower reinforcing bars are located at the tops of the corrugated cotters, and a large number of U-shaped reinforcing bars. Is disposed across the extension region of the lower reinforcing bar and the extension region of the upper reinforcing bar, which are opposed to the top of the corrugated cotter in the vicinity of the side part, The surface including the side portion is arranged so as to be perpendicular to the upper or lower surface of the full PC floor board, and one U-side portion of each U-shaped reinforcing bar is in the extension region of the lower reinforcing bar. Full in which the other U-shaped side part of each U-shaped reinforcing bar is in contact with the side part and is in the direction crossing the side part. Since the PC floor board is used, not only the same effects as the above (1) to (7) and (9) can be achieved, but the following (10 And the effect of (11).
(10)Since the portion near the top is reinforced by the U-shaped reinforcing bars in the corrugated cotter of the long side and / or short side of the full PC floor board,Wavy cotterEven if the full PC floor plate is laid with the side portion placed on the beam, the contact portion of the full PC floor plate with the beam is not damaged.
(11) A portion from the end of the horizontal reinforcing bar or the vertical reinforcing bar of the grid-like reinforcing bar constituting the upper reinforcing bar protrudes from each valley bottom of the corrugated cotter substantially perpendicularly to the surface including each valley bottom. Since the connecting portion is used, it is possible to easily manufacture a full PC floor board having a connecting portion for reinforcing bars that protrudes substantially perpendicularly to the plane including each valley bottom from each valley bottom of the corrugated cotter.
[0038]
(F) The full PC floor board fixing method of the invention of claim 6 is a full PC floor board in which the shape of the full PC floor board is a rectangular shape having a long side portion and a short side portion in plan view, and the long side portion and At least one side of the short side is a wave-shaped cotter in plan view, the lower and upper rebars are embedded in the full PC floor board, and the lower rebar is spaced parallel to the long side. Is formed by a grid-like reinforcing bar composed of vertical reinforcing bars and horizontal reinforcing bars arranged at a right angle to the vertical reinforcing bars, and the upper reinforcing bars are spaced in parallel to the long sides. The rebars of the grid-like reinforcing bars or the vertical reinforcing bars that constitute the upper reinforcing bars The part from the end of the reinforcing bar protrudes from the bottom of each corrugated cotter at a substantially right angle to the plane including each bottom. In the side part where the reinforcing bar connecting part of the full PC floor board protrudes from the valley bottom of the corrugated cotter, the corrugated shape of the lower half of the full PC floor board is used. There is a substantially horizontal step between the end face of the cotter and the end face of the corrugated cotter on the upper half of the full PC floor board, and the end face of the corrugated cotter on the lower half of the full PC floor board is equivalent to the step part. Since the full PC floor board is projected from the end face of the upper half corrugated cotter and the connecting portion of the reinforcing bar projects from the bottom of the upper half corrugated cotter, In addition to the same effects as the effects 1) to 6), the following effect 12 can be achieved.
(12) The space that can be used to connect the connecting portion of the upper rebar is widened, and a sufficient space for the connection work by the steel sleeve can be secured sufficiently. In addition, it is easy to absorb installation errors when laying full PC floorboards.
Moreover, even if the interval between the end faces of the corrugated cotters on the sides of the full PC floor plates to be joined to each other is narrowed, the space required for the connection work by the steel sleeve can be sufficiently secured, so the width of the steel beam can be reduced. Even in a narrow case, a concrete floor can be easily constructed on a steel beam using this full PC floor board.
[Brief description of the drawings]
FIG. 1 is a plan view schematically showing a full PC floor board of Example 1. FIG.
FIG. 2 is a plan view showing an example of how to arrange reinforcing bars on the lower side of the full PC floor board according to the first embodiment.
FIG. 3 is a plan view showing an example of how to arrange reinforcing bars on the upper side of the full PC floor board according to the first embodiment.
4 is a plan view showing an example of the shape of a corrugated cotter of the full PC floor board of Embodiment 1. FIG.
FIGS. 5A and 5B are front views showing an example of a reinforcing bar used for a full PC floor board.
FIG. 6 is a front view in which a plurality of full PC floor boards arranged on the beam of the building frame of the first embodiment are cross-sectioned along a line in the short side direction thereof.
FIG. 7 is a front view in which a plurality of full PC floor boards arranged on the beam of the building frame of the first embodiment are cross-sectioned along a line in the long side direction thereof.
FIG. 8 is a plan view showing a method of fixing the long side portions of the full PC floor board of Example 1 to the steel beam and joining the long side portions to each other.
FIG. 9 is a front view of the structure shown in FIG. 8 taken along the line AA.
FIG. 10 is a front view of the structure shown in FIG. 8 taken along the line BB.
FIG. 11 is a plan view showing a method of joining the full PC floor boards in the vicinity of the intersection between the large beam and the small beam of the building frame of the plurality of full PC floor boards according to the first embodiment.
FIG. 12 is a plan view showing the relationship between the force and the like acting on the connecting portion of the full PC floor plate connected by the connecting method by the steel sleeve of Example 1 and the press-fitting of the wedge.
13 is a cross-sectional view of the steel sleeve, wedge, reinforcing bar, and the like of FIG.
FIG. 14 is a plan view of the main part of another type of full PC floor board according to the first embodiment.
FIG. 15 is a plan view showing other types of full PC floor boards of Example 1, how to join the long sides of the full PC floor boards, and the like.
FIG. 16 is a front view of the structure shown in FIG. 15 taken along the line CC.
FIG. 17 is a front view of the one shown in FIG. 15 taken along the line DD.
FIG. 18 is a plan view when linear reinforcing bars are arranged across the connecting portions of the reinforcing bars of the full PC floor board according to the first embodiment.
FIG. 19 is a plan view in the case where a ring-shaped reinforcing bar is arranged around each reinforcing bar connecting portion of the full PC floor board according to the first embodiment.
20 is a front view in which two full PC floor boards arranged on a full PC beam of the building frame of Example 2 are vertically cut along the line EE in FIG. 21. FIG.
21 is a plan view of a main part such as a joint portion of two full PC floor boards shown in FIG. 20;
FIG. 22 is a front view of the joint portion of two full PC floor boards arranged on the half PC beam of the building frame of Example 3 taken along the line FF of FIG.
FIG. 23 is a plan view of the main part of the joining portion of the two full PC floor boards shown in FIG.
FIG. 24 is a front view of a joint portion of two full PC floor boards in Embodiment 4 cut longitudinally along the line GG in FIG. 25.
FIG. 25 is a plan view of the main part of the joining portion of the two full PC floor boards shown in FIG. 24.
[Explanation of symbols]
1 Large beam
2 Small beams
3 Full PC beam
3a Main muscle
3b gluteal muscle
3c Reverse U-shaped rebar
3d upper surface
3d1  Recess
4 Half PC beam
4a Main muscle
4b gluteal muscle
10,20 Full PC floor board
10a bottom
10b Upper surface
10c end face
10c1  Lower half end face
10c2  Upper half end face
10c3  Step
10p top
10r Valley bottom
11 Lower rebar
11a Vertical rebar
11b Horizontal rebar
11a1, 11b1  Connection part
12 Upper rebar
12a Vertical rebar
12b Horizontal rebar
12a1, 12b1  Connection part
12c, 12d end reinforcing bars
13 U-shaped reinforcement
14 Straight reinforcing bars
15 Ring-shaped reinforcement
A Long side of full PC floor
B Short side of full PC floor
Sd Stud with head
Sp1~ Sp4  Space for placing
Sv sleeve
Wg wedge

Claims (6)

フルＰＣ床板として、フルＰＣ床板の形状を平面視で長辺部及び短辺部を備えた矩形状にし、フルＰＣ床板の長辺部及び短辺部の少なくとも一つの辺部を平面視で波形状のコッタとし、フルＰＣ床板中に埋め込まれた多数本の鉄筋の端部を波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出させて鉄筋の接続用部分として製作したものを使い、互いに隣接する一方のフルＰＣ床板の波形状のコッタの頂部が互いに隣接する他方のフルＰＣ床板の波形状のコッタ部の頂部に対面し、かつ前記一方のフルＰＣ床板の波形状のコッタの谷底部が前記他方のフルＰＣ床板の波形状の谷底部に対面するように、複数のフルＰＣ床板の前記辺部を建物躯体の鉄骨梁上に載置し、対面する各フルＰＣ床板の前記各辺部間にコンクリートの打設用空間を形成し、互いに隣接する一方の各フルＰＣ床板の波形状のコッタの各谷底部から突出する鉄筋の接続用部分と他方のフルＰＣ床板の波形状のコッタの各谷底部から突出する接続用部分とが接近して平行に位置するようにし、接近して平行にされた２本の鉄筋の接続用部分に一個の鋼製スリーブを嵌め、各鋼製スリーブの中央の孔にウェッジを圧入して２本の鉄筋の接続用部分を接続し、前記打設用空間内の鉄骨梁の上面に頭付きのスタッドの基部を溶接し、前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面の近傍の鉄筋の接続用部分の上側又は下側に、各鋼製スリーブを挟んで２本の直線状の補強鉄筋を、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面に沿って、フルＰＣ床板の前記辺部と平行に配筋し、或いは前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面から離れた鉄筋の接続用部分の上側又は下側に、各鋼製スリーブとの間に所定の距離をおいて各鋼製スリーブを取り囲むようにリング状の補強鉄筋をそれぞれ配筋して、前記打設用空間内にコンクリートを打設し、各フルＰＣ床板を鉄骨梁に固着するとともにフルＰＣ床板同士を固着することを特徴とするフルＰＣ床板の固着方法。 As a full PC floor board, the shape of the full PC floor board is made rectangular with a long side and a short side in plan view, and at least one side of the full PC floor board is waved in plan view. Reinforcing bar connecting parts by projecting the ends of a number of reinforcing bars embedded in a full PC floor board from each trough bottom of the corrugated cotter substantially perpendicular to the plane including each trough bottom. use those manufactured as to face the top of the wave-shaped cotter of the other full PC floorboard top portion adjacent the corrugated cotter adjacent one full PC floorboards to each other, and the one full PC floorboards The side portions of the plurality of full PC floor plates are placed on the steel beam of the building frame so that the bottom portion of the corrugated cotter of the other surface faces the corrugated bottom portion of the other full PC floor plate. Between each side of each full PC floorboard Forming a設用space, protruding from the trough bottom of the corrugated cotter adjacent one wave-shaped connecting portion and the other full PC floorboards rebar protruding from the valley bottom of the cotter of each full PC floorboards to each other The steel connecting parts are placed close to and parallel to each other, and one steel sleeve is fitted into the connecting parts of the two rebars that are paralleled close to each other, and a wedge is inserted into the central hole of each steel sleeve. the press-fitted to connect the connecting portions of the two reinforcing bars, the punching設用on the upper surface of the steel beams welded base of headed studs in the space, the connecting portion of the reinforcing bars of the respective steel sleeve Two linear reinforcing bars are sandwiched between the steel sleeves on the upper side or the lower side of the reinforcing bar connection parts in the vicinity of both end faces in the longitudinal direction of the steel sleeves. Along the both end faces in the longitudinal direction, parallel to the side of the full PC floorboard A predetermined distance between each steel sleeve on the upper side or the lower side of the connecting portion of the reinforcing bar, which is separated from both longitudinal end faces of the connecting portion of the reinforcing bar of each steel sleeve. In this case, reinforcing reinforcing bars in the form of rings are placed so as to surround each steel sleeve, concrete is placed in the placement space, and each full PC floor board is fixed to a steel beam and the full PC floor boards are connected to each other. A method for fixing a full PC floor board, wherein フルＰＣ床板として、フルＰＣ床板の形状を平面視で長辺部及び短辺部のある矩形状にし、その長辺部及び短辺部の少なくとも一つの辺部を平面視が波形状のコッタとし、フルＰＣ床板中に埋め込まれた多数本の鉄筋の端部を波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出させて鉄筋の接続用部分として製作したものを使い、フルＰＣＲＣ梁又はフルＰＣＳＲＣ梁として、梁主筋、肋筋及び連結用鉄筋又は梁主筋、肋筋、梁鉄骨及び連結用鉄筋をコンクリート中に埋設し、前記コンクリートの部分の上面の梁の長手方向に間隔をおいた多数の箇所に前記連結用鉄筋の一部を露出させ、連結用鉄筋の露出させてある部分をフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁上にフルＰＣ床板が載置された際のフルＰＣ床板の鉄筋の接続用部分よりも下方にあるようにし、かつ前記上面に多数の凹部又は粗面部を設けて製作したものを使い、互いに隣接する一方のフルＰＣ床板の波形状のコッタの頂部が互いに隣接する他方のフルＰＣ床板の波形状のコッタの頂部に対面し、かつ前記一方のフルＰＣ床板の波形状のコッタの谷底部が前記他方のフルＰＣ床板の波形状の谷底部に対面するように、複数のフルＰＣ床板の前記辺部を建物躯体のフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁上に載置し、対面する各フルＰＣ床板の前記辺部間にコンクリートの打設用空間を形成し、隣接する一方のフルＰＣ床板の波形状のコッタの谷底部から突出する鉄筋の接続用部分と他方のフルＰＣ床板の波形状のコッタの谷底部から突出する鉄筋の接続用部分とが接近して互いに平行になるようにし、接近して平行にされた２本の鉄筋の接続用部分に一個の鋼製スリーブを嵌め、鋼製スリーブの中央の孔にウェッジを圧入して２本の鉄筋の接続用部分を接続し、前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面の近傍の鉄筋の接続用部分の上側又は下側に、各鋼製スリーブを挟んで２本の直線状の補強鉄筋を、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面に沿って、フルＰＣ床板の前記辺部と平行に配筋し、或いは前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面から離れた鉄筋の接続用部分の上側又は下側に、各鋼製スリーブとの間に所定の距離をおいて各鋼製スリーブを取り囲むようにリング状の補強鉄筋をそれぞれ配筋して、前記打設空間内にコンクリートを打設し、各フルＰＣ床板をフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁に固着するとともにフルＰＣ床板同士を固着することを特徴とするフルＰＣ床板の固着方法。As a full PC floor board, the shape of the full PC floor board is a rectangular shape having a long side portion and a short side portion in a plan view, and at least one side portion of the long side portion and the short side portion is a cotter having a wave shape in a plan view. The end of a number of rebars embedded in a full PC floor panel is produced as a connecting part for reinforcing bars by projecting from the bottom of each corrugated cotter at a substantially right angle to the surface including each bottom. As a full PCRC beam or a full PCSRC beam, the beam main bar, reinforcing bar and connecting reinforcing bar or beam main bar, reinforcing bar, beam steel frame and connecting reinforcing bar are embedded in the concrete, and the beam on the upper surface of the concrete part is embedded. When a part of the connecting reinforcing bar is exposed at a number of locations spaced in the longitudinal direction, and the exposed part of the connecting reinforcing bar is placed on the full PCRC beam or the full PCSRC beam Full PC floor panel rebar connection As is located below the use portion, and to use those produced by providing a large number of recesses or rough surface on the upper surface, the other in which the top portion of the wave-shaped cotter of the adjacent one of the full PC floorboards with each other adjacent to each other A plurality of corrugated cotters on one full PC floor slab facing the top of the corrugated cotter on the full PC floor slab, and a plurality of corrugated valleys on the other full PC slab facing the corrugated valley bottom. The side of the full PC flooring is placed on the full PCRC beam or full PCSRC beam of the building frame, and a concrete placement space is formed between the sides of each full PC flooring that faces each other. The connecting portion of the reinforcing bar protruding from the bottom of the corrugated cotter of the full PC floor board and the connecting portion of the reinforcing bar protruding from the bottom of the corrugated cotter of the other full PC floor board are close to each other and parallel to each other. Like Fitted with a single steel sleeve connecting part of the two reinforcing bars, which are in parallel close, by press-fitting the wedge in the center of the hole of the steel sleeve to connect the connecting portions of the two reinforcing bars, the Two linear reinforcing bars are sandwiched between the steel sleeves on the upper side or the lower side of the connecting parts of the reinforcing bars in the vicinity of both end faces in the longitudinal direction of the connecting parts of the reinforcing bars of each steel sleeve, Reinforcing bars parallel to the sides of the full PC floor plate along both longitudinal end faces of the steel sleeve rebar connecting portions, or the lengths of the rebar connecting portions of the steel sleeves Ring-shaped reinforcing bars are placed above or below the connecting part of the reinforcing bars away from both end faces in the direction so as to surround each steel sleeve with a predetermined distance between each steel sleeve. The concrete is placed in the placement space, and each full PC floor board Is fixed to a full PCRC beam or a full PCSRC beam, and the full PC floor plates are fixed to each other. フルＰＣ床板として、フルＰＣ床板の形状を平面視で長辺部及び短辺部のある矩形状にし、フルＰＣ床板中に埋め込まれた多数本の鉄筋の端よりの部分を上記長辺部及び短辺部の少なくとも一つの辺部の端面から該端面に対して略直角に突出させて鉄筋の接続用部分として製作したものを使い、ハーフＰＣＲＣ梁又はハーフＰＣＳＲＣ梁として、梁主筋及び肋筋又は梁主筋、肋筋及び梁鉄骨をコンクリート中に埋設し、前記コンクリートの部分の上面から前記梁主筋及び肋筋梁の上側の部分を露出させ、前記梁主筋及び肋筋梁の露出させてある部分をフルＰＣＲＣ梁又はフルＰＣＳＲＣ梁上にフルＰＣ床板が載置された際のフルＰＣ床板の鉄筋の接続用部分よりも下方にあるようにし、前記上面に粗面部を形成して製作したものを使い、互いに隣接する一方のフルＰＣ床板の辺部と他方のフルＰＣ床板の辺部とが前記梁主筋及び肋筋梁の露出部を挟んで対面するように、複数のフルＰＣ床板の前記辺部を建物躯体のハーフＰＣＲＣ梁又はハーフＰＣＳＲＣ梁上に載置して、対面する各フルＰＣ床板の各辺部間にコンクリートの打設用空間を形成し、互いに隣接する一方のフルＰＣ床板の辺部の端面から突出する鉄筋の接続用部分と、他方のフルＰＣ床板の辺部の端面から突出する鉄筋の接続用部分とが接近して互いに平行になるようにし、接近して平行にされた２本の鉄筋の接続用部分に一個の鋼製スリーブを嵌め、鋼製スリーブの中央の孔にウェッジを圧入して２本の鉄筋の接合用部分を接続して、前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面の近傍の鉄筋の接続用部分の上側又は下側に、各鋼製スリーブを挟んで２本の直線状の補強鉄筋を、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面に沿って、フルＰＣ床板の前記辺部と平行に配筋し、或いは前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面から離れた鉄筋の接続用部分の上側又は下側に、各鋼製スリーブとの間に所定の距離をおいて各鋼製スリーブを取り囲むようにリング状の補強鉄筋をそれぞれ配筋して、打設空間内にコンクリートを打設し、各フルＰＣ床板をハーフＰＣＲＣ梁又はハーフＰＣＳＲＣ梁に固着するとともにフルＰＣ床板同士を固着することを特徴とするフルＰＣ床板の固着方法。 As a full PC floor board, the shape of the full PC floor board is made into a rectangular shape having a long side part and a short side part in a plan view, and the portions from the ends of a plurality of reinforcing bars embedded in the full PC floor board are the long side part and is projected substantially at a right angle with respect to the end face from the end face of at least one side portion of the short side to use those produced by the connecting portion of the reinforcing bar, as a half-PCRC beam or half PCSRC beam, the beam main reinforcement and costal A bar or beam main bar, reinforcing bar and beam steel frame are embedded in the concrete, the beam main bar and the upper part of the bar beam are exposed from the upper surface of the concrete part, and the beam main bar and the bar beam are exposed. A certain portion was made to be below the connecting portion of the reinforcing bar of the full PC floor board when the full PC floor board was placed on the full PCRC beam or the full PCSRC beam, and the rough surface portion was formed on the upper surface . use things, each other As the side portions of the side portion and the other full PC floor adjacent one full PC floorboards facing across the exposed portion of the beam main reinforcement and stirrups beams, building the side portion of the plurality of full PC floorboards Placed on the half-PCRC beam or half-PCSRC beam of the frame, a space for placing concrete is formed between the sides of each facing full PC floor board, and the sides of one full PC floor board adjacent to each other are formed. a connecting portion of the reinforcing bars protruding from the end surface, two in which the connecting portion of the reinforcing bars protruding from the end surface of the side portion of the other full PC floorboard to be parallel to each other in close proximity, which is in parallel close One steel sleeve is fitted into the connecting part of the steel bar, a wedge is press-fitted into the hole in the center of the steel sleeve, and the connecting part of the two steel bars is connected . Rebar near both end faces in the longitudinal direction of the connecting part Two straight reinforcing bars with the steel sleeves sandwiched between the upper and lower sides of the connecting portion, and full PC along both longitudinal end faces of the connecting portions of the reinforcing portions of each steel sleeve Arranged in parallel with the side of the floor plate, or made of each steel on the upper or lower side of the connecting part of the reinforcing bar away from both longitudinal end faces of the connecting part of the reinforcing bar of each steel sleeve Ring-shaped reinforcing bars are placed so as to surround each steel sleeve with a predetermined distance from the sleeve , concrete is placed in the placement space, and each full PC floor board is half-PCRC beam Alternatively, the full PC floor board fixing method, wherein the full PC floor boards are fixed to the half PCSRC beam and the full PC floor boards are fixed to each other. フルＰＣ床板として、フルＰＣ床板の形状を平面視で長辺部及び短辺部を備えた矩形状にし、その長辺部及び短辺部の少なくとも一つの辺部を平面視で波形状のコッタとし、フルＰＣ床板中に埋め込まれた多数本の鉄筋の端よりの部分を波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出させて鉄筋の接続用部分として製作したものを使い、対のフルＰＣ床板の波形状のコッタのある辺部を互いに対面させて配置して、フルＰＣ床板の辺部間にコンクリートの打設用空間を形成し、一方のフルＰＣ床板のコッタの波形状の頂部が他方のフルＰＣ床板のコッタの波形状の頂部に対面し、かつ一方のフルＰＣ床板のコッタの波形状の谷底部が他方のフルＰＣ床板の波形状の谷底部に対面するようにし、一方のフルＰＣ床板の波形状のコッタの各谷底部から突出する鉄筋の接続用部分と他方のフルＰＣ床板の波形状のコッタの各谷底部から突出する鉄筋の接続用部分とが接近して互いに平行になるようにし、接近して平行にされた２本の鉄筋の接続用部分に一個の鋼製スリーブを嵌め、鋼製スリーブの中央の孔にウェッジを圧入して２本の鉄筋の接続用部分を接続し、前記打設用空間の下側に型枠板を配置して、前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面の近傍の鉄筋の接続用部分の上側又は下側に、各鋼製スリーブを挟んで２本の直線状の補強鉄筋を、各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面に沿って、フルＰＣ床板の前記辺部と平行に配筋し、或いは前記の各鋼製スリーブの鉄筋の接続用部分の長手方向の両方の端面から離れた鉄筋の接続用部分の上側又は下側に、各鋼製スリーブとの間に所定の距離をおいて各鋼製スリーブを取り囲むようにリング状の補強鉄筋をそれぞれ配筋して、前記打設空間内にコンクリートを打設し、フルＰＣ床板同士を固着して一体化することを特徴とするフルＰＣ床板の固着方法。As a full PC floor board, the shape of the full PC floor board is a rectangular shape having a long side portion and a short side portion in a plan view, and at least one side portion of the long side portion and the short side portion is a corrugated cotter in a plan view. As a part for connecting reinforcing bars, the parts from the ends of a large number of reinforcing bars embedded in the full PC floor board are projected from each valley bottom of the corrugated cotter substantially perpendicular to the plane including each valley bottom. Using the manufactured one, the sides of the corrugated cotters of the pair of full PC floorboards are placed facing each other to form a concrete placement space between the sides of the full PC floorboard, The corrugated top of the PC floorboard cotter faces the corrugated top of the other full PC floorboard cotter, and the corrugated valley bottom of one full PC floorboard is the corrugated top of the other full PC floorboard. so as to face the valley portion, the wave of one full PC floorboards Close Jo of the connecting portion of the reinforcing bars protruding from the valley bottom of the wave-shaped cotter of the connecting portion and the other of the full PC floorboards rebar protruding from the valley bottom of the cotter is set to be parallel to each other, fitted with a single steel sleeve connecting part of the two reinforcing bars, which are in parallel close, by press-fitting the wedge in the center of the hole of the steel sleeve to connect the connecting portions of the two reinforcing bars, the By placing a form plate under the placement space, on the upper side or lower side of the connecting portion of the reinforcing bar in the vicinity of both end faces in the longitudinal direction of the connecting portion of the reinforcing bar of each steel sleeve, Two straight reinforcing bars across each steel sleeve are placed in parallel with the side of the full PC floor plate along both longitudinal end faces of the connecting portion of each steel sleeve. Or both end faces in the longitudinal direction of the connecting portion of the reinforcing bar of each steel sleeve Apart the upper or lower side of the connecting portion of the reinforcing bars, and Haisuji each annular reinforcing rebar to surround the respective steel sleeves with a predetermined distance between each steel sleeve, the punching A method for fixing a full PC floor board, comprising placing concrete in the installation space and fixing the full PC floor boards together. フルＰＣ床板として、フルＰＣ床板の形状が平面視で長辺部及び短辺部のある矩形状とされ、その長辺部及び短辺部の少なくとも一つの辺部が平面視で波形状のコッタとされ、フルＰＣ床板中に下側の鉄筋及び上側の鉄筋が埋め込まれ、下側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋が長辺部と平行に間隔をおい て配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋を構成する格子状鉄筋の横鉄筋又は縦鉄筋の端よりの部分が波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出して鉄筋の接続用部分とされてあり、下側の鉄筋を構成する格子状鉄筋の横鉄筋又は縦鉄筋の端が波形状のコッタの各頂部に位置しており、多数のＵ型補強鉄筋が前記辺部の近傍の波形状のコッタの頂部に相対する下側の鉄筋の延在域と上側の鉄筋の延在域とにまたがって配され、各Ｕ型補強鉄筋のＵ型の二つの辺部分を含む面をフルＰＣ床板の上側又は下側の面に対して直角になるように配置され、各Ｕ型補強鉄筋のＵ型の一方の辺部分が下側の鉄筋の延在域に接して前記辺部と交差する方向に向けられ、各Ｕ型補強鉄筋のＵ型の他方の辺部分が上側の鉄筋の延在域に接して前記辺部と交差する方向に向けられているフルＰＣ床板を使うことを特徴とする請求項１、２及び４のいずれか一つの項記載のフルＰＣ床板の固着方法。As a full PC floor board, the shape of the full PC floor board is a rectangular shape having a long side portion and a short side portion in a plan view, and at least one side portion of the long side portion and the short side portion is a corrugated cotter in a plan view. The lower and upper reinforcing bars are embedded in the full PC floor board, and the lower reinforcing bars are arranged at a right angle to the vertical reinforcing bars and the vertical reinforcing bars arranged in parallel with the long sides. In addition, it is composed of a grid-like reinforcing bar composed of transverse reinforcing bars arranged at intervals, and the upper reinforcing bars are arranged at a right angle with respect to the vertical reinforcing bars and the vertical reinforcing bars arranged at intervals in parallel to the long side part and It is composed of grid reinforcing bars composed of horizontal reinforcing bars arranged at intervals, and the part from the end of the horizontal reinforcing bars or vertical reinforcing bars of the grid reinforcing bars constituting the upper reinforcing bars is from each valley bottom of the corrugated cotter. It protrudes at a substantially right angle to the surface including the bottom of the valley and is used as a connecting part for reinforcing bars. Horizontal reinforcing bars or longitudinal ends of reinforcing bars of the grid-shaped reinforcing bar which formed is located at the apexes of the corrugated cotter, a number of U-shaped reinforcing rebar opposite under the top of the wave-shaped cotter of the vicinity of the side portion The surface including the two U-shaped side portions of each U-type reinforcing steel bar is arranged on the upper or lower surface of the full PC floor board. It is at right angles against, directed in a direction crossing the side portions one side portion of the U-type of each U-shaped reinforcing rebar is in contact with the extended range of the lower reinforcing bar, the U-shaped reinforcement U type other side portion of the reinforcing bar is in contact with the extending range of the upper reinforcing bar according to claim 1, 2 and 4, characterized in that use full PC floorboards being directed in a direction intersecting the side portions The fixing method of the full PC floor board as described in any one item | term. フルＰＣ床板として、フルＰＣ床板の形状が平面視で長辺部及び短辺部のある矩形状とされ、その長辺部及び短辺部の少なくとも一つの辺部が平面視で波形状のコッタとされ、フルＰＣ床板中に下側の鉄筋及び上側の鉄筋が埋め込まれ、下側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋が長辺部と平行に間隔をおいて配された縦鉄筋と該縦鉄筋に対して略直角にかつ間隔をおいて配された横鉄筋とからなる格子状鉄筋で構成され、上側の鉄筋を構成する格子状鉄筋の横鉄筋又は縦鉄筋の端よりの部分が波形状のコッタの各谷底部から各谷底部を含む面に対して略直角に突出して鉄筋の接続用部分とされてあり、フルＰＣ床板の鉄筋の接続用部分が波形状のコッタの谷底部から突出させてある辺部にあっては、フルＰＣ床板の下半分の波形状のコッタの端面とフルＰＣ床板の上半分の波形状のコッタの端面との間に略水平な段部があり、フルＰＣ床板の下半分の波形状のコッタの端面が前記段部の分だけフルＰＣ床板の上半分の波形状のコッタの端面から突出させてあり、前記鉄筋の接続用部分が上半分の波形状のコッタの谷底部から突出しているフルＰＣ床板を使うことを特徴とする請求項１に記載のフルＰＣ床板の固着方法。As a full PC floor board, the shape of the full PC floor board is a rectangular shape having a long side portion and a short side portion in a plan view, and at least one side portion of the long side portion and the short side portion is a corrugated cotter in a plan view. The lower and upper reinforcing bars are embedded in the full PC floor board, and the lower reinforcing bars are arranged at a right angle to the vertical reinforcing bars and the vertical reinforcing bars arranged in parallel with the long sides. In addition, it is composed of a grid-like reinforcing bar composed of transverse reinforcing bars arranged at intervals, and the upper reinforcing bars are arranged at a right angle with respect to the vertical reinforcing bars and the vertical reinforcing bars arranged at intervals in parallel to the long side part and It is composed of grid reinforcing bars composed of horizontal reinforcing bars arranged at intervals, and the part from the end of the horizontal reinforcing bars or vertical reinforcing bars of the grid reinforcing bars constituting the upper reinforcing bars is from each valley bottom of the corrugated cotter. protrude substantially at right angles to the plane including the valley portion Yes is the connecting portion of the reinforcing bar, full PC floorboards In the side portion connecting portion of the reinforcing bars are protruded from the root portion of the waveform-shaped cotter, the cotter on the half wave-shaped end face and the full PC floorboards cotter corrugated lower half of the full PC floorboards substantially it has horizontal step portion, protruded from the end face of the cotter on the half wave-shaped minute only full PC floor of the end face of the wave-shaped cotter of the lower half of the full PC floorboards the stepped portion between the end face of There Te, method of fixing full PC floorboard according to claim 1, characterized in that use full PC floorboard connection portion of the rebar is projected from the valley bottom of the wave-shaped cotter of the upper half.
JP2000403020A 2000-11-24 2000-11-24 Full PC floor board fixing method Expired - Fee Related JP3694875B2 (en)

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