JP3837390B2

JP3837390B2 - Precast concrete column beam joint structure, frame structure including this joint structure, and precast concrete column beam joint method

Info

Publication number: JP3837390B2
Application number: JP2003075125A
Authority: JP
Inventors: 浩一杉本; 安彦増田; 直人藤生
Original assignee: Obayashi Corp; Sumitomo Mitsui Construction Co Ltd
Current assignee: Obayashi Corp; Sumitomo Mitsui Construction Co Ltd
Priority date: 2003-03-19
Filing date: 2003-03-19
Publication date: 2006-10-25
Anticipated expiration: 2023-03-19
Also published as: JP2004278257A

Description

【０００１】
【発明の属する技術分野】
本発明は、プレキャストコンクリート（ＰＣ）柱梁の接合構造およびこの接合構造を含んだ架構構造に関する。
【０００２】
【従来の技術】
従来より、コンクリート柱梁の接合構造として、図２４に示す構成が一般的である。同図に示す従来の柱梁の接合構造では、ＰＣ梁１００の端面から梁主筋１０２（同図の例では下端筋）を突出させる。そして、同じ直線上で隣り合う２本のＰＣ梁１００を、それらの端部が柱コンクリート１０４の上で相対向するように設置し、床コンクリートと共に柱梁仕口部にコンクリートを打設することにより各端面から突出する梁主筋１０２を連結する。なお、図２４では、下端筋のみをＰＣ梁１００の端面から突出させ、上端筋はＰＣ梁１００から露出させた構成を示しているが、上下両方の梁端筋をＰＣ梁１００に埋入して端面から突出させる場合もある。また、図２４では下端筋を折り曲げることで現場打設コンクリートとの定着を確保するようにしているが、これに限らず、梁主筋同士を機械式継手で連結してもよい。
【０００３】
また、特許文献１には、柱梁の接合部をＰＣ部材で構成した構造が開示されている。この特許文献１に開示される構造では、図２５に示すようなＰＣ部材２００を介して柱梁を接合する。このＰＣ部材２００は、直方体状の本体２０２と、この本体２０２を鉛直方向および垂直方向に貫通する複数の貫通孔２０４ａ，２０４ｂとから構成される。かかるＰＣ部材２００の水平方向の貫通孔２０４ｂに梁筋を挿通させてグラウトを注入することで、ＰＣ部材２００に梁筋を一体化させる。このＰＣ部材２００を柱梁仕口部まで揚重し、柱頭部から突出した柱筋を鉛直方向の貫通孔２０４ａに挿通させてグラウトを注入することで柱梁を接合する。
【０００４】
【特許文献１】
特開平２−１０１２３７号公報
【０００５】
【発明が解決しようとする課題】
上記のように、図２４に示す従来の構成では、現場にて柱梁仕口部にコンクリートを打設することが必要である。また、特許文献１に開示される構成においても、梁のコンクリートは現場で打設することになる。しかし、現場でコンクリートを打設するには、型枠の設置・解体作業が必要となるなど工程数が増大し、コスト増や工期の長期化を招いてしまう。
【０００６】
また、特許文献１に開示される構成を基にして、図２６に示すように、直方体状の仕口部３００Ａと梁部３００ＢとをＰＣ部材３００として一体化することも考えられる。この構成では、梁部３００Ｂの端面から梁主筋３０２を突出させ、梁スパンの中央部（図２６中のＸ部）において相対向する梁部３００Ｂの端面から突出した梁主筋３０２どうしを、このＸ部に床コンクリートと共にコンクリートを打設することにより連結する。したがって、図２６に示す構成でも、梁主筋どうしの連結部分にコンクリートを打設しなければならず、やはり型枠工事が必要になってしまう。
【０００７】
本発明は上記の点に鑑みてなされたものであり、現場でのコンクリート打設が不要なＰＣ柱梁の接合構造およびこの接合構造を含んだ架構構造を提供することを目的とする。
【０００８】
【課題を解決するための手段】
上記の目的を達成するため、本発明は、端面から梁主筋の端部が水平方向に突出したプレキャストコンクリート（ＰＣ）梁と、柱主筋が埋入され、該柱主筋の少なくとも上端部に柱主筋連結用の継手が埋入されたＰＣ柱と、柱主筋を挿通させるための鉛直方向の貫通孔を有すると共に、梁主筋連結用の継手が埋入された直方体状のＰＣ仕口パネル部材とにより構成され、
前記ＰＣ仕口パネル部材を水平方向に移動させることにより、前記ＰＣ梁の梁主筋が、前記ＰＣ仕口パネル部材に埋入された梁主筋連結用の継手に挿入されて定着され、
上階の前記ＰＣ柱の柱主筋またはこの柱主筋に連結されるべき中継筋が、前記仕口パネル部材の前記貫通孔に上方から挿入されて前記ＰＣ仕口パネル部材を貫通し、下階の前記ＰＣ柱の柱主筋の上端部に埋入された前記継手に定着され、
前記ＰＣ梁の長さは架構のスパン全長となるように構成されていることを特徴とする。
【０００９】
本発明によれば、ＰＣ梁とＰＣ仕口パネル部材とは、梁主筋がＰＣ仕口パネル部材に埋入された継手に定着されることにより接合され、ＰＣ仕口パネル部材とＰＣ柱とは、ＰＣ仕口パネル部材を貫通して上下の柱主筋が定着されることにより接合される。また、上階側の柱主筋またはこれに連結されるべき中継筋は、ＰＣ仕口パネル部材の貫通孔へ上方から挿入されるので、ＰＣ梁から突出した梁主筋がＰＣ仕口パネル部材の継手に差し込まれるようにＰＣ仕口パネル部材を横に移動させ、しかる後に、上方から柱主筋または中継筋を挿入することで、接合部の施工を円滑に行える。したがって、本発明によれば、現場でのコンクリート打設を行うことなく、ＰＣ柱とＰＣ梁とを接合できる。
【００１０】
また、本発明は、端面から梁主筋の端部が水平方向に突出するＰＣ梁と、柱主筋を挿通させるための鉛直方向の貫通孔を有すると共に、梁主筋連結用の継手が埋入された直方体状のＰＣ仕口パネル部材とが一体化されてなるＰＣ部材と、
柱主筋が埋入され、該柱主筋の少なくとも上端部に柱主筋連結用の継手が埋入されたＰＣ柱とにより構成され、
前記ＰＣ部材を水平方向に移動させることにより、当該ＰＣ部材に隣接するＰＣ部材のＰＣ梁の端部から突出した梁主筋が、当該ＰＣ部材の前記仕口パネル部材に埋入された梁主筋連結用の継手に挿入されて定着され、
上階の前記ＰＣ柱の柱主筋またはこの柱主筋に連結されるべき中継筋が、前記ＰＣ仕口パネル部材の前記貫通孔に上方から挿入されて前記ＰＣ仕口パネル部材を貫通し、前記ＰＣ柱の柱主筋の上端部に埋入された前記継手に定着され、
前記ＰＣ梁の長さは架構のスパン全長となるように構成されていることを特徴とすることを特徴とする。
【００１１】
また、本発明は、柱主筋を挿通させるための鉛直方向の貫通孔を有する直方体状のＰＣ仕口パネル部材と、前記ＰＣ仕口パネル部材から水平方向両側に延び、端面から梁主筋の端部が水平方向に突出する第１および第２のＰＣ梁とが一体化されてなるＰＣ部材と、
柱主筋が埋入され、該柱主筋の少なくとも上端部に柱主筋連結用の継手が埋入されたＰＣ柱とにより構成され、
上階の前記ＰＣ柱の柱主筋またはこの柱主筋に連結されるべき中継筋が、前記ＰＣ仕口パネル部材の前記貫通孔に上方から挿入されて前記ＰＣ仕口パネル部材を貫通し、前記ＰＣ柱の柱主筋の上端部に埋入された前記継手に定着され、
前記ＰＣ部材を水平方向に移動させることにより、前記第１及び第２のＰＣ梁の何れか一方の端面から突出した梁主筋が、当該一方のＰＣ梁に隣接するＰＣ仕口パネル部材に埋入された梁主筋連結用の継手に挿入されて定着され、
前記第１及び第２のＰＣ梁の長さは夫々架構のスパン全長となるように構成されていることを特徴とすることを特徴とする。
【００１２】
また、本発明は、柱主筋を挿通させるための鉛直方向の貫通孔を有する直方体状の複数のＰＣ仕口パネル部材と、これら複数のＰＣ仕口パネル部材の間を接続するＰＣ梁とが一体化されてなるＰＣ部材と、
柱主筋が埋入され、該柱主筋の少なくとも上端部に柱主筋連結用の継手が埋入されたＰＣ柱とにより構成され、
梁主筋は前記ＰＣ部材を水平方向に貫通して延び、その両端部が前記ＰＣ部材の両端に位置する前記ＰＣ仕口パネル部材に埋入された梁主筋接続用の継手に定着され、
上階の前記ＰＣ柱の柱主筋またはこの柱主筋に連結されるべき中継筋が、前記ＰＣ仕口パネル部材の前記貫通孔に上方から挿入されて前記ＰＣ仕口パネル部材を貫通し、前記ＰＣ柱の柱主筋の上端部に埋入された前記継手に定着され、
前記ＰＣ部材を水平方向に移動させることにより、前記両端に位置するＰＣ仕口パネル部材の一方の前記梁主筋接続用の継手に、このＰＣ仕口パネル部材に接合されるべきＰＣ梁の端面から突出する梁主筋が挿入されて定着され、
前記一方のＰＣ仕口パネル部材に接合されるべきＰＣ梁の長さは架構のスパン全長となるように構成されていることを特徴とする
【００１３】
また、本発明は、柱主筋を挿通させるための鉛直方向の貫通孔を有する直方体状のＰＣ仕口パネル部材と、前記ＰＣ仕口パネル部材から水平方向両側に延びる第１および第２のＰＣ梁とが一体化されたＰＣ部材と、
柱主筋が埋入されて、該柱主筋の少なくとも上端部に柱主筋連結用の継手が埋入されたＰＣ柱とにより構成され、
梁主筋は、前記ＰＣ部材を水平方向に貫通して延び、前記第１のＰＣ梁側の端部は、当該第１のＰＣ梁の端面から突出していると共に、前記第２のＰＣ梁側の端部には梁主筋接続用の継手が当該第２のＰＣ梁に埋入されており、
前記ＰＣ部材を水平方向に移動させることにより、前記ＰＣ部材の前記第１のＰＣ梁から突出した梁主筋の端部が、当該ＰＣ部材に隣接するＰＣ部材の前記第２のＰＣ梁に埋入された継手に挿入されて定着され、
上階の前記ＰＣ柱の柱主筋またはこの柱主筋に連結されるべき中継筋が、前記ＰＣ仕口パネル部材の前記貫通孔に上方から挿入されて前記ＰＣ仕口パネル部材を貫通し、前記ＰＣ柱の柱主筋の上端部に埋入された前記継手に定着され、
前記第１および第２の梁部は、それらの長さの和が架構のスパン全長となるように構成されていることを特徴とする。
【００１４】
【発明の実施の形態】
図１は、本発明の第１の実施形態である柱梁接合構造１０の構成を示す斜視図である。また、図２は、図１に示す柱梁接合構造１０の鉛直断面図である。図１および図２に示すように、柱梁接合構造１０は、ＰＣ梁１とＰＣ柱４とを、ＰＣ柱４の頭部に配置される仕口パネル部材３において接合するものである。なお、図１および図２では、ＰＣ梁１、ＰＣ柱４、仕口パネル部材３、および中継筋４ａが分解された状態を示しており、各部材を図中矢印で示す向きに設置することで柱梁接合構造１０が完成する。
【００１５】
ＰＣ梁１は架構のスパン長に亘る長さを有しており、その両端部が、仕口パネル部材３を介してＰＣ柱４に接合される。ただし、架構のスパン長が長い場合には、ＰＣ梁を複数（例えば２〜３個）に分割し、それらを接合してＰＣ梁１として用いてもよい。仕口パネル部材３は、直方体状に構成されたＰＣ部材であり、鉛直方向に貫通する複数の柱主筋孔３ａと、水平方向に貫通する複数の梁主筋孔３ｂとを含んでいる。
【００１６】
ＰＣ梁１の梁主筋１ａのうち下端筋は梁コンクリートに埋入されてその端部が梁端面から突出し、上端筋は梁コンクリートから完全に露出している。仕口パネル部材３の両側に配置されるＰＣ梁１の梁主筋１ａが、仕口パネル部材３の梁主筋孔３ｂに両側から挿入され、梁主筋孔３ｂ内に埋入された継手によって相互に連結される。なお、梁主筋孔３ｂ内の継手の構造については後述する。
【００１７】
仕口パネル部材３の柱主筋孔３ａには上方から中継筋４ａが挿入される。中継筋４ａは、下階のＰＣ梁４の柱主筋４ｂと、上階のＰＣ柱４の柱主筋４ｂとを中継するための鉄筋である。ＰＣ柱４の柱主筋４ｂの上端部には柱主筋用継手４ｃが埋入されており、中継筋４ａの下端部がこの柱主筋用継手４ｃに定着されることにより下階の柱主筋４ｂに連結される。また、柱主筋４ｂの下端部にも柱主筋用継手４ｄが埋入されており、この柱主筋用継手４ｄに中継筋４ａの上端部が定着される。すなわち、図１および図２において、不図示の上階のＰＣ柱４を施工する場合には、その下端部の柱主筋用継手４ｄに中継筋４ａの上端が定着されることになる。このように、本実施形態では、ＰＣ柱４の柱主筋４ｂの上下両端に夫々柱主筋用継手４ｃ、４ｄを埋入し、下階のＰＣ柱４の上端側の柱主筋用継手４ｃと、上階のＰＣ柱４の下端側の柱主筋用継手４ｄとの間に、仕口パネル部材３を貫通する中継筋４ａを連結する構成としている。
【００１８】
柱梁接合構造１０を施工する場合、先ず、架構の端部に位置するＰＣ柱４−１の上部に仕口パネル部材３を設置し、その柱主筋孔３ａへ上方から中継筋４ａを挿入すると共に、梁主筋孔３ｂに、この仕口パネル部材３に接合すべきＰＣ梁１の一端から突出する梁主筋１ａを挿入する。次に、ＰＣ柱４−１に隣接するＰＣ柱４−２上に、次の仕口パネル部材３を、その梁主筋孔３ｂに上記ＰＣ梁１の他端から突出する梁主筋１ａが挿入されるように横向きに移動させながら設置する。そして、仕口パネル部材３の柱主筋孔３ａに上方から中継筋４ａを挿入すると共に、梁主筋孔３ｂに、当該仕口パネル部材３に接合すべき次のＰＣ梁１の一端から突出する梁主筋１ａを挿入する。このような作業を繰り返して柱梁を接合していくことにより架構を構築する。
【００１９】
図３は、梁主筋孔３ｂに設けられた梁主筋の継手構造を詳細に示す。同図に示すように、梁主筋孔３ｂには鞘管１１が設けられており、梁主筋１ａの先端が梁主筋孔３ｂの両側から鞘管１１の内部に達するまで挿入される。仕口パネル部材３には、その外表面と梁主筋孔３ｂとを接続するグラウト注入孔３ｃが設けられており、このグラウト注入孔３ｃからグラウト材が注入されることで、梁主筋１ａが鞘管１１に定着される。また、鞘管１１の外周面にはほぼ全長に亘って凹凸部１１ａが設けられており、この凹凸部１１ａにより鞘管１１と仕口パネル部材３のコンクリートとの付着力が高められている。したがって、梁主筋１ａに大きな張力が生じた場合にも、鞘管１１を梁主筋孔３ｂ内にしっかりと保持することができる。
【００２０】
なお、鞘管１１の外周面に設ける凹凸の構成は図３に示すものに限らず、例えば、図４に示すように、鞘管１１の両端部に節１１ｂを設けてもよく、また、図５に示すように、鞘管１１の中央部に節１１ｃを設けてもよい。あるいは、上記図３のような凹凸部１１ａを設けると共に、両端部の節１１ｂあるいは中央部の節１１ｃを設けることとしてもよい。
なお、図３〜図５において、鞘管１１が仕口パネル部材３の全幅に亘る長さを有する構成としてもよい。
【００２１】
図６は、上記第１の実施形態の変形例を示す図である。同図に示す構成では、柱主筋４ｅをＰＣ柱４の下端面から突出させている。また、柱主筋４ｅの上端部には上記実施形態と同様に、柱主筋用継手４ｃを埋入している。そして、上階のＰＣ柱４の柱主筋４ｅの上記突出部分を仕口パネル部材３の柱主筋孔３ａに上方から挿入し、仕口パネル部材３を貫通させて、下階のＰＣ柱４の柱主筋用継手４ｃに連結している。
【００２２】
図７および図８は、夫々、上記図２および図６に示す構成に対応した変形例を示す。図２およびその変形例である図６の構成では、ＰＣ梁１の下端筋のみが梁コンクリートに埋入されて端面から突出し、上端筋は梁コンクリートから完全に露出しているものとした。これに対して、図７および図８に示す構成では、下端筋および上端筋の両方が梁コンクリートに埋入されて端面から突出するようにしている。
【００２３】
なお、図２および図６〜図８に示す各構成において、仕口パネル部材３の柱主筋孔３ａへ中継筋４ａまたは柱主筋４ｅを挿入した後、グラウト材により中継筋４ａまたは柱主筋４ｅを柱主筋孔３ａに定着する。その際、柱主筋孔３ａへのグラウト材の注入は中継筋４ａまたは柱主筋４ｅの挿入前に行ってもよいし、挿入後に行ってもよい。例えば、グラウト材の粘度が大きい場合は鉄筋挿入前に注入するなど、施工のし易さなどに応じて何れを先にするか適宜選択すればよい。また、グラウト材の注入の仕方として、柱主筋孔３ａの上端から流し込んでもよいし、柱主筋孔３ａの上端または下端からポンプを用いて圧入するようにしてもよい。
【００２４】
以上説明した実施形態および各変形例によれば、ＰＣ梁１の端面から突出する梁主筋１ａを仕口パネル部材３の梁主筋孔３ｂに横から挿入し、梁主筋孔３ｂ内に埋入された継手１１に定着することにより、ＰＣ梁１と仕口パネル部材３とを接合する。また、中継筋４ａまたは上階の柱主筋４ｅを仕口パネル部材３の柱主筋孔３ａに貫通させ、下階のＰＣ柱４に埋入された柱主筋用継手４ｃを介して柱主筋４ｂに連結することで、仕口パネル部材３とＰＣ柱４とを接合する。したがって、本実施形態では、現場でのコンクリート打設を行うことなく、ＰＣ柱４とＰＣ梁１とを接合することができる。
【００２５】
なお、仕口パネル部材３とＰＣ梁１とを接合する際、梁主筋１ａが仕口パネル部材３の梁主筋孔３ｂに挿入されるように、仕口パネル部材３をＰＣ柱４の頂部で横方向に移動させて設置する必要があるが、本実施形態では、中継筋４ａまたは柱主筋４ｅを上方から柱主筋孔３ｂに挿入する構成であるため、そのような仕口パネル部材３の移動および設置を行うことができる。すなわち、上記図２４や図２６に示す従来の構造のように下階の柱の頂部から柱主筋が突き出す場合には、仕口パネル部材３を横に移動させることができず、したがって、梁主筋１ａを梁主筋孔３ｂに横から挿入するという構成をとることができない。これに対して、本実施形態では、中継筋４ａまたは柱主筋４ｅを仕口パネル部材３の上方から挿入するようにしているので、梁主筋１ａを梁主筋孔３ｂに横から挿入して仕口パネル部材３に定着することができる。そのため、本実施形態では、図２６に示す従来の構成のように梁主筋の接続部に隙間が生ずることがなく、そのような接続部の隙間にコンクリートを打設するという工程が不要になるのである。
【００２６】
そして、上述のように現場でのコンクリート打設が不要になることで以下の効果が得られる。
▲１▼煩雑な型枠工事が不要となるため、作業工数を減らして、低コスト化および工期短縮を図ることができる。
▲２▼打ち増し薄肉プレキャスト材を特別に製作しなくとも、ＰＣ梁やＰＣ柱の表面に予め工場等で塗装やタイル等の仕上げを施しておくことが可能となる。
▲３▼クレーンの稼動効率が向上する。すなわち、現場でコンクリートを打設する場合には、型枠工事中やコンクリート打設中は、それらの工程が終わるまでクレーンによる揚重作業を止めねばならないため、クレーンの稼動効率が低くなってしまうが、本実施形態では、現場でのコンクリート打設がなくなるため、クレーンを連続して効率的に稼動させることができるのである。
▲４▼ＰＣ柱４、仕口パネル部材３、ＰＣ梁１の施工を連続して効率的に行うことができる。すなわち、例えば上記図２４や図２６に示す従来の構成では、ある階の床コンクリートを打設してその階の柱梁架構の施工が済んでからでないと、次の階の施工を行うことができないが、本実施形態では、柱梁を接続するためのコンクリート打設が不要のため、床コンクリートの打設を待つことなく、ＰＣ柱４、仕口パネル部材３、ＰＣ梁１の施工を連続して行うことができるのである。
【００２７】
図９は、本発明の第２の実施形態である柱梁接合構造２０の構成を示す斜視図である。また、図１０は、図９に示す柱梁接合構造２０の鉛直断面図である。図９および図１０に示すように、本実施形態では、上記第１実施形態の仕口パネル部材３とＰＣ梁１とを一体化した構成を有するＰＣ部材５を用いている。ただし、図１１に示すように、架構の末端部（同図では右端）には、例えば上記第１実施形態の直方体状の仕口パネル部材３を用いる。
【００２８】
ＰＣ部材５は、仕口パネル部５Ａと梁部５Ｂとを有しており、仕口パネル部５Ａには、鉛直方向に貫通する柱主筋孔５ａおよび水平方向に貫通する梁主筋孔５ｂが設けられている。梁主筋５ｃの仕口パネル部５Ａ側の端部は、梁主筋孔５ｂ内において上記図４〜図６に例示するような継手構造により定着されている。また、梁主筋５ｃのうち、下端筋は梁部５Ｂに埋入されてその端面から突出し、上端筋は梁部５Ｂから完全に露出している。
【００２９】
梁主筋５ｃの梁部５Ｂ側の先端は、隣接して設置されるＰＣ部材５の仕口パネル部５Ａの梁主筋孔５ｂに挿入され、その内部の継手により定着される。また、仕口パネル部５Ａの柱主筋孔５ａに上方から中継筋４ａが挿入され、下階のＰＣ柱４の柱主筋４ｂの上端部に埋入された柱主筋用継手４ｃを介して、下階の柱主筋４ｂに連結される。
【００３０】
図１２〜図１４は、上記第２実施形態の変形例である。図１２は、上記図６の構成と同様に、ＰＣ柱４の柱主筋４ｅを下端面から突出させ、この突出部分を下階の柱主筋４ｅに接続している。図１３および図１４は、上記図７および図８の構成と同様に、図１０および図１２に夫々示す構成において、柱主筋１ａの下端筋および上端筋の両方が梁コンクリートに埋入されて端面から突出する構成を示す。
【００３１】
なお、上記第２実施形態および各変形例では、仕口パネル部５Ａと一本の梁部５Ｂとが一体化された構成のＰＣ部材５を用いたが、これに限らず、図１５〜図１７に示すようなＰＣ部材６，７，８を用いることもできる。
【００３２】
図１５に示すＰＣ部材６は、仕口パネル部６Ａと、その両側から突き出す２本の梁部６Ｂ，６Ｃとを一体化したものである。このＰＣ部材６では、梁主筋６ａの端部が梁部６Ｂ，６Ｃの端面から突出している。
図１６に示すＰＣ部材７は、２つの仕口パネル部７Ａ，７Ｂと、それらを接続する梁部７Ｃとを一体化したものである。このＰＣ部材７では、柱主筋７ａの両端部が仕口パネル部７Ａ，７Ｂの梁主筋孔７ｂ内に埋入された継手に定着されている。
図１７に示すＰＣ部材８は、３つの仕口パネル部８Ａ，８Ｂ，８Ｃと、これらを接続する梁部８Ｄ，８Ｅとを一体化したものであり、梁主筋８ａの両端部が、両端に位置する仕口パネル部８Ａ，８Ｃの梁主筋孔８ｂ内に埋入された継手に定着されている。
なお、図１５〜図１７では、梁主筋６ａ，７ａ，８ａの下端筋のみが梁部に埋入される構成としているが、上端筋および下端筋の両方が梁部に埋入される構成であってもよい。
【００３３】
なお、図１８に模式的に例示するように、上記第１実施形態の仕口パネル部材３、ＰＣ梁１、上記第２実施形態のＰＣ部材５、および、図１５〜図１７に示すＰＣ部材６〜８等の各ＰＣ部材を適宜組み合わせて架構を構成することができる。なお、図１８では、架構の一方向の直線的な構成を示しているが、平面内の２方向において、各ＰＣ部材を適宜組み合わせて平面的な架構を構成することができる。
【００３４】
図１９は、本発明の第３実施形態である柱梁接合構造３０の構成を示す斜視図である。また、図２０は、図１９に示す柱梁接合構造３０の鉛直断面図である。本実施形態では、上記図１５に示すＰＣ部材６と同様に、仕口パネル部９Ａとその両側から突出する２本の梁部９Ｂ，９Ｃとを一体化したＰＣ部材９を用いている。梁部９Ｂ，９Ｃの長さは柱間のスパン全長に亘るものではなく、スパン中央部において、隣接する梁部９Ｂ、９Ｃが接合される構成としている。すなわち、梁部９Ｂ，９Ｃの長さはそれらの和がスパン長となるように設定されている。
【００３５】
仕口パネル部９Ａには垂直方向に貫通する柱主筋孔９ａが設けられており、中継筋４ａがこの柱主筋孔９ａに上方から挿入されて、下階のＰＣ柱４の上端部の柱主筋用継手４ｃを介して下階の柱主筋４ｂに連結される。また、梁部９Ｂの端面からは梁主筋９ｂの一端部が突出している。一方、梁部９Ｃの端部には、上記３〜図５に例示した構成の継手９ｃが埋入され、この継手９ｃに梁主筋９ｂの他端部が定着される。そして、梁部９Ｂから突出する梁主筋９ｂが、隣接するＰＣ部材９の梁部９Ｃに埋入された継手９ｃに挿入されて定着される。なお、図１９および図２０に示す構成では、梁主筋９ｂのうち上端筋は梁部９Ｂ，９Ｃから露出しているので、隣接するＰＣ部材９の上端筋同士は適宜な機械式継手で連結する。
【００３６】
図２１〜図２３は、上記第３実施形態の変形例である。図２１は、上記図６の構成と同様に、ＰＣ柱４の柱主筋４ｅを下端面から突出させ、この突出部分を下階の柱主筋４ｅに連結した構成を示す。図２２および図２３は、上記図７および図８の構成と同様に、図２１および図２２に示す構成において、梁主筋９ｂの下端筋および上端筋の両方が梁コンクリートに埋入されて端面から突出する構成を示す。
【００３７】
以上説明した本発明の第２および第３の実施形態並びにそれらの各変形例においても、現場でのコンクリート打設を行うことなく、ＰＣ柱４とＰＣ梁（梁部５Ｂ，６Ｂ，６Ｃ，７Ｃ，８Ｄ，８Ｅ，９Ｂ，９Ｃ）とを接合することができる。したがって、第１実施形態の場合と同様に上記▲１▼〜▲４▼の効果を得ることができる。
【００３８】
なお、上記各実施形態および各変形例では、架構に含まれる全ての柱梁仕口部が本発明に係る接合構造により接合されているものとしたが、一部の柱梁仕口部は、例えば図２４に示す従来構造のように現場打設コンクリートにより接合されていてもよい。要するに、架構の少なくとも一部の柱梁仕口部が本発明に係る接合構造により構成されていれば本発明の技術的範囲に含まれる。
【００３９】
【発明の効果】
本発明によれば、現場でのコンクリート打設を行うことが不要なＰＣ柱梁の接合構造を実現することができる。
【図面の簡単な説明】
【図１】本発明の第１の実施形態である柱梁接合構造の構成を示す斜視図である。
【図２】図１に示す柱梁接合構造の鉛直断面図である。
【図３】梁主筋孔に設けられた継手構造を詳細に示す図である。
【図４】継手構造の変形例を示す図である。
【図５】継手構造の別の変形例を示す図である。
【図６】本発明の第１の実施形態の第１の変形例を示す図である。
【図７】本発明の第１の実施形態の第２の変形例を示す図である。
【図８】本発明の第１の実施形態の第３の変形例を示す図である。
【図９】本発明の第２の実施形態である柱梁接合構造の構成を示す斜視図である。
【図１０】図９に示す柱梁接合構造の鉛直断面図である。
【図１１】本発明の第２の実施形態における柱梁架構の全体構成を模式的に示す図である。
【図１２】本発明の第２の実施形態の第１の変形例を示す図である。
【図１３】本発明の第２の実施形態の第２の変形例を示す図である。
【図１４】本発明の第２の実施形態の第３の変形例を示す図である。
【図１５】本発明の第２の実施形態におけるＰＣ部材の第１の変形例を示す図である。
【図１６】本発明の第２の実施形態におけるＰＣ部材の第２の変形例を示す図である。
【図１７】本発明の第２の実施形態におけるＰＣ部材の第２の変形例を示す図である。
【図１８】各ＰＣ部材を組み合わせて架構を構成した例を示す図である。
【図１９】本発明の第３実施形態である柱梁接合構造の構成を示す斜視図である。
【図２０】図１９に示す柱梁接合構造の鉛直断面図である。
【図２１】本発明の第３の実施形態の第１の変形例を示す図である。
【図２２】本発明の第３の実施形態の第２の変形例を示す図である。
【図２３】本発明の第３の実施形態の第３の変形例を示す図である。
【図２４】従来のＰＣ柱梁接合構造を示す斜視図である。
【図２５】特許文献１に開示される柱梁接合部のＰＣ部材を示す斜視図である。
【図２６】特許文献１に開示される構成を基にしたＰＣ柱梁接合構造を示す斜視図である。
【符号の説明】
１ＰＣ梁
１ａ，５ｃ，６ａ，７ａ，８ａ，９ｂ梁主筋
３仕口パネル部材
３ａ，５ａ，９ａ柱主筋孔
３ｂ，５ｂ，９ｂ梁主筋孔
４ＰＣ柱
４ａ中継筋
４ｂ，４ｅ柱主筋
４ｃ，４ｄ柱主筋用継手
５，６，７，８，９ＰＣ部材
５Ａ，６Ａ，７Ａ，７Ｂ，８Ａ，８Ｂ，８Ｃ，９Ａ仕口パネル部
５Ｂ，６Ｂ，６Ｃ，７Ｃ，８Ｄ，８Ｅ，９Ｂ，９Ｃ梁部
９ｃ継手
１０，２０，３０柱梁接合構造
１１鞘管
１１ａ凹凸部
１１ｂ，１１ｃ節[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint structure of precast concrete (PC) column beams and a frame structure including the joint structure.
[0002]
[Prior art]
Conventionally, a structure shown in FIG. 24 is generally used as a joint structure of concrete column beams. In the conventional column beam joining structure shown in the figure, the beam main reinforcement 102 (the bottom reinforcement in the example of the figure) is projected from the end face of the PC beam 100. Then, two adjacent PC beams 100 on the same straight line are installed so that their ends are opposed to each other on the column concrete 104, and the concrete is placed in the column beam joint with the floor concrete. The beam main bars 102 projecting from the respective end faces are connected by the above. 24 shows a configuration in which only the lower end bar protrudes from the end face of the PC beam 100 and the upper end bar is exposed from the PC beam 100, but both the upper and lower beam end bars are embedded in the PC beam 100. In some cases, it may protrude from the end face. Further, in FIG. 24, the lower end reinforcement is bent to secure the fixing with the on-site placing concrete. However, the present invention is not limited to this, and the beam main reinforcement may be connected by a mechanical joint.
[0003]
Patent Document 1 discloses a structure in which a column beam joint is formed of a PC member. In the structure disclosed in Patent Document 1, column beams are joined via a PC member 200 as shown in FIG. The PC member 200 includes a rectangular parallelepiped main body 202 and a plurality of through holes 204a and 204b penetrating the main body 202 in the vertical direction and the vertical direction. By inserting a beam line through the horizontal through-hole 204b of the PC member 200 and injecting grout, the beam line is integrated with the PC member 200. The PC member 200 is lifted up to the column beam joint, the column beam protruding from the column head is inserted into the vertical through hole 204a, and the grout is injected to join the column beam.
[0004]
[Patent Document 1]
JP-A-2-101237 gazette
[Problems to be solved by the invention]
As described above, in the conventional configuration shown in FIG. 24, it is necessary to place concrete in the column beam joint at the site. Also in the configuration disclosed in Patent Document 1, the concrete of the beam is placed on site. However, in order to place concrete on site, the number of processes increases, such as the need to install and dismantle the formwork, leading to an increase in cost and a longer construction period.
[0006]
In addition, based on the configuration disclosed in Patent Document 1, it is conceivable to integrate the rectangular parallelepiped joint portion 300A and the beam portion 300B as the PC member 300 as shown in FIG. In this configuration, the main beam 302 protrudes from the end surface of the beam portion 300B, and the main beam 302 protruding from the end surface of the opposite beam portion 300B in the center portion of the beam span (X portion in FIG. 26) Connect by putting concrete together with floor concrete in the part. Therefore, even in the configuration shown in FIG. 26, it is necessary to place concrete at the connection portion between the beam main bars, and formwork is also required.
[0007]
The present invention has been made in view of the above points, and an object of the present invention is to provide a PC column beam joint structure that does not require concrete placement on site and a frame structure including the joint structure.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a precast concrete (PC) beam in which an end portion of a beam main bar protrudes horizontally from an end surface, a column main bar, and a column main bar at least at the upper end of the column main bar. A PC column in which a coupling joint is embedded, and a rectangular parallelepiped PC joint panel member having a vertical through-hole for inserting a column main bar and a beam main bar coupling joint embedded therein Configured,
Wherein by moving the PC Joint panel member in the horizontal direction, the beam main reinforcement of the PC beams, are fixed by being inserted into the PC Joint panel joint implanted by a beam main reinforcement for connecting to the member,
The column main bar of the PC column on the upper floor or the relay bar to be connected to the column main bar is inserted into the through hole of the joint panel member from above and penetrates the PC joint panel member. Fixed to the joint embedded in the upper end of the main column of the PC column,
The length of the PC beam is configured to be the total span length of the frame .
[0009]
According to the present invention, the PC beam and the PC joint panel member are joined by fixing the beam main bar to the joint embedded in the PC joint panel member. The upper and lower column main bars are fixed by penetrating through the PC joint panel member. Further, the column main bars on the upper floor side or the relay bars to be connected thereto are inserted into the through holes of the PC joint panel member from above, so that the beam main bars protruding from the PC beam are joints of the PC joint panel member. The PC joint panel member is moved sideways so as to be inserted into the cable, and then the column main reinforcement or relay reinforcement is inserted from above, so that the joint can be constructed smoothly. Therefore, according to the present invention, the PC column and the PC beam can be joined without performing concrete placement on site.
[0010]
Further, the present invention has a PC beam in which the end portion of the beam main bar protrudes in the horizontal direction from the end surface, a vertical through hole for inserting the column main bar, and a joint for connecting the beam main bar is embedded. A PC member formed by integrating a rectangular parallelepiped PC joint panel member;
The column main reinforcement is embedded, and is constituted by a PC column in which a joint for connecting the column main reinforcement is embedded at least at the upper end of the column main reinforcement,
By moving the PC member in the horizontal direction, the beam main bar protruding from the end of the PC beam of the PC member adjacent to the PC member is embedded in the joint panel member of the PC member. Inserted into the joint for fixing,
A column main bar of the PC column on the upper floor or a relay bar to be connected to the column main bar is inserted into the through hole of the PC joint panel member from above to penetrate the PC joint panel member, and the PC Fixed to the joint embedded in the upper end of the column main reinforcement of the column ,
The length of the PC beam is configured to be the total span length of the frame .
[0011]
Further, the present invention provides a rectangular parallelepiped PC joint panel member having a vertical through-hole for inserting a column main reinforcement, the horizontal direction from the PC joint panel member , and an end of the beam main reinforcement from the end face. A PC member in which the first and second PC beams projecting in the horizontal direction are integrated;
The column main reinforcement is embedded, and is constituted by a PC column in which a joint for connecting the column main reinforcement is embedded at least at the upper end of the column main reinforcement,
A column main bar of the PC column on the upper floor or a relay bar to be connected to the column main bar is inserted into the through hole of the PC joint panel member from above to penetrate the PC joint panel member, and the PC Fixed to the joint embedded in the upper end of the column main reinforcement of the column ,
By moving the PC member in the horizontal direction, the beam main bar protruding from one end face of the first or second PC beam is embedded in the PC joint panel member adjacent to the one PC beam. Inserted into the joint for connecting the main beam of the beam,
The lengths of the first and second PC beams are respectively configured to be the total span length of the frame .
[0012]
Further, according to the present invention, a plurality of rectangular parallelepiped PC joint panel members having vertical through holes for inserting column main bars and a PC beam connecting the plurality of PC joint panel members are integrated. PC member formed,
The column main reinforcement is embedded, and is constituted by a PC column in which a joint for connecting the column main reinforcement is embedded at least at the upper end of the column main reinforcement,
The beam main bar extends through the PC member in the horizontal direction, and both ends thereof are fixed to the joint for connecting the beam main bar embedded in the PC joint panel member positioned at both ends of the PC member,
Relay muscles to be connected to the upper floor of the column main reinforcement or the pillar main reinforcement of the PC post is inserted from above through the PC Joint panel member into the through hole of the PC Joint panel member, the PC Fixed to the joint embedded in the upper end of the column main reinforcement of the column ,
By moving the PC member in the horizontal direction, from one end of the PC beam to be joined to the PC joint panel member to one of the joints for connecting the beam main bars of the PC joint panel member located at the both ends. The protruding beam main bar is inserted and fixed,
The length of the PC beam to be joined to the one PC joint panel member is configured to be the span overall length of the frame.
Further, the present invention provides a rectangular parallelepiped PC joint panel member having a vertical through-hole for inserting a column main reinforcement, and first and second PC beams extending from the PC joint panel member to both sides in the horizontal direction. And a PC member integrated with,
A column main bar is embedded, and is composed of a PC column in which a column main bar coupling joint is embedded at least at the upper end of the column main bar,
The main beam of the beam extends through the PC member in the horizontal direction, and the end portion on the first PC beam side protrudes from the end surface of the first PC beam, and on the second PC beam side. At the end, a joint for connecting the main beam of the beam is embedded in the second PC beam,
By moving the PC member in the horizontal direction, the ends of the beam main reinforcement protruding from the first PC beam of the PC member, embedded in the second PC beams PC member adjacent to the PC member Inserted into the joint and fixed,
A column main bar of the PC column on the upper floor or a relay bar to be connected to the column main bar is inserted into the through hole of the PC joint panel member from above to penetrate the PC joint panel member, and the PC Fixed to the joint embedded in the upper end of the column main reinforcement of the column,
The first and second beam portions are configured such that the sum of their lengths is the total span length of the frame .
[0014]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view showing a configuration of a beam-column joining structure 10 according to the first embodiment of the present invention. FIG. 2 is a vertical sectional view of the beam-column joint structure 10 shown in FIG. As shown in FIG. 1 and FIG. 2, the beam-column joining structure 10 joins the PC beam 1 and the PC column 4 at the joint panel member 3 arranged at the head of the PC column 4. 1 and 2 show a state in which the PC beam 1, the PC pillar 4, the joint panel member 3, and the relay bar 4a are disassembled, and each member is installed in the direction indicated by the arrow in the drawing. Thus, the beam-column joint structure 10 is completed.
[0015]
The PC beam 1 has a length that spans the span length of the frame, and both ends thereof are joined to the PC column 4 via the joint panel member 3. However, when the span length of the frame is long, the PC beam may be divided into a plurality (for example, 2 to 3) and joined to be used as the PC beam 1. The joint panel member 3 is a PC member configured in a rectangular parallelepiped shape, and includes a plurality of column main reinforcement holes 3a penetrating in the vertical direction and a plurality of beam main reinforcement holes 3b penetrating in the horizontal direction.
[0016]
The lower end of the main beam 1a of the PC beam 1 is embedded in the beam concrete, its end protrudes from the beam end face, and the upper end is completely exposed from the beam concrete. The main beam 1a of the PC beam 1 arranged on both sides of the joint panel member 3 is inserted into the main beam hole 3b of the joint panel member 3 from both sides and is mutually connected by a joint embedded in the main beam hole 3b. Connected. The structure of the joint in the beam main hole 3b will be described later.
[0017]
A relay bar 4a is inserted into the columnar main hole 3a of the joint panel member 3 from above. The relay bar 4a is a reinforcing bar for relaying the column main bar 4b of the PC beam 4 on the lower floor and the column main bar 4b of the PC column 4 on the upper floor. A column main bar joint 4c is embedded in the upper end portion of the column main bar 4b of the PC column 4, and the lower end portion of the relay bar 4a is fixed to the column main bar joint 4c so that the lower column main bar 4b is fixed. Connected. A column main bar joint 4d is also embedded in the lower end of the column main bar 4b, and the upper end of the relay bar 4a is fixed to the column main bar joint 4d. That is, in FIG. 1 and FIG. 2, when constructing an unillustrated upper-level PC column 4, the upper end of the relay bar 4 a is fixed to the column main bar joint 4 d at the lower end. Thus, in this embodiment, the column main bar joints 4c and 4d are respectively embedded in the upper and lower ends of the column main bar 4b of the PC column 4, and the column main bar joint 4c on the upper end side of the PC column 4 on the lower floor, The relay bar 4a that penetrates the joint panel member 3 is connected to the column main bar joint 4d on the lower end side of the PC column 4 on the upper floor.
[0018]
When constructing the column beam connection structure 10, first, the joint panel member 3 is installed on the upper part of the PC column 4-1 located at the end of the frame, and the relay bar 4a is inserted into the column main reinforcement hole 3a from above. At the same time, a beam main bar 1a protruding from one end of the PC beam 1 to be joined to the joint panel member 3 is inserted into the beam main bar hole 3b. Next, the next joint panel member 3 is inserted on the PC column 4-2 adjacent to the PC column 4-1, and the beam main reinforcing bar 1a protruding from the other end of the PC beam 1 is inserted into the beam main reinforcing bar hole 3b. Install it while moving it horizontally. Then, a relay bar 4a is inserted into the column main reinforcement hole 3a of the joint panel member 3 from above, and a beam protruding from one end of the next PC beam 1 to be joined to the joint panel member 3 into the beam main reinforcement hole 3b. The main muscle 1a is inserted. A frame is constructed by repeating such operations and joining column beams.
[0019]
FIG. 3 shows in detail the joint structure of the main beam bars provided in the main beam hole 3b. As shown in the figure, a sheath tube 11 is provided in the beam main reinforcement hole 3b, and the distal end of the beam reinforcement 1a is inserted from both sides of the beam reinforcement hole 3b until reaching the inside of the sheath tube 11. The joint panel member 3 is provided with a grout injection hole 3c for connecting the outer surface of the joint panel member 3 to the beam main reinforcement hole 3b. By injecting a grout material from the grout injection hole 3c, the beam main reinforcement 1a is sheathed. Fixed to the tube 11. Further, the outer circumferential surface of the sheath tube 11 is provided with a concavo-convex portion 11a over almost the entire length, and the adhesion force between the sheath tube 11 and the concrete of the joint panel member 3 is enhanced by the concavo-convex portion 11a. Therefore, even when a large tension is generated in the beam main reinforcing bar 1a, the sheath tube 11 can be firmly held in the beam main reinforcing bar hole 3b.
[0020]
In addition, the structure of the unevenness | corrugation provided in the outer peripheral surface of the sheath pipe 11 is not restricted to what is shown in FIG. 3, For example, as shown in FIG. 4, you may provide the node 11b in the both ends of the sheath pipe 11, and FIG. As shown in FIG. 5, a node 11 c may be provided at the center of the sheath tube 11. Alternatively, the uneven portion 11a as shown in FIG. 3 may be provided, and the nodes 11b at both ends or the nodes 11c at the center may be provided.
In addition, in FIGS. 3-5, it is good also as a structure in which the sheath pipe | tube 11 has the length covering the full width of the joint panel member 3. FIG.
[0021]
FIG. 6 is a diagram showing a modification of the first embodiment. In the configuration shown in the figure, the column main reinforcement 4 e is projected from the lower end surface of the PC column 4. Moreover, the column main bar joint 4c is embedded in the upper end portion of the column main bar 4e as in the above embodiment. Then, the protruding portion of the column main reinforcement 4e of the PC pillar 4 on the upper floor is inserted into the column main reinforcement hole 3a of the joint panel member 3 from above, and the joint panel member 3 is penetrated so that the PC pillar 4 of the lower floor is inserted. It is connected to the column main bar joint 4c.
[0022]
FIGS. 7 and 8 show modifications corresponding to the configurations shown in FIGS. 2 and 6, respectively. In FIG. 2 and the configuration of FIG. 6 which is a modified example thereof, only the lower bar of the PC beam 1 is embedded in the beam concrete and protrudes from the end surface, and the upper bar is completely exposed from the beam concrete. On the other hand, in the configuration shown in FIGS. 7 and 8, both the bottom and top bars are embedded in the beam concrete so as to protrude from the end surface.
[0023]
2 and 6 to 8, after inserting the relay bar 4 a or the column main bar 4 e into the column main bar hole 3 a of the joint panel member 3, the relay bar 4 a or the column main bar 4 e is made of grout material. It settles in the column main muscle hole 3a. At that time, the grout material may be injected into the column main reinforcement holes 3a before or after the insertion of the relay reinforcement 4a or the column main reinforcement 4e. For example, when the grout material has a high viscosity, it may be selected as appropriate depending on the ease of construction, such as pouring before inserting the reinforcing bar. Further, as a method of injecting the grout material, the grout material may be poured from the upper end of the columnar main muscle hole 3a, or may be press-fitted using a pump from the upper end or the lower end of the column main muscle hole 3a.
[0024]
According to the embodiment and each modification described above, the main beam 1a protruding from the end face of the PC beam 1 is inserted into the main beam hole 3b of the joint panel member 3 from the side and embedded in the main beam hole 3b. By fixing to the joint 11, the PC beam 1 and the joint panel member 3 are joined. Further, the relay bar 4a or the column main bar 4e on the upper floor is passed through the column main bar hole 3a of the joint panel member 3, and is connected to the column main bar 4b via the column main bar joint 4c embedded in the PC column 4 on the lower floor. By connecting, the joint panel member 3 and the PC pillar 4 are joined. Therefore, in this embodiment, the PC pillar 4 and the PC beam 1 can be joined without performing concrete placement on site.
[0025]
When the joint panel member 3 and the PC beam 1 are joined, the joint panel member 3 is placed at the top of the PC column 4 so that the beam main reinforcement 1a is inserted into the beam main reinforcement hole 3b of the connection panel member 3. In this embodiment, the relay bar 4a or the column main bar 4e is inserted into the column main bar hole 3b from above, so that the movement of the joint panel member 3 is necessary. And can be installed. That is, when the column main bar protrudes from the top of the lower column as in the conventional structure shown in FIGS. 24 and 26, the joint panel member 3 cannot be moved sideways, and therefore the beam main bar The configuration in which 1a is inserted into the beam main hole 3b from the side cannot be taken. On the other hand, in the present embodiment, since the relay bar 4a or the column main bar 4e is inserted from above the joint panel member 3, the beam main bar 1a is inserted into the beam main bar hole 3b from the side to make the joint. It can be fixed to the panel member 3. For this reason, in this embodiment, there is no gap in the connecting portion of the main beam of the beam as in the conventional configuration shown in FIG. 26, and the process of placing concrete in the gap in such a connecting portion becomes unnecessary. is there.
[0026]
And since the concrete placement in the field becomes unnecessary as mentioned above, the following effects are acquired.
{Circle around (1)} Since complicated formwork is not required, the number of work steps can be reduced, and the cost can be reduced and the construction period can be shortened.
{Circle around (2)} The surface of the PC beam or PC pillar can be pre-finished with paint or tile at a factory or the like without specially producing a thin precast material.
(3) Crane operating efficiency is improved. In other words, when placing concrete on-site, the crane lifting operation must be stopped during the formwork and concrete placement until the completion of those processes, resulting in lower crane operating efficiency. However, in this embodiment, since there is no concrete placement on site, the crane can be operated continuously and efficiently.
(4) Construction of the PC pillar 4, the joint panel member 3, and the PC beam 1 can be performed continuously and efficiently. That is, for example, in the conventional configuration shown in FIG. 24 and FIG. 26, the next floor can be constructed only after the floor concrete on one floor is placed and the construction of the column beam structure on that floor is completed. However, in this embodiment, it is not necessary to place concrete for connecting the columns and beams, so the construction of the PC pillar 4, the joint panel member 3, and the PC beam 1 is continuously performed without waiting for the placement of floor concrete. Can be done.
[0027]
FIG. 9 is a perspective view showing a configuration of a beam-column joining structure 20 according to the second embodiment of the present invention. FIG. 10 is a vertical sectional view of the beam-column joint structure 20 shown in FIG. As shown in FIGS. 9 and 10, in this embodiment, a PC member 5 having a configuration in which the joint panel member 3 and the PC beam 1 of the first embodiment are integrated is used. However, as shown in FIG. 11, for example, the rectangular parallelepiped joint panel member 3 of the first embodiment is used at the end of the frame (the right end in the figure).
[0028]
The PC member 5 has a joint panel portion 5A and a beam portion 5B. The joint panel portion 5A is provided with a column main reinforcement hole 5a penetrating in the vertical direction and a beam principal reinforcement hole 5b penetrating in the horizontal direction. It has been. The end of the beam main bar 5c on the side of the joint panel 5A is fixed in the beam main bar hole 5b by the joint structure illustrated in FIGS. Further, among the beam main bars 5c, the lower end bars are embedded in the beam portion 5B and project from the end surfaces thereof, and the upper end bars are completely exposed from the beam portion 5B.
[0029]
The distal end of the beam main bar 5c on the beam part 5B side is inserted into the beam main bar hole 5b of the joint panel part 5A of the PC member 5 installed adjacent to the beam main bar 5c, and is fixed by a joint inside the beam main bar 5B. Further, a relay bar 4a is inserted into the column main reinforcement hole 5a of the joint panel portion 5A from above, and the column main reinforcement joint 4c embedded in the upper end of the column main reinforcement 4b of the PC pillar 4 on the lower floor It is connected to the pillar main reinforcement 4b of the floor.
[0030]
12 to 14 are modifications of the second embodiment. In FIG. 12, the column main reinforcement 4e of the PC column 4 protrudes from the lower end surface, and this protruding portion is connected to the column main reinforcement 4e on the lower floor, as in the configuration of FIG. FIGS. 13 and 14 are similar to the configurations of FIGS. 7 and 8 described above. In the configurations shown in FIGS. 10 and 12, both the bottom and top bars of the columnar main bars 1a are embedded in the beam concrete. The structure which protrudes from is shown.
[0031]
In addition, in the said 2nd Embodiment and each modification, although PC member 5 of the structure by which the joint panel part 5A and one beam part 5B were integrated was used, it is not restricted to this, FIGS. PC members 6, 7, and 8 as shown in FIG. 17 can also be used.
[0032]
The PC member 6 shown in FIG. 15 is obtained by integrating a joint panel portion 6A and two beam portions 6B and 6C protruding from both sides thereof. In this PC member 6, the end part of the beam main reinforcement 6a protrudes from the end surfaces of the beam parts 6B and 6C.
A PC member 7 shown in FIG. 16 is obtained by integrating two joint panel portions 7A and 7B and a beam portion 7C connecting them. In the PC member 7, both end portions of the column main reinforcement 7a are fixed to joints embedded in the beam main reinforcement holes 7b of the joint panel portions 7A and 7B.
The PC member 8 shown in FIG. 17 is formed by integrating three joint panel portions 8A, 8B, and 8C and beam portions 8D and 8E that connect them, and both end portions of the beam main bar 8a are at both ends. It is fixed to a joint embedded in the main beam hole 8b of the joint panel portion 8A, 8C that is positioned.
In FIGS. 15 to 17, only the bottom bars of the beam main bars 6 a, 7 a, and 8 a are embedded in the beam part, but both the upper and lower bars are embedded in the beam part. There may be.
[0033]
As schematically illustrated in FIG. 18, the joint panel member 3 of the first embodiment, the PC beam 1, the PC member 5 of the second embodiment, and the PC members shown in FIGS. 15 to 17. The frame can be configured by appropriately combining PC members such as 6-8. Although FIG. 18 shows a linear configuration in one direction of the frame, a planar frame can be configured by appropriately combining the PC members in two directions in the plane.
[0034]
FIG. 19 is a perspective view showing a configuration of a column beam joint structure 30 according to the third embodiment of the present invention. FIG. 20 is a vertical cross-sectional view of the beam-column joint structure 30 shown in FIG. In the present embodiment, similarly to the PC member 6 shown in FIG. 15, the PC member 9 in which the joint panel portion 9A and the two beam portions 9B and 9C protruding from both sides thereof are integrated is used. The length of the beam portions 9B and 9C does not extend over the entire span length between the columns, and the adjacent beam portions 9B and 9C are joined at the center portion of the span. That is, the lengths of the beam portions 9B and 9C are set so that the sum thereof becomes the span length.
[0035]
The joint panel portion 9A is provided with a column main reinforcement hole 9a penetrating in the vertical direction. The relay reinforcement 4a is inserted into the column main reinforcement hole 9a from above, and the column main reinforcement at the upper end portion of the PC pillar 4 on the lower floor. It connects with the pillar main reinforcement 4b of a lower floor through the joint 4c for an object. Further, one end portion of the beam main bar 9b protrudes from the end surface of the beam portion 9B. On the other hand, the joint 9c having the configuration illustrated in FIGS. 3 to 5 is embedded in the end of the beam 9C, and the other end of the beam main bar 9b is fixed to the joint 9c. And the beam main reinforcement 9b which protrudes from the beam part 9B is inserted in the joint 9c embedded in the beam part 9C of the adjacent PC member 9, and is fixed. In the configuration shown in FIGS. 19 and 20, since the upper end bars of the beam main reinforcing bars 9b are exposed from the beam portions 9B and 9C, the upper end bars of the adjacent PC members 9 are connected by an appropriate mechanical joint. .
[0036]
21 to 23 are modified examples of the third embodiment. FIG. 21 shows a configuration in which the column main reinforcement 4e of the PC column 4 protrudes from the lower end surface, and this protruding portion is connected to the column main reinforcement 4e on the lower floor, in the same manner as the configuration of FIG. FIGS. 22 and 23 are similar to the configurations of FIGS. 7 and 8 described above, in the configuration shown in FIGS. 21 and 22, both the bottom and top bars of the beam main reinforcing bar 9 b are embedded in the beam concrete from the end surface. A protruding configuration is shown.
[0037]
In the second and third embodiments of the present invention described above and the modifications thereof, the PC pillar 4 and the PC beam (beam portions 5B, 6B, 6C, and 7C can be used without performing concrete placement on site. , 8D, 8E, 9B, 9C). Therefore, the effects (1) to (4) can be obtained as in the case of the first embodiment.
[0038]
In each of the above-described embodiments and modifications, all the column beam joints included in the frame are joined by the joint structure according to the present invention. For example, it may be joined by on-site cast concrete as in the conventional structure shown in FIG. In short, it is included in the technical scope of the present invention if at least a part of the column beam joints of the frame is constituted by the joint structure according to the present invention.
[0039]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the joining structure of PC column beam which does not need to perform concrete placement in the field is realizable.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of a beam-column joint structure according to a first embodiment of the present invention.
FIG. 2 is a vertical sectional view of the column beam connection structure shown in FIG. 1;
FIG. 3 is a diagram showing in detail a joint structure provided in a beam main hole.
FIG. 4 is a view showing a modified example of the joint structure.
FIG. 5 is a view showing another modified example of the joint structure.
FIG. 6 is a diagram showing a first modification of the first embodiment of the present invention.
FIG. 7 is a diagram showing a second modification of the first embodiment of the present invention.
FIG. 8 is a diagram showing a third modification of the first embodiment of the present invention.
FIG. 9 is a perspective view showing a configuration of a beam-column joint structure according to a second embodiment of the present invention.
10 is a vertical sectional view of the beam-column joint structure shown in FIG. 9;
FIG. 11 is a diagram schematically showing an overall configuration of a column beam frame in a second embodiment of the present invention.
FIG. 12 is a diagram showing a first modification of the second embodiment of the present invention.
FIG. 13 is a diagram showing a second modification of the second embodiment of the present invention.
FIG. 14 is a diagram showing a third modification of the second embodiment of the present invention.
FIG. 15 is a view showing a first modified example of the PC member in the second embodiment of the present invention.
FIG. 16 is a view showing a second modification of the PC member in the second embodiment of the present invention.
FIG. 17 is a view showing a second modification of the PC member in the second embodiment of the present invention.
FIG. 18 is a diagram illustrating an example in which a frame is configured by combining PC members.
FIG. 19 is a perspective view showing a configuration of a beam-column joint structure according to a third embodiment of the present invention.
20 is a vertical sectional view of the beam-column joint structure shown in FIG.
FIG. 21 is a diagram showing a first modification example of the third embodiment of the present invention.
FIG. 22 is a diagram showing a second modification example of the third embodiment of the present invention.
FIG. 23 is a diagram showing a third modification example of the third embodiment of the present invention.
FIG. 24 is a perspective view showing a conventional PC beam-column joining structure.
25 is a perspective view showing a PC member of a column beam joint disclosed in Patent Document 1. FIG.
FIG. 26 is a perspective view showing a PC beam-column joining structure based on the configuration disclosed in Patent Document 1.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 PC beam 1a, 5c, 6a, 7a, 8a, 9b Beam main reinforcement 3 Joint panel member 3a, 5a, 9a Column main reinforcement hole 3b, 5b, 9b Beam main reinforcement hole 4 PC column 4a Relay reinforcement 4b, 4e Column main reinforcement 4c, 4d Column main bar joint 5, 6, 7, 8, 9 PC member 5A, 6A, 7A, 7B, 8A, 8B, 8C, 9A Joint panel 5B, 6B, 6C, 7C, 8D, 8E, 9B, 9C Beam portion 9c Joint 10, 20, 30 Column-beam joint structure 11 Sheath tube 11a Concave portion 11b, 11c

Claims

A precast concrete (PC) beam in which the end of the beam main bar protrudes in the horizontal direction from the end surface, a PC column in which the column main bar is embedded, and a column main bar coupling joint is embedded in at least the upper end of the column main bar; A rectangular parallelepiped PC joint panel member having a vertical through-hole for inserting the column main reinforcement and embedded with a joint for connecting the beam main reinforcement,
Wherein by moving the PC Joint panel member in the horizontal direction, the beam main reinforcement of the PC beams, are fixed by being inserted into the PC Joint panel joint implanted by a beam main reinforcement for connecting to the member,
The column main bar of the PC column on the upper floor or the relay bar to be connected to the column main bar is inserted into the through hole of the joint panel member from above and penetrates the PC joint panel member. Fixed to the joint embedded in the upper end of the main column of the PC column,
The PC column beam joining structure is characterized in that the length of the PC beam is configured to be the span overall length of the frame .

A rectangular parallelepiped PC joint with a PC beam with the end of the beam reinforcement projecting from the end face in the horizontal direction, a vertical through-hole for inserting the column reinforcement, and a joint for connecting the beam reinforcement A PC member integrated with a panel member;
The column main reinforcement is embedded, and is constituted by a PC column in which a joint for connecting the column main reinforcement is embedded at least at the upper end of the column main reinforcement,
By moving the PC member in the horizontal direction, the beam main bar protruding from the end of the PC beam of the PC member adjacent to the PC member is embedded in the joint panel member of the PC member. Inserted into the joint for fixing,
A column main bar of the PC column on the upper floor or a relay bar to be connected to the column main bar is inserted into the through hole of the PC joint panel member from above to penetrate the PC joint panel member, and the PC Fixed to the joint embedded in the upper end of the column main reinforcement of the column ,
The PC column beam joining structure is characterized in that the length of the PC beam is configured to be the span overall length of the frame .

A rectangular parallelepiped PC joint panel member having a vertical through-hole for inserting the column main reinforcement, the PC joint panel member extending horizontally on both sides, and the end of the beam reinforcement projecting horizontally from the end face A PC member formed by integrating the first and second PC beams;
The column main reinforcement is embedded, and is constituted by a PC column in which a joint for connecting the column main reinforcement is embedded at least at the upper end of the column main reinforcement,
A column main bar of the PC column on the upper floor or a relay bar to be connected to the column main bar is inserted into the through hole of the PC joint panel member from above to penetrate the PC joint panel member, and the PC Fixed to the joint embedded in the upper end of the column main reinforcement of the column ,
By moving the PC member in the horizontal direction, the beam main bar protruding from one end face of the first or second PC beam is embedded in the PC joint panel member adjacent to the one PC beam. Inserted into the joint for connecting the main beam of the beam,
The length of the first and second PC beams is configured to be the entire span length of the frame, respectively .

PC member in which a plurality of rectangular parallelepiped PC joint panel members having vertical through-holes for inserting column main bars and a PC beam connecting the plurality of PC joint panel members are integrated When,
The column main reinforcement is embedded, and is constituted by a PC column in which a joint for connecting the column main reinforcement is embedded at least at the upper end of the column main reinforcement,
The beam main bar extends through the PC member in the horizontal direction, and both ends thereof are fixed to the joint for connecting the beam main bar embedded in the PC joint panel member positioned at both ends of the PC member,
Relay muscles to be connected to the upper floor of the column main reinforcement or the pillar main reinforcement of the PC post is inserted from above through the PC Joint panel member into the through hole of the PC Joint panel member, the PC Fixed to the joint embedded in the upper end of the column main reinforcement of the column ,
By moving the PC member in the horizontal direction, from one end of the PC beam to be joined to the PC joint panel member to one of the joints for connecting the beam main bars of the PC joint panel member located at the both ends. The protruding beam main bar is inserted and fixed,
A PC beam-to-beam connection structure characterized in that the length of the PC beam to be bonded to the one PC joint panel member is configured to be the span overall length of the frame .

A rectangular parallelepiped PC joint panel member having a vertical through-hole for inserting the column main reinforcement and the first and second PC beams extending from the PC joint panel member on both sides in the horizontal direction are integrated. A PC member;
A column main bar is embedded, and is composed of a PC column in which a column main bar coupling joint is embedded at least at the upper end of the column main bar,
The main beam of the beam extends through the PC member in the horizontal direction, and the end portion on the first PC beam side protrudes from the end surface of the first PC beam, and on the second PC beam side. At the end, a joint for connecting the main beam of the beam is embedded in the second PC beam,
By moving the PC member in the horizontal direction, the ends of the beam main reinforcement protruding from the first PC beam of the PC member, embedded in the second PC beams PC member adjacent to the PC member Inserted into the joint and fixed,
A column main bar of the PC column on the upper floor or a relay bar to be connected to the column main bar is inserted into the through hole of the PC joint panel member from above to penetrate the PC joint panel member, and the PC Fixed to the joint embedded in the upper end of the column main reinforcement of the column,
The first and second beam portions are configured such that the sum of their lengths is the span total length of the frame, and the connection structure of PC column beams.

6. The connection of a PC column beam according to claim 1, wherein only a lower end of the main beam of the beam is embedded in the concrete of the PC beam and protrudes from the end surface of the concrete. Construction.

6. The PC pillar according to claim 1, wherein both the bottom and top bars of the beam main bar are embedded in the concrete of the PC beam and protrude from the end surface of the concrete. Beam connection structure.

Joints for connecting column main bars are embedded in the upper and lower ends of the column main bars of the PC column, and the joint on the upper end side of the PC column on the lower floor and the joint on the lower end side of the PC column on the upper floor The connecting structure of the PC column beam according to any one of claims 1 to 7 , wherein a relay bar penetrating through the through hole of the PC joint panel member is connected between the two.

A column main bar coupling is embedded only in the upper end of the column main bar of the PC column, and the lower end of the column main bar protrudes from the lower end surface of the PC column and penetrates the through hole of the PC joint panel member. The joint structure of PC pillar beams according to any one of claims 1 to 7 , wherein the joint structure is connected to the joint of the PC pillar on the lower floor.

The joint for connecting beam main bars is constituted by a sleeve tube provided with a convex portion on the outer periphery, and an end portion of the beam main bar is inserted inside the sleeve tube and fixed by mortar. Item 10. The joint structure of PC columns and beams according to any one of Items 1 to 9 .

A precast concrete (PC) beam in which the end of the beam main bar protrudes in the horizontal direction from the end surface, a PC column in which the column main bar is embedded, and a column main bar coupling joint is embedded in at least the upper end of the column main bar; A method of joining PC column beams, which has a vertical through-hole for inserting a column main reinforcement and a rectangular parallelepiped PC joint panel member embedded with a joint for connecting a beam main reinforcement,
  The PC joint panel member is moved in the horizontal direction so that the beam main bar protruding from the end face of the PC beam is inserted into the joint for connecting the beam main bar embedded in the PC joint panel member. Installing on the PC pillar of
  Fixing the beam main reinforcement inserted into the joint;
  The column main bar of the PC column on the upper floor or the relay bar to be connected to the column main bar is inserted into the through hole of the PC joint panel member from above to penetrate the PC joint panel member, and the lower floor And fixing to the joint embedded in the upper end portion of the main column of the PC column. PC column beam joining method.

A rectangular parallelepiped PC joint with a PC beam with the end of the beam reinforcement projecting from the end face in the horizontal direction, a vertical through-hole for inserting the column reinforcement, and a joint for connecting the beam reinforcement A PC member integrated with a panel member;
  A method of joining PC column beams, in which a column main bar is embedded, and a PC column in which a column main bar coupling joint is embedded at least at the upper end of the column main bar,
  The PC member is moved in the horizontal direction so that the end of the beam main bar protruding from the end of the PC beam is inserted into the joint for connecting the beam main bar embedded in the adjacent PC connection panel member. And installing the PC joint panel member on the PC pillar on the lower floor,
  Fixing the beam main bars inserted in the joint; and
  The column main bar of the PC column on the upper floor or the relay bar to be connected to the column main bar is inserted into the through hole of the PC joint panel member from above to penetrate the PC joint panel member, and the PC And a step of fixing to the joint embedded in the upper end portion of the column main reinforcement of the column.

A rectangular parallelepiped PC joint panel member having a vertical through-hole for inserting the column main reinforcement, the PC joint panel member extending horizontally on both sides, and the end of the beam reinforcement projecting horizontally from the end face A PC member formed by integrating the first and second PC beams;
  A method of joining PC column beams, in which a column main bar is embedded, and a PC column in which a column main bar coupling joint is embedded at least at the upper end of the column main bar,
  The PC member such that a beam main bar protruding from one end face of the first and second PC beams is inserted into a joint for connecting a beam main bar embedded in an adjacent PC connection panel member. Horizontally moving the PC joint panel member on the PC pillar on the lower floor;
  Fixing the beam main reinforcement inserted into the joint;
  The column main bar of the PC column on the upper floor or the relay bar to be connected to the column main bar is inserted into the through hole of the PC joint panel member from above to penetrate the PC joint panel member, and the PC And a step of fixing to the joint embedded in the upper end portion of the column main reinforcement of the column.

PC member in which a plurality of rectangular parallelepiped PC joint panel members having vertical through-holes for inserting column main bars and a PC beam connecting the plurality of PC joint panel members are integrated The beam main bar extends through the PC member in the horizontal direction, and both ends thereof are fixed to the joint for connecting the beam main bar embedded in the PC joint panel member positioned at both ends of the PC member. PC member made,
  A method of joining PC column beams, in which a column main bar is embedded, and a PC column in which a column main bar coupling joint is embedded at least at the upper end of the column main bar,
  The PC member is horizontally mounted so that the beam main bar protruding from the end face of the PC beam to be joined to the PC joint panel member is inserted into the joint for connecting the beam main bar of the PC joint panel member. Moving in the direction and installing the one PC joint panel member on the PC pillar on the lower floor;
  Fixing the beam main reinforcement inserted into the joint;
  The column main bar of the PC column on the upper floor or the relay bar to be connected to the column main bar is inserted into the through hole of the PC joint panel member from above to penetrate the PC joint panel member, and the PC And a step of fixing to the joint embedded in the upper end portion of the column main reinforcement of the column.

A rectangular parallelepiped PC joint panel member having a vertical through-hole for inserting the column main reinforcement and the first and second PC beams extending from the PC joint panel member on both sides in the horizontal direction are integrated. A PC member, wherein the beam main bar extends through the PC member in a horizontal direction, and an end portion on the first PC beam side protrudes from an end surface of the first PC beam, and A PC member in which a joint for connecting beam main bars is embedded in the second PC beam at the end of the PC beam side of 2;
  The column main reinforcement was embedded, and a joint for connecting the column main reinforcement was embedded at least at the upper end of the column main reinforcement. A PC column beam joining method for joining a PC column,
  The main PC beam protruding from the end face of the first PC beam of the PC member is inserted into the joint embedded in the second PC beam of the PC member adjacent to the PC member. Moving the member in the horizontal direction and installing the PC joint panel member on the PC pillar on the lower floor;
  Fixing the beam main reinforcement inserted into the joint;
  A column main bar of the PC column on the upper floor or a relay bar to be connected to the column main bar is inserted into the through hole of the PC joint panel member from above to penetrate the PC joint panel member, and the PC And a step of fixing to the joint embedded in the upper end portion of the column main reinforcement of the column.

A PC column beam joining structure in which a PC beam and a PC column are joined by the method for joining PC column beams according to any one of claims 11 to 15.

Frame structure including a bonding structure of PC beam-column of at least any one of claims 1 to 10, 16.