JP2004308285A - Form for wall with beam - Google Patents

Form for wall with beam Download PDF

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JP2004308285A
JP2004308285A JP2003104569A JP2003104569A JP2004308285A JP 2004308285 A JP2004308285 A JP 2004308285A JP 2003104569 A JP2003104569 A JP 2003104569A JP 2003104569 A JP2003104569 A JP 2003104569A JP 2004308285 A JP2004308285 A JP 2004308285A
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wall
formwork
form part
retaining member
edge
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JP2003104569A
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JP4071142B2 (en
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Shinichi Sadohara
新一 佐渡原
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a form for a wall with a beam in which a side form portion, a beam bottom form portion, and a beam side wall portion are serially integrally formed into a single panel, to allow easy separation thereof from the wall and reduction in parts count, to contribute to simple and easy construction/dismantling of a building, to improve working efficiency, to shorten construction period, and to reduce construction costs. <P>SOLUTION: In the form for the wall with the beam of the wall form portion 1 for molding the wall W, and the beam bottom form portion 2 and the beam side wall portion 3 for molding the beam H are serially integrally formed. The form consists of a form main body P1 for the wall with the beam, and a shape retaining member 9. The form main body P1 for the wall with a beam is formed by gradually lowering an upper surface 8 of the beam bottom form portion 2 from an edge 8a of the side the beam side form portion 3 to an edge 8b of the side to the wall form portion 1. The shape retaining member 9 is mounted on the upper surface 8 of the beam bottom form portion 2 so as to conform to the same such that its one side surface b is serially arranged along an inner side surface 10 of the wall form portion 1 and flush with the same, and that its upper surface c is arranged so as to cross the one side surface b almost at right angles to the same. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、壁の上端部に沿って梁が一体に設けられた梁付き壁をコンクリートを打設して構築する際に使用される梁付き壁用型枠に関するものである。
【0002】
【従来の技術】
従来、例えば多層コンクリート構造物にあって、各階の壁、特にその上端部に沿って梁が一体に設けられる壁を構築する場合、まず、壁に鉄筋を配筋した後、建物の内側に位置する壁型枠、柱型枠の他、梁底型枠、梁側型枠を順次構築し、次に、建物の外側に位置する壁側型枠、柱型枠、梁側型枠などを構築するようにしている。また、これらを解体するときは、柱、梁、壁などの各側型枠を順に解体する(例えば、特許文献1参照。)。
【0003】
【特許文献1】
特開2002−250130号公報(第3−4頁、図1)
【0004】
【発明が解決しようとする課題】
前記特許文献1のように、型枠を構築するには、梁付き壁の両面にそれぞれの部位に対応させて区画された壁型枠、梁底型枠、梁側型枠など多くの型枠を接続して取り付けるようにしている。なぜならば、梁は、通常、その底面が壁面に対してほぼ直角に交わっており、その側面が同じ底面に対してほぼ直角に交わっていることから、壁面から梁の側面までそれらの面に沿わせて屈曲した型枠を一体に成形すると、解体時に非常に剥がしずらいからである。
【0005】
更に、詳しく説明すると、前記屈曲した型枠を剥がす場合、梁の上側から剥がすことになるが、通常、型枠には一定の厚みがあり、しかも、壁に対応する型枠の下端、すなわち、その型枠の外側下端、を中心として回動することになる。ところが、前記回動中心から梁の底面までの距離より前記回動中心から壁に対応する型枠の内側上端までの距離の方が長い関係上、型枠の回動途中で型枠の内側上端が梁の底面に支えて、型枠がそれ以上剥がれないか、剥がし難い。このような事情から、梁付き壁の両面にそれぞれの部位に対応させて区画された壁型枠、梁底型枠、梁側型枠など多くの型枠を接続して取り付けねばならないので、その構築・解体作業には面倒で多くの手間と時間が掛かり作業能率が極めて悪く、しかも、作業者も多く必要となるばかりか工期も長引き、施工コストも高くなるという課題が有る。また、余りに多くのしかも多種の型枠があることから、その管理・移動が非常に煩雑になるという課題もある。
【0006】
そこで、本発明は上記課題に鑑みてなされたもので、屈曲した型枠を連続して一体に成形し、一枚のパネル状としても脱枠可能とし、これにより型枠の点数を減らし、構築・解体作業を簡略化すると共に作業能率の向上を図り、工期の短縮、施工コストの低廉を可能とした梁付き壁用型枠を提供することを目的とするものである。
【0007】
【課題を解決するための手段】
かかる目的を達成するため、本発明に係る梁付き壁用型枠は、壁を成形するための壁型枠部と梁を成形するための梁底型枠部及び梁側型枠部とが連続して一体に成形され、前記梁底型枠部の上面が前記梁側型枠部側の端縁から前記壁型枠部側の端縁に亘って漸次低くなる梁付き壁用型枠本体と、前記梁底型枠部の上面に載置され、一側面が前記壁型枠部の内側面と連なって面一となると共に上面が前記一側面とほぼ直角に交わる保形部材と、からなる。
【0008】
そこで、梁付き壁用型枠を構築してコンクリートを打設した後に、梁付き壁用型枠本体を剥がす場合、梁底型枠部の上面は、梁側型枠部側の端縁から壁型枠部側の端縁に亘って漸次低くなるようになっており、壁型枠部の内側上端が梁の底面の一番低い位置にあるので、壁型枠部の外側下端を中心として梁付き壁用型枠本体を何ら支えることなく外側へ回動して引き剥がし脱枠できる。また、保形部材は、前記梁底型枠部の上面に載置した状態で、一側面が前記壁型枠部の内側面と連なって面一となり、上面が前記一側面とほぼ直角に交わっているので、壁の上端部には、底面が壁と直角に交わる梁が成形される。
【0009】
これにより、コンクリート打設後の構築・解体作業が格段に向上し、更には、梁付き壁用型枠本体のまま移動できることから、多層階のビルの構築作業が迅速に行なえることになる。また、特に保形部材と梁底型枠部との接触面はコンクリートが張り付くことがないから、梁付き壁用型枠本体を容易に分離でき、その解体がスムーズに行なえる。また、前記梁付き壁用型枠本体における壁型枠部は、その下端が床面にほぼ達しているようにすることが好ましく、これにより梁付き壁用型枠本体が一枚のパネル状に成形でき、その構築・解体作業が、簡略化でき、作業能率が上がる。ただ、一枚程度であれば、壁用型枠部の下方に縦寸法の異なる壁用型枠部を継足して接続するようにしても良い。
【0010】
本発明に係る梁付き壁用型枠の他の構成としては、壁を成形するための壁型枠部と梁を成形するための梁底型枠部及び梁側型枠部とが連続して一体に成形され、前記梁底型枠部の上面が前記壁型枠部の内側面とほぼ直角に交わる平坦面に成形される梁付き壁用型枠本体と、前記梁底型枠部の上面に合致するようにして載置され、上下に重ねられる一対の分割部材から構成され、一側面が前記壁型枠部の内側面と連なって面一となると共に上面が前記一側面とほぼ直角に交わって前記梁側型枠部の内側面に達し、また、前記両分割部材の重ね面が前記梁側型枠部側の端縁から前記壁型枠部側の端縁に亘って漸次低くなる保形部材と、からなる構成が採られる。
【0011】
【発明の実施の形態】
以下、本発明に係る梁付き壁用型枠の実施の形態を図面に基づき説明する。なお、本実施の形態においては、壁の上端部に沿って一側にのみ梁が設けられる梁付き壁を構築する場合を説明するが、梁が壁の上端部の両側に設けられている梁付き壁にあっても構築できること勿論である。図1は本発明に係る梁付き壁用型枠の斜視図、図2は壁用型枠の斜視図である。図1に示すように、梁付き壁用型枠Pは、梁付き壁用型枠本体P1と後記する保形部材9とから構成される。
【0012】
前記梁付き壁用型枠本体P1は、後記する壁Wを成形するための壁型枠部1と後記する梁Hを成形するための梁底型枠部2及び梁側型枠部3とが連続して一体に成形され、一枚のパネル状をなす。この梁付き壁用型枠本体P1は、例えば、横が1000mm、縦が2700mm、厚みが100mmの寸法を有し、上部が屈曲した縦長方形状の金属製の外枠4内に、それぞれ所定の間隔離して縦外枠4aまたは横外枠4bに平行な縦桟5a、横桟5bが複数本配設されている。前記縦外枠4aは横断面がコ字型をなすように成形され、各縦桟5aは横断面がL字状に成形される。そして、外枠4の一側面に壁型枠部1と梁底型枠部2と梁側型枠部3とに対応させ、それぞれベニヤ板6a,6b,6cが連なるようにして張設される。各ベニヤ板6a,6b,6cは、各縦桟5a,5aに設けられた通孔(図示せず。)を介し螺子12を螺締めして固定される。また、壁型枠部1に対応するベニヤ板6aには、両側上下部に後記する締付ボルト21を挿通するためのボルト挿通孔7が開設されている。
【0013】
前記梁底型枠部2の上面、すなわち、そのベニヤ板6bの上面8は、梁付き壁用型枠本体P1を床面にほぼ垂直に起立させたとき、梁側型枠部3側の端縁8aから壁型枠部1側の端縁8bに亘って直線的にかつ漸次低くなるように成形されている。換言すると、前記梁底型枠部2の上面8は、壁型枠部1側へ下向き傾斜している。その傾斜角度は、水平面に対し通常5度〜45度の範囲内であって、しかも、梁付き壁用型枠本体P1が生コンクリートを打設した後に脱枠可能な範囲で選択される。そして、この上面8には、解体作業を容易に行なうための保形部材9が載置される。この保形部材9は、例えば、木製または硬い合成樹脂製または金属製が選ばれ、梁付き壁用型枠本体P1の横幅とほぼ同じ長さ寸法を有する長板状に成形される。また、その横断面は直角三角形をなし、その三辺の内最も長い傾斜面となる重ね面aが梁底型枠部2の上面8に合致して載置される。そして、その一側面bが壁型枠部1の内側面、すなわち、そのベニヤ板6aの内側面10と連なって面一となると共にその上面cが内側面10とほぼ直角に交わって前記梁側型枠部2の内側面、すなわち、そのベニヤ板6cの内側面11に達するようになっている。これにより、保形部材9の上面cは、ほぼ水平に設定される。
【0014】
壁用型枠P2は、梁付き壁用型枠本体P1とほぼ同じ大きさ、高さを有し、また、梁付き壁用型枠本体P1と同様に、縦長方形状の金属製の外枠13の内側に、それぞれ所定の間隔離して縦外枠13aまたは横外枠13bに平行な縦桟14a、横桟14bが複数本配設されている。そして、外枠13の一側面に一枚のベニヤ板15が張設されている。前記各縦外枠13aも横断面がコ字型をなすように成形され、各縦桟14aも横断面がL字状に成形される。前記ベニヤ板15は各縦桟14aに設けられた通孔(図示せず。)を介して螺子12を螺締めして固定される。また、このベニヤ板15に、梁付き壁用型枠本体P1の各ボルト挿通孔7に対応位置させて締付ボルト21を挿通するためのボルト挿通孔16が開設されている。
【0015】
前記梁付き壁用型枠Pと壁用型枠P2は、上記構成からなり、次に構築・解体方法について説明する。まず、梁付き壁用型枠本体P1と壁用型枠P2は、図3に示すように、いずれも、例えば5枚を一セットとして組み立てられる。すなわち、各梁付き壁用型枠本体P1と壁用型枠P2はそれぞれ同じ向きで横方向に連続して配置され、各梁付き壁用型枠本体P1にあっては、隣り合う縦外枠4a,4a同士が、その上下部に配置された挟着具17により強固に挟着される。この挟着具17は、図4に示すように平面コ字型の主杆17aと平面L型の副杆17bとからなり、主杆17aの一端に設けられた螺子部18に副杆17bの一端に設けられた環状筒部19を挿通すると共にその外側からナット20を螺締めすることにより、主杆17aの他端と副杆17bの他端との隙間が広狭自在に調節できるようになっている。そして、前記主杆17aの先端と副杆17bの先端とで前記両縦外枠4a,4aをその外側から挟むように締付けて一体に固定する。前記各壁用型枠P2の両縦外枠13a,13a同士も前記と全く同じ方法で挟着する。
【0016】
このようにして、組み立てられた梁付き壁用型枠群A1と壁用型枠群A2は、必要枚数を例えば施工現場であるビルの所定の階の床面に配置される。この場合、梁付き壁用型枠群A1や壁用型枠群A2は、いずれもクレーン(図示せず。)のワイヤーで吊り上げて運ばれる。そして、梁付き壁を施工する位置に前記梁付き壁用型枠群A1と壁用型枠群A2とを互いにベニヤ板6a〜6cとベニヤ板15とが向き合うようにして、かつ、所定の間隔離して平行に配置する。更に、図5に示すように、各ボルト挿通孔7,16に締付ボルト21を挿通する。この際、両ベニヤ板6aとベニヤ板15との間に、円筒状のスペーサー22を介在させて前記締付ボルト21を挿通させるようにする。これにより、梁付き壁用型枠群A1と壁用型枠群A2との間隔がしっかりと保持され、また、生コンクリートを打ち込みこれが固まった後も、締付ボルト21がコンクリートに接触しないことから、容易に抜けて解体が容易に行なえる。
【0017】
前記締付ボルト21は、一端に頭部21aが設けられ、他端側の外周面には螺子部21bが設けられている。そして、締付ボルト21の頭部21a側に大径のワッシャ23を嵌め、図5に示すように壁用型枠P2の縦外枠13aに開設されたボルト挿通孔24、ベニヤ板15のボルト挿通孔16、スペーサー22、梁付き壁用型枠本体P1のベニヤ板6a、縦外枠4aにそれぞれ開設されたボルト挿通孔7,24に順に挿通する。また、他端の螺子部21b側にも前記と同じワッシャ23を嵌め、更に、その外側から螺子部21bにナット25を螺締する。前記各ワッシャ23は、隣接する壁用型枠P2または梁付き壁用型枠本体P1の隣接する縦外枠4a,4aまたは縦外枠13a,13aまで覆う直径を有し、これにより、隣接する互いの縦外枠4a,4aまたは縦外枠13a,13aの外側面が面一となり、締付ボルト21の長手方向における位置ずれがなくなる。
【0018】
前記各梁付き壁用型枠本体P1における梁底型枠部2の上面8に、図3に示すように保形部材9を合致するようにして載置する。この場合、各保形部材9の上面cは水平面となり、一側面bは、壁型枠部1の内側面10と同一面となる。そして、梁付き壁用型枠群A1、壁用型枠群A2が構築された後は、その間に生コンクリートが打設される。打設後は所定の期間生コンクリートの養生がなされ、コンクリートが乾燥し固まれば解体作業が行われる。
【0019】
そこで、まず、前記ナット25を外して、各締付ボルト21を抜く。各挟着具17はそのまま取り付けておく。そして、各壁型枠部1の外側下端O1を中心とし各梁付き壁用型枠本体P1を図6実線に示すように外側へ回動して引き剥がす。この際、梁底型枠部2の上面8は、梁側型枠部3側の端縁8aから壁型枠部1側の端縁8b(壁型枠部1の内側上端O2と同じ。)に亘って直線的に漸次低くなるようになっており、しかも、壁型枠部1の内側上端O2が梁Hの底面h1の一番低い位置にある。よって、壁型枠部1の外側下端O1を中心として梁付き壁用型枠本体P1を外側へ回動しても、前記壁型枠部1の内側上端O2が支えることはなく、その回動動作が行なえることとなり、脱枠が可能となる。
【0020】
また、保形部材9は、前記梁底型枠部2の上面8に載置した状態で、一側面bが前記壁型枠部1の内側面10と連なって面一となり、上面cが前記一側面bとほぼ直角に交わって前記梁側型枠部3の内側面11に達するようにしているので、壁Wの上端部には、底面h1が壁Wと直角に交わり、側面h2がその底面h1と直角に交わるようにして梁Hが成形される。なお、前記保形部材9の上面cは、必ずしも梁側型枠部3の内側面11に達している必要はない。また、保形部材9の重ね面aと梁底型枠部2の上面8とはコンクリートが張り付くことがないから、各梁付き壁用型枠本体P1を容易に分離でき、その解体がスムーズに行なえることになる。
【0021】
そして、その後に各保形部材9を梁Hの底面h1から剥がして取り外す。同様に、壁用型枠群A2も外側下端を中心とし回動させて引き剥がす。これにより、梁付き壁Dが成形される。なお、床を成形するスラブ底型枠や柱を成形する柱型枠もこの作業と共に行なわれるが、図示は省略する。
【0022】
前記解体した各梁付き壁用型枠群A1や壁用型枠群A2は、クレーン(図示せず。)のワイヤーで吊り下げてそのまま上層階へ移動させ、次の梁付き壁を成形するための型枠を構築する。このようにして、各階毎に型枠を構築し生コンクリートを打設して順次梁付き壁Dが成形されることとなる。この場合、梁付き壁用型枠本体P1が、壁型枠部と梁底型枠部と梁側型枠部とを連続して一体に成形し一枚のパネル状に成形されているので、これらを横に連結するのみで型枠が構築でき、作業が極めて迅速にできる。
【0023】
図7乃至図8は、他の実施の形態に係る梁付き壁用型枠P3を示すものである。なお、本実施の形態と同一部位は同一番号を付すことにより詳しい説明は省略する。この梁付き壁用型枠P3は、梁付き壁用型枠本体P4と後記する保形部材9とからなる。梁付き壁用型枠本体P4は、壁Wを成形するための壁型枠部31と梁Hを成形するための梁底型枠部32及び梁側型枠部33とが連続して一体に成形され一枚のパネル状をなす。そして、上部が屈曲した縦長方形状の金属製の外枠34内に、それぞれ所定の間隔離して縦外枠34aまたは横外枠34bに平行な縦桟35a、横桟35bが複数本配設されている。前記縦外枠34aは横断面がコ字型に成形され、各縦桟35aは横断面がL字状に成形される。また、外枠34の一側面に各壁型枠部31と梁底型枠部32と梁側型枠部33とに対応させ、それぞれベニヤ板36a,36b,36cが連なるようにして張設される。ただ、前記梁底型枠部32の上面、すなわち、そのベニヤ板36bの上面38は、壁型枠部31の内側面40とほぼ直角に交わるようになっている。
【0024】
また、前記梁底型枠部32の上面38には、保形部材9である同じ形状の一対の分割部材9a,9aが載置される。これら分割部材9a,9aも、例えば、木製または硬い合成樹脂製または金属製が選ばれ、梁付き壁用型枠本体P4の横幅とほぼ同じ長さ寸法を有した長板状に成形される。そして、その横断面はそれぞれ直角三角形をなし、その三辺の内、最も長い傾斜面となる重ね面dが互いに対向するようにし、上下に重ねた状態では、その横断面形状が横長の長方形になるようになっている。しかも、このとき、上部の分割部材9aの一側面eが壁型枠部31の内側面40と連なって面一となると共に上面fが前記一側面eとほぼ直角に交わって前記梁側型枠部33の内側面であるベニヤ板36cの内側面41に達し、ほぼ水平に保たれている。また、前記両分割部材9a,9aの重ね面dが、前記梁側型枠部33側の端縁38aから前記壁型枠部31側の端縁38bに亘って直線的に漸次低くなる。
【0025】
このように成形される梁付き壁用型枠P3も壁用型枠P2と一緒に使用され、本実施の形態と同様に、図3に示したように、例えば、いずれも5枚を一セットとして組み立てられる。これら、梁付き壁用型枠群A3と壁用型枠群A2の連結構造、連結方法は、本実施の形態と同様であって詳しい説明は省略する。そして、本実施の形態と同様に梁付き壁用型枠群A3と壁用型枠群A2は、必要枚数を例えば施工現場であるビルの所定の階の床面に配置され、前記各梁付き壁用型枠本体P4における梁底型枠部32の上面38に、一対の分割部材9a,9aを載置する。この場合、上部の分割部材9aの上面fは水平面となる。そして、梁付き壁用型枠群A3、壁用型枠群A2が構築された後は、その間に生コンクリートを打設して、所定の期間養生する。このようにして、コンクリートが乾燥し固まれば、本実施の形態と同様にして解体作業を行なう。
【0026】
この場合も、壁型枠部31の外側下端O1を中心とし、図8実線に示すように梁付き壁用型枠本体P4を外側へ回動して引き剥がす。この際、上下の分割部材9a,9aの互いの重ね面dは壁型枠部31側に下向き下傾し、下部の分割部材9aの下端、すなわち壁型枠部31の内側上端O2、が重ね面dの一番低い位置にあるので、その重ね面dで上部と下部の分割部材9a,9aが分離されるも、その脱枠が何ら障害なく容易に行なえることになる。そして、その後に残った上部の各分割部材9aを引き剥がして取り外す。同様に、壁用型枠群A2も外側下端を中心とし回動させて引き剥がす。これにより、梁付き壁Wが成形される。
【0027】
なお、壁W上部の両側に梁Hを設ける場合は、本実施の形態に係る梁付き壁用型枠群A1または他の実施の形態に係る梁付き壁用型枠群A3をそれぞれ互いにベニヤ板6a〜6cまたはベニヤ板36a〜36cが対向するように配置して構築すればよい。この場合も本発明が適用できる。
【0028】
【発明の効果】
以上説明したように、本発明に係る梁付き壁用型枠は、壁型枠部と梁底型枠部と梁側型枠部とを連続して一体に成形すると共に梁底型枠部の上面を梁側型枠部側の端縁から壁型枠部側の端縁に亘って漸次低くなるようにし、また、前記梁底型枠部の上面に保形部材を載置するようにしたので、梁付き壁用型枠を一枚のパネル状としても、梁付き壁用型枠の解体時に壁型枠部の内側上端が梁の底面に支えるといったことがなく、容易に脱枠できることとなる。これにより、壁型枠部と梁底型枠部と梁側型枠部とを連続して一体に成形した梁付き壁用型枠が使用でき、しかも、横に並べて同時に上層階に運ぶこともできることとなり、型枠の構築・解体作業が簡略化されると共に作業能率の格段の向上が図られ、工期の短縮、施工コストの低廉も可能となるといった有益な効果がある。
【0029】
また、保形部材と梁底型枠部との接触面はコンクリートが張り付くことがないから、梁付き壁用型枠を容易に分離でき、その解体がスムーズに行なえることになる。
【0030】
梁底型枠部の内側面を壁型枠部の内側面とほぼ直角に交わるようにすると共に保形部材を上下に重合して配置される一対の分割部材により成形するようにし、この保形部材は、一側面が壁型枠部の内側面と連なって面一となると共に上面が前記一側面とほぼ直角に交わって梁側型枠部の内側面に達し、また、前記両分割部材の重ね面が梁側型枠部側の端縁から壁型枠部側の端縁に亘って漸次低くなる構成としても本発明と同等の効果が得られる。
【図面の簡単な説明】
【図1】本発明に係る梁付き壁用型枠の斜視図。
【図2】壁用型枠の斜視図。
【図3】梁付き壁用型枠群と壁用型枠群との組立斜視図。
【図4】同挟着具部位の平面断面図。
【図5】同締付ボルト部位の平面断面図。
【図6】脱枠する状態を示す要部の側面断面図。
【図7】他の実施の形態に係る梁付き壁用型枠の斜視図。
【図8】同脱枠する状態を示す要部の側面断面図。
【符号の説明】
1 壁型枠部
2 梁底型枠部
3 梁側型枠部
8 上面
8a 端縁
8b 端縁
9 保形部材
9a 分割部材
10 内側面
11 内側面
P 梁付き壁用型枠
P1 梁付き壁用型枠本体
P3 梁付き壁用型枠
P4 梁付き壁用型枠本体
D 梁付き壁
H 梁
W 壁
b 一側面
c 上面
d 重ね面
[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a formwork for a beam-equipped wall that is used when a concrete beam is used to construct a beam-equipped wall provided integrally with a beam along an upper end portion of the wall.
[0002]
[Prior art]
Conventionally, for example, in the case of a multi-layer concrete structure, when constructing a wall of each floor, particularly a wall in which a beam is integrally provided along the upper end thereof, first, a reinforcing bar is arranged on the wall, and then the reinforcing bar is positioned inside the building. In addition to the wall form and the column form, the beam form, the beam form and the beam form that are located outside the building are constructed. I am trying to do it. Further, when disassembling these, each side form such as a pillar, a beam, a wall, and the like is dismantled sequentially (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-2002-250130 (page 3-4, FIG. 1)
[0004]
[Problems to be solved by the invention]
As described in Patent Document 1, many forms such as a wall form, a beam bottom form and a beam side form are divided on both sides of a wall with a beam so as to correspond to respective portions. Is connected and installed. Because beams typically have their bottoms intersected approximately at right angles to the wall surface and their sides intersect approximately at right angles to the same bottom surface, they follow along those surfaces from the wall surface to the side surfaces of the beam. This is because if the bent formwork is integrally formed, it is very difficult to peel it off during disassembly.
[0005]
More specifically, when the bent form is to be peeled, the form is to be peeled from the upper side of the beam, but usually, the form has a certain thickness, and the lower end of the form corresponding to the wall, that is, It turns around the outer lower end of the form. However, since the distance from the center of rotation to the inner upper end of the formwork corresponding to the wall is longer than the distance from the center of rotation to the bottom surface of the beam, the inner upper end of the formwork during the rotation of the formwork. Is supported on the bottom of the beam, and the formwork is not peeled off any more or is difficult to peel off. Under such circumstances, many formwork such as wall formwork, beam bottom formwork, beam side formwork, etc., must be connected and attached on both sides of the wall with beam, corresponding to each part, The construction and disassembly work is troublesome, takes a lot of time and labor, is extremely inefficient, and has a problem that not only many workers are required but also the construction period is prolonged and the construction cost is increased. In addition, since there are too many and many types of molds, there is also a problem that management and movement thereof are very complicated.
[0006]
In view of the above, the present invention has been made in view of the above-described problem, and the bent formwork is continuously formed integrally, so that the formwork can be removed even as a single panel. An object of the present invention is to provide a formwork for a wall with a beam that simplifies dismantling work, improves work efficiency, shortens the construction period, and reduces the construction cost.
[0007]
[Means for Solving the Problems]
In order to achieve such an object, the wall formwork with a beam according to the present invention is characterized in that a wall form part for forming a wall, a beam bottom form part for forming a beam, and a beam side form part are continuous. And a beam form body with a beam, wherein the upper surface of the beam bottom form part gradually lowers from the edge on the beam side form part side to the edge on the wall form part side. A shape-retaining member that is placed on the upper surface of the beam-bottomed formwork, one side surface of which is flush with the inner surface of the wall formwork portion, and whose upper surface intersects the one side surface at a substantially right angle. .
[0008]
Therefore, when the formwork for the wall with beams is constructed and concrete is cast, and then the body of the formwork for the walls with beams is peeled off, the upper surface of the beam-bottom formwork is formed from the edge on the beam-side formwork side. The lower end of the wall form part is located at the lowest position of the bottom of the beam, so that the lower end of the wall form part is centered on the outer lower end of the wall form part. It can be pivoted outward without any support of the attached wall formwork body, peeled off and removed. Further, in a state where the shape-retaining member is placed on the upper surface of the beam bottom form portion, one side surface is connected to the inner side surface of the wall form portion to be flush, and the upper surface intersects the one side surface at a substantially right angle. Therefore, a beam whose bottom surface crosses the wall at right angles is formed at the upper end of the wall.
[0009]
As a result, the construction and demolition work after concrete placement is significantly improved, and furthermore, since the wall formwork body with beams can be moved as it is, the construction work of a multi-story building can be performed quickly. In addition, since the concrete does not stick to the contact surface between the shape retaining member and the beam bottom form part, the beam form body with a beam can be easily separated, and the disassembly can be performed smoothly. In addition, it is preferable that the lower end of the wall form part in the beam form body with a beam substantially reaches the floor surface, whereby the wall form body with a beam becomes one panel. It can be molded, its construction and disassembly work can be simplified, and work efficiency is improved. However, if there is only one sheet, a wall form having different vertical dimensions may be added below and connected to the wall form.
[0010]
As another configuration of the beam formwork with a beam according to the present invention, a wall formwork section for forming a wall, a beam bottom formwork section for forming a beam, and a beam side formwork section are continuously formed. A beam form body with a beam, which is integrally formed, and a top surface of the beam bottom form portion is formed into a flat surface substantially perpendicular to an inner surface of the wall form portion; and an upper surface of the beam bottom form portion It is composed of a pair of divided members that are placed so as to match with each other, and are vertically overlapped, and one side surface is continuous with the inner side surface of the wall form portion, and the upper surface is substantially perpendicular to the one side surface. Intersect and reach the inner side surface of the beam-side formwork, and the overlapping surface of the two divided members gradually decreases from the edge on the beam-side formwork side to the edge on the wall-formwork side. And a shape retaining member.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a formwork for a wall with a beam according to the present invention will be described with reference to the drawings. In the present embodiment, a case will be described in which a wall with a beam is provided on only one side along the upper end of the wall, but the beam is provided on both sides of the upper end of the wall. Needless to say, it can be constructed even on the attached wall. FIG. 1 is a perspective view of a wall formwork with beams according to the present invention, and FIG. 2 is a perspective view of the wall formwork. As shown in FIG. 1, the beam-forming wall form P is composed of a beam-forming wall form body P <b> 1 and a shape retaining member 9 described later.
[0012]
The beam form body P1 with a beam includes a wall form part 1 for forming a wall W described later, a beam bottom form part 2 and a beam side form part 3 for forming a beam H described later. It is continuously and integrally molded to form a single panel. For example, the beam form body P1 with a beam has dimensions of 1000 mm in width, 2700 mm in length, and 100 mm in thickness, and a predetermined rectangular rectangular outer metal frame 4 having a bent upper portion. A plurality of vertical rails 5a and horizontal rails 5b are arranged parallel to the vertical outer frame 4a or the horizontal outer frame 4b while being separated from each other. The vertical outer frame 4a is formed so that its cross section has a U-shape, and each of the vertical bars 5a is formed into an L-shaped cross section. Then, the veneer plates 6a, 6b, and 6c are stretched on one side surface of the outer frame 4 so as to correspond to the wall form section 1, the beam bottom form section 2, and the beam side form section 3, respectively. Each plywood plate 6a, 6b, 6c is fixed by screwing a screw 12 through a through hole (not shown) provided in each vertical rail 5a, 5a. The veneer plate 6a corresponding to the wall form 1 is provided with bolt insertion holes 7 at the upper and lower portions on both sides for inserting fastening bolts 21 to be described later.
[0013]
The upper surface of the beam bottom form part 2, that is, the upper surface 8 of the plywood plate 6b, has the edge on the beam side form part 3 side when the beam form body P1 with beams is erected substantially perpendicularly to the floor surface. It is formed so as to be linear and gradually lower from 8a to the edge 8b on the wall form 1 side. In other words, the upper surface 8 of the beam bottom form part 2 is inclined downward toward the wall form part 1. The inclination angle is usually in the range of 5 degrees to 45 degrees with respect to the horizontal plane, and is selected within a range in which the beam-molded wall form body P1 can be removed from the frame after placing the ready-mixed concrete. Then, on this upper surface 8, a shape-retaining member 9 for easily performing dismantling work is placed. The shape-retaining member 9 is made of, for example, wood or hard synthetic resin or metal, and is formed into a long plate shape having a length substantially equal to the width of the beam-form wall main body P1. The cross section is a right-angled triangle, and the overlapping surface a, which is the longest inclined surface among the three sides, is placed in conformity with the upper surface 8 of the beam bottom form part 2. The one side surface b is flush with the inner surface of the wall form part 1, that is, the inner surface 10 of the plywood plate 6a, and the upper surface c intersects the inner surface 10 substantially at a right angle. The inner surface of the frame portion 2, that is, the inner surface 11 of the plywood 6c is reached. Thereby, the upper surface c of the shape retaining member 9 is set substantially horizontal.
[0014]
The wall form P2 has substantially the same size and height as the beam form main body P1, and, like the beam form main body P1, has a vertically rectangular metal outer frame. A plurality of vertical bars 14a and horizontal bars 14b are provided inside the interior of the frame 13 and are separated from each other by a predetermined distance and are parallel to the vertical outer frame 13a or the horizontal outer frame 13b. One plywood plate 15 is stretched on one side surface of the outer frame 13. Each of the vertical outer frames 13a is also formed so that its cross section has a U-shape, and each of the vertical bars 14a is also formed into an L-shaped cross section. The plywood plate 15 is fixed by screwing the screw 12 through a through hole (not shown) provided in each vertical bar 14a. Further, a bolt insertion hole 16 for inserting the tightening bolt 21 is formed in the veneer plate 15 at a position corresponding to each bolt insertion hole 7 of the beam form body P1 with a beam.
[0015]
The wall form P with beams and the wall form P2 have the above-described configuration. Next, a method of building and disassembling will be described. First, as shown in FIG. 3, each of the beam form body P1 for a wall with a beam and the wall form P2 is assembled as a set of, for example, five pieces. That is, each of the beam form bodies P1 with a beam and the wall form P2 are continuously arranged in the same direction in the horizontal direction, and in each of the wall form bodies P1 with a beam, the adjacent vertical outer frames are provided. 4a, 4a are firmly clamped by clamps 17 arranged at the upper and lower portions thereof. As shown in FIG. 4, the clamp 17 includes a flat U-shaped main rod 17a and a flat L-shaped auxiliary rod 17b, and a screw portion 18 provided at one end of the main rod 17a has an auxiliary rod 17b. The gap between the other end of the main rod 17a and the other end of the sub-rod 17b can be freely adjusted by screwing the nut 20 from the outside while inserting the annular tubular portion 19 provided at one end. ing. Then, the two vertical outer frames 4a, 4a are fastened and fixed integrally by sandwiching the two vertical outer frames 4a, 4a from outside thereof with the tip of the main rod 17a and the tip of the sub-rod 17b. Both vertical outer frames 13a, 13a of each of the wall forms P2 are clamped in the same manner as described above.
[0016]
The required number of the beam formwork group A1 and the wall formwork group A2 assembled in this manner are arranged, for example, on the floor of a predetermined floor of a building at the construction site. In this case, the beam form wall group A1 and the wall form group A2 are both lifted and carried by the wire of a crane (not shown). Then, the beam-forming wall formwork group A1 and the wall-forming formwork group A2 are separated from each other by a predetermined distance so that the veneer plates 6a to 6c and the veneer plate 15 face each other at a position where the wall with beam is to be constructed. Place them in parallel. Further, as shown in FIG. 5, a tightening bolt 21 is inserted into each of the bolt insertion holes 7 and 16. At this time, the fastening bolt 21 is inserted between the two plywood plates 6a and the plywood plate 15 with a cylindrical spacer 22 interposed therebetween. As a result, the interval between the beam formwork group A1 and the wall formwork group A2 is firmly maintained, and the fastening bolt 21 does not come into contact with the concrete even after the fresh concrete has been driven in and hardened. It can be easily disassembled and easily dismantled.
[0017]
The tightening bolt 21 has a head 21a at one end and a screw portion 21b on the outer peripheral surface at the other end. Then, a large-diameter washer 23 is fitted to the head 21a side of the tightening bolt 21, and as shown in FIG. 5, the bolt insertion hole 24 formed in the vertical outer frame 13a of the wall form P2 and the bolt insertion of the plywood 15 are formed. The holes 16, the spacers 22, the veneer plate 6 a of the beam form wall body P 1 with beams, and the bolt insertion holes 7 and 24 formed in the vertical outer frame 4 a are sequentially inserted. Also, the same washer 23 as described above is fitted to the screw portion 21b side at the other end, and a nut 25 is further screwed to the screw portion 21b from outside. Each said washer 23 has a diameter which covers up to the adjacent vertical outer frame 4a, 4a or the vertical outer frame 13a, 13a of the adjacent wall form P2 or the beam form main body P1 with beams, and thereby, is adjacent. The outer surfaces of the vertical outer frames 4a, 4a or the vertical outer frames 13a, 13a are flush with each other, so that there is no displacement of the tightening bolt 21 in the longitudinal direction.
[0018]
As shown in FIG. 3, a shape retaining member 9 is placed on the upper surface 8 of the beam bottom form part 2 of each of the beam form bodies P1 with beams so as to match. In this case, the upper surface c of each shape retaining member 9 is a horizontal plane, and one side surface b is the same plane as the inner side surface 10 of the wall form 1. Then, after the beam form wall group A1 and the wall form group A2 are constructed, ready-mixed concrete is poured in the meantime. After the casting, the ready-mixed concrete is cured for a predetermined period, and when the concrete dries and hardens, the concrete is dismantled.
[0019]
Therefore, first, the nut 25 is removed, and each tightening bolt 21 is removed. Each clip 17 is attached as it is. Then, each of the wall-forming frame main bodies P1 is pivoted outward around the outer lower end O1 of each of the wall forming parts 1 as shown in FIG. At this time, the upper surface 8 of the beam bottom form part 2 extends from the edge 8a on the beam side form part 3 side to the edge 8b on the side of the wall form part 1 (the same as the inner upper end O2 of the wall form part 1). , And the inner upper end O2 of the wall form 1 is at the lowest position of the bottom surface h1 of the beam H. Therefore, even if the main body P1 for walls with beams is pivoted outward about the outer lower end O1 of the wall form part 1, the inner upper end O2 of the wall form part 1 is not supported, and the pivoting thereof is performed. The operation can be performed, and the frame can be removed.
[0020]
When the shape retaining member 9 is placed on the upper surface 8 of the beam bottom form part 2, one side surface b is continuous with the inner side surface 10 of the wall form part 1, and the upper surface c is the same. Since it crosses at a right angle to one side surface b and reaches the inner side surface 11 of the beam-side formwork 3, the bottom surface h1 intersects the wall W at a right angle at the upper end of the wall W, and the side surface h2 is The beam H is formed so as to intersect the bottom surface h1 at right angles. Note that the upper surface c of the shape retaining member 9 does not necessarily have to reach the inner side surface 11 of the beam-side formwork 3. Moreover, since the concrete does not stick to the overlapping surface a of the shape retaining member 9 and the upper surface 8 of the beam bottom form part 2, each beam form body P1 with beams can be easily separated, and the disassembly can be performed smoothly. I can do it.
[0021]
Then, each shape retaining member 9 is peeled off from the bottom surface h1 of the beam H and removed. Similarly, the wall form group A2 is also turned around the outer lower end and peeled off. Thereby, the wall D with a beam is formed. The slab bottom formwork for forming the floor and the column formwork for forming the columns are also performed together with this operation, but are not shown.
[0022]
Each of the dismantled wall formwork group A1 and wall formwork group A2 is suspended by wires of a crane (not shown) and moved to the upper floor as it is to form the next wall with beams. Build a formwork. In this way, the formwork is constructed for each floor, and the fresh concrete is cast, and the wall D with the beam is sequentially formed. In this case, since the beam form body P1 for a wall with a beam is formed integrally with the wall form section, the beam bottom form section, and the beam side form section continuously and in a single panel shape. The formwork can be constructed only by connecting these laterally, and the operation can be performed extremely quickly.
[0023]
7 and 8 show a form P3 for a wall with beams according to another embodiment. The same parts as those in the present embodiment are denoted by the same reference numerals, and detailed description is omitted. The beam-formed wall formwork P3 includes a beam-formed wall formwork body P4 and a shape retaining member 9 described later. In the beam form body P4 with a beam, a wall form part 31 for forming the wall W, a beam bottom form part 32 and a beam side form part 33 for forming the beam H are continuously and integrally formed. It is formed into a single panel. A plurality of vertical rails 35a and horizontal rails 35b parallel to the vertical outer frame 34a or the horizontal outer frame 34b are provided in the vertical rectangular metal outer frame 34 having a bent upper portion, respectively. ing. The vertical outer frame 34a has a U-shaped cross section, and each of the vertical bars 35a has an L-shaped cross section. Further, the veneer plates 36a, 36b, and 36c are stretched on one side surface of the outer frame 34 so as to correspond to the wall form sections 31, the beam bottom form sections 32, and the beam side form sections 33, respectively. . However, the upper surface of the beam bottom form part 32, that is, the upper surface 38 of the plywood plate 36 b intersects the inner side surface 40 of the wall form part 31 substantially at right angles.
[0024]
On the upper surface 38 of the beam bottom form part 32, a pair of divided members 9a, 9a having the same shape as the shape retaining member 9 are placed. These split members 9a, 9a are also made of, for example, wooden or hard synthetic resin or metal, and are formed into a long plate shape having substantially the same length as the width of the beam form body P4 with a beam. Each of the cross-sections forms a right-angled triangle, and the overlapping surfaces d, which are the longest slopes, of the three sides are opposed to each other. It is becoming. Moreover, at this time, one side surface e of the upper divided member 9a is continuous with the inner side surface 40 of the wall form part 31 and is flush with the one side surface e. It reaches the inner surface 41 of the plywood 36c, which is the inner surface of the part 33, and is kept substantially horizontal. Further, the overlapping surface d of the two divided members 9a, 9a linearly and gradually decreases from the edge 38a on the beam-side frame portion 33 side to the edge 38b on the wall-side frame portion 31 side.
[0025]
The beam-formed wall form P3 formed in this way is also used together with the wall form P2, and, like the present embodiment, as shown in FIG. Assembled as The connection structure and connection method between the beam form wall group A3 and the wall form group A2 are the same as in the present embodiment, and detailed description is omitted. As in the present embodiment, the required number of the beam formwork group A3 and the wall formwork group A2 are arranged, for example, on the floor of a predetermined floor of a building which is a construction site, and The pair of divided members 9a, 9a are placed on the upper surface 38 of the beam bottom form part 32 in the wall form body P4. In this case, the upper surface f of the upper division member 9a becomes a horizontal plane. Then, after the beam formwork group A3 and the wall formwork group A2 are constructed, ready-mixed concrete is poured in the meantime and cured for a predetermined period. In this way, when the concrete dries and hardens, the dismantling operation is performed in the same manner as in the present embodiment.
[0026]
Also in this case, the beam form body P4 with a beam is pivoted outward around the outer lower end O1 of the wall form portion 31 as shown in FIG. At this time, the overlapping surfaces d of the upper and lower divided members 9a, 9a are inclined downward to the wall form 31 side, and the lower end of the lower divided member 9a, that is, the inner upper end O2 of the wall form 31 is overlapped. Since the upper and lower divided members 9a, 9a are separated from each other at the overlapped surface d because they are at the lowest position of the surface d, the removal of the frame can be easily performed without any obstacle. Then, the remaining upper divided members 9a are peeled off and removed. Similarly, the wall form group A2 is also turned around the outer lower end and peeled off. Thereby, the wall W with a beam is formed.
[0027]
When the beams H are provided on both sides of the upper portion of the wall W, the beam-forming wall form group A1 according to the present embodiment or the beam-forming wall form group A3 according to the other embodiment is respectively attached to the plywood 6a. 6c or veneer plates 36a to 36c may be arranged and constructed so as to face each other. In this case, the present invention can be applied.
[0028]
【The invention's effect】
As described above, the beam form for a wall with a beam according to the present invention is formed by continuously and integrally forming the wall form part, the beam bottom form part, and the beam side form part with the beam form part. The upper surface was gradually lowered from the edge on the side of the beam-side mold section to the edge on the side of the wall form section, and a shape-retaining member was placed on the upper surface of the beam-bottom section. Therefore, even if the wall formwork with beams is made into a single panel, the inside upper end of the wall formwork does not support the bottom of the beam when dismantling the wall formwork with beams, and it can be easily removed. Become. As a result, it is possible to use a beam-formed wall form in which the wall form, the beam bottom form and the beam-side form are continuously and integrally formed, and can also be arranged side by side and simultaneously carried to an upper floor. As a result, the construction and dismantling work of the formwork is simplified, and the work efficiency is remarkably improved. This has a beneficial effect that the construction period can be shortened and the construction cost can be reduced.
[0029]
Moreover, since concrete does not stick to the contact surface between the shape retaining member and the beam bottom formwork, the wall formwork with beams can be easily separated, and the disassembly can be performed smoothly.
[0030]
The inner surface of the beam-bottom form part intersects the inner surface of the wall form part at a right angle, and the shape-retaining member is formed by a pair of divided members arranged in a vertically overlapping manner. The member has one side surface which is continuous with the inner side surface of the wall form part and is flush, and the upper surface reaches the inner side surface of the beam side form part substantially perpendicularly to the one side surface, and The same effect as that of the present invention can be obtained even when the overlapping surface is gradually reduced from the edge on the beam-side frame portion side to the edge on the wall-form frame portion side.
[Brief description of the drawings]
FIG. 1 is a perspective view of a formwork for a wall with a beam according to the present invention.
FIG. 2 is a perspective view of a wall formwork.
FIG. 3 is an assembled perspective view of a group of wall formwork with beams and a group of wall formwork.
FIG. 4 is a plan cross-sectional view of the clipping tool part.
FIG. 5 is a plan sectional view of the fastening bolt portion.
FIG. 6 is a side sectional view of a main part showing a state in which the frame is removed.
FIG. 7 is a perspective view of a wall formwork with beams according to another embodiment.
FIG. 8 is a side sectional view of a main part showing the state where the frame is removed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wall form part 2 Beam bottom form part 3 Beam side form part 8 Top surface 8a Edge 8b Edge 9 Shape retaining member 9a Dividing member 10 Inner side surface 11 Inner side surface P Beam form P1 for beams Formwork body P3 Formwork for beam with beam P4 Formwork body for beam with beam D Wall with beam H Beam W Wall b One side c Top surface d Stacking surface

Claims (2)

壁を成形するための壁型枠部と梁を成形するための梁底型枠部及び梁側型枠部とが連続して一体に成形され、前記梁底型枠部の上面が前記梁側型枠部側の端縁から前記壁型枠部側の端縁に亘って漸次低くなる梁付き壁用型枠本体と、前記梁底型枠部の上面に載置され、一側面が前記壁型枠部の内側面と連なって面一となると共に上面が前記一側面とほぼ直角に交わる保形部材と、からなることを特徴とする梁付き壁用型枠。A wall form part for forming a wall, a beam bottom form part and a beam side form part for forming a beam are continuously and integrally formed, and an upper surface of the beam bottom form part is formed on the beam side. A beam form body with a beam gradually lowering from an end edge on the form section side to an end edge on the wall form section side, and placed on the upper surface of the beam bottom form section; A formwork member for a beam with a beam, comprising: a shape-retaining member that is continuous with the inner side surface of the formwork portion and that is flush with the upper surface and intersects the one side surface at substantially right angles. 壁を成形するための壁型枠部と梁を成形するための梁底型枠部及び梁側型枠部とが連続して一体に成形され、前記梁底型枠部の上面が前記壁型枠部の内側面とほぼ直角に交わる平坦面に成形される梁付き壁用型枠本体と、前記梁底型枠部の上面に合致するようにして載置され、上下に重ねられる一対の分割部材から構成され、一側面が前記壁型枠部の内側面と連なって面一となると共に上面が前記一側面とほぼ直角に交わって前記梁側型枠部の内側面に達し、また、前記両分割部材の重ね面が前記梁側型枠部側の端縁から前記壁型枠部側の端縁に亘って漸次低くなる保形部材と、からなることを特徴とする梁付き壁用型枠。A wall form part for forming a wall, a beam bottom form part and a beam side form part for forming a beam are continuously and integrally formed, and an upper surface of the beam bottom form part is formed of the wall form. A wall-shaped formwork body with a beam formed into a flat surface substantially perpendicular to the inner surface of the frame portion, and a pair of splits which are placed so as to match the upper surface of the beam-bottomed formwork portion and vertically stacked One side surface is continuous with the inner side surface of the wall form part and becomes flush, and the upper surface reaches the inner side surface of the beam side form part substantially perpendicularly to the one side surface, and A shape-retaining member in which the overlapping surface of the two divided members gradually decreases from the edge on the beam-form side to the edge on the wall-form side; frame.
JP2003104569A 2003-04-08 2003-04-08 Beam formwork with beams Expired - Fee Related JP4071142B2 (en)

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