JP4750326B2

JP4750326B2 - Pipe construction method, jig for pipe construction used in the method

Info

Publication number: JP4750326B2
Application number: JP2001247169A
Authority: JP
Inventors: 直山崎; 英紀福田; 秀人納谷; 仁原田
Original assignee: Takasago Thermal Engineering Co Ltd
Current assignee: Takasago Thermal Engineering Co Ltd
Priority date: 2001-08-16
Filing date: 2001-08-16
Publication date: 2011-08-17
Anticipated expiration: 2021-08-16
Also published as: JP2003056742A

Description

【０００１】
【発明の属する技術分野】
本発明は，建物シャフト内などにおいて竪ダクトや竪パイプなど（以下，これら竪ダクトや竪パイプなどを総称して「竪管」という）を施工する方法とそれに用いられる治具に関する。
【０００２】
【従来の技術】
従来，例えば高層建物のシャフト内などにおいて，複数の管材を直列に接合して竪管を施工する方法として，本出願人は特公平１−５６３１０号の高層建物の空調用竪ダクト施工法や特許第３０１５２２９号（特開平７−３４６６６号）の高層建物の竪管の施工方法を開示している。また，これらの施工方法を改良し，より少ない労力で竪管を施工できる方法として，特願２０００−２４９８０８号の複数階層建物の竪管の施工方法を先に出願している。
【０００３】
【発明が解決しようとする課題】
ところで，このように複数の管材を接合して竪管を施工した場合，接合箇所の近傍には，管材の端部を付き合わせて固定する際に利用したブラケットなどが突起となってそのまま残りやすい。一方，建物内に構築された竪管は，例えば種々の流体などを流通させる配管やダクトに使用されるが，冷温水や蒸気，空調ドレンなどの熱媒等を流通させる場合，それらの保温や竪管表面における結露を防ぐために，グラスウール等の断熱材で竪管を被覆することが必要となる。ここで，竪管を断熱材で被覆する場合，被覆面に突起などがそのまま残っていたのでは，作業の邪魔となってしまう。また，突起の付近では竪管表面と断熱材の間に隙間ができるため，保温効果が低下し，竪管表面に結露を生じやすくなるので，管材の外面腐食を招く心配もある。
【０００４】
このような場合，断熱材を適当な形状に整形し，突起の近傍においても断熱材を竪管の表面に密着させることも可能であるが，例えば１０階以上もあるような高層建物内に形成された長い竪管の各突起箇所について，そのような対処をするのは煩雑である。また，シャフト内には冷水管や温水管，冷温水管，冷媒管，空調ドレン管などといった多種の竪管が収められるのが普通であり，狭いシャフト内において，かかる煩雑な作業を行わなければならないのでは，徒に手間が掛かり，工期を長期化させる要因にもなる。
【０００５】
また，断熱材を被覆する場合のみならず，蒸気管を錆止め塗装などを竪管に施す場合も，同様の問題がある。更に，竪管に形成された突起は，もともと狭いシャフト内の空間をますます狭め，貫通部処理などの後作業や竣工後のメンテナンス・保守作業をやりにくくさせる要因となり，また，突起が邪魔になって溶接精度などに悪影響を及ぼすので，入念な点検作業も必要になるといった問題もある。
【０００６】
一方，竪管の表面に残っている突起を切断（具体的には溶断）し，竪管表面を平滑な形状にすることにより，断熱材の取り付け作業や塗装作業などを容易にさせることも可能である。しかし，それでは切断作業に多大な労力を要し，作業労力の低減を妨げてしまうことになりかねない。また，例えば特公平１−５６３１０号に見られるような，管材を持ち上げる際に利用する揚重用のプレートなどは本設となるため，材料費が無駄となり，資源の浪費にもなる。
【０００７】
従って本発明の目的は，表面が平滑な竪管を容易に施工できる手段を提供することにある。
【０００８】
【課題を解決するための手段】
この目的を達成するため，第１の治具と第２の治具を用いて２以上の管材を直列に接合して竪管を施工する方法であって，前記第１の治具は一対のクランプ部材を備えており，これら一対のクランプ部材を，パイプ部材の下端近傍を挟むように装着することにより，第１の治具はパイプ部材の下端近傍に取り付けられ，パイプ部材の下端近傍に取り付けられた第１の治具のクランプ部材の下縁がパイプ部材の下端近傍の外側面に設けられた凸部に当接し，第１の管材を建物の上方から吊り上げることにより該第１の管材を自重によりほぼ垂直にし，第１の管材の下端近傍に取り付けた第１の治具と第２の管材の上端近傍に取り付けた第２の治具を介して，前記垂直にされた第１の管材の下端に第２の管材の上端を回動自在に取り付け，該第２の管材を第１の管材に引き続いて吊り上げることにより，第２の管材を自重によりほぼ垂直にして第１の管材と第２の管材をほぼ一直線状にし，ほぼ一直線状になった状態において前記第１の治具と前記第２の治具を介して第１の管材の下端に第２の管材の上端を仮固定し，第１の管材の下端と第２の管材の上端を接合した後，前記第１の治具と前記第２の治具を取り外すことを特徴とする，竪管施工方法が提供される。
【０００９】
また本発明にあっては，第１の治具と第２の治具を用いて２以上の管材を直列に接合して竪管を施工する方法であって，前記第１の治具は一対のクランプ部材を備えており，これら一対のクランプ部材を，パイプ部材の下端近傍を挟むように装着することにより，第１の治具はパイプ部材の下端近傍に取り付けられ，パイプ部材の下端近傍に取り付けられた第１の治具のクランプ部材の下縁がパイプ部材の下端近傍の外側面に設けられた凸部に当接し，第１の管材を建物の上方から吊り上げることにより該第１の管材を自重によりほぼ垂直にし，予め第１の管材の下端近傍に取り付けておいた第１の治具と予め第２の管材の上端近傍に取り付けておいた第２の治具を介して，前記垂直にされた第１の管材の下端に第２の管材の上端を回動自在に取り付け，該第２の管材を第１の管材に引き続いて吊り上げることにより，第２の管材を自重によりほぼ垂直にして第１の管材と第２の管材をほぼ一直線状にし，ほぼ一直線状になった状態において前記第１の治具と前記第２の治具を介して第１の管材の下端に第２の管材の上端を仮固定し，第１の管材の下端と第２の管材の上端を接合した後，前記第１の治具と前記第２の治具を取り外すことを特徴とする，竪管施工方法が提供される。
【００１０】
本明細書において，竪管とは，例えば高層建物の如き複数の階層を有する建物のシャフト内などに設けられる竪ダクトや竪パイプなどであり，この竪管は，ダクト部材やパイプ部材などといった複数の管材を適宜接合することにより構成される。管材の上端とは，吊り上げた際に上になる管材の端部の意味であり，管材の下端とは，吊り上げた際に下になる管材の端部の意味である。
【００１１】
本発明にあっては，先ず，上層から吊り下げたワイヤー等に第１の管材（このように，竪管の施工に当たって最初に吊り下げられる管材は「第１の管材」である）の上端を下層にて吊り下げる。そして，例えば建物の最上階などに設置したウインチを利用してワイヤーを巻き上げ等することにより，第１の管材を下層から上方にワイヤーで吊り上げて自重によりほぼ垂直にさせる。
【００１２】
次に，この垂直にされた第１の管材の下端に第２の管材の上端を回動自在に取り付ける（このように，既に吊り下げられてほぼ垂直にさせられた管材（第１の管材）の下端に，下層に置かれた状態で上端を回動自在に取り付けられる管材が「第２の管材」である）。この場合，第１の管材の下端近傍に取り付けた第１の治具と第２の管材の上端近傍に取り付けた第２の治具を介して，前記垂直にされた第１の管材の下端に第２の管材の上端を回動自在に取り付ける。なお，これら各治具は，このように第１の管材の下端に第２の管材の上端を回動自在に取り付ける際に第１の管材の下端近傍や第２の管材の上端近傍に取り付けても良いし，あるいは，（例えば第１の管材を吊り上げる前において）予め第１の管材の下端近傍や第２の管材の上端近傍に取り付けておいても良い。
【００１３】
こうして第１の管材の下端に第２の管材の上端を回動自在に取り付けた状態で，第１の管材を更に吊り上げ，それに伴い，下層に置かれていた第２の管材は第１の管材に引き続いて吊り上げられる。このように第２の管材を第１の管材に引き続いて吊り上げる場合，第１の管材を垂直に吊り上げた後で，第１の管材の下端（吊り上げた際に下になる管材の端部が下端である）に，適宜各治具を介して，第２の管材の上端を回動自在に取り付けても良いし，また，第１の管材を垂直に吊り上げる前に，適宜各治具を介して，第１の管材の下端に第２の管材の上端を予め回動自在に取り付けておいても良い。なお，第１の管材を垂直に吊り上げた後に，適宜各治具を介して，第１の管材の下端に第２の管材の上端を回動自在に取り付ける場合は，必要に応じて第２の管材の上端を適宜移動させ（例えば一旦下降させ），第１の管材の下端に第２の管材の上端を近付けると良い。この場合，第２の管材の上端を適宜持ち上げるようにしても良い。
【００１４】
こうして第１の管材の下端に第２の管材の上端を，適宜各治具を介して回動自在に取り付けた状態で，下層に置かれていた第２の管材を第１の管材に引き続いて吊り上げることにより，第１の管材を更に上昇させて第２の管材に相当する長さを吊り上げ，第１の管材の下端に適宜各治具を介して接続された第２の管材を下層の床面上に吊り上げる。これにより，第２の管材は上端を支点に回動して自重によりほぼ垂直になり，第１の管材と第２の管材とはほぼ一直線状になる。このように，第２の管材に相当する長さ分第１の管材を上昇させれば，必然的に第２の管材は自重によりほぼ垂直になって第１の管材と第２の管材とはほぼ一直線状になるので，下の管材（第２の管材）を垂直姿勢に押さえてなくても良く，なるべく少ない労力で竪管を施工できるようになる。
【００１５】
なお，このように第１の管材の下端に適宜各治具を介して接続された第２の管材を下層の床面上に吊り上げていく際には，第２の管材の下端を下層において移動自在に支持することが好ましい。そうすれば，上端が引き上げられていくに従って第２の管材の下端が下層の床面上を円滑に移動することができ，作業がしやすい。
【００１６】
こうして第１の管材の下端に接続された第２の管材を下層の床面上に吊り上げることにより，第１の管材と第２の管材とをほぼ一直線状にしたら，適宜各治具を介して，第１の管材の下端に第２の管材の上端を固定する。そして，このように適宜各治具により仮固定した状態で，第１の管材の下端と第２の管材の上端を，例えば溶接することにより接合する。その後，第１の管材の下端と第２の管材の上端を固定していた各治具を適宜取り外す。そして，以上の工程を必要な回数だけ行うことにより，複数階層建物の建物シャフト内などにおいて，２以上の管材を直列に接合して竪管を施工することができる。
【００１７】
なお，第１の管材の下端と第２の管材の上端を接合する工程は，第１の管材の下端と第２の管材の上端を適宜各治具により仮固定した後，直ちに行っても良いが，例えば複数階層建物の建物シャフト内などにおいて，所定の本数の管材を適宜各治具を用いて仮固定した後，各固定箇所を一斉に接合しても良い。
【００１８】
また，各固定箇所を接合後に第１の管材の下端と第２の管材の上端を固定していた各治具を取り外す工程も，第１の管材の下端と第２の管材の上端を接合した後，直ちに行っても良いが，所定の本数の管材を溶接等によって接合して竪管を形成した後，各接合箇所から各治具を一斉に取り外すようにしても良い。
【００１９】
また，こうして適宜各治具を取り外した後，第１の管材の下端と第２の管材の上端の周りを断熱材で被覆しても良い。このように各治具を取り外した状態で断熱材で被覆することにより，第１の管材の下端と第２の管材の上端の周りに断熱材を密着させて，隙間のない状態で被覆することが可能となる。
【００２０】
【発明の実施の形態】
以下，本発明の実施の形態を図面を参照にして説明する。図１は，後述する竪管２をこれから施工しようとする建物１の断面を模式的に図示している。建物１は，例えば地上部分が１階〜Ｎ階までの複数の階層を有しており，図示の形態では，１階（１Ｆ）〜７階（７Ｆ）までの複数の階層を有している。建物１の各階（１Ｆ〜７Ｆ）の床面には，シャフト８を設けるためのスペース１’〜７’が，垂直方向にそろって形成されており，後述するように，これらスペース１’〜７’を通って竪管２が設けられるようになっている。
【００２１】
後に詳しく説明するように，竪管２は，管材の一例としてのパイプ部材１０を複数個直列に接続して組み立てられる。この実施の形態では，パイプ部材１０は両端が開口した円筒形状をなしており，パイプ部材１０の外面には著しい突起等がなく，パイプ部材１０の外面はほぼ平滑に形成されている。図１に示すように，パイプ部材１０は，台車１１などを利用して建物１の１Ｆに適宜搬入される。
【００２２】
建物１の最上階（図示の形態では屋上ＲＦ）には，パイプ部材１０を吊り上げるための吊り上げ装置１２が配置されている。この吊り上げ装置１２は，駆動機構としてのウインチ１３を備えており，屋上ＲＦにいるオペレーター１４がスイッチ１５を操作すると，滑車１６を介して屋上ＲＦから垂れ下がったワイヤー１７が，建物１の各階（１Ｆ〜７Ｆ）に設けられているスペース１’〜７’を通って昇降させられるようになっている。ワイヤー１７の下端には，パイプ部材１０の上端を引っかけて支持することが可能なフック１８が取り付けてある。
【００２３】
図２は，本発明の実施の形態にかかる第１の治具２０の斜視図であり，図３は，本発明の実施の形態にかかる第２の治具２１の斜視図である。第１の治具２０は，円筒を半割り形状にした一対のクランプ部材２５，２５を備えており，これらクランプ部材２５の両端には，固定片２６，２６がそれぞれ形成されている。固定片２６は，クランプ部材２５の両端に溶接しても良く，冷間鍛造でクランプ部材２５の両端に固定片２６一体成形しても良い。各固定片２６には，後述するように，第１の治具２０をパイプ部材１０の下端近傍に取り付ける際に，ボルト４０を通すための孔２７が設けられている。また，各クランプ部材２５の背面には，雄プレート２８がそれぞれ突出して設けられている。これら雄プレート２８には，後述するように，第１の治具２０と第２の治具２１を回動自在及び固定した状態で接続する際に軸４５を通すための円孔２９がそれぞれ設けてある。
【００２４】
第２の治具２１も同様に，円筒を半割り形状にした一対のクランプ部材３０，３０を備えており，これらクランプ部材３０の両端に，固定片３１，３１がそれぞれ形成されている。この固定片３１は，クランプ部材３０の両端に溶接しても良いし，冷間鍛造でクランプ部材３０の両端に固定片３１一体成形しても良い。各固定片３１には，後述するように，第２の治具２１をパイプ部材１０の上端近傍に取り付ける際に，ボルト４２を通すための孔３２が設けられている。また，各クランプ部材３０の背面には，前述の雄プレート２８を挿入可能な隙間を持って平行に配置された雌プレート３３，３３がそれぞれ突出して設けられている。また，各雌プレート３３には，後述するように，第１の治具２０と第２の治具２１を回動自在及び固定した状態で接続する際に軸４５を通すための円孔３４がそれぞれ設けてある。
【００２５】
図４は，下端近傍に第１の治具２０を取り付け，上端近傍に第２の治具２１を取り付けたパイプ部材１０の説明図である。図５は，同じパイプ部材１０の底面図（下面図）であり，図６は，同じパイプ部材１０の平面図（上面図）である。
【００２６】
半円形状の一対のクランプ部材２５，２５を，パイプ部材１０の下端近傍の両側から挟むように装着し，クランプ部材２５の端部に形成された固定片２６，２６同士をボルト４０によってしっかりと止めることにより，第１の治具２０は，パイプ部材１０の下端近傍に取り付けられる。この場合，ボルト４０は，各固定片２６に設けられた孔２７に通せばよい。こうしてパイプ部材１０の下端近傍に第１の治具２０を取り付けることにより，パイプ部材１０の下端近傍の両側には，１８０゜離れた位置で対向するように，円孔２９を有する雄プレート２８がそれぞれ突出した状態となる。なお，パイプ部材１０の下端近傍の外側面には，凸部４１が設けられており，このようにパイプ部材１０の下端近傍に第１の治具２０を取り付ける際には，クランプ部材２５の下縁をこの凸部４１にあてがうことにより位置決めする。こうしてパイプ部材１０の下端近傍に取り付けられた第１の治具２０は，クランプ部材２５の下縁が凸部４１に当接するので，パイプ部材１０の下方に抜け落ちる心配がない。なお，凸部４１の突出厚さ（高さ)は，パイプ部材１０の抜け落ちを防げれば十分であり，クランプ部材２５の厚さと同程度か，もしくはクランプ部材２５の厚さよりも薄い程度である。
【００２７】
同様に，半円形状の一対のクランプ部材３０，３０を，パイプ部材１０の上端近傍の両側から挟むように装着し，クランプ部材３０の端部に形成された固定片３１，３１同士をボルト４２によってしっかりと止めることにより，第２の治具２１は，パイプ部材１０の上端近傍に取り付けられる。この場合，ボルト４２は，各固定片３１に設けられた孔３２に通せばよい。こうしてパイプ部材１０の上端近傍に第２の治具２１を取り付けることにより，パイプ部材１０の上端近傍の両側には，１８０゜離れた位置で対向するように，円孔３４を有する雌プレート３３がそれぞれ突出した状態となる。なお，パイプ部材１０の上端近傍の外側面にも，凸部４３が設けられており，このようにパイプ部材１０の上端近傍に第２の治具２１を取り付ける際には，クランプ部材３０の上縁をこの凸部４３にあてがうことにより位置決めする。こうしてパイプ部材１０の上端近傍に取り付けられた第２の治具２０は，クランプ部材３０の上縁が凸部４３に当接するので，パイプ部材１０の上方に抜け出る心配がない。なお，凸部４３の厚さ（高さ)も，パイプ部材１０の抜け落ちを防げれば十分であり，クランプ部材３０の厚さと同程度か，もしくはクランプ部材３０の厚さよりも薄い程度である。
【００２８】
そして，２本のパイプ部材１０を接続する場合，図７，８に示すように，上のパイプ部材１０の下端近傍に第１の治具２０を取り付け，下のパイプ部材１０の上端近傍に第２の治具２１を取り付ける。そして，これら第１の治具２０と第２の治具２１を介して，上下２本のパイプ部材１０を接続する。
【００２９】
この場合，図７に示すように，上のパイプ部材１０の下端近傍に取り付けた第１の治具２０に形成された一方の雄プレート２８と，下のパイプ部材１０の上端近傍に取り付けた第２の治具２１に形成された一方の雌プレート３３（図示の例では，上のパイプ部材１０の下端近傍に取り付けられた第１の治具２０における右側の雄プレート２８と，下のパイプ部材１０の上端近傍に取り付けられた第２の治具２１における右側の雌プレート）を軸４５（例えばボルト，ナット）によって接続することにより，上のパイプ部材１０に対して下のパイプ部材１０を回動自在に接続することが可能である。即ち，このように上下２本のパイプ部材１０，１０を回動自在に接続する場合は，下のパイプ部材１０の上端近傍に取り付けた第２の治具２１に形成された一方の雌プレート３３，３３同士の隙間に，パイプ部材１０の下端近傍に取り付けた第１の治具２０に形成された一方の雄プレート２８を挿入する。そして，雌プレート３３に設けられた円孔３４と，雄プレート２８に設けられた円孔２９の位置を合わせて，これら円孔３４と円孔２９に軸４５を通す。これにより，第１の治具２０の一方の雄プレート２８と第２の治具２１の一方の雌プレート３３は軸４５を介して接続され，上下のパイプ部材１０，１０同士が軸４５を中心にして回転自在に接続されることとなる。
【００３０】
また図８に示すように，下のパイプ部材１０が回動して床面と垂直になった後，上のパイプ部材１０の下端近傍に取り付けた第１の治具２０に形成された，他方の（回動に寄与しない側の）雄プレート２８を，下のパイプ部材１０の上端近傍に取り付けた第２の治具２１に形成された他方の（回動に寄与しない側の）雌プレート３３に，軸４５によって接続することにより，上のパイプ部材１０の下端近傍に取り付けた第１の治具２０に形成された両方の雄プレート２８を，下のパイプ部材１０の上端近傍に取り付けた第２の治具２１に形成された両方の雌プレート３３に，軸４５によって接続した状態とし，上のパイプ部材１０に対して下のパイプ部材１０をより安定した状態で一直線上にして接続することも可能である。即ち，このように上下のパイプ部材１０，１０を直列に接続する場合は，先ず，図７で説明したように，上のパイプ部材１０の下端近傍に取り付けた第１の治具２０に形成された一方の雄プレート２８と，下のパイプ部材１０の上端近傍に取り付けた第２の治具２１に形成された一方の雌プレート３３を軸４５を介して回転自在に接続する。そして，軸４５を中心に下のパイプ部材１０を回転させ，上のパイプ部材１０の下端と下のパイプ部材１０の上端を向かい合わせる。このように，上のパイプ部材１０の下端と下のパイプ部材１０の上端を向かい合わせて上下のパイプ部材１０，１０を一直線状に並べた際には，下のパイプ部材１０の上端近傍に取り付けた第２の治具２１に形成された他方の雌プレート３３，３３同士の隙間に，上のパイプ部材１０の下端近傍に取り付けた第１の治具２０に形成された他方の雄プレート２８が挿入され，他方の雌プレート３３に設けられた円孔３４と，他方の雄プレート２８に設けられた円孔２９の位置が丁度合うこととなる。こうして位置合わせされた円孔３４と円孔２９（他方の（即ち，回動の支点とならない側の）雌プレート３３に設けられた円孔３４と，他方の（即ち，回動に寄与しない側の）雄プレート２８に設けられた円孔２９）に軸４５を通す。これにより，上のパイプ部材１０の下端近傍に取り付けられた第１の治具２０と，下のパイプ部材１０の上端近傍に取り付けられた第２の治具２１は，左右２本の軸４５を介して接続されて回転できなくなり，上下のパイプ部材１０，１０同士は直列に固定して接続されることとなる。
【００３１】
なお，図８に示すように，こうして上下のパイプ部材１０，１０同士を，第１の治具２０と第２の治具２１を介して直列に固定した際に，雄プレート２８及び雌プレート３３の内側とパイプ部材１０の外面との間に隙間４６を形成できるように，上のパイプ部材１０の下端近傍に取り付けた第１の治具２０にあっては，雄プレート２８とパイプ部材１０の外面との間に適当な隙間が形成され，同様に，下のパイプ部材１０の上端近傍に取り付けた第２の治具２１にあっては，雌プレート３３とパイプ部材１０の外面との間に適当な隙間が形成されている。これにより，後述するように上下のパイプ部材１０，１０同士を溶接する際には，雄プレート２８及び雌プレート３３の内側とパイプ部材１０の外面との間に形成された隙間４６を利用することにより，上のパイプ部材１０の下端とパイプ部材１０の上端を全周に渡って漏れなく溶接することが可能である。
【００３２】
さて，図１に示した建物１において，１Ｆ〜ＲＦまで竪管２を施工する場合，先ず，最下層である１Ｆに，台車１１などを利用してパイプ部材１０を搬入する。そして，建物１の最上階ＲＦに配置された吊り上げ装置１２において，オペレーター１４がスイッチ１５を操作してウインチ１３を稼働させ，先ずワイヤー１７を下降させる。こうして，ワイヤー１７下端のフック１８を１Ｆまで下降させ，１Ｆにおいて台車１１上に置かれている最初のパイプ部材１０（第１のパイプ部材１０）の上端にフック１８を係合させる。この場合，最初のパイプ部材１０の上端に適当な吊金物５０などを装着してフック１８を係合させると良い。
【００３３】
係合後，図９に示すように，屋上ＲＦにいるオペレーター１４がスイッチ１５を操作してウインチ１３を稼働させ，今度はワイヤー１７を徐々に吊り上げていく。これにより，吊金物５０を介してフック１８に係合させられた最初のパイプ部材１０の上端は徐々に持ち上げられていき，最初のパイプ部材１０は，今まで１Ｆの床面上に水平となって置かれていた姿勢から，徐々に立ち上げられ，垂直の姿勢にされていく。なお，このように最初パイプ部材１０の姿勢が水平から垂直に変化させられていく際には，パイプ部材１０の下端は１Ｆの床面上を台車１１に置かれた状態で円滑に移動することが可能である。
【００３４】
こうして，最初のパイプ部材１０の下端が１Ｆの床面上方に持ち上げられる高さまで吊り上げられると，図１０に示すように，最初のパイプ部材１０は自重によってほぼ垂直の姿勢に垂れ下げられる。そして，このように最初のパイプ部材１０の下端が１Ｆの床面上方の適当な高さに持ち上げられた状態で，屋上ＲＦにいるオペレーター１４はウインチ１３の稼働を一旦停止させる。また一方，建物１の１Ｆには，台車１１などを利用して次のパイプ部材１０（第２のパイプ部材１０）を予め搬入しておく。
【００３５】
次に，前述のようにワイヤー１７下端のフック１８に吊金物５０を介して上端を係合されて吊り上げられたことによりほぼ垂直の姿勢にさせられた最初のパイプ部材１０の下端に，１Ｆに搬入された次のパイプ部材１０の上端を，第１の治具２０と第２の治具２１を介して，回動自在に取り付ける。この場合，１Ｆにいるオペレーター１４は，先に図７で説明したように，上のパイプ部材１０の下端近傍に取り付けた第１の治具２０に形成された一方の雄プレート２８と，下のパイプ部材１０の上端近傍に取り付けた第２の治具２１に形成された一方の雌プレート３３を軸４５によって接続することにより，上のパイプ部材１０に対して下のパイプ部材１０を回動自在に接続することができる。なお，第１の治具２０及び第２の治具２１は，このように最初のパイプ部材１０の下端に次のパイプ部材１０の上端を回動自在に取り付ける際に，上のパイプ部材１０の下端近傍と下のパイプ部材１０の上端近傍にそれぞれ取り付けても良いし，予め，第１の治具２０及び第２の治具２１を，上のパイプ部材１０の下端近傍と下のパイプ部材１０の上端近傍にそれぞれ取り付けておいても良い。また，このように最初のパイプ部材１０を起立させた後，その下端に次のパイプ部材１０の上端を回動自在に取り付ける場合，オペレーター１４は，１Ｆに置かれている次のパイプ部材１０の上端を，必要に応じて適宜持ち上げるなどして移動させ，最初のパイプ部材１０の下端に近付けると良い。
【００３６】
次に，こうして最初のパイプ部材１０の下端に次のパイプ部材１０の上端を，第１の治具２０及び第２の治具２１を介して回動自在に取り付けたら，屋上ＲＦにいるオペレーター１４がスイッチ１５を操作してウインチ１３を稼働させ，ワイヤー１７を再び徐々に上昇させていく。これにより，図１１に示すように，第１の治具２０及び第２の治具２１を介して最初のパイプ部材１０の下端に回動自在に接続されている次のパイプ部材１０の上端は徐々に持ち上げられていき，次のパイプ部材１０は，今まで１Ｆの床面上に水平となって置かれていた姿勢から，徐々に立ち上げられ，次第に垂直の姿勢にされていく。なお，このように次のパイプ部材１０の姿勢が水平から垂直に変化させられていく際には，１Ｆにいるオペレーター１４が次のパイプ部材１０を適宜ガイドしてやると良い。この場合，次のパイプ部材１０の下端を台車１１に置いて１Ｆの床面上を走行自在に支持してやれば，オペレーター１４はパイプ部材１０の自重を支えなくて済み，パイプ部材１０の下端を円滑に移動させることができて作業がしやすい。
【００３７】
そして図１２に示すように，こうして次のパイプ部材１０の下端が１Ｆの床面上方に持ち上げられる高さまでが吊り上げられると，次のパイプ部材１０も自重によってほぼ垂直の姿勢に垂れ下げられ，これにより，最初のパイプ部材１０と次のパイプ部材１０はいずれも垂直となって，両者はほぼ一直線状になる。そして，このように次のパイプ部材１０の下端が１Ｆの床面上方の適当な高さに持ち上げられた状態で，屋上ＲＦにいるオペレーター１４はウインチ１３の稼働を再び一旦停止させる。また一方，建物１の１Ｆには，台車１１などを利用して更に次のパイプ部材１０（第２のパイプ部材１０）を予め搬入しておく。
【００３８】
そして，このように最初のパイプ部材１０と次のパイプ部材１０をほぼ一直線状にした状態で，第１の治具２０及び第２の治具２１を介して，最初のパイプ部材１０の下端に次のパイプ部材１０の上端を仮固定する。この場合，図１２に示すように，２Ｆにいるオペレーター１４が，先に図８で説明したように，上のパイプ部材１０の下端近傍に取り付けた第１の治具２０に形成された両方の雄プレート２８を，下のパイプ部材１０の上端近傍に取り付けた第２の治具２１に形成された両方の雌プレート３３に，軸４５によって接続した状態とすることにより，上のパイプ部材１０に対して下のパイプ部材１０を安定して一直線上にして接続することができる。なお，このようなパイプ部材１０同士の接合作業を，建物１の２Ｆにいるオペレーター１４が円滑に行えるように，各パイプ部材１０の長さは，建物１の１Ｆの天井高さ（１Ｆの床から２Ｆの床までの高さ）にほぼ等しく設定しておくと良い。
【００３９】
そして，以上の工程を適宜繰り返し，複数本のパイプ部材１０を適宜直列に接合していく。こうして，図１３に示すように，複数の（図示の形態では４本の）パイプ部材１０を，第１の治具２０及び第２の治具２１を介して，順次固定し，予定した竪管２を組み立てる。こうして組み立てられた竪管２の下方には，荷重受固定金物５１を取り付け，竪管２の荷重を荷重受固定金物５１に預けて支えると良い。また，組み立てられた竪管２の周りを，建物１の各階（１Ｆ〜７Ｆ）のスペース１’〜７’に装着した支持部材（埋め戻し部材）５２で押さえるようにしても良い。
【００４０】
こうして竪管２を組み立てた後，各パイプ部材１０の端部同士をそれぞれ溶接して接合する。このように，パイプ部材１０の端部同士を溶接する際には，先に図８で説明したように，上下のパイプ部材１０，１０同士を第１の治具２０と第２の治具２１を介して直列に固定した状態において，雄プレート２８及び雌プレート３３の内側とパイプ部材１０の外面との間に形成される隙間４６を利用することにより，上のパイプ部材１０の下端とパイプ部材１０の上端を全周に渡って漏れなく溶接することが可能である。
【００４１】
そして，複数本のパイプ部材１０の突合せ部を固定すべく溶接して直列に連通させた後，各パイプ部材１０同士を仮固定していた第１の治具２０及び第２の治具２１を，図１４に示すように，各パイプ部材１０の上端近傍及び下端近傍から取り外す。こうして，建物１内において，１Ｆ〜ＲＦに渡って，表面に突起などが実質的にない，外面が平滑な形状の竪管２を施工することができるようになる。なお，吊り上げ装置１２は，竪管２を施工した後，適宜分解等して建物１の最上階（屋上ＲＦ）から撤去すればよい。なお，符号５２は，床スラブに形成された揚重用開口の貫通部処理（埋め戻し）をした状態を示している。
【００４２】
そして，このように第１の治具２０及び第２の治具２１を取り外した後，各パイプ部材１０同士の接続部もしくは竪管２の全長に渡り，断熱材を被覆する。このように，第１の治具２０及び第２の治具２１を取り外した状態で断熱材で被覆することにより，各パイプ部材１０同士の接続部近傍においても，断熱材を表面に密着させて，隙間のない状態で被覆することが可能となる。
【００４３】
この実施の形態の施工方法によれば，パイプ部材１０を吊り上げるだけで複数のパイプ部材１０を自重で一直線状に並べて接合できるので，少ない労力で竪管２を施工できる。そして，施工された竪管２は，第１の治具２０及び第２の治具２１を取り外すことにより，表面に突起などが実質的にない，外面が平滑な形状の竪管２とすることができる。このため，各パイプ部材１０同士の接続部近傍においても，断熱材を表面に密着させて被覆することが可能となる。
【００４４】
以上，本発明の好適な実施の形態の一例を説明したが，本発明はここに示した形態に限定されない。例えばパイプ部材１０同士を回動自在に取り付ける際に，第１の治具２０と第２の治具２１をパイプ部材１０の下端近傍や上端近傍に取り付けるようにしても良いが，例えばパイプ部材１０を吊り上げる前などにおいて，パイプ部材１０の下端近傍や上端近傍に第１の治具２０と第２の治具２１を予め取り付けておいても良い。また，図１０では，最初のパイプ部材１０を吊り上げてほぼ垂直の姿勢にさせた後に，最初のパイプ部材１０の下端に，第１の治具２０と第２の治具２１を介して，次のパイプ部材１０の上端を回動自在に取り付けた例を説明したが，最初のパイプ部材１０（第１の管材）を吊り上げる前に，最初のパイプ部材１０（第１の管材）の下端に，第１の治具２０と第２の治具２１を介して，次のパイプ部材１０（第２の管材）の上端を予め回動自在に取り付けておいても良い。
【００４５】
また，パイプ部材１０同士を溶接して接合する工程は，第１の治具２０と第２の治具２１を介してパイプ部材１０同士を仮固定した後，直ちに行っても良いが，例えば，３本以上のパイプ部材１０を第１の治具２０と第２の治具２１を介して仮固定した後，各固定箇所を一斉に溶接して接合しても良い。また，各固定箇所を接合後に第１の治具２０と第２の治具２１を取り外す工程も，パイプ部材１０同士を接合した後，直ちに行っても良いが，所定の本数のパイプ部材１０を溶接によって接合して竪管２を形成した後，各接合箇所から第１の治具２０と第２の治具２１を一斉に取り外すようにしても良い。また，断熱材を被覆する工程も，パイプ部材１０同士の各接合箇所毎に行っても良いし，竪管２を形成した後，一斉に行っても良い。
【００４６】
また，例えば４０階建ての１０階分を１単位として，パイプ部材１０同士の溶接作業，第１の治具２０と第２の治具２１の取り外し作業，断熱被覆作業（塗装作業）を行うなど，任意のタイミングで各作業を行っても良い。また，１日での作業の進んだ分を単位として各作業を行うことも可能である。
【００４７】
なお，パイプ部材１０の下端近傍に第１の治具２０を取り付けたり，上端近傍に第２の治具２１を取り付ける場合，クランプ部材２５，２５同士の締め付けやクランプ部材３０，３０同士の締め付けが不十分であると，これら第１の治具２０や第２の治具２１がパイプ部材１０の端部から抜け落ちる心配がある。かかる問題については，先に図４で説明したように，パイプ部材１０の下端近傍の外側面に凸部４１を設け，パイプ部材１０の上端近傍の外側面に凸部４３を設けることが有効である。これら凸部４１及び凸部４３は，パイプ部材１０の外側面の適当な箇所に鋼片などを溶接等で取り付けるだけで容易に形成できる。また，凸部４１及び凸部４３の厚みは，クランプ部材２５，３０の厚さと同程度か，もしくはクランプ部材２５，３０の厚さよりも薄い程度で充分であり，せいぜい３ｃｍ程度か，凸部４１及び凸部４３を複数箇所に設ける場合は，せいぜい１．５ｃｍ程度で足りる。要は，パイプ部材１０の端部から第１の治具２０や第２の治具２１が抜け落ちることを防止し，第１の治具２０及び第２の治具２１を介して接続したパイプ部材１０の重量を支えられるものであればよい。また，パイプ部材１０自体をダボ打ち等により膨出させ，凸部を４１，４３を形成することもできる。このように凸部４１及び凸部４３の厚みをなるべく小さくすることによって，各パイプ部材１０同士の接続部近傍において，断熱材を表面になるべく密着させて被覆することが可能となる。
【００４８】
また，図１５に示すように，第１の治具２０において，円筒を半割り形状にした一対のクランプ部材２５，２５の一端をヒンジ５５により開閉自在に接続し，クランプ部材２５，２５の他端に，ボルト４０を通すための孔２７を設けた固定片２６，２６をそれぞれ形成しても良い。この図１５に示す第１の治具２０によれば，ヒンジ５５を中心にしてクランプ部材２５，２５を開閉させることにより，パイプ部材１０の下端近傍に簡単に装着及び脱着できるといった利点がある。
【００４９】
また同様に，図１６に示すように，第２の治具２１においても，円筒を半割り形状にした一対のクランプ部材３０，３０の一端をヒンジ５６により開閉自在に接続し，クランプ部材３０，３０の他端に，ボルト４２を通すための孔３２を設けた固定片３１，３１をそれぞれ形成しても良い。この図１６に示す第２の治具２１によっても，ヒンジ５６を中心にしてクランプ部材３０，３０を開閉させることにより，パイプ部材１０の上端近傍に簡単に装着及び脱着できるといった利点がある。
【００５０】
更に，固定片２６，２６同士や固定片３１，３１は，ボルト４０，４２を用いて固定する他，適当なクランプやクリップなどを用いて固定することもできる。
クランプやクリップなどを用いる場合は，孔２７や孔３２を省略できる。
【００５１】
また，以上においては，パイプ部材１０の下端近傍に第１の治具２０を取り付け，上端近傍に第２の治具２１を取り付けた例を示したが，例えば図１７に示すように，パイプ部材１０の下端近傍の両側に，円孔２９を有する雄プレート２８を固定し，第１の治具２０を省略することも可能である。この場合，竪管２の施工後においても雄プレート２８が残ることになるが，雄プレート２８をなるべく小型に形成することで，各パイプ部材１０同士の接続部近傍において，断熱材を表面になるべく密着させて被覆することが可能となる。また同様に，図示はしないが，パイプ部材１０の上端近傍の両側に，円孔３４を有する雌プレート３３を固定し，第２の治具２１を省略することも可能である。
【００５２】
その他，竪管２を組み立てるための管材は，パイプ部材１０に限らず，角ダクトなででも良く，また，スパイラルダクトのような円形の断面形状を持つダクトなどであっても良い。また，図示の形態では１Ｆ〜ＲＦに渡って竪管を施工する例を説明したが，一階から屋上までダクトを組み立てる場合に限られず，任意の階（地階も含む）からそれよりも上層の階層まで竪管２を組み立てるようなものであっても良い。また，本発明は建物１を新築する場合だけでなく，既設の建物１での竪管２の更新にも適用できる。
【００５３】
【発明の効果】
本発明によれば，吊り上げるだけで第１の管材と第２の管材をほぼ一直線状に並べて直列に接合でき，少ない労力で竪管を施工できる。また，各治具を取り外すことによって，突起のない状態で，断熱材を管材の表面になるべく密着させて被覆することが可能となる。また，工事現場では，狭いシャフト内でも竪管の新設，更新を行うことができる。更に，取り外した各治具は再利用でき，他の工事現場で利用することが可能なので，資源の有効活用ができ，地球環境の維持に貢献する。
【図面の簡単な説明】
【図１】竪管をこれから施工しようとする建物の断面を模式的に示した図面である。
【図２】本発明の実施の形態にかかる第１の治具の斜視図である。
【図３】本発明の実施の形態にかかる第２の治具の斜視図である。
【図４】下端近傍に第１の治具を取り付け，上端近傍に第２の治具を取り付けたパイプ部材の正面図である。
【図５】下端近傍に第１の治具を取り付けたパイプ部材の底面図（下面図）である。
【図６】上端近傍に第２の治具を取り付けたパイプ部材の平面図（上面図）である。
【図７】第１の治具及び第２の治具を介してパイプ部材同士を回転自在に接続した状態を示す部分拡大図である。
【図８】第１の治具及び第２の治具を介してパイプ部材同士を直列に仮固定した状態を示す部分拡大図である。
【図９】最初のパイプ部材の上端にフックを係合させた状態の説明図である。
【図１０】ほぼ垂直の姿勢にさせられた最初のパイプ部材の下端に次のパイプ部材の上端を第１の治具及び第２の治具を介して回動自在に取り付ける状態を説明するための平面図である。
【図１１】次のパイプ部材が徐々に立ち上げられて次第に垂直の姿勢にされていく状態の説明図であり，パイプ部材の下端を台車に載せることにより走行自在に支持した状態を示している。
【図１２】最初のパイプ部材と次のパイプ部材をほぼ一直線状にし，２Ｆにいるオペレーターが第１の治具及び第２の治具を介して両者を直列に仮固定している状態の説明図である。
【図１３】建物内に施工された竪管の説明図である。
【図１４】第１の治具及び第２の治具を取り外した竪管の説明図である。
【図１５】クランプ部材同士をヒンジにより開閉自在に接続した第１の治具の斜視図である。
【図１６】クランプ部材同士をヒンジにより開閉自在に接続した第２の治具の斜視図である。
【図１７】本発明の別の実施の形態にかかる治具を上端近傍に取り付けたパイプ部材の正面図である。
【符号の説明】
１建物
２竪管
１’〜７’ スペース
８シャフト
１０パイプ部材
１１台車
１２吊り上げ装置
１３ウインチ
１４オペレーター
１７ワイヤー
２０第１の治具
２１第２の治具
２５，３０クランプ部材
２６，３１固定片
２８雄プレート
３３雌プレート[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method for constructing a dredging duct or a dredging pipe in a building shaft or the like (hereinafter, these dredging ducts or dredging pipes are collectively referred to as “soot pipe”) and a jig used therefor.
[0002]
[Prior art]
In the past, for example, in the shaft of a high-rise building, the present applicant has applied a method for constructing a duct for air conditioning of a high-rise building of Japanese Patent Publication No. 1-56310 as a method of constructing a pipe by joining a plurality of pipes in series. No. 3015229 (Japanese Patent Laid-Open No. 7-34666) discloses a method for constructing a duct for a high-rise building. In addition, as a method for improving these construction methods and constructing the pipes with less labor, the Japanese Patent Application No. 2000-249808 has previously filed a method for constructing the pipes of a multi-story building.
[0003]
[Problems to be solved by the invention]
By the way, when a pipe is constructed by joining a plurality of pipes in this way, brackets used when attaching and fixing the ends of the pipes are likely to remain as protrusions in the vicinity of the joints. . On the other hand, for example, pipes constructed in buildings are used for piping and ducts that circulate various fluids, etc., but when circulating heat medium such as cold / hot water, steam, air conditioning drains, etc., In order to prevent condensation on the surface of the soot tube, it is necessary to cover the soot tube with a heat insulating material such as glass wool. Here, when the soot tube is covered with a heat insulating material, if the protrusions or the like remain on the covering surface, the work is disturbed. In addition, since there is a gap between the surface of the pipe and the heat insulating material in the vicinity of the protrusion, the heat insulation effect is reduced and condensation is likely to occur on the surface of the pipe, which may cause external corrosion of the pipe.
[0004]
In such a case, it is possible to shape the heat insulating material into an appropriate shape, and to make the heat insulating material adhere to the surface of the pipe even in the vicinity of the protrusion, but for example, it is formed in a high-rise building with more than 10 floors. It is cumbersome to deal with such protrusions on the long tubule. In addition, various shafts such as cold water pipes, hot water pipes, cold / hot water pipes, refrigerant pipes, and air-conditioning drain pipes are usually housed in the shaft, and such complicated work must be performed in the narrow shaft. Therefore, it takes time and effort for the students, and it can also be a factor in prolonging the construction period.
[0005]
The same problem arises not only when coating insulation, but also when applying rust-prevention coating to steam pipes. In addition, the protrusions formed on the pipes narrow the space inside the narrow shaft originally, which makes it difficult to carry out post-processing such as through-hole processing and maintenance / maintenance work after completion. As a result, the welding accuracy is adversely affected, so that there is also a problem that careful inspection work is required.
[0006]
On the other hand, by cutting the protrusions remaining on the surface of the soot tube (specifically, fusing) and making the surface of the soot tube smooth, it is also possible to make it easier to install insulation or paint. It is. However, this requires a lot of labor for the cutting work, which may hinder the reduction of work labor. Further, for example, as shown in Japanese Patent Publication No. 1-56310, a lifting plate or the like used when lifting a pipe material is provided as a main construction, so that material costs are wasted and resources are wasted.
[0007]
Accordingly, an object of the present invention is to provide means for easily constructing a soot tube having a smooth surface.
[0008]
[Means for Solving the Problems]
To achieve this goal,Using the first jig and the second jigTwo or more pipe members are joined in series to construct a pipeIn the method, the first jig includes a pair of clamp members, and the first jig is a pipe member by attaching the pair of clamp members so as to sandwich the vicinity of the lower end of the pipe member. The lower edge of the clamp member of the first jig attached near the lower end of the pipe member abuts on the convex portion provided on the outer surface near the lower end of the pipe member,The first pipe is lifted from above the building to make the first pipe almost vertical by its own weight, and attached to the first jig attached near the lower end of the first pipe and the upper end of the second pipe. By pivotally attaching the upper end of the second pipe member to the lower end of the vertical first pipe member via the second jig, and subsequently lifting the second pipe member up to the first pipe member The first pipe and the second pipe are made substantially straight by making the second pipe substantially vertical by its own weight, and in the almost straight state, the first and second jigs are passed through the first jig and the second jig. The upper end of the second pipe to the lower end of the first pipeTemporarily fixedThen, after joining the lower end of the first pipe member and the upper end of the second pipe member, the first jig and the second jig are removed.A method for constructing a fistula is provided.
[0009]
In the present invention, the first jig and the second jig are used to join two or more pipes in series to construct a soot tube, and the first jig is a pair. The first jig is attached near the lower end of the pipe member by attaching the pair of clamp members so as to sandwich the vicinity of the lower end of the pipe member. The lower edge of the clamp member of the attached first jig comes into contact with the convex portion provided on the outer surface near the lower end of the pipe member, and the first pipe member is lifted from above the building, thereby Through the first jig previously attached near the lower end of the first pipe member and the second jig previously attached near the upper end of the second pipe member. The upper end of the second pipe can be rotated freely on the lower end of the first pipe made By attaching and lifting the second pipe material to the first pipe material, the first pipe material and the second pipe material are made substantially straight and almost straight by making the second pipe material almost vertical by its own weight. In this state, the upper end of the second pipe is temporarily fixed to the lower end of the first pipe through the first jig and the second jig, and the lower end of the first pipe and the upper end of the second pipe After joining the first and second jigs, the first and second jigs are removed.
[0010]
In this specification, the soot pipe is, for example, a soot duct or soot pipe provided in a shaft of a building having a plurality of levels such as a high-rise building, and this soot pipe includes a plurality of duct members, pipe members, and the like. It is comprised by joining these pipe materials suitably. The upper end of the pipe means the end of the pipe that goes up when it is lifted, and the lower end of the pipe means the end of the pipe that goes down when it is lifted.
[0011]
In the present invention, first, the upper end of the first pipe material (in this way, the first pipe material to be suspended in the construction of the soot pipe is the “first pipe material”) on the wire or the like suspended from the upper layer. Suspend on the lower layer. Then, for example, by winding a wire using a winch installed on the uppermost floor of the building, the first pipe material is lifted upward from the lower layer by the wire and made almost vertical by its own weight.
[0012]
Next, the upper end of the second pipe member is rotatably attached to the lower end of the first pipe member made vertical (in this way, the pipe member that has already been suspended and made substantially vertical (first pipe member). The tube material that can be pivotally attached to the lower end of the upper end while being placed in the lower layer is the “second tube material”). In this case, the first jig attached near the lower end of the first pipe member and the second jig attached near the upper end of the second pipe member are connected to the lower end of the vertical first pipe member. The upper end of the second pipe is pivotally attachedTheThese jigs are attached in the vicinity of the lower end of the first tube member or the upper end of the second tube member when the upper end of the second tube member is rotatably attached to the lower end of the first tube member. Alternatively, it may be attached in advance near the lower end of the first pipe member or near the upper end of the second pipe member (for example, before lifting the first pipe member).
[0013]
In this way, with the upper end of the second pipe member pivotably attached to the lower end of the first pipe member, the first pipe member is further lifted, and accordingly, the second pipe member placed in the lower layer is the first pipe member. Is subsequently lifted. In this way, when the second pipe material is subsequently lifted on the first pipe material, after the first pipe material is lifted vertically, the lower end of the first pipe material (the end of the pipe material that is lowered when the first pipe material is lifted is the lower end). In addition, the upper end of the second pipe member may be pivotably attached via each jig as appropriate, and before the first pipe member is lifted vertically, , The upper end of the second pipe member may be rotatably attached to the lower end of the first pipe member. When the upper end of the second pipe member is pivotally attached to the lower end of the first pipe member through appropriate jigs after the first pipe member has been lifted vertically, the second pipe is optionally provided. The upper end of the second pipe member may be moved closer to the lower end of the first tube member, for example, by appropriately moving the upper end of the tube member (for example, once lowered). In this case, you may make it raise the upper end of a 2nd pipe material suitably.
[0014]
In this way, with the upper end of the second pipe member attached to the lower end of the first pipe member so as to be freely rotatable via each jig, the second pipe member placed in the lower layer is continued to the first pipe member. By lifting, the first pipe is further raised to lift the length corresponding to the second pipe, and the second pipe connected to the lower end of the first pipe through appropriate jigs is placed on the lower floor. Lift on the surface. As a result, the second tube is rotated about its upper end as a fulcrum and becomes almost vertical due to its own weight, and the first tube and the second tube are substantially straight. In this way, if the first pipe is raised by a length corresponding to the second pipe, the second pipe is inevitably almost vertical due to its own weight, and the first pipe and the second pipe are separated from each other. Since it is almost straight, it is not necessary to hold down the lower pipe (second pipe) in a vertical position, and it is possible to construct a pipe with as little effort as possible.
[0015]
When the second pipe connected to the lower end of the first pipe appropriately through each jig is lifted on the floor of the lower layer, the lower end of the second pipe is moved in the lower layer. It is preferable to support freely. If it does so, the lower end of the 2nd pipe material can move smoothly on the lower floor as the upper end is pulled up, and work is easy.
[0016]
When the first pipe member and the second pipe member are made substantially straight by lifting the second pipe member connected to the lower end of the first pipe member on the lower floor surface in this manner, The upper end of the second pipe is fixed to the lower end of the first pipe. And in the state temporarily fixed by each jig | tool suitably in this way, the lower end of a 1st pipe material and the upper end of a 2nd pipe material are joined by welding, for example. Then, each jig | tool which fixed the lower end of the 1st pipe material and the upper end of the 2nd pipe material is removed suitably. Then, by performing the above steps as many times as necessary, two or more pipe members can be joined in series in a building shaft of a multi-story building or the like to construct a construction pipe.
[0017]
The step of joining the lower end of the first pipe member and the upper end of the second pipe member may be performed immediately after the lower end of the first pipe member and the upper end of the second pipe member are temporarily fixed with appropriate jigs. However, for example, in a building shaft of a multi-story building, a predetermined number of pipe members may be temporarily fixed using appropriate jigs, and then the fixing points may be joined together.
[0018]
In addition, the step of removing each jig that has fixed the lower end of the first pipe member and the upper end of the second pipe member after joining the respective fixed portions also joins the lower end of the first pipe member and the upper end of the second pipe member. After that, it may be performed immediately, but after a predetermined number of pipe members are joined by welding or the like to form a soot tube, the jigs may be removed from the joints at the same time.
[0019]
Further, after each jig is appropriately removed in this way, the lower end of the first tube member and the upper end of the second tube member may be covered with a heat insulating material. In this way, by covering with the heat insulating material with each jig removed, the heat insulating material is brought into close contact with the lower end of the first tube material and the upper end of the second tube material, and is covered without a gap. Is possible.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 schematically shows a cross section of a building 1 to be constructed with a soot pipe 2 to be described later. The building 1 has, for example, a plurality of levels from the first floor to the Nth floor, and in the illustrated form, the building 1 has a plurality of levels from the first floor (1F) to the seventh floor (7F). . On the floor of each floor (1F to 7F) of the building 1, spaces 1 'to 7' for providing the shaft 8 are formed in the vertical direction. As will be described later, these spaces 1 'to 7' are formed. A canopy pipe 2 is provided through.
[0021]
As will be described in detail later, the soot tube 2 is assembled by connecting a plurality of pipe members 10 as an example of a pipe material in series. In this embodiment, the pipe member 10 has a cylindrical shape with both ends open, and there are no significant protrusions on the outer surface of the pipe member 10, and the outer surface of the pipe member 10 is formed almost smoothly. As shown in FIG. 1, the pipe member 10 is appropriately carried into 1F of the building 1 using a carriage 11 or the like.
[0022]
A lifting device 12 for lifting the pipe member 10 is disposed on the top floor of the building 1 (the roof RF in the illustrated form). The lifting device 12 includes a winch 13 as a driving mechanism. When an operator 14 on the rooftop RF operates the switch 15, a wire 17 hanging from the rooftop RF via a pulley 16 is connected to each floor (1F) of the building 1. ˜7F) can be lifted and lowered through the spaces 1 ′ to 7 ′. A hook 18 capable of hooking and supporting the upper end of the pipe member 10 is attached to the lower end of the wire 17.
[0023]
FIG. 2 is a perspective view of the first jig 20 according to the embodiment of the present invention, and FIG. 3 is a perspective view of the second jig 21 according to the embodiment of the present invention. The first jig 20 includes a pair of clamp members 25 and 25 each having a half-divided cylindrical shape. Fixing pieces 26 and 26 are formed at both ends of the clamp member 25, respectively. The fixed piece 26 may be welded to both ends of the clamp member 25, or the fixed piece 26 may be integrally formed on both ends of the clamp member 25 by cold forging. As will be described later, each fixed piece 26 is provided with a hole 27 through which the bolt 40 is passed when the first jig 20 is attached in the vicinity of the lower end of the pipe member 10. Further, a male plate 28 is provided on the back surface of each clamp member 25 so as to protrude. As will be described later, each male plate 28 is provided with a circular hole 29 through which a shaft 45 passes when the first jig 20 and the second jig 21 are connected in a rotatable and fixed state. It is.
[0024]
Similarly, the second jig 21 includes a pair of clamp members 30 and 30 each having a half-cylinder shape. Fixing pieces 31 and 31 are formed at both ends of the clamp member 30, respectively. The fixed piece 31 may be welded to both ends of the clamp member 30 or may be integrally formed on both ends of the clamp member 30 by cold forging. As will be described later, each fixing piece 31 is provided with a hole 32 through which a bolt 42 is passed when the second jig 21 is attached in the vicinity of the upper end of the pipe member 10. Further, on the back surface of each clamp member 30, female plates 33, 33 arranged in parallel with a gap into which the male plate 28 can be inserted are provided so as to protrude. As will be described later, each female plate 33 has a circular hole 34 through which a shaft 45 passes when the first jig 20 and the second jig 21 are connected in a rotatable and fixed state. Each is provided.
[0025]
FIG. 4 is an explanatory diagram of the pipe member 10 in which the first jig 20 is attached near the lower end and the second jig 21 is attached near the upper end. FIG. 5 is a bottom view (bottom view) of the same pipe member 10, and FIG. 6 is a plan view (top view) of the same pipe member 10.
[0026]
A pair of semicircular clamp members 25, 25 are mounted so as to be sandwiched from both sides near the lower end of the pipe member 10, and the fixing pieces 26, 26 formed at the ends of the clamp member 25 are firmly secured by bolts 40. By stopping, the first jig 20 is attached near the lower end of the pipe member 10. In this case, the bolt 40 may be passed through the hole 27 provided in each fixed piece 26. By attaching the first jig 20 in the vicinity of the lower end of the pipe member 10 in this way, the male plate 28 having the circular holes 29 is provided on both sides in the vicinity of the lower end of the pipe member 10 so as to face each other at a position 180 ° apart. Each will protrude. In addition, the convex part 41 is provided in the outer side surface near the lower end of the pipe member 10, and when attaching the 1st jig | tool 20 in the vicinity of the lower end of the pipe member 10 in this way, The edge is positioned by being applied to the convex portion 41. Thus, the first jig 20 attached in the vicinity of the lower end of the pipe member 10 has no fear of falling down below the pipe member 10 because the lower edge of the clamp member 25 abuts the convex portion 41. Note that the protrusion thickness (height) of the protrusion 41 is sufficient to prevent the pipe member 10 from falling off, and is about the same as the thickness of the clamp member 25 or thinner than the thickness of the clamp member 25. .
[0027]
Similarly, a pair of semicircular clamp members 30, 30 are mounted so as to be sandwiched from both sides near the upper end of the pipe member 10, and the fixing pieces 31, 31 formed at the ends of the clamp member 30 are bolted 42. The second jig 21 is attached in the vicinity of the upper end of the pipe member 10. In this case, the bolt 42 may be passed through the hole 32 provided in each fixed piece 31. By attaching the second jig 21 in the vicinity of the upper end of the pipe member 10 in this way, the female plate 33 having the circular holes 34 is formed on both sides in the vicinity of the upper end of the pipe member 10 so as to face each other at a position 180 ° apart. Each will protrude. A convex portion 43 is also provided on the outer surface near the upper end of the pipe member 10, and when the second jig 21 is attached in the vicinity of the upper end of the pipe member 10 in this way, The edge is positioned by being applied to the convex portion 43. In this way, the second jig 20 attached in the vicinity of the upper end of the pipe member 10 has no fear of coming out above the pipe member 10 because the upper edge of the clamp member 30 abuts on the convex portion 43. The thickness (height) of the convex portion 43 is also sufficient if it prevents the pipe member 10 from falling off, and is about the same as the thickness of the clamp member 30 or thinner than the thickness of the clamp member 30.
[0028]
When connecting two pipe members 10, as shown in FIGS. 7 and 8, the first jig 20 is attached near the lower end of the upper pipe member 10, and the first jig 20 is attached near the upper end of the lower pipe member 10. 2 jig 21 is attached. Then, the upper and lower two pipe members 10 are connected through the first jig 20 and the second jig 21.
[0029]
In this case, as shown in FIG. 7, one male plate 28 formed on the first jig 20 attached in the vicinity of the lower end of the upper pipe member 10 and the first plate attached in the vicinity of the upper end of the lower pipe member 10. One female plate 33 formed on the two jigs 21 (in the illustrated example, the right male plate 28 in the first jig 20 attached in the vicinity of the lower end of the upper pipe member 10 and the lower pipe member 10 is connected to the upper pipe member 10 by rotating the lower pipe member 10 with respect to the upper pipe member 10. It is possible to connect freely. That is, when the upper and lower pipe members 10 and 10 are rotatably connected in this way, one female plate 33 formed on the second jig 21 attached in the vicinity of the upper end of the lower pipe member 10. , 33, one male plate 28 formed on the first jig 20 attached near the lower end of the pipe member 10 is inserted. Then, the positions of the circular holes 34 provided in the female plate 33 and the circular holes 29 provided in the male plate 28 are aligned, and the shaft 45 is passed through the circular holes 34 and the circular holes 29. Thereby, one male plate 28 of the first jig 20 and one female plate 33 of the second jig 21 are connected via the shaft 45, and the upper and lower pipe members 10, 10 are centered on the shaft 45. Thus, it is connected to be freely rotatable.
[0030]
Further, as shown in FIG. 8, after the lower pipe member 10 rotates and becomes perpendicular to the floor surface, the other one formed on the first jig 20 attached near the lower end of the upper pipe member 10 is The other female plate 33 (on the side that does not contribute to rotation) formed on the second jig 21 that is attached to the male plate 28 (on the side that does not contribute to rotation) in the vicinity of the upper end of the lower pipe member 10. In addition, both the male plates 28 formed on the first jig 20 attached in the vicinity of the lower end of the upper pipe member 10 by connecting them by the shaft 45 are attached in the vicinity of the upper end of the lower pipe member 10. 2. Connect to both female plates 33 formed on the jig 21 by the shaft 45 and connect the lower pipe member 10 to the upper pipe member 10 in a straight line in a more stable state. Is also possible. That is, when connecting the upper and lower pipe members 10 and 10 in series as described above, first, as described in FIG. 7, the first jig 20 is formed near the lower end of the upper pipe member 10. The other male plate 28 and one female plate 33 formed on the second jig 21 attached near the upper end of the lower pipe member 10 are rotatably connected via a shaft 45. Then, the lower pipe member 10 is rotated about the shaft 45 so that the lower end of the upper pipe member 10 and the upper end of the lower pipe member 10 face each other. As described above, when the upper and lower pipe members 10 are arranged in a straight line with the lower end of the upper pipe member 10 and the upper end of the lower pipe member 10 facing each other, they are attached near the upper end of the lower pipe member 10. In the gap between the other female plates 33, 33 formed on the second jig 21, the other male plate 28 formed on the first jig 20 attached near the lower end of the upper pipe member 10 is provided. The circular hole 34 inserted in the other female plate 33 and the position of the circular hole 29 provided in the other male plate 28 are exactly aligned. The thus-aligned circular hole 34 and circular hole 29 (the other side (that is, the side that does not serve as a pivot point for rotation) of the female plate 33 and the other side (that is, the side that does not contribute to the rotation). The shaft 45 is passed through the circular hole 29) provided in the male plate 28). As a result, the first jig 20 attached near the lower end of the upper pipe member 10 and the second jig 21 attached near the upper end of the lower pipe member 10 have two shafts 45 on the left and right sides. The upper and lower pipe members 10 and 10 are fixed and connected in series.
[0031]
As shown in FIG. 8, when the upper and lower pipe members 10, 10 are fixed in series via the first jig 20 and the second jig 21, the male plate 28 and the female plate 33 are fixed. In the first jig 20 attached in the vicinity of the lower end of the upper pipe member 10 so that a gap 46 can be formed between the inside of the pipe member 10 and the outer surface of the pipe member 10, An appropriate gap is formed between the outer surface and the second jig 21 attached in the vicinity of the upper end of the lower pipe member 10 between the female plate 33 and the outer surface of the pipe member 10. Appropriate gaps are formed. Thereby, when welding the upper and lower pipe members 10 and 10 as will be described later, a gap 46 formed between the inside of the male plate 28 and the female plate 33 and the outer surface of the pipe member 10 should be used. Thus, the lower end of the upper pipe member 10 and the upper end of the pipe member 10 can be welded over the entire circumference without leakage.
[0032]
Now, in the building 1 shown in FIG. 1, when constructing the pipe 2 from 1F to RF, first, the pipe member 10 is carried into the lowermost 1F using the carriage 11 or the like. Then, in the lifting device 12 disposed on the top floor RF of the building 1, the operator 14 operates the switch 15 to operate the winch 13, and first lowers the wire 17. Thus, the hook 18 at the lower end of the wire 17 is lowered to 1F, and the hook 18 is engaged with the upper end of the first pipe member 10 (first pipe member 10) placed on the carriage 11 at 1F. In this case, it is preferable to attach an appropriate hanging object 50 or the like to the upper end of the first pipe member 10 and engage the hook 18.
[0033]
After the engagement, as shown in FIG. 9, the operator 14 on the rooftop RF operates the switch 15 to operate the winch 13, and this time the wire 17 is gradually lifted. Thereby, the upper end of the first pipe member 10 engaged with the hook 18 via the hanging object 50 is gradually lifted, and the first pipe member 10 is horizontal on the floor surface of 1F until now. From the posture that has been placed, it is gradually started up and made into a vertical posture. When the posture of the pipe member 10 is first changed from horizontal to vertical in this manner, the lower end of the pipe member 10 moves smoothly with the carriage 11 placed on the floor surface of 1F. Is possible.
[0034]
Thus, when the lower end of the first pipe member 10 is lifted to a height at which the lower end of the first pipe member 10 is lifted above the floor of 1F, the first pipe member 10 is suspended in a substantially vertical posture by its own weight as shown in FIG. The operator 14 on the rooftop RF temporarily stops the operation of the winch 13 in such a state that the lower end of the first pipe member 10 is lifted to an appropriate height above the floor of 1F. On the other hand, the next pipe member 10 (second pipe member 10) is carried into the 1F of the building 1 in advance using the carriage 11 or the like.
[0035]
Next, as described above, the first lower end of the pipe member 10 that has been brought into a substantially vertical posture by being engaged with the upper end of the hook 18 at the lower end of the wire 17 via the hanging object 50 and being lifted up is set to 1F. The upper end of the next pipe member 10 that has been carried in is rotatably attached via the first jig 20 and the second jig 21. In this case, the operator 14 in 1F has one male plate 28 formed on the first jig 20 attached in the vicinity of the lower end of the upper pipe member 10 as described with reference to FIG. By connecting one female plate 33 formed on the second jig 21 attached in the vicinity of the upper end of the pipe member 10 by the shaft 45, the lower pipe member 10 can be rotated with respect to the upper pipe member 10. Can be connected to. Note that the first jig 20 and the second jig 21 are configured so that when the upper end of the next pipe member 10 is rotatably attached to the lower end of the first pipe member 10 as described above, The first jig 20 and the second jig 21 may be attached in advance near the lower end of the upper pipe member 10 and the lower pipe member 10. It may be attached in the vicinity of the upper end of each. In addition, when the first pipe member 10 is erected in this manner and then the upper end of the next pipe member 10 is pivotally attached to the lower end thereof, the operator 14 can move the next pipe member 10 placed on 1F. It is advisable to move the upper end of the pipe member 10 closer to the lower end of the first pipe member 10 by lifting it as necessary.
[0036]
Next, when the upper end of the next pipe member 10 is pivotally attached to the lower end of the first pipe member 10 via the first jig 20 and the second jig 21, the operator 14 on the rooftop RF is placed. Operates the switch 15 to operate the winch 13 and gradually raises the wire 17 again. Thus, as shown in FIG. 11, the upper end of the next pipe member 10 that is pivotally connected to the lower end of the first pipe member 10 via the first jig 20 and the second jig 21 is The pipe member 10 is gradually lifted, and the next pipe member 10 is gradually raised from the posture that has been placed horizontally on the floor surface of 1F until now, and gradually becomes a vertical posture. When the posture of the next pipe member 10 is changed from horizontal to vertical as described above, the operator 14 in 1F may guide the next pipe member 10 as appropriate. In this case, if the lower end of the next pipe member 10 is placed on the carriage 11 and supported so as to be able to run on the floor of 1F, the operator 14 does not have to support the weight of the pipe member 10, and the lower end of the pipe member 10 is smooth. Easy to work with.
[0037]
Then, as shown in FIG. 12, when the lower end of the next pipe member 10 is lifted up to a height at which the lower end of the next pipe member 10 is lifted above the floor of 1F, the next pipe member 10 is also hung in a substantially vertical posture by its own weight. As a result, the first pipe member 10 and the next pipe member 10 are both vertical, and both are substantially in a straight line. The operator 14 on the rooftop RF once again stops the operation of the winch 13 with the lower end of the next pipe member 10 raised to an appropriate height above the floor surface of 1F. On the other hand, the next pipe member 10 (second pipe member 10) is carried in advance to the first floor of the building 1 by using the carriage 11 or the like.
[0038]
Then, in such a state that the first pipe member 10 and the next pipe member 10 are substantially in a straight line, the first pipe member 10 is connected to the lower end of the first pipe member 10 via the first jig 20 and the second jig 21. The upper end of the next pipe member 10 is temporarily fixed. In this case, as shown in FIG. 12, the operator 14 in 2F has both the first jig 20 formed in the vicinity of the lower end of the upper pipe member 10 as described in FIG. By connecting the male plate 28 to both female plates 33 formed on the second jig 21 attached in the vicinity of the upper end of the lower pipe member 10 by the shaft 45, the upper pipe member 10 On the other hand, the lower pipe member 10 can be stably connected in a straight line. In addition, the length of each pipe member 10 is set to the ceiling height (1F floor of 1F) of the building 1 so that the operator 14 in 2F of the building 1 can smoothly perform the joining work between the pipe members 10. To 2F (height from floor to floor).
[0039]
And the above process is repeated suitably and the several pipe member 10 is joined in series suitably. In this way, as shown in FIG. 13, a plurality of (four in the illustrated form) pipe members 10 are sequentially fixed via the first jig 20 and the second jig 21, and the planned pipes are arranged. Assemble 2 It is preferable to attach a load-carrying fixture 51 to the lower side of the soot tube 2 assembled in this way and deposit the load of the soot tube 2 in the load-carrying fixture 51 to support it. Moreover, you may make it hold | suppress the circumference | surroundings of the assembled soot pipe 2 with the supporting member (backfilling member) 52 with which the space 1'-7 'of each floor (1F-7F) of the building 1 was mounted | worn.
[0040]
After the soot pipe 2 is assembled in this way, the ends of the pipe members 10 are welded and joined together. In this way, when the ends of the pipe member 10 are welded to each other, the upper and lower pipe members 10 and 10 are connected to each other by the first jig 20 and the second jig 21 as described above with reference to FIG. The lower end of the upper pipe member 10 and the pipe member are formed by utilizing a gap 46 formed between the inside of the male plate 28 and the female plate 33 and the outer surface of the pipe member 10 in a state where the pipe member 10 is fixed in series. It is possible to weld the upper end of 10 without leakage over the entire circumference.
[0041]
Then, the first jig 20 and the second jig 21 that temporarily fix the pipe members 10 to each other are welded so that the butted portions of the plurality of pipe members 10 are welded and communicated in series. As shown in FIG. 14, each pipe member 10 is removed from the vicinity of the upper end and the vicinity of the lower end. In this way, in the building 1, it is possible to construct the tub tube 2 having a shape that has substantially no protrusions on the surface and a smooth outer surface over 1F to RF. The lifting device 12 may be removed from the uppermost floor (the rooftop RF) of the building 1 by appropriately disassembling after the construction of the pipe 2. Reference numeral 52 denotes a state in which the through portion processing (backfilling) of the lifting opening formed in the floor slab is performed.
[0042]
And after removing the 1st jig | tool 20 and the 2nd jig | tool 21 in this way, a heat insulating material is coat | covered over the connection part of each pipe member 10, or the full length of the soot pipe 2. FIG. Thus, by covering with the heat insulating material with the first jig 20 and the second jig 21 removed, the heat insulating material is brought into close contact with the surface even in the vicinity of the connecting portion between the pipe members 10. , It is possible to coat without gaps.
[0043]
According to the construction method of this embodiment, since the plurality of pipe members 10 can be arranged in a straight line with their own weight and joined simply by lifting the pipe member 10, the trough pipe 2 can be constructed with less labor. And the constructed soot pipe 2 is made into the soot pipe 2 having a smooth outer surface with substantially no protrusions on the surface by removing the first jig 20 and the second jig 21. Can do. For this reason, even in the vicinity of the connecting portion between the pipe members 10, it is possible to cover the heat insulating material in close contact with the surface.
[0044]
As mentioned above, although an example of the preferred embodiment of this invention was demonstrated, this invention is not limited to the form shown here. For example, when the pipe members 10 are pivotably attached, the first jig 20 and the second jig 21 may be attached near the lower end or near the upper end of the pipe member 10. The first jig 20 and the second jig 21 may be attached in advance near the lower end or the upper end of the pipe member 10 before the pipe is lifted. In FIG. 10, after the first pipe member 10 is lifted and brought into a substantially vertical posture, the first pipe member 10 is connected to the lower end of the first pipe member 10 via the first jig 20 and the second jig 21. An example in which the upper end of the pipe member 10 is rotatably attached has been described, but before the first pipe member 10 (first pipe member) is lifted, the lower end of the first pipe member 10 (first pipe member) is Via the first jig 20 and the second jig 21, the upper end of the next pipe member 10 (second pipe material) may be rotatably attached in advance.
[0045]
Further, the step of welding and joining the pipe members 10 may be performed immediately after temporarily fixing the pipe members 10 to each other via the first jig 20 and the second jig 21. For example, After three or more pipe members 10 are temporarily fixed via the first jig 20 and the second jig 21, the respective fixed portions may be welded together and joined. Further, the step of removing the first jig 20 and the second jig 21 after joining each fixed portion may be performed immediately after joining the pipe members 10 together, but a predetermined number of pipe members 10 are formed. The first jig 20 and the second jig 21 may be removed simultaneously from the respective joint portions after joining by welding to form the soot tube 2. Further, the step of covering the heat insulating material may be performed for each joint portion between the pipe members 10 or may be performed simultaneously after forming the tub tube 2.
[0046]
In addition, for example, 10 floors of 40 stories are set as one unit, welding work between the pipe members 10, removal work of the first jig 20 and the second jig 21, and heat insulation coating work (painting work) are performed. Each work may be performed at an arbitrary timing. It is also possible to perform each work in units of progress of work in one day.
[0047]
When the first jig 20 is attached in the vicinity of the lower end of the pipe member 10 or the second jig 21 is attached in the vicinity of the upper end, clamping between the clamp members 25 and 25 or clamping between the clamp members 30 and 30 is performed. If it is insufficient, the first jig 20 and the second jig 21 may come off from the end of the pipe member 10. For this problem, as described above with reference to FIG. 4, it is effective to provide the convex portion 41 on the outer surface near the lower end of the pipe member 10 and provide the convex portion 43 on the outer surface near the upper end of the pipe member 10. is there. The convex portions 41 and the convex portions 43 can be easily formed by simply attaching a steel piece or the like to an appropriate location on the outer surface of the pipe member 10 by welding or the like. Further, it is sufficient that the convex portions 41 and 43 have the same thickness as the clamp members 25 and 30 or thinner than the clamp members 25 and 30. And when providing the convex part 43 in several places, about 1.5 cm is enough at most. In short, the first jig 20 and the second jig 21 are prevented from falling off from the end of the pipe member 10 and are connected via the first jig 20 and the second jig 21. Any material capable of supporting a weight of 10 can be used. Further, the pipe member 10 itself can be bulged by doweling or the like, and the convex portions 41 and 43 can be formed. Thus, by making the thickness of the convex part 41 and the convex part 43 as small as possible, it becomes possible to cover the heat insulating material as close as possible to the surface in the vicinity of the connection part between the pipe members 10.
[0048]
As shown in FIG. 15, in the first jig 20, one end of a pair of clamp members 25, 25 each having a half-cylinder shape is connected by a hinge 55 so that it can be opened and closed. Fixing pieces 26 and 26 provided with holes 27 through which the bolts 40 pass may be formed at the ends. The first jig 20 shown in FIG. 15 has an advantage that it can be easily attached and detached near the lower end of the pipe member 10 by opening and closing the clamp members 25 and 25 around the hinge 55.
[0049]
Similarly, as shown in FIG. 16, in the second jig 21, one end of a pair of clamp members 30, 30 each having a half-cylinder shape is connected by a hinge 56 so as to be freely opened and closed. Fixing pieces 31 and 31 provided with holes 32 through which bolts 42 pass may be formed at the other end of 30. The second jig 21 shown in FIG. 16 also has an advantage that it can be easily attached and detached near the upper end of the pipe member 10 by opening and closing the clamp members 30 and 30 around the hinge 56.
[0050]
Further, the fixing pieces 26 and 26 and the fixing pieces 31 and 31 can be fixed using bolts 40 and 42, or can be fixed using an appropriate clamp or clip.
When using clamps or clips, the holes 27 and 32 can be omitted.
[0051]
In the above description, an example in which the first jig 20 is attached near the lower end of the pipe member 10 and the second jig 21 is attached near the upper end is shown. For example, as shown in FIG. It is also possible to fix the male plate 28 having the circular holes 29 on both sides near the lower end of 10 and omit the first jig 20. In this case, the male plate 28 remains even after the construction of the pipe 2, but by forming the male plate 28 as small as possible, the heat insulating material should be on the surface in the vicinity of the connecting portion between the pipe members 10. It is possible to cover it in close contact. Similarly, although not shown, it is also possible to fix the female plate 33 having the circular holes 34 on both sides near the upper end of the pipe member 10 and omit the second jig 21.
[0052]
In addition, the pipe material for assembling the soot tube 2 is not limited to the pipe member 10 and may be a square duct, or a duct having a circular cross-sectional shape such as a spiral duct. Moreover, although the example of constructing a pipe over 1F-RF was demonstrated in the form of illustration, it is not restricted to the case where a duct is assembled from the first floor to the rooftop, and it is higher than that from any floor (including the basement). It may be something like assembling the tub tube 2 up to the level. In addition, the present invention can be applied not only to newly constructing a building 1 but also to renewing a duct 2 in an existing building 1.
[0053]
【The invention's effect】
According to the present invention, the first tube and the second tube can be arranged in a straight line and joined in series by simply lifting them up, and the dredger can be constructed with less labor. In addition, by removing each jig, it is possible to cover the heat insulating material as close as possible to the surface of the pipe material without any protrusions. Also, at construction sites, new pipes can be installed and updated even within narrow shafts. Furthermore, each removed jig can be reused and used at other construction sites, so resources can be used effectively and contribute to the maintenance of the global environment.
[Brief description of the drawings]
FIG. 1 is a drawing schematically showing a section of a building to be constructed from now on.
FIG. 2 is a perspective view of a first jig according to the embodiment of the present invention.
FIG. 3 is a perspective view of a second jig according to the embodiment of the present invention.
FIG. 4 is a front view of a pipe member in which a first jig is attached near the lower end and a second jig is attached near the upper end.
FIG. 5 is a bottom view (bottom view) of a pipe member in which a first jig is attached in the vicinity of the lower end.
FIG. 6 is a plan view (top view) of a pipe member having a second jig attached in the vicinity of the upper end.
FIG. 7 is a partially enlarged view showing a state in which pipe members are rotatably connected via a first jig and a second jig.
FIG. 8 is a partially enlarged view showing a state in which pipe members are temporarily fixed in series via a first jig and a second jig.
FIG. 9 is an explanatory view showing a state in which a hook is engaged with an upper end of a first pipe member.
FIG. 10 is a view for explaining a state in which the upper end of the next pipe member is rotatably attached to the lower end of the first pipe member in a substantially vertical posture through the first jig and the second jig. FIG.
FIG. 11 is an explanatory diagram of a state in which the next pipe member is gradually raised and gradually brought into a vertical posture, and shows a state in which the lower end of the pipe member is supported so as to be able to run by being placed on a carriage. .
FIG. 12 illustrates a state in which the first pipe member and the next pipe member are substantially aligned, and an operator in 2F temporarily fixes both in series via the first jig and the second jig. FIG.
FIG. 13 is an explanatory view of a steel pipe constructed in a building.
FIG. 14 is an explanatory view of a soot tube from which a first jig and a second jig have been removed.
FIG. 15 is a perspective view of a first jig in which clamp members are connected to each other by a hinge so as to be freely opened and closed.
FIG. 16 is a perspective view of a second jig in which clamp members are connected to each other by a hinge so as to be freely opened and closed.
FIG. 17 is a front view of a pipe member in which a jig according to another embodiment of the present invention is attached in the vicinity of the upper end.
[Explanation of symbols]
1 building
2 steel pipe
1’-7 ’space
8 Shaft
10 Pipe member
11 carts
12 Lifting device
13 winches
14 Operator
17 wire
20 First jig
21 Second jig
25, 30 Clamp member
26,31 fixed piece
28 Male Plate
33 Female plate

Claims

A method of constructing a pipe by joining two or more pipes in series using a first jig and a second jig ,
The first jig includes a pair of clamp members, and the first jig is attached near the lower end of the pipe member by attaching the pair of clamp members so as to sandwich the vicinity of the lower end of the pipe member. The lower edge of the clamp member of the first jig attached in the vicinity of the lower end of the pipe member abuts on the convex portion provided on the outer surface in the vicinity of the lower end of the pipe member,
The first pipe is lifted from above the building to make the first pipe almost vertical by its own weight, and attached to the first jig attached near the lower end of the first pipe and the upper end of the second pipe. By pivotally attaching the upper end of the second pipe member to the lower end of the vertical first pipe member via the second jig, and subsequently lifting the second pipe member up to the first pipe member The first pipe and the second pipe are made substantially straight by making the second pipe substantially vertical by its own weight, and in the almost straight state, the first and second jigs are passed through the first jig and the second jig. Then, the upper end of the second pipe member is temporarily fixed to the lower end of the first pipe member, the lower end of the first pipe member and the upper end of the second pipe member are joined, and then the first jig and the second jig are joined. A method for constructing a pipe.

A method of constructing a pipe by joining two or more pipes in series using a first jig and a second jig ,
The first jig includes a pair of clamp members, and the first jig is attached near the lower end of the pipe member by attaching the pair of clamp members so as to sandwich the vicinity of the lower end of the pipe member. The lower edge of the clamp member of the first jig attached in the vicinity of the lower end of the pipe member abuts on the convex portion provided on the outer surface in the vicinity of the lower end of the pipe member,
The first pipe is lifted from above the building so that the first pipe is made almost vertical by its own weight, and the first jig previously attached in the vicinity of the lower end of the first pipe and the upper end of the second pipe in advance. The upper end of the second pipe member is rotatably attached to the lower end of the first pipe member made vertical through a second jig attached in the vicinity, and the second pipe member is attached to the first pipe member. Then, the second pipe is made substantially vertical by its own weight so that the first pipe and the second pipe are made substantially straight, and the first jig and the second pipe are made substantially straight. After temporarily fixing the upper end of the second pipe member to the lower end of the first pipe member through the jig 2 and joining the lower end of the first pipe member and the upper end of the second pipe member, the first jig A tub tube construction method, wherein the second jig is removed.

The first and second jigs are removed and then the lower end of the first pipe member and the upper end of the second pipe member are covered with a heat insulating material.竪 pipe construction method.

  A pipe construction jig used in the pipe construction method according to claim 1, 2 or 3,
  A first jig detachably attached to the vicinity of the lower end of the first pipe member, and a second jig detachably attached to the vicinity of the upper end of the second pipe member,
  The first jig includes a pair of clamp members, and the first jig is attached near the lower end of the pipe member by attaching the pair of clamp members so as to sandwich the vicinity of the lower end of the pipe member. The lower edge of the clamp member of the first jig attached in the vicinity of the lower end of the pipe member abuts on the convex portion provided on the outer surface in the vicinity of the lower end of the pipe member,
  The first and second jigs are connected in a state where they can rotate with each other and in a temporarily fixed state.