JP3732721B2

JP3732721B2 - Tower-like structure leg installation method and equipment used therefor

Info

Publication number: JP3732721B2
Application number: JP2000207853A
Authority: JP
Inventors: 成田邉; 孝一湯井; 快充竹内; 保夫田村; 達也荒井
Original assignee: Tokyo Electric Power Co Inc
Current assignee: Tokyo Electric Power Co Holdings Inc
Priority date: 2000-07-10
Filing date: 2000-07-10
Publication date: 2006-01-11
Anticipated expiration: 2020-07-10
Also published as: JP2002021097A

Description

【０００１】
【発明の属する技術分野】
この発明は、地表面から掘削坑を設けて、当該掘削坑内に塔状構造物の略「く」の字型に曲がった脚材を挿入して、コンクリートを打設し、当該脚材を固定する、脚材据付け工法及びその装置に関するものであり、掘削坑内に作業員が入ることなく、地上から安全に据付け位置に設置できるものである。
【０００２】
【従来の技術】
図１９に示すように、鉄塔等の塔状構造物は、地上部分の上部構造Ａと、土中に埋設された基礎構造Ｂから構成されている。この基礎構造Ｂは、地表面から掘削坑を掘り、その後に、上部構造と基礎構造を連結するための、上部構造の最下部節部材である脚材を掘削坑内に挿入、固定し、その後に、コンクリートを掘削坑内に流し込んでコンクリートを硬化させて構築する。また、この図に示すように、塔状構造物の上部構造が中心方向に傾斜している場合、一般に、脚材は地上付近で略「く」の字に曲がっている。
この塔状構造物の最下部節である脚材は、上部を組み立てる際に部材の水平不良、部材間の穴ずれ等が発生しないよう、基礎構造の掘削坑内に傾斜角度と中心位置を正確に据付けなければならない。
具体的には、図２０に示すように、脚材の傾斜角度調整は、「く」の字に曲がった脚材（イ）を支持する地上部の鋼パイプ（ロ）の長さと掘削坑（ハ）内の床盤（ニ）に設置した据付け調整用ブロック（ホ）の高さを作業員が声をかけ合いながら調整することにより行い、また、中心位置調整は掘削坑（ハ）の内部に作業員が立入り、脚材（イ）の底部をバールで適宜ずらす等して行っていた。
【０００３】
また、掘削坑内に作業員が入ることなく、塔状構造物を構築することは、例えば、特開平１０−３１７３９１号公報に記載されているように、当業界では、試みられてきた。しかしながら、この試みは、まっすぐな下部の脚材をまずコンクリートで固めた後、上部の脚材をくの字型に曲がった方向に取り付ける、いわば、上下部の脚材どうしを現場で方向調整しながら連結するものであって、くの字型に曲がった脚材をそのまま現場で構築するのではない。
【０００４】
【発明が解決しようとする課題】
前者の工法では、まず、掘削坑（ハ）を予め深く掘り、コンクリートを打設して、上記据付け調整用ブロック（ホ）を置く水平な床盤（ニ）を作らなければならない。そのため手間がかがり、かつコンクリート硬化のための時間を要していた。また、鋼パイプ（ロ）の長さの調整や、据付け調整用ブロック（ホ）の高さの調整は、異なった場所で夫れ夫れ行うため、据付けブロックの作業員の指示通りに鋼パイプ調整の作業員が長さを調整するのは難しく、極めて煩雑でかつ手間のかかる作業であった。また、作業員が掘削坑（ハ）の底部に入り、据付け調整用ブロック（ホ）の高さの調整をしたり、脚材（イ）の底部をバールでずらす作業をしなければならず、これらの作業は多大な労力を要す割に所望の位置に容易に設置できず、長時間の作業となる等の欠点があった。
しかもこの方法では、掘削坑（ハ）の内径が小さくなると、掘削坑（ハ）内の作業スペースが十分に確保できなくなるので、脚材据付けが困難又は、不可能であった。このため、作業スペース分だけ内径を大きく掘削する必要があり、その分、掘削時間、ひいては塔状構造物の建設時間が長くなり、さらには建設コストまで高くなってしまう。
また、後者の、特開平１０−３１７３９１号公報に記載された工法では、作業員が掘削坑に入る必要はないが、下部の脚材がコンクリートで固まるまで待たねば、上部の脚材を取り付けることができないため、効率よく、短時間に塔状構造物を構築することはできない。
一般に、塔状構造物は、山岳地帯等、足場の悪い所に設置する場合が多いために、できるだけ、上記のように「く」の字方向に現場で調整する過程を極力省略し、予め工場で製造しておくことが好ましい。
【０００５】
そこでこの発明は、これらの点に鑑みて為されたものであり、掘削坑内部に作業員が入らずに、地上で作業ができ、作業が極めて容易、かつ迅速にできる、塔状構造物の脚材据付け工法及びその装置を提供し、上記課題を解決するものである。
【０００６】
【課題を解決するための手段】
請求項１項の発明は、地表面から掘削坑を設けて、当該掘削坑内に搭状構造物の略「く」の字型に曲がった脚材を挿入して、コンクリートを打設し、当該脚材を固定する、脚材据付け工法において、掘削坑の地表面の開口部を囲むように架台を設け、この架台に脚材を吊るしてこの状態で掘削坑内に作業員が入ることなく、脚材の傾斜角度調整及び中心位置調整を行い、並びに、脚材の姿勢及び位置を固定させ、上記脚材の傾斜角度調整は、架台に設けた位置調整装置から吊り下げた吊り下げ棒の下端に吊り下げ治具を設け、当該吊り下げ治具で脚材を吊り下げ、この吊り下げ治具又は吊り下げ棒の脚材に対する取付け位置をずらすことにより行う、搭状構造物の脚材据付け工法とした。そして、請求項２項の発明は、上記脚材の中心位置調整は、架台に設けた位置調整装置から吊り下げた吊り下げ棒の下端に吊り下げ治具を設け、当該吊り下げ治具で脚材を吊り下げ、この吊り下げ治具又は吊り下げ棒の上下方向への移動、水平方向への移動又は当該吊り下げ治具の回転移動の何れか一つ又は複数を行う、請求項１項記載の搭状構造物の脚材据付け工法とした。
【０００７】
また、請求項３項の発明は、地表面から掘削坑を設けて、当該掘削坑内に搭状構造物の略「く」の字型に曲がった脚材を挿入して、コンクリートを打設し、当該脚材を固定する、脚材据付け工法において、掘削坑の地表面の開口部を囲むように架台を設け、この架台に脚材を吊るしてこの状態で掘削坑内に作業員が入ることなく、脚材の傾斜角度調整及び中心位置調整を行い、並びに、脚材の姿勢及び位置を地表面から挿入した固定ジャッキで支持した状態で掘削坑内にコンクリートを打設し、上記脚材の傾斜角度調整は、架台に設けた位置調整装置から吊り下げた吊り下げ棒の下端に吊り下げ治具を設け、当該吊り下げ治具で脚材を吊り下げ、この吊り下げ治具又は吊り下げ棒の脚材に対する取付け位置をずらすことにより行う、搭状構造物の脚材据付け工法とした。
【０００８】
また、さらに、請求項４項の発明は、掘削坑内に搭状構造物の略「く」の字型に曲がった脚材を挿入し、該脚材を吊り下げた状態で脚材の傾斜角度、及び、中心位置を調整した後、別設のコンクリート打設手段によりコンクリートを打設して、当該脚材を固定する、脚材据付け装置において、当該脚材据付け装置は、上記掘削坑の地表面の開口部を囲むように設けた架台、該架台に取り付けた上記脚材の位置調整装置、吊り下げ治具、及び上記脚材の固定装置から構成されており、上記位置調整装置は、吊り下げ棒を介して上記脚材の吊り下げ治具を支持しているとともに、上記吊り下げ治具により脚材を吊り下げたまま、上記吊り下げ治具の上下方向を調整する高さ調整装置、上記吊り下げ治具を水平移動する面対角寸法調整装置、及び、上記吊り下げ治具を水平回転させる軸回転調整器を配設しており、上記脚材の吊り下げ治具は、脚材の傾斜角度を調整する傾斜角度調整器を具備しており、上記脚材の固定装置は、上記掘削坑内で上記脚材の上下部の少なくとも２箇所以上において、脚材の外周と掘削坑内壁に当接するように拡幅するジャッキ機構を有し、これらの構成により掘削坑内に作業員が入ることなく、脚材の姿勢や位置を固定できる装置である、搭状構造物の脚材据付け装置とした。
【０００９】
請求項５項の発明は、上記請求項４項に記載の装置において、上記高さ調整装置は、上記脚材の吊り下げ治具調整装置の台板、及び上板を貫通して配設された上記吊り下げ棒の高さ調整ナットの回転により、上記吊り下げ棒の長さを調整する機構とした。また、請求項６項の発明は、上記請求項４項又は５項の何れかに記載の装置において、上記面対角寸法調整装置は、上記位置調整装置の台板上の複数のフリーベアリングに載置した上板の４側面を、ボルトの回転により移動調整する機構とした。また、請求項７項の発明は、上記請求項４項、５項又は６項の何れかに記載の装置において、上記軸回転調整器は、上記上板上において、上記吊り下げ棒からの突片をボルトの回転により、上記吊り下げ棒を回転する機構とした。また、請求項８項の発明は、上記請求項４項、５項、６項又は７項の何れかに記載の装置において、上記傾斜角度調整器は、上記脚材の吊り下げ治具に取り付けた上記吊り下げ棒の位置を、調整ボルトの回転によりずらすことにより調整する機構とした。
【００１０】
【発明の実施の形態例】
以下この発明の実施の形態例を図に基づいて説明する。図１は、この発明の概略を理解しやすくするために、クレーンで吊り下げる工程を省略して、作業員が掘削坑に入ることなく、「く」の字型に曲がった脚材４を据付け台３の調整装置１２から、脚材吊り下げ治具８を介して掘削坑内（図１ではこの掘削坑内に、後述する円筒状の掘削杭２を挿入したものである。）に垂下したところを示したものである。脚材４は、上下２個の振れ止めジャッキ２３（他の１個は脚材４の裏側のため省略）、及び地表面１の振れ止め２２により、揺れが防止される構成になっている。地表面１の振れ止め２２は、従来技術のように脚材４の位置を調整するものではなく、単に脚材４の揺れを止める治具である。図１により、掘削坑に作業員が入ることなく、脚材４を掘削坑内に固定するこの発明の概略が理解されるであろう。以下では、このような状態に脚材４を垂下して、固定するまでの工程を説明する。
【００１１】
まず、図２に示すごとく、地表面１に穴を掘削し、当該穴に円筒状の掘削杭２を、上方の開口縁が地表面１から一定長突出するように挿入する。そして、この掘削杭２の地表面１から一定長突出した開口縁を囲むように、地表面１上に櫓型の据付け架台３を設置する。そして、この据付け架台３の上から、「く」の字型の脚材４を、クレーンで吊り下ろし、当該脚材４の下部を掘削杭２内に入れる。このクレーンでの脚材４の吊り下げは、脚材４の上端のフランジ部４ａに着脱自在に設けたアイボルト５に玉掛けワイヤー６の下端を係止し、当該玉掛けワイヤー６の上端をクレーンのフック７に掛けて、吊り下げる。図３は、脚材４の吊り下げ状態を見やすくするために、図２の左側面から見た図である。図３に示すごとく、当該脚材４の上端のフランジ部４ａが、据付け架台３内に降りた状態で、当該フランジ部４ａに、脚材吊り下げ治具８を固定し、この脚材吊り下げ治具８に、据付け架台３の両側の吊り下げ金具９に上端を固定した玉掛けワイヤー１０の下端を係止し、脚材４の重量を据付け架台３に移し、仮吊りとする。そこでフランジ部４ａからアイボルト５を外し、クレーンのフック７をフリーにする。
【００１２】
次に、図４に示すように、このフリーになったクレーンのフック７に、２本の腕木１１を下面に固定した調整装置１２の吊り上げ用アイナット１３に下端を係止した玉掛けワイヤー１４の上端を掛け、上記調整装置１２から垂下した吊り下げ棒１５の下端を、図６のように、上記脚材吊り下げ治具８の上端の方にボルト止めする。そして、調整装置１２の高さ調整ナット１６を回転させて、吊り下げ棒１５の垂下長を調整し、脚材４の重量が上記調整装置１２に移ったら、仮吊りに使用していた玉掛けワイヤー１０を外す。そして図５に示すように、上記調整装置１２の２本の腕木１１を据付け架台３の上にボルト止めする。
【００１３】
図６乃至図８は、図２と同じ側面から見たところを示している。図６に示すように、脚材４の上端からさげふり１７を掘削杭２内に垂下し、予め脚材４の側面にマークしておいたころび測定用ポンチマークに折尺１８をあわせて、当該脚材のころび（傾斜角）寸法を測定し、許容範囲外である場合は、上記脚材吊り下げ治具８のころび調整ボルト４０を操作して、脚材４のフランジ部４ａに対する脚材吊り金具１９（又は吊り下げ棒１５）の位置をずらし、ころび調整する。
【００１４】
また、図７に示すように、レベル等での視準線に対する脚材吊り下げ治具８の位置を折尺１８を当てて測定し、上記調整装置１２の高さ調整ナット１６をスパナ等（図示省略）で回転させ、これにより、調整装置１２から垂下した吊り下げ棒１５の長さが変化し、当該吊り下げ棒１５に吊り下げられた脚材４の高さ調整を行う。また、次に掘削杭２内の脚材４を水平方向に動かして、予め定められた位置に移動させる。それには、図８に示すように、上記調整装置１２の４個の面対角寸法調整ボルト２０を回して位置を定める。また、面・対角寸法に伴い、必要なまいまい（軸回転）調整は、上記調整装置１２に設けたまいまい(軸回転 )調整器２１で行う。
【００１５】
そして、この状態の脚材４の姿勢を維持するため、図１に示すように、鋼パイプから成る振れ止め２２を脚材４の上端に当てておく。そして振れ止めジャッキ２３を脚材４の外周と掘削杭２の内壁との間に挿入する。この振れ止めジャッキ２３は、図１及び図９に示すように、掘削杭２の内部の脚材４の上下部の夫れ夫れ三箇所で、脚材４の外周と掘削杭２の内壁に当接するように、当該振れ止めジャッキ２３の幅を広げて調整する。これにより、掘削杭２の内部で、脚材４全体が固定される。そしてこの状態で、掘削杭２と脚材４との間にコンクリートを打設し、脚材４の下部を地中に固定し、据付けが完了する。その際、下部の振れ止めジャッキ２３については、コンクリートに埋設しないようにするため、コンクリートの打設位置に合わせて上方に移動させながら、コンクリートを打設する。
【００１６】
次に、上記の方法に使用した、装置ないし機器の構造について説明する。図１０ないし図１２は、上記調整装置１２を示し、この調整装置１２は、上述のように間隔を開けて平行に並べた２本の腕木１１の中央部に、当該調整装置１２の台板２５をこれらの腕木１１に股がるように載せて固定されている。そしてこの台板２５の中央部には、大径の透孔２６が設けられ、この透孔２６の周囲に複数のフリーベアリング２７が設けられ、これらのフリーベアリング２７の上に、上記まいまい調整器２１や高さ調整ナット１６を設けたほぼ四角形の上板２８が移動自在に載っている。
【００１７】
また、上記台板２５の四方の外周縁近くには、横向きの貫通孔及びこの貫通孔に続くナット２９ａを有する縦板２９が夫れ夫れ相対向して設けられ、これら四方の各縦板２９の貫通孔及びナット２９ａに上記面対角寸法調整ボルト２０が螺着、貫通している。これらの面対角寸法調整ボルト２０の先端が対向している上板２８の各端縁には、当接板３０が固定されている。従って相対向する面対角寸法調整ボルト２０の一方を緩め、他方を締め付ければ、上板２８は当該ボルト２０に押されて緩めた面対角寸法調整ボルト２０の方向に、フリーベアリング２７の上を滑って移動する。それ故、４つの面対角寸法調整ボルト２０を緩めたり締め付けたりして、当該調整装置１２そのものの面寸法、及び対角寸法を調整できる。
【００１８】
また、上記吊り下げ棒１５は上記まいまい調整器２１の中を通って上方に突出し、この上端部に上記高さ調整ナット１６が螺着されており、また下方に突出した吊り下げ棒１５は上記台板２５の透孔２６を貫通して、２つの腕木１１の間を通り、当該調整装置１２の下方に垂下している。また、まいまい調整器２１内の吊り下げ棒１５は、キーとキー溝を設けることによりまいまい調整器２１に対して上下に移動自在であるが、水平方向の回転は阻止され、まいまい調整器２１と一体に回転する。このまいまい調整器２１の外周一側には、突片２１ａが突設され、上記縦板２９、ナット２９ａ、及び面対角寸法調整ボルト２０と同様な構造の縦板３１、ナット３１ａ及び調整ボルト３２の組合せが２対、突片２１ａを挟んで相対向して設けられている。さらに台板２５の四隅には、上記吊り上げ用アイナット１３が設けられている。
【００１９】
これらの構造により、高さ調整ナット１６を回わすと、まいまい調整器２１はその突片２１ａがその両側の調整ボルト３２に回転を阻止され、それ故吊り下げ棒１５が上方又は下方に移動し、吊り下げ棒１５に吊り下げられた脚材吊り治具８及び脚材４の位置も上下し、これにより高さ調整ができる。また、相対向する上記調整ボルト３２の一方を緩め、他方を締め付ければ、突片２１ａが押されて動き、吊り下げ棒１５はまいまい調整器２１とともに回転する。
【００２０】
次に、上記脚材吊り下げ治具８の構造を図１３乃至図１６に基づいて説明する。この脚材吊り下げ治具８は、アングル材３３を相対向して並べ、これらのアングル材３３に支持板３４を渡して、一体化している。そしてこの各アングル材３３は上記脚材４のフランジ部４ａ上面にボルト止めされ、また、これらのアングル材３３に渡した脚材吊り金具１９の各脚部１９ａがアングル材３３の長手方向に一定巾移動自在となっている。これは、この脚材吊り金具１９の各脚部１９ａの下端外側には短円柱３５が一体に固定され、この短円柱３５及び脚部１９ａを貫く透孔を設け、上記各アングル材３３に、このアングル材３３の長手方向に沿って長孔３６を設け、これらの各アングル材３３の内側からボルト３７を長孔３６に通し、さらに上記各脚部１９ａ及び短円柱３５の透孔に通して、突出端でナット３８を螺着している。
【００２１】
そして上記各長孔３６の両脇のアングル材３３の外側に、ボルト支持片３９を突設し、これらの各ボルト支持片３９のネジ孔にボルト４０を螺着、貫通させ、これらの相対向する２つのボルト支持片３９に螺着した各ボルト４０を締め付けたり、緩めたりすることにより、これらのボルト４０が脚材吊り金具１９の脚部１９ａの短円柱３５の脇を押し、脚材吊り金具１９を各アングル材３３の長手方向に移動自在となっている。また、この脚材吊り金具１９の中央部には上記吊り下げ棒１５の下端が固定されている。
【００２２】
また、図１７及び図１８は上記振れ止めジャッキ２３の構成を示し、パンタグラフ状のジャッキ本体４１の上端から上方に伸びた操作軸４２が、パイプ４３に被冠されており、このパイプ４３の上端から突出した操作軸４２の上端にジャッキハンドル４４を設けている。またパイプ４３の外周一側には、フック４５が設けられ、当該フック４５を掘削杭２の上端に係止して上記ジャッキハンドル４４を回すと、操作軸４２が回転し、ジャッキ本体４１が開いたり、閉じたりする構成となっている。
【００２３】
なお、上記実施の形態例の工法では、地表面１から穴を掘って掘削坑とし、この掘削坑内に円筒状の掘削杭２を挿入しているが、この様に掘削杭２を設けず、掘削坑のままでも使用出来る。また、上記実施の形態例の工法では、脚材４を所望の位置、及び姿勢にした状態を保持するため、振れ止めジャッキ２３を用いたが、これに限らず、適宜のものを掘削坑の内周と脚材の外周との間に詰めて固定する等、他の適宜の方法が考えられる。
【００２４】
【発明の効果】
請求項１項、２項、４項、５項、６項、７項及び８項の各発明は、「く」の字型に曲がった脚材の据付け寸法調整、及び固定作業が地上で可能であり、掘削坑内に作業員が立ち入る必要がない。このため、作業時の安全性が向上する。しかも従来のような地上と掘削坑内の２ヵ所での同時作業がなく、従って掘削坑の上下で調整し合う必要がないので、作業が容易で、短時間の作業が可能となる。また、作業員が坑内に昇降する必要がないので、作業員の労力も軽減される。また、脚材は据付け架台に吊してその位置や姿勢を調整するため、脚材に作用する摩擦力が軽減されるので、微調整が容易に可能である。このため、調整作業がスムーズに行え、作業効率が良い。また、調整時及び固定時にも大きな労力を必要としないので、この面からも作業員の労働負担が軽減される。また、さらに据付け調整用ブロックを掘削坑内に設置する必要がないので、予め掘削坑を深く掘り、コンクリートを打設して床盤を作る必要が無く、坑内充填コンクリートの打ち継ぎ省略が可能であるうえ、掘削坑の内径を小さくすることができるので、掘削時間の短縮や、坑内充填コンクリート量の減少も達成することができる。このため、施工品質の向上、作業工程の短縮、建設工事費の削減が図れる。
【００２５】
また、請求項３項の発明は、上記請求項１項の発明の効果に加え、脚材を所定の姿勢、位置に固定した状態を維持するため、振れ止めジャッキを用いて、地上から容易に当該脚材を掘削坑内に固定でき、その後のコンクリート打設時にも、脚材がずれたりする恐れがない。
【図面の簡単な説明】
【図１】この発明の実施の形態例の工法において、脚材の姿勢、位置を調整後、固定した状態を示す説明図である。
【図２】この発明の実施の形態例の工法における第１工程を示す説明図である。
【図３】この発明の実施の形態例の工法における第２工程を示す説明図である。
【図４】この発明の実施の形態例の工法における第３工程を示す説明図である。
【図５】この発明の実施の形態例の工法における第４工程を示す説明図である。
【図６】この発明の実施の形態例の工法における第５工程を示す説明図である。
【図７】この発明の実施の形態例の工法における第６工程を示す説明図である。
【図８】この発明の実施の形態例の工法における第７工程を示す説明図である。
【図９】この発明の実施の形態例の工法において、脚材の姿勢、位置を調整後、固定した状態を示す平面説明図である。
【図１０】この発明の実施の形態例の工法に使用する調整装置の平面図である。
【図１１】この発明の実施の形態例の工法に使用する調整装置の正面図である。
【図１２】この発明の実施の形態例の工法に使用する調整装置の、図１１のＡ部詳細図である。
【図１３】この発明の実施の形態例の工法に使用する脚材吊り下げ治具の平面図である。
【図１４】この発明の実施の形態例の工法に使用する脚材吊り下げ治具の正面図である。
【図１５】この発明の実施の形態例の工法に使用する脚材吊り下げ治具側面図である。
【図１６】この発明の実施の形態例の工法に使用する脚材吊り下げ治具のアングル材箇所の内側面図である。
【図１７】この発明の実施の形態例の工法に使用する振れ止めジャッキの正面図である。
【図１８】この発明の実施の形態例の工法に使用する振れ止めジャッキの一部側面図である。
【図１９】塔状構造物の概略を示す説明図である。
【図２０】従来の脚材据付け工法を示す正面説明図である。
【符号の説明】
１地表面２掘削杭
３据付け架台４脚材
７クレーンのフック８脚材吊り下げ治具
１２調整装置１５吊り下げ棒
１６高さ調整ナット１９脚材吊り金具
２１まいまい調整器２２振れ止め
２３振れ止めジャッキ[0001]
BACKGROUND OF THE INVENTION
This invention provides an excavation pit from the ground surface, inserts a leg member bent into a substantially “<” shape of a tower-like structure into the excavation mine, places concrete, and fixes the leg member The present invention relates to a leg installation method and an apparatus thereof, and can be safely installed from the ground at an installation position without an operator entering the excavation mine.
[0002]
[Prior art]
As shown in FIG. 19, a tower-like structure such as a steel tower is composed of an upper structure A on the ground and a foundation structure B buried in the soil. This foundation structure B is excavated from the ground surface, and after that, a leg member which is the lowest node member of the upper structure for connecting the upper structure and the foundation structure is inserted and fixed in the excavation tunnel, and then Then, concrete is poured into the excavation pit and hardened. Further, as shown in this figure, when the upper structure of the tower-like structure is inclined in the central direction, generally, the legs are bent in a substantially “<” shape near the ground.
The legs, which are the lowermost nodes of this tower-like structure, have an accurate inclination angle and center position in the excavation pit of the foundation structure so as not to cause horizontal misalignment of the members and hole displacement between the members when assembling the upper part. Must be installed.
Specifically, as shown in FIG. 20, the inclination angle of the leg is adjusted by adjusting the length of the steel pipe (b) on the ground part supporting the leg (b) bent in the shape of "<" and the excavation mine ( C) The height of the installation adjustment block (e) installed on the floorboard (d) in the inside is adjusted by the operator's voice, and the center position is adjusted inside the excavation pit (c) An operator entered and shifted the bottom of the leg (I) with a bar as appropriate.
[0003]
In addition, as described in, for example, Japanese Patent Application Laid-Open No. 10-317391, an attempt has been made in the industry to construct a tower-like structure without workers entering the excavation mine. However, in this trial, the straight lower legs are first hardened with concrete, and then the upper legs are attached in a bent shape, so to speak, the upper and lower legs are adjusted in the field. However, it does not construct the leg that is bent in the shape of a letter.
[0004]
[Problems to be solved by the invention]
In the former construction method, first, the excavation pit (c) must be dug deep in advance, and concrete must be placed to make a horizontal floor (d) on which the installation adjustment block (e) is placed. For this reason, it takes time and time to harden the concrete. In addition, since the length of the steel pipe (b) and the height of the installation adjustment block (e) are adjusted at different locations, the steel pipe is in accordance with the instructions of the installation block operator. It was difficult for an adjustment worker to adjust the length, which was extremely complicated and laborious. In addition, the worker must enter the bottom of the excavation mine (c), adjust the height of the installation adjustment block (e), or move the bottom of the leg (b) with a bar, Although these operations require a great deal of labor, they cannot be easily installed at a desired position, and have disadvantages such as a long time.
In addition, in this method, if the inner diameter of the excavation mine (c) is reduced, a work space in the excavation mine (c) cannot be secured sufficiently, so that it is difficult or impossible to install the legs. For this reason, it is necessary to excavate the inner diameter by a larger amount corresponding to the work space, and accordingly, the excavation time and the construction time of the tower-like structure become longer, and further the construction cost increases.
In the latter method described in Japanese Patent Application Laid-Open No. 10-317391, it is not necessary for the worker to enter the excavation mine, but if the lower leg is solidified with concrete, the upper leg is attached. Therefore, it is impossible to construct a tower-like structure efficiently in a short time.
In general, tower structures are often installed in places with poor scaffolding such as mountainous areas, so the process of adjusting in the direction of the `` ku '' as much as possible is omitted as much as possible, and factory construction is done in advance. It is preferable to manufacture with.
[0005]
Therefore, the present invention has been made in view of these points, and it is possible to work on the ground without workers entering the excavation mine, and to make the work extremely easy and quick. A leg installation method and an apparatus therefor are provided to solve the above problems.
[0006]
[Means for Solving the Problems]
The invention of claim 1 provides a drilling mine from the ground surface, inserts leg members bent into a substantially “<” shape of the tower structure into the drilling mine, places concrete, In the leg installation method to fix the legs, a platform is provided so as to surround the opening on the ground surface of the excavation mine, and the legs are suspended from this platform, and no workers enter the excavation mine in this state. perform tilt angle adjustment and center alignment of the wood, as well as to fix the orientation and position of the leg members, the tilt angle adjustment of the leg members are in the lower end of the hanger rod suspended from the position adjusting device provided to the frame A leg installation method for a tower structure, in which a suspension jig is provided, the legs are suspended by the suspension jig, and the attachment position of the suspension jig or the suspension rod with respect to the legs is shifted. did. In the invention of claim 2, the center position of the leg member is adjusted by providing a hanging jig at the lower end of the hanging rod suspended from the position adjusting device provided on the gantry. hanging timber, vertical movement of the hanging jig or hanger rod, performs any one or more of rotational movement of the movement or the hanging jig horizontally, wherein one of claims The tower mounting structure was installed.
[0007]
Further, the invention of claim 3 is that an excavation pit is provided from the ground surface, and a leg member bent into a substantially “<” shape of a tower structure is inserted into the excavation mine, and concrete is placed. In the leg installation method for fixing the legs, a pedestal is provided so as to surround the opening on the ground surface of the excavation mine, and the legs are suspended on this pedestal so that no worker enters the excavation mine in this state. Adjusting the inclination angle and center position of the legs, and placing concrete in the excavation mine with the posture and position of the legs supported by a fixed jack inserted from the ground surface, the inclination angle of the legs For adjustment, a hanging jig is provided at the lower end of the hanging rod suspended from the position adjusting device provided on the gantry, and the leg material is suspended by the hanging jig, and the leg of the hanging jig or the hanging rod is used. carried out by shifting the mounting position for the timber,搭状structure It was of leg material installation construction method.
[0008]
Furthermore, the invention according to claim 4 is the method of inserting a leg bent in a substantially “<” shape of a tower-like structure into the excavation mine and suspending the leg in a state where the leg is suspended. After adjusting the degree and the center position, the concrete is placed by a separate concrete placing means and the leg is fixed. It comprises a pedestal that is provided so as to surround the opening on the ground surface, a position adjusting device for the leg material attached to the gantry, a hanging jig, and a fixing device for the leg material, and the position adjusting device is A height adjustment device that supports the suspension jig for the leg material via a suspension rod and adjusts the vertical direction of the suspension jig while the leg material is suspended by the suspension jig. A surface diagonal dimension adjusting device for horizontally moving the hanging jig, and Axial rotation adjuster for horizontally rotating the serial hanging jig is arranged a hanging jig of the leg members is provided with a tilt angle adjuster for adjusting the inclination angle of the leg members, the The fixing device for the leg member has a jack mechanism that widens the outer periphery of the leg member and the inner wall of the excavation shaft at at least two positions in the upper and lower portions of the leg member in the excavation shaft. It was set as the leg installation apparatus of a tower-like structure which is an apparatus which can fix the attitude | position and position of a leg without an operator entering a mine.
[0009]
According to a fifth aspect of the present invention, in the apparatus according to the fourth aspect , the height adjusting device is disposed through the base plate and the upper plate of the suspension jig adjusting device for the leg material. Further, a mechanism for adjusting the length of the suspension bar by rotating the height adjustment nut of the suspension bar is provided. The invention according to claim 6 is the apparatus according to claim 4 or 5, wherein the surface diagonal dimension adjusting device is provided on a plurality of free bearings on a base plate of the position adjusting device. A mechanism for moving and adjusting the four side surfaces of the placed upper plate by rotating a bolt was used. The invention according to claim 7 is the apparatus according to any one of claims 4, 5, or 6, wherein the shaft rotation adjuster protrudes from the suspension bar on the upper plate. The piece was made into the mechanism which rotates the said hanging rod by rotation of a volt | bolt. The invention according to claim 8 is the apparatus according to any one of claims 4, 5, 6 or 7, wherein the inclination angle adjuster is attached to a suspension jig for the leg material. In addition, a mechanism for adjusting the position of the suspension rod by shifting the position of the suspension rod by the rotation of the adjustment bolt is used.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, in order to make it easy to understand the outline of the present invention, the step of hanging with a crane is omitted, and a leg member 4 bent into a “<” shape is installed without an operator entering the excavation pit. The place suspended from the adjusting device 12 of the base 3 into the excavation mine (in FIG. 1, a cylindrical excavation pile 2 described later is inserted into this excavation mine) via the leg suspension jig 8 . It is shown. The leg member 4 is configured to be prevented from shaking by two upper and lower steadying jacks 23 (the other one is omitted because it is the back side of the leg member 4) and the steadying member 22 of the ground surface 1. The steady rest 22 on the ground surface 1 does not adjust the position of the leg member 4 as in the prior art, but is merely a jig that stops the leg member 4 from shaking. With reference to FIG. 1, the outline of the present invention for fixing the legs 4 in the excavation shaft without an operator entering the excavation shaft will be understood. Below, the process until the leg material 4 is suspended and fixed in such a state will be described.
[0011]
First, as shown in FIG. 2, a hole is excavated in the ground surface 1, and a cylindrical excavation pile 2 is inserted into the hole so that an upper opening edge protrudes from the ground surface 1 for a certain length. Then, a saddle-type installation base 3 is installed on the ground surface 1 so as to surround an opening edge protruding from the ground surface 1 of the excavated pile 2 by a certain length . Then, the “-”-shaped leg 4 is suspended from the installation base 3 with a crane, and the lower part of the leg 4 is placed in the excavation pile 2. The suspension of the leg 4 with this crane is achieved by locking the lower end of the sling wire 6 to an eyebolt 5 detachably provided on the flange 4a at the upper end of the leg 4 and hooking the upper end of the sling wire 6 to the crane hook. Hanging on 7 and hanging. FIG. 3 is a view seen from the left side of FIG. 2 in order to make it easy to see the suspended state of the legs 4. As shown in FIG. 3, the leg suspension jig 8 is fixed to the flange portion 4 a in a state in which the flange portion 4 a at the upper end of the leg member 4 is lowered into the installation base 3, and the leg suspension is provided. The jig 8 is engaged with the lower ends of the sling wires 10 whose upper ends are fixed to the hanging metal fittings 9 on both sides of the installation base 3, and the weight of the legs 4 is transferred to the installation base 3 to be temporarily suspended. Therefore, the eyebolt 5 is removed from the flange portion 4a, and the crane hook 7 is made free.
[0012]
Next, as shown in FIG. 4, the upper end of the sling wire 14 whose lower end is locked to the lifting eyenut 13 of the adjusting device 12 having two arms 11 fixed to the lower surface thereof on the free hook 7 of the crane. And the lower end of the hanging rod 15 suspended from the adjusting device 12 is bolted to the upper end of the leg suspension jig 8 as shown in FIG. Then, the height adjusting nut 16 of the adjusting device 12 is rotated to adjust the hanging length of the hanging rod 15, and when the weight of the leg 4 is transferred to the adjusting device 12, the sling wire used for temporary suspension is used. 10 is removed. Then, as shown in FIG. 5, the two arms 11 of the adjusting device 12 are bolted onto the installation base 3.
[0013]
6 to 8 show the same side as FIG. As shown in FIG. 6, the caulking 17 is suspended from the upper end of the leg member 4 into the excavation pile 2, and the folding measure 18 is aligned with the punching mark for measuring the rolls marked in advance on the side surface of the leg member 4. When the rolling (tilt angle) dimension of the leg member is measured and it is out of the allowable range, the leg adjusting bolt 40 of the leg hanging jig 8 is operated, and the leg member with respect to the flange portion 4a of the leg member 4 is operated. The position of the hanging bracket 19 (or the hanging rod 15) is shifted and adjusted by rolling.
[0014]
Further, as shown in FIG. 7, the position of the leg suspension jig 8 with respect to the line of sight at the level or the like is measured by applying a folding scale 18, and the height adjusting nut 16 of the adjusting device 12 is adjusted with a spanner or the like ( In this way, the length of the hanging rod 15 suspended from the adjusting device 12 is changed, and the height of the leg member 4 suspended from the hanging rod 15 is adjusted. Next, the leg 4 in the excavation pile 2 is moved in the horizontal direction and moved to a predetermined position. For this purpose, as shown in FIG. 8, the four face diagonal dimension adjusting bolts 20 of the adjusting device 12 are turned to determine the position. Further, the necessary behavior (shaft rotation) adjustment according to the surface and diagonal dimensions is performed by the behavior ( shaft rotation ) adjuster 21 provided in the adjusting device 12.
[0015]
And in order to maintain the attitude | position of the leg material 4 of this state, as shown in FIG. 1, the steady stop 22 which consists of a steel pipe is applied to the upper end of the leg material 4. As shown in FIG. Then, the steadying jack 23 is inserted between the outer periphery of the leg member 4 and the inner wall of the excavation pile 2. As shown in FIGS. 1 and 9, the anti-rest jack 23 is provided on the outer periphery of the leg 4 and the inner wall of the excavation pile 2 at three locations on the upper and lower parts of the leg 4 inside the excavation pile 2. The width of the steady rest jack 23 is adjusted so as to abut. Thereby, the whole leg material 4 is fixed inside the excavation pile 2. And in this state, concrete is laid between the excavation pile 2 and the leg member 4, the lower part of the leg member 4 is fixed in the ground, and the installation is completed. At that time, in order to avoid burying the lower steadying jack 23 in the concrete, the concrete is placed while being moved upward in accordance with the concrete placement position.
[0016]
Next, the structure of the apparatus or apparatus used in the above method will be described. 10 to 12 show the adjusting device 12. The adjusting device 12 has a base plate 25 of the adjusting device 12 at the center of the two arms 11 arranged in parallel with a gap therebetween as described above. Are fixed on these arms 11 so as to crotch. A large-diameter through hole 26 is provided in the central portion of the base plate 25, and a plurality of free bearings 27 are provided around the through hole 26. A substantially rectangular upper plate 28 provided with 21 and a height adjusting nut 16 is movably mounted.
[0017]
In addition, a vertical plate 29 having a laterally extending through hole and a nut 29a following the through hole is provided in opposition to each other in the vicinity of the outer peripheral edges of the base plate 25. The surface diagonal dimension adjusting bolt 20 is screwed and penetrated through the through hole 29 and the nut 29a. A contact plate 30 is fixed to each edge of the upper plate 28 where the front ends of these surface diagonal dimension adjusting bolts 20 are opposed. Accordingly, if one of the opposing face diagonal dimension adjusting bolts 20 is loosened and the other is tightened, the upper plate 28 is pushed by the bolt 20 in the direction of the face diagonal dimension adjusting bolt 20 loosened. Move on the top. Therefore, the surface dimensions and the diagonal dimensions of the adjusting device 12 itself can be adjusted by loosening or tightening the four face diagonal dimension adjusting bolts 20.
[0018]
The hanging rod 15 protrudes upward through the behavior adjuster 21, the height adjusting nut 16 is screwed to the upper end portion thereof, and the hanging rod 15 protruding downward is It passes through the through hole 26 of the base plate 25, passes between the two arms 11, and hangs down below the adjusting device 12. The suspension bar 15 in the behavior adjuster 21 is movable up and down with respect to the behavior adjuster 21 by providing a key and a key groove, but is prevented from rotating in the horizontal direction. Rotates together. A projecting piece 21a is provided on one side of the outer periphery of the behavior adjuster 21. The vertical plate 31, the nut 31a, and the adjusting bolt having the same structure as the vertical plate 29, the nut 29a, and the face diagonal dimension adjusting bolt 20 are provided. Two pairs of 32 combinations are provided opposite to each other with the protruding piece 21a interposed therebetween. Further, the lifting eye nuts 13 are provided at the four corners of the base plate 25.
[0019]
With these structures, when the height adjustment nut 16 is turned, the projection adjuster 21 is prevented from rotating by the adjusting bolts 32 on both sides of the protrusion 21a, and the suspension bar 15 moves upward or downward. The positions of the leg material hanging jig 8 and the leg material 4 suspended from the hanging rod 15 are also moved up and down, and the height can be adjusted accordingly. Further, if one of the opposing adjustment bolts 32 is loosened and the other is tightened, the projecting piece 21 a is pushed and moves, and the hanging rod 15 rotates together with the behavior adjuster 21.
[0020]
Next, the structure of the leg suspension jig 8 will be described with reference to FIGS. This leg material suspension jig 8 has angle members 33 arranged opposite to each other, and a support plate 34 is passed to these angle members 33 so as to be integrated. Each angle member 33 is bolted to the upper surface of the flange portion 4 a of the leg member 4, and each leg portion 19 a of the leg member hanging bracket 19 passed to the angle member 33 is constant in the longitudinal direction of the angle member 33. The width can be moved freely. This is because a short cylinder 35 is integrally fixed to the outside of the lower end of each leg portion 19a of the leg member 19 and a through hole is formed through the short cylinder 35 and the leg portion 19a. A long hole 36 is provided along the longitudinal direction of the angle member 33, and a bolt 37 is passed through the long hole 36 from the inside of each angle member 33, and is further passed through the through holes of the leg portions 19 a and the short cylinder 35. The nut 38 is screwed at the protruding end.
[0021]
Then, bolt support pieces 39 project from the angle members 33 on both sides of each of the long holes 36, and bolts 40 are screwed and passed through the screw holes of the bolt support pieces 39. By tightening or loosening the bolts 40 screwed to the two bolt support pieces 39, the bolts 40 push the sides of the short cylinders 35 of the leg portions 19a of the leg suspension brackets 19 to suspend the leg members. The metal fitting 19 is movable in the longitudinal direction of each angle member 33. In addition, the lower end of the suspension bar 15 is fixed to the center portion of the leg member 19.
[0022]
FIGS. 17 and 18 show the configuration of the above-described steady-proof jack 23, and an operation shaft 42 extending upward from the upper end of the pantograph-shaped jack body 41 is covered with a pipe 43, and the upper end of the pipe 43 is A jack handle 44 is provided at the upper end of the operation shaft 42 projecting from the operation shaft 42. A hook 45 is provided on one side of the outer periphery of the pipe 43. When the hook 45 is locked to the upper end of the excavation pile 2 and the jack handle 44 is turned, the operation shaft 42 rotates and the jack body 41 opens. Or closed.
[0023]
In the construction method of the above embodiment, a hole is dug from the ground surface 1 to form a drilling mine, and a cylindrical excavation pile 2 is inserted into the excavation mine . It can be used as it is in a pit . Moreover, in the construction method of the above embodiment, the steady jack 23 is used to keep the leg 4 in a desired position and posture. However, the present invention is not limited to this. Other appropriate methods such as packing and fixing between the inner periphery and the outer periphery of the leg material are conceivable.
[0024]
【The invention's effect】
In the inventions of claims 1, 2, 4, 5, 6, 7, and 8 , the installation size adjustment and fixing work of the leg bent in the shape of "<" can be performed on the ground. Thus, there is no need for workers to enter the excavation mine. For this reason, the safety | security at the time of work improves. In addition, since there is no simultaneous work at two places on the ground and in the excavation shaft as in the prior art, and therefore there is no need to make adjustments at the top and bottom of the excavation shaft, the work is easy and a short-time operation is possible. Further, since it is not necessary for the worker to move up and down in the mine, the labor of the worker is reduced. Further, since the leg member is suspended from the installation base and the position and posture thereof are adjusted, the frictional force acting on the leg member is reduced, so that fine adjustment can be easily performed. For this reason, adjustment work can be performed smoothly and work efficiency is good. In addition, since a large amount of labor is not required at the time of adjustment and fixing , the labor burden on the worker is also reduced from this aspect. In addition, since it is not necessary to install a block for installation adjustment in the excavation pit, it is not necessary to dig deep in the excavation pit in advance and place concrete to make a floor board, and it is possible to omit the filling of the underground filling concrete. Moreover, since the inner diameter of the excavation mine can be reduced, the excavation time can be shortened and the amount of concrete filled in the mine can also be reduced. For this reason, construction quality can be improved, work processes can be shortened, and construction work costs can be reduced.
[0025]
The invention of claim 3, wherein, in addition to the effect of the invention of the claim 1 wherein the predetermined orientation of leg members, in order to maintain the state of being fixed at a position, with bracing jack, easily from the ground The leg material can be fixed in the excavation mine, and there is no fear that the leg material will be displaced when the concrete is subsequently placed.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a fixed state after adjusting the posture and position of a leg member in the construction method according to an embodiment of the present invention;
FIG. 2 is an explanatory view showing a first step in the construction method according to the embodiment of the present invention.
FIG. 3 is an explanatory view showing a second step in the construction method according to the embodiment of the present invention.
FIG. 4 is an explanatory diagram showing a third step in the construction method according to the embodiment of the present invention.
FIG. 5 is an explanatory diagram showing a fourth step in the construction method according to the embodiment of the present invention.
FIG. 6 is an explanatory diagram showing a fifth step in the construction method according to the embodiment of the present invention.
FIG. 7 is an explanatory diagram showing a sixth step in the construction method according to the embodiment of the present invention.
FIG. 8 is an explanatory diagram showing a seventh step in the construction method according to the embodiment of the present invention.
FIG. 9 is an explanatory plan view showing a fixed state after adjusting the posture and position of the legs in the construction method according to the embodiment of the present invention.
FIG. 10 is a plan view of an adjusting device used in the construction method according to the embodiment of the present invention.
FIG. 11 is a front view of an adjusting device used in the construction method according to the embodiment of the present invention.
12 is a detailed view of part A of FIG. 11 of the adjusting device used in the construction method according to the embodiment of the present invention.
FIG. 13 is a plan view of a leg suspension jig used in the construction method according to the embodiment of the present invention.
FIG. 14 is a front view of a leg suspension jig used in the construction method according to the embodiment of the present invention.
FIG. 15 is a side view of a leg suspension jig used in the construction method according to the embodiment of the present invention.
FIG. 16 is an inner side view of an angle member portion of a leg suspension jig used in the construction method according to the embodiment of the present invention.
FIG. 17 is a front view of a steady rest jack used in the construction method according to the embodiment of the present invention.
FIG. 18 is a partial side view of a steady rest jack used in the construction method according to the embodiment of the present invention.
FIG. 19 is an explanatory diagram showing an outline of a tower-like structure.
FIG. 20 is a front explanatory view showing a conventional leg installation method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ground surface 2 Excavation pile 3 Installation base 4 Leg material 7 Crane hook 8 Leg material suspension jig 12 Adjuster 15 Suspension rod 16 Height adjustment nut 19 Leg material suspension bracket 21 Dim adjustment 22 Stabilization 23 Stabilization jack

Claims

Legs that provide excavation pits from the ground surface, insert leg members bent into a substantially "<" shape of the tower structure into the excavation pits, place concrete, and fix the leg parts in installation construction method, the platform so as to surround the opening portion of the ground surface of the wellbore is provided, without the worker enters the excavation downhole in this state hung leg members to the frame, the inclination angle adjustment and the center position of the leg members make adjustments, as well as to fix the orientation and position of the leg members, the tilt angle adjustment of the leg members are positioned hanging hanging the hanger lower end of the rod from the adjusting device provided with a jig provided on the frame, the A leg structure installation method for a tower-like structure, characterized by suspending a leg member with a suspension jig and shifting the mounting position of the suspension jig or suspension rod with respect to the leg member.

The center position of the legs is adjusted by providing a hanging jig at the lower end of the hanging rod suspended from the position adjusting device provided on the gantry, and hanging the legs with the hanging jig. or hanging vertical movement of the rod, and carrying out any one or more of rotational movement of the movement or the hanging jig in the horizontal direction,搭状structure according one of claims Leg material installation method.

Legs that provide excavation pits from the ground surface, insert leg members bent into a substantially "<" shape of the tower structure into the excavation pits, place concrete, and fix the leg parts in installation construction method, the platform so as to surround the opening portion of the ground surface of the wellbore is provided, without the worker enters the excavation downhole in this state hung leg members to the frame, the inclination angle adjustment and the center position of the leg members make adjustments, as well as concrete and Da設excavation downhole while supporting a fixed jack inserting the orientation and position of the leg members from the ground surface, the tilt angle adjustment of the leg members, the position adjusting device provided to the frame A suspension jig is provided at the lower end of the suspension rod suspended from the base, the leg material is suspended by the suspension jig, and the attachment position of the suspension jig or the suspension rod to the leg material is shifted. Standing structure for tower structure Only method of construction.

Insert the leg members bent to shape of substantially "V" of搭状structure drilling downhole, the inclination angle of the leg member in a state of hanging leg member, and, after adjusting the central position, another In the leg installation device, in which concrete is placed by a concrete placing means to fix the leg,
The leg installation device includes a pedestal provided so as to surround an opening on the ground surface of the excavation mine, a position adjusting device for the leg attached to the gantry, a hanging jig, and a fixing device for the leg material. Configured,
The position adjustment device supports the suspension jig of the leg material via a suspension rod,
A height adjustment device that adjusts the vertical direction of the suspension jig while the leg material is suspended by the suspension jig, a surface diagonal dimension adjustment device that horizontally moves the suspension jig, and the suspension A shaft rotation adjuster that rotates the lowering jig horizontally is arranged.
Hanging jig of the leg members is provided with a tilt angle adjuster for adjusting the inclination angle of the leg members,
The fixing device for the leg member has a jack mechanism that widens the outer periphery of the leg member and the inner wall of the excavation shaft at at least two locations in the upper and lower portions of the leg member in the excavation shaft. A leg structure installation device for a tower structure, characterized in that the posture and position of the leg material can be fixed without an operator entering the excavation mine.

The height adjustment device is configured to rotate the height adjustment nut of the suspension rod arranged through the base plate and the upper plate of the suspension jig adjustment device for the leg material, thereby rotating the suspension rod. 5. The leg installation device for a tower structure according to claim 4 , wherein the device is a mechanism for adjusting the length.

The surface diagonal dimension adjusting device is a mechanism for moving and adjusting four side surfaces of an upper plate placed on a plurality of free bearings on a base plate of the position adjusting device by rotating a bolt. The leg installation apparatus of the tower-like structure in any one of Claim 4 or 5 .

The shaft rotation regulator on the upper plate, by rotating the protrusion bolt from the hanger rod, characterized in that it is a mechanism for rotating the hanger rod, the claim 4, wherein, 5 Item 7. A leg structure installation device for a tower structure according to any one of item 6 or item 6 .

The inclination angle regulator is characterized by a mechanism for adjusting by position of the rod suspended above attached hanging jig of the leg members are shifted by the rotation of the adjustment bolt, the claim 4, wherein The leg structure installation device for a tower structure according to any one of items 5, 6, or 7 .