JP3728016B2 - Flexible rebar erection device and erection method - Google Patents

Flexible rebar erection device and erection method Download PDF

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JP3728016B2
JP3728016B2 JP15728596A JP15728596A JP3728016B2 JP 3728016 B2 JP3728016 B2 JP 3728016B2 JP 15728596 A JP15728596 A JP 15728596A JP 15728596 A JP15728596 A JP 15728596A JP 3728016 B2 JP3728016 B2 JP 3728016B2
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reinforcing bar
main
flexible
flexible reinforcing
bar
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JPH101942A (en
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寛 平岡
政男 荒井
元茂 有山
裕子 喜田
章 西村
進 徳永
信行 浦川
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Taisei Corp
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Taisei Corp
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Description

【0001】
【発明の属する技術分野】
この発明は、地下連続壁の構築過程における鉄筋の建込み技術に関し、特に空頭高さが制限される路下連続壁の構築過程における鉄筋の建込みに好適な装置と建込み方法に関するものである。
【0002】
【従来の技術】
ベントナイト等の安定液を使用して掘削壁面の崩壊を防止しながら地下に壁状の溝孔を掘削し、掘削完了後の安定液中に所要の鉄筋を建込み、コンクリートを安定液と置換しながら打設して鉄筋コンクリートの壁体を地中に構築していく地下連続壁工法は、最近の施工技術の進展に伴い、多用の一途を辿っている。
【0003】
この構築された壁体である地下連続壁は、止水性に優れ、大きい剛性と強度を有するため、仮設山留材・止水壁等に使用されてきたが、最近では地下構造物や橋梁基礎等の永久構造物の構造体としても広く用いられている。このような連続壁の構築過程における鉄筋の建込み方法は、予め製作した鉄筋篭を連続壁溝内に順次吊り下ろし、ジョイントしながら建込んでいるのが従来の方式である。
【0004】
【発明が解決しようとする課題】
ところで、空頭高さのない路下で施工する路下連続壁の構築に、前記した従来の鉄筋篭方式を用いた場合、次のような問題点があった。
▲1▼ 従来の鉄筋篭方式では、大きな空頭高さが必要不可欠であり、路下連続壁では必要な空頭が確保できないために連続壁工法が採用できない場合があった。
▲2▼ 空頭高さが制限される路下連続壁の構築(鉄筋の建込み工事)では、必然的に鉄筋篭の分割数が増加するため、鉄筋篭の継手数が増加して材料費・施工費のコストアップにつながるとともに、作業効率の低下と建込み障害を起こす原因ともなる場合が多かった。
▲3▼ 従来の鉄筋篭方式では、建込み作業に大きな空頭高さが必要なため、その分作業床が低くなり、地下水位を大きく低下させる必要がある。そのため、周辺環境に地下水位の低下による悪影響を及ぼしていた。
▲4▼ 従来の鉄筋篭方式では、鉄筋篭の製作と仮置きに広いスペースが必要であり、都市部等では用地の確保が困難となる場合が多かった。
【0005】
こうした前記問題点を解決する方法として、フレキシブル鉄筋(鉄筋の一種類で可撓性があり、伸直性のある鉄筋を言う)による連続壁の構築方法が開発されているが、その工法においても次のような問題点があった。
(A)フレキシブル鉄筋を束ね、主筋として使用する場合には、予め所要本数に結束加工を行ったフレキシブル鉄筋を用意し、建込み装置にセットしなければならなかった。そのため、結束加工に多大な労力を必要とし、加工場として広い作業スペースが必要不可欠であった。
(B)前記主筋の幅およびピッチを保持するためのフレームを、連続壁の深度方向の全長に渡り取り付けていた。そのため、多くの材料が必要であり、フレームの分割数が増加するため、搬入・取り付け・ジョイント等にも多くの労力と費用を要していた。
(C)横鉄筋においては、予め表裏一双で組み立てた鉄筋篭の上端にフックを取り付け、主筋の建込みに応じて、主筋に予め水平に取り付けておいた金物に鉄筋篭を吊り下げていたため、数本から数十本の主筋を同一長さで前記金物に取り付ける際、長さ調整に多くの時間を必要とした。
(D)前記金物を予め主筋に取り付けていたため、建込み方法が制限され、作業効率の低下を招いていた。
(E)鉄筋の建込みが終了した後、鉄筋上端の固定は、フレームの上部に鋼材等で製作したカンザシを通してガイドウォールで受けていた。そのため、フレームは鉄筋篭の全長に渡って取り付ける必要があり、フレームには鉄筋とフレームの重量に耐えうるだけの強度が要求されるため、必然的にフレーム重量が大となり、多くの材料と製作費を要し、搬入・取り付けの際の作業性が悪かった。
【0006】
そこでこの発明は、前記した従来の建込み方法である鉄筋篭方式の問題点を解決することは勿論、前記フレキシブル鉄筋の建込み方法における問題点をも解決するフレキシブル鉄筋を用いた連続建込み装置と建込み方法を提供することを目的とし、開発したものである。
【0007】
【課題を解決するための手段】
上記目的を達成するため、この発明では、まずフレキシブル鉄筋の建込み装置を次のように構成した。
まず、フレーム体を構成し、このフレーム体に複数本のフレキシブル鉄筋の受入・送出を行う鉄筋供給手段を設けた。さらに、前記フレーム体に、前記鉄筋供給手段により送出されるフレキシブル鉄筋を中継するとともに、所要本数のフレキシブル鉄筋を一定の結束形状にセットアップしながら建込み目標位置へ誘導する鉄筋誘導手段を設け、フレキシブル鉄筋の建込み装置を構成したものである。
【0008】
また、前記鉄筋供給手段は、駆動手段を備えたドラムで構成した。
【0009】
また、前記駆動手段は、モータ機構により構成した。
【0010】
また、前記鉄筋誘導手段は、ガイドローラ機構により構成した。
【0011】
次に、前記した構成の建込み装置を用い、次のような工程からなる建込み方法でフレキシブル鉄筋の建込みを行うようにした。
(1)地下連続壁構築用溝の上端部に、梁材からなる鉄筋養生ベースを設置する工程。
(2)前記鉄筋養生ベースを建込み目標として、前記した建込み装置を前記地下連続壁構築用溝の上部に設置する工程。
(3)フレキシブル鉄筋を鉄筋供給手段より送出していき、所要本数のフレキシブル鉄筋を鉄筋誘導手段を中継して一定の結束状態にした後、所定のピッチで結束し主筋としていく工程。
(4)前記主筋を前記鉄筋養生ベース上まで引き出し、予め製作した下部フレーム(建込み完了時に底部フレームとなる)を主筋の内側に挿入し、吊り下げて取り付ける工程。
(5)前記主筋を順次建込みながら、予め組み立てた横鉄筋パネルを主筋に取り付け、前記下部フレームを前記地下連続壁構築用溝に所定深さ(間隔)分降ろす工程。
(6)前記鉄筋養生ベース上の主筋の内側に、予め製作した中間フレーム(建込み完了時に中間部フレームとなる)を挿入し、取り付ける工程。
(7)前記主筋を順次建込みながら、予め組み立てた横鉄筋パネルを主筋に取り付け、前記中間フレームを前記地下連続壁構築用溝に所定深さ(間隔)分降ろす工程。
(8)前記鉄筋養生ベース上の主筋の内側に、予め製作した上部フレーム(建込み完了時に上部フレームとなる)を挿入し、取り付ける工程。
(9)前記主筋を順次建込みながら、前記上部フレームを前記地下連続壁構築用溝に所定深さ(間隔)分降ろすとともに、前記鉄筋養生ベース上の主筋頭部に楔部材を取り付ける工程。
(10)前記主筋頭部を、前記鉄筋養生ベースに前記楔部材を用いて固定し、固定部の上部で主筋を切断する工程。
(11)前記鉄筋養生ベースの下部までコンクリートを打設し、地下連続壁を構築した後、鉄筋養生ベースを撤去する工程。
【0012】
【発明の実施の形態】
次に添付図面に基づき、この発明による具体例を説明する。
図1は、この発明によるフレキシブル鉄筋の建込み装置を示す概略構成図、図2は、この発明によるフレキシブル鉄筋の建込み装置の一例を示す正面図、図3は、図2における平面図、図4は、鉄筋誘導手段としてのガイドローラ機構を示す構造説明図であり、(A)は上方からの構造説明図、(B)は側方からの構造説明図である。
まず、図1により、この発明によるフレキシブル鉄筋の建込み装置の概略構成を説明する。
アングル材等の鋼材からフレーム体10を構成し、このフレーム体10上に、駆動手段を備えたドラム11を設けるとともに、連続壁構築用溝H上にはガイドローラ12を所要数設け、フレキシブル鉄筋の建込み装置Xを構成した。この場合前記ドラムは、複数本のフレキシブル鉄筋の受入と送出を行う役目を担い、前記ガイドローラ12は、前記ドラムから送出されるフレキシブル鉄筋を中継し、所要本数のフレキシブル鉄筋を一定の結束形状(結束状態)にしながら建込み目標位置である前記連続壁構築用溝Hへ誘導する役目を担う。また、前記連続壁構築用溝Hの周りには、予めレールRを敷設しておき、前記フレキシブル鉄筋の建込み装置の底部に車輪13を設けることにより、移動可能としたものである。なお29は、梁材からなる鉄筋養生ベースを示す。
【0013】
次に、図2,図3により、この発明によるフレキシブル鉄筋の建込み装置の詳細を説明する。
ドラム11は、ギヤ減速機付きの油圧モータ15により、ローラーチェーン16を介し回転自在に駆動できるようにし、主筋(フレキシブル鉄筋)Sの巻き取り(受入れ)と引き出し(送出)が自由にできるようにした。また、ガイドローラ14,12は、ドラム11から引き出された主筋(フレキシブル鉄筋)Sの中継と連続壁構築用溝Hへの誘導を行う。この場合、ドラム11から引き出された複数本の主筋(フレキシブル鉄筋)Sは、結束に必要な本数(この場合は3本)の主筋(フレキシブル鉄筋)Sを1個のガイドローラ14,12に通し、他のそれぞれの主筋(フレキシブル鉄筋)Sもそれぞれ個々のガイドローラ14,12に通す。ガイドローラ12には、種々のローラを配設してあるので、主筋(フレキシブル鉄筋)Sは、ガイドローラ12を通過する間に一定の結束形状(結束状態)にセットされることになる。こうしてガイドローラ12を通過後、鉄線または鋼製のバンド等を用いて所定のピッチで結束していくのである。なお、この例のガイドローラ14は、同一のローラを配設し構成したものであり、主筋(フレキシブル鉄筋)Sの中継のみを行うようにした。
【0014】
次に、図4により、この発明によるガイドローラ機構を説明する。
図の(A)および(B)に示すように、このガイドローラ12は、四分の一の円弧状からなる2つのローラ取付部材Pの間に、種々のローラ23,24,25,26,27,28を順に配設し組み込んで構成したものである。この例の場合には、図の左方向から平行した3本の主筋(フレキシブル鉄筋)Sが送られる。そして、ガイドローラ12の前記ローラを通過するうち、図示したような結束形状(結束状態)にセットアップされるようにした。つまり、形状の変化するローラを順に配列させ、組み合わせることにより、通過する主筋(フレキシブル鉄筋)Sの配置状態を変えるわけである。なお、図の(A)では、理解しやすくするために(B)における上方のローラ23の図示は省略した。
【0015】
次に、前記した構成のフレキシブル鉄筋の建込み装置Xを使用したフレキシブル鉄筋の建込み方法を図1,図5〜図16により、手順を追って説明する。
(1)図5に示すように、連続壁構築用溝Hの周りに、予めフレキシブル鉄筋の建込み装置Xの移動用レールRを敷設し、前記連続壁構築用溝Hの上端部には、梁材からなる鉄筋養生ベース29を設置する。
(2)次に、図1に示すように、前記鉄筋養生ベース29を建込み目標として、前記フレキシブル鉄筋の建込み装置Xを、前記連続壁構築用溝Hの上部に設置する。
(3)次に、図6に示すように、ドラム11から主筋(フレキシブル鉄筋)Sを送出していき、ガイドローラ12を中継して所要本数の主筋(フレキシブル鉄筋)Sを一定の結束形状(結束状態)にセットアップした後、鉄線または鋼製のバンド等を使用し、所定のピッチで結束していく。
(4)次に、図7に示すように、前記主筋(フレキシブル鉄筋)Sを前記鉄筋養生ベース29上まで引き出し、予め製作しておいた下部フレーム(建込み完了時に底部フレームとなる)F1を前記主筋(フレキシブル鉄筋)Sの内側に挿入し、吊り下げて取り付ける。
(5)次に、図9に示すように、前記主筋(フレキシブル鉄筋)Sを順次建込みながら、予め表裏別々に組み立てた横鉄筋パネルYを前記主筋(フレキシブル鉄筋)Sに取り付けていき、前記下部フレームF1を前記連続壁構築用溝Hに所定深さ分降ろす。
(6)次に、図11に示すように、前記鉄筋養生ベース29上における前記主筋(フレキシブル鉄筋)Sの内側に、予め製作しておいた中間フレーム(建込み完了時に中間部フレームとなる)F2を挿入し、取り付ける。
(7)次に、図9に示す前記(5)の場合と同様に、前記主筋(フレキシブル鉄筋)Sを順次建込みながら、予め表裏別々に組み立てた横鉄筋パネルYを前記主筋(フレキシブル鉄筋)Sに取り付けていき、前記中間フレームF2を前記連続壁構築用溝Hに所定深さ分降ろす。
(8)次に、図12に示すように、前記鉄筋養生ベース29上における前記主筋(フレキシブル鉄筋)Sの内側に、予め製作しておいた上部フレーム(建込み完了時に上部フレームとなる)F3を挿入し、取り付ける。
(9)次に、図13に示すように、前記主筋(フレキシブル鉄筋)Sを順次建込みながら、前記上部フレームF3を前記連続壁構築用溝Hに所定深さ分降ろすとともに、前記鉄筋養生ベース29上の主筋(フレキシブル鉄筋)Sの頭部に楔部材38を取り付ける。
(10)次に、図14に示すように、前記主筋(フレキシブル鉄筋)Sの頭部を前記鉄筋養生ベース29に前記楔部材38により固定して上部の主筋(フレキシブル鉄筋)Sを切断する。なお、図16に示すものは、フレキシブル鉄筋による建込み完了図である。
(11)最後に、前記鉄筋養生ベース29の下部までコンクリートを打設し、連続壁を構築した後、鉄筋養生ベース29を撤去する。
【0016】
次に、前述した主筋(フレキシブル鉄筋)Sと前記下部フレームF1,中間フレームF2,上部フレームF3との取付方法を図8により説明する。
前記した各フレームは、図8の(A),(B)に示すように、前記連続壁構築用溝Hに建込んだ主筋(フレキシブル鉄筋)Sのピッチ・間隔等を保持するため、鋼製のアングル等を箱状に構成してフレームF(建込み用)としたものである。このフレーム(建込み用)Fには、予め所定数のボルト33を所定位置に取り付けてあり、フレーム(建込み用)Fと前記主筋(フレキシブル鉄筋)Sとの取り付けにおいては、ボルト33と33の間に主筋(フレキシブル鉄筋)Sを挿入し、取付けプレート32で押さえ、ナット34で固定することにより行う。
【0017】
次に、前述した建込み方法における横鉄筋パネルYの取付方法を図10により説明する。<前記手順(5),(7)の横鉄筋パネルの取付方法を示す。>
図10の(A)は横鉄筋パネルYの外観を示すものである。図示のように、組立鉄筋35と横鉄筋36により格子状のパネルを構成した。また(B),(C),(D)は、前記横鉄筋パネルYの取付状態を示しており、図示におけるΩ型の取付金具37に主筋(フレキシブル鉄筋)Sを通していきながら(B)のように取り付けていく。
【0018】
次に、前述した手順(9),(10)における鉄筋養生ベース29と楔部材38との取付けについて、図5,図15により説明する。
図5あるいは図15の(A)に示すように、鉄筋養生ベース29の所定位置には、楔部材38の固定部31を予め設けておく。この固定部31に、図15の(B)に示す主筋(フレキシブル鉄筋)Sを通したすり割り入りの楔部材38を挿入し、固定するわけである。なお、その固定後、前記楔部材38の上部における主筋(フレキシブル鉄筋)Sを切断することとなる。
【0019】
【発明の効果】
この発明は、以上説明したように構成されているので、次のような効果を奏する。
(1)この発明により、低空頭であっても連続壁の構築工事が可能となる。また、作業空間の確保のための掘削土量が減り、経済性も向上する。
(2)この発明により、ジョイントなしで連続して鉄筋の建込みが可能となり、経済性が大幅に向上するとともに、鉄筋建込みの能率アップにより工程短縮が図られる。また、主筋にジョイントがなく、地震等にジョイント部が弱点となることもなく、構造的に安定した信頼性の高い連続壁の構築が可能となる。
(3)この発明においては、作業に必要な空頭高さが小さいため、その分、作業床が高く、地下水位の低下量が小さくなる。そのため、地下水位の低下による周辺環境への影響が少なくなる。
(4)この発明では、フレキシブル鉄筋の製作を工場において行うので、鉄筋篭の製作用地は現場に必要としない。その上、仮置場も小面積でよい。従って、用地の確保が困難な都市部の路下における連続壁の構築範囲が広くなる。
(5)この発明により、従来の鉄筋建込み装置では不可能であったフレキシブル鉄筋の必要本数に応じた結束作業が機械的に可能となった。そのため、省力化とコストダウンが可能となり、予め結束作業を行うための広い作業スペースも不必要となった。
(6)従来のフレキシブル鉄筋の建込みでは、主筋の幅およびピッチを保持するためのフレームを連続して取り付けていたが、この発明により、フレームを断続的に取り付けるだけでフレーム機能が発揮できることとなった。そのため、製作・搬入・取付・ジョイント等の材料費と人件費のコストダウンが可能となる。
(7)従来のフレキシブル鉄筋の建込みでは、予め組み立てた鉄筋篭を吊り下げるための金物を、予め主筋に取り付ける必要があった。しかし、この発明により、予め表裏別々に組み立てた軽量の横鉄筋パネルを鉄筋の建込みに応じて簡易な固定金具で取り付けることが可能となり、予め金物を主筋に取り付ける必要がなくなるとともに、その金物が鉄筋の建込みの際の障害とならない。従って、鉄筋の建込みと横鉄筋の取り付けの施工性が向上し、コストダウンが可能となる。
(8)従来のフレキシブル鉄筋の建込みでは、フレームにカンザシを通して鉄筋篭をガイドウォールで受けていた。そのため、連続壁の深度方向全長に渡り強固なフレームが必要であった。しかし、この発明では、楔部材を使用して主筋の天端を養生ベースに固定するため、従来のような強固で連続したフレームは不必要となり、主筋の幅およびピッチを保持するために断続的にフレームを取り付けるだけでよいこととなる。従って、材料費・人件費が減少するとともに、作業効率もアップする。
【図面の簡単な説明】
【図1】この発明によるフレキシブル鉄筋の建込み装置を示す概略構成図である。
【図2】この発明によるフレキシブル鉄筋の建込み装置の一例を示す正面図である。
【図3】図2における平面図である。
【図4】鉄筋誘導手段としてのガイドローラ機構を示す構造説明図であり、(A)は上方からの構造説明図、(B)は側方からの構造説明図である。
【図5】連続壁構築用溝の上端部に、鉄筋養生ベースを設置する状況を示す説明図である。
【図6】ドラムから主筋を送出し、ガイドローラを中継させて結束する状況を示す説明図である。
【図7】予め製作しておいた下部フレームを、主筋に吊り下げて取り付けている状況を示す説明図である。
【図8】主筋とフレームとの取付方法を示す説明図であり、(A)は取付状況を示し、(B)は取付部の詳細である。
【図9】主筋を順次建込み、予め組み立てた横鉄筋パネルを前記主筋に取り付け、下部フレームを連続壁構築用溝に降ろしている状況を示す説明図である。
【図10】この発明による建込み方法における横鉄筋パネルの取付方法を示す説明図であり、(A)は横鉄筋パネルの外観を示し、(B)は横鉄筋パネルの取付状況を示し、(C),(D)は横鉄筋パネルの取付金具を示す。
【図11】予め製作しておいた中間フレームを、主筋に取り付けている状況を示す説明図である。
【図12】予め製作しておいた上部フレームを、主筋に取り付けている状況を示す説明図である。
【図13】主筋を順次建込み、上部フレームを連続壁構築用溝に降ろし、主筋頭部に楔部材を取り付けている状況を示す説明図である。
【図14】主筋頭部を鉄筋養生ベースに楔部材により固定し、上部の主筋を切断した状況を示す説明図である。
【図15】鉄筋養生ベースと楔部材との取付状況を示す説明図であり、(A)は鉄筋養生ベースにおける楔部材の固定部を示し、(B)は楔部材の概要を示す。
【図16】この発明のフレキシブル鉄筋による建込み完了図である。
【符号の説明】
10・・・・フレーム体
11・・・・ドラム
12・・・・ガイドローラ
13・・・・車輪
14・・・・ガイドローラ
15・・・・油圧モータ
16・・・・ローラーチェーン
17・・・・電磁弁収納ボックス
18・・・・スイベル
19・・・・スリップリング
20・・・・ブレーキシリンダ
21・・・・ギヤリング
22・・・・ピン(シャフト)
23・・・・ローラ
24・・・・ローラ
25・・・・ローラ
26・・・・ローラ
27・・・・ローラ
28・・・・ローラ
29・・・・鉄筋養生ベース
30・・・・足場板
31・・・・固定部
32・・・・取付けプレート
33・・・・ボルト
34・・・・ナット
35・・・・組立鉄筋
36・・・・横鉄筋
37・・・・取付金具
38・・・・楔部材
F・・・・フレーム(建込み用)
F1・・・下部フレーム
F2・・・中間フレーム
F3・・・上部フレーム
H・・・・連続壁構築用溝
P・・・・ローラ取付部材
R・・・・レール
S・・・・主筋(フレキシブル鉄筋)
Y・・・・横鉄筋パネル
W・・・・鉄筋篭体
[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a reinforcing bar construction technique in the process of building an underground continuous wall, and more particularly to an apparatus and a building method suitable for building a reinforcing bar in a building process of a continuous road wall where the head height is limited. .
[0002]
[Prior art]
Using a stabilizing liquid such as bentonite, drilling a wall-like groove hole underground while preventing the collapse of the excavated wall surface, building the required reinforcing bars in the stabilizing liquid after excavation, and replacing the concrete with the stabilizing liquid However, the underground continuous wall construction method, in which a reinforced concrete wall is built in the ground, has been increasingly used with the recent progress of construction technology.
[0003]
The constructed underground continuous wall, which has excellent water-stopping properties and has high rigidity and strength, has been used for temporary mountain retaining materials and water-stopping walls. Recently, however, underground structures and bridge foundations have been used. It is also widely used as a structure of permanent structures such as. The conventional method of building reinforcing bars in the process of constructing such a continuous wall is to suspend steel bars made in advance in a continuous wall groove and build them while jointing.
[0004]
[Problems to be solved by the invention]
By the way, when the above-mentioned conventional reinforcing bar method is used for construction of a continuous road wall to be constructed under a road having no empty head height, there are the following problems.
(1) In the conventional reinforcing bar method, a large empty head height is indispensable, and the continuous wall method may not be adopted because the required empty head cannot be secured in the continuous wall under the road.
(2) In the construction of a continuous wall under the road where the empty head height is limited (reinforcing bar construction), the number of reinforcing bar rods will inevitably increase, so the number of reinforcing bar rod joints will increase and material costs and In addition to increasing the construction cost, there were many cases that caused a decrease in work efficiency and a failure to build.
{Circle around (3)} In the conventional steel bar method, since a large overhead height is required for the construction work, the work floor is lowered correspondingly, and the groundwater level needs to be greatly reduced. As a result, the surrounding environment was adversely affected by a drop in groundwater level.
(4) In the conventional reinforcing bar method, a large space is required for manufacturing and temporarily placing the reinforcing bar, and it is often difficult to secure a site in urban areas.
[0005]
As a method for solving these problems, a method of constructing a continuous wall using flexible reinforcing bars (which is a kind of reinforcing bars, which is flexible and stretchable) has been developed. There were the following problems.
(A) When bundling flexible rebars and using them as main bars, flexible rebars that had been previously bundled into the required number had to be prepared and set in the erection device. Therefore, a great deal of labor is required for bundling, and a large work space is indispensable as a processing place.
(B) A frame for maintaining the width and pitch of the main bars was attached over the entire length in the depth direction of the continuous wall. Therefore, since many materials are required and the number of divisions of the frame increases, much labor and cost are required for carrying in, attaching, joints, and the like.
(C) In horizontal reinforcing bars, hooks were attached to the upper ends of the reinforcing bar cages assembled in front and back in advance, and the reinforcing bar rods were suspended from hardware that had been attached to the main bars in advance according to the construction of the main reinforcing bars. When several to several tens of main bars are attached to the hardware with the same length, it takes a lot of time to adjust the length.
(D) Since the hardware was previously attached to the main bar, the construction method was limited, resulting in a decrease in work efficiency.
(E) After the reinforcement was completed, the upper end of the reinforcement was fixed by the guide wall through a kanzashi made of steel or the like on the upper part of the frame. Therefore, it is necessary to attach the frame over the entire length of the rebar rod, and the frame is required to be strong enough to withstand the weight of the rebar and the frame. Expenses were required, and workability during loading and installation was poor.
[0006]
Therefore, the present invention solves the problems of the conventional reinforcing bar method that is the conventional erection method, as well as the continuous erection apparatus using the flexible reinforcing bar that also solves the problems in the erection method of the flexible reinforcing bar. It was developed for the purpose of providing an installation method.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, a flexible reinforcing bar erection device is configured as follows.
First, a frame body was configured, and a reinforcing bar supply means for receiving and sending a plurality of flexible reinforcing bars was provided on the frame body. Furthermore, the frame body is provided with a reinforcing bar guiding means for relaying the flexible reinforcing bars sent out by the reinforcing bar supply means and guiding the required number of flexible reinforcing bars to a target position while setting them up in a fixed bundling shape. This constitutes a reinforcing bar erection device.
[0008]
Further, the reinforcing bar supplying means is constituted by a drum provided with driving means.
[0009]
The driving means is constituted by a motor mechanism.
[0010]
The reinforcing bar guiding means is constituted by a guide roller mechanism.
[0011]
Next, using the erection device having the above-described configuration, the flexible rebar is erected by the erection method including the following steps.
(1) A step of installing a reinforcing bar curing base made of a beam material at the upper end of the underground continuous wall construction groove.
(2) A step of installing the above-described erection device on the upper part of the groove for constructing the underground continuous wall, with the reinforcing bar curing base as a erection target.
(3) A step in which flexible reinforcing bars are delivered from the reinforcing bar supply means, and the required number of flexible reinforcing bars are relayed through the reinforcing bar guiding means to be in a certain binding state, and then are bundled at a predetermined pitch to become the main reinforcing bars.
(4) A step of pulling out the main bar to the reinforcing bar curing base, inserting a pre-manufactured lower frame (becomes a bottom frame when the erection is completed) into the main bar, and suspending it.
(5) A step of attaching a pre-assembled horizontal reinforcing bar panel to the main bar while sequentially building the main bar, and lowering the lower frame to the groove for constructing the underground continuous wall by a predetermined depth (interval).
(6) Inserting and attaching a pre-manufactured intermediate frame (which becomes an intermediate frame when construction is completed) inside the main bar on the reinforcing bar curing base.
(7) A step of attaching a pre-assembled horizontal reinforcing bar panel to the main bar while sequentially building the main bar, and lowering the intermediate frame to the groove for constructing the underground continuous wall by a predetermined depth (interval).
(8) A step of inserting and attaching a prefabricated upper frame (which becomes the upper frame when the building is completed) inside the main bar on the reinforcing bar curing base.
(9) A step of lowering the upper frame to the underground continuous wall construction groove by a predetermined depth (interval) while sequentially mounting the main bars, and attaching a wedge member to the main bar head on the reinforcing bar curing base.
(10) A step of fixing the head of the main muscle to the reinforcing bar curing base using the wedge member and cutting the main muscle at an upper portion of the fixing portion.
(11) A step of removing the reinforcing bar curing base after placing concrete to the lower part of the reinforcing bar curing base to construct an underground continuous wall.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, specific examples according to the present invention will be described with reference to the accompanying drawings.
1 is a schematic configuration diagram showing a flexible reinforcing bar erection device according to the present invention, FIG. 2 is a front view showing an example of a flexible reinforcing bar erection device according to the present invention, and FIG. 3 is a plan view of FIG. 4 is a structural explanatory view showing a guide roller mechanism as a reinforcing bar guiding means, (A) is a structural explanatory view from above, and (B) is a structural explanatory view from the side.
First, referring to FIG. 1, a schematic configuration of a flexible reinforcing bar erection device according to the present invention will be described.
A frame body 10 is made of a steel material such as an angle member, and a drum 11 having a driving means is provided on the frame body 10 and a required number of guide rollers 12 are provided on the groove H for continuous wall construction. The construction device X was constructed. In this case, the drum plays a role of receiving and sending out a plurality of flexible reinforcing bars, and the guide roller 12 relays the flexible reinforcing bars sent out from the drum, and a predetermined number of flexible reinforcing bars are bound to a fixed shape ( It plays a role of guiding to the continuous wall construction groove H, which is the target position for erection. Further, a rail R is laid in advance around the continuous wall construction groove H, and a wheel 13 is provided at the bottom of the flexible rebar erection device so as to be movable. Reference numeral 29 denotes a reinforcing bar curing base made of a beam material.
[0013]
Next, with reference to FIG. 2 and FIG. 3, the details of the flexible reinforcing bar erection device according to the present invention will be described.
The drum 11 can be driven to rotate via a roller chain 16 by a hydraulic motor 15 with a gear reducer so that the main bar (flexible rebar) S can be taken up (accepted) and pulled out (sent out) freely. did. The guide rollers 14 and 12 relay the main reinforcing bar (flexible reinforcing bar) S drawn from the drum 11 and guide it to the continuous wall construction groove H. In this case, the plurality of main reinforcing bars (flexible reinforcing bars) S pulled out from the drum 11 pass the number of main reinforcing bars (flexible reinforcing bars) S required for bundling (in this case, three) through one guide roller 14, 12. The other main reinforcing bars (flexible reinforcing bars) S are also passed through the individual guide rollers 14 and 12, respectively. Since the guide roller 12 is provided with various rollers, the main reinforcing bar (flexible reinforcing bar) S is set in a fixed binding shape (bundled state) while passing through the guide roller 12. In this way, after passing through the guide roller 12, it is bundled at a predetermined pitch using an iron wire or a steel band. The guide roller 14 in this example is configured by arranging the same rollers, and only the main bar (flexible reinforcing bar) S is relayed.
[0014]
Next, the guide roller mechanism according to the present invention will be described with reference to FIG.
As shown in FIGS. 4A and 4B, the guide roller 12 includes various rollers 23, 24, 25, 26, between two roller mounting members P each having an arc shape of a quarter. 27 and 28 are arranged and assembled in order. In the case of this example, three main reinforcing bars (flexible reinforcing bars) S are sent in parallel from the left direction in the figure. And while passing the said roller of the guide roller 12, it set up to the bundling shape (bundling state) as shown in figure. That is, the arrangement state of the passing main reinforcing bars (flexible reinforcing bars) S is changed by sequentially arranging and combining rollers whose shapes change. In FIG. 2A, the upper roller 23 in FIG. 2B is omitted for easy understanding.
[0015]
Next, a flexible rebar erection method using the flexible rebar erection device X having the above-described configuration will be described step by step with reference to FIGS.
(1) As shown in FIG. 5, a rail for moving the flexible reinforcing bar laying device X is laid in advance around the continuous wall construction groove H, and the upper end of the continuous wall construction groove H is A reinforcing bar base 29 made of beams is installed.
(2) Next, as shown in FIG. 1, with the reinforcing bar curing base 29 as a building target, the flexible reinforcing bar erection device X is installed above the continuous wall construction groove H.
(3) Next, as shown in FIG. 6, the main reinforcing bar (flexible reinforcing bar) S is sent out from the drum 11, and the guide roller 12 is relayed to form the required number of main reinforcing bars (flexible reinforcing bar) S in a certain bundling shape ( After being set up in a binding state), a steel wire or a steel band is used to bind at a predetermined pitch.
(4) Next, as shown in FIG. 7, the main reinforcing bar (flexible reinforcing bar) S is pulled out onto the reinforcing bar curing base 29, and a prefabricated lower frame (becomes a bottom frame upon completion of the construction) F1 It is inserted inside the main reinforcing bar (flexible reinforcing bar) S, and is hung and attached.
(5) Next, as shown in FIG. 9, while building the main reinforcing bars (flexible reinforcing bars) S in order, the horizontal reinforcing bar panel Y assembled separately in front and back is attached to the main reinforcing bars (flexible reinforcing bars) S, The lower frame F1 is lowered to the continuous wall construction groove H by a predetermined depth.
(6) Next, as shown in FIG. 11, an intermediate frame manufactured in advance inside the main reinforcing bar (flexible reinforcing bar) S on the reinforcing bar curing base 29 (becomes an intermediate frame when the building is completed). Insert and install F2.
(7) Next, as in the case of (5) shown in FIG. 9, the horizontal reinforcing bar panel Y assembled separately in advance while the main reinforcing bar (flexible reinforcing bar) S is sequentially built, the main reinforcing bar (flexible reinforcing bar) At S, the intermediate frame F2 is lowered into the continuous wall construction groove H by a predetermined depth.
(8) Next, as shown in FIG. 12, on the inside of the main reinforcing bar (flexible reinforcing bar) S on the reinforcing bar curing base 29, an upper frame (which becomes an upper frame upon completion of erection) F3 manufactured in advance. Insert and install.
(9) Next, as shown in FIG. 13, while the main bars (flexible reinforcing bars) S are sequentially built, the upper frame F3 is lowered into the continuous wall construction groove H by a predetermined depth, and the reinforcing bar curing base is used. A wedge member 38 is attached to the head of the main reinforcing bar (flexible reinforcing bar) S 29.
(10) Next, as shown in FIG. 14, the head of the main reinforcing bar (flexible reinforcing bar) S is fixed to the reinforcing bar curing base 29 by the wedge member 38, and the upper main reinforcing bar (flexible reinforcing bar) S is cut. In addition, what is shown in FIG. 16 is the completion figure of construction by a flexible reinforcing bar.
(11) Finally, concrete is cast to the lower part of the reinforcing bar curing base 29 to construct a continuous wall, and then the reinforcing bar curing base 29 is removed.
[0016]
Next, a method of attaching the main reinforcing bar (flexible reinforcing bar) S and the lower frame F1, the intermediate frame F2, and the upper frame F3 will be described with reference to FIG.
As shown in FIGS. 8A and 8B, each of the frames described above is made of steel in order to maintain the pitch and interval of the main reinforcing bars (flexible reinforcing bars) S built in the continuous wall construction groove H. Are formed in a box shape to form a frame F (for erection). A predetermined number of bolts 33 are attached to the frame (for erection) F in advance at predetermined positions. When the frame (for erection) F and the main reinforcement (flexible reinforcing bar) S are attached, the bolts 33 and 33 are attached. A main reinforcing bar (flexible reinforcing bar) S is inserted between them, pressed by a mounting plate 32, and fixed by a nut 34.
[0017]
Next, a method for attaching the horizontal reinforcing bar panel Y in the above-described mounting method will be described with reference to FIG. <The attachment method of the horizontal reinforcement panel of the said procedure (5), (7) is shown. >
FIG. 10A shows the appearance of the horizontal reinforcing bar panel Y. FIG. As shown in the drawing, a grid-like panel is constituted by the assembled reinforcing bars 35 and the horizontal reinforcing bars 36. Further, (B), (C), and (D) show the mounting state of the horizontal reinforcing bar panel Y, as shown in (B) while passing the main reinforcing bar (flexible reinforcing bar) S through the Ω-type mounting bracket 37 in the drawing. It will be attached to.
[0018]
Next, attachment of the reinforcing bar curing base 29 and the wedge member 38 in the procedures (9) and (10) described above will be described with reference to FIGS.
As shown in FIG. 5 or FIG. 15A, a fixed portion 31 of the wedge member 38 is provided in advance at a predetermined position of the reinforcing bar curing base 29. A slit wedge member 38 through a main reinforcing bar (flexible reinforcing bar) S shown in FIG. 15B is inserted into the fixing portion 31 and fixed. After the fixing, the main reinforcing bar (flexible reinforcing bar) S at the upper part of the wedge member 38 is cut.
[0019]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
(1) According to the present invention, it is possible to construct a continuous wall even with a low head. In addition, the amount of excavated soil for securing the work space is reduced, and the economy is improved.
(2) According to the present invention, it is possible to build reinforcing bars continuously without a joint, and the cost efficiency is greatly improved, and the process can be shortened by increasing the efficiency of building reinforcing bars. Further, there is no joint in the main reinforcement, and the joint portion does not become a weak point due to an earthquake or the like, and it is possible to construct a structurally stable and highly reliable continuous wall.
(3) In this invention, since the head height required for the work is small, the work floor is correspondingly high, and the amount of decrease in the groundwater level is small. For this reason, the influence on the surrounding environment due to the lowering of the groundwater level is reduced.
(4) In this invention, since the production of flexible reinforcing bars is performed in the factory, the production area for reinforcing bar is not required on site. In addition, the temporary storage area may be a small area. Therefore, the construction range of the continuous wall under the road of the urban area where it is difficult to secure the site is widened.
(5) By this invention, the bundling work according to the required number of flexible rebars which was impossible with the conventional rebar erection device became possible mechanically. Therefore, labor saving and cost reduction are possible, and a large work space for performing the binding work in advance is unnecessary.
(6) In the conventional construction of flexible reinforcing bars, the frames for maintaining the width and pitch of the main bars were continuously attached. However, according to the present invention, the frame function can be exhibited only by attaching the frames intermittently. became. For this reason, it is possible to reduce material costs and labor costs for production, delivery, mounting, joints, and the like.
(7) In the conventional construction of flexible reinforcing bars, it was necessary to attach in advance to the main bars a hardware for hanging the reinforcing bar rods assembled in advance. However, according to this invention, it becomes possible to attach a lightweight horizontal rebar panel assembled separately on the front and back in advance with a simple fixing bracket according to the construction of the rebar, it is not necessary to attach the hardware to the main reinforcement in advance, and the hardware is It does not become an obstacle when building reinforcing bars. Therefore, the workability of installing reinforcing bars and attaching horizontal reinforcing bars is improved, and the cost can be reduced.
(8) In the conventional construction of flexible reinforcing bars, reinforcing bars were received by the guide wall through the frame. Therefore, a strong frame is required over the entire length in the depth direction of the continuous wall. However, in this invention, since the top end of the main muscle is fixed to the curing base using the wedge member, the conventional strong and continuous frame is unnecessary, and intermittently in order to maintain the width and pitch of the main muscle. It is only necessary to attach the frame to. Therefore, material costs and labor costs are reduced, and work efficiency is improved.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing a flexible reinforcing bar erection device according to the present invention.
FIG. 2 is a front view showing an example of a flexible reinforcing bar erection device according to the present invention.
FIG. 3 is a plan view in FIG. 2;
FIG. 4 is a structural explanatory view showing a guide roller mechanism as a reinforcing bar guiding means, (A) is a structural explanatory view from above, and (B) is a structural explanatory view from the side.
FIG. 5 is an explanatory diagram showing a situation in which a reinforcing bar curing base is installed at the upper end of the continuous wall construction groove.
FIG. 6 is an explanatory diagram showing a situation where the main bar is sent out from the drum and the guide rollers are relayed and bound together.
FIG. 7 is an explanatory view showing a state where a lower frame manufactured in advance is attached to a main bar while being suspended.
FIGS. 8A and 8B are explanatory views showing a method of attaching the main bar and the frame, where FIG. 8A shows the attachment situation, and FIG. 8B shows the details of the attachment portion.
FIG. 9 is an explanatory view showing a situation in which main bars are sequentially built, pre-assembled horizontal reinforcing bar panels are attached to the main bars, and a lower frame is lowered into a continuous wall construction groove.
FIGS. 10A and 10B are explanatory views showing a method for attaching a horizontal reinforcing bar panel in the erection method according to the present invention, wherein FIG. 10A shows the appearance of the horizontal reinforcing bar panel, FIG. C) and (D) show the mounting brackets of the horizontal rebar panel.
FIG. 11 is an explanatory view showing a situation where an intermediate frame manufactured in advance is attached to a main bar.
FIG. 12 is an explanatory view showing a situation where an upper frame manufactured in advance is attached to the main bar.
FIG. 13 is an explanatory view showing a situation in which main bars are sequentially built, an upper frame is lowered into a continuous wall construction groove, and a wedge member is attached to the main bar head.
FIG. 14 is an explanatory diagram showing a situation in which the main muscle head is fixed to the reinforcing bar curing base with a wedge member and the upper main muscle is cut.
FIGS. 15A and 15B are explanatory views showing a mounting state of the reinforcing bar curing base and the wedge member, wherein FIG. 15A shows a fixing portion of the wedge member in the reinforcing bar curing base, and FIG. 15B shows an outline of the wedge member.
FIG. 16 is a view showing the completion of building with the flexible reinforcing bar of the present invention.
[Explanation of symbols]
10. Frame body 11 ... Drum 12 ... Guide roller 13 ... Wheel 14 ... Guide roller 15 ... Hydraulic motor 16 ... Roller chain 17 ... ··· Solenoid valve storage box 18 ··· Swivel 19 ··· Slip ring 20 ··· Brake cylinder 21 ··· Gearing 22 ··· Pin (shaft)
23 ... Roller 24 ... Roller 25 ... Roller 26 ... Roller 27 ... Roller 28 ... Roller 29 ... Reinforcement curing base 30 ... Scaffolding Plate 31 ··· Fixing portion 32 ··· Mounting plate 33 ··· Bolt 34 ··· Nut 35 ··· Assembly bar 36 ··· Horizontal bar 37 ··· Mounting bracket 38 ··· ... Wedge member F ... Frame (for erection)
F1 ... lower frame F2 ... intermediate frame F3 ... upper frame H ... groove P for continuous wall construction ... roller mounting member R ... rail S ... main bar (flexible Rebar)
Y ··· Horizontal rebar panel W · · · Reinforcement frame

Claims (5)

フレーム体と、このフレーム体に設けられ複数本のフレキシブル鉄筋の受入・送出を行う鉄筋供給手段と、前記フレーム体に設けられ前記鉄筋供給手段により送出されるフレキシブル鉄筋を中継するとともに、所要本数のフレキシブル鉄筋を一定の結束形状にセットアップしながら建込み目標位置へ誘導する鉄筋誘導手段とから構成したことを特徴とするフレキシブル鉄筋の建込み装置。A frame body, a reinforcing bar supply means for receiving and sending out a plurality of flexible reinforcing bars provided on the frame body, a flexible reinforcing bar provided on the frame body and fed by the reinforcing bar supply means, and a required number A flexible reinforcing bar erection device comprising a reinforcing bar guiding means that guides a flexible reinforcing bar to a target position while setting it up in a fixed binding shape. 前記鉄筋供給手段は、駆動手段を備えたドラムからなることを特徴とする請求項1記載のフレキシブル鉄筋の建込み装置。2. The flexible reinforcing bar erection device according to claim 1, wherein the reinforcing bar supplying means is composed of a drum provided with driving means. 前記駆動手段は、モータ機構からなることを特徴とする請求項2記載のフレキシブル鉄筋の建込み装置。3. The flexible reinforcing bar erection device according to claim 2, wherein the driving means comprises a motor mechanism. 前記鉄筋誘導手段は、ガイドローラ機構からなることを特徴とする請求項1記載のフレキシブル鉄筋の建込み装置。The flexible reinforcing bar erection device according to claim 1, wherein the reinforcing bar guiding means includes a guide roller mechanism. 次の第1工程〜第11工程の各工程からなることを特徴とするフレキシブル鉄筋の建込み方法。
(1)地下連続壁構築用溝の上端部に、梁材からなるフレキシブル鉄筋養生ベースを設置する第1工程。
(2)前記フレキシブル鉄筋養生ベースを建込み目標として、前記地下連続壁構築用溝の上部に、前記請求項1ないし4記載のフレキシブル鉄筋の建込み装置を設置する第2工程。
(3)鉄筋供給手段によりフレキシブル鉄筋を送出していき、鉄筋誘導手段を中継して所要本数のフレキシブル鉄筋を一定の結束形状にセットアップした後、所定のピッチで結束して主筋としていく第3工程。
(4)前記主筋を前記フレキシブル鉄筋養生ベース上まで引き出し、鉄筋の建込み完了時に底部フレームとなる予め製作した枠体を主筋の内側に挿入し、吊り下げて取り付ける第4工程。
(5)前記主筋を順次建込みつつ、予め組み立てた横鉄筋パネルを主筋に取り付け、前記第4工程における枠体を前記地下連続壁構築用溝に所定深さ(間隔)分降ろす第5工程。
(6)前記フレキシブル鉄筋養生ベース上の主筋の内側に、鉄筋の建込み完了時に中間部フレームとなる予め製作した枠体を挿入し、取り付ける第6工程。
(7)前記主筋を順次建込みつつ、予め組み立てた横鉄筋パネルを主筋に取り付け、前記第6工程における枠体を前記地下連続壁構築用溝に所定深さ(間隔)分降ろす第7工程。
(8)前記フレキシブル鉄筋養生ベース上の主筋の内側に、鉄筋の建込み完了時に上部フレームとなる予め製作した枠体を挿入し、取り付ける第8工程。
(9)前記主筋を順次建込みつつ、前記第8工程における枠体を前記地下連続壁構築用溝に所定深さ(間隔)分降ろすとともに、前記フレキシブル鉄筋養生ベース上の主筋頭部に楔部材を取り付ける第9工程。
(10)前記主筋頭部を、前記フレキシブル鉄筋養生ベースに前記楔部材を用いて固定し、固定部の上部で主筋を切断する第10工程。
(11)前記フレキシブル鉄筋養生ベースの下部までコンクリートを打設し、地下連続壁を構築した後、フレキシブル鉄筋養生ベースを撤去する第11工程。
A flexible reinforcing bar erection method comprising the following first to eleventh steps.
(1) The 1st process of installing the flexible reinforcing bar curing base which consists of a beam material in the upper end part of the groove for underground continuous wall construction.
(2) A second step of installing the flexible reinforcing bar erection device according to any one of claims 1 to 4 above the groove for constructing the underground continuous wall with the flexible reinforcing bar curing base as an erection target.
(3) The third step of sending the flexible reinforcing bars by the reinforcing bar supply means, setting up the required number of flexible reinforcing bars into a fixed binding shape by relaying the reinforcing bar guiding means, and binding them at a predetermined pitch to form the main reinforcing bars .
(4) A fourth step in which the main bar is pulled out onto the flexible reinforcing bar curing base, a pre-manufactured frame that becomes a bottom frame when the reinforcing bar has been installed is inserted inside the main bar, and is hung and attached.
(5) A fifth step of attaching a pre-assembled horizontal reinforcing bar panel to the main bar while sequentially building the main bar, and lowering the frame body in the fourth step to the underground continuous wall construction groove by a predetermined depth (interval).
(6) A sixth step of inserting and attaching a pre-manufactured frame to be an intermediate frame when the reinforcing bar has been installed inside the main bar on the flexible reinforcing bar curing base.
(7) A seventh step in which the prefabricated horizontal reinforcing bar panel is attached to the main reinforcing bar while the main reinforcing bar is sequentially built, and the frame in the sixth step is lowered to the groove for constructing the underground continuous wall by a predetermined depth (interval).
(8) The 8th process which inserts and attaches the frame body produced beforehand as an upper frame at the time of completion of construction of a reinforcing bar inside the main reinforcement on the flexible reinforcing bar curing base.
(9) The frame body in the eighth step is lowered by a predetermined depth (interval) in the underground continuous wall construction groove while the main bars are sequentially built, and a wedge member is formed on the main muscle head on the flexible reinforcing bar curing base. 9th process of attaching.
(10) A tenth step of fixing the main muscle head to the flexible reinforcing steel curing base using the wedge member and cutting the main muscle at an upper portion of the fixing portion.
(11) An eleventh step in which concrete is cast to the lower part of the flexible reinforcing bar curing base to construct a continuous underground wall, and then the flexible reinforcing bar curing base is removed.
JP15728596A 1996-06-18 1996-06-18 Flexible rebar erection device and erection method Expired - Fee Related JP3728016B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15728596A JP3728016B2 (en) 1996-06-18 1996-06-18 Flexible rebar erection device and erection method

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Application Number Priority Date Filing Date Title
JP15728596A JP3728016B2 (en) 1996-06-18 1996-06-18 Flexible rebar erection device and erection method

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JPH101942A JPH101942A (en) 1998-01-06
JP3728016B2 true JP3728016B2 (en) 2005-12-21

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JP4494272B2 (en) * 2005-03-31 2010-06-30 鹿島建設株式会社 Housing installation apparatus and housing installation method
CN108643581B (en) * 2018-07-06 2023-09-08 柳州欧维姆机械股份有限公司 Pretensioned broken line reinforcement non-character type roller bending device
CN116201324B (en) * 2023-04-28 2023-07-14 山西建筑工程集团有限公司 Net hanging device for building construction

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