JPH0782892A - Build-in method of temporary steel column for reverse placing construction method - Google Patents

Build-in method of temporary steel column for reverse placing construction method

Info

Publication number
JPH0782892A
JPH0782892A JP5226796A JP22679693A JPH0782892A JP H0782892 A JPH0782892 A JP H0782892A JP 5226796 A JP5226796 A JP 5226796A JP 22679693 A JP22679693 A JP 22679693A JP H0782892 A JPH0782892 A JP H0782892A
Authority
JP
Japan
Prior art keywords
pillar
pile
guide
column
pile hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5226796A
Other languages
Japanese (ja)
Inventor
Shinji Matsuoka
真次 松岡
Tadashi Yamaguchi
正 山口
Hiroshi Hara
博 原
Toshio Harada
敏雄 原田
Hiroyuki Umegaki
裕行 梅垣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takenaka Komuten Co Ltd
Original Assignee
Takenaka Komuten Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takenaka Komuten Co Ltd filed Critical Takenaka Komuten Co Ltd
Priority to JP5226796A priority Critical patent/JPH0782892A/en
Publication of JPH0782892A publication Critical patent/JPH0782892A/en
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To build in a precast main setting pillar accurately and with good workability. CONSTITUTION:For supporting a precast main setting pillar made of concrete as a temporary steel column for supporting an underground building frame in order made from the upper story by a reverse placing construction method with the upper end part of a pile P, a guide pipe 11 provided with an adjusting means adjusting the position in the horizontal direction of the lower end part against a pile hole PH is inserted into the pile hole PH, so as to perform a guide installing work fixing it to the ground in the adjusted condition in a decided posture and position. Next a pillar installing work is carried out, in which the precast main setting pillar C is inserted and brought down up to the decided position in the pile hole HP supported with the pile P in the condition in which the position in the horizontal direction against the pile hole PH is regulated in the guide pipe 11, and fixedly supported. After the precast main setting pillar C is in the condition supported with the upper end part of the pile P, the guide pipe 11 is drawn out from the pile hole PH.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、逆打ち工法で上階から
順に作成される梁やスラブなどの地下躯体を支持するた
めの構真柱を地下躯体の作成に先立って建込む方法で、
詳しくは、地下躯体を構成するコンクリート製のプレキ
ャスト本設柱を前記の構真柱として杭の上端部に支持さ
せて建込む方法に関する。
BACKGROUND OF THE INVENTION The present invention is a method of constructing a structure column for supporting an underground skeleton such as a beam or a slab, which is sequentially created from the upper floor by a reverse construction method, prior to the creation of the underground skeleton,
More specifically, the present invention relates to a method in which a precast main construction column made of concrete that constitutes an underground skeleton is supported by the upper end portion of the pile as the above-mentioned structure column and is installed.

【0002】[0002]

【従来の技術】プレキャスト本設柱を構真柱として建込
む場合には、事後の逆打ち工法による地下躯体作成時に
おける本設柱にまつわる施工を大幅に削減することがで
き、地下躯体の作成を作業性良く行うことができる利点
がある。反面、この利点を真に発揮する上で、仮設柱を
構真柱として建込む場合に比較して、構真柱の建込み精
度に非常に高度なものが要求される。上記のような利点
を有する逆打ち工法用構真柱の建込み方法として従来で
は、特開昭62‐86242号公報や特開昭63‐67
344号公報などで開示された技術が知られている。こ
れは、仮設柱の建込み技術をそのまま応用したもので、
仮設柱に代えて、プレキャスト本設柱を杭孔に挿入して
そのプレキャスト本設柱の下端部を杭の上端部に支持さ
せる方法である。
2. Description of the Related Art When precast main columns are to be built as true columns, it is possible to drastically reduce the construction related to the main columns when creating a substructure by the upside down construction method. There is an advantage that it can be performed with good workability. On the other hand, in order to truly exert this advantage, it is required to have a very high degree of accuracy in the installation of the structure columns, as compared with the case where the temporary columns are installed as the structure columns. Conventionally, as a method of erection of a structure column for the upside down construction method having the above-mentioned advantages, there have been hitherto disclosed JP-A-62-86242 and JP-A-63-67.
The technique disclosed in Japanese Patent No. 344, etc. is known. This is a direct application of the construction technology for temporary columns,
It is a method of inserting a precast main installation column into a pile hole in place of the temporary installation column and supporting the lower end of the precast main installation column on the upper end of the pile.

【0003】[0003]

【発明が解決しようとする課題】しかし、一般に、構真
柱の杭孔への挿入は、構真柱をつり下げて杭孔内に下降
させるつり込み形態で行われるから、杭孔内につり込ま
れた構真柱の下端部は杭孔内で水平方向に自由に動ける
状態にある。その結果、上記従来の技術によるときは、
プレキャスト本設柱の上端部は、容易な地上作業により
所定の水平方向位置に精度良く位置させることができる
ものの、プレキャスト本設柱の下端部を所定の水平方向
位置に精度良く位置させることが難しく、かつ、下端部
が所定の水平方向位置に位置しているか否かを確かめる
ことが困難で、そのため、杭の上端部に対してプレキャ
スト本設柱の下端部の水平方向位置がずれたり、プレキ
ャスト本設柱の姿勢が傾いたりするなど、プレキャスト
本設柱の建込みに要求される精度を確保する状態に作業
性良く建込むことができなかった。特に、杭を作成する
ためのコンクリートの打設後、その打設コンクリートの
上端部に下端部が挿入するようにプレキャスト本設柱を
設置することにより、プレキャスト本設柱を杭の上端部
に支持させるためのコンクリート打設を杭作成のための
コンクリート打設で兼用して、同一種作業の集約化によ
る作業性の向上を図った場合には、コンクリート打設
後、プレキャスト本設柱の設置終了までに時間的な制約
があることから、プレキャスト本設柱の設置作業が慌た
だしいものになり易く、一層作業性が悪いものになって
いた。本発明の目的は、精度良く、しかも、作業性良く
プレキャスト本設柱を建込むことができるようにする点
にある。
However, in general, since the structure column is inserted into the pile hole by suspending the structure column and lowering it into the pile hole, it is suspended in the pile hole. The lower end of the incorporated true column is in a state where it can move freely in the horizontal direction within the pile hole. As a result, when using the above conventional technique,
Although the upper end of the precast main installation column can be accurately positioned at a predetermined horizontal position by easy ground work, it is difficult to accurately position the lower end of the precast main installation column at a predetermined horizontal position. Moreover, it is difficult to confirm whether or not the lower end portion is located at a predetermined horizontal position. Therefore, the horizontal position of the lower end portion of the precast main installation column is displaced from the upper end portion of the pile, or the precast It was not possible to erected the precast main column with sufficient workability, such as the posture of the main column being tilted. In particular, after placing the concrete for creating the pile, by installing the precast main pillar so that the lower end is inserted into the upper end of the cast concrete, the precast main pillar is supported on the upper end of the pile. When the concrete pouring for building the pile is also used as the concrete pouring to create the pile and the workability is improved by consolidating the work of the same type, the installation of the precast main pillar is completed after the concrete is placed. Due to the time constraints, the work of installing the precast main pillars was likely to be busy, and the workability was even worse. An object of the present invention is to enable the precast main installation column to be installed with high accuracy and workability.

【0004】[0004]

【課題を解決するための手段】本発明の第1発明による
逆打ち工法用構真柱の建込み方法の特徴は、杭孔内に、
その杭孔に対する下端部の水平方向位置を調整するため
の調整手段を備えたガイドを挿入して所定の姿勢及び位
置に調整した状態で地盤に固定するガイド設置作業を行
い、次いで、前記プレキャスト本設柱を、前記ガイドで
杭孔に対する水平方向位置を規制した状態で杭で支持さ
れる杭孔内の所定の位置にまで下降挿入させて固定支持
する柱設置作業を行い、プレキャスト本設柱が杭の上端
部に支持された状態となった後にガイドを杭孔から抜き
出す点にある。
The feature of the method of erection of the upright construction column according to the first aspect of the present invention is that
A guide having an adjusting means for adjusting the horizontal position of the lower end portion with respect to the pile hole is inserted, and the guide is installed to be fixed to the ground in a state where the guide is adjusted to a predetermined posture and position, and then the precast book Perform the pillar installation work to fix and support the installation pillar by lowering it to a predetermined position in the pile hole supported by the pile in a state where the horizontal position with respect to the pile hole is restricted by the guide, and the precast main installation pillar is The point is that the guide is pulled out from the pile hole after being supported by the upper end of the pile.

【0005】本発明の第2発明による逆打ち工法用構真
柱の建込み方法の特徴は、第1発明において、前記杭を
作成するためのコンクリートを打設する前に前記ガイド
設置作業を行い、コンクリート打設後に、プレキャスト
本設柱の下端部を打設コンクリートの上端部に挿入させ
る状態で前記柱設置作業を行う点にある。
A feature of the method of erection of the column for the upright construction method according to the second aspect of the present invention is that the guide installation work is performed before the concrete for placing the pile is placed in the first aspect of the invention. After the concrete is poured, the pillar installation work is performed in a state where the lower end of the precast main pillar is inserted into the upper end of the cast concrete.

【0006】[0006]

【作用】第1発明によれば、地盤に固定したガイドによ
り、杭孔内のプレキャスト本設柱を杭孔に対して水平方
向で位置規制するから、ガイドが杭孔内に正確に設置さ
れていれば、プレキャスト本設柱をつり込み形式で設置
するにかかわらず、プレキャスト本設柱をガイドで案内
させて杭孔内に挿入するだけで、そのプレキャスト本設
柱の全体を杭孔に対する正確な水平方向位置に迅速に位
置させて固定することができる。そして、ガイドとし
て、下端部の杭孔に対する水平方向位置を調整するため
の調整手段付きのものを用いるから、ガイドをつり込み
形式で設置しながらも、ガイドを杭孔に挿入した状態で
の調整手段による下端部の水平方向位置調整と、地上で
容易に行える上端部の水平方向位置調整とを行うことに
より、作業性良くガイドを所定の姿勢及び位置に設置す
ることができる。しかも、ガイドはプレキャスト本設柱
の杭への支持後に撤去する仮設物で、その仮設のガイド
を地盤に固定させるから、前述のように、前記杭を作成
するためのコンクリートを打設する前に前記ガイド設置
作業を行い、コンクリート打設後に、プレキャスト本設
柱の下端部を打設コンクリートの上端部に挿入させる状
態で前記柱設置作業を行ういった作業形態を採用するこ
とができる。
According to the first aspect of the invention, the guide fixed to the ground restricts the position of the precast main installation column in the pile hole in the horizontal direction with respect to the pile hole, so that the guide is accurately installed in the pile hole. Therefore, regardless of whether the precast main pillar is installed in the suspended form, simply inserting the precast main pillar into the pile hole by guiding the precast main pillar with a guide will ensure that the entire It can be quickly positioned and fixed in a horizontal position. Then, since a guide with an adjusting means for adjusting the horizontal position of the lower end portion with respect to the pile hole is used, adjustment is performed while the guide is installed in the pile hole while the guide is installed in a suspended manner. By performing the horizontal position adjustment of the lower end portion by the means and the horizontal position adjustment of the upper end portion that can be easily performed on the ground, the guide can be installed in a predetermined posture and position with good workability. Moreover, the guide is a temporary structure that is removed after the precast main pillar is supported on the pile.Because the temporary guide is fixed to the ground, as described above, before placing the concrete for creating the pile, It is possible to adopt a work form in which the guide installation work is performed, and after the concrete is poured, the pillar installation work is performed in a state where the lower end of the precast main installation pillar is inserted into the upper end of the poured concrete.

【0007】そして、上記の作業形態を採用すれば、つ
まり、第2発明によれば、プレキャスト本設柱の杭への
支持を杭の作成工程自体を利用して行えながらも、ガイ
ド設置作業を時間的余裕をもって作業性良く行うことが
できる。
If the above work mode is adopted, that is, according to the second aspect of the invention, the guide installation work can be performed while the precast main installation pillar is supported on the pile by using the pile creation process itself. It is possible to work with good time and with good time.

【0008】[0008]

【発明の効果】従って本発明によれば、ガイド設置作業
と、柱設置作業との二つの作業でプレキャスト本設柱を
設置しながらも、それら両設置作業をともに作業性良く
正確に行えるから、プレキャスト本設柱を精度良く、か
つ、作業性良く建込むことができるようになった。特に
請求項2記載のようにすれば、より一層作業性良く、か
つ、精度良くプレキャスト本設柱を建込むことができ
る。
According to the present invention, therefore, even though the precast main installation pillar is installed by the two operations of the guide installation work and the pillar installation work, both installation work can be accurately performed with good workability. Precast main columns can now be installed with good accuracy and workability. Particularly, according to the second aspect, the precast main installation column can be built with higher workability and accuracy.

【0009】[0009]

【実施例】逆打ち工法により上階から順に作成される地
下躯体は、図2に示すように、柱Cと梁BとスラブSと
を主要構成とするものである。柱C、梁B、スラブSは
RC造りのものであって、柱Cは、建設現場でサイト成
形されたプレキャスト製品であり、梁B及びスラブSは
場所打ちにより作成されたものである。前記柱Cは、図
1に示すように、逆打ち工法で地下躯体を作成する前
に、杭Pの上端部に支持されて順次作成される梁B及び
スラブSを支持する構真柱として建込まれたものであ
る。柱Cの下部には、前記構真柱として建込みにおいて
杭Pに支持されるようにその下端部が杭Pの上端部に埋
め込み固定される鉄骨利用の下部接合柱C1が下方に突
出する状態に埋め込み固定されており、上部には、上部
構造との接合部を形成する鉄骨利用の上部接合柱C2が
上方に突出する状態で埋め込み固定されている。この柱
Cの柱主筋のうち柱コンクリート部1内に埋め込まれて
いる内部柱主筋2の下端には、図7に示すように、前記
柱コンクリート部1よりも下方に突出して基礎F内に埋
め込まれる接合用の下部柱主筋3を連結するためのネジ
カップラ3cが装着されており、前記内部柱主筋2の上
端には、図4に示すように、柱コンクリート部1よりも
上方に突出して最上部の梁B内に埋め込まれる接合用の
上部柱主筋4を連結するためのネジカップラ4cが装着
されている。かつ、柱Cの梁Bとの接合部には、図5及
び図6に示すように、梁主筋のうち柱Cと接合するため
の接合用梁主筋5が埋め込み固定されており、この接合
用梁主筋5の端には、梁主筋のうち梁コンクリート部6
内の内部梁主筋7を連結するためのネジカップラ7cが
装着されている。更に、柱コンクリート部1の梁Bとの
取り合い部には、梁コンクリート部6の端部を入れ込ま
せて梁コンクリート部6の端部の柱Cに対する鉛直面に
沿った方向の移動を阻止する欠き込み8を形成してあ
る。9は柱Cの帯筋、10は杭主筋である。前記柱、つ
まり、本設柱Cを構真柱として設置する建込みは、前記
下部主筋3及び上部主筋4を接合していない状態で行わ
れ、この構真柱建込み工程は、図1に示すように、ガイ
ド設置作業と、その後の柱設置作業と、本設柱Cが杭P
の上端部に支持された状態となった後のガイド管撤去作
業とを行う工程である。前記ガイド設置作業は、図1の
(イ)に示すように、杭孔PH内に、その杭孔PHに対
する下端部の水平方向位置を調整するための調整手段を
備えた管上のガイド(以下ガイド管と称する。)11を
挿入して所定の姿勢及び位置に調整した状態で地盤に固
定する作業であって、杭作成のうち鉄筋カゴ12の建込
みが完了したのちで、かつ、杭Pを作成するためのコン
クリートを打設する前に行われる。ガイド管11につい
て説明すると、ガイド管11は、前記の調整手段の他に
ガイド管11の鉛直度を検出するための検出手段を備え
ており、上端部には、地上に設置した架台13に受け鉄
骨14を介して載置支持されるつり部15が固着されて
いる。前記調整手段は、図9にも示すように、ガイド管
11の下端部の周方向に等間隔を隔てた四箇所それぞれ
に、伸長することにより杭孔PHの内周壁、具体的には
スタンドパイプSPの内周面を押してガイド管11を水
平方向に移動させるジャッキ16を装着して構成されて
いる。つまり、調整手段は、各ジャッキ16の伸縮量を
調整することによりガイド管11下端部のスタンドパイ
プSPに対する水平方向の左右前後位置を調整するよう
に構成されている。なお、ジャッキ16は、使用条件を
考えて水中ジャッキであることが好ましい。前記検出手
段は、図8にも示すように、ガイド管11に水管17を
平行に取り付け、その水管17底部の軸芯位置に糸18
を止着し、その糸18の端部にフロート19を止着し、
前記水管17の上部蓋20の軸芯位置に上部からフロー
ト19を目視するための窓21を形成して構成されてい
る。つまり、糸18は常時フロート19により上方に引
っ張られて鉛直姿勢に保持されており、水管17が鉛直
姿勢にあればフロート19は軸芯位置にあるが、水管1
7が傾いていれば、その傾き度合い及び方向に応じた量
及び方向をもって軸芯位置からフロート19がずれる。
従って、この検出手段によるときは、窓21からフロー
ト19を目視して、フロート19が軸芯位置に位置する
ように水管17、つまり、ガイド管11の姿勢を調整す
ることによりガイド管11を鉛直姿勢に調整することが
できるのである。そして、前記ガイド管11の杭孔PH
への挿入は、ガイド管11をつり下げて杭孔PH内に下
降させることで行い、ガイド管11の姿勢及び位置の調
整は、調整手段による下端部の杭孔PHに対する水平方
向位置調整と、架台13に対する上端部の水平方向位置
調整とにより行い、ガイド管11の固定は、架台13へ
の固定と、ジャッキ16によるスタンドパイプSPに対
する水平方向での突っ張りとにより行う。前記柱設置作
業は、図1の(ロ)(ハ)に示すように、本設柱Cを、
ガイド管11内に接触させてそのガイド管11に対する
水平方向位置を規制した状態で挿入することにより杭P
で支持される所定の位置にまで下降させて固定支持する
作業であって、杭Pを作成するためのコンクリートの打
設後で、かつ、その打設コンクリートが硬化する前に、
その打設コンクリートの上端部に下部接合柱Cの下端部
を挿入させる状態で行われる。前記本設柱Cのガイド管
11内への挿入は、本設柱Cをつり下げてガイド管11
内に下降させることで行い、本設柱Cの固定支持は、図
1の(ハ)に示すように、上部接合柱Cに装着させた仮
設部材22をガイド管11の上端に載置支持させること
で行う。前記本設柱Cのガイド管11内周面への接触
は、柱コンクリート部1で行うのではなく、柱コンクリ
ート部1よりも外方に突出する状態で本設柱Cの周方向
複数箇所に装着した仮設の当たり23により行うように
してある。前記ガイド管撤去作業は、図1の(ニ)に示
すように、ガイド管11を上方に引き上げることで行わ
れ、杭Pのコンクリートが硬化して下部接合柱Cが杭P
の上端部に固定されることで本設柱Cが杭Pの上端部に
支持された状態となった後に行われる。そして、ガイド
管11の撤去後に、杭孔PHに対する埋め戻しが行わ
れ、その後に、逆打ち工法による地下躯体の作成が行わ
れる。地下躯体の作成は、躯体工事と掘削工事とを行う
ことで実施され、この地下躯体の作成について簡単に説
明すると、先ず、最上階の梁B及びスラブSを本設柱C
に接合させて支持させる状態で作成し、その後、中間階
の梁B及びスラブSを上方のものから順に本設柱Sに支
持させる状態で作成し、最後に基礎Fを本設柱Sに接合
させる状態で作成して地下躯体を完成する。そして、最
上階の梁Bの作成のうち、梁Bに対する配筋工事の前、
或いは、後、若しくは、配筋工事と同時に、上部柱主筋
4を内部柱主筋2に連結し、その状態で最上階の梁Bを
作成するためのコンクリートを打設することにより、本
設柱Cの上端への梁Bの接合が行われ、中間階の梁Bの
作成のうち、梁Bに対する配筋工事において接合用梁主
筋5に内部梁主筋7を連結し、その状態で梁Bを作成す
るためのコンクリートを打設することにより、本設柱S
への梁Bの接合が行われ、基礎Fの作成のうち、基礎F
に対する配筋工事の前、或いは、後、若しくは、配筋工
事と同時に、下部柱主筋3を内部柱主筋2に連結し、そ
の状態で基礎Fを作成するためのコンクリートを打設す
ることにより、本設柱S下端の基礎Fへの接合が行われ
る。
EXAMPLE As shown in FIG. 2, an underground skeleton formed in order from the upper floor by the reverse construction method has pillars C, beams B, and slabs S as main components. The pillar C, the beam B, and the slab S are RC-made, the pillar C is a site-cast precast product at the construction site, and the beam B and the slab S are cast. As shown in FIG. 1, the pillar C is constructed as a true pillar supporting the beam B and the slab S which are sequentially supported by the upper end of the pile P before the underground structure is created by the upside down construction method. It is embedded. In the lower part of the column C, a lower joint column C1 using a steel frame, the lower end of which is embedded and fixed to the upper end of the pile P so as to be supported by the pile P in the construction as the structure column, projects downward. The upper joint pillar C2 using a steel frame forming a joint with the upper structure is embedded and fixed in the upper portion in a state of protruding upward. As shown in FIG. 7, the lower end of the internal column main bar 2 embedded in the column concrete part 1 of the column main bar of this column C projects below the column concrete part 1 and is embedded in the foundation F. A screw coupler 3c for connecting the lower column main bar 3 for joining is attached, and the upper end of the inner column main bar 2 is protruded above the column concrete part 1 as shown in FIG. A screw coupler 4c for connecting the joining upper column main bar 4 embedded in the beam B is attached. In addition, as shown in FIGS. 5 and 6, a beam main bar 5 for bonding, which is a beam main bar to be bonded to the column C, is embedded and fixed at the joint between the column C and the beam B. At the end of the beam main bar 5, the beam concrete part 6 of the beam main bar is
A screw coupler 7c for connecting the internal beam main bars 7 is mounted. Further, the end portion of the beam concrete portion 6 is inserted into the joint portion of the column concrete portion 1 with the beam B to prevent the end portion of the beam concrete portion 6 from moving in the direction along the vertical plane with respect to the column C. A notch 8 is formed. Reference numeral 9 is a band of the column C, and 10 is a main reinforcement of the pile. The pillar, that is, the erection for installing the main pillar C as the true pillar is performed in a state where the lower main bar 3 and the upper main bar 4 are not joined. As shown, the guide installation work, the subsequent pillar installation work, and the main installation pillar C are piles P.
Is a step of removing the guide tube after being supported by the upper end of the guide tube. In the guide installation work, as shown in FIG. 1A, a guide on a pipe provided with an adjusting means for adjusting the horizontal position of the lower end portion with respect to the pile hole PH (hereinafter referred to as “the guide hole”). (Hereinafter referred to as a guide tube) 11 and is fixed to the ground in a state in which it is adjusted to a predetermined posture and position, and after the building of the reinforcing bar basket 12 in the pile creation is completed, and the pile P Done before pouring concrete to create. Explaining the guide tube 11, the guide tube 11 is provided with a detecting means for detecting the verticality of the guide tube 11 in addition to the adjusting means described above. A suspended portion 15 mounted and supported through the steel frame 14 is fixed. As shown in FIG. 9, the adjusting means extends to the inner peripheral wall of the pile hole PH, specifically, a stand pipe, by extending to the four locations at equal intervals in the circumferential direction of the lower end of the guide tube 11. The jack 16 is mounted to push the inner peripheral surface of the SP and move the guide tube 11 in the horizontal direction. That is, the adjusting means is configured to adjust the horizontal and horizontal positions of the lower end of the guide tube 11 with respect to the stand pipe SP by adjusting the expansion and contraction amount of each jack 16. The jack 16 is preferably an underwater jack in consideration of usage conditions. As shown in FIG. 8, the detecting means attaches the water pipe 17 to the guide pipe 11 in parallel, and the thread 18 is placed at the axial center position of the bottom of the water pipe 17.
The float 19 to the end of the thread 18,
A window 21 for visually observing the float 19 from above is formed at the axial center position of the upper lid 20 of the water pipe 17. That is, the yarn 18 is always pulled upward by the float 19 and held in the vertical posture, and if the water pipe 17 is in the vertical posture, the float 19 is in the axial center position, but the water pipe 1
If 7 is tilted, the float 19 is displaced from the axial center position by an amount and a direction depending on the degree and direction of the tilt.
Therefore, when using this detecting means, the float 19 is visually observed through the window 21 and the attitude of the water pipe 17, that is, the guide pipe 11 is adjusted so that the float 19 is located at the axial center position. The posture can be adjusted. Then, the pile hole PH of the guide pipe 11
The guide tube 11 is inserted into the pile hole PH by hanging the guide tube 11, and the posture and position of the guide tube 11 are adjusted by adjusting the horizontal position of the lower end portion with respect to the pile hole PH. The guide pipe 11 is fixed by fixing the guide pipe 11 to the pedestal 13 and by horizontally supporting the stand pipe SP with the jack 16 in the horizontal direction. As shown in (b) and (c) of FIG.
The pile P is made by contacting the inside of the guide pipe 11 and inserting the guide pipe 11 in a state in which the horizontal position of the guide pipe 11 is restricted.
In the work of descending to a predetermined position supported by and fixedly supporting it, after placing the concrete for making the pile P and before hardening the placed concrete,
It is performed in a state where the lower end of the lower joint column C is inserted into the upper end of the cast concrete. To insert the main installation pillar C into the guide tube 11, the main installation pillar C is suspended and the guide tube 11 is inserted.
As shown in FIG. 1C, the temporary support member 22 attached to the upper joint post C is placed and supported on the upper end of the guide tube 11 for the fixed support of the main installation post C. Do that. The contact of the main pillar C with the inner peripheral surface of the guide tube 11 is not performed in the concrete pillar section 1 but in a plurality of circumferential positions of the main pillar C in a state of protruding outward from the concrete pillar section 1. It is designed to be carried out by a temporary contact 23 attached. The guide pipe removal work is performed by pulling up the guide pipe 11 as shown in FIG. 1D, the concrete of the pile P is hardened, and the lower joint pillar C is fixed to the pile P.
It is performed after the main installation pillar C is in a state of being supported by the upper end of the pile P by being fixed to the upper end of the pile P. Then, after the guide pipe 11 is removed, the pile hole PH is backfilled, and thereafter, the underground structure is created by the reverse driving method. The construction of the underground skeleton is carried out by performing the skeleton construction and the excavation work. To briefly explain the construction of the underground skeleton, first, the beam B and the slab S on the top floor are the main installation columns C.
The beam B and the slab S on the intermediate floor are made to be supported by the main pillar S in order from the upper one, and finally the foundation F is joined to the main pillar S. Create it in a state that allows it to complete the underground structure. Then, in the creation of the beam B on the top floor, before the reinforcement work for the beam B,
Alternatively, after or simultaneously with the reinforcement work, the upper pillar main bar 4 is connected to the internal pillar main bar 2 and, in that state, the concrete for creating the beam B on the uppermost floor is placed, so that the main pillar C The beam B is joined to the upper end of the beam. Of the beams B on the intermediate floor, the internal beam main bar 7 is connected to the beam main bar 5 for connection in the reinforcement work for the beam B, and the beam B is created in that state. By placing concrete for
The beam B is joined to the
Before, after, or at the same time as the bar arrangement work for, the lower column main bar 3 is connected to the inner column main bar 2 and by placing concrete for creating the foundation F in that state, The lower end of the main pillar S is joined to the foundation F.

【0010】〔別実施例〕上記実施例では、梁Bとスラ
ブSとを有する地下躯体を示したが、本発明は、梁Bが
なくて、図10に示すように、フラットスラブFSとし
た地下躯体にも適用することができる。この場合、構真
柱として建込む本設柱Cとしては、各フラットスラブF
Sとの接合部24はコンクリートのない仕口構造に構成
したプレキャスト製品を用いる。上記実施例では、ガイ
ド11としてガイド管を示したが、ガイド11はレール
状のものであっても良い。上記実施例では、ガイド11
の設置後に杭Pを作成するためのコンクリートを打設し
たが、本発明は杭Pを作成した後にガイド11を設置し
て実施しても良い。この場合は、杭Pに本設柱Cを支持
させるためのコンクリート打設が別途必要である。
[Other Embodiments] In the above embodiment, the underground skeleton having the beams B and the slabs S was shown. However, the present invention does not have the beams B, and a flat slab FS is provided as shown in FIG. It can also be applied to the underground structure. In this case, each of the flat slabs F is used as the permanent pillar C to be built as a true pillar.
As the joint 24 with S, a precast product having a concrete-free joint structure is used. Although the guide tube is shown as the guide 11 in the above embodiment, the guide 11 may be a rail-shaped one. In the above embodiment, the guide 11
Although the concrete for creating the pile P was placed after the installation of the above, the present invention may be implemented by installing the guide 11 after creating the pile P. In this case, concrete placing for supporting the main pillar C on the pile P is required separately.

【0011】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。
It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

【図面の簡単な説明】[Brief description of drawings]

【図1】本設柱の建込み工程を示す縦断面図FIG. 1 is a vertical cross-sectional view showing a construction process of a main installation column.

【図2】地下躯体要部の縦断面図[Figure 2] Longitudinal section of the main part of the underground structure

【図3】本設柱の正面図[Fig. 3] Front view of main installation column

【図4】本設柱上部構造を示す縦断面図FIG. 4 is a vertical cross-sectional view showing the upper structure of the main installation column.

【図5】本設柱の梁との接合部を示す縦断面図FIG. 5 is a vertical cross-sectional view showing a joint portion of a main installation column with a beam.

【図6】本設柱の梁との接合部を示す横断面図FIG. 6 is a transverse cross-sectional view showing a joint portion of a main installation column with a beam.

【図7】本設柱の基礎への接合部を示す縦断面図FIG. 7 is a vertical cross-sectional view showing a joint portion of a main installation pillar to a foundation.

【図8】水管の縦断面図FIG. 8 is a vertical sectional view of a water pipe.

【図9】本設柱とガイドと杭孔との関係を示す横断面図FIG. 9 is a cross-sectional view showing the relationship between the main installation pillar, the guide, and the pile hole.

【図10】別実施例を示す地下躯体要部の縦断面図FIG. 10 is a vertical cross-sectional view of the main part of the underground structure showing another embodiment.

【符号の説明】[Explanation of symbols]

C 本設柱 P 杭 PH 杭孔 11 ガイド管 C Main installation pillar P pile PH pile hole 11 Guide pipe

───────────────────────────────────────────────────── フロントページの続き (72)発明者 原田 敏雄 大阪府大阪市中央区本町四丁目1番13号 株式会社竹中工務店大阪本店内 (72)発明者 梅垣 裕行 大阪府大阪市中央区本町四丁目1番13号 株式会社竹中工務店大阪本店内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshio Harada 4-1-1-1, Honmachi, Chuo-ku, Osaka City, Osaka Prefecture Takenaka Corporation, Osaka Main Store (72) Inventor, Hiroyuki Umegaki, 4 Chome 1-13 Takenaka Corporation Osaka Main Store

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 逆打ち工法で上階から順に作成される地
下躯体を支持するための構真柱としてコンクリート製の
プレキャスト本設柱(C)を杭(P)の上端部に支持さ
せる逆打ち工法用構真柱の建込み方法であって、杭孔
(PH)内に、その杭孔(PH)に対する下端部の水平
方向位置を調整するための調整手段を備えたガイド(1
1)を挿入して所定の姿勢及び位置に調整した状態で地
盤に固定するガイド設置作業を行い、次いで、前記プレ
キャスト本設柱(C)を、前記ガイド(11)で杭孔
(PH)に対する水平方向位置を規制した状態で杭
(P)で支持される杭孔(PH)内の所定の位置にまで
下降挿入させて固定支持する柱設置作業を行い、プレキ
ャスト本設柱(C)が杭(P)の上端部に支持された状
態となった後にガイド(11)を杭孔(PH)から抜き
出す逆打ち工法用構真柱の建込み方法。
1. A reverse casting in which a concrete precast permanent pillar (C) is supported on the upper end of a pile (P) as a structural pillar for supporting an underground skeleton created in order from the upper floor by the reverse striking method. A method of erection of a true column for a construction method, wherein a guide (1) is provided in a pile hole (PH) for adjusting a horizontal position of a lower end portion with respect to the pile hole (PH).
1) Insert the guide and fix it to the ground in a state in which it is adjusted to a predetermined posture and position, and then perform the precast main installation pillar (C) with the guide (11) to the pile hole (PH). A pillar installation work is carried out in which the precast main installation pillar (C) is piled down by inserting it down into a predetermined position in the pile hole (PH) supported by the pile (P) in a state where the horizontal position is regulated and fixedly supported. (P) A method for erection of a true column for the reverse construction method in which the guide (11) is pulled out from the pile hole (PH) after being supported by the upper end portion.
【請求項2】 前記杭(P)を作成するためのコンクリ
ートを打設する前に前記ガイド設置作業を行い、コンク
リート打設後に、プレキャスト本設柱(C)の下端部を
打設コンクリートの上端部に挿入させる状態で前記柱設
置作業を行う請求項1記載の逆打ち工法用構真柱の建込
み方法。
2. The guide installation work is performed before placing concrete for forming the piles (P), and after the concrete is placed, the lower end of the precast main pillar (C) is placed at the upper end of the cast concrete. The method for erection of a true column for a reverse construction method according to claim 1, wherein the column installation work is performed in a state where the column is inserted.
JP5226796A 1993-09-13 1993-09-13 Build-in method of temporary steel column for reverse placing construction method Granted JPH0782892A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5226796A JPH0782892A (en) 1993-09-13 1993-09-13 Build-in method of temporary steel column for reverse placing construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5226796A JPH0782892A (en) 1993-09-13 1993-09-13 Build-in method of temporary steel column for reverse placing construction method

Publications (1)

Publication Number Publication Date
JPH0782892A true JPH0782892A (en) 1995-03-28

Family

ID=16850756

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5226796A Granted JPH0782892A (en) 1993-09-13 1993-09-13 Build-in method of temporary steel column for reverse placing construction method

Country Status (1)

Country Link
JP (1) JPH0782892A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009114662A (en) * 2007-11-02 2009-05-28 Kajima Corp Concrete solid permanent sub-substructural column
JP2012046950A (en) * 2010-08-26 2012-03-08 Taisei Corp Structure construction method and structure under construction
CN106760557A (en) * 2016-12-23 2017-05-31 浙江省建工集团有限责任公司 A kind of rear-mounted construction method of prefabrication component chip
CN114439248A (en) * 2022-04-07 2022-05-06 北京建工集团有限责任公司 Steel column installation method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009114662A (en) * 2007-11-02 2009-05-28 Kajima Corp Concrete solid permanent sub-substructural column
JP2012046950A (en) * 2010-08-26 2012-03-08 Taisei Corp Structure construction method and structure under construction
CN106760557A (en) * 2016-12-23 2017-05-31 浙江省建工集团有限责任公司 A kind of rear-mounted construction method of prefabrication component chip
CN114439248A (en) * 2022-04-07 2022-05-06 北京建工集团有限责任公司 Steel column installation method

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