JPS63199987A - Method of executing double pipe - Google Patents

Method of executing double pipe

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Publication number
JPS63199987A
JPS63199987A JP2977187A JP2977187A JPS63199987A JP S63199987 A JPS63199987 A JP S63199987A JP 2977187 A JP2977187 A JP 2977187A JP 2977187 A JP2977187 A JP 2977187A JP S63199987 A JPS63199987 A JP S63199987A
Authority
JP
Japan
Prior art keywords
pipe
inner pipe
inner tube
arm
tube
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
JP2977187A
Other languages
Japanese (ja)
Other versions
JP2566400B2 (en
Inventor
志村 登
大野 邦夫
健 上田
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.)
Tokyu Construction Co Ltd
Original Assignee
Tokyu Construction 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 Tokyu Construction Co Ltd filed Critical Tokyu Construction Co Ltd
Priority to JP62029771A priority Critical patent/JP2566400B2/en
Publication of JPS63199987A publication Critical patent/JPS63199987A/en
Application granted granted Critical
Publication of JP2566400B2 publication Critical patent/JP2566400B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】[Detailed description of the invention]

〈産業上の利用分野〉 本発明は二重管の施工法に関するものである。 〈従来の技術〉 上下水道管の漏水対策として、先行して構築した外管内
に別途のヒユーム管などの内管を挿入して二重管を構築
することが知られている。 この布設方法は、一般に次の工程で行われている。 (1)外管を構築する。 (2)立坑内に内管を吊り降ろす。 (3)吊り降ろした内管を台車に載せて外管内に運搬す
る。 (4)内管のレベル調整を行いながら、外管内に順次内
管を接続して延長する。 (5)外管と内管との周面間に、モルタルなどの充填材
を充填して防水処理を施す。 く本発明が解決しようとする問題点〉 前記した二重管の構築技術にはつぎのような問題点が存
在する。 (イ)第8図に示すように大径の外管aは、屈曲して布
設されることが多い。 また、外管aと内管すとの周面間の間隙は、施工コスト
の関係から作業者の進入をまった(許さないほどに小さ
く設計しである。 そのため、内管すの位置決め作業、芯出し作業、挿入作
業、接続作業、固定作業などの各作業に多くの時間と労
力を要し、施工性が極めて悪い。 特に、内管b1の後部に別途の内管b2を押し込んで接
続する作業は人力に頼っているため、内管b2の芯出し
を正確に行って接続する作業は至難のわざである。 (ロ)上記したように外管aは屈曲していることが多い
から、外管aと内管すの周面間の対向距離は場所により
異なる。 したがって、外管aと内管すの周面間に介在する内管固
定用の支持部材Cは、現場の寸法に応じて切断して製作
している。 そのため、支持部材Cの製作や設置に多(の手数がかか
り面倒である。 く本発明の目的〉 本発明は前記問題点を解決するために成されたもので、
内管の芯出作業や接続作業に手数がかからず、施工性に
優れた、二重管の施工法を提供することを目的とする。 〈本発明の構成〉 以下、図面を参照しながら本発明の一実施例について説
明する。 まず、本発明の施工に使用する主要な機材について説明
する。 くイ〉芯出装置 第1図に芯出装置1の一例を示す。 図中、11.12は複数の反カサボートであり、13は
芯出用アームであり、14は牽引ロッドである。 15は両反カサポート11,12の下部間を連結するベ
ースフレームであり、16はベースフレーム15に取り
付けたばね付きの走行輪である。 芯出装置1は、既設の内管B内に位置して、後続予定の
内管Bを所定の高さまで持ち上げて芯出しをする専用装
置である。 以下、芯出装置1の各部について説明する。
<Industrial Application Field> The present invention relates to a method for constructing double pipes. <Prior Art> As a countermeasure against water leakage in water and sewage pipes, it is known to construct a double pipe by inserting a separate inner pipe such as a Huum pipe into an outer pipe that has been previously constructed. This laying method is generally performed in the following steps. (1) Build the outer tube. (2) Lower the inner pipe into the shaft. (3) Place the suspended inner pipe on a trolley and transport it into the outer pipe. (4) While adjusting the level of the inner tube, sequentially connect and extend the inner tube to the outer tube. (5) A filling material such as mortar is filled between the circumferential surfaces of the outer tube and the inner tube for waterproofing. Problems to be Solved by the Present Invention> The double pipe construction technique described above has the following problems. (a) As shown in FIG. 8, the large diameter outer tube a is often laid in a bent manner. In addition, the gap between the circumferential surfaces of the outer pipe a and the inner pipe is designed to be so small as to prevent workers from entering due to construction costs. Therefore, the positioning work of the inner pipe Each work such as centering work, insertion work, connection work, and fixing work requires a lot of time and effort, and the workability is extremely poor.In particular, connecting by pushing a separate inner pipe b2 into the rear part of the inner pipe b1. Since the work relies on manual labor, it is extremely difficult to accurately center and connect the inner tube b2. (b) As mentioned above, the outer tube a is often bent. The facing distance between the circumferential surfaces of the outer tube a and the inner tube varies depending on the location. Therefore, the supporting member C for fixing the inner tube interposed between the circumferential surfaces of the outer tube a and the inner tube depends on the dimensions of the site. Therefore, the manufacturing and installation of the support member C takes a lot of effort and is troublesome.Objective of the present invention> The present invention has been made to solve the above-mentioned problems. in,
The purpose of the present invention is to provide a double pipe construction method that does not require much labor for centering or connecting inner pipes and has excellent workability. <Configuration of the Present Invention> An embodiment of the present invention will be described below with reference to the drawings. First, the main equipment used in the construction of the present invention will be explained. 1) Centering device FIG. 1 shows an example of the centering device 1. In the figure, 11 and 12 are a plurality of anti-cover boats, 13 is a centering arm, and 14 is a towing rod. 15 is a base frame that connects the lower parts of the opposite support supports 11 and 12, and 16 is a running wheel with a spring attached to the base frame 15. The centering device 1 is a dedicated device that is located inside the existing inner tube B and lifts and centers the inner tube B that is scheduled to follow to a predetermined height. Each part of the centering device 1 will be explained below.

【反力サポート] 反力サポート11.12は、伸縮機能と走行機能を有す
るサポート材である。 本実施例では反力サポート11.12をねじ式に構成し
て伸縮機能を持たせる場合について説明するが、油圧式
に構成することも可能である。 各反力サポート11.12の両端面には、摩擦係数の大
きいゴム幕を貼着しておく。 【芯出用アーム】 一方の反力サポート12の上部には芯出用アーム13の
途上を軸支し、また芯出用アーム13の基端は他方の反
力サポート11側に設けたアーム昇降用ねじ17に螺合
し、このアーム昇降用ねじ17を回動操作することによ
り、芯出用アーム13の自由端部が反力サポート12と
の軸支点を支点として上下、左右などの全方向に揺動す
るよう構成しである。 この芯出用アーム13の自由端側には、高低調整ねじ1
8が設けられている。 高低調整ねじ18の上端面には、摩擦係数の小さいフィ
ルト基が貼着しである。 したがって、芯出用アーム13は、アーム昇降用ねじ1
7の螺合部を力点とし、反力サポート12との軸支点を
支点とし、高低調整ねじ18を作用点とする、てこを形
成することになる。 く口〉管固定金具 管固定金具2は、外管Aと内管Bの周面間に介在するた
めの、伸縮機能を有する支持部材である。 具体的には、第3図に示すように二つのU型金具21と
ナツト22および支持ボルト23からなり、各U型金具
21の屈曲面に支持ボルト23の両端部を貫通し、支持
ボルト23を回動操作することにより、二つのU型金具
21間の距離を調節できる構造となっている。 くハ〉台車(第1.4図) 台車3は前輪31および後輪32を有する内管Bの専用
運搬車であるが、特に、後輪32側に昇降架台33を設
けて、登載する内管Bの後部を持ち上げられるよう構成
しである。 すなわち、台車3の後部本体に、調節ナツト34を螺着
したリフト用ボルト35を貫入し、調整ナツト34の回
動操作により、台車3の後部に位置する昇降架台33を
昇降可能に構成する。 つぎに施工方法について説明する。(第1図、第5〜7
図) く1〉外管の構築 発進立坑6と到達立坑7の間に外管Aを布設する。 外管Aの布設は、公知のシールド工法などにより行う。 く2〉内管の吊り降ろし つぎに、発進立坑6内に、布設予定の内管B1を吊り降
ろす。 く3〉内管の運搬 吊り降ろした内管B1を前記台車3に登載して、外管A
内を走行路として到達立坑7側まで運搬する。 そして、内管B1の前部と後部の各周面と外管Aとの周
面間に、管固定用金具2を介在して、最初の内管B1を
宙に浮かせた状態で布設する。 (4〉芯出装置の設置 つづいて、この内管B1内の後部側に、各反力サポート
11.12の両端を内管Blの内壁に押し付けて芯出装
置1を設置する。 芯出装置1は、反力サポート12を管固定用金具2の延
長線上に一致させて設置する。 このとき、内管B1の後Mi(発進立坑6側)から、芯
出用アーム13の自由端を突出させておく。 く5〉内管の接続、延長 発進立坑6内に吊り降ろした別途の内管B ’2を台車
3を使って既設の内管B1の位置まで運搬する。 内管B2を既設の内管B1に接続するわけであるが、既
設の内管B1に対し、接続予定の内管B2の軸芯が下が
っていることが多い。 そこで、接続予定の内管B2の軸芯を既設の内管B1に
一致させて接続するために、っぎの操作を行う。 [芯出用アームの挿入] 内管B2をゆっくりと内管B1の後端へ近付けて、芯出
用アーム13の自由端を下げて内管B2内に挿入する。 [内管前部の上昇1 つづいて、アーム昇降用ねじ17を回動操作して、芯出
用アーム13の自由端を上昇する。 内管B2は、その前部が高低調整ねじ18および芯出用
アーム13を介して内管B1の軸芯とほぼ一致する高さ
まで持ち上げる。 E内管後部の上昇] つぎに台車3の昇降架台33を上昇させて、内管B2の
後部を持ち上げる。 [内管の接続1 内管B2の後端に鋼棒などの横断材8を横渡しして配置
し、この鋼棒と芯出装置1の牽引ロッド14の間をロー
プ材4で連絡する。 そして、牽引ロッド14を回動操作してロープ材4を引
き寄せ、内管B2を既設の内管B1側へ引き寄せる。 内管B2は高低調整ねじ13の頂面上を滑動しながら内
管B2の後部に接続される。 この引き寄せ作業に際し、芯出用アーム13を上下左右
の各方向に微調整しながら山内管B1、B2の軸芯を正
確に一致させて接続する。 〈6ン管の固定 内管B2の後部と外管Aの周面間には、この周面間の距
離に応じて長さを調整した管固定金具2を介在して内管
B2を固定する。 したがって、内管B2の前部は既設の内管B1に支持さ
れ、内管B2の後部は管固定金具2により固定されるこ
とになる。 内管B2を外管A内に仮固定したら、昇降架台33を降
下して台車3を後退させ、つぎの接続予定の内管Bの搬
入に供する。 く7〉芯出装置の移動 芯出用アーム13の自由端を下げて内管B2から引き離
し、同時に両反カサポート11.12を収縮する。 両内管Bl、B2の内面との接触を断った状態で芯出装
置1を内管B2の後部まで走行して移動する。 なお、内管B2の後部から芯出用アーム13を突出させ
ておくことは、内管B1の場合と同様である。 以上の工程を繰り返して、以下順次内管B3・・・を接
続して二重管を延長して構築する。 く7〉充填材の注入 内管B1、B2・・・と外管Aの周面間には、モルタル
などの充填材5を注入する。 固定用金具2は充填材5内に埋め殺す。 充填材5の充填方法としては、山内外管B1Aの周面間
に充填ホースを挿入し、この充填ホースを引き戻しなが
ら充填材5を充填したり、あるいは内管Bの接続作業の
途中で充填区間を区切って充填する方法を採用すること
もできる。 く本発明の効果〉 本発明は以上説明したようになるから、つぎの効果を得
ることができる。 (イ)内管の位置決め、芯出し、接続などの作業が容易
であるから、外管内に布設する内管の施工性が極めて良
好である。 (ロ)内管の芯出し作業は、各方向に揺動可能な芯出用
アームや、昇降機能を有する台車などによって機械的に
操作して行える。 したがって、従来のように内管の芯出し作業を人力に頼
らずに極めて正確に行える。 しかも外管と内管との周面間の空間の拡狭に影響を受け
ず、効率良く行える。
[Reaction Force Support] The reaction force supports 11 and 12 are support materials that have an elastic function and a running function. In this embodiment, a case will be described in which the reaction force supports 11 and 12 are configured in a screw type manner to have a telescopic function, but it is also possible to configure them in a hydraulic type. Rubber curtains with a large coefficient of friction are pasted on both end faces of each reaction force support 11, 12. [Centering arm] The centering arm 13 is pivoted on the upper part of one reaction force support 12, and the base end of the centering arm 13 is attached to the other side of the reaction force support 11. By screwing into the arm lifting screw 17 and rotating the arm lifting screw 17, the free end of the centering arm 13 can be rotated in all directions, such as up and down, left and right, about the fulcrum of the reaction force support 12. It is configured to swing. A height adjustment screw 1 is provided on the free end side of this centering arm 13.
8 is provided. A filtration group having a small coefficient of friction is attached to the upper end surface of the height adjustment screw 18. Therefore, the centering arm 13 is connected to the arm lifting screw 1.
A lever is formed in which the threaded portion of 7 is the point of effort, the pivot point with the reaction force support 12 is the fulcrum, and the height adjustment screw 18 is the point of action. Exit> Pipe fixing metal fitting The tube fixing metal fitting 2 is a support member that is interposed between the circumferential surfaces of the outer tube A and the inner tube B and has a telescopic function. Specifically, as shown in FIG. 3, it consists of two U-shaped metal fittings 21, a nut 22, and a support bolt 23, and both ends of the support bolt 23 are passed through the bent surface of each U-shaped metal fitting 21. The structure is such that the distance between the two U-shaped fittings 21 can be adjusted by rotating the two U-shaped fittings 21. Bogie (Fig. 1.4) The bogie 3 is a dedicated transport vehicle for the inner pipe B, which has front wheels 31 and rear wheels 32. In particular, an elevating frame 33 is provided on the rear wheel 32 side to facilitate loading and unloading. The structure is such that the rear part of tube B can be lifted up. That is, a lift bolt 35 having an adjustment nut 34 screwed thereon is inserted into the rear body of the truck 3, and by rotating the adjustment nut 34, the elevating frame 33 located at the rear of the truck 3 can be raised and lowered. Next, the construction method will be explained. (Figure 1, 5-7
Figure) 1> Construction of the outer pipe Lay the outer pipe A between the starting shaft 6 and the reaching shaft 7. The outer pipe A is laid by a known shield construction method. 2> Hanging down the inner pipe Next, the inner pipe B1 to be laid is lowered into the starting shaft 6. 3> Transporting the inner pipe Load the lowered inner pipe B1 on the trolley 3, and transport the outer pipe A.
The inside is used as a running route for transport to the reaching shaft 7 side. Then, a tube fixing fitting 2 is interposed between the front and rear peripheral surfaces of the inner tube B1 and the outer tube A, and the first inner tube B1 is laid in a suspended state. (4> Installation of centering device Continuing, install centering device 1 on the rear side of inner tube B1 by pressing both ends of each reaction force support 11, 12 against the inner wall of inner tube Bl. Centering device 1 is installed so that the reaction force support 12 is aligned with the extension line of the pipe fixing fitting 2. At this time, the free end of the centering arm 13 is protruded from the rear Mi (starting shaft 6 side) of the inner pipe B1. 5> Connecting the inner pipe, extend the separate inner pipe B'2 suspended into the starting shaft 6 and transporting it to the position of the existing inner pipe B1 using the trolley 3. However, the axis of the inner pipe B2 to be connected is often lower than the existing inner pipe B1.Therefore, the axis of the inner pipe B2 to be connected is In order to match and connect the inner tube B1 with the inner tube B1, perform the following operation. Lower the end and insert it into the inner tube B2. [Raising the front part of the inner tube 1] Next, turn the arm raising/lowering screw 17 to raise the free end of the centering arm 13. Inner tube B2 is raised to a height where its front part almost coincides with the axis of the inner tube B1 via the height adjustment screw 18 and the centering arm 13. [Inner pipe connection 1] A cross member 8 such as a steel rod is placed across the rear end of the inner pipe B2, and this steel rod and the pulling rod of the centering device 1 are connected to each other. 14 are connected by a rope material 4. Then, the pulling rod 14 is rotated to pull the rope material 4, and the inner tube B2 is pulled toward the existing inner tube B1 side. It is connected to the rear part of the inner tube B2 while sliding on the top surface. During this pulling operation, the axes of the Yamauchi tubes B1 and B2 are precisely aligned while finely adjusting the centering arm 13 in each direction, up, down, left, and right. <A pipe fixing fitting 2 whose length is adjusted according to the distance between these circumferential surfaces is interposed between the rear part of the fixed inner tube B2 of the 6-inch tube and the outer circumferential surface of the outer tube A, and the inner tube is connected. Fix the pipe B2. Therefore, the front part of the inner pipe B2 is supported by the existing inner pipe B1, and the rear part of the inner pipe B2 is fixed by the pipe fixing fitting 2. The inner pipe B2 is fixed inside the outer pipe A. Once temporarily fixed, the lift platform 33 is lowered and the trolley 3 is moved backwards to transport the next inner pipe B to be connected.7> Lower the free end of the moving centering arm 13 of the centering device It is pulled away from the inner tube B2, and at the same time, the opposite force supports 11 and 12 are contracted.With both the inner tubes Bl and the inner surface of B2 cut off, the centering device 1 is moved to the rear of the inner tube B2. . Note that the centering arm 13 is made to protrude from the rear part of the inner tube B2, as in the case of the inner tube B1. By repeating the above steps, the inner pipes B3... are successively connected to extend and construct the double pipe. 7> Injection of filler A filler 5 such as mortar is injected between the circumferential surfaces of the inner tubes B1, B2, . . . and the outer tube A. The fixing fitting 2 is buried in the filling material 5. The filling method for filling the filler 5 is to insert a filling hose between the circumferential surfaces of the inner and outer tubes B1A and fill the filler 5 while pulling back the filling hose, or to fill the filling section during the connection work of the inner tube B. It is also possible to adopt a method of separating and filling. Effects of the Present Invention> Since the present invention is as described above, the following effects can be obtained. (a) Since the work of positioning, centering, and connecting the inner pipe is easy, the workability of the inner pipe laid inside the outer pipe is extremely good. (b) Centering of the inner tube can be performed mechanically using a centering arm that can swing in each direction, a cart that has a lifting function, and the like. Therefore, the centering work of the inner tube can be performed extremely accurately without relying on human power as in the past. Furthermore, this can be carried out efficiently without being affected by the expansion or narrowing of the space between the circumferential surfaces of the outer tube and the inner tube.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図二本発明の一実施例の説明図 第2図:芯出装置の斜視説明図 第3図:管固定金具の説明図 第4図:台車の後部の説明図 第5図:内管の接続時の説明図 第6図:施工を完了したときの説明図 第7図:第6図の■−■の断面図 第8図:従来技術の説明図 Fig. 1 2 An explanatory diagram of an embodiment of the present invention Figure 2: Perspective explanatory diagram of centering device Figure 3: Explanation diagram of pipe fixing fittings Figure 4: Explanatory diagram of the rear part of the trolley Figure 5: Explanatory diagram when connecting the inner pipe Figure 6: Explanatory diagram when construction is completed Figure 7: Cross-sectional view of ■-■ in Figure 6 Figure 8: Illustration of conventional technology

Claims (1)

【特許請求の範囲】 外管の一方から外管より小径の内管を接続しながら布設
して二重管を形成し、前記外管と内管の周面間に充填材
を充填して行う二重管の施工法において、 先行して布設した内管内の後部側に、 揺動可能なアームを有する芯出装置を設置し、前記アー
ムを先行して布設した内管の後端から突出させ、 後続予定の内管内にアームの自由端を挿入し、アームの
揺動操作による後続予定の内管の前部の高さ調整と、 後続予定の内管の後部の高さ調整をして内管を接続して
行うことを特徴とする、 二重管の施工法。
[Scope of Claims] A double pipe is formed by connecting and installing an inner pipe having a smaller diameter than the outer pipe from one side of the outer pipe, and filling a filler between the peripheral surfaces of the outer pipe and the inner pipe. In the double pipe construction method, a centering device with a swingable arm is installed on the rear side of the inner pipe that has been laid in advance, and the arm is made to protrude from the rear end of the inner pipe that has been laid in advance. , Insert the free end of the arm into the inner pipe scheduled to follow, and adjust the height of the front part of the inner pipe scheduled to follow by swinging the arm, and adjust the height of the rear part of the inner pipe scheduled to follow. A double pipe construction method characterized by connecting pipes.
JP62029771A 1987-02-13 1987-02-13 Double pipe construction method Expired - Lifetime JP2566400B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62029771A JP2566400B2 (en) 1987-02-13 1987-02-13 Double pipe construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62029771A JP2566400B2 (en) 1987-02-13 1987-02-13 Double pipe construction method

Publications (2)

Publication Number Publication Date
JPS63199987A true JPS63199987A (en) 1988-08-18
JP2566400B2 JP2566400B2 (en) 1996-12-25

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JP62029771A Expired - Lifetime JP2566400B2 (en) 1987-02-13 1987-02-13 Double pipe construction method

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JP (1) JP2566400B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5876337B2 (en) * 2012-03-15 2016-03-02 大成建設株式会社 How to install running water tunnel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS503982U (en) * 1973-05-16 1975-01-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS503982U (en) * 1973-05-16 1975-01-16

Also Published As

Publication number Publication date
JP2566400B2 (en) 1996-12-25

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