JPH0742495A - Centrifugal forming tunnel liner manufacturing method - Google Patents
Centrifugal forming tunnel liner manufacturing methodInfo
- Publication number
- JPH0742495A JPH0742495A JP5190256A JP19025693A JPH0742495A JP H0742495 A JPH0742495 A JP H0742495A JP 5190256 A JP5190256 A JP 5190256A JP 19025693 A JP19025693 A JP 19025693A JP H0742495 A JPH0742495 A JP H0742495A
- Authority
- JP
- Japan
- Prior art keywords
- tunnel liner
- concrete
- centrifugal molding
- mold
- molding drum
- 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
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
(57)【要約】
【目的】製造すべきトンネルライナの外径より小径の遠
心成形ドラムを用いて大きい外径のトンネルライナを製
造する。
【構成】遠心成形ドラム内に円弧状に分割した大径のト
ンネルライナの型枠を装着し、コンクリートを打設して
遠心成形し、コンクリート締固め後、型枠を遠心成形ド
ラムから取り外し、打設コンクリートのトンネルライナ
内径側の余肉を除去する。
(57) [Summary] [Purpose] To manufacture a tunnel liner with a large outer diameter by using a centrifugal molding drum with a diameter smaller than the outer diameter of the tunnel liner to be manufactured. [Structure] A large-diameter tunnel liner mold divided into arcs is mounted in the centrifugal molding drum, concrete is poured into the mold for centrifugal molding, and after compacting the concrete, the mold is removed from the centrifugal molding drum Remove the excess thickness on the inner diameter side of the tunnel liner of the installed concrete.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、シールド工法や推進工
法に用いられるコンクリート製の遠心成形トンネルライ
ナの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a concrete centrifugally formed tunnel liner used in a shield construction method and a propulsion construction method.
【０００２】[0002]
【従来の技術】本発明者らは、トンネルライナを適切な
大きさの円弧状製品に分割し、遠心成形によって製造す
る技術を開示している。従来このようなトンネルライナ
の製造方法では、遠心成形ドラム内に同心円状にコンク
リート型枠を配置し、ほぼ均一な肉厚のコンクリートラ
イナを製造している。このような場合、製造しようとす
るトンネルライナの外径より大きい内径を有する遠心成
形ドラムが必ず必要であった。遠心成形ドラムの径が大
きくなると遠心成形時にコンクリートの垂れが生ずる。
従って、従来、遠心成形によって製造できるトンネルラ
イナの製造可能な内径には上限があった。The present inventors have disclosed a technique of dividing a tunnel liner into arc-shaped products of appropriate sizes and manufacturing them by centrifugal molding. Conventionally, in such a tunnel liner manufacturing method, a concrete formwork is arranged concentrically in a centrifugal molding drum to manufacture a concrete liner having a substantially uniform wall thickness. In such a case, a centrifugal molding drum having an inner diameter larger than the outer diameter of the tunnel liner to be manufactured was inevitably required. If the diameter of the centrifugal molding drum becomes large, concrete drips during centrifugal molding.
Therefore, conventionally, there is an upper limit on the manufacturable inner diameter of the tunnel liner that can be manufactured by centrifugal molding.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上記問題点
を解決して、大径のトンネルライナを製造することを可
能にするもので、製造すべきトンネルライナの外径より
小径の遠心成形ドラムを用いて大きい外径のトンネルラ
イナを製造する技術を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention solves the above problems and makes it possible to manufacture a large-diameter tunnel liner. Centrifugal molding having a smaller diameter than the outer diameter of the tunnel liner to be manufactured. An object of the present invention is to provide a technique for manufacturing a large-diameter tunnel liner using a drum.
【０００４】本発明は、同一の遠心成形ドラムを用い
て、複数種類の直径を有するトンネルライナを製造する
ことができる技術、特に遠心成形ドラムの内径より大き
い外径を有するトンネルライナを製造することができる
技術を提供するものである。The present invention relates to a technique capable of manufacturing a tunnel liner having a plurality of kinds of diameters using the same centrifugal molding drum, and in particular, manufacturing a tunnel liner having an outer diameter larger than the inner diameter of the centrifugal molding drum. It provides a technology that can.
【０００５】[0005]
【課題を解決するための手段】本発明は、製造すべきト
ンネルライナの外径より小径の遠心成形ドラム内に、円
弧状に分割したトンネルライナの型枠を装着し、該型枠
内にコンクリートを打設して遠心成形し、コンクリート
締め固め後、前記型枠を遠心成形ドラムから取り外し、
打設コンクリートのトンネルライナ内径側の余肉を除去
することを特徴とする遠心成形トンネルライナの製造方
法である。According to the present invention, an arc-divided form of a tunnel liner is mounted in a centrifugal molding drum having a diameter smaller than the outer diameter of a tunnel liner to be manufactured, and concrete is formed in the form. After casting and centrifuging, after compacting the concrete, remove the mold from the centrifuge forming drum,
A method for manufacturing a centrifugally formed tunnel liner, which is characterized in that a surplus thickness of the cast concrete on the inner diameter side of the tunnel liner is removed.
【０００６】[0006]
【作用】本発明では、遠心成形ドラム内に、このドラム
の半径より大きい半径をもつ、別体の型枠を取付ける。
この型枠内にコンクリートを打設し、遠心力を付与して
締め固めを行うと、型枠底板の半径を外径とし、ドラム
中心からの半径を内径とする肉厚が不均等なコンクリー
トができる。このコンクリートが未だ固まらないうち
に、型枠と共に遠心成形ドラムから外に取り出し、コン
クリートの内径側の余肉を削り取ることによって、大径
のトンネルライナを製造する。In the present invention, a separate mold having a radius larger than the radius of the drum is mounted in the centrifugal molding drum.
When concrete is placed in this formwork and centrifugal force is applied to compact it, the radius of the formwork bottom plate is the outer diameter, and the radius from the center of the drum is the inner diameter. it can. Before the concrete is still set, it is taken out from the centrifugal molding drum together with the form, and the excess thickness on the inner diameter side of the concrete is scraped off to manufacture a large-diameter tunnel liner.
【０００７】トンネルライナの型枠を遠心成形ドラムか
ら取り出してコンクリートを加工するので、加工が容易
で正確である。また、遠心成形ドラムに別の型枠を取付
けて次の製品の遠心成形を行うことができるので、トン
ネルライナの高能率製造が可能である。未だ固まらない
コンクリートを削り取ることは容易にできる。遠心成形
では、内径側に欠陥を生じることがあるので、内径側の
余肉を除去することは、好ましいことである。Since the form of the tunnel liner is taken out from the centrifugal molding drum and the concrete is processed, the processing is easy and accurate. Further, since another mold can be attached to the centrifugal molding drum to centrifugally mold the next product, it is possible to manufacture the tunnel liner with high efficiency. It is easy to scrape off concrete that has not solidified yet. In centrifugal molding, defects may occur on the inner diameter side, so it is preferable to remove the excess thickness on the inner diameter side.
【０００８】本発明方法によれば、同一の遠心成形ドラ
ムを用いて、複数種類の直径をもつトンネルライナを製
造することができ、設備費の節減効果が大きい。According to the method of the present invention, it is possible to manufacture tunnel liners having a plurality of different diameters using the same centrifugal molding drum, resulting in a large effect of reducing equipment costs.
【０００９】[0009]
【実施例】以下図面を参照して本発明の実施例を説明す
る。図１は本発明のトンネルライナの製造に用いる遠心
成形ドラムの説明図、図２は余肉除去工程の説明図であ
る。内径２Ｒ1 ＝３ｍの遠心成形ドラム２内に、外径２
Ｒ10＝４ｍの平板円弧状のトンネルライナの型枠１ａ、
１ｂ、１ｃを補強板１３、取付け金具１４を介して取付
けた。型枠は、底板１１、側板１２からなり、その上面
は内径２Ｒ11である。この型枠上面１５に補助型枠２１
を載せた。補助型枠２１は、型枠１ａの上面１５に一致
し、この上面１５に隙間なく密着する枠体である。型枠
１ａ内にコンクリートを打設しながら、遠心成形ドラム
２を回転すると、型枠１ａ内には、底板１１の面を外径
面とし、ドラム２の中心から同一の半径Ｒ2 の上面１６
を有するコンクリート成形物を得る。このコンクリート
成形物を、遠心締め固め完了時点で、型枠１ａと共に遠
心成形ドラム２から取り外す。遠心成形ドラム２から取
り外した型枠１ａは、図２に示すように、架台３１上に
載せる。ついで、補助型枠２１を上方に取り去る。型枠
１ａの型枠上面１５に添ってスクレーパ、回転切削刃
物、ワイヤブラシ等により、余肉部１７を削り取って除
去する。この時、コンクリートは締固め後、未だ固まら
ない状態であるから、余肉部１７の除去は容易である。
その後、通常の工程に従ってコンクリート養生、脱型を
行って製品トンネルライナを得る。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram of a centrifugal molding drum used for manufacturing the tunnel liner of the present invention, and FIG. 2 is an explanatory diagram of a surplus thickness removing step. Inside the centrifugal molding drum 2 with an inner diameter 2R 1 = 3m, the outer diameter 2
Form 1a of a tunnel liner in the shape of a flat plate arc with R 10 = 4 m,
1b and 1c were attached via a reinforcing plate 13 and a mounting member 14. The formwork is composed of a bottom plate 11 and a side plate 12, and its upper surface has an inner diameter 2R 11 . The auxiliary mold 21 is attached to the upper surface 15 of the mold.
Posted. The auxiliary mold 21 is a frame that matches the upper surface 15 of the mold 1a and is in close contact with the upper surface 15 without a gap. When the centrifugal molding drum 2 is rotated while pouring concrete into the mold 1a, the surface of the bottom plate 11 serves as the outer diameter surface in the mold 1a, and the upper surface 16 having the same radius R 2 from the center of the drum 2 is formed.
A concrete molded product having When the centrifugal compaction is completed, this concrete molded product is removed from the centrifugal molding drum 2 together with the mold 1a. The mold 1a removed from the centrifugal molding drum 2 is placed on the frame 31, as shown in FIG. Then, the auxiliary formwork 21 is removed upward. The surplus portion 17 is scraped off by a scraper, a rotary cutting tool, a wire brush or the like along the upper surface 15 of the mold 1a. At this time, since the concrete is not yet hardened after compaction, the excess thickness portion 17 can be easily removed.
Then, concrete curing and demolding are performed according to the usual process to obtain a product tunnel liner.
【００１０】実施例の製造方法によれば、外面が密実で
内面が削り取られた良質のコンクリートからなる大径の
トンネルライナを小径の遠心成形ドラムを用いて容易に
製造することができる。According to the manufacturing method of the embodiment, a large-diameter tunnel liner made of high-quality concrete whose outer surface is solid and whose inner surface is shaved can be easily manufactured by using a small-diameter centrifugal molding drum.
【００１１】[0011]
【発明の効果】本発明によれば、遠心成形ドラムの内径
より外径が大きい円弧状のトンネルライナを容易に製造
することができる。また、遠心成形ドラムは、遠心成形
を次々に行うことができ、高能率生産が可能である。According to the present invention, an arcuate tunnel liner having an outer diameter larger than the inner diameter of the centrifugal molding drum can be easily manufactured. In addition, the centrifugal molding drum can perform centrifugal molding one after another, which enables highly efficient production.
【図１】実施例のトンネルライナの横断面図である。FIG. 1 is a cross-sectional view of a tunnel liner according to an embodiment.
【図２】実施例のトンネルライナの余肉除去工程の説明
図である。FIG. 2 is an explanatory diagram of an excess thickness removing step of the tunnel liner according to the embodiment.
１ａ、１ｂ、１ｃ 型枠 ２ 遠心成形ド
ラム １１ 底板 １２ 側板 １３ 補強板 １４ 取付け部 １５ 型枠上面 １６ 打設コン
クリート上面 １７ 余肉部 ２１ 補助型枠 ２２ 側板1a, 1b, 1c Formwork 2 Centrifugal forming drum 11 Bottom plate 12 Side plate 13 Reinforcing plate 14 Mounting part 15 Formwork upper surface 16 Casting concrete upper surface 17 Extra thickness part 21 Auxiliary formwork 22 Side plate
Claims (1)
径の遠心成形ドラム内に、円弧状に分割したトンネルラ
イナの型枠を装着し、該型枠内にコンクリートを打設し
て遠心成形し、コンクリート締め固め後前記型枠を遠心
成形ドラムから取り外し、打設コンクリートのトンネル
ライナ内径側の余肉を除去することを特徴とする遠心成
形トンネルライナの製造方法。1. A centrifugal liner mold having a diameter smaller than the outer diameter of a tunnel liner to be manufactured is mounted with an arcuately divided tunnel liner frame, and concrete is cast into the frame to centrifugally mold it. A method for manufacturing a centrifugally formed tunnel liner, which comprises removing the formwork from a centrifugal forming drum after compaction of concrete, and removing a surplus thickness of the cast concrete on the inner diameter side of the tunnel liner.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5190256A JP2602402B2 (en) | 1993-07-30 | 1993-07-30 | Manufacturing method of centrifugally formed tunnel liner |
| KR1019940009691A KR100214113B1 (en) | 1993-05-11 | 1994-05-03 | Manufacture of tunnel liner and apparatus for the same |
| US08/239,877 US5611979A (en) | 1993-05-11 | 1994-05-09 | Fabrication method for a funnel liner |
| SG1995000798A SG45107A1 (en) | 1993-05-11 | 1994-05-10 | Tunnel liner its fabrication method and its fabrication apparatus |
| EP94107279A EP0624714A3 (en) | 1993-05-11 | 1994-05-10 | Formwork panel, its manufacturing method and manufacturing apparatus. |
| CN94106973A CN1065585C (en) | 1993-05-11 | 1994-05-11 | Tunnel liner, its fabrication method, and its fabrication apparatus |
| TW083105041A TW247289B (en) | 1993-05-11 | 1994-06-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5190256A JP2602402B2 (en) | 1993-07-30 | 1993-07-30 | Manufacturing method of centrifugally formed tunnel liner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0742495A true JPH0742495A (en) | 1995-02-10 |
| JP2602402B2 JP2602402B2 (en) | 1997-04-23 |
Family
ID=16255116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5190256A Expired - Fee Related JP2602402B2 (en) | 1993-05-11 | 1993-07-30 | Manufacturing method of centrifugally formed tunnel liner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2602402B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300589A (en) * | 2019-12-20 | 2020-06-19 | 常州机电职业技术学院 | A saddle plate curved surface vibration forming device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60236705A (en) * | 1984-04-20 | 1985-11-25 | 久保田コンクリ−ト工業株式会社 | Manufacture of concrete segment for constructing tunnel |
-
1993
- 1993-07-30 JP JP5190256A patent/JP2602402B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60236705A (en) * | 1984-04-20 | 1985-11-25 | 久保田コンクリ−ト工業株式会社 | Manufacture of concrete segment for constructing tunnel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300589A (en) * | 2019-12-20 | 2020-06-19 | 常州机电职业技术学院 | A saddle plate curved surface vibration forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2602402B2 (en) | 1997-04-23 |
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Legal Events
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Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19961203 |
|
| R250 | Receipt of annual fees |
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| LAPS | Cancellation because of no payment of annual fees |