JPH02171494A - Inner form device for directly placed concrete lining method - Google Patents

Inner form device for directly placed concrete lining method

Info

Publication number
JPH02171494A
JPH02171494A JP63325613A JP32561388A JPH02171494A JP H02171494 A JPH02171494 A JP H02171494A JP 63325613 A JP63325613 A JP 63325613A JP 32561388 A JP32561388 A JP 32561388A JP H02171494 A JPH02171494 A JP H02171494A
Authority
JP
Japan
Prior art keywords
form body
bottom plate
movable bottom
fresh concrete
inner form
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
JP63325613A
Other languages
Japanese (ja)
Other versions
JPH0631550B2 (en
Inventor
Sumio Shiyougu
正化 澄夫
Shunji Takaoka
高岡 俊司
Akiyoshi Sato
彰祐 佐藤
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.)
OOMOTOGUMI KK
Original Assignee
OOMOTOGUMI KK
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 OOMOTOGUMI KK filed Critical OOMOTOGUMI KK
Priority to JP63325613A priority Critical patent/JPH0631550B2/en
Publication of JPH02171494A publication Critical patent/JPH02171494A/en
Publication of JPH0631550B2 publication Critical patent/JPH0631550B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/10Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
    • E21D11/102Removable shuttering; Bearing or supporting devices therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

PURPOSE:To make improvements in workability by installing a restoring deformation adjustable part which operates so as to partition off a recess in a circumferential proper spacing spot on the circumferential surface of an inner form body, and also installing a fresh concrete flow port in this recess. CONSTITUTION:In this device, there is provided with a restoring deformation adjustable part 17 which operates so as to partition off a recess 16 in a circumferential proper spacing spot on the outer circumferential surface of an inner form body 14. Next, this adjustable part 17 is made up of a movable bottom plate 17a forming a part of the outer circumferential surface of the form body 14 and a peripheral wall 17b guiding this bottom plate 17a free of slide motion, and the movable bottom plate 17a is driven in the radial direction of the form body 14 by operation of a jack 19, thus restoring deformation takes place. At this time, fresh concrete fed to the inside of the recess 16 from a fresh concrete flow port 22 is extruded in the radial direction of the form body 14 for pressurization. With this constitution, chargeability of concrete is thus improvable.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、シールドトンネルを構築するさいに使用され
る直か打ちコンクリートライニング工法(E、C,L工
法)用内型枠装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an inner formwork device for direct cast concrete lining methods (E, C, L methods) used when constructing shield tunnels.

(従来の技術) 近年、シールドトンネルを構築する方法としてE、 C
,L工法が注目を集めているが、その概略は第4図に示
すようにシールド機lの一部をなすテールプレー)la
内で組み立てた型枠を覆工の内型枠2としてフレッシュ
コンクリート3を打設し、次いでシールドジヤツキ4の
推力を内型枠2に加えると同時にプレスジヤツキ5の推
力を打設直後のまだ固まらないコンクリート3に加え、
逐次形成されるテールボイド6にフレッシュコンクリー
トを充填させながら、シールド機1の推進に応じてその
背後に覆工コンクリートライニングを構築するようにな
す。
(Prior art) In recent years, E and C have been used as methods for constructing shield tunnels.
,L construction method is attracting attention, but its outline is as shown in Figure 4, which is a tail play (a part of a shield machine).
Fresh concrete 3 is poured using the formwork assembled in the inner formwork 2 of the lining, and then the thrust of the shield jack 4 is applied to the inner formwork 2, and at the same time the thrust of the press jack 5 is applied to the concrete that is still hardened immediately after pouring. In addition to concrete 3,
While filling fresh concrete into the tail void 6 formed one after another, a concrete lining is constructed behind it as the shielding machine 1 is propelled.

なお図中、7は一体構造のプレスリング、8は地山、l
Oはフレッシュコンクリートの供給口、11は鉄筋であ
る。
In addition, in the figure, 7 is a press ring of integral structure, 8 is a ground, l
O is a fresh concrete supply port, and 11 is a reinforcing bar.

(発明が解決しようとする課題) 上記した従来の内型枠2を使用してのE、C。(Problem to be solved by the invention) E and C using the conventional inner formwork 2 described above.

L工法にあっては、プレスジヤツキ5の押圧力が一体構
造になされたプレスリング7の妻部を介してフレッシュ
コンクリート3に付与されるため、次のような問題があ
る。
In the L construction method, the pressing force of the press jack 5 is applied to the fresh concrete 3 via the end portion of the press ring 7, which has an integral structure, and therefore there are the following problems.

即ち、 イ)一体構造からなるプレスリング7がフレッシュコン
クリートの妻部全面を同程度にのみ加圧することになる
ため、内型枠2の円周方向に於ける各位置毎の最適な加
圧調整ができない。
That is, a) Since the press ring 7, which has an integral structure, applies pressure to the same extent over the entire end of the fresh concrete, it is possible to optimally adjust the pressure at each position in the circumferential direction of the inner formwork 2. I can't.

口)プレスリング7の加圧個所からテールエンドpまで
の距離が長いため、テールエンドp周辺の加圧力が損な
われる可能性が高く、この部分のコンクリート充填性に
劣る。
Since the distance from the pressing point of the press ring 7 to the tail end p is long, there is a high possibility that the pressing force around the tail end p will be lost, and the concrete filling properties of this part will be poor.

ハ)プレスジヤツキ5やプレスリング7の存在により覆
工コンクリート用の埋殺し妻型枠を装着するのが困難で
ある。
c) Due to the presence of the press jack 5 and the press ring 7, it is difficult to install the burying gable formwork for lining concrete.

二)プレスジヤツキ5でプレスしたさい鉄筋11に悪影
響があり、また軸方向鉄筋継手手段が複雑且つ不確実と
なる。
2) The reinforcing bars 11 are adversely affected when pressed by the press jack 5, and the axial reinforcing bar joint means become complicated and unreliable.

本発明は、これら問題点を一挙に解消させることを可能
とする直か打ちコンクリートライニング工法用内型枠装
置を提供することを目的とする。
An object of the present invention is to provide an inner formwork device for direct pouring concrete lining method that can solve these problems all at once.

(課題を解決するための手段) 上記目的を達成するため本発明は、筒形となしたシール
ド工法に用いられる内型枠本体の外周面で円周方向適当
間隔個所に凹みを画成するように作動する復元変形自在
部が設けてあって、この復元変形自在部は前記内型枠本
体の外周面の一部をなす可動底板とこれを摺動変位自在
に案内する周壁とで形成し、また前記可動底板は内型枠
本体の内方に備えたジヤツキで駆動される構成となすと
共に、前記内型枠本体の適所には前記凹みに連通ずるフ
レッシュコンクリート流通口が設けであるものとしであ
る。
(Means for Solving the Problems) In order to achieve the above object, the present invention provides a structure in which recesses are defined at appropriate intervals in the circumferential direction on the outer peripheral surface of a cylindrical inner form body used for shield construction method. A restoring deformable part is provided which operates, and the restoring deformable part is formed of a movable bottom plate forming a part of the outer circumferential surface of the inner form body and a peripheral wall that guides the bottom plate so as to be slidably displaceable; Further, the movable bottom plate is configured to be driven by a jack provided inside the inner form body, and a fresh concrete flow port communicating with the recess is provided at a suitable location in the inner form body. be.

(作用) 復元変形自在部は、ジヤツキの作動により内型枠本体の
半径外方向へ可動底板が駆動されることで復元変形する
。このとき、可動底板は凹み内に在るフレッシュコンク
リートを内型枠本体の半径外方向(即ちテールボイド側
)に向けて押し出し且つテールボイドを直接的に加圧す
る。
(Function) The restoratively deformable portion is restored and deformed by driving the movable bottom plate in the radially outward direction of the inner form body by the action of the jack. At this time, the movable bottom plate pushes out the fresh concrete present in the recess in a radially outward direction of the inner form body (i.e., toward the tail void side) and directly pressurizes the tail void.

また復元変形自在部は内型枠本体の円周方向に複数ある
ことから、各可動底板は内型枠本体の半径外方向に各々
異なったジヤツキ力で押圧駆動され得るものとなる。
Further, since there are a plurality of restoring deformable parts in the circumferential direction of the inner form body, each movable bottom plate can be pressed and driven in the radially outward direction of the inner form body with different jacking forces.

またコンクリート流通口は凹みにコンクリートを供給す
るための通路となったり、或いは凹みからフレッシュコ
ンクリートを排出するための通路となる。
Further, the concrete flow port serves as a passage for supplying concrete to the recess or a passage for discharging fresh concrete from the recess.

(実施例) 以下、本発明の具体的な実施例を図面に基づいて詳細に
説明する。
(Example) Hereinafter, specific examples of the present invention will be described in detail based on the drawings.

第1図は構築中のシールドトンネルを、そして第3図は
本発明の使用説明図を示し、従来と同一個所には同一符
号を付して説明を省略するものとする。
FIG. 1 shows a shield tunnel under construction, and FIG. 3 shows an explanatory view of the use of the present invention, and the same parts as in the prior art are given the same reference numerals and explanations will be omitted.

図に於いて13はシールドトンネル掘削土の排出管を兼
用せしめたエレクタレールでトンネル中央部に横架しで
ある。
In the figure, reference numeral 13 denotes an erector rail that also serves as a discharge pipe for excavated soil from the shield tunnel, and is installed horizontally in the center of the tunnel.

そして14は本発明に係る内型枠装置であり、次のよう
に構成される。
Reference numeral 14 denotes an inner formwork device according to the present invention, which is constructed as follows.

即ち、筒形の内型枠本体15が形成してあって、この内
型枠本体15の外周面であってその適当間隔個所には凹
み16を画成するように作動する復元変形自在部17を
設ける。ここでは各型枠要素15aにその復元変形自在
部17が設けてあり、各々は内型枠本体15の外周面の
一部をなす可動底板17aとこれを摺動変位自在に案内
する周壁17bとで構成している。これら可動底板17
aと周壁17bとは所謂ピストン・シリンダ機構をなす
ようなものであれば良いのであるが、ここでは出来るだ
け構造簡易になすため、可動底板17aは内型枠本体1
5の半径方向と直交した軸18を介して揺動変位自在に
装設すると共にその外端面slを円弧面と成し、また周
壁17bは可動底板17aの側面と摺接する平面S2と
前記外端面S1の回転軌跡に合致する曲面とで形成しで
ある。なお図示はしてないが可動底板17aと周壁17
bとの摺接部にシール性を向上させるための適宜なシー
ルパツキン等を設けることは自由である。
That is, a cylindrical inner form body 15 is formed, and restoring deformable portions 17 act to define recesses 16 at appropriately spaced locations on the outer peripheral surface of the inner form body 15. will be established. Here, each formwork element 15a is provided with a restoring and deformable part 17, each of which includes a movable bottom plate 17a forming a part of the outer peripheral surface of the inner formwork main body 15, and a peripheral wall 17b that guides it so as to be slidably displaceable. It consists of These movable bottom plates 17
a and the peripheral wall 17b may form a so-called piston-cylinder mechanism, but here, in order to simplify the structure as much as possible, the movable bottom plate 17a is connected to the inner form body 1.
The peripheral wall 17b has a plane S2 in sliding contact with the side surface of the movable bottom plate 17a and the outer end surface. It is formed with a curved surface that matches the rotation locus of S1. Although not shown, the movable bottom plate 17a and the peripheral wall 17
It is free to provide a suitable sealing pad or the like to improve the sealing performance at the sliding contact portion with b.

19は内型枠本体15の内方に位置させた動力駆動のジ
ヤツキで前記各復元変形自在部17の可動底板17aを
揺動駆動するためのものであり、その各々は独立駆動可
能になされている。そして、これのシリンダ基端19a
は前記移動エレクタレール13に摺動変位自在に外嵌さ
れた断面多角形の移動エレクタフレーム20の周面に連
結金具21を介して揺動変位可能に軸着する一方、ラム
19b先端は可動底板17aの裏面部に同じく揺動変位
可能に軸着しである。
Reference numeral 19 denotes a power-driven jack located inside the inner form body 15 for swinging the movable bottom plate 17a of each of the restoring and deformable parts 17, each of which can be driven independently. There is. And this cylinder base end 19a
is pivotally attached to the circumferential surface of the movable erector frame 20, which has a polygonal cross section and is slidably fitted onto the movable erector rail 13, via a connecting fitting 21, while the tip of the ram 19b is attached to a movable bottom plate. It is also pivotally attached to the back side of 17a so as to be able to swing and displace.

また22は前記凹み16にフレッシュコンクリート3を
供給・排出するための流通管で、前記可動底板17aを
貫通させるようにして装着する。
Further, 22 is a flow pipe for supplying and discharging fresh concrete 3 to and from the recess 16, and is installed so as to penetrate the movable bottom plate 17a.

次に、上記した内型枠装置14を使用してE。Next, E using the above-mentioned inner formwork device 14.

C,L工法を実施する場合の要領について説明する。The procedure for implementing C and L methods will be explained.

一つのコンクリート直か打ち区画P、、の作業を終えた
ならば、新しいコンクリート直か打ち区画P、、+1を
形成するべく、次なる鉄筋11を軸方向継手11aを介
することにより継ぎ足すと共にフレッシュコンクリート
3の固化を待つべく未だ使用状態となっている内型枠装
?t14のうちで既に取外し可能時期に達している最も
末尾のもの(例えば区画P7よりも10〜20区画後方
に位置したもの)を新しい一定区画P、l。1の位置に
移動させ、且つ埋殺し妻型枠12及び妻型枠24をも所
定B様に位置決めし、続いてシールドジヤツキ4により
前記妻型枠24を押圧するようになす。この後、内型枠
本体15に於ける復元変形自在部17の可動底板17a
を第1図に示すように内型枠本体15の半径内方向に変
位させた状態となしてフレッシュコンクリート流通管2
2等を介して前記区画P Rel内にフレッシュコンク
リート3を直か打ちし、区画P70.内を充満させる。
After completing the work on one concrete direct pouring section P,,, in order to form a new concrete direct pouring section P,,+1, the next reinforcing bar 11 is added through the axial joint 11a and fresh Is the inner formwork still in use as it waits for concrete 3 to solidify? Among the sections t14, the last section (for example, located 10 to 20 sections behind section P7) that has already reached the removable time is set as a new fixed section P, l. At the same time, the burying end form 12 and the end form 24 are also positioned in a predetermined position B, and then the end form 24 is pressed by the shield jack 4. After this, the movable bottom plate 17a of the restoring deformable portion 17 in the inner form body 15
As shown in FIG.
Fresh concrete 3 is poured directly into the section P Rel through the section P70. Fill the inside.

次いで、フレッシュコンクリート3をフレッシュコンク
リート流通口22から供給しつつ、或いはその供給を停
止した状態で各ジヤツキ19を伸長作動させ、可動底板
17aを所定力で内型枠本体15の半径外方向に押圧し
た状態となし、且つこの状態下でシールドジヤツキ4を
伸長作動させるようになす。これにより第3図(a)に
示すようにテールプレー)1aが地−山8に対して前方
へ移動し、その背後にはテールボイド6が二点鎖線で示
すように形成されるのであるが、可動底板17aがフレ
ッシュコンクリート3を所定力で矢印f1方向(概略、
内型枠本体15の半径外方向)へ押圧することからフレ
ッシュコンクリート3はテールボイド6の逐次発生に伴
い、これと同時に、圧密された状態で確実に充填される
と共にここに充填される量に相当するものが凹み工6か
ら11!1次に押し出されて、地山8の弛むことを抑制
するのである。
Next, while supplying fresh concrete 3 from the fresh concrete distribution port 22 or with the supply stopped, each jack 19 is operated to extend, and the movable bottom plate 17a is pressed radially outward of the inner form body 15 with a predetermined force. The shield jack 4 is operated to extend under this condition. As a result, the tail play 1a moves forward with respect to the ground 8 as shown in FIG. 3(a), and a tail void 6 is formed behind it as shown by the two-dot chain line. The movable bottom plate 17a moves the fresh concrete 3 with a predetermined force in the direction of the arrow f1 (approximately
Since the fresh concrete 3 is pressed in the radial outward direction of the inner formwork body 15, the tail voids 6 are generated successively, and at the same time, the fresh concrete 3 is reliably filled in a consolidated state, and the amount equivalent to that filled here is 11!1 is pushed out from the recess 6, thereby suppressing the loosening of the ground 8.

このさい、内型枠本体15に於ける円周方向の位置によ
っては部分的にフレッシュコンクリート3の加圧力や充
填量を調整する必要の生じる場合があるが、このような
ときは所望の可動底板17aのジヤツキ19力を調整し
或いは必要に応じてフレッシュコンクリート流通口22
を介してフレッシュコンクリート3の過不足を調整する
ようにする。かくしてシールド機1を一定距離だけ前進
させた状態でシールドジヤツキ4の作動を停止させると
共に、可動底板17aを第3図(b)に示すようにその
外表面が内型枠本体15の外周面に一致するまで変位さ
せ、フレッシュコンクリート3を矢印f1の方向へ全体
的に圧密させるのである。このさい直か打ちされた余剰
のフレッシュコンクリート3はフレッシュコンクリート
流通口22から排除される。そしてこの後は、第3図(
c)に示すようにシールドジヤツキ4を縮退変位させる
と共に妻型枠24等を所定態様に位置させて次回の直か
打ちコンクリート用区′#ip−,tを形成し、上記と
同様の操作を繰り返すのである。
At this time, depending on the position in the circumferential direction of the inner form body 15, it may be necessary to partially adjust the pressing force or filling amount of the fresh concrete 3, but in such a case, the desired movable bottom plate Adjust the jacking force 19 of 17a or open the fresh concrete flow port 22 as necessary.
Excess or deficiency of fresh concrete 3 is adjusted through. In this way, the operation of the shield jack 4 is stopped with the shield machine 1 moved forward by a certain distance, and the movable bottom plate 17a is moved so that its outer surface is the outer peripheral surface of the inner form body 15 as shown in FIG. 3(b). , and the fresh concrete 3 is entirely consolidated in the direction of the arrow f1. At this time, the surplus fresh concrete 3 poured directly is removed from the fresh concrete flow port 22. And after this, see Figure 3 (
As shown in c), the shield jack 4 is retracted and the end formwork 24 etc. are positioned in a predetermined manner to form the next direct pouring concrete area '#ip-,t, and the same operation as above is performed. Repeat.

(発明の効果) 以上からなる本発明によれば、次のような効果が期待で
きる。
(Effects of the Invention) According to the present invention as described above, the following effects can be expected.

即ち、 イ)従来のプレスジヤツキ5に準じて機能する復元変形
自在部位17が内型枠本体14の円周方向に複数あるこ
とから、その可動底板17aを選択的に適当条件で作動
させることにより内型枠本体14の円周方向の任意位置
を現場の状況に応じて最適に加圧することができる。
That is, a) Since there are a plurality of restoring and deformable parts 17 in the circumferential direction of the inner form body 14 that function in accordance with the conventional press jack 5, the inner form can be changed by selectively operating the movable bottom plate 17a under appropriate conditions. Any position in the circumferential direction of the form body 14 can be optimally pressurized depending on the site situation.

口)可動底板17aが内型枠本体14の半径外方向に変
位して直か打ちコンクリートを薄く且つ広く加圧するた
め、フレッシュコンクリート3に付与される加圧力のテ
ールエンドpへの伝播性が良好となって、テールボイド
6のコンクリート充填性が飛躍的に向上する。
Since the movable bottom plate 17a is displaced in the radial outward direction of the inner form body 14 to pressurize the directly cast concrete thinly and widely, the propagation of the pressurizing force applied to the fresh concrete 3 to the tail end p is good. As a result, the concrete filling properties of the tail void 6 are dramatically improved.

ハ)従来のプレスジヤツキ5及びプレスリング7が位置
された個所には妻型枠24を位置させるだけでよいこと
から、この周辺の構造が簡略となり、埋殺し妻型枠12
の装着が容易となる。
c) Since it is only necessary to position the end formwork 24 at the location where the conventional press jack 5 and press ring 7 were located, the structure around this is simplified, and the buried end formwork 12
Easy to install.

二)可動底板17aがフレッシュコンクリート3を鉄筋
11の側方から加圧することになるため、鉄筋11に対
する悪影響が少なくなる。
2) Since the movable bottom plate 17a pressurizes the fresh concrete 3 from the side of the reinforcing bars 11, the adverse effect on the reinforcing bars 11 is reduced.

ホ)鉄筋11が可動底板17aにより内型枠本体14の
半径外方向に加圧されることから、鉄筋11の軸方向継
手11aはその機能が損なわれ難い状況となり構造簡易
となし得る。
e) Since the reinforcing bars 11 are pressurized in the radially outward direction of the inner form body 14 by the movable bottom plate 17a, the function of the axial joints 11a of the reinforcing bars 11 is unlikely to be impaired, and the structure can be simplified.

へ)シールド機1の蛇行修正(吸収)機構を従来のプレ
スリング5の要部を押圧するもののようにプレスリング
5自体に装備しなくて済むので構造簡略になすことがで
きる共に蛇行修正(吸収)操作が容易且つ確実に行える
ものになし得る。
f) Since the meandering correction (absorption) mechanism of the shield machine 1 does not need to be installed on the press ring 5 itself unlike the conventional mechanism that presses the main parts of the press ring 5, the structure can be simplified and the meandering correction (absorption) mechanism can be simplified. ) Operation can be performed easily and reliably.

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

第1図〜第3図は本発明に係り、第1図は構築中のシー
ルドトンネルの断面図、第2図は第1図のA−A部断面
図、第3図(a)〜(C)は内型枠本体の使用説明図で
あり、また第4図は従来例を示す図である。 14・・・内型枠本体、16・・・凹み、17・・・復
元変形自在部位、17a・・・可動底板17b・・・周
壁、19・・・ジヤツキ、22・・・フレッシュコンク
リート流通口。 特許 出願人
Figures 1 to 3 relate to the present invention; Figure 1 is a sectional view of a shield tunnel under construction, Figure 2 is a sectional view taken along line A-A in Figure 1, and Figures 3 (a) to (C ) is a diagram for explaining the use of the inner form body, and FIG. 4 is a diagram showing a conventional example. 14...Inner formwork body, 16...Concave, 17...Restored and deformable portion, 17a...Movable bottom plate 17b...Peripheral wall, 19...Jacket, 22...Fresh concrete distribution port . patent applicant

Claims (1)

【特許請求の範囲】[Claims] 1、筒形となしたシールド工法に用いられる内型枠本体
(15)の外周面で円周方向適当間隔個所に凹み(16
)を画成するように作動する復元変形自在部(17)が
設けてあって、この復元変形自在部(17)は前記内型
枠本体(15)の外周面の一部をなす可動底板(17a
)とこれを摺動変位自在に案内する周壁(17b)とで
形成し、また前記可動底板(17a)は内型枠本体(1
5)の内方に備えたジャッキ(19)により駆動される
構成になすと共に、前記内型枠本体(15)の適所には
前記凹み(16)に連通するフレッシュコンクリート流
通口(22)が設けてあることを特徴とする直か打ちコ
ンクリートライニング工法用内型枠装置。
1. Concavities (16
), and this restoring and deformable part (17) operates to define a movable bottom plate ( 17a
) and a peripheral wall (17b) that guides it in a slidable manner, and the movable bottom plate (17a) is formed of an inner form body (1
5), and a fresh concrete flow port (22) communicating with the recess (16) is provided at a suitable position in the inner form body (15). An internal formwork device for direct cast concrete lining method.
JP63325613A 1988-12-22 1988-12-22 Internal formwork equipment for direct-cast concrete lining method. Expired - Lifetime JPH0631550B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63325613A JPH0631550B2 (en) 1988-12-22 1988-12-22 Internal formwork equipment for direct-cast concrete lining method.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63325613A JPH0631550B2 (en) 1988-12-22 1988-12-22 Internal formwork equipment for direct-cast concrete lining method.

Publications (2)

Publication Number Publication Date
JPH02171494A true JPH02171494A (en) 1990-07-03
JPH0631550B2 JPH0631550B2 (en) 1994-04-27

Family

ID=18178820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63325613A Expired - Lifetime JPH0631550B2 (en) 1988-12-22 1988-12-22 Internal formwork equipment for direct-cast concrete lining method.

Country Status (1)

Country Link
JP (1) JPH0631550B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0748994A (en) * 1993-08-09 1995-02-21 Saga Kogyo Kk Concrete compaction in case of placement of tunnel lining concrete and concrete placing center used therefor
JP2013087591A (en) * 2011-10-21 2013-05-13 Shimizu Corp Checking method and improvement method for deformation characteristic of back-filling material, and segment assembly timbering body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0748994A (en) * 1993-08-09 1995-02-21 Saga Kogyo Kk Concrete compaction in case of placement of tunnel lining concrete and concrete placing center used therefor
JP2013087591A (en) * 2011-10-21 2013-05-13 Shimizu Corp Checking method and improvement method for deformation characteristic of back-filling material, and segment assembly timbering body

Also Published As

Publication number Publication date
JPH0631550B2 (en) 1994-04-27

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