JPS63206598A - Method of cast-in-place lining construction in shield tunnel - Google Patents
Method of cast-in-place lining construction in shield tunnelInfo
- Publication number
- JPS63206598A JPS63206598A JP62038733A JP3873387A JPS63206598A JP S63206598 A JPS63206598 A JP S63206598A JP 62038733 A JP62038733 A JP 62038733A JP 3873387 A JP3873387 A JP 3873387A JP S63206598 A JPS63206598 A JP S63206598A
- Authority
- JP
- Japan
- Prior art keywords
- expansion
- concrete
- shield
- contraction
- cast
- 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
- 238000010276 construction Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 title description 4
- 230000008602 contraction Effects 0.000 claims description 25
- 238000009415 formwork Methods 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000009412 basement excavation Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
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】
「発明の利用分野」
この発明は、シールドマシンによって掘進しなからその
後方に設置したライニング型枠周囲にコンクリートを打
設して、ライニングするようにしたシールドトンネルに
おける場所打ちライニング工法に関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] This invention relates to a shield tunnel where a shield tunnel is excavated by a shield machine and then lined by pouring concrete around a lining formwork installed behind the tunnel. This relates to the hammer lining construction method.
「従来技術、発明か解決せんとする問題点」従来のシー
ルドトンネルにおけるライニング工法は、掘削完了後テ
ール内において鉄筋及び内型枠を組み立て、テールプレ
ートを外型枠として内外の型枠間にコンクリートを打設
した後、ジヤツキにより進退作動する妻型枠兼用のプレ
スリンクにより未硬化のコンクリートを高圧でで加圧す
ることにより、推力を伝達しながらシールドマシンを推
進するようにした工法、或いは周囲の地山とその内側に
固定した鋼製型枠との間のリング状空間に前後にスライ
ドする妻型枠を設け、この妻型枠に設けた注入孔からコ
ンクリートを打設し、鋼製型枠に反力をとりながらシー
ルドマシンを推進するようにした工法が知られている。``Prior art, problems to be solved by invention'' The conventional lining method for shield tunnels involves assembling reinforcing bars and inner formwork inside the tail after excavation is completed, and using the tail plate as the outer formwork, concrete is placed between the inner and outer formwork. After placing the concrete, uncured concrete is pressurized at high pressure by a press link that doubles as a gable formwork that is moved forward and backward by jacks, and the shield machine is propelled while transmitting thrust. A gable formwork that slides back and forth is provided in the ring-shaped space between the ground and the steel formwork fixed inside the ground, concrete is poured through the injection hole provided in this gable form, and the steel formwork is poured. A method is known in which the shield machine is propelled while taking the reaction force.
しかしながら、前者の工法てはプレスリンクを介してコ
ンクリートに推力か伝達されるため、コンクリートに偏
圧かかかりその品質を損ねる欠点かあり、掘進とコンク
リートの打設を同時に行うことかてきない欠点かある。However, in the former method, the thrust force is transmitted to the concrete via the press link, which has the disadvantage of applying uneven pressure to the concrete and impairing its quality, and the disadvantage of having to carry out excavation and concrete pouring at the same time. be.
また、後者の工法ではシールドマシン本体の機体長が長
くなり、曲線施工においてアールの小さいカーラの施工
か困難であるという欠点がある。In addition, the latter construction method has the disadvantage that the length of the shield machine body becomes long and that it is difficult to construct a curler with a small radius in curved construction.
「問題点を解決するための手段」
この発明は前記従来の課顯を解決するために、シールド
本体の後端部の後方に設けたライニング型枠の先端部外
周に、圧力流体によって収縮状態からシールド本体後方
に向って膨張する膨縮体を設け、シールドマシンによる
掘進に応じてＷ縮体を徐々に膨張し、所定膨張状態にお
いて圧力流体を適宜排出して膨張圧を調節しなから膨縮
体の後方にコンクリートを加圧充填し、膨縮体が収縮状
態になるまでコンクリートを充填しすることにより、膨
縮体により地山を支持しながら安全にコンクリートを打
設することかできると共に、この膨縮体によりライニン
クコンクリートを均一に加圧てきるためその品質を良好
に保持することかでき、しかも構造か簡単で保守管理か
容易で、シールドマシンの機体長も短くて曲線施工も容
易な場所打ちライニング型枠を提案するものである。"Means for Solving the Problems" In order to solve the above-mentioned conventional problems, the present invention provides a means for preventing the contracted state from being caused by pressurized fluid on the outer periphery of the tip of the lining form provided behind the rear end of the shield body. An expansion and contraction body that expands toward the rear of the shield body is provided, and the W contraction body is gradually expanded as the shield machine excavates, and in a predetermined expansion state, the pressure fluid is discharged appropriately to adjust the expansion pressure, and then the W contraction body expands and contracts. By filling concrete under pressure behind the body and filling the concrete until the expansion and contraction body is in a contracted state, it is possible to safely place concrete while supporting the ground with the expansion and contraction body, and This expansion and contraction body uniformly pressurizes the linen concrete, making it possible to maintain good quality.Moreover, the structure is simple and maintenance is easy, and the length of the shield machine is short, making it easy to perform curved construction. This project proposes a cast-in-place lining formwork.
「実施例」
以下この発明を図面に示す実施例について説明すると、
シールド本体１の後端部の後方にライニング型枠２を設
置し、この型枠２の先端部とシールド本体１の後端部間
にテールリング３を設置し、その後端側に膨縮体４を型
枠２の外周をリング状に包囲するように設置するこの膨
縮体４は、高強度のゴム或いは軟質剛性樹脂などの軟弾
性材によりリンク状の袋体に成形され、その内外周は蛇
腹状をなして前後に膨張収縮自在に構成されており、こ
れにテールリング３側から複数の吸排管５を配管し、内
部にエアー又は液体等の流体を充填することによりシー
ルド本体１の後方に膨張し、また流体を適宜排出するこ
とにより膨張圧を調節しながら収縮するようになってい
る。"Embodiments" Below, embodiments of the present invention shown in the drawings will be described.
A lining formwork 2 is installed behind the rear end of the shield body 1, a tail ring 3 is installed between the tip of the form 2 and the rear end of the shield body 1, and an expansion and contraction body 4 is installed on the rear end side. This expansion/contraction body 4, which is installed so as to surround the outer periphery of the formwork 2 in a ring shape, is formed into a link-shaped bag body from a soft elastic material such as high-strength rubber or soft rigid resin, and its inner and outer peripheries are It has a bellows-like structure that can be expanded and contracted back and forth, and a plurality of suction and exhaust pipes 5 are piped from the tail ring 3 side to this, and by filling the inside with a fluid such as air or liquid, the rear of the shield body 1 can be expanded and contracted. It expands and contracts while adjusting the expansion pressure by appropriately discharging fluid.
型枠２には、膨縮体４の膨張時においてその先端が位置
する部分の近辺にコンクリート注入孔６が複数設けられ
ている。A plurality of concrete injection holes 6 are provided in the formwork 2 in the vicinity of a portion where the tip of the inflatable body 4 is located when it expands.
以上のように構成したシールドマシンにより掘進する際
には、掘進長に応じて吸排管５から膨縮体４内に流体を
徐々に充填し、掘進に伴って生ずる後方の地山間隙に膨
縮体４を膨張させてその周囲を常に地山及び既に施工さ
れたライーニングコンクリート７の先端に密着させる。When excavating with the shield machine configured as described above, fluid is gradually filled into the expansion and contraction body 4 from the suction and exhaust pipe 5 according to the length of the excavation, and expansion and contraction occurs in the gaps in the rear ground that occur as the excavation progresses. The body 4 is expanded so that its periphery is always brought into close contact with the ground and the tip of the lining concrete 7 that has already been constructed.
このようして所定長掘進して充分に膨縮体４が膨張した
状態において、注入孔６からコンクリートＣを膨縮体４
の後方側に注入充填し、この充填量に応じて膨縮体４の
内部の流体を徐々に排出し、その排出量を調整すること
により充填されたコンクリートＣに膨縮体４の適度な圧
力か作用するように管理しながら、順次膨縮体４が充分
に収縮するまてコンクリートＣを充填する。In this way, after digging for a predetermined length and in a state where the expansion and contraction body 4 is sufficiently expanded, concrete C is poured into the expansion and contraction body 4 from the injection hole 6.
The fluid inside the expansion and contraction body 4 is gradually discharged according to the amount of filling, and by adjusting the amount of discharge, the filled concrete C is given an appropriate pressure of the expansion and contraction body 4. The concrete C is sequentially filled with the concrete C until the expansion/contraction body 4 has sufficiently contracted while controlling the expansion and contraction body 4 to function properly.
なお、コンクリートＣの充填作業は、その充填圧と膨縮
体４の圧力とバランスを適度に調整することにより、シ
ールドマシンを推進させながら行うことも可能である。Note that the filling operation of the concrete C can be performed while the shield machine is being propelled by appropriately adjusting the balance between the filling pressure and the pressure of the expansion/contraction body 4.
このようにして所定長のコンクリートＣが打設されて硬
化した後、再び上記同様に膨縮体４を膨張させながら掘
進する。After a predetermined length of concrete C is cast and hardened in this manner, the excavation is carried out again while expanding the expansion/contraction body 4 in the same manner as described above.
シールド本体１の推進は、型枠２を反力としてもよく、
また膨縮体４を介してライニンタコンクリート７を反力
としてもよい。The shield body 1 may be propelled by using the formwork 2 as a reaction force,
Alternatively, the linenter concrete 7 may be used as a reaction force via the expansion/contraction body 4.
なお、コンクリートＣの充填は、例えばテールリング３
から膨縮体４の内部を通してその後端に開口する注入管
を設け、この注入管を膨縮体４の膨張収縮に伴って伸縮
自在とすることにより、この注入管をもってシールド本
体１の後部において充填することも可能である。Note that the filling of concrete C is, for example, in the tail ring 3.
By providing an injection tube that passes through the inside of the inflatable body 4 and opens at the rear end thereof, and by making this injection tube expandable and contractible as the expansion and contraction body 4 expands and contracts, filling can be carried out at the rear of the shield body 1 with this injection tube. It is also possible to do so.
また、テールリング３をシールドマシンｌに着脱自在に
取付けることにより、１１１縮体４か破損した場合に容
易に交換することがてきる。Further, by detachably attaching the tail ring 3 to the shield machine 1, it is possible to easily replace the 111 shrink body 4 if it is damaged.
「発明の効果」
以上の通りこの発明によれば、シールド本体の後端部の
後方に設けたライニング型枠の先端部外周に、圧力流体
によって収縮状態からシールド本体後方に向って膨張す
る膨縮体を設け、シールドマシンによる掘進に応じて膨
縮体を徐々に膨張し、所定膨張状態において圧力流体を
適宜排出して膨張圧を調節しなから膨縮体の後方にコン
クリートを加圧充填し、膨縮体か収縮状態になるまでコ
ンクリートを充填するので、膨張して地山間隙の周辺に
密着するＩｌｌ縮体により地山を支持し、肌落ち、地山
からの油水を防止しなから安全にかつ確実にコンクリー
トを打設することかてきると共に、この膨縮体の圧力管
理か容易であるのて、この膨縮体により充填したコンク
リートを均一に加圧してその品質を良好に保持すること
かできる。"Effects of the Invention" As described above, according to the present invention, the outer periphery of the tip of the lining formwork provided behind the rear end of the shield body expands and contracts from a contracted state toward the rear of the shield body due to pressure fluid. The expansion body is gradually expanded as the shield machine excavates, and in a predetermined expansion state, the pressure fluid is appropriately discharged to adjust the expansion pressure, and then concrete is pressurized and filled behind the expansion body. Since the concrete is filled until the concrete expands and contracts, it expands and adheres to the periphery of the gaps in the ground, supporting the ground and preventing skin fall and oil and water from flowing from the ground. In addition to being able to place concrete safely and reliably, it is also easy to control the pressure of this expansion and contraction body, so the filled concrete is uniformly pressurized by this expansion and contraction body and its quality is maintained well. I can do something.
また、膨縮体の構造も簡単で、損傷時の交換も容易であ
ることから保守管理か容易てあり、またシールドマシン
の機体長も短くて済むので、小さいアールの曲線施工も
確実に行うことがてきる。In addition, the structure of the expansion and contraction body is simple and easy to replace when damaged, making maintenance management easy.Also, the length of the shield machine can be shortened, making it possible to reliably perform curved construction with small radiuses. It's coming.
第１図はこの発明による施工状態を示す縦断側面図、第
２図はこの発明に係る膨縮体の膨張状態を示す部分拡大
縦断面図、第３図はコンクリート充填状態を示す部分拡
大縦断面図、第４図は膨縮体の収縮状態を示す部分拡大
縦断面図である。
１・・シールド本体、２・・ライニング型枠、３・・テ
ールリンク、４・・膨縮体、５・・吸排管、６・・注入
孔、７・・ライニンタコンクリート、Ｃ・・コンクリー
ト。
□ＣつFig. 1 is a vertical side view showing the construction state according to the present invention, Fig. 2 is a partially enlarged longitudinal cross-sectional view showing the expanded state of the inflatable body according to the present invention, and Fig. 3 is a partially enlarged longitudinal cross-sectional view showing the state of concrete filling. 4 are partially enlarged longitudinal cross-sectional views showing the deflated state of the inflatable body. 1. Shield body, 2. Lining formwork, 3. Tail link, 4. Expansion/contraction body, 5. Suction/exhaust pipe, 6. Injection hole, 7. Linenta concrete, C. Concrete. □C one
Claims (1)
先端部外周に、圧力流体によって収縮状態からシールド
本体後方に向って膨張する膨縮体を設け、シールドマシ
ンによる掘進に応じて前記膨縮体を徐々に膨張し、所定
膨張状態において前記圧力流体を適宜排出して膨張圧を
調節しながら前記膨縮体の後方にコンクリートを加圧充
填し、前記膨縮体が収縮状態になるまでコンクリートを
充填することを特徴とするシールドトンネルにおける場
所打ちライニング工法。An expansion/contraction body that expands toward the rear of the shield body from a contracted state due to pressure fluid is provided on the outer periphery of the tip of the lining formwork provided behind the rear end of the shield body. The body is gradually expanded, and in a predetermined expanded state, the pressure fluid is appropriately discharged to adjust the expansion pressure, and concrete is pressurized and filled behind the expandable body until the expandable body is in a contracted state. A cast-in-place lining construction method for shield tunnels characterized by filling with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62038733A JPH066876B2 (en) | 1987-02-21 | 1987-02-21 | Cast-in-place lining method in shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62038733A JPH066876B2 (en) | 1987-02-21 | 1987-02-21 | Cast-in-place lining method in shield tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63206598A true JPS63206598A (en) | 1988-08-25 |
| JPH066876B2 JPH066876B2 (en) | 1994-01-26 |
Family
ID=12533526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62038733A Expired - Fee Related JPH066876B2 (en) | 1987-02-21 | 1987-02-21 | Cast-in-place lining method in shield tunnel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH066876B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01203598A (en) * | 1988-02-10 | 1989-08-16 | Sato Kogyo Co Ltd | Construction work of tunnel |
| JPH02171495A (en) * | 1988-12-22 | 1990-07-03 | Oomotogumi:Kk | Gable form for directly placed concrete lining method |
-
1987
- 1987-02-21 JP JP62038733A patent/JPH066876B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01203598A (en) * | 1988-02-10 | 1989-08-16 | Sato Kogyo Co Ltd | Construction work of tunnel |
| JPH02171495A (en) * | 1988-12-22 | 1990-07-03 | Oomotogumi:Kk | Gable form for directly placed concrete lining method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH066876B2 (en) | 1994-01-26 |
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