JPH01187291A - Covering work for shield lining in shield tunnel - Google Patents
Covering work for shield lining in shield tunnelInfo
- Publication number
- JPH01187291A JPH01187291A JP63009664A JP966488A JPH01187291A JP H01187291 A JPH01187291 A JP H01187291A JP 63009664 A JP63009664 A JP 63009664A JP 966488 A JP966488 A JP 966488A JP H01187291 A JPH01187291 A JP H01187291A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- shield
- lining
- tunnel
- circular steel
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 238000009415 formwork Methods 0.000 claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 10
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000009412 basement excavation Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
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におけるシールげライニング
覆工工法に係るものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a seal lining method for shield tunnels.
（従来の技術）
従来のシールド工法は、ジ−ルビ掘削機を掘進して形成
されたトンネル穴並において、−次覆工としてコンクリ
ートセグメントをシールドテール並にエレクタ−等によ
って組立てて裏込材を地山に注入し、前記セグメントに
反力をとって掘削機を掘進したのち、前記セグメントの
内側に二次覆工としてコンクリートを巻立て、所定の断
面に仕上げているものが多い。(Conventional technology) The conventional shield construction method involves assembling concrete segments with a shield tail using an erector, etc. as a next lining in a tunnel hole formed by excavating with a Geelby excavator, and applying backfill material. In many cases, concrete is poured into the ground, the reaction force is taken up by the segment, and an excavator is used to dig, and then concrete is rolled inside the segment as a secondary lining to give it a predetermined cross section.
前記シールド工法は一次覆工、裏込め、二次覆工の３工
程となるため、工期が長びき、工費が嵩み、またシール
ド掘削機による掘削外径は一次覆工の外径より大きいた
めにテールボイｒが生起し、これによって周辺地盤の沈
下を招来することが多かった。The shield construction method involves three steps: primary lining, backfilling, and secondary lining, which lengthens the construction period and increases construction costs.Also, the outer diameter of excavation by the shield excavator is larger than the outer diameter of the primary lining. Tail boilers were generated, which often led to subsidence of the surrounding ground.
前記従来のシールド工法の欠点を克服する手段として場
所打ちライニング工法がある。There is a cast-in-place lining method as a means to overcome the drawbacks of the conventional shield method.
この工法はシールド掘削機の掘進に伴なってシールドテ
ール内で内型枠を組み立て、地山と内型枠との間にコン
クリートを加圧充填することによってテールボイドを生
起することなく、所定のコンクリートを打設し、こｈを
一次覆工とすると同時に永久購遺物とする工法で、地山
崩壊による地盤沈下を防止し、工程を短縮し、工期を短
縮し、コンクリートセグメントの代りに場所打ちコンク
リートを使用することＫよつ【コストダウンを図ること
ができる等の利点がある。In this construction method, the inner formwork is assembled within the shield tail as the shield excavator excavates, and concrete is pressurized and filled between the ground mass and the inner formwork to prevent tail voids from occurring. This method uses cast-in-place concrete instead of concrete segments to prevent ground subsidence due to ground collapse, shorten the process, shorten construction period, and use cast-in-place concrete instead of concrete segments. There are advantages such as being able to reduce costs.
（発明が解決しようとする課題）
しかしながら前記従来の場所打ちライニング工法は、内
型枠とライニングコンクリートとの一体化、同ライニン
グコンクリートの補強効果について問題点があった。(Problems to be Solved by the Invention) However, the conventional cast-in-place lining construction method has problems with the integration of the inner formwork and the lining concrete and the reinforcing effect of the lining concrete.
本発明は前記従来技術つ有する問題点に鑑みて提案され
たもので、その目的とする処は、内型枠とライニングコ
ンクリートとが一体化されたシールｒライニング工法を
提供する点にある。The present invention has been proposed in view of the problems of the prior art, and its purpose is to provide a seal lining construction method in which the inner formwork and lining concrete are integrated.
（！Ｉ！題を解決するための手段）
このような目的を達成するため、本発明に係るシールド
９ライニング工法は、シールド掘削機によって掘進され
たトンネル穴並に、）ラス状ジベルと鉄筋とを外周面に
取付けられた円形鋼板よりなる内型枠を組立て、同内型
枠及びシールド９テール並に既設の覆工コンクリートの
前面との間に形成された環状空間にコンクリートを充填
し、同コンクリートと前記円形鋼板とを一体化すること
を特徴とするシールドトンネル内図けるシールドライニ
ング覆エエ法ものである。(!I!Means for solving the problem) In order to achieve such an objective, the shield 9 lining construction method according to the present invention uses lath-shaped dowels and reinforcing bars, as well as tunnel holes excavated by shield excavators. Assemble an inner formwork made of circular steel plates attached to the outer peripheral surface, fill the annular space formed between the inner formwork, the shield 9 tail, and the front of the existing lining concrete, and fill the annular space with concrete. This is a method for covering shield lining inside a shield tunnel, characterized by integrating concrete and the circular steel plate.
（作 用）
本発明においては円形鋼板の外周面にトラス状ジベルと
鉄筋とを取付けたものを内型枠として使用し、シールド
掘削機によって掘進されたトンネル穴並に、同内型枠を
組立て、同内型枠及びシールド掘削機のシールド９テー
ル並に既設の覆工コンクリートの前面との間に形成さね
た環状空間にライニングコンクリートを充填するように
したので、同ライニングコンクリートは前記内型枠の主
体をなす円形鋼板に、同鋼板の外側に取付けられたトラ
ス状ジベルと鉄筋に一体化さね、またライニングコンク
リートは同トラス状ジベルと鉄筋とによって補強される
ものである。(Function) In the present invention, a circular steel plate with truss-shaped dowels and reinforcing bars attached to the outer peripheral surface is used as the inner formwork, and the inner formwork is assembled in the same way as a tunnel hole excavated by a shield excavator. Since the lining concrete was filled into the annular space formed between the inner formwork, the shield 9 tail of the shield excavator, and the front surface of the existing lining concrete, the lining concrete The circular steel plate that forms the main body of the frame is integrated with truss-shaped dowels and reinforcing bars attached to the outside of the steel plate, and the lining concrete is reinforced by the truss-shaped dowels and reinforcing bars.
（実施例） 以下本発明を図示の実施例について説明する。(Example) The present invention will be described below with reference to the illustrated embodiments.
シールド掘削機（Ａｌの掘進によって形成さねたトンネ
ル穴（Ｂｌ並におけるシールドテール（１）内側に１ト
ラス状ジベル（２）と円周方向鉄筋（３）及び軸方向鉄
筋（４）とが溶接された円形鋼板（５）を内型枠として
円形状に組立てる。A truss-shaped dowel (2), a circumferential reinforcing bar (3), and an axial reinforcing bar (4) are welded on the inside of a tunnel hole (shield tail (1) in Bl grade) formed by a shield excavator (Al tunnel hole). The circular steel plate (5) thus prepared is assembled into a circular shape as an inner formwork.
なお前記円形鋼板（５）は３〜６分割さｈてトンネル大
同内圧搬入さｈ１シールドテールプレート（１）内で円
形に組立て溶接され、相隣る分割円形鋼板（５）のジベ
ル状鉄筋（２）、円周方向鉄筋（３）は一部重合される
。（ＩＩ４図参照）
次いでシールドテールプレート（１）及び円形鋼板（５
）並に既設の覆工コンクリート（Ｃ１の前面との間に形
成された環状空間にコンクリートを充填し、シールド掘
削機（ＡＩＫ装架されたコンクリートプレスジヤツキ（
６）の先端の妻型枠を兼用するスプレッダ−（））Ｋよ
って加圧するとともに、この状態で前記シールド掘削機
（３）に装架されたシールドジヤツキ（図示せず）によ
って、既設部（Ｃ１に反力をとってシールｒ掘削機内を
掘進させながらシールドテールの後方に生起したテール
ボイドにコンクリートを充填する。The circular steel plate (5) is divided into 3 to 6 parts and carried into the tunnel under pressure, assembled into a circular shape within the shield tail plate (1) and welded, and the dowel-shaped reinforcing bars (2) of the adjacent divided circular steel plates (5) are ), the circumferential reinforcing bars (3) are partially polymerized. (See Figure II4) Next, the shield tail plate (1) and the circular steel plate (5
) and the existing lining concrete (C1
6) is pressurized by the spreader ( ) K which also serves as the end formwork, and in this state, the existing part ( The tail void generated at the rear of the shield tail is filled with concrete while the shield r excavator is made to excavate inside the excavator by taking the reaction force from C1.
かくして充填コンクリートが所定の強度Ｋまで硬化した
時点で、コンクリートプレスジヤツキ（６）を退縮して
、前記スプレッダ−（７）をコンクリート部より離隔し
、以下前記工程を反覆してトンネルを構築する。When the filled concrete has hardened to a predetermined strength K, the concrete press jack (6) is retracted to separate the spreader (7) from the concrete part, and the above steps are repeated to construct a tunnel. .
なお円形鋼板（５）のみでは土庄、水圧、コンクリート
打設圧に抵抗できない場合、円形鋼板（５）の内側に仮
設支保工を配設置、て補強し、コンクリートが硬化した
のち除去する。If the circular steel plate (5) alone cannot withstand the soil pressure, water pressure, and concrete placement pressure, temporary shoring will be placed inside the circular steel plate (5) for reinforcement and removed after the concrete has hardened.
図示の実施例は前記したようＫ１１ｌ成されているので
、トンネル完成時に、前記円形鋼板（５）がトンネルの
内表面を形成するとともに、同円形鋼板（５）はトラス
状ジベル（２）及び円周方向鉄筋（３）を介してライニ
ングコンクリートと一体化され、一つの版状構造体とな
る。Since the illustrated embodiment is made of K11L as described above, when the tunnel is completed, the circular steel plate (5) forms the inner surface of the tunnel, and the circular steel plate (5) forms the truss-shaped dowel (2) and the circular steel plate (5). It is integrated with the lining concrete via circumferential reinforcing bars (3) to form one plate-like structure.
第５図は本発明を上水道用トンネルの構築に適用した実
施例を示し、前記円形鋼板（５）が上水道管となるもの
である。従来は第６図に示すように一般のセグメントを
用いたシールドトンネル並に水道用鋼管（ａｌを敷設し
、トンネル並に気泡モルタル（ｂ）を充填していたが、
本方法によれば水道用鋼管自体を場所打ちライニングの
内型枠とすることＫよって、掘削断面を小さくすること
ができる。FIG. 5 shows an embodiment in which the present invention is applied to constructing a tunnel for waterworks, in which the circular steel plate (5) serves as a waterworks pipe. Conventionally, as shown in Figure 6, shield tunnels using general segments were laid with water steel pipes (aluminum), and filled with air bubble mortar (b) like tunnels.
According to this method, by using the water supply steel pipe itself as the inner form of the cast-in-place lining, the excavation cross section can be made smaller.
なお第６図中、［０１は一次覆工、（４１は二次覆工で
ある。In Fig. 6, [01 is the primary lining, and (41 is the secondary lining).
（発明の効果）
本発明によれば前記したように、シールドライニング工
法において、シールド掘削機により掘進されたトンネル
穴並に配設される内型枠を、外周面にトラス状ジイルと
鉄筋とが取付けられた円形鋼板を使用することによって
、同円形鋼板と覆工コンクリートとを一体化するととも
忙、覆工コンクリートを補強し、特に上水道用トンネル
構築時、前記円形鋼板を上水道用鋼管とすることによっ
て、従来のようにシールドトンネルの二次覆工並に上水
道鋼管固定用モルタルを充填する必要がな（なり、掘削
断面を縮減しうるものである。(Effects of the Invention) According to the present invention, as described above, in the shield lining method, the inner formwork disposed in the same manner as a tunnel hole excavated by a shield excavator is provided with truss-shaped jills and reinforcing bars on the outer peripheral surface. By using the attached circular steel plate, the circular steel plate and lining concrete can be integrated and the lining concrete can be reinforced, and the circular steel plate can be used as a steel pipe for water supply, especially when constructing a tunnel for water supply. This eliminates the need for secondary lining of shield tunnels and filling with mortar for fixing water supply steel pipes, unlike in the past, and the excavation cross section can be reduced.
第１図は本発明に係るシールドトンネルにおけるシール
ド９ライニング覆エエ法の一実施例の実施状況を示す縦
断側面図、ｗｃ２図はその縦断正面図、第３図は覆工コ
ンクリート部の配筋状態を示す平面図、第４図は円形鋼
板の配置状態を示す縦断正面図、第５図は本発明を上水
道用シールドトンネルの施工に適用した実施例を示す縦
断正面図、第６図は従来工法による上水道用シールドト
ンネルの縦断正面図である。Fig. 1 is a longitudinal side view showing the implementation status of one embodiment of the shield 9 lining lining method in a shield tunnel according to the present invention, Fig. wc2 is a longitudinal sectional front view thereof, and Fig. 3 is the reinforcement arrangement of the lining concrete part. FIG. 4 is a vertical sectional front view showing the arrangement of circular steel plates, FIG. 5 is a vertical sectional front view showing an embodiment in which the present invention is applied to the construction of a shield tunnel for water supply, and FIG. 6 is a conventional construction method. FIG.
Claims (1)
トラス状ジベルと鉄筋とを外周面に取付けられた円形鋼
板よりなる内型枠を組立て、同内型枠及びシールドテー
ル並に既設の覆工コンクリートの前面との間に形成され
た環状空間にコンクリートを充填し、同コンクリートと
前記円形鋼板とを一体化することを特徴とするシールド
トンネルにおけるシールドライニング覆工工法。Inside the tunnel hole dug by the shield excavator,
An inner formwork made of circular steel plates with truss-shaped dowels and reinforcing bars attached to the outer circumferential surface is assembled, and concrete is poured into the annular space formed between the inner formwork, the shield tail, and the front of the existing concrete lining. A shield lining construction method for a shield tunnel, characterized by filling the concrete with the circular steel plate and integrating the concrete with the circular steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63009664A JPH01187291A (en) | 1988-01-21 | 1988-01-21 | Covering work for shield lining in shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63009664A JPH01187291A (en) | 1988-01-21 | 1988-01-21 | Covering work for shield lining in shield tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01187291A true JPH01187291A (en) | 1989-07-26 |
Family
ID=11726483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63009664A Pending JPH01187291A (en) | 1988-01-21 | 1988-01-21 | Covering work for shield lining in shield tunnel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01187291A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05156896A (en) * | 1991-12-09 | 1993-06-22 | Yoshiji Matsumoto | Tunnel covering work method, tunnel covering structure, and tunnel covering body |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4411326Y1 (en) * | 1965-06-17 | 1969-05-10 | ||
| JPS4827638B1 (en) * | 1970-02-18 | 1973-08-24 |
-
1988
- 1988-01-21 JP JP63009664A patent/JPH01187291A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4411326Y1 (en) * | 1965-06-17 | 1969-05-10 | ||
| JPS4827638B1 (en) * | 1970-02-18 | 1973-08-24 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05156896A (en) * | 1991-12-09 | 1993-06-22 | Yoshiji Matsumoto | Tunnel covering work method, tunnel covering structure, and tunnel covering body |
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