JPH01223299A - Construction of tunnel - Google Patents
Construction of tunnelInfo
- Publication number
- JPH01223299A JPH01223299A JP63048545A JP4854588A JPH01223299A JP H01223299 A JPH01223299 A JP H01223299A JP 63048545 A JP63048545 A JP 63048545A JP 4854588 A JP4854588 A JP 4854588A JP H01223299 A JPH01223299 A JP H01223299A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- jacks
- reaction force
- jack
- tunnel
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 238000006243 chemical reaction Methods 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims description 19
- 238000009415 formwork Methods 0.000 claims description 18
- 238000005553 drilling Methods 0.000 abstract 3
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000009412 basement excavation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は場所打ちコンクリートライニングシールド工法
によるトンネル構築方法に係るものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a tunnel construction method using a cast-in-place concrete lining shield method.
（従来の技術）
本出願人等は暑に特公昭５４−３３６５６号公報におい
て、内外各日周上に沿って夫々推進ジヤツキ、及びコン
クリートプレスジヤツキを２列に装架したシールド掘削
機によって掘進されたトンネル孔内に内型枠を組立て、
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
ト前面の間にコンクリートを打設したのち、同打設コン
クリート及び前記内型枠に推進反力をとって前記コンク
リートプレスジヤツキ及びシールド掘進ジヤツキにより
シールド掘削機を推進させるトンネル構築方法を提案し
た。(Prior art) In Japanese Patent Publication No. 54-33656, the present applicant et al. conducted excavation work using a shield excavator equipped with two rows of propulsion jacks and concrete press jacks along each diurnal direction of the inner and outer sides. Assemble the inner formwork inside the tunnel hole,
After pouring concrete between the inner formwork, the shield tail, and the front of the existing lining concrete, the concrete press jack and shield excavation jack are applied by taking the propulsion reaction force to the cast concrete and the inner formwork. proposed a tunnel construction method that propels a shield excavator.
（発明が解決しようとする課題）
前記の方法においては、推進ジヤツキとコンクリートプ
レスジヤツキとが内外周２段に亘ってシールド掘削機に
装架されているので、同掘削機内の作業空間が狭隘にな
り、また内型枠の組立時、コンクリート打設時等に生じ
るシールド掘削機の後退圧力を支持するための特別なジ
ヤツキを必要とし、作業空間がより狭隘になる。(Problems to be Solved by the Invention) In the method described above, the propulsion jack and the concrete press jack are mounted on the shield excavator in two stages on the inner and outer peripheries, so the working space inside the excavator is narrow. In addition, special jacks are required to support the retreating pressure of the shield excavator that occurs when assembling the inner formwork and pouring concrete, making the work space even narrower.
本発明は前記従来の技術の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、シールド掘削機の内
部作業空間を広くとることができ、シールド掘削機の後
退圧力を確実に支持することができる改良されたトンネ
ル構築方法を提供する点にある。The present invention has been proposed in view of the problems of the conventional technology, and its purpose is to increase the internal working space of a shield excavator, and to ensure that the backward pressure of the shield excavator is reduced. An object of the present invention is to provide an improved tunnel construction method that can be supported.
（課題を解決するための手段）
前記の目的を達成するため、本発明に係るトンネル構築
方法は、同心円周上に沿ってシールド推進ジヤツキ及び
コンクリートプレスジヤツキを装架したシールド掘削機
によって掘進されたトンネル孔内に、トンネル軸方向に
亘って所定間隔毎にリング状鋼材を配設するとともに同
鋼材の内周に内型枠を組立て、前記リング状鋼材にトン
ネル軸方向に延びる反力支持鋼材を遊挿し、前記内型枠
の外周に覆工コンクリートを打設し、同打設コンクリー
トを前記コンクリートプレスジヤツキによってリング状
鋼材を介して加圧するとともに、前記推進ジヤツキによ
って前記反力支持鋼材に推進反力を支持せしめて前記掘
削機を推進し、ジヤツキ盛替え時に同掘削機に作用する
後退圧力を前記反力支持鋼材で支持するように構成され
たものである。(Means for Solving the Problem) In order to achieve the above-mentioned object, a tunnel construction method according to the present invention includes a tunnel construction method in which a tunnel is excavated along a concentric circumference by a shield excavator equipped with a shield propulsion jack and a concrete press jack. Ring-shaped steel members are arranged at predetermined intervals in the tunnel axial direction in the tunnel hole, and an inner formwork is assembled on the inner periphery of the steel members, and reaction force supporting steel members extending in the tunnel axial direction are attached to the ring-shaped steel members. is inserted loosely, and lining concrete is poured around the outer periphery of the inner formwork, and the poured concrete is pressurized via the ring-shaped steel material by the concrete press jack, and at the same time, the concrete is pressed against the reaction force support steel material by the propulsion jack. The excavator is propelled by supporting the propulsion reaction force, and the reaction force supporting steel material supports the backward pressure acting on the excavator when the jack is replaced.
（作用）
本発明によれば同心円周上に沿ってシールド推進ジヤツ
キ及びコンクリートプレスジヤツキが装架されたシール
ド掘削機によって掘進されたトンネル孔内に組立てられ
た内型枠の外周に覆工コンクリートを打設し、同打設コ
ンクリートを前記コンクリートプレスジヤツキ及びシー
ルド推進ジヤツキによりリング状鋼材を介して加圧し、
同リング状鋼材を加圧板及び覆工コンクリート部の妻型
枠と利用するとともに、前記リング状鋼材に遊貫された
反力支持鋼材に反力を支持させて、前記推進ジヤツキに
よってシールド掘削機を掘進させる。(Function) According to the present invention, a concrete lining is placed on the outer periphery of an inner formwork assembled in a tunnel hole excavated by a shield excavator equipped with a shield propulsion jack and a concrete press jack along concentric circles. and pressurize the poured concrete through the ring-shaped steel material by the concrete press jack and shield propulsion jack,
The ring-shaped steel material is used as the pressure plate and the end formwork of the concrete lining, and the reaction force is supported by the reaction force support steel material loosely penetrated through the ring-shaped steel material, and the shield excavator is driven by the propulsion jack. Make it dig.
而してシールド掘削機による掘進の進捗に伴って前記反
力支持鋼材を接続材を介してトンネル軸方向に連続させ
、トンネル軸方向の剛性を増大せしめる。As the shield excavator progresses in excavation, the reaction force supporting steel material is made to continue in the axial direction of the tunnel via the connecting member, thereby increasing the rigidity in the axial direction of the tunnel.
また内型枠の組立時、ジヤツキの盛替時においてシール
ド掘削機に作用する後退反力を、前記反力支持鋼材によ
って支持するものである。Further, the reaction force supporting steel material supports the backward reaction force that acts on the shield excavator when assembling the inner formwork and replacing the jack.
（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.
（Ａ）はシールド掘削機で、同心円周上にシールド推進
ジヤツキ（１）とコンクリートプレスジヤツキ（２）と
が１列に装架されている。第３図に示す実施例において
は、前記両ジヤツキ（１）（２）が交互に配設されてい
る。(A) is a shield excavator, in which a shield propulsion jack (1) and a concrete press jack (2) are mounted in a row on a concentric circumference. In the embodiment shown in FIG. 3, both jacks (1) and (2) are arranged alternately.
而して前記シールド掘削機（Ａ）によってトンネル孔を
掘進し、テールプレート（３）内周に、トンネル軸方向
に亘って所定間隔毎に例えばＨ型鋼より構成されたリン
グ状調材（４）を配設するとともに、同鋼材（４）の内
周に内型枠（５）を組立て、円周方向に亘って所定間隔
毎に、前記各リング状鋼材（４）に亘ってトンネル軸方
向に延びる反力支持鋼材（６）を遊貫する。Then, the shield excavator (A) excavates the tunnel hole, and rings (4) made of, for example, H-beam steel are placed on the inner periphery of the tail plate (3) at predetermined intervals in the axial direction of the tunnel. At the same time, an inner formwork (5) is assembled on the inner periphery of the steel material (4), and the inner formwork (5) is installed at predetermined intervals in the circumferential direction, extending in the tunnel axial direction across each of the ring-shaped steel materials (4). It loosely penetrates the extending reaction force support steel member (6).
次いで前記シールド掘削機（Ａ）のテールプレート（３
）及び内型枠（５）並に既設の覆工コンクリート前面と
の間にコンクリート（７）を打設し、前記コンクリート
プレスジヤツキ（２）を伸長してリング状鋼材（４）を
介して打設コンクリート（７）を加圧するとともに、推
進ジヤツキ（１）を伸長して、推進反力を反力支持鋼材
（６）を介して支承せしめることによって、シールド掘
削機（Ａ）を推進せしめる。Next, the tail plate (3) of the shield excavator (A)
), the inner formwork (5), and the front of the existing concrete lining, concrete (7) is poured, and the concrete press jack (2) is extended to insert the concrete (7) through the ring-shaped steel material (4). The shield excavator (A) is propelled by pressurizing the poured concrete (7) and extending the propulsion jack (1) to support the propulsion reaction force via the reaction force support steel (6).
図中（８）はコンクリートプレスジヤツキのスプレッダ
−である。In the figure, (8) is the spreader of the concrete press jack.
以下前記同様の操作を反覆してトンネルを構築する。Thereafter, the same operations as described above are repeated to construct a tunnel.
なお内型枠（５）の組立時、ジヤツキの盛替時等におい
てシールド掘削１ｍ （Ａ）に作用する後退反力は、前
記シールド推進ジヤツキ（１）を介して反力支持鋼材（
６）で支持する。In addition, the backward reaction force acting on the shield excavation 1m (A) during assembly of the inner formwork (5), replacement of the jack, etc. is transferred to the reaction force supporting steel (
6) is supported.
このようにシールド掘削機（Ａ）に装架されるジヤツキ
には、反力支持鋼材（５）によって推進反力及び後退圧
力を支持するものと、リング状鋼材（４）を介して打設
覆工コンクリート（７）に推進反力を支持させるものと
２種類の機能を持たせるもので、この２種類の推進ジヤ
ツキは前記第３図に示すように交互に配設される他、種
々な比率で配置される。In this way, the jack installed on the shield excavator (A) has one that supports the propulsion reaction force and retreating pressure using the reaction force support steel (5), and one that supports the driving reaction force and retreating pressure through the ring-shaped steel (4). The concrete (7) has two types of functions: one that supports the propulsion reaction force, and the two types of propulsion jacks are arranged alternately as shown in Figure 3 above, and they are also arranged in various ratios. It will be placed in
なお前記反力支持鋼材は全必要推進反力からコンクリー
トプレス圧力を除いた不足の圧力を支持するに足る十分
な断面を有する部材であって、シールド掘進機による掘
進に伴って、ｌスパン毎に継手ナツト、継手プレート等
の接続部材で接続可能であることが必要である。The reaction force supporting steel material is a member having a cross section sufficient to support the insufficient pressure excluding the concrete press pressure from the total required propulsion reaction force, and as the shield excavation machine excavates, It is necessary to be able to connect with connecting members such as a joint nut or a joint plate.
なお第１図には、反力支持鋼材（６）の端部にトンネル
軸方向に接続可能で、しかもシールド推進ジヤツキから
の圧力を均等に分布できるようにエンドプレート（９）
が装着されている。Additionally, in Figure 1, there is an end plate (9) that can be connected to the end of the reaction force support steel (6) in the tunnel axial direction and that can evenly distribute the pressure from the shield propulsion jack.
is installed.
（発明の効果）
本発明によれば、シールド掘削機によって掘進されたト
ンネル孔内の内型枠外周に、トンネル円周方向に延びる
リング状鋼材をトンネル軸方向に亘って所定間隔毎に配
設し、同リング状鋼材を遊挿するトンネル軸方向に延び
る反力支持調材で推進反力を分担支持させて、推進ジヤ
ツキによってシールド掘削機を推進せてめ、シールド掘
削機の推力管理及び方向制御等を良好ならしめ、リング
状鋼材の設置時、内型枠の組立時、或いはコンクリート
打設時に生じるシールド組立体の後退反力を支持せしめ
るものであり、従来のようにシールド掘削機後退反力支
持用のジヤツキを特別に設ける必要がない。(Effects of the Invention) According to the present invention, ring-shaped steel members extending in the tunnel circumferential direction are arranged at predetermined intervals in the tunnel axial direction on the outer periphery of the inner formwork in the tunnel hole excavated by the shield excavator. Then, the propulsion reaction force is shared and supported by the reaction force support member extending in the direction of the tunnel axis in which the ring-shaped steel material is loosely inserted, and the shield excavator is propelled by the propulsion jack, thereby controlling the thrust force and direction of the shield excavator. This system improves control, etc., and supports the backward reaction force of the shield assembly that occurs when installing ring-shaped steel materials, assembling inner formwork, or pouring concrete. There is no need to provide a special jack for force support.
また本発明によればシールド掘削機に装架されるジヤツ
キを、打設覆工コンクリートに圧力を伝達するコンクリ
ートプレスジヤツキと、反力支持鋼材に反力を伝達する
推進ジヤツキとの２種類の機能に使い分け、このためコ
ンクリートの圧力管理を良好ならしめ、しかも前記コン
クリートプレスジヤツキと推進ジヤツキとはシールド掘
進機に同心円周上に一列に配設されているので、前記し
たようにシールド掘削機の後退圧力支持ジヤツキを不要
ならしめたことと相俟って、シールド掘削機内の作業空
間を広くとることができ、作業性を向上しうるちのであ
る。Furthermore, according to the present invention, there are two types of jacks installed on the shield excavator: a concrete press jack that transmits pressure to the poured lining concrete, and a propulsion jack that transmits the reaction force to the reaction force supporting steel. The concrete press jack and the propulsion jack are arranged in a line on a concentric circle around the shield excavator, so as mentioned above, the concrete press jack and the propulsion jack are arranged in a row on a concentric circle around the shield excavator. Coupled with the elimination of the need for a backward pressure support jack, the work space inside the shield excavator can be expanded, improving work efficiency.
また前記反力支持鋼材はシールド掘削機による掘進の進
捗に伴ってトンネル軸方向に連続して継接されることに
より、トンネル軸方向の剛性が増大される。Further, the reaction force supporting steel material is continuously joined in the tunnel axial direction as the shield excavator progresses in excavation, thereby increasing the rigidity in the tunnel axial direction.
第１図及び第２図は夫々本発明に係るトンネル構築方法
の一実施例の実施状況を示し、第１図はシールド掘削機
におけるテールプレート附近覆工部の推進ジヤツキ位置
の状態を示す縦断面図、第２図はコンクリートプレスジ
ヤツキ位置の状態を示す縦断面図、第３図はシールド掘
削機における推進ジヤツキ及びコンクリートプレスジヤ
ツキの配置を示す縦断側面図である。
（Ａ） −−−シールド掘削機、
（１）・・・シールド推進ジヤツキ、
（２）−・コンクリートプレスジヤツキ、（３）−・・
テールプレート（４）−・・リング状鋼材、（５）・・
−内型枠、 （６）−・−反力支持鋼材、（７）
・・・コンクリート。
５３６一1 and 2 respectively show the implementation status of one embodiment of the tunnel construction method according to the present invention, and FIG. 1 is a longitudinal section showing the state of the propulsion jack position of the lining section near the tail plate of a shield excavator. 2 is a longitudinal cross-sectional view showing the position of the concrete press jack, and FIG. 3 is a longitudinal cross-sectional view showing the arrangement of the propulsion jack and concrete press jack in the shield excavator. (A) --- Shield excavator, (1) --- Shield propulsion jack, (2) --- Concrete press jack, (3) ---
Tail plate (4)--ring-shaped steel material, (5)...
-Inner formwork, (6)--Reaction force support steel, (7)
···concrete. 536 one
Claims (1)
ートプレスジャッキを装架したシールド掘削機によって
掘進されたトンネル孔内に、トンネル軸方向に亘って所
定間隔毎にリング状鋼材を配設するとともに同鋼材の内
周に内型枠を組立て、前記リング状鋼材にトンネル軸方
向に延びる反力支持鋼材を遊挿し、前記内型枠の外周に
覆工コンクリートを打設し、同打設コンクリートを前記
コンクリートプレスジャッキによってリング状鋼材を介
して加圧するとともに、前記推進ジャッキによって前記
反力支持鋼材に推進反力を支持せしめて前記掘削機を推
進し、ジャッキ盛替え時に同掘削機に作用する後退圧力
を前記反力支持鋼材で支持することを特徴とするトンネ
ル構築方法。Ring-shaped steel members are placed at predetermined intervals along the tunnel axis in a tunnel hole excavated by a shield excavator equipped with a shield propulsion jack and a concrete press jack along concentric circles. An inner formwork is assembled on the inner periphery, a reaction force supporting steel member extending in the tunnel axis direction is loosely inserted into the ring-shaped steel member, lining concrete is poured around the outer periphery of the inner formwork, and the poured concrete is placed in the concrete press. The jack applies pressure through the ring-shaped steel material, and the propulsion jack causes the reaction force supporting steel material to support the propulsion reaction force to propel the excavator. A tunnel construction method characterized by supporting with reaction force supporting steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63048545A JPH073160B2 (en) | 1988-03-03 | 1988-03-03 | Tunnel construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63048545A JPH073160B2 (en) | 1988-03-03 | 1988-03-03 | Tunnel construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01223299A true JPH01223299A (en) | 1989-09-06 |
| JPH073160B2 JPH073160B2 (en) | 1995-01-18 |
Family
ID=12806341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63048545A Expired - Fee Related JPH073160B2 (en) | 1988-03-03 | 1988-03-03 | Tunnel construction method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073160B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04250298A (en) * | 1991-01-24 | 1992-09-07 | Sato Kogyo Co Ltd | Cast-in-place lining method |
| JP2014125822A (en) * | 2012-12-27 | 2014-07-07 | Kabuki Construction Co Ltd | Method for constructing supporting and method for boring tunnel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6221989A (en) * | 1985-07-19 | 1987-01-30 | 三井建設株式会社 | Excavation method of shielding excavator |
| JPS63233198A (en) * | 1987-03-20 | 1988-09-28 | 東急建設株式会社 | Method of executing pc tunnel |
-
1988
- 1988-03-03 JP JP63048545A patent/JPH073160B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6221989A (en) * | 1985-07-19 | 1987-01-30 | 三井建設株式会社 | Excavation method of shielding excavator |
| JPS63233198A (en) * | 1987-03-20 | 1988-09-28 | 東急建設株式会社 | Method of executing pc tunnel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04250298A (en) * | 1991-01-24 | 1992-09-07 | Sato Kogyo Co Ltd | Cast-in-place lining method |
| JP2014125822A (en) * | 2012-12-27 | 2014-07-07 | Kabuki Construction Co Ltd | Method for constructing supporting and method for boring tunnel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH073160B2 (en) | 1995-01-18 |
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