JPH0652040B2 - Cast-in-place shield lining method - Google Patents
Cast-in-place shield lining methodInfo
- Publication number
- JPH0652040B2 JPH0652040B2 JP62283362A JP28336287A JPH0652040B2 JP H0652040 B2 JPH0652040 B2 JP H0652040B2 JP 62283362 A JP62283362 A JP 62283362A JP 28336287 A JP28336287 A JP 28336287A JP H0652040 B2 JPH0652040 B2 JP H0652040B2
- Authority
- JP
- Japan
- Prior art keywords
- lining
- concrete
- ring
- cast
- press
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000011800 void material Substances 0.000 claims description 7
- 230000002194 synthesizing effect Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000011417 postcuring Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Description
【発明の詳細な説明】 「発明の利用分野」 この発明は、場所打ちシールド覆工工法、特にリング状
に組立てた覆工シェル内に場所打ちコンクリートを充填
し、両者を一体化させて覆工するようにした工法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION “Field of Use of the Invention” The present invention relates to a cast-in-place shield lining method, in particular, a cast-in-place concrete is filled in a ring-shaped lining shell, and both are integrated to perform lining. It is related to the construction method to be done.
「従来技術、発明が解決せんとする問題点」 従来、シールド本体のテール部後方に型枠を組立てて場
所打ちコンクリートを充填する場所打ちシールド工法が
知られているが、この工法では掘進に伴って型枠の脱型
移動の作業を要するため、施工性が悪いという問題があ
った。"Prior art, problems to be solved by the invention" Conventionally, a cast-in-place shield construction method is known in which a formwork is assembled behind the tail portion of the shield body and the cast-in-place concrete is filled. There is a problem that the workability is poor because the work of removing the mold from the mold is required.
「問題点を解決するための手段」 この発明は前記従来の課題を解決するために、外周側底
面にコンクリートとの合成用コネクターを取付けた横断
面溝型をなす複数の円弧状の覆工シェルを、シールド本
体のテール部の内側に所定の空隙を保持してリングに組
立て、この覆工シェルのリングの前面にプレスリングを
密接して空隙の妻部を閉鎖した後、覆工シェル内に場所
打ちコンクリートを充填し、プレスリングにおける空隙
の対向面に進退駆動自在に設けた突き固め部材を反復的
に進退させることにより充填コンクリートを突き固めな
がらシールド本体を推進し、充填コンクリートの養生後
プレスリングを取外して前記工程を連続することによ
り、充填コンクリートをテールボイドに押出して地山に
密接一体化させると共に、締め固めたコンクリートと覆
工シェルとを結合一体化して両者の複合構造として止水
性の高い強固な覆工を構築することができ、しかも型枠
の脱型工程を不要として掘進能率を向上することを可能
とした場所打ちシールド覆工工法を提案するものであ
る。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention has a plurality of arcuate lining shells having a groove cross-section with a connector for synthesizing concrete attached to the outer peripheral side bottom surface. Is assembled into a ring while holding a predetermined space inside the tail part of the shield body, and the press ring is closely attached to the front surface of the ring of this lining shell to close the end part of the space, and then inside the lining shell. By filling cast-in-place concrete and repeatedly advancing and retracting the tamping member that is installed on the opposite surface of the gap in the press ring to move forward and backward, the shield body is propelled while tamping the filled concrete, and the post-curing press of the filled concrete is performed. By removing the ring and continuing the above process, the filled concrete is extruded into the tail void to be closely integrated with the ground, and the compacted concrete is By combining and integrating the cleat and the lining shell, it is possible to construct a strong lining with a high waterproofing property as a composite structure of both, and it is also possible to improve the efficiency of excavation by eliminating the mold demolding step. We propose a cast-in-place shield lining method.
「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のテール部において、第１図に示すよう
にシールド本体１の内周との間に所定の空隙２を保持し
て複数枚の覆工シェル３をリング状に組立て、１又は２
以上の覆工リングを構成する。"Example" Hereinafter, an example of the present invention shown in the drawings will be described.
As shown in FIG. 1, in the tail portion of the shield body 1, a predetermined gap 2 is held between the shield body 1 and the inner periphery of the shield body 1, and a plurality of lining shells 3 are assembled in a ring shape to form 1 or 2
The above lining ring is configured.
覆工シェル３は、防錆処理した鋼板等により横断面溝型
をなす円弧状の箱型に成形され、地山からの荷重やシー
ルド推進反力に耐え得る強度に結成されており、その底
板３ａの外周面にはコンクリートとの合成用コネクター
４が固着され、また底板３ａの内周面には防錆と仕上を
兼用するセラミックコーティング等、耐摩耗性及び耐蝕
性を有するコーティング材５が被覆されている。The lining shell 3 is formed of a rust-proof steel plate or the like into an arc-shaped box shape having a groove cross section, and is formed to have a strength capable of withstanding the load from the natural ground and the shield propulsion reaction force. The outer peripheral surface of 3a is fixed with a connector 4 for synthesizing with concrete, and the inner peripheral surface of the bottom plate 3a is coated with a coating material 5 having wear resistance and corrosion resistance, such as a ceramic coating for both rust prevention and finishing. Has been done.
合成用コネクター４は、覆工シェル３の底面に多数突設
したスタッドジベル、或いは並列状又は格子状に溶接し
た鋼板又は型材等、覆工シェル３の内部にコンクリート
を充填したとき、これに埋設されて底板３ａをコンクリ
ートと合成一体化し得る部材からなり、必要に応じて覆
工シェル３の底板３ａの周縁に立ち上げた前後の鉤形状
の枠板３ｂ，３ｂ′或いは左右の枠板３ｃ，３ｃ′の内
面に突設してもよい。The synthesizing connector 4 is embedded in concrete when the inside of the lining shell 3 is filled with concrete, such as stud dowels protruding from the bottom surface of the lining shell 3 or steel plates or mold members welded in parallel or in a grid pattern. The bottom plate 3a is composed of a member that can be synthetically integrated with concrete, and if necessary, the front and rear hook-shaped frame plates 3b and 3b 'or the left and right frame plates 3c, which are raised to the peripheral edge of the bottom plate 3a of the lining shell 3, It may be projected on the inner surface of 3c '.
なお、各覆工シェル３のリング方向の接合には、リング
内面側から接合面間に挿入できる楔状の継手を用いる。For joining the lining shells 3 in the ring direction, a wedge-shaped joint that can be inserted from the ring inner surface side to the joining surface is used.
このようにして覆工シェル３のリングの組立が完了した
後、リングの前面に環状に組立てたプレスリング６を密
接して設置し、空隙２の妻部を閉鎖する。After the assembly of the ring of the lining shell 3 is completed in this way, the press ring 6 assembled in an annular shape is closely installed on the front surface of the ring, and the end of the gap 2 is closed.
このプレスリング６には、空隙２の対向面に周方向に所
定間隔を置いてジャッキ７により進退する複数のプレス
体８が設けられている。The press ring 6 is provided with a plurality of press bodies 8 that are moved forward and backward by a jack 7 at predetermined intervals in the circumferential direction on the facing surface of the gap 2.
次いで、覆工シェル３或いはプレスリング６に設けた注
入孔９のいずれか一方又は両方から覆工シェル３の内部
及び空隙２内に場所打ちコンクリート１０を注入充填
し、これが充分に充填された状態においてプレス体８を
反復的に進退作動して突き固めを行いながら、プレスリ
ング６を介して覆工シェル３に反力をとって推進ジャッ
キ１１を伸張作動し、シールド本体１を推進する。Next, the cast-in-place concrete 10 is injected and filled into the interior of the lining shell 3 and the void 2 from either or both of the injection holes 9 provided in the lining shell 3 or the press ring 6, and a state in which this is sufficiently filled. In step (1), the press body 8 is repeatedly moved forward and backward to perform tamping, and a reaction force is applied to the lining shell 3 via the press ring 6 to extend the propelling jack 11 to propel the shield body 1.
このとき、シールド本体１の推進に伴って生ずるテール
ボイドにはプレス体８の突き固めにより充填コンクリー
ト１０が充填されるため、コンクリート１０はシールド
本体１の推進に応じて順次補給充填する。At this time, the tail void generated by the propulsion of the shield body 1 is filled with the filled concrete 10 by the compaction of the press body 8, so that the concrete 10 is sequentially replenished and filled according to the propulsion of the shield body 1.
このようにして、シールド本体１をリングスパンだけ推
進した状態において、覆工シェル３の内部及び空隙２内
にはプレス体８により締固められたコンクリート１０が
地山に密接されるまで密実に充填され、この状態で所要
時間養生することにより、覆工シェル３及び地山と一体
化した強固な覆工が構築される。In this way, in the state where the shield body 1 is propelled by only the ring span, the concrete 10 compacted by the press body 8 is densely filled inside the lining shell 3 and in the void 2 until it comes into close contact with the ground. Then, by curing for a required time in this state, a strong lining is integrated with the lining shell 3 and the ground.
そして、覆工シェル３の底板３ａに被覆したコーティン
グ材５により、覆工内周面は体裁よく仕上げられ、かつ
その防錆効果により耐久性を維持することができる。The coating material 5 covering the bottom plate 3a of the lining shell 3 finishes the inner surface of the lining in a good appearance, and the durability can be maintained due to the rust-preventing effect.
コンクリート１０の養生硬化後、プレスリング６を取り
外して前方に移動し、この覆工部の前方において順次同
様の工程を繰返して連続的に覆工する。After the curing and hardening of the concrete 10, the press ring 6 is removed and moved to the front, and the same steps are sequentially repeated in front of this lining portion to perform continuous lining.
「発明の効果」 以上の通りこの発明によれば、外周側底面にコンクリー
トとの合成用コネクターを取付けた横断面溝型をなす複
数の円弧状の覆工シェルを、シールド本体のテール部の
内側に所定の空隙を保持してリングに組立て、この覆工
シェルのリングの前面にプレスリングを密接して空隙の
妻部を閉鎖した後、覆工シェル内に場所打ちコンクリー
トを充填し、プレスリングにおける空隙の対向面に進退
駆動自在に設けた突き固め部材を反復的に進退させるこ
とにより充填コンクリートを突き固めながらシールド本
体を推進し、充填コンクリートの養生後プレスリングを
取外して前記工程を連続するので、プレス体の進退によ
って充填コンクリートを締固めながらテールボイドに押
出して地山に密接一体化させることができると共に、締
め固めたコンクリートと覆工シェルとを合成用コネクタ
ーにより結合一体化して両者の複合構造として止水性の
高い強固な覆工を構築することができ、しかも型枠の脱
型工程を不要として掘進能率を向上することができる。[Advantages of the Invention] As described above, according to the present invention, a plurality of arcuate lining shells having a groove cross-section with a connector for synthesizing concrete attached to the outer peripheral side bottom surface are provided inside the tail portion of the shield body. Assemble it into a ring while holding a predetermined gap in it, close the press ring to the front of the ring of this lining shell to close the end of the gap, and then fill the lining shell with cast-in-place concrete and press the ring. In the above, the tampering member provided on the opposite surface of the space is repeatedly moved forward and backward to propel the shield body while tamping the filled concrete, and after curing the filled concrete, remove the press ring to continue the above steps. Therefore, it is possible to extrude the filled concrete into the tail void while compacting the filled concrete by advancing and retracting the press body so that it is closely integrated with the ground and The solidified concrete and the lining shell can be combined and integrated by a connector for synthesizing to construct a strong lining with a high waterproofing property as a composite structure of both, and moreover, the demolding process of the formwork is unnecessary and the excavation efficiency is improved. Can be improved.
第１図及び第２図ははこの発明の施工状態を示す部分縦
断側面図、第３図はこの発明に係る覆工シェルにより覆
工リングを組立てた状態を示す正面図、第４図はこの発
明に用いる覆工シェルを示す斜視図、第５図はこの発明
に用いるプレスリングの正面図である。 １……シールド本体、２……空隙、３……覆工シェル、
３ａ……底板、３ｂ，３ｂ′，３ｃ，３ｃ′……枠板、
４……合成用コネクター、５……コーティング材、６…
…プレスリング、７……ジャッキ、８……プレス体、９
……注入孔、１０……場所打ちコンクリート、１１……
推進ジャッキ。1 and 2 are partially longitudinal side views showing a construction state of the present invention, FIG. 3 is a front view showing a state where a lining ring is assembled by a lining shell according to the present invention, and FIG. 4 is this. FIG. 5 is a perspective view showing a lining shell used in the present invention, and FIG. 5 is a front view of a press ring used in the present invention. 1 ... shield body, 2 ... void, 3 ... lining shell,
3a ... bottom plate, 3b, 3b ', 3c, 3c' ... frame plate,
4 ... Synthetic connector, 5 ... Coating material, 6 ...
… Press ring, 7 …… Jack, 8 …… Press body, 9
…… Injection hole, 10 …… In-place concrete, 11 ……
Propulsion jack.
Claims (2)
クターを取付けた横断面溝型をなす円弧状の箱型に形成
された複数の覆工シェルを、シールド本体のテール部の
内側に所定の空隙を保持してリングに組立て、前記覆工
シェルのリングの前面にプレスリングを密接して前記空
隙前面を閉鎖した後、前記覆工シェル内に場所打ちコン
クリートを充填し、前記プレスリングにおける前記空隙
の閉鎖面にジャッキにより進退自在に設けたプレス体を
反復的に進退させることにより充填コンクリートを突き
固めながら前記シールド本体を推進し、前記コンクリー
トの養生後前記プレスリングを取外して前記工程を連続
することを特徴とする場所打ちシールド覆工工法。1. A plurality of lining shells formed in an arc-shaped box-shaped cross-section having a groove-shaped cross section with a connector for synthesizing concrete mounted on the outer peripheral surface of the bottom plate, are provided inside a tail portion of a shield body in a predetermined manner. Assembling into a ring while holding a gap, closing the gap front by closely contacting the press ring to the front surface of the ring of the lining shell, filling the lining shell with cast-in-place concrete, The shield body is propelled while compacting the filled concrete by repeatedly advancing and retreating the press body provided on the closed surface of the void by a jack, and after the concrete is cured, the press ring is removed to continue the process. A cast-in-place shield lining method characterized by:
材を被覆してなることを特徴とする特許請求の範囲第１
項記載の場所打ちシールド覆工工法。2. The coating material is coated on the inner peripheral surface of the bottom plate of the lining shell.
Cast-in-place shield lining method described in paragraph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62283362A JPH0652040B2 (en) | 1987-11-06 | 1987-11-06 | Cast-in-place shield lining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62283362A JPH0652040B2 (en) | 1987-11-06 | 1987-11-06 | Cast-in-place shield lining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01125500A JPH01125500A (en) | 1989-05-17 |
| JPH0652040B2 true JPH0652040B2 (en) | 1994-07-06 |
Family
ID=17664506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62283362A Expired - Fee Related JPH0652040B2 (en) | 1987-11-06 | 1987-11-06 | Cast-in-place shield lining method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0652040B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2612522B2 (en) * | 1991-12-09 | 1997-05-21 | 嘉司 松本 | Tunnel lining method and tunnel lining structure |
| JP2612525B2 (en) * | 1992-06-29 | 1997-05-21 | 嘉司 松本 | Tunnel lining method and tunnel lining structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62202199A (en) * | 1985-11-06 | 1987-09-05 | 鉄建建設株式会社 | Method of lining shield tunnel |
| JPS62215799A (en) * | 1987-03-06 | 1987-09-22 | 三井建設株式会社 | Shield excavator |
-
1987
- 1987-11-06 JP JP62283362A patent/JPH0652040B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01125500A (en) | 1989-05-17 |
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