JPH0235198A - Constructing method for reinforced concrete covering work in nonsegment shield method - Google Patents
Constructing method for reinforced concrete covering work in nonsegment shield methodInfo
- Publication number
- JPH0235198A JPH0235198A JP63183278A JP18327888A JPH0235198A JP H0235198 A JPH0235198 A JP H0235198A JP 63183278 A JP63183278 A JP 63183278A JP 18327888 A JP18327888 A JP 18327888A JP H0235198 A JPH0235198 A JP H0235198A
- Authority
- JP
- Japan
- Prior art keywords
- formwork
- reinforcing bars
- pit
- bars
- assembled
- 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
- 238000000034 method Methods 0.000 title claims description 13
- 239000011150 reinforced concrete Substances 0.000 title claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 40
- 238000009415 formwork Methods 0.000 claims description 102
- 239000004567 concrete Substances 0.000 claims description 19
- 238000010276 construction Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 description 33
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005641 tunneling Effects 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」
シールド機を掘進さＵることによって地中に形成した坑
の壁面をセグメントを使用することなく；°σ工してト
ンネルの建設を行うようにしたノン・セグメント・シー
ルド工法における鉄筋コンクリート覆工の構築方法に関
する。[Detailed description of the invention] "Industrial application field" To construct a tunnel by drilling the wall surface of a pit formed underground by digging a shield machine without using segments; Concerning the construction method of reinforced concrete lining in the non-segment shield construction method.
「従来の技術及びその課題」
従来のこの種のシールドトンネルにおける鉄筋コンクリ
ート覆工の構築方法としては、周方向に３〜４分割した
鉄筋を坑内へ搬入した後、これらを所定の位置に配置す
るとともに、これらを手作業により結束して円璋状に組
み立てていくようにした方法が知られている。``Prior art and its problems'' The conventional method for constructing a reinforced concrete lining in this type of shield tunnel is to transport reinforcing bars divided into 3 to 4 parts in the circumferential direction into the mine, and then place them at predetermined positions. A method is known in which these are tied together manually and assembled into a circular shape.
ところが、上記従来のシールドトンネルにおけろ鉄筋コ
ンクリート覆工の構築方法にあっては、鉄筋を坑内にお
いて、直接坑の壁面に沿って組み立てて行くようにした
らのであるので作業能率が良くないこと、また鉄筋を坑
内で組み立てるため、配筋された鉄筋の位置の確保が困
難であり、コンクリートを打設する際に組み立てた鉄筋
がずれる恐れがあること、さらに全ての組み立て作業が
手作業となるため危険を伴うこと等の問題点があった。However, in the conventional method of constructing a reinforced concrete lining for shield tunnels, the reinforcing bars are assembled directly along the walls of the tunnel inside the tunnel, which is not very efficient. Because the reinforcing bars are assembled underground, it is difficult to secure the position of the placed reinforcing bars, there is a risk that the assembled reinforcing bars may shift when concrete is poured, and all assembly work is done by hand, which is dangerous. There were problems such as the accompanying
この発明は、上記の問題点に鑑みて為されたものであり
、鉄筋の組み立て作業を能率良く行うことができろとと
もに、鉄筋組み立て作業に占める手作業を極力少なくし
て、安全に作業を行うことができ、さらにコンクリート
を打設する際に組み立てた鉄筋の位置がずれることのな
いノン・セグメント・シールド工法における鉄筋コンク
リート覆工の構築方法の提供を目的としている。This invention was made in view of the above-mentioned problems, and aims to make it possible to assemble reinforcing bars efficiently, and to minimize the amount of manual labor involved in assembling reinforcing bars so that the work can be done safely. The purpose of the present invention is to provide a method for constructing a reinforced concrete lining using the non-segment shield construction method, in which the position of the assembled reinforcing bars does not shift when concrete is poured.
「課題を解決するための手段」
本発明は、上記問題点を解決するために、地上において
外型枠の内周面側に所定の形状に鉄筋を配筋した後、該
外型枠と内型枠とを連結部材で一体化し、ついで、この
ように一体化された内型枠と外型枠とを坑の壁面に沿っ
て環状に組み立てると共に、上記内型枠に形成された窓
部から各内外型枠間に分割して配筋された鉄筋を接続す
るようにした乙のである。"Means for Solving the Problems" In order to solve the above-mentioned problems, the present invention provides a method for arranging reinforcing bars in a predetermined shape on the inner circumference side of an outer formwork on the ground, and then The inner formwork and the outer formwork are integrated with a connecting member, and then the integrated inner formwork and outer formwork are assembled in an annular shape along the wall surface of the pit, and the inner formwork is opened from the window formed in the inner formwork. In this case, the reinforcing bars that were placed separately between the inner and outer formwork were connected.
１作用」
この発明では、予め地上で外型枠の内周面側に鉄筋を配
筋した後、該外型枠の内側に内型枠を一体化するように
しであるため、外型枠と内型枠との間に能率良く配筋を
行うことができろと共に、鉄筋を正確な位置にかつ確実
に配筋することができる。そのため、コンクリートを打
設ずろ際に、型枠内に配筋された鉄筋がずれることがな
い。また、現場における手作業が各型枠内に分割されて
配筋された鉄筋の接続作業だけとなるため、作業員が安
全に作業を行うことができる。1. In this invention, reinforcing bars are placed on the ground on the inner circumferential side of the outer formwork, and then the inner formwork is integrated inside the outer formwork. It is possible to efficiently arrange reinforcement between the inner formwork and the reinforcement, and it is also possible to arrange the reinforcing bars in accurate positions and reliably. Therefore, the reinforcing bars arranged in the formwork do not shift when concrete is placed. In addition, since the only manual work required on site is to connect the reinforcing bars that have been divided and arranged within each formwork, workers can work safely.
「実施例」 以下、本発明を図面を参照しながら説明する。"Example" Hereinafter, the present invention will be explained with reference to the drawings.
第１図ないし第１５図を用いて、本発明のノン・セグメ
ント・シールド工法における鉄筋コンクリート覆工の構
築方法の一実施例を示す乙のである。1 to 15 show an embodiment of the method for constructing a reinforced concrete lining in the non-segment shield construction method of the present invention.
図中符号１はシールド機であり、このシールド機１のス
キンプレート２の後部には、該シールド機によって掘削
された坑３の内面がコンクリートライニング４によって
覆工されており、シールド機ｌはジヤツキを駆動させる
ことにより、内型枠７を介してコンクリートライニング
４の硬化した部分に反力を取って推進するようになって
いる。Reference numeral 1 in the figure is a shield machine, and at the rear of the skin plate 2 of this shield machine 1, the inner surface of a pit 3 excavated by the shield machine is lined with concrete lining 4. By driving the concrete lining 4, the hardened portion of the concrete lining 4 is propelled by a reaction force through the inner formwork 7.
上記コンクリートライニング４は、第２図に示すように
、掘進するシールド機１の後部に掘削された坑の壁面に
沿って環状に形成されており、コンクリートライニング
４の外周面には周方向に複数に分割されると共に、坑の
長手方向に所定の幅を有ずろ外型枠６が設けられている
。また、コンクリートライニング４の内周面側には、上
記外型枠６と対向する１η置に、周方向に複数に分割さ
れると共に、坑の間通方向に所定幅をａする内型枠７が
設けられており、これら外型枠６と内型枠７とは、外型
枠６の内周面側に固定された接続部＋４６ａによって所
定の間隔をもって一体化されたしのとなっている。As shown in FIG. 2, the concrete lining 4 is formed in an annular shape along the wall surface of a pit excavated at the rear of the shield machine 1 to be excavated, and a plurality of concrete linings are provided on the outer peripheral surface of the concrete lining 4 in the circumferential direction. In addition, an outer formwork 6 having a predetermined width is provided in the longitudinal direction of the shaft. Further, on the inner circumferential surface side of the concrete lining 4, an inner formwork 7 is divided into a plurality of parts in the circumferential direction at 1η intervals facing the outer formwork 6, and has a predetermined width a in the tunneling direction of the shaft. are provided, and these outer formwork 6 and inner formwork 7 are integrated at a predetermined interval by a connecting part +46a fixed to the inner peripheral surface side of the outer formwork 6. .
本実施例における型枠は、第２図に示すように、坑の天
井に位置するに型枠と、その両隣のＩｌｌ。As shown in FIG. 2, the formwork in this embodiment includes the formwork located on the ceiling of the pit and the Ills on both sides of the formwork.
Ｂ２型枠と、側部及び底部の４つのＡ型枠とに周方向に
７つに分割されている。そして、上記外型枠６と内型枠
７との間には、坑の周方向に配筋された主筋８と、坑の
掘進方向に配筋された配力筋９とが配設されたらのとな
っている。It is divided into seven parts in the circumferential direction, including a B2 formwork and four A formworks on the sides and the bottom. Between the outer formwork 6 and the inner formwork 7, main reinforcing bars 8 arranged in the circumferential direction of the pit and distribution bars 9 arranged in the direction of excavation of the pit are arranged. It has become.
上記主筋８は、第３図ないし第５図に示すように、所定
の形状に形成された各内外型枠の間に、それぞれ所定の
長さに分割され、かつ円弧状に形成されて配設されてお
り、周方向に配設された主筋８．８．・・の接続部には
、各主筋８，８．・・を接続するラップ筋８ ａ、 ８
ａ、・・・が配設されている。また、上記配力筋９は
、内外型枠の間に坑のｎ■進方向に沿って配設されてい
ると共に、配力筋９の一端部が外型枠の切羽側（第５図
中Ｘ側）の端面と路間−の場所に位置しており、また、
他端部はテール側（第５図中Ｘ側）に所定の長さ突出し
て配置されることにより坑の掘進方向の継手部を形成し
ている。そして、上記主筋８および配力筋９は外型枠と
内型枠との中間位置において、接続部（４６ａに固定さ
れていると共に、主筋８の両端部にはラップ筋８ａを固
定するためのワッシャＩＯａが設けられている。また、
各配力筋９，９．・・・の切羽側には、該配力筋９と、
前方に配設される内外型枠に取り付けられた配力筋９の
継手部とを接続するだめのワッシャＩＯｂが設けられて
いる。As shown in FIGS. 3 to 5, the main reinforcing bars 8 are divided into predetermined lengths and arranged in an arc shape between the inner and outer molds formed in a predetermined shape. The main reinforcements 8.8. Each main reinforcement 8, 8. Wrap muscle connecting 8 a, 8
a, . . . are arranged. Further, the distribution bar 9 is arranged along the n-advance direction of the pit between the inner and outer formwork, and one end of the distribution bar 9 is located on the face side of the outer formwork (in Fig. 5). It is located between the end surface of the X side) and the road, and
The other end portion is arranged to protrude a predetermined length toward the tail side (X side in FIG. 5), thereby forming a joint portion in the digging direction of the pit. The main reinforcing bars 8 and the distribution bars 9 are fixed to a connecting portion (46a) at an intermediate position between the outer formwork and the inner formwork, and at both ends of the main reinforcing bars 8 there are provided wrap bars 8a for fixing them. A washer IOa is provided.Also,
Each distribution bar 9,9. ... on the face side thereof, the distribution bar 9,
A washer IOb is provided to connect the joint portion of the distribution bar 9 attached to the inner and outer formwork disposed in front.
そして、これらワッシャＩＯａ、ＩＯｂの形状は使用鉄
筋の外径の２倍＋αの大きさのだ円形となっている。The shape of these washers IOa and IOb is an ellipse whose size is twice the outer diameter of the reinforcing bar used + α.
なお、第６図ないし第８図は、主筋８及び配力筋９を外
型枠６と内型枠７との間にスペーサを用いて取り付ける
ようにした例を示すものである。6 to 8 show an example in which the main reinforcing bars 8 and the distribution bars 9 are attached between the outer formwork 6 and the inner formwork 7 using spacers.
外型枠７の内周面には接続部材６ａが固定されており、
さらに、第６図に示すように、外型枠６の内周而には周
方向に配設された接続部材６ａに沿って配力筋用スペー
サー１１が固定されている。さらに、坑の掘進方向に沿
って外型枠６の所定間隔ｆηには、第８図に示すように
、主筋用スペーサーＩ２が固定されたものとなっている
。上記スペーサ＋ １．１２は、例えば、丸鋼を鉄筋の
外径の２倍よりわずかに大きなだ円形に曲げて形成した
ものであり、その両側を同径の丸鋼を用いて外型枠６の
内周面のリブや足に溶接するようにした乙のである。A connecting member 6a is fixed to the inner peripheral surface of the outer formwork 7,
Furthermore, as shown in FIG. 6, force distribution reinforcement spacers 11 are fixed to the inner periphery of the outer formwork 6 along connecting members 6a disposed in the circumferential direction. Furthermore, as shown in FIG. 8, main reinforcement spacers I2 are fixed at predetermined intervals fη of the outer formwork 6 along the direction of excavation of the pit. The above-mentioned spacer + 1.12 is formed by bending a round steel into an oval shape slightly larger than twice the outer diameter of the reinforcing bar, and the outer formwork 6 is formed using round steel of the same diameter on both sides. This is because it is welded to the ribs and legs on the inner circumferential surface of the body.
つぎに、第９図ないし第１Ｉ図を用いて、本実施例の鉄
筋コンクリート覆工の＋１が築方法について１悦明する
。Next, using Figures 9 to 1I, +1 for the reinforced concrete lining of this example will be explained as to the construction method.
（ｉ） まず、地上において、外型枠６の内周面側に
主筋８及び配力筋９を所定の形状となるように配筋する
と共に、ワッシャ９を取り付けた後、外型枠６の内周面
側に内型枠７を接続部材６ａによって接続する。(i) First, on the ground, the main reinforcing bars 8 and the distribution bars 9 are arranged on the inner circumferential side of the outer formwork 6 so as to have a predetermined shape, and the washers 9 are attached, and then the outer formwork 6 is The inner formwork 7 is connected to the inner peripheral surface side by a connecting member 6a.
なお、主筋８の接続部分に配設されるラップ筋８ａは、
内型枠７に形成された窓部１３（第１１図（ｂ）参照）
側に位置する主筋８に添イつせて配置しておく。また、
Ｋ型枠の位置に配設される主筋８は、第１Ｏ図（ａ）に
示すように、Ｂ２型枠内に組み込んでおくようにする。Note that the lap reinforcements 8a arranged at the connecting portions of the main reinforcements 8 are as follows:
Window portion 13 formed in the inner formwork 7 (see FIG. 11(b))
It is placed along the main reinforcement 8 located on the side. Also,
The main reinforcing bars 8 arranged at the position of the K formwork are incorporated into the B2 formwork, as shown in Fig. 1O (a).
（ｉｉ） そして、第９図（ａ） 、 （ｂ）に示す
ように、シールド機のエレクタ（図示せず）を用いて、
内部に配筋されかつ一体化された内外型枠６．７を所定
の場所に（本実施例においては、Ａ型枠→Ｂ１型枠−８
２型枠−に型枠と坑の底部側からリング状に）設置する
。その際、配力筋９を既設の外型枠６に設置された配力
筋９に取り付けられたワッシャ１０ｂに差し込むことに
より、新たな配力筋９と既設の配力筋９とを接続する。(ii) Then, as shown in FIGS. 9(a) and (b), using the erector (not shown) of the shield machine,
The inner and outer formworks 6 and 7, which are internally reinforced and integrated, are placed at predetermined locations (in this example, from formwork A to formwork B1-8).
2.Installed in a ring shape from the bottom side of the formwork and the pit. At that time, the new distribution reinforcement 9 and the existing distribution reinforcement 9 are connected by inserting the distribution reinforcement 9 into the washer 10b attached to the distribution reinforcement 9 installed in the existing outer formwork 6. .
なお、配力筋９は型枠を１リング組み立てた後、切羽側
からワッノヤ＋Ｏｂ内に差し込んで既設の配力筋９と継
ぐようにしてもよい。In addition, after assembling one ring of formwork, the distribution bar 9 may be inserted into Waknoya+Ob from the face side and connected to the existing distribution bar 9.
（ｉｉｉ） そして、第１０図（ｂ）に示すように、
坑の内周而に各Ａ、ｎ、に型枠が１リング分組み立てら
れた後には、第１１図（ｂ）に示すように、内型枠７の
内周面に形成された窓Ｉ３から手を差し込んで、予め内
部に配設されたラップ筋８ａを、凸型枠の接続部分に押
し出して該ラップ筋８ａによって各主筋同士を接続する
。(iii) Then, as shown in Figure 10(b),
After one ring of formwork is assembled at each A and n in the inner circumference of the pit, as shown in FIG. The operator inserts his/her hand and pushes out the wrap line 8a, which has been placed inside beforehand, onto the connecting portion of the convex form, and connects each main bar with the wrap line 8a.
（１ｖ）最後に、第１θ図（ｂ）に示すように、天井部
分にに型枠をエレクタを用いて、設置した後には、第１
０図（ｃ）に示すように、Ｂ２型粋に組み込んでおいた
主筋８を、内型枠７に形成された窓部１３から手を差し
込んで、Ｋ型枠側に押出すことにより、所定の位置に配
筋する。(1v) Finally, as shown in Figure 1θ (b), after installing the formwork on the ceiling using an erector,
As shown in Fig. 0 (c), the main reinforcement 8 that has been incorporated into the B2 type is inserted into the window 13 formed in the inner formwork 7 and pushed out toward the K type frame. Place reinforcement at the location.
（ｖ＞ 以下上記の工程を所定のリング数、例えば、
４リング分だけ、坑３の内面に沿って設置した後には、
第１図に示すように、内型枠７の内側から上記外型枠６
と内型枠７との間にコンクリートＣを充填し、坑３の壁
面の覆工を行う。(v> The above steps are repeated for a predetermined number of rings, for example,
After installing 4 rings along the inner surface of hole 3,
As shown in FIG. 1, the outer formwork 6 is
Concrete C is filled between the inner formwork 7 and the inner formwork 7, and the wall of the pit 3 is lined.
（ｖｉ） そして、上記型枠内に打設されたコンクリ
ｈ Ｃｈ＜硬化した後には、上記打設コンクリートの内
側から内型枠７を取り外すことにより、坑の壁面がコン
クリートによってライニングされたトンネルとなる。(vi) After the concrete cast in the formwork has hardened, the inner formwork 7 is removed from the inside of the cast concrete, so that the wall surface of the pit becomes a tunnel lined with concrete. Become.
このように、本実施例のノン・セグメント・ノールドエ
法における鉄筋コンクリート覆工の構築方法にあっては
、外型枠６の内周面側に所定の形状に主筋８及び配力筋
９を配筋した後、外型枠６と内型枠７とを連結部材６ａ
で一体化した後、これら一体化された外型枠６と内型枠
７とを坑３の壁面に沿って環状に組み立てると共に、上
記内型枠７に形成された窓部１３から各主筋８に予め配
設されたラップ筋８ａを押出すことにより、谷外型枠に
分割して配筋された主筋８を接続するようにしたもので
あるので、外型枠と内型枠との間に能率良く配筋を行う
ことができるとノ（に、主筋８及び配力筋９を正確な位
置にかつ確実に配筋することができる。そのため、型枠
内にコンクリートＣを打設する際に、型枠内に配筋され
た主筋８ａ及び配力筋９がずれることがない。また、現
場における手作業が各型枠内に分割１されて配筋された
主筋８及び配力筋９の接続作業だけとなるため、作業員
が安全に作業を行うことができる。As described above, in the method of constructing a reinforced concrete lining using the non-segment Nordwe method of this embodiment, the main reinforcements 8 and the distribution reinforcements 9 are arranged in a predetermined shape on the inner peripheral surface side of the outer formwork 6. After that, the outer formwork 6 and the inner formwork 7 are connected by the connecting member 6a.
Then, the integrated outer formwork 6 and inner formwork 7 are assembled in a ring shape along the wall surface of the pit 3, and each main reinforcement 8 is inserted through the window 13 formed in the inner formwork 7. By extruding the lap reinforcements 8a that have been placed in advance in the valley, the main reinforcements 8 that have been divided and arranged in the outer formwork are connected. If the reinforcement can be efficiently arranged, the main reinforcement 8 and the distribution reinforcement 9 can be placed in accurate positions and reliably. Therefore, when pouring concrete C into the formwork, In addition, the main reinforcing bars 8a and the distribution reinforcements 9 arranged in the formwork do not shift.In addition, the main reinforcing bars 8a and the distribution reinforcements 9 arranged in the formwork are not misaligned. Since only the connection work is required, workers can work safely.
「発明の効果」
以上、詳細に説明したように、本発明のノン・セグメン
ト・シールド工法におけろ鉄筋コンクリート覆工の構築
方法にあっては、予め地上において、外型枠の内側に鉄
筋を配筋した後、該外型枠の内側に内型枠を一体化する
ようにしであるため、外型枠と内型枠との間に能率良く
配筋を行うことができると共に、鉄筋を正確な位置にか
つ確実に配筋することができる。そのため、コンクリー
トを打設する際に、型枠内に配筋された鉄筋がずれるこ
とかない。また、現場における作業が、各型枠の接続部
分に配設される鉄筋を、内型枠に形成された窓部から接
続するだけの作業となるため、作業Ｌ１が安全に作業を
行うことができる効果を奏ずろ。"Effects of the Invention" As explained in detail above, in the method of constructing a reinforced concrete lining in the non-segment shield construction method of the present invention, reinforcing bars are placed inside the outer formwork in advance on the ground. After reinforcing, the inner formwork is integrated inside the outer formwork, so it is possible to efficiently place the reinforcing bars between the outer formwork and the inner formwork, and to place the reinforcing bars accurately. Reinforcement can be placed in position and reliably. Therefore, when pouring concrete, the reinforcing bars placed in the formwork will not shift. In addition, since the work on site involves simply connecting the reinforcing bars placed at the connecting parts of each formwork through the windows formed in the inner formwork, work L1 cannot be carried out safely. Make the most of your efforts.
第１図ないし第１１図は、本発明のノン・セグメント・
シールドにおける鉄筋コンクリート覆工の構築方法を示
すしのであり、第１図は本発明の方法によって構築され
たシールドトンネルの縦断面図、第２図は第１図の■−
■断面を示す図であり、シールドトンネルの横断面図、
第３図は内部に鉄筋が配筋された外型枠と内型枠の正面
図、第４図は第３図のＩＶ−ＩＶ断面を示すしのであり
、内部に鉄筋が配筋された外型枠と内型枠の側断面図、
第５図は第３図の■−■断面を示すしのであり、内部に
鉄筋が配筋された内型枠の平面図、第６図ないし第８図
は型枠にワッシャを用いて鉄筋を配筋するようにしたも
のであり、第６図は型枠の正面図、第７図は第６図の平
面図、第８図は第６図の側断面図、第９図は坑の壁面に
沿って型枠を組み立てているところを示す図であり、第
９図（ａ）。
（ｂ）は坑の側断面図、第１Ｏ図（ａ）、（ｂ）、（ｃ
）は坑の壁面に型枠を組み立てているところを説明する
ための図であり、第１０図（ａ）は型枠の正面図、第１
Ｑ図（ｂ）はに型枠を設置した状態の型枠の正面図、第
１０図（ｅ）はに型枠に主筋を配筋している窓側に配設
されたラップ筋を主筋に添わせた状態の断面図、第１１
図（ｂ）は窓から手を差し込んでよ筋同士をラップ筋に
よって接続した状態を示す図である。
ｌ・・・・・・シールド機、６・・・・・・外型枠、６
ａ・・・・・・接続部材、７・・・・・・内型枠、８・
・・・・・主筋、９・・・・・・配力筋、８ａ・・・・
・・ラップ筋、Ｉ３・・・・・・窓部、Ｃ・・・・・・
コンクリート。1 to 11 illustrate the non-segmented structure of the present invention.
This figure shows a method for constructing a reinforced concrete lining in a shield. Figure 1 is a vertical cross-sectional view of a shield tunnel constructed by the method of the present invention, and Figure 2 is a cross-sectional view of the shield tunnel constructed by the method of the present invention.
■It is a cross-sectional view of the shield tunnel,
Figure 3 is a front view of the outer formwork and inner formwork with reinforcing bars arranged inside, and Figure 4 shows the IV-IV cross section of Fig. 3, showing the outside with reinforcing bars arranged inside. Side sectional view of formwork and inner formwork,
Figure 5 is a cross section taken along the line ■-■ in Figure 3, and is a plan view of the inner formwork with reinforcing bars arranged inside it. Fig. 6 is a front view of the formwork, Fig. 7 is a plan view of Fig. 6, Fig. 8 is a side sectional view of Fig. 6, and Fig. 9 is a wall surface of the pit. FIG. 9(a) is a diagram showing the formwork being assembled along the lines shown in FIG. (b) is a side sectional view of the pit, Figure 1O (a), (b), (c
) is a diagram for explaining how the formwork is assembled on the wall of the pit, and Figure 10(a) is a front view of the formwork,
Figure Q (b) is a front view of the formwork with the formwork installed, and Figure 10 (e) is a front view of the formwork with the main reinforcement placed on the formwork.The lap reinforcement placed on the window side is attached to the main reinforcement. Cross-sectional view of the folded state, No. 11
Figure (b) is a diagram showing a state in which a hand is inserted through a window and the reinforcements are connected by lap reinforcements. l...Shield machine, 6...Outer formwork, 6
a... Connection member, 7... Inner formwork, 8.
...Main reinforcement, 9...Distribution reinforcement, 8a...
...Wrap muscle, I3...window, C...
concrete.
Claims (1)
て、複数に分割された所定幅を有する内型枠と外型枠を
連結部材で一体化しつつ筒状に組み立てた後、上記内型
枠と外型枠との間にコンクリートを打設してコンクリー
トライニングを施すようにしたノン・セグメント・シー
ルド工法において、地上で上記各外型枠の内周面側に所
定の形状に鉄筋を配筋した後、該外型枠と内型枠とを連
結部材で一体化し、ついで、該一体化された内型枠と外
型枠とを坑の壁面に沿って環状に組み立てると共に、上
記内型枠に形成された窓部から各内外型枠間に分割して
配筋された鉄筋を接続するようにしたことを特徴とする
鉄筋コンクリート覆工の構築方法。After assembling an inner formwork and an outer formwork divided into a plurality of parts and each having a predetermined width into a cylindrical shape by integrating them with a connecting member along the wall surface of the pit formed at the rear of the shield machine that excavates, the above-mentioned inner mold is assembled. In the non-segment shield construction method, in which concrete is poured between the frame and the outer formwork and a concrete lining is applied, reinforcing bars are placed in a predetermined shape on the inner peripheral surface of each of the above outer formworks on the ground. After striation, the outer formwork and the inner formwork are integrated with a connecting member, and then the integrated inner formwork and outer formwork are assembled in an annular shape along the wall surface of the pit, and the inner formwork is assembled into a ring shape along the wall surface of the pit. A method for constructing a reinforced concrete lining, characterized in that reinforcing bars arranged separately between each inner and outer formwork are connected from a window portion formed in the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63183278A JP2686486B2 (en) | 1988-07-22 | 1988-07-22 | Construction method of reinforced concrete lining in non-segment shield method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63183278A JP2686486B2 (en) | 1988-07-22 | 1988-07-22 | Construction method of reinforced concrete lining in non-segment shield method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0235198A true JPH0235198A (en) | 1990-02-05 |
| JP2686486B2 JP2686486B2 (en) | 1997-12-08 |
Family
ID=16132860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63183278A Expired - Lifetime JP2686486B2 (en) | 1988-07-22 | 1988-07-22 | Construction method of reinforced concrete lining in non-segment shield method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2686486B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6467974B1 (en) | 1999-08-11 | 2002-10-22 | Shotoku Ltd. | Tiltable device for carrying an object thereon |
-
1988
- 1988-07-22 JP JP63183278A patent/JP2686486B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6467974B1 (en) | 1999-08-11 | 2002-10-22 | Shotoku Ltd. | Tiltable device for carrying an object thereon |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2686486B2 (en) | 1997-12-08 |
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