JP2897666B2 - Reaction receiving structure for starting a shield machine - Google Patents
Reaction receiving structure for starting a shield machineInfo
- Publication number
- JP2897666B2 JP2897666B2 JP32573294A JP32573294A JP2897666B2 JP 2897666 B2 JP2897666 B2 JP 2897666B2 JP 32573294 A JP32573294 A JP 32573294A JP 32573294 A JP32573294 A JP 32573294A JP 2897666 B2 JP2897666 B2 JP 2897666B2
- Authority
- JP
- Japan
- Prior art keywords
- wall
- shield
- reaction
- starting
- shaft
- 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 - Lifetime
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は、シールド掘進機発進
用反力受け構造に関し、特に、内部に仕切壁を有する立
坑からシールド掘進機を発進させるためのシールド掘進
機発進用反力受け構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reaction receiving structure for starting a shield excavator, and more particularly to a reaction receiving structure for starting a shield excavator from a shaft having a partition wall therein. .
【0002】[0002]
【従来の技術】地下トンネルを掘削形成するためトンネ
ル工法の一つとして、従来よりシールド工法が知られて
おり、かかるシールド工法によれば、セグメント等によ
りトンネルの内周面を覆う強固な覆工体を形成しつつ、
シールド掘進機によりトンネルの掘削作業を行ってゆく
ものであるため、比較的軟弱な施工条件の悪い地盤に対
しても障害を受けることなく、かつ周囲の施設に影響を
及ぼすことなくトンネルを掘削形成して行くことがで
き、したがって、特に都市施設を地下に設けるためのト
ンネル工法として頻繁に採用されている。2. Description of the Related Art As one of tunnel construction methods for excavating and forming an underground tunnel, a shield construction method is conventionally known. According to such a shield construction method, a strong lining covering the inner peripheral surface of the tunnel with a segment or the like is used. While forming the body,
Since the tunnel excavation work is performed by a shield machine, the tunnel is excavated and formed without being affected by relatively soft ground with poor construction conditions and without affecting surrounding facilities. Therefore, it is frequently used as a tunneling method particularly for setting up urban facilities underground.
【0003】すなわち、このシールド工法は、泥水式シ
ールド工法、土圧式シールド工法等の種々のものが知ら
れているが、いずれのシールド工法も、通常は、地表面
から縦穴を掘削することにより形成された発進立坑か
ら、当該立坑の一側壁面を発進用の反力壁として利用し
つつシールド掘進機を反対側の側壁面に向かって発進さ
せ、このシールド掘進機によりトンネルの切羽面を切削
しながら到達立坑に向かって掘進して行くことによりト
ンネルを形成するものである。[0003] That is, various types of shield methods, such as a muddy water shield method and an earth pressure type shield method, are known, and all of these shield methods are usually formed by excavating a vertical hole from the ground surface. From the starting shaft, the shield excavator is started toward the opposite side wall surface while using one side wall surface of the shaft as a reaction wall for starting, and the face of the tunnel is cut by the shield excavating machine. The tunnel is formed by digging toward the arrival shaft while arriving.
【0004】一方、シールド工法によれば、一般に、発
進立坑と到達立坑との間の施工区間を一工区とし、各工
区ごとに形成されたシールドトンネルを立坑を介して接
続することにより、これらのシールドトンネルを一体と
して連通するものであるが、このような立坑の効率的な
利用を図るべく、複数の工区にまたがる大きな立坑を一
度に形成し、この立坑を適宜区画して、複数の工区の発
進立坑あるいは到達立坑として同時に使用できるように
する場合がある。[0004] On the other hand, according to the shield method, generally, the construction section between the starting shaft and the reaching shaft is defined as one construction section, and the shield tunnels formed for each construction section are connected via the shaft, whereby these construction sections are connected. In order to use such a shaft efficiently, a large shaft spanning multiple sections is formed at a time, and this shaft is appropriately divided, and the shield tunnel is divided into multiple sections. In some cases, it can be used simultaneously as a starting shaft or a reaching shaft.
【0005】そして、このような大きな立坑からシール
ド掘進機を発進させる際に、シールド掘進機を発進させ
るための反力を、発進側の立坑側壁面と対向する反対側
の立坑側壁面から得ようとすると、その反力を受けるた
めの構造が大がかりかつ複雑になるので、立坑内に設け
た仕切壁からこの反力を得るようにすることが考えられ
る。When the shield machine is started from such a large shaft, a reaction force for starting the shield machine is obtained from the side wall surface on the opposite side of the shaft wall on the starting side. Then, since the structure for receiving the reaction force becomes large and complicated, it is conceivable to obtain the reaction force from the partition wall provided in the shaft.
【0006】[0006]
【発明が解決しようとする課題】しかしながら、立坑内
の仕切壁から発進のための反力を得ようとすると、かか
る仕切壁は、一般に、例えば地中連続壁工法により造成
された連続壁や打設した鋼杭等を連設してなる強固なも
のであるが、その背面側は空洞部となって周囲の地山に
より直接支持されているものではないため、そのままの
状態では、シールド掘進機の発進時において掘進反力を
受けると、曲げやたわみ等の変形を生じやすいという課
題があった。However, in order to obtain a reaction force for starting from a partition wall in a shaft, such a partition wall is generally formed by, for example, a continuous wall formed by an underground continuous wall method or a perforated wall. Although it is a solid structure in which steel piles and the like are connected in series, the back side is a hollow part and is not directly supported by the surrounding ground, so the shield excavator There is a problem in that when excavation reaction force is received at the time of starting, deformation such as bending and bending is likely to occur.
【0007】また、このような連続壁や鋼杭等からなる
仕切壁は、路面覆工や山留め部材等の仮設構造物の基礎
部材あるいは支持部材となっている場合が多いため、か
かる仕切壁の変形により、これに支持されて架設された
仮設構造物が不安定になる惧れがあるという課題があっ
た。[0007] Such a continuous wall or a partition wall made of a steel pile is often used as a base member or a support member of a temporary structure such as a road surface lining or a mountain retaining member. There was a problem that the temporary structure supported and supported by the deformation may become unstable due to the deformation.
【0008】一方、この仕切壁を挾んで背向する方向
に、二台のシールド掘進機を同時に発進させれば、互い
の掘進反力を相殺して、仕切壁に曲げやたわみなどの変
形を生じさせることなく各シールド掘進機を発進させる
ことができるとも考えられるが、地盤の状況の相違等か
ら、これらの二台のシールド掘進機が同じ推進力で同時
に前進できるよう管理することが困難であるため、推進
力のアンバランスによって仕切壁に変形が生じる惧れが
ある。On the other hand, if two shield excavators are started simultaneously in the direction opposite to each other with the partition wall interposed therebetween, mutual excavation reaction forces are offset, and deformation such as bending and bending is caused on the partition wall. It is thought that each shield excavator can be started without causing it.However, due to differences in ground conditions, it is difficult to manage these two shield excavators so that they can advance simultaneously with the same propulsion force. Therefore, there is a possibility that the partition wall may be deformed due to the imbalance of propulsion.
【0009】そこで、この発明は、上記従来の課題を解
消するためになされたもので、内部に仕切壁を有する立
坑からシールド掘進機を発進させる際に、仕切壁に変形
を生じさせることなく、発進のための推進力を強固に支
持してシールド掘進機を安定して発進させることのでき
るシールド掘進機発進用反力受け構造を提供することを
目的とするものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. When a shield excavator is started from a shaft having a partition wall therein, the partition wall is not deformed. An object of the present invention is to provide a shield excavator starting reaction force receiving structure capable of stably starting a shield excavator by firmly supporting a propulsive force for starting.
【0010】また、この発明は、仕切壁に変形を生じさ
せることなく、仕切壁を挾んで背向する方向に、二台の
シールド掘進機を、安定した状態で同時に発進させるこ
とのできるシールド掘進機発進用反力受け構造を提供す
ることを目的とするものである。Further, the present invention provides a shield excavator capable of simultaneously starting two shield excavators stably in a direction opposite to each other across the partition wall without causing deformation of the partition wall. An object of the present invention is to provide a reaction force receiving structure for starting a vehicle.
【0011】[0011]
【課題を解決するための手段】この発明は、上記目的を
達成するためになされたもので、その要旨は、内部に仕
切壁を有する立坑からシールド掘進機を発進させるため
のシールド掘進機発進用反力受け構造であって、前記仕
切壁のシールド掘進機の発進方向前方側に、前記仕切壁
とは所定の間隔をおいて立設配置されるとともに、その
上端部及び下端部が裏込め支持部材を介して前記仕切壁
に添設される反力壁と、前記仕切壁のシールド掘進機の
発進方向後方側において、前記裏込め支持部材が添設さ
れる部位の裏部から、前記シールド掘進機が発進する側
の立坑側壁面とは反対側の立坑側壁面まで延長して、前
記シールド掘進機の発進時に前記反力壁から前記裏込め
支持部材を介して伝わる掘進反力を前記反対側の立坑側
壁面に伝える上部反力受け部材及び下部反力受け部材と
からなることを特徴とするシールド掘進機発進用反力受
け構造にある。SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and its gist is to start a shield excavator for starting a shield excavator from a shaft having a partition wall therein. A reaction force receiving structure, in which the partition wall is erected at a predetermined distance from the partition wall in the starting direction of the shield machine, and the upper end and the lower end of the partition wall are supported by backing. A reaction force wall attached to the partition wall via a member, and a shield excavation from a rear portion of a portion where the backfilling support member is attached, on a rear side of the partition wall in a starting direction of the shield excavator. The excavation reaction force transmitted from the reaction wall at the start of the shield excavation machine via the backfilling support member to the shaft shaft side surface opposite to the shaft wall surface on the side where the machine starts is transmitted to the opposite side. Upper part to the side wall of the shaft For shield machine start, characterized in that it consists of a force receiving member and a lower reaction force receiving member is in the reaction force receiving structure.
【0012】また、この発明の他の要旨は、前記シール
ド掘進機発進用反力受け構造を、前記仕切壁を挾んで双
方に背向して設け、相反する方向に、二台のシールド掘
進機を同時に発進可能とすることを特徴とするシールド
掘進機発進用反力受け構造にある。Another aspect of the present invention is that the shield excavator starting reaction force receiving structure is provided to face both sides of the partition wall, and two shield excavators are provided in opposite directions. And a reaction receiving structure for starting a shield machine.
【0013】[0013]
【作用】そして、この発明のシールド掘進機発進用反力
受け構造によれば、シールド掘進機の発進時における推
進力は、反力壁により支圧支持され、この支持力は、裏
込め支持部材を介するとともに、当該裏込め支持部材の
取付け部位における仕切壁の裏部からシールド掘進機が
発進する側の立坑側壁面とは反対側の立坑側壁面まで延
長する上部反力受け部材及び下部反力受け部材を介し
て、仕切壁に曲げ応力を生じさせることなく、当該反対
側の立坑側壁面まで伝達され、この反対側の立坑側壁面
により直接かつ強固に支持される。According to the reaction receiving structure for starting a shield excavator according to the present invention, the propulsive force of the shield excavator at the time of starting is supported by the reaction wall, and the supporting force is reduced by the backing support member. And a lower reaction force receiving member and a lower reaction force extending from the back of the partition wall at the mounting portion of the back-filling support member to the shaft wall surface opposite to the shaft wall surface on which the shield machine starts. Through the receiving member, the partition wall is transmitted to the opposite shaft wall without causing bending stress, and is directly and firmly supported by the opposite shaft wall.
【0014】また、反力壁がシールド掘進機の推進力を
指圧支持する際に曲げ変形を生じても、この反力壁は仕
切壁から間隔をおいて立設配置されているため、仕切壁
には変形を生じさせない。Further, even if the reaction wall is bent and deformed when the thrust of the shield machine is supported by the acupressure, the reaction wall is erected at a distance from the partition wall. Does not cause deformation.
【0015】そして、このシールド掘進機発進用反力受
け構造を、仕切壁を挾んで双方に背向して設ければ、相
反する方向に、二台のシールド掘進機を安定した状態で
同時に発進させることができる。If this shield excavator starting reaction receiving structure is provided opposite to each other with the partition wall interposed therebetween, the two shield excavating machines are simultaneously started in opposite directions in a stable state. Can be done.
【0016】[0016]
【実施例】以下、この発明の一実施例を添付図面を参照
しつつ詳細に説明する。この実施例にかかるシールド掘
進機発進用反力受け構造10,10’は、一例として、
図1に示すように、地表面から鉛直方向に縦穴を掘削す
るとともに、これの内壁面を防護することにより構築し
た立坑11を仕切壁12によって区画し、区画された各
作業空間13,13’から、仕切壁12を挾んで背向す
る方向に、二台のシールド掘進機14,14’を同時に
発進させることを可能にすべく設けられたものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. The reaction receiving structures 10, 10 'for starting a shield machine according to this embodiment are, for example,
As shown in FIG. 1, a vertical hole is excavated in a vertical direction from the ground surface, and a shaft 11 constructed by protecting the inner wall surface thereof is divided by a partition wall 12, and each of the divided work spaces 13 and 13 ′ is formed. Therefore, two shield excavators 14 and 14 'are provided so as to be able to simultaneously start in the direction opposite to each other with the partition wall 12 therebetween.
【0017】ここで、この実施例における立坑11は、
公知の種々の方法によって構築されるもので、例えば、
掘削作業に先立って、地中連続工法等により、地表面か
ら立坑11の周囲を囲む側壁15及び仕切壁12を地中
に形成した後、側壁15の内部を、山留支保部材16を
設置しながら順次掘り下げるとともに、掘削底面まで掘
り下げたら、基礎部材17を敷き均して底版コンクリー
ト18を打設することにより構築されるものである。な
お、立坑11の上端開口部分には、側壁15及び仕切壁
12を支持部材として、仮設構造物としての路面覆工1
9が設けられている。Here, the shaft 11 in this embodiment is:
It is constructed by various known methods, for example,
Prior to the excavation work, after forming the side wall 15 and the partition wall 12 surrounding the periphery of the shaft 11 from the ground surface by the underground continuous construction method or the like, the inside of the side wall 15 is provided with a ridge retaining member 16. While digging down one by one while digging down to the digging bottom, it is constructed by laying out the foundation members 17 and casting the bottom slab concrete 18. In addition, at the upper end opening of the shaft 11, the side wall 15 and the partition wall 12 are used as support members, and the road surface lining 1 as a temporary structure is used.
9 are provided.
【0018】そして、この実施例のシールド掘進機発進
用反力受け構造10,10’は、仕切壁12の各シール
ド掘進機14,14’の各々の発進方向前方側に、この
仕切壁12とは所定の間隔30をおいて立設配置される
とともに、その上端部及び下端部が裏込め支持部材2
0,20’を介して仕切壁12に添設される反力壁2
1,21’と、この仕切壁12の前記各シールド掘進機
14,14’の各々の発進方向後方側において、前記裏
込め支持部材20,20’が添設される部位の裏部か
ら、各シールド掘進機14,14’が発進する側の立坑
側壁面22,22’とは反対側の立坑側壁面23,2
3’まで各々延長する、上部反力受け部材としての梁部
材24,24’、及び下部反力受け部材としての側壁仕
切壁間底版コンクリート25,25’とによって構成さ
れている。なお、図1において、符号26,26’で示
されるものは、各シールド掘進機14,14’と反力壁
21,21’との間に介装設置されて、シールド掘進機
14,14’のシールドジャッキからの押圧力を反力壁
21,21’に伝達するための支圧架台である。Further, the shield excavator starting reaction force receiving structures 10 and 10 'of this embodiment are provided with the partition wall 12 and the shield excavator 14, 14' on the front side in the starting direction of each of the shield excavators 14, 14 '. Are erected at predetermined intervals 30, and the upper end and lower end thereof are
Reaction wall 2 attached to partition wall 12 via 0, 20 '
1, 21 'and the rear side of the partition wall 12 in the starting direction of each of the shield excavators 14, 14', from the back of the portion where the back-filling support members 20, 20 'are attached, Shaft side wall surfaces 23, 2 on the opposite side of shaft shaft side surfaces 22, 22 'on the side where shield machine 14, 14' starts.
The beam members 24, 24 'as upper reaction force receiving members and the bottom slab concrete 25, 25' as side reaction wall members which extend to 3 '. In FIG. 1, those indicated by reference numerals 26, 26 'are interposed between the shield excavators 14, 14' and the reaction walls 21, 21 ', respectively, and are shield excavators 14, 14'. This is a supporting frame for transmitting the pressing force from the shield jack to the reaction walls 21 and 21 '.
【0019】ここで、この実施例は、二台のシールド掘
進機14,14’を相反する方向に同時に発進させる場
合であって、全く同様の構成を有する二組の反力受け構
造10,10’を、仕切壁12を挾んで双方に設ける場
合について記載しているが、この発明は、この実施例の
態様に限定されるものではなく、二組の反力受け構造1
0,10’のうち一方のみを使用して、いずれかのシー
ルド掘進機14,14’のみを発進させても良く、ま
た、この反力受け構造10は、立坑11内に必ずしも二
組設ける必要はなく、単独で設けても良い。したがっ
て、以下の説明では、記載内容が重複する場合には、い
ずれか一方の反力受け構造10,10’のみについて記
載する。In this embodiment, two shield excavators 14, 14 'are started simultaneously in opposite directions, and two sets of reaction force receiving structures 10, 10 having exactly the same configuration. Are described on both sides of the partition wall 12, but the present invention is not limited to the embodiment of this embodiment, and two sets of reaction force receiving structures 1 are provided.
Only one of the shield excavators 14 and 14 ′ may be started using only one of the shield excavators 14 and 14 ′, and two sets of the reaction force receiving structure 10 are necessarily provided in the shaft 11. However, it may be provided alone. Therefore, in the following description, in the case where the description contents overlap, only one of the reaction force receiving structures 10, 10 'will be described.
【0020】そして、この実施例のシールド掘進機発進
用反力受け構造10を構成する反力壁21は、図2及び
図3にも示すように、3本のH形鋼31を、そのフラン
ジ部分を前面及び後面として平行に配置したものを一組
とし、これを3組仕切壁12に沿って所定の間隔をおい
て平行に立設配置してなるものである(図2参照)。な
お、かかる反力壁21を構成するH形鋼の大きさや本
数、配置間隔等は、シールド掘進機の発進時における推
進反力等を鑑みて適宜設計されるものである。As shown in FIGS. 2 and 3, the reaction wall 21 constituting the reaction force receiving structure 10 for starting a shield excavator according to this embodiment includes three H-shaped steel members 31 each having a flange. A set of parts arranged in parallel with the front and rear surfaces as a set is formed as a set, and these are set up and arranged in parallel at predetermined intervals along the three sets of partition walls 12 (see FIG. 2). The size, number, spacing, and the like of the H-beams constituting the reaction wall 21 are appropriately designed in consideration of the propulsion reaction force when the shield machine is started.
【0021】そして、この反力壁21の上端部及び下端
部には、これの後面のフランジと仕切壁12との間に、
裏込め支持部材20としての裏込めコンクリートが充填
打設され、これが固化することにより、反力壁21は仕
切壁12に添設されるとともに、かかる上端部及び下端
部に位置する裏込め支持部材20により上下を挟まれる
部分において、反力壁21と仕切壁12との間には、間
隔30が形成保持されることになる(図3参照)。At the upper end and lower end of the reaction wall 21, between the rear flange and the partition wall 12,
The backfill concrete as the backfill support member 20 is filled and cast and solidified, so that the reaction force wall 21 is attached to the partition wall 12 and the backfill support member located at the upper end and the lower end. A space 30 is formed and held between the reaction wall 21 and the partition wall 12 in a portion sandwiched by the upper and lower portions 20 (see FIG. 3).
【0022】また、この反力壁21は、これを構成する
H形鋼31の下端部が、仕切壁12に隣接して底版コン
クリート18に開口形成された矩形穴32の内部に配置
され、この矩形穴32の底面を基礎として立設するとと
もに、矩形穴32に挿入されたこのH形鋼31の下端部
は、その背面が前記下端部の裏込め支持部材20として
の裏込めコンクリートを介して仕切壁12に密着当接す
るとともに、その前面が、間詰め鋼材33を介して矩形
穴32の内側面に密着当接している。The reaction force wall 21 has a lower end portion of an H-shaped steel 31 constituting the reaction force wall 21 disposed inside a rectangular hole 32 formed in the bottom slab concrete 18 adjacent to the partition wall 12. The lower end of the H-shaped steel 31 inserted into the rectangular hole 32 while being erected on the bottom surface of the rectangular hole 32 has a back surface via backfill concrete as the backfill support member 20 at the lower end. The partition wall 12 is in close contact with the partition wall 12, and the front surface thereof is in close contact with the inner side surface of the rectangular hole 32 via the filling steel 33.
【0023】なお、図2及び図3において、符号34で
示されるものは、支圧架台26を介して伝わる、シール
ド掘進機14の発進時におけるシールドジャッキからの
押圧力を、効率よく反力壁21に伝達するために、支圧
架台26を構成する各梁部材に対応する高さにおいて、
支圧架台26と反力壁21との間に介装させるべく、ブ
ラケット35を介して反力壁21に取り付けられる支圧
架台用腹起こしである。また、図3において符号36で
示されるものは、反力壁21を構成するH形鋼を立設設
置する際に使用する建込用架台である。In FIG. 2 and FIG. 3, what is indicated by reference numeral 34 is a reaction wall which efficiently transmits the pressing force from the shield jack when the shield machine 14 starts moving, which is transmitted through the supporting frame 26. In order to transmit to the support 21, at a height corresponding to each beam member configuring the bearing support base 26,
This is a support stand erection that is attached to the reaction wall 21 via a bracket 35 so as to be interposed between the support stand 26 and the reaction wall 21. In addition, what is indicated by reference numeral 36 in FIG. 3 is a mounting stand used when the H-shaped steel constituting the reaction wall 21 is erected.
【0024】また、この実施例のシールド掘進機発進用
反力受け構造10’を構成する上部反力受け部材として
の梁部材24’は、図3及び図4に示すように、前記上
端部裏込め支持部材20’が取り付けられた部位におい
て、反力壁21に取付けた仕切壁用腹起こし37と、側
壁15に取り付けた側壁用腹起こし38との間に延長架
設されて、仕切壁12を挾んだ反対側の作業空間13’
に設けた反力壁21’から、裏込め支持部材20’及び
仕切壁12と、当該作業空間13内の裏込め支持部材2
0、反力壁21、及び仕切壁用腹起こし37とを介して
伝わる支持反力を、シールド掘進機14’の発進方向と
は反対側の立坑側壁面23’に伝達する。Further, as shown in FIGS. 3 and 4, a beam member 24 'as an upper reaction force receiving member constituting the shield reaction machine starting reaction force receiving structure 10' of this embodiment is provided at the back of the upper end portion. In the portion where the support member 20 ′ is attached, the partition wall 12 is extended between the partition wall ridge 37 attached to the reaction wall 21 and the side wall ridge 38 attached to the side wall 15, and the partition wall 12 is extended. Work space 13 'on the other side of the sandwich
From the reaction wall 21 ′, the backing support member 20 ′ and the partition wall 12, and the backing support member 2 in the working space 13.
The support reaction force transmitted via the reaction wall 0, the reaction wall 21, and the partition wall bellows 37 is transmitted to the shaft wall surface 23 'on the opposite side to the starting direction of the shield machine 14'.
【0025】さらに、この実施例のシールド掘進機発進
用反力受け構造10’を構成する下部反力受け部材とし
ての側壁仕切壁間底版コンクリート25’は、仕切壁1
2を挾んだ反対側の作業空間13’に設けた反力壁2
1’から、裏込め支持部材20’及び仕切壁12と、当
該作業空間13内の裏込め支持部材20、反力壁21、
及び間詰め鋼材33とを介して伝わる支持反力を、シー
ルド掘進機14’の発進方向とは反対側の立坑側壁面2
3’に伝達する(図1参照)。Further, the bottom wall concrete 25 ′ as a lower reaction force receiving member constituting the reaction force receiving structure 10 ′ for starting the shield machine of this embodiment has a partition wall 1.
Reaction wall 2 provided in the work space 13 'on the opposite side across
1 ′, the back-filling support member 20 ′ and the partition wall 12, and the back-filling support member 20, the reaction wall 21 in the working space 13,
And the supporting reaction force transmitted via the filling steel material 33 to the shaft wall 2 on the opposite side to the starting direction of the shield machine 14 '.
3 ′ (see FIG. 1).
【0026】したがって、この実施例のシールド掘進機
発進用反力受け構造10,10’によれば、各シールド
掘進機14,14’の発進時における推進力は、反力壁
21により支圧支持され、この支持力は、裏込め支持部
材20,20’を介するとともに、当該裏込め支持部材
20,20’の取付け部位における仕切壁12の裏部か
ら、各シールド掘進機14,14’が発進する側の立坑
側壁面22,22’とは反対側の立坑側壁面23,2
3’まで延長する上部反力受け部材24,24’及び下
部反力受け部材25,25’を介して伝達され、この反
対側の立坑側壁面23,23’により直接かつ強固に支
持されるとともに、反力壁21は仕切壁12から間隔を
おいて立設配置されているため、仕切壁12には大きな
曲げ応力を生じさせない。すなわち、仕切壁12の変形
を回避し、これによって支持される路面覆工19や山留
支保部材16等の仮設構造物の不安定化を防止するとと
もに、各シールド掘進機14,14’を安定して発進さ
せることができる。Therefore, according to the shield excavator starting reaction force receiving structures 10 and 10 ′ of this embodiment, the propulsive force of each shield excavator 14 and 14 ′ at the time of starting is supported by the reaction force wall 21. This support force is applied to the shield excavators 14 and 14 ′ via the backing support members 20 and 20 ′, and from the back of the partition wall 12 at the attachment site of the backfilling support members 20 and 20 ′. Shaft side walls 23, 2 on the opposite side to the shaft side wall surfaces 22, 22 'on the
It is transmitted via upper reaction force receiving members 24, 24 'and lower reaction force receiving members 25, 25' extending to 3 ', and is directly and firmly supported by the shaft shaft side walls 23, 23' on the opposite side. Since the reaction wall 21 is erected at a distance from the partition wall 12, a large bending stress is not generated on the partition wall 12. That is, the deformation of the partition wall 12 is avoided, thereby preventing the temporary structures such as the road surface lining 19 and the shore retaining member 16 from becoming unstable, and stabilizing the shield excavators 14 and 14 ′. You can start.
【0027】なお、この実施例では、二組の反力受け構
造10,10’を、仕切壁12を挾んで双方に設けるこ
とにより、二台のシールド掘進機14,14’を相反す
る方向に同時に発進させる場合について記載したが、こ
の発明の反力受け構造10,10’をは、単独で設けて
一台のシールド掘進機のみを発進させる場合にも用いる
ことができる。なお、この場合は、仕切壁用腹起こし3
7,37’を仕切壁12に直接取り付けて用いることも
できる。In this embodiment, two sets of reaction receiving structures 10, 10 'are provided on both sides of the partition wall 12, so that the two shield excavators 14, 14' are opposed to each other. Although the case of starting simultaneously has been described, the reaction force receiving structures 10, 10 'of the present invention can also be used in the case where only one shield excavator is started and provided alone. In this case, the partition wall belly 3
7, 37 'can also be used by directly attaching it to the partition wall 12.
【0028】[0028]
【発明の効果】以上詳細に説明したように、この発明の
シールド掘進機発進用反力受け構造は、仕切壁のシール
ド掘進機の発進方向前方側に、前記仕切壁とは所定の間
隔をおいて立設配置されるとともに、その上端部及び下
端部が裏込め支持部材を介して前記仕切壁に添設される
反力壁と、仕切壁のシールド掘進機の発進方向後方側に
おいて、裏込め支持部材が添設される部位の裏部から、
シールド掘進機が発進する側の立坑側壁面とは反対側の
立坑側壁面まで延長して、シールド掘進機の発進時に反
力壁から前記裏込め支持部材を介して伝わる掘進反力を
反対側の立坑側壁面に伝える上部反力受け部材及び下部
反力受け部材とからなるので、内部に仕切壁を有する立
坑からシールド掘進機を発進させる際に、仕切壁に変形
を生じさせることなく、発進のための推進力を強固に支
持してシールド掘進機を安定して発進させることができ
る。As described in detail above, the reaction receiving structure for starting a shield machine according to the present invention has a predetermined distance from the partition wall in front of the shield wall in the starting direction of the shield machine. And the upper end and lower end of the reaction wall are attached to the partition wall via a backing support member. From the back of the part where the support member is attached,
The shield excavator extends to the shaft shaft side surface on the side opposite to the shaft shaft surface on which the shield excavator starts, and excavation reaction force transmitted from the reaction wall via the backfilling support member from the reaction wall at the start of the shield excavator on the opposite side Since it consists of an upper reaction force receiving member and a lower reaction force receiving member to be transmitted to the shaft side wall surface, when starting the shield machine from a shaft having a partition wall inside, the starting wall is not deformed without causing deformation of the partition wall. And the shield excavator can be started stably.
【0029】また、このシールド掘進機発進用反力受け
構造を、仕切壁を挾んで双方に背向して設ければ、相反
する方向に、二台のシールド掘進機を安定した状態で同
時に発進させることができる。Further, if the reaction force receiving structure for starting the shield excavator is provided opposite to each other with the partition wall interposed therebetween, the two shield excavators can simultaneously start in opposite directions in a stable state. Can be done.
【図1】この発明の一実施例にかかるシールド掘進機発
進用反力受け構造の構成を示す側断面図である。FIG. 1 is a side sectional view showing the configuration of a shield excavator starting reaction force receiving structure according to an embodiment of the present invention.
【図2】反力壁の取付け状況を示す正面図である。FIG. 2 is a front view showing a mounting state of a reaction wall.
【図3】反力壁及び上部及び下部の反力受け部材の取付
け状況を示す側面図である。FIG. 3 is a side view showing a mounting state of a reaction wall and upper and lower reaction force receiving members.
【図4】上部反力受け部材として梁部材の取付け状況を
示す平面図である。FIG. 4 is a plan view showing a mounting state of a beam member as an upper reaction force receiving member.
10,10’ シールド掘進機発進用反力受け構造 11 立坑 12 仕切壁 14,14’シールド掘進機 15 側壁 16 山留支保部材 19 路面覆工 20,20’ 裏込め支持部材 21,21’ 反力壁 22,22’ 立坑側壁面 23,23’ 立坑側壁面 24,24’ 梁部材(上部反力受け部材) 25,25’ 側壁仕切壁間底版コンクリート(下部反
力受け部材)10, 10 'Shield excavator starting reaction force receiving structure 11 Vertical shaft 12 Partition wall 14, 14' Shield excavator 15 Side wall 16 Mountain retaining member 19 Road surface lining 20, 20 'Backing support member 21, 21' Reaction force Wall 22, 22 'Vertical shaft side wall 23, 23' Vertical shaft side wall 24, 24 'Beam member (upper reaction receiving member) 25, 25' Bottom concrete between side wall partition walls (lower reaction receiving member)
Claims (2)
掘進機を発進させるためのシールド掘進機発進用反力受
け構造であって、 前記仕切壁のシールド掘進機の発進方向前方側に、前記
仕切壁とは所定の間隔をおいて立設配置されるととも
に、その上端部及び下端部が裏込め支持部材を介して前
記仕切壁に添設される反力壁と、前記仕切壁のシールド
掘進機の発進方向後方側において、前記裏込め支持部材
が添設される部位の裏部から、前記シールド掘進機が発
進する側の立坑側壁面とは反対側の立坑側壁面まで延長
して、前記シールド掘進機の発進時に前記反力壁から前
記裏込め支持部材を介して伝わる掘進反力を前記反対側
の立坑側壁面に伝える上部反力受け部材及び下部反力受
け部材とからなることを特徴とするシールド掘進機発進
用反力受け構造。1. A reaction force receiving structure for starting a shield machine from a shaft having a partition wall therein, the reaction force receiving structure for starting a shield machine. A reaction wall which is arranged upright at a predetermined distance from the wall and whose upper end and lower end are attached to the partition via a back-filling support member, and a shield excavator for the partition On the rear side in the starting direction of the shield excavator, the backing support member is extended from the back side of the portion attached thereto to the shaft wall side opposite to the shaft wall on the side where the shield machine starts. An upper reaction force receiving member and a lower reaction force receiving member for transmitting an excavation reaction force transmitted from the reaction wall via the backfilling support member to the opposite shaft wall when the excavator starts. To start a shield excavator Force receiving structure.
進用反力受け構造を、前記仕切壁を挾んで双方に背向し
て設け、相反する方向に、二台のシールド掘進機を同時
に発進可能とすることを特徴とするシールド掘進機発進
用反力受け構造。2. The reaction receiving structure for starting a shield machine according to claim 1 is provided to face both sides of the partition wall, and two shield machines can be simultaneously operated in opposite directions. A reaction receiving structure for starting a shield excavator, which can be started.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32573294A JP2897666B2 (en) | 1994-12-27 | 1994-12-27 | Reaction receiving structure for starting a shield machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32573294A JP2897666B2 (en) | 1994-12-27 | 1994-12-27 | Reaction receiving structure for starting a shield machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08184293A JPH08184293A (en) | 1996-07-16 |
JP2897666B2 true JP2897666B2 (en) | 1999-05-31 |
Family
ID=18180060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32573294A Expired - Lifetime JP2897666B2 (en) | 1994-12-27 | 1994-12-27 | Reaction receiving structure for starting a shield machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2897666B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110529129B (en) * | 2019-10-09 | 2024-07-12 | 中建八局轨道交通建设有限公司 | Shield launching counter-force supporting device and counter-force supporting method for narrow space |
-
1994
- 1994-12-27 JP JP32573294A patent/JP2897666B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH08184293A (en) | 1996-07-16 |
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