JPH035600A - Method and device for constructing branch and connection part of shield tunnel and its segment - Google Patents
Method and device for constructing branch and connection part of shield tunnel and its segmentInfo
- Publication number
- JPH035600A JPH035600A JP1138368A JP13836889A JPH035600A JP H035600 A JPH035600 A JP H035600A JP 1138368 A JP1138368 A JP 1138368A JP 13836889 A JP13836889 A JP 13836889A JP H035600 A JPH035600 A JP H035600A
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- shield
- branching
- segment
- partition wall
- 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 19
- 238000010276 construction Methods 0.000 claims abstract description 43
- 238000005192 partition Methods 0.000 claims description 28
- 238000009412 basement excavation Methods 0.000 claims description 10
- 230000005641 tunneling Effects 0.000 claims description 7
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000007710 freezing Methods 0.000 abstract description 4
- 239000004570 mortar (masonry) Substances 0.000 abstract description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract 2
- 238000000638 solvent extraction Methods 0.000 abstract 2
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000000725 suspension Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 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〕
この発明はシールド工法によって地下道路のインターチ
ェンジの分岐、合流部分、地下水路の合流部分或いは地
下鉄の分岐部分等を建設する場合に実施されるシールド
トンネルの分岐・接合部の施工方法及びその施工法に於
いて使用する装置及び分岐・接合部に使用されるセグメ
ントに関するものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a shield construction method used when constructing a branch or confluence section of an underground road interchange, a confluence section of an underground waterway, or a branch section of a subway. The present invention relates to a method for constructing a tunnel branch/junction, a device used in the construction method, and a segment used for the branch/junction.
〔従来技術とこの発明が解決しようとする課題〕従来シ
ールドトンネルの分岐・接合部分の施工には、所謂オー
プンカット工法と呼ばれる方法が用いられてきた。[Prior Art and Problems to be Solved by the Present Invention] Conventionally, a method called the so-called open cut method has been used to construct the branching and joining portions of shield tunnels.
これはトンネルの形状に合わせて土留めを行い、この内
部を地上から掘削、構造物を構築後埋め戻すもので、浅
い場合には、経済的な方法であるが、深くなるに伴って
施工が困難になる。This method involves earth retaining to match the shape of the tunnel, excavating the inside from the ground, and backfilling after constructing the structure. This is an economical method for shallow tunnels, but becomes more difficult as the tunnel gets deeper. It becomes difficult.
深くなる場合は、立坑とトンネルとを組み合わせるもの
があるが、序々に分岐するようなインターチェンジ等で
は立て坑が大きくなり経済的でない。For deeper tunnels, there is a method that combines a vertical shaft and a tunnel, but for interchanges that branch out gradually, the vertical shaft becomes large and is not economical.
また、地盤改良などを併用しＮＡＴＭ工法で処理するも
のもあるが、施工深度が大きくなる場合は信頬性の面で
地盤が余程安定していないと採用できない。In addition, there are cases where the NATM method is used in conjunction with ground improvement, but if the construction depth is large, it cannot be used unless the ground is very stable in terms of reliability.
更に、２本の円形断面のトンネルを分岐・接合部に於い
て、可能な限り近接させて構築し、しかる後、分岐・接
合部分のセグメントの一部を取り外すことにより、分岐
・接合部を構築する方法も行われているが、かかる方法
によるとセグメントの一部を取り外したときに地山が大
きく露出し、この露出部の地山を自立させるために、大
規模な凍結工法や薬液注入工法等の地盤改良を必要とし
、工費が大幅に嵩むの免れないものである。Furthermore, two tunnels with circular cross sections are constructed as close as possible at the branch/junction, and then a portion of the segment at the branch/junction is removed to construct the branch/junction. However, with this method, a large amount of the ground is exposed when a part of the segment is removed, and in order to make the exposed part of the ground independent, large-scale freezing methods and chemical injection methods are required. This requires ground improvement such as, etc., which inevitably increases the construction cost considerably.
この発明は前記従来の問題点を解決するために開発した
もので、その目的とする処は、地盤改良の施工範囲が低
減でき、補助工法を必要とせず、施工性、経済性、更に
施工時の安全性が向上できるシールドトンネルの分岐・
接合部の施工方法、その装置及びそのセグメントを提供
することを目的とするものである。This invention was developed in order to solve the above-mentioned conventional problems.The purpose of this invention is to reduce the construction area of ground improvement, eliminate the need for auxiliary construction methods, improve workability, economic efficiency, and improve construction time. Shield tunnel branching and
The object of the present invention is to provide a method for constructing a joint, an apparatus for the construction, and a segment for the construction.
この発明の第１の施工方法は、先行シールドトンネルの
掘進に従って覆工体を設置するに際して前記シールドト
ンネルの分岐・接合部分に仮設仕切壁を設置し、次いで
後続シールドトンネルを前記仮設仕切壁に向かって斜め
方向から堀進し、掘進に従って覆工体を設置し、先行シ
ールドトンネルと後続シールドトンネルとを仮設仕切壁
部分で合致させ、仮設仕切壁を撤去してシールドトンネ
ルの分岐・接合部を構築する方法であり、この施工方法
には、シールドフレーム本体に回転フレームを支持させ
、回転フレームの後面から一対のアームを張出し、その
アームに対して１次伸縮ガイドロッドを摺動自在とし、
１次伸縮ガイドロッドの一端には一対の支持アームを固
定し、２次伸縮ガイドロッドを支持アームに対して摺動
自在とし、その２次伸縮ダイトロッドの一端に吊ビーム
を設けて、吊ビームにより仮設仕切壁を保持させるよう
にした構成の装置を使用する。A first construction method of the present invention is to install a temporary partition wall at a branch/junction part of the shield tunnel when installing the lining according to the excavation of the preceding shield tunnel, and then direct the subsequent shield tunnel toward the temporary partition wall. excavate from a diagonal direction, install the lining as the excavation progresses, match the preceding shield tunnel and the succeeding shield tunnel at the temporary partition wall, remove the temporary partition wall, and construct the branch/junction of the shield tunnel. This construction method involves supporting a rotating frame on the shield frame main body, protruding a pair of arms from the rear surface of the rotating frame, and making a primary telescopic guide rod slidable with respect to the arms.
A pair of support arms is fixed to one end of the primary telescoping guide rod, the secondary telescoping guide rod is slidable relative to the support arm, and a suspension beam is provided at one end of the secondary telescoping guide rod. A device configured to hold the temporary partition wall is used.
又、この発明の第２の施工方法は、シールドトンネルに
於ける先行トンネルと後続トンネルとの分岐・接合部に
於いて、前記先行トンネルの分岐・接合区間に、円周の
一部に凹部を有する欠円断面状のセグメントによってト
ンネルの１次覆工を行ない、次いで後続トンネルのシー
ルド掘進基を前記セグメントの凹部に嵌合した状態で掘
進して後続トンネルを構築したのち、同構築トンネルル
と前記先行トンネルとの隔壁を除去し、同両トンネルを
連結する施工方法であり、この施工方法には円周部の一
部に後続トンネル掘進用シールド掘進機が嵌入する凹部
を有する欠円断面形状に形成されたシールドトンネルの
分岐・接合部用セグメントを使用する。Further, a second construction method of the present invention is to form a recess in a part of the circumference in the branching/joining section of the preceding tunnel at the branching/junction section between the preceding tunnel and the succeeding tunnel. The primary lining of the tunnel is carried out using the segment having an occluded cross-section, and then the shield excavation base of the subsequent tunnel is fitted into the recess of the segment to construct the subsequent tunnel. This is a construction method in which the partition wall between the preceding tunnel and the preceding tunnel is removed and the two tunnels are connected.This construction method involves a construction method in which a part of the circumference has a recess into which a shield excavator for excavating the succeeding tunnel is fitted. Use the branch/joint segments of the shield tunnel formed in the above.
〔実施例〕
この発明に係る第１の施工方法について図示する実施例
に基づいて説明する（第１図〜第７図参照）。[Example] The first construction method according to the present invention will be explained based on the illustrated example (see Figs. 1 to 7).
この施工方法は第１図乃至第５図に示す通りであり、先
行トンネルＡの掘進に従ってセグメントの組立によって
覆工体ｌを設置する。This construction method is as shown in FIGS. 1 to 5, and the lining L is installed by assembling segments as the preceding tunnel A is excavated.
その際接合部分には平板状セグメントを組立て、仮設仕
切壁２を設置する。なお、仮設仕切壁２の裏側には低強
度モルタル、発泡スチロール等の裏込め３を施し、その
外側に裏込め注入４を施す。At that time, flat plate segments are assembled at the joint portion, and a temporary partition wall 2 is installed. Note that backfilling 3 of low-strength mortar, foamed polystyrene, etc. is applied to the back side of temporary partition wall 2, and backfilling injection 4 is applied to the outside thereof.
次いで後続トンネルＢを仮設仕切壁２に向かって斜め方
向から掘進し、先行トンネルＡと後続トンネルＢとの合
致部分の外周には注入管、凍結管５を挿入して地盤改良
を施す。Next, the succeeding tunnel B is excavated diagonally toward the temporary partition wall 2, and an injection pipe and freezing pipe 5 are inserted into the outer periphery of the matching portion of the preceding tunnel A and the succeeding tunnel B to improve the ground.
次いで仮設仕切壁を撤去して両トンネルを接合し、必要
により中柱６を挿入し、あるいは両トンネルに跨って覆
工体１を補強するための桁７を配置する。Next, the temporary partition wall is removed, the two tunnels are joined together, and if necessary, a center column 6 is inserted, or a girder 7 is placed across both tunnels to reinforce the lining body 1.
前記仮設仕切壁２をセグメントによって組立てる装置は
第６図、第７図に示される。そしてシールドフレーム本
体８に、回転フレーム９を回転できるように支持しであ
る。回転フレームはシールドに本体に授けられた旋回モ
ーター１０により旋回させる。An apparatus for assembling the temporary partition wall 2 using segments is shown in FIGS. 6 and 7. A rotating frame 9 is rotatably supported on the shield frame main body 8. The rotating frame is rotated by a rotating motor 10 attached to the main body of the shield.
回転フレームの後面から左右２本のアーム１）を張出し
、１次伸縮ガイドロッド１２を摺動自在の構造としであ
る。Two left and right arms 1) extend from the rear surface of the rotating frame, and a primary telescopic guide rod 12 is structured to be slidable.
１次伸縮ガイドロッド１２の一端には支持アーム１３を
固定し、アーム１）と支持アーム１３間には１次伸縮ジ
ヤツキ１４を設ける。A support arm 13 is fixed to one end of the primary telescoping guide rod 12, and a primary telescoping jack 14 is provided between the arm 1) and the support arm 13.
支持アーム１３は、セグメント組立位置に張出し、仮設
仕切壁組立時に既設セグメントに干渉しないような形状
とする。The support arm 13 extends to the segment assembly position and is shaped so as not to interfere with the existing segments when assembling the temporary partition wall.
支持アーム１３の後端は、２次伸縮ガイドロッド１５が
摺動できる構造としである。The rear end of the support arm 13 has a structure on which a secondary telescopic guide rod 15 can slide.
左右の２次伸縮ガイドロフトの下端の吊ビーム１６の両
端を固定する。Both ends of the suspension beams 16 at the lower ends of the left and right secondary telescopic guide lofts are fixed.
支持アームと吊ビーム間には２次伸縮ジヤツキ１５を設
ける。A secondary telescoping jack 15 is provided between the support arm and the hanging beam.
仮設間仕切壁２を保持して組立てる吊ビーム１６と、２
次伸縮ガイドロッド１５は仮設仕切壁２組立時、既設セ
グメントの覆工体１に干渉しないようにしである。A suspension beam 16 for holding and assembling the temporary partition wall 2;
The next telescopic guide rod 15 is designed so as not to interfere with the lining body 1 of the existing segment when the temporary partition wall 2 is assembled.
続いて、この発明の第２の施工方法を図示する実施例に
基づいて説明する（第８図〜第２０図参照）。Next, a second construction method of the present invention will be explained based on an illustrated embodiment (see FIGS. 8 to 20).
第８図は第２の施工方法が適用されるシールドトンネル
の分岐・接合区間を示す平面図、第９図及び第１０図は
第８図の■−ｎ線及び■−■線に沿って裁断した断面図
で、先行トンネルの分岐・接合区間において、円周部の
一部に凹部１８が設けられた欠円断面形状のコンクリー
ト又は鋼製のセグメント１９で一次覆工を行い、この凹
部１８にはトンネル用のシールド掘進機による掘進と同
時に、同セグメント１９に設けた注入口を介して埋め戻
しを行い、後続トンネルＢの掘進用シールド掘進機Ｃは
同凹部の埋め戻し部分２０に嵌合する形で掘進を行い、
後続トンネルＢを構築する。Figure 8 is a plan view showing the branching/joining section of the shield tunnel to which the second construction method is applied, and Figures 9 and 10 are cut along the ■-n line and ■-■ line in Figure 8. In this cross-sectional view, in the branching/joining section of the preceding tunnel, a primary lining is performed using a concrete or steel segment 19 with an occluded circular cross-sectional shape with a recess 18 provided in a part of the circumference, and this recess 18 is Simultaneously with the excavation by the tunnel shield excavator, backfilling is performed through the injection port provided in the same segment 19, and the shield excavator C for excavating the subsequent tunnel B fits into the backfill part 20 of the same recess. excavation in the form of
Build a subsequent tunnel B.
第１）図は、後続トンネルＢの掘進用シールド掘進機Ｃ
が先行トンネルＡに接合した後、後続トンネルＢの掘進
を継続して、先行トンネルＡから離隔していく場合を示
し、この場合にも本発明が適用される。Figure 1) shows shield excavator C for excavating subsequent tunnel B.
A case is shown in which, after joining the preceding tunnel A, the subsequent tunnel B continues to be excavated and separates from the preceding tunnel A, and the present invention is also applied to this case.
第１２図は前記シールドトンネルの分岐・接合区間に使
用されるセグメント１９を示し、円周部に於ける後続ト
ンネルＢに対向する部分に凹部１８が形成されている。FIG. 12 shows a segment 19 used in the branching/joining section of the shield tunnel, in which a recess 18 is formed in the circumferential portion facing the subsequent tunnel B.
尚、図中、番号２１はセグメント継手用ボルト孔である
。In addition, in the figure, number 21 is a bolt hole for a segment joint.
第１３図は先行トンネルＡに於ける円形断面の本体部と
、前記分岐・接合部との境界に配設されるセグメント２
２を示し、前記欠円断面形状のセグメント１９に於ける
凹部１８に対応する部分に、妻型枠２３が設置されてい
る。Figure 13 shows a segment 2 disposed at the boundary between the main body portion with a circular cross section in the preceding tunnel A and the branch/junction portion.
2, a gable formwork 23 is installed in a portion corresponding to the recess 18 in the segment 19 having the occluded cross-sectional shape.
第１７図乃至第２０図は先行トンネルＡの施工工程を示
し、先行トンネル用シールド掘進機りによって先行トン
ネルＡを掘進し、シールド掘進機のエレクタ一部に於い
て単円断面トンネルの構築に使用される公知のセグメン
ト２４によって覆工する（第１７図参照）。Figures 17 to 20 show the construction process of the preceding tunnel A, in which the preceding tunnel A is excavated by a shield tunneling machine for the preceding tunnel, and a part of the erector of the shield tunneling machine is used to construct a tunnel with a single circular cross section. The lining is performed using a known segment 24 (see FIG. 17).
図中、番号２５はシールドジヤツキ、２６はテールシー
ル、２７はスキンプレートである。In the figure, numeral 25 is a shield jack, 26 is a tail seal, and 27 is a skin plate.
しかして、前記シールド掘進機りがトンネル分岐・接合
開始点に到達すると、第１３図に示すセグメント２２を
組み立てると同時に、シールド掘進機りに、前記凹部の
地山と本トンネル坑内とを隔離する為の同口部分に嵌入
すべき隔離２８及びテールシール２９を新たに設置し、
更に、必要に応じてシールドジヤツキ３０を増設する（
第１４図、第１５図及び第１８図参照）。When the shield tunneling machine reaches the tunnel branching/joining starting point, the segments 22 shown in FIG. A new isolation 28 and tail seal 29 that should be fitted into the same opening part for
Furthermore, add a shield jack 30 as necessary (
(See Figures 14, 15 and 18).
この際、前記凹部部分の地山は一時的に露出する為、必
要に応じて同部分の地山防護工を実施する。At this time, the ground in the recessed portion will be temporarily exposed, so if necessary, the ground protection work in the same area will be carried out.
次いで、前記のように隔壁２８及びテールシール２９が
増設されたシールド掘進機りによってトンネルを掘進し
、第１２図に示す如きセグメント１９を組み立てる。Next, a tunnel is excavated by the shield tunneling machine to which the bulkhead 28 and tail seal 29 are added as described above, and the segments 19 as shown in FIG. 12 are assembled.
この際、発生する前記凹部部分の空間には、セグメント
に予め設けられた注入口より掘削土やソイルセメント
によって埋め戻す（第１９図参照）。At this time, the space in the concave portion that occurs is backfilled with excavated soil or soil cement through an injection port previously provided in the segment (see Figure 19).
かくして、シールドトンネルの分岐・接合部の掘進が終
了すると、第１８図とは逆の工程でシールド掘進機りを
改造前の状態に戻すと共に、第１３図に示すセグメント
２２と同一機能を有するセグメントで覆工を行い、トン
ネル断面を単円形に戻す。In this way, when the excavation of the branch/joint part of the shield tunnel is completed, the shield tunneling machine is returned to its pre-modification state in the reverse process of FIG. 18, and a segment having the same function as the segment 22 shown in FIG. 13 is created. Lining is carried out to restore the tunnel cross section to a single circular shape.
以下、前記第１７図に示した場合と同一工程を繰り返し
、所定位置までシールド掘進機による掘進をおこなう。Thereafter, the same steps as shown in FIG. 17 are repeated, and the shield excavator excavates to a predetermined position.
前記のように先行トンネルＡの分岐・接合区間の構築が
完了すると、後続トンネルＢのシールド掘進機Ｃを、前
記凹部の埋め戻し部分２０に嵌合する形で、後続トンネ
ルＢの掘進を行う。When the construction of the branching/joining section of the preceding tunnel A is completed as described above, the shield excavation machine C of the succeeding tunnel B is fitted into the backfilled portion 20 of the recess, and the succeeding tunnel B is excavated.
このように先行トンネルＡと後続トンネルＢとを接合し
た後、第１６図に示すように両トンネルの隔壁を取り除
き、同両トンネル内部及び両トンネル接合部の構築を行
い、トンネルの分岐・接合区間の構造体を構築するもの
である。After joining the preceding tunnel A and the succeeding tunnel B in this way, as shown in Fig. 16, the partition walls of both tunnels are removed, the inside of both tunnels and the joint part of both tunnels are constructed, and the branching/joining section of the tunnel is constructed. This is to construct a structure.
本方式は両トンネルが同一水平面上で接合する他に、第
２１図に示すように同一鉛直面上で接合する方法も同様
に考える。In addition to connecting both tunnels on the same horizontal plane, this method also considers a method in which both tunnels are connected on the same vertical plane as shown in FIG.
この発明は以上の構成からなるので、以下の効果を有す
る。Since the present invention has the above configuration, it has the following effects.
■ 先行シールドの覆工体の側部に仮設仕切壁を設け、
この仮設仕切壁部分で後続シールドトンネルを合致させ
るようにしたので、仮設仕切壁を撤去することにより両
トンネルを容易に接続することができる。またその際、
この発明の装置は仮設仕切壁を覆工体を組立てるセグメ
ントと別箇に組立てることができるので施工が容易であ
る。■ A temporary partition wall will be installed on the side of the lining of the preceding shield.
Since the subsequent shield tunnel is made to coincide with this temporary partition wall portion, both tunnels can be easily connected by removing the temporary partition wall. Also, at that time,
The device of the present invention is easy to construct because the temporary partition wall can be assembled separately from the segments for assembling the lining.
■ シールドトンネルの分岐接合部に於いて、先行トン
ネルの分岐・接合区間に円周部の一部に凹部を有する欠
円断面形状のセグメントによってトンネルの一次覆工を
行い、次いで同セグメントの凹部に後続トンネルのシー
ルド掘進機を嵌合せしめた状態で、掘進して後続トンネ
ルを構築しようとしたもので、同後続トンネルが先行ト
ンネルに嵌合した状態で接合され、従って分岐接合区間
の地山防護の為の地盤改良の施工範囲が少なくて隅、露
出部分が少なくなり、工費が著しく節減され、又、前記
分岐・接合区間を構築する場合に地山の露出部分が少な
くなるので、施工時の安全性が向上される。■ At the branch junction of a shield tunnel, the primary lining of the tunnel is performed using a segment with an occluded cross section that has a recess in a part of the circumference in the branch/join section of the preceding tunnel, and then the tunnel is lined in the recess of the same segment. An attempt was made to excavate and construct a subsequent tunnel with the shield excavator of the subsequent tunnel fitted, and the subsequent tunnel was fitted and joined to the preceding tunnel, thus preventing the protection of the ground in the branching and joining section. The construction area for ground improvement for this purpose is small, and there are fewer corners and exposed parts, resulting in a significant reduction in construction costs.Also, when constructing the branching/joining sections, there are fewer exposed parts of the ground, so it is easier to use during construction. Safety is improved.
更に、ルーフシールド工法やパイプルーフ工法、かんざ
し桁圧入工法等の補助工法が不要となり、工費が節減さ
れると共に、工期が短縮される。Furthermore, auxiliary construction methods such as the roof shield construction method, pipe roof construction method, and hairpin girder press-in construction method are no longer necessary, reducing construction costs and shortening the construction period.
請求項第２項記載の発明は先行トンネルシルト掘進機の
シールドトンネル分岐・接合区間の掘進中に、隔壁及び
テールシールを部分的に設置し、前記後続トンネル接合
用の凹部を有する欠円断面形状のトンネルを掘進しうる
用にしたものである。The invention according to claim 2 provides a structure in which a partition wall and a tail seal are partially installed during excavation of a shield tunnel branching/joining section by a preceding tunnel silt excavator, and the cross-sectional shape is an occluded circle having a concave portion for the succeeding tunnel joining. It was designed to be able to dig through tunnels.
請求項第５項記載の発明はセグメントを円周部の一部に
後続トンネルのシールド掘進機が嵌合する凹部を有する
欠円断面形状に形成して、前記シールドトンネル分岐・
接合部の施工が効果的に行われるようにしたものである
。In the invention as set forth in claim 5, the segment is formed in a truncated circular cross-sectional shape having a recess in a part of the circumference into which the shield tunneling machine of the subsequent tunnel fits, and the shield tunnel branching
This allows the construction of joints to be carried out effectively.
第１図乃至第５図はこの発明の第１の施工方法の施工工
程の断面図、第６図、第７図は当該施工方法に使用する
装置の側面図と正面図、第８図はこの発明の第２の施工
方法に係る分岐・接合部近傍の施工状況を示す平面図、
第９図、第１０図はそれぞれ第８図に於けるＩ−Ｉ線、
ｎ−ｎ線断面図、第１）図は他の実施例を示す平面図、
第１２図及び第１３図はそれぞれ前記分岐・接合部に使
用されるセグメントの斜視図、第１４図はトンネル用シ
ールド掘進機の埋設部分を示す横断平面図、第１５図は
第１４図に於けるＩＩＩ−ＩＩＩ線断面図、第１６図は
第２の施工方法によって施工されたシールドトンネル分
岐・接合部の縦断面図、第１７図乃至第２０図は先行ト
ンネルの施工工程を示す縦断面図、第２１図はトンネル
どうしを鉛直面上で接合した状態を示すトンネル分岐部
の側面図、第２２図、第２３図及び第２４図は第２１図
に於けるＩＶ−ＩＶ線、Ｖ−Ｖ線及びＶＩ−ＶＩ線断面
図である。
１・・・覆工体、２・・・仮設仕切壁、３・・・裏込め
、４・・・裏込め注入、５・・・注入管、凍結管、６・
・・中柱、７・・・桁、８・・・シールドフレーム本体
、９・・・フレーム、１０・・・モーター １）・・・
アーム、１２・・弓次伸縮ガイドロッド、
１３・・・支持アーム、Ｉ４・・・１次伸縮ジヤツキ、
１５・・・２次伸縮ガイドロッド、１６・・・吊ビーム
、１７・・・桁、１８・・・セグメントの凹部、１９・
・・セグメント、２０・・・凹部埋め戻し部分、２１・
・・セグメント継手用ボルト、
２２・・・セグメント、２３・・・妻型枠、２４・・・
セグメント、２５・・・シールドジヤツキ、２６・・・
テールシール、２７・・・スキンプレート、２８・・・
隔壁、２９・・・テールシール、３０・・・シールドジ
ヤツキ、３１・・・構造体。
Ａ・・・先行トンネル、Ｂ・・・後続トンネル、Ｃ・・
・後続トンネルのシールド掘進機、Ｄ・・・先行トンネ
ルのシールド掘進機。
第４図
第５図
第
６
図
第
図
第
８
図
第
２
図
第
１
図
第
μ
図
第
５
図Figures 1 to 5 are cross-sectional views of the construction process of the first construction method of this invention, Figures 6 and 7 are side and front views of the equipment used in the construction method, and Figure 8 is the A plan view showing the construction situation near the branch/joint part according to the second construction method of the invention,
Figures 9 and 10 are the I-I line in Figure 8, respectively.
A sectional view taken along the line nn, the first) is a plan view showing another embodiment,
12 and 13 are perspective views of the segments used for the branching/joining parts, respectively, FIG. 14 is a cross-sectional plan view showing the buried part of the tunnel shield excavator, and FIG. 15 is the same as that shown in FIG. Figure 16 is a vertical cross-sectional view of the shield tunnel branch/junction constructed by the second construction method, and Figures 17 to 20 are vertical cross-sectional views showing the construction process of the preceding tunnel. , FIG. 21 is a side view of the tunnel branch section showing a state in which tunnels are joined on a vertical plane, and FIGS. 22, 23, and 24 are taken along lines IV-IV and V-V in FIG. 21. FIG. 1... Lining body, 2... Temporary partition wall, 3... Backfilling, 4... Backfilling injection, 5... Injection pipe, freezing pipe, 6.
... Middle pillar, 7... Girder, 8... Shield frame body, 9... Frame, 10... Motor 1)...
Arm, 12... Yuji telescopic guide rod, 13... Support arm, I4... Primary telescopic jack,
15... Secondary telescopic guide rod, 16... Suspended beam, 17... Girder, 18... Segment recess, 19...
... Segment, 20... Recessed part, 21.
... Segment joint bolt, 22... Segment, 23... End formwork, 24...
Segment, 25... Shield jacket, 26...
Tail seal, 27...Skin plate, 28...
Partition wall, 29...Tail seal, 30...Shield jack, 31...Structure. A...preceding tunnel, B...following tunnel, C...
・Shield excavator for the following tunnel, D...Shield excavator for the preceding tunnel. Figure 4 Figure 5 Figure 6 Figure 8 Figure 2 Figure 1 Figure μ Figure 5
Claims (5)
置するに際して前記先行シールドトンネルの分岐・接合
部分に仮設仕切壁を設置し、次いで後続シールドトンネ
ルを前記仮設仕切壁に向かって斜め方向から掘進し、掘
進に従って覆工体を設置し、前記先行シルードトンネル
と後続シールドトンネルを仮設仕切壁部分で合致させ、
仮設仕切壁を撤去して接合することを特徴とするシール
ドトンネルの分岐・接合部の施工方法。(1) When installing the lining according to the excavation of the preceding shield tunnel, a temporary partition wall is installed at the branching/junction part of the preceding shield tunnel, and then the succeeding shield tunnel is excavated diagonally toward the temporary partition wall. , installing a lining according to the excavation, and matching the preceding shield tunnel and the succeeding shield tunnel at the temporary partition wall portion;
A construction method for branching and joining parts of a shield tunnel, which is characterized by removing temporary partition walls and joining them.
、回転フレームの後面から一対のアームを張出し、その
アームに対して１次伸縮ガイドロッドを摺動自在とし、
１次伸縮ガイドロッドの一端には一対の支持アームを固
定し、２次伸縮ガイドロッドを支持アームに対して摺動
自在とし、その２次伸縮ガイドロッドの一端に吊ビーム
を設けて、吊ビームにより仮設仕切壁を保持させるよう
にしてあることを特徴とするシールドトンネルの分岐・
接合部の施工方法に使用する装置。(2) A rotary frame is supported by the shield frame main body, a pair of arms are extended from the rear surface of the rotary frame, and a primary telescopic guide rod is slidable with respect to the arms;
A pair of support arms is fixed to one end of the primary telescoping guide rod, the secondary telescoping guide rod is slidable relative to the support arm, and a hanging beam is provided at one end of the secondary telescoping guide rod. Branching of a shield tunnel, characterized in that a temporary partition wall is maintained by
Equipment used in the construction method of joints.
ンネルとの分岐・接合部に於いて、先行トンネルの分岐
・接合区間に、円周の一部に凹部を有する欠円断面状の
セグメントによってトンネルの１次覆工を行ない、次い
で後続トンネルのシールド掘進機を前記セグメントの凹
部に嵌合した状態で掘進して後続トンネルを構築したの
ち、同構築トンネルと前記先行トンネルとの隔壁を除去
し、同両トンネルを連結することを特徴とするシールド
トンネルの分岐・接合部の施工方法。(3) At the branching/junction between the preceding tunnel and the succeeding tunnel in a shield tunnel, the tunnel is formed by a segment with a truncated circular cross-section having a recessed part of the circumference in the branching/junction section of the preceding tunnel. The primary lining is carried out, and then the subsequent tunnel is constructed by digging with the shield excavator of the subsequent tunnel fitted into the recess of the segment, and then the partition wall between the constructed tunnel and the preceding tunnel is removed and the same tunnel is constructed. A construction method for a branch/joint part of a shield tunnel, which is characterized by connecting both tunnels.
行トンネルのシールド掘進機に隔壁及びテールシールを
部分的に設置し、円周の一部に凹部を有する欠円断面形
状のトンネルを掘進する請求項第３項記載のシールドト
ンネルの分岐・接合部の施工方法。(4) While excavating the branching/joining section of the preceding tunnel, partially install bulkheads and tail seals on the shield excavator of the preceding tunnel, and excavate a tunnel with a truncated circular cross section that has a recessed part of the circumference. The method for constructing a branch/joint portion of a shield tunnel according to claim 3.
進機が嵌入する凹部を有する欠円断面形状に形成された
シールドトンネルの分岐・接合部用セグメント。(5) A shield tunnel branching/junction segment formed in a truncated circular cross-sectional shape having a recess in a part of the circumference into which a subsequent tunnel excavating shield tunneling machine is fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1138368A JPH0765455B2 (en) | 1989-05-31 | 1989-05-31 | Construction method for branch / joint of shield tunnel and temporary bulkhead construction device for branch / joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1138368A JPH0765455B2 (en) | 1989-05-31 | 1989-05-31 | Construction method for branch / joint of shield tunnel and temporary bulkhead construction device for branch / joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH035600A true JPH035600A (en) | 1991-01-11 |
| JPH0765455B2 JPH0765455B2 (en) | 1995-07-19 |
Family
ID=15220301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1138368A Expired - Lifetime JPH0765455B2 (en) | 1989-05-31 | 1989-05-31 | Construction method for branch / joint of shield tunnel and temporary bulkhead construction device for branch / joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0765455B2 (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05321594A (en) * | 1992-05-25 | 1993-12-07 | Nippon Concrete Ind Co Ltd | Construction method of side wall used for tunnel widening section |
| JP2003041900A (en) * | 2001-07-27 | 2003-02-13 | Nippon Steel Corp | Segment ring structure |
| JP2004092391A (en) * | 2003-12-26 | 2004-03-25 | Hazama Corp | Tunnel branching structure and construction method for branch tunnel |
| JP2006200317A (en) * | 2005-01-24 | 2006-08-03 | Taisei Corp | Construction method of divergent and confluent section of tunnel |
| JP2007016509A (en) * | 2005-07-08 | 2007-01-25 | Taisei Corp | Joining method of juxtaposed tunnels |
| JP2007077637A (en) * | 2005-09-13 | 2007-03-29 | Okumura Corp | Branch junction part construction method for shield tunnel |
| JP2007077635A (en) * | 2005-09-13 | 2007-03-29 | Okumura Corp | Branch junction part construction method for shield tunnel |
| JP2007191895A (en) * | 2006-01-18 | 2007-08-02 | Taisei Corp | Composite body of segment caisson or propelling caisson and air mortar block, and method of constructing tunnel having multi-continuous cross section |
| JP2007321537A (en) * | 2006-06-05 | 2007-12-13 | Shimizu Corp | Non-open-pit construction method for tunnel branch confluent |
| JP2008014125A (en) * | 2006-06-09 | 2008-01-24 | Maeda Corp | Branch junction part construction method for shield tunnel |
| JP2008019663A (en) * | 2006-07-14 | 2008-01-31 | Maeda Corp | Tunnel construction method |
| JP2008144485A (en) * | 2006-12-11 | 2008-06-26 | Nippon Steel Corp | Tunnel structure of branch/merging section and construction method |
| JP2009062675A (en) * | 2007-09-04 | 2009-03-26 | Kajima Corp | Tunnel junction part and construction method for tunnel junction part |
| JP2015031112A (en) * | 2013-08-06 | 2015-02-16 | 大成建設株式会社 | Joint segment, joint structure and joint method of shield tunnel |
| US9388690B2 (en) | 2012-07-09 | 2016-07-12 | Komatsu Ltd. | Tunnel excavation method |
| US9617853B2 (en) | 2012-07-09 | 2017-04-11 | Komatsu Ltd. | Auxiliary tunneling apparatus |
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| JP5142808B2 (en) * | 2008-05-07 | 2013-02-13 | 新日鐵住金株式会社 | Heterogeneous tunnel junction structure and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6466394A (en) * | 1987-09-07 | 1989-03-13 | Ohbayashi Corp | Method of constructing double track type tunnel |
-
1989
- 1989-05-31 JP JP1138368A patent/JPH0765455B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6466394A (en) * | 1987-09-07 | 1989-03-13 | Ohbayashi Corp | Method of constructing double track type tunnel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05321594A (en) * | 1992-05-25 | 1993-12-07 | Nippon Concrete Ind Co Ltd | Construction method of side wall used for tunnel widening section |
| JP2003041900A (en) * | 2001-07-27 | 2003-02-13 | Nippon Steel Corp | Segment ring structure |
| JP2004092391A (en) * | 2003-12-26 | 2004-03-25 | Hazama Corp | Tunnel branching structure and construction method for branch tunnel |
| JP4593913B2 (en) * | 2003-12-26 | 2010-12-08 | 株式会社間組 | How to build a branch tunnel |
| JP4485373B2 (en) * | 2005-01-24 | 2010-06-23 | 大成建設株式会社 | Construction method of tunnel junction |
| JP2006200317A (en) * | 2005-01-24 | 2006-08-03 | Taisei Corp | Construction method of divergent and confluent section of tunnel |
| JP2007016509A (en) * | 2005-07-08 | 2007-01-25 | Taisei Corp | Joining method of juxtaposed tunnels |
| JP4534069B2 (en) * | 2005-07-08 | 2010-09-01 | 大成建設株式会社 | Parallel tunnel joining method |
| JP4587919B2 (en) * | 2005-09-13 | 2010-11-24 | 株式会社奥村組 | How to construct a junction and junction of shield tunnel |
| JP2007077635A (en) * | 2005-09-13 | 2007-03-29 | Okumura Corp | Branch junction part construction method for shield tunnel |
| JP2007077637A (en) * | 2005-09-13 | 2007-03-29 | Okumura Corp | Branch junction part construction method for shield tunnel |
| JP4587918B2 (en) * | 2005-09-13 | 2010-11-24 | 株式会社奥村組 | How to construct a junction and junction of shield tunnel |
| JP4634308B2 (en) * | 2006-01-18 | 2011-02-16 | 大成建設株式会社 | Segment box or propulsion box and air mortar block composite, and construction method for multiple section tunnel |
| JP2007191895A (en) * | 2006-01-18 | 2007-08-02 | Taisei Corp | Composite body of segment caisson or propelling caisson and air mortar block, and method of constructing tunnel having multi-continuous cross section |
| JP2007321537A (en) * | 2006-06-05 | 2007-12-13 | Shimizu Corp | Non-open-pit construction method for tunnel branch confluent |
| JP4730608B2 (en) * | 2006-06-05 | 2011-07-20 | 清水建設株式会社 | segment |
| JP2008014125A (en) * | 2006-06-09 | 2008-01-24 | Maeda Corp | Branch junction part construction method for shield tunnel |
| JP2008019663A (en) * | 2006-07-14 | 2008-01-31 | Maeda Corp | Tunnel construction method |
| JP2008144485A (en) * | 2006-12-11 | 2008-06-26 | Nippon Steel Corp | Tunnel structure of branch/merging section and construction method |
| JP2009062675A (en) * | 2007-09-04 | 2009-03-26 | Kajima Corp | Tunnel junction part and construction method for tunnel junction part |
| US9388690B2 (en) | 2012-07-09 | 2016-07-12 | Komatsu Ltd. | Tunnel excavation method |
| US9617853B2 (en) | 2012-07-09 | 2017-04-11 | Komatsu Ltd. | Auxiliary tunneling apparatus |
| JP2015031112A (en) * | 2013-08-06 | 2015-02-16 | 大成建設株式会社 | Joint segment, joint structure and joint method of shield tunnel |
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|---|---|
| JPH0765455B2 (en) | 1995-07-19 |
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