JP2012202041A - Segment installation method in curved section of shield method and segment - Google Patents

Segment installation method in curved section of shield method and segment Download PDF

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JP2012202041A
JP2012202041A JP2011065199A JP2011065199A JP2012202041A JP 2012202041 A JP2012202041 A JP 2012202041A JP 2011065199 A JP2011065199 A JP 2011065199A JP 2011065199 A JP2011065199 A JP 2011065199A JP 2012202041 A JP2012202041 A JP 2012202041A
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segment
peripheral side
movable member
outer peripheral
contact member
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JP5693314B2 (en
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Ikuo Oe
郁夫 大江
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Nishimatsu Construction Co Ltd
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Nishimatsu Construction Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To surely install a segment in a curved section of a shield method.SOLUTION: A contact member 5 capable of protruding and abutting on a natural ground G is prepared on the outer peripheral side of a segment. In a curved section of a shield method, the contact member 5 is protruded to the outer peripheral side of the segment and the segment is installed on the curved section while the contact member 5 abuts on the natural ground G. Concretely, a movable member 4 capable of protruding from the inner peripheral side to the outer peripheral side of the segment is prepared and a protruding end of the movable member 4 is provided with the contact member 5. Then, the movable member 4 is protruded from the inner peripheral side to the outer peripheral side of the segment and the contact member 5 provided at the protruding end of the movable member 4 is made to abut on the natural ground G.

Description

本発明は、シールド工法の曲線部におけるセグメントの設置方法と、それに用いるセグメントに関する。   The present invention relates to a method for installing a segment in a curved portion of a shield method and a segment used therefor.

シールド工法では、直線だけでなく曲線施工も行う。
そして、曲線施工では、コピーカッター等で余掘りを行うため、裏込め材がシールド機全面に回り込まないように袋付きセグメントを用いることがある（例えば特許文献１、２参照）。 In the shield method, not only straight lines but also curved lines are constructed.
And in curve construction, since a dug is performed with a copy cutter etc., a segment with a bag may be used so that a backfilling material may not wrap around the shield machine whole surface (for example, refer to patent documents 1 and 2).

特許第３０４６５９０号公報Japanese Patent No. 3046590 特開２００６−２９９７２３号公報JP 2006-299723 A

しかし、特許文献１、２のような袋付きセグメントは、例えば図４に示すように、計画余掘り量に余裕高を加えた大きめのサイズで作成することから、施工中に袋Ｂに裏込め材を注入すると、袋Ｂが膨張して地山を押すことで、矢印で示されるように、セグメントＳが移動しやすく、線形確保、シールド機のテールブラシの保護等の観点から問題が生じることがある。   However, as shown in Fig. 4, for example, as shown in Fig. 4, the segment with bag like Patent Documents 1 and 2 is created with a larger size by adding a margin to the planned surplus amount. When the material is injected, the bag B expands and pushes the ground, so that as shown by the arrow, the segment S is easy to move, causing problems in terms of securing the alignment, protecting the tail brush of the shield machine, etc. There is.

本発明の課題は、シールド工法の曲線部において、セグメントを確実に設置することである。   The subject of this invention is installing a segment reliably in the curve part of a shield method.

以上の課題を解決するため、請求項１に記載の発明は、シールド工法の曲線部において、セグメントの外周側に当接部材を突出させて、地山に前記当接部材を当接させた状態で前記セグメントを前記曲線部に設置することを特徴とする。   In order to solve the above-described problems, the invention according to claim 1 is a state in which, in the curved portion of the shield method, the contact member protrudes from the outer peripheral side of the segment, and the contact member contacts the ground. The segment is installed in the curved portion.

請求項２に記載の発明は、請求項１に記載のシールド工法の曲線部におけるセグメント設置方法であって、前記セグメントの内周側から外周側に可動部材を突出させて、前記可動部材の突出端に設けられた前記当接部材を前記地山に当接させることを特徴とする。   Invention of Claim 2 is the segment installation method in the curve part of the shield method of Claim 1, Comprising: A movable member is made to protrude from the inner peripheral side of the said segment to the outer peripheral side, and protrusion of the said movable member is carried out The contact member provided at an end is brought into contact with the natural ground.

請求項３に記載の発明は、セグメントの外周側に突出可能で地山に当接可能な当接部材を備えることを特徴とする。   According to a third aspect of the present invention, there is provided an abutting member that can project to the outer peripheral side of the segment and can abut against a natural ground.

請求項４に記載の発明は、請求項３に記載のセグメントであって、その内周側から外周側に突出可能な可動部材を備え、前記可動部材の突出端に、前記当接部材が設けられていることを特徴とする。   A fourth aspect of the present invention is the segment according to the third aspect, comprising a movable member that can project from the inner peripheral side to the outer peripheral side, and the abutting member is provided at a protruding end of the movable member. It is characterized by being.

本発明によれば、シールド工法の曲線部において、セグメントを確実に設置することができる。   According to the present invention, it is possible to reliably install the segment in the curved portion of the shield method.

本発明を適用したセグメントの一実施形態の構成を示すもので、当接部材及び可動部材の組み付け部分を示した断面図である。FIG. 3 is a cross-sectional view showing a configuration of an embodiment of a segment to which the present invention is applied, and showing an assembly portion of a contact member and a movable member. 図１の部分に可動部材及び当接部材を組み付けた状態の図である。It is a figure of the state which assembled | attached the movable member and the contact member to the part of FIG. 図２の状態から可動部材及び当接部材を突出させて地山に当接させた状態の図である。It is a figure of the state which made the movable member and the contact member protrude from the state of FIG. 従来の袋付きセグメントによるセグメントの移動を示す説明図である。It is explanatory drawing which shows the movement of the segment by the conventional segment with a bag.

以下、図を参照して本発明を実施するための形態を詳細に説明する。
（実施形態）
図１及び図２は本発明を適用したセグメントの一実施形態の構成として可動部材４及び当接部材５の組み付け部分を示したもので、１はスキンプレート、２は鋼管、３はナットである。 DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
(Embodiment)
FIG. 1 and FIG. 2 show an assembly portion of a movable member 4 and a contact member 5 as a configuration of an embodiment of a segment to which the present invention is applied. 1 is a skin plate, 2 is a steel pipe, and 3 is a nut. .

図示のように、鋼製セグメントのスキンプレート１に穴を開けて、その内周側に鋼管２とナット３を溶接する。
そして、鋼製セグメントの内周側からスキンプレート１のナット３に、可動部材としての長ボルト４をねじ込んで、スキンプレート１の穴から外周側に突出する長ボルト４の先端に、当接部材としての鉄板５を溶接する。 As shown in the figure, a hole is made in the skin plate 1 of the steel segment, and the steel pipe 2 and the nut 3 are welded to the inner peripheral side thereof.
Then, a long bolt 4 as a movable member is screwed into the nut 3 of the skin plate 1 from the inner peripheral side of the steel segment, and the abutting member is attached to the tip of the long bolt 4 protruding from the hole of the skin plate 1 to the outer peripheral side. The steel plate 5 is welded.

図３は長ボルト４及び鉄板５を突出させて地山Ｇに当接させた状態を示したもので、６は蓋である。   FIG. 3 shows a state in which the long bolt 4 and the iron plate 5 are projected and brought into contact with the natural ground G, and 6 is a lid.

すなわち、シールド工法の曲線部において、セグメント設置後、図示のように、長ボルト４をナット３に対しねじ込んで、そのボルト先端の鉄板５を地山Ｇに当接させる。これにより鋼製セグメントの移動がなくなる。   That is, in the curved portion of the shield method, after the segment is installed, the long bolt 4 is screwed into the nut 3 as shown in the figure, and the iron plate 5 at the tip of the bolt is brought into contact with the natural ground G. This eliminates the movement of the steel segment.

その後、鋼管２の内側に予め施されたねじ切りに蓋６をねじ込んで固定すれば、セグメントの止水性を確保できる。   Then, if the lid 6 is screwed and fixed to the threading previously applied to the inside of the steel pipe 2, the water-stopping property of the segment can be ensured.

以上、実施形態の鋼製セグメント及びその設置方法によれば、鋼製セグメントの内周側から外周側に突出可能な長ボルト４及びその先端の鉄板５を備えたことで、シールド工法の曲線部において、セグメントを確実に設置することができる。   As described above, according to the steel segment of the embodiment and the installation method thereof, the long bolt 4 that can protrude from the inner peripheral side of the steel segment to the outer peripheral side and the iron plate 5 at the tip thereof are provided, so that the curved portion of the shield method is provided. In, the segment can be reliably installed.

（変形例）
以上の実施形態においては、鋼製セグメントとしたが、本発明はこれに限定されるものではなく、コンクリートセグメントであってもよい。
また、実施形態では、ボルトによる可動部材、鉄板による当接部材としたが、可動部材及び当接部材の形状や材質等も任意であり、その他、具体的な細部構造等についても適宜に変更可能であることは勿論である。 (Modification)
In the above embodiment, although it was set as the steel segment, this invention is not limited to this, A concrete segment may be sufficient.
In the embodiment, a movable member using a bolt and an abutting member made of an iron plate are used. However, the shape and material of the movable member and the abutting member are arbitrary, and other specific detailed structures can be changed as appropriate. Of course.

１ スキンプレート
２ 鋼管
３ ナット
４ 可動部材
５ 当接部材
６ 蓋 1 Skin Plate 2 Steel Pipe 3 Nut 4 Movable Member 5 Abutting Member 6 Lid

Claims (4)

シールド工法の曲線部において、
セグメントの外周側に当接部材を突出させて、地山に前記当接部材を当接させた状態で前記セグメントを前記曲線部に設置することを特徴とするシールド工法の曲線部におけるセグメント設置方法。 In the curved part of the shield method,
A segment installation method in a curved portion of a shield method, wherein a contact member is projected on an outer peripheral side of the segment, and the segment is installed in the curved portion in a state where the contact member is in contact with a natural ground . 前記セグメントの内周側から外周側に可動部材を突出させて、
前記可動部材の突出端に設けられた前記当接部材を前記地山に当接させることを特徴とする請求項１に記載のシールド工法の曲線部におけるセグメント設置方法。 The movable member protrudes from the inner peripheral side of the segment to the outer peripheral side,
The segment installation method in the curved part of the shield method according to claim 1, wherein the contact member provided at the protruding end of the movable member is brought into contact with the ground. セグメントの外周側に突出可能で地山に当接可能な当接部材を備えることを特徴とするセグメント。   A segment comprising an abutting member that can project on the outer peripheral side of the segment and abut against a natural ground. 前記セグメントの内周側から外周側に突出可能な可動部材を備え、
前記可動部材の突出端に、前記当接部材が設けられていることを特徴とする請求項３に記載のセグメント。 A movable member that can protrude from the inner peripheral side of the segment to the outer peripheral side,
The segment according to claim 3, wherein the contact member is provided at a protruding end of the movable member.
JP2011065199A 2011-03-24 2011-03-24 Segment installation method and segment in the curved part of shield method Active JP5693314B2 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5633397U (en) * 1979-08-22 1981-04-01
US4363565A (en) * 1979-02-21 1982-12-14 Mackenzie Colin N P Tunnelling
JPS60126499A (en) * 1983-12-13 1985-07-05 西松建設株式会社 Segment back filling method and apparatus
JPS6391595U (en) * 1986-12-04 1988-06-14
JPH0230900A (en) * 1988-07-21 1990-02-01 Ishikawajima Constr Materials Co Ltd Reaction force holder for steel segment
JP2006299723A (en) * 2005-04-25 2006-11-02 Okumura Corp Execution method of tunnel curved part by shield excavating machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4363565A (en) * 1979-02-21 1982-12-14 Mackenzie Colin N P Tunnelling
JPS5633397U (en) * 1979-08-22 1981-04-01
JPS60126499A (en) * 1983-12-13 1985-07-05 西松建設株式会社 Segment back filling method and apparatus
JPS6391595U (en) * 1986-12-04 1988-06-14
JPH0230900A (en) * 1988-07-21 1990-02-01 Ishikawajima Constr Materials Co Ltd Reaction force holder for steel segment
JP2006299723A (en) * 2005-04-25 2006-11-02 Okumura Corp Execution method of tunnel curved part by shield excavating machine

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