JP4562636B2 - Shape retention device - Google Patents

Shape retention device Download PDF

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JP4562636B2
JP4562636B2 JP2005295002A JP2005295002A JP4562636B2 JP 4562636 B2 JP4562636 B2 JP 4562636B2 JP 2005295002 A JP2005295002 A JP 2005295002A JP 2005295002 A JP2005295002 A JP 2005295002A JP 4562636 B2 JP4562636 B2 JP 4562636B2
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flanges
segment
expansion
panel
contraction
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JP2007100468A (en
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猛 安井
勝晴 奥村
芳人 中島
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ジャパントンネルシステムズ株式会社
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Description

本発明は、セグメント組立完了後のセグメントの形状を確保するための形状保持装置に係り、特にセグメントの厚さの変化に対応できる形状保持装置に関する。   The present invention relates to a shape holding device for securing the shape of a segment after completion of segment assembly, and more particularly to a shape holding device that can cope with a change in the thickness of a segment.

一般にシールド掘進機で掘削された坑道は、その内周に沿ってセグメントが組み立てられ、そのセグメントの裏側に裏込材を注入してセグメントを固定するが、裏込材が固化するまで、坑道の形状を保持しなければならない。   Generally, in a tunnel excavated by a shield machine, segments are assembled along the inner periphery of the tunnel, and a backing material is injected into the back side of the segment to fix the segment. Until the backing material solidifies, The shape must be retained.

そこで、シールド掘進機には、坑道の内周に沿って組み立てられたセグメントの内周面を押圧保持する形状保持装置が設けられている。   Therefore, the shield machine is provided with a shape holding device that presses and holds the inner peripheral surface of the segment assembled along the inner periphery of the tunnel.

形状保持装置は、上下に拡縮自在に形成されており、坑道の内周面に組み立てられたセグメントの上下の内周面を押圧保持するようになっている。   The shape holding device is formed so as to be able to expand and contract up and down, and presses and holds the upper and lower inner peripheral surfaces of the segments assembled on the inner peripheral surface of the tunnel.

特開平１１−２１０３９７号公報Japanese Patent Laid-Open No. 11-210397 実公平７−４７５１６号公報No. 7-47516

ところで、近年、トンネルを分岐させる時などシールド掘進機で構築したトンネル壁を地中で開削する工法が開発され始めている。この工法を用いる場合、開削時のトンネル強度を確保するためにセグメントの厚さを他の工区より厚くする必要があるが、在来工法では同一のトンネルでセグメントの厚さを変えるようなことはなく、セグメントの厚さの変化に対応できる形状保持装置は存在しないという問題があった。すなわち、セグメントの厚さを変化させる場合、シールドフレームの内径でトンネル壁の外径が決定されるため、トンネル壁の内径を変化させることとなり、内径が小さなトンネル壁と内径が大きなトンネル壁とを同一の形状保持装置で保持することとなるが、トンネル壁の内径差が大きい場合、形状保持装置の上下伸縮用のジャッキをストロークの長いものにしてトンネル壁の内径差に対応しようとすると、内径が大きなトンネル壁でジャッキを最大伸張させるとき、ジャッキのロッドに過大な横力が作用してしまい、ジャッキがもたないという課題があった。   By the way, in recent years, a construction method for excavating a tunnel wall constructed with a shield machine, such as when a tunnel is branched, has begun to be developed. When using this method, it is necessary to make the thickness of the segment thicker than other sections in order to secure the tunnel strength at the time of excavation, but in the conventional method, it is not possible to change the thickness of the segment in the same tunnel. In addition, there is a problem that there is no shape holding device that can cope with the change in the thickness of the segment. That is, when the thickness of the segment is changed, the outer diameter of the tunnel wall is determined by the inner diameter of the shield frame. Therefore, the inner diameter of the tunnel wall is changed, and a tunnel wall having a smaller inner diameter and a tunnel wall having a larger inner diameter are combined. If the tunnel wall has a large inner-diameter difference, the upper and lower expansion / contraction jacks of the shape-holding device have a long stroke, and the inner diameter of the tunnel wall is reduced. However, when the jack is extended to the maximum with a large tunnel wall, excessive lateral force acts on the rod of the jack, and there is a problem that the jack does not have.

そこで、本発明の目的は、上記課題を解決し、セグメントの厚さが変化してもセグメントの形状を確保でき、セグメントの厚さの変化に対応できる形状保持装置を提供することにある。   Accordingly, an object of the present invention is to solve the above-described problems, and to provide a shape holding device that can ensure the shape of the segment even when the thickness of the segment changes and can cope with the change in the thickness of the segment.

上記課題を解決するために本発明は、上下方向に拡張する上下フレーム間に上下フレームを拡縮するジャッキを設け、セグメント組立完了後のセグメントに上下フレームが位置したときジャッキを伸張させて上下フレームで上記セグメントの形状を確保するための形状保持装置において、組立完了後のセグメントの厚さが変化したとき、上記ジャッキのストロークを変えず、上下フレームのいずれか一方又は両方の高さ方向の長さを可変に調整する高さ調整手段を、上下フレームに設けたものである。   In order to solve the above problems, the present invention provides a jack for expanding and contracting the upper and lower frames between the upper and lower frames extending in the vertical direction, and when the upper and lower frames are positioned on the segment after completion of the segment assembly, In the shape holding device for securing the shape of the segment, when the thickness of the segment after assembly is changed, the length of either or both of the upper and lower frames is changed without changing the stroke of the jack. Height adjusting means for variably adjusting the height is provided on the upper and lower frames.

上記高さ調整手段は、上下にテレスコピック状に伸縮する伸縮部と、伸縮部を縮退した長さで固定する縮退側固定部材と、伸縮部を伸張した長さで固定する伸張側固定部材とを備えるとよい。   The height adjusting means includes a telescopic part that telescopically expands and contracts vertically, a contraction side fixing member that fixes the expansion part with a contracted length, and an expansion side fixing member that fixes the expansion part with a stretched length. It is good to have.

上記縮退側固定部材は、上記伸縮部の外周部と内周部とに設けられ伸縮部を縮めたとき上下に重なって締結される一対のフランジからなるとよい。   The contraction-side fixing member may be formed of a pair of flanges that are provided on the outer peripheral portion and the inner peripheral portion of the expansion / contraction portion and are fastened to overlap each other when the expansion / contraction portion is contracted.

伸張側固定部材は、上記伸縮部を伸張させて上記フランジ同士が離間したとき上記フランジ間に設けられるパネル部材からなるとよい。   The extension side fixing member may be a panel member provided between the flanges when the flanges are separated from each other by extending the stretchable part.

上記フランジの一方に取り付けられ上記伸縮部が縮退しているとき上記パネル部材をフランジに臨んで固定しておくパネル仮設部材を備えるとよい。   It is good to provide the panel temporary member which is attached to one side of the said flange, and fixes the said panel member facing a flange when the said expansion-contraction part has retracted.

上記パネル仮設部材は、上記パネル部材を固定する面を上記フランジのフランジ面と面一に形成され、一対のフランジ間にパネル部材を設けるとき、パネル部材をガイドするように構成されるとよい。   The panel temporary member may be configured such that a surface for fixing the panel member is formed flush with a flange surface of the flange, and the panel member is guided when the panel member is provided between the pair of flanges.

本発明によれば、セグメントの厚さが変化してもセグメントの形状を確保でき、セグメントの厚さの変化に対応できる。   According to the present invention, the shape of the segment can be secured even if the thickness of the segment changes, and the change in the thickness of the segment can be dealt with.

本発明の好適実施の形態を添付図面を用いて説明する。   Preferred embodiments of the present invention will be described with reference to the accompanying drawings.

図１及び図５に示すように、形状保持装置１は、上下方向に拡張する上下フレーム２、３間に上下フレーム２、３を拡縮するジャッキ４を設けて構成されており、セグメント組立完了後のセグメント５に上下フレーム２、３が位置したときジャッキ４を伸張させて上下フレーム２、３でセグメント５の形状を確保するようになっている。上部フレーム２は、幅方向に延びて形成され、複数のセグメント５で形成されるトンネル壁６の上部内周面７に当接される上部当接部８と、上部当接部８の両端から垂下して形成され下部フレーム３と上下スライド自在に係合される上部支柱部９と、上部支柱部９に幅方向内側に延びて設けられシールドフレームＳの後方から延出された後方デッキ１０にローラ１１を介して前後走行可能に載置される内梁部１２とを備えて構成されている。上部当接部８は、セグメント５の厚さが最も薄いときのトンネル壁６の上部内周面７に沿うように湾曲して形成されており、セグメント５を幅広い面で受けるようになっている。   As shown in FIGS. 1 and 5, the shape holding device 1 is configured by providing a jack 4 for expanding and contracting the upper and lower frames 2 and 3 between the upper and lower frames 2 and 3 that extend in the vertical direction. When the upper and lower frames 2, 3 are positioned on the segment 5, the jack 4 is extended to secure the shape of the segment 5 with the upper and lower frames 2, 3. The upper frame 2 is formed extending in the width direction, and has an upper contact portion 8 that is in contact with the upper inner peripheral surface 7 of the tunnel wall 6 formed by a plurality of segments 5, and both ends of the upper contact portion 8. An upper support column 9 that is formed to hang down and is slidably engaged with the lower frame 3, and a rear deck 10 that extends from the rear of the shield frame S and extends inward in the width direction to the upper support column 9. And an inner beam portion 12 mounted so as to be able to run back and forth via a roller 11. The upper contact portion 8 is formed to be curved along the upper inner peripheral surface 7 of the tunnel wall 6 when the thickness of the segment 5 is the smallest, and receives the segment 5 on a wide range of surfaces. .

下部フレーム３は、トンネル壁６の下部内周面１３に当接される下部当接部１４と、下部当接部１４の両端に脱着可能に設けられ上方に延びて上部フレーム２の上部支柱部９に上下スライド自在に係合される下部支柱部１５とを備えて構成されている。下部当接部１４は、上部当接部８と同様にセグメント５の厚さが最も薄いときのトンネル壁６の下部内周面１３に沿うように湾曲して形成されており、セグメント５を幅広い面で支えるようになっている。   The lower frame 3 includes a lower contact portion 14 that is in contact with the lower inner peripheral surface 13 of the tunnel wall 6, and is detachably provided at both ends of the lower contact portion 14. 9 and a lower support portion 15 that is slidably engaged with the upper and lower portions. The lower contact portion 14 is formed so as to be curved along the lower inner peripheral surface 13 of the tunnel wall 6 when the thickness of the segment 5 is the smallest, similarly to the upper contact portion 8. It comes to be supported by the surface.

ジャッキ４は、従来のジャッキ（図示せず）と略同等のストローク及びロッド径に形成されており、セグメント５から受ける荷重に対して必要十分の最適な強度に形成されている。すなわち、ジャッキ４は、セグメント５の厚さが最も薄いとき伸張してセグメント５を支え、又は縮退して後方デッキ１０上に内梁部１２を載置させるのに必要最小限のストローク及びロッド径に形成されており、セグメント５の厚さの差を吸収するようなストロークの変更はなされていない。   The jack 4 is formed to have a stroke and a rod diameter substantially the same as those of a conventional jack (not shown), and has an optimum strength necessary and sufficient for a load received from the segment 5. That is, the jack 4 expands to support the segment 5 when the thickness of the segment 5 is thinnest, or retracts to retract the inner beam portion 12 on the rear deck 10 and the rod diameter. The stroke is not changed so as to absorb the difference in thickness of the segment 5.

また、上部フレーム２には、組立完了後のセグメント５の厚さが変化したとき、ジャッキ４のストロークを変えず、上部フレーム２の高さ方向の長さを可変に調整する高さ調整手段１６が予め設けられている。   In addition, when the thickness of the segment 5 after assembly is changed, the upper frame 2 does not change the stroke of the jack 4, and the height adjusting means 16 that variably adjusts the length of the upper frame 2 in the height direction. Is provided in advance.

図２、図３及び図４に示すように、高さ調整手段１６は、上部フレーム２に形成され上下にテレスコピック状に伸縮する伸縮部１７と、伸縮部１７を縮退した長さで固定する縮退側固定部材１８と、伸縮部１７を伸張した長さで固定する伸張側固定部材１９とを備えて構成されている。具体的には、伸縮部１７は、上部支柱部９を上下に分断すると共に、一方の切断端に他方の切断端内にスライド自在に嵌入される内周部２０を設けて形成されている。図２及び図３に示すように、縮退側固定部材１８は、伸縮部１７の内周部２０と、内周部２０を嵌入させる外周部２１とに設けられ伸縮部１７を縮めたとき上下に重なって締結される一対のフランジ２２、２３からなる。フランジ２２、２３は、それぞれ平面視矩形状に形成されている。伸張側固定部材１９は、伸縮部１７を伸張させてフランジ２２、２３同士が離間したときフランジ２２、２３間に設けられるパネル部材２４、２５からなる。パネル部材２４、２５は、矩形板状に形成された鋼材からなり、フランジ２２、２３間に設けられるとき、フランジ２２、２３の四辺にそれぞれ起立して締結されるようになっている。パネル部材２４、２５は、上下のセグメント５の厚さの差、すなわち、トンネル壁６の内径差と同じ高さに設定されており、フランジ２２、２３間に設けたとき、上部フレーム２をトンネル壁６の内径差だけ延ばすようになっている。また、パネル部材２４、２５は、伸縮部１７が縮退しているとき、パネル仮設部材２６、２７を介してフランジ２２、２３に臨んで固定されるようになっている。   As shown in FIGS. 2, 3 and 4, the height adjusting means 16 includes a telescopic portion 17 which is formed on the upper frame 2 and telescopically expands and contracts vertically, and a retractable portion which fixes the telescopic portion 17 with a contracted length. A side fixing member 18 and an extension side fixing member 19 that fixes the stretchable portion 17 with an extended length are provided. Specifically, the expansion / contraction portion 17 is formed by dividing the upper support column portion 9 in the vertical direction and providing an inner peripheral portion 20 that is slidably fitted into one of the cut ends in the other cut end. As shown in FIGS. 2 and 3, the contraction-side fixing member 18 is provided on the inner peripheral portion 20 of the telescopic portion 17 and the outer peripheral portion 21 into which the inner peripheral portion 20 is fitted, and is vertically moved when the telescopic portion 17 is contracted. It consists of a pair of flanges 22 and 23 that are fastened together. The flanges 22 and 23 are each formed in a rectangular shape in plan view. The extension-side fixing member 19 includes panel members 24 and 25 provided between the flanges 22 and 23 when the expansion / contraction part 17 is extended and the flanges 22 and 23 are separated from each other. The panel members 24 and 25 are made of a steel material formed in a rectangular plate shape, and when provided between the flanges 22 and 23, the panel members 24 and 25 are erected and fastened to the four sides of the flanges 22 and 23, respectively. The panel members 24 and 25 are set to have the same height as the difference in thickness between the upper and lower segments 5, that is, the difference in inner diameter of the tunnel wall 6, and when provided between the flanges 22 and 23, the upper frame 2 is tunneled. The inner diameter difference of the wall 6 is extended. Further, the panel members 24 and 25 are fixed so as to face the flanges 22 and 23 via the panel temporary members 26 and 27 when the expansion / contraction part 17 is retracted.

パネル仮設部材２６、２７は、上側のフランジ２２の外周端にフランジ２２の延長方向に延びて設けられており、フランジ２２のフランジ面（図示せず）と面一に形成されると共にパネル部材２４、２５の上端面２８を固定するための固定面２９を有する。具体的には、パネル仮設部材２６、２７は、固定面２９にパネル部材２４、２５の上端面２８を当接させてパネル部材２４、２５にボルト等で締結されるように形成されている。固定面２９は、一対のフランジ２２、２３間にパネル部材２４、２５を設けるとき、パネル部材２４、２５をフランジ２２、２３間に向けてガイドするように構成されている。また、伸縮部１７が縮退しているときパネル部材２４、２５は、その下端部を取付プレート３０、３１を介して上部フレーム２の各部に締結されており、縮退した上部フレーム２と一体となっている。   The panel temporary members 26 and 27 are provided at the outer peripheral end of the upper flange 22 so as to extend in the extending direction of the flange 22, and are formed flush with the flange surface (not shown) of the flange 22 and the panel member 24. , 25 has a fixing surface 29 for fixing the upper end surface 28 thereof. Specifically, the panel temporary members 26 and 27 are formed such that the upper end surfaces 28 of the panel members 24 and 25 are brought into contact with the fixed surface 29 and fastened to the panel members 24 and 25 with bolts or the like. The fixing surface 29 is configured to guide the panel members 24, 25 toward the flanges 22, 23 when the panel members 24, 25 are provided between the pair of flanges 22, 23. Further, when the telescopic portion 17 is retracted, the panel members 24 and 25 are fastened to the respective portions of the upper frame 2 via the mounting plates 30 and 31 at the lower ends thereof, and are integrated with the retracted upper frame 2. ing.

図８及び図１０に示すように、高さ調整手段１６は、伸縮部１７を伸縮させるとき、伸縮部１７の上側の上部フレーム２を支持するための受け架台３２と、上下に離間したフランジ２２、２３間にパネル部材２４、２５を設けるとき、パネル部材２４、２５をフランジ２２、２３間に送る送り装置３３とを有する。   As shown in FIGS. 8 and 10, the height adjusting means 16 includes a receiving base 32 for supporting the upper frame 2 on the upper side of the expansion / contraction part 17 and a flange 22 that is vertically spaced when the expansion / contraction part 17 is expanded / contracted. , 23, when the panel members 24, 25 are provided, a feeding device 33 is provided for feeding the panel members 24, 25 between the flanges 22, 23.

受け架台３２は、上部当接部８直下の後方デッキ１０上に載置した状態で、上部フレーム２を降下させたとき、上部当接部８を支持するようになっており、このようにして上側のフランジ２２の高さを固定することで、フランジ２２、２３間からパネル部材２４、２５を取り外せるようにすると共に、ジャッキ４による上下フランジ２２、２３の相対移動（近接離間）を可能とする。また特に、上述のように上部当接部８を受け架台３２で支持しつつジャッキ４を縮退させて後方デッキ１０上に上部フレーム２を載置したとき、受け架台３２は、上下のフランジ２２、２３をパネル部材２４、２５の高さと同じ長さだけ離間させるように高さを設定されている。   The cradle 32 is configured to support the upper contact portion 8 when the upper frame 2 is lowered while being placed on the rear deck 10 immediately below the upper contact portion 8. By fixing the height of the upper flange 22, the panel members 24 and 25 can be removed from between the flanges 22 and 23, and the relative movement (proximity separation) of the upper and lower flanges 22 and 23 by the jack 4 is enabled. . In particular, when the upper frame 2 is placed on the rear deck 10 by retracting the jack 4 while receiving the upper abutting portion 8 and supporting it by the gantry 32 as described above, the cradle 32 has the upper and lower flanges 22, The height is set so that 23 is separated by the same length as the height of the panel members 24 and 25.

送り装置３３は、下側のフランジ２３に着脱自在に取り付けられる基部３４と、基部３４にフランジ２３の延長方向に沿ってスライド自在に設けられパネル部材２４、２５をガイドするためのガイドロッド３５と、ガイドロッド３５と平行に延びて基部３４に螺合され、パネル部材２４、２５をフランジ２２、２３間に向けて押し込むための押込ボルト３６とを備えて構成されている。基部３４は、下側のフランジ２３の外周端にフランジ２３の延長方向に延びて取り付けられる延出部３７と、延出部３７の延出端に起立して設けられる起立部３８とからなる。延出部３８は、フランジ２３のフランジ面と面一に形成されると共にパネル部材２４、２５の下端面４１をスライドさせるためのガイド面３９を有する。起立部３８には、ガイドロッド３５がスライド自在に挿通されると共に、押込ボルト３６が水平方向に貫通して螺合されている。   The feeding device 33 includes a base 34 that is detachably attached to the lower flange 23, and a guide rod 35 that is slidably provided on the base 34 along the extending direction of the flange 23 and guides the panel members 24 and 25. , And extends in parallel with the guide rod 35 and screwed into the base 34, and is provided with a pushing bolt 36 for pushing the panel members 24, 25 toward the flanges 22, 23. The base portion 34 includes an extension portion 37 that is attached to the outer peripheral end of the lower flange 23 so as to extend in the extending direction of the flange 23, and a standing portion 38 that is provided upright at the extension end of the extension portion 37. The extending portion 38 is formed flush with the flange surface of the flange 23 and has a guide surface 39 for sliding the lower end surfaces 41 of the panel members 24 and 25. A guide rod 35 is slidably inserted into the standing portion 38, and a push bolt 36 is threaded through the horizontal direction.

次に本実施の形態の作用を述べる。   Next, the operation of this embodiment will be described.

図７及び図８に示すように、セグメント５の厚さが厚い工区から薄い工区に移行する場合、後方デッキ１０上で形状保持装置１を走行させ、形状保持装置１をセグメント５の厚さの薄い工区に移動させたのち、ジャッキ４を伸張させて上部フレーム２を上昇させる。このとき、ジャッキ４はセグメント５の厚さの差に対応するようにストロークを決定されていないため、上部フレーム２がセグメント５に届くことはない。この状態で上部フレーム２直下の後方デッキ１０上に受け架台３２を載置すると共にフランジ２２、２３同士の締結を解除し、ジャッキ４を縮退させる。これにより、上側のフランジ２２の高さを保ちつつ下側のフランジ２３を降下させることができ、図９に示すように、フランジ２２、２３同士を離間させることができる。上部フレーム２が後方デッキ１０上に載置されたら、後方デッキ１０に伸縮部１７周辺の作業を行うための仮足場４０を設置し、図１０に示すように、下側のフランジ２３とパネル部材２４、２５とに送り装置３３を取り付ける。このとき、上部フレーム２が後方デッキ１０上に載置されることで、上下のフランジ２２、２３はパネル部材２４、２５の高さと同じ長さだけ正確に離間される。また、パネル部材２４、２５は、上側のフランジ２２から延出するパネル仮設部材２６、２７の下面（固定面２９）に吊り下げられるようにして取り付けられているため、上下のフランジ２２、２３間の外側に取付時の姿勢と同じ姿勢で位置されることとなる。   As shown in FIG. 7 and FIG. 8, when the segment 5 is shifted from a thick work area to a thin work area, the shape holding device 1 is run on the rear deck 10, and the shape holding device 1 is moved to the thickness of the segment 5. After moving to a thin work area, the upper frame 2 is raised by extending the jack 4. At this time, since the stroke of the jack 4 is not determined so as to correspond to the difference in thickness of the segment 5, the upper frame 2 does not reach the segment 5. In this state, the receiving base 32 is placed on the rear deck 10 directly below the upper frame 2 and the fastening between the flanges 22 and 23 is released, so that the jack 4 is retracted. Thereby, the lower flange 23 can be lowered while maintaining the height of the upper flange 22, and the flanges 22, 23 can be separated from each other as shown in FIG. When the upper frame 2 is placed on the rear deck 10, a temporary scaffold 40 for performing work around the telescopic portion 17 is installed on the rear deck 10, and as shown in FIG. 10, the lower flange 23 and the panel member The feeding device 33 is attached to 24 and 25. At this time, since the upper frame 2 is placed on the rear deck 10, the upper and lower flanges 22 and 23 are accurately separated by the same length as the height of the panel members 24 and 25. Further, since the panel members 24 and 25 are attached so as to be suspended from the lower surfaces (fixed surfaces 29) of the panel temporary members 26 and 27 extending from the upper flange 22, the upper and lower flanges 22 and 23 are separated from each other. It will be located in the same attitude | position as the attitude | position at the time of attachment outside.

この後、パネル仮設部材２６、２７に対するパネル部材２４、２５の固定を解除し、パネル部材２４、２５を送り装置３３でフランジ２２、２３間の隙間に送る。具体的には、送り装置３３の基部３４を下側のフランジ２３の外周端にボルト等で取り付け、ガイドロッド３５の一端をパネル部材２４、２５に溶接又は螺合等の方法で取り付けた後、パネル仮設部材２６、２７とパネル部材２４、２５との締結を解除する。パネル部材２４、２５は、下端面４１を送り装置３３のガイド面３９に当接されると共に上端面２８をパネル仮設部材２６、２７の固定面２９に当接されているため、締結を解除されても動くことはない。パネル部材２４、２５をフランジ２２、２３間に送るときは、押込ボルト３６を回転させてパネル部材２４、２５をフランジ２２、２３側に押し込む。押込ボルト３６に押されたパネル部材２４、２５は、上下両端面２８、４１をパネル仮設部材２６、２７と送り装置３３とにガイドされると共に、ガイドロッド３５を介して送り装置３３の基部３４にガイドされるため、傾くことなく安定してフランジ２２、２３間の隙間に送られることとなる。   Thereafter, the fixing of the panel members 24 and 25 to the panel temporary members 26 and 27 is released, and the panel members 24 and 25 are sent to the gap between the flanges 22 and 23 by the feeding device 33. Specifically, after attaching the base 34 of the feeding device 33 to the outer peripheral end of the lower flange 23 with a bolt or the like and attaching one end of the guide rod 35 to the panel members 24 and 25 by a method such as welding or screwing, The fastening between the panel temporary members 26 and 27 and the panel members 24 and 25 is released. The panel members 24 and 25 are released from fastening because the lower end surface 41 is in contact with the guide surface 39 of the feeding device 33 and the upper end surface 28 is in contact with the fixed surface 29 of the panel temporary members 26 and 27. But it doesn't move. When the panel members 24 and 25 are sent between the flanges 22 and 23, the push bolt 36 is rotated to push the panel members 24 and 25 into the flanges 22 and 23 side. The panel members 24, 25 pushed by the push bolt 36 are guided by the panel temporary members 26, 27 and the feeding device 33 at the upper and lower end faces 28, 41 and at the base 34 of the feeding device 33 via the guide rod 35. Therefore, it is stably fed to the gap between the flanges 22 and 23 without being inclined.

この後、上下のフランジ２２、２３とそれぞれのパネル部材２４、２５とをボルト等で締結すると共に、フランジ２２、２３の四隅で隣接するパネル部材２４、２５同士をボルト等で締結して伸縮部１７を伸張した状態に固定する。これにより、図１０に示すように、上部フレーム２の高さを嵩上げすることができる。このようにして伸縮部１７の伸張作業が完了したら、受け架台３２を撤去する。また、セグメント５の厚さが薄くなるとセグメント５の内周面の曲率も大きくなり、上下フレーム２、３の上部当接部８及び下部当接部１４の曲率と一致しなくなるため、図１１に示すように、上部当接部８の上面にテーパアタッチメント４３を取り付けて上部当接部８の当接面の曲率を調整すると共に、図６に示すように、下部当接部１４の下面にテーパアタッチメント４３を取り付けて下部当接部１４の当接面の曲率を調整する。またさらに、仮足場４０を撤去する。これにより、図１２及び図６に示すようにジャッキ４を通常通り伸張させることで、セグメント５を保持することができ、ジャッキ４のストロークを変えずともセグメント５の厚さの差に対応することができる。   Thereafter, the upper and lower flanges 22 and 23 and the respective panel members 24 and 25 are fastened with bolts or the like, and the panel members 24 and 25 adjacent to each other at the four corners of the flanges 22 and 23 are fastened with bolts or the like. 17 is fixed in the extended state. Thereby, as shown in FIG. 10, the height of the upper frame 2 can be raised. When the extension work of the extendable part 17 is completed in this way, the cradle 32 is removed. Further, when the thickness of the segment 5 is reduced, the curvature of the inner peripheral surface of the segment 5 is also increased and does not match the curvature of the upper contact portion 8 and the lower contact portion 14 of the upper and lower frames 2, 3. As shown in FIG. 6, a taper attachment 43 is attached to the upper surface of the upper contact portion 8 to adjust the curvature of the contact surface of the upper contact portion 8, and the lower surface of the lower contact portion 14 is tapered as shown in FIG. The attachment 43 is attached to adjust the curvature of the contact surface of the lower contact portion 14. Furthermore, the temporary scaffold 40 is removed. Thus, as shown in FIGS. 12 and 6, the segment 5 can be held by extending the jack 4 as usual, and the difference in the thickness of the segment 5 can be accommodated without changing the stroke of the jack 4. Can do.

また、伸縮部１７の縮退は、上述と同様に受け架台３２上に上部フレーム２を載せたのち、上下フランジ２２、２３からパネル部材２４、２５を取り外してフランジ２２、２３の外側に移動させると共にそのパネル部材２４、２５をパネル仮設部材２６、２７に締結し、ジャッキ４を伸張させて上下フランジ２２、２３を重ね合わせ、しかるのち、上下フランジ２２、２３を締結することで容易になし得る。   The expansion / contraction part 17 is retracted by placing the upper frame 2 on the receiving base 32 in the same manner as described above, and then removing the panel members 24, 25 from the upper and lower flanges 22, 23 and moving them to the outside of the flanges 22, 23. The panel members 24 and 25 are fastened to the panel temporary members 26 and 27, the jack 4 is extended, the upper and lower flanges 22 and 23 are overlapped, and then the upper and lower flanges 22 and 23 are fastened.

このように、組立完了後のセグメント５の厚さが変化したとき、ジャッキ４のストロークを変えず、上部フレーム２の高さ方向の長さを可変に調整する高さ調整手段１６を、予め上部フレーム２に設けたため、セグメント５の厚さが変化しても高さ調整手段１６で上部フレーム２の高さ方向の長さを調整することでセグメント５の形状を確保でき、ジャッキ４のストロークによることなく、セグメント５の厚さの変化に対応することができる。   Thus, when the thickness of the segment 5 after the assembly is completed, the height adjusting means 16 for adjusting the length in the height direction of the upper frame 2 without changing the stroke of the jack 4 is previously Since the frame 2 is provided, the shape of the segment 5 can be secured by adjusting the length of the upper frame 2 with the height adjusting means 16 even if the thickness of the segment 5 changes. Without change, it is possible to cope with a change in the thickness of the segment 5.

高さ調整手段１６は、上下にテレスコピック状に伸縮する伸縮部１７と、伸縮部１７を縮退した長さで固定する縮退側固定部材１８と、伸縮部１７を伸張した長さで固定する伸張側固定部材１９とを備えるものとしたため、上部フレーム２の高さ方向の長さを所定の長さに確実に調整することができる。   The height adjusting means 16 includes a telescopic portion 17 that telescopically expands and contracts vertically, a contraction side fixing member 18 that fixes the telescopic portion 17 with a contracted length, and an expansion side that fixes the stretchable portion 17 with an extended length. Since the fixing member 19 is provided, the length of the upper frame 2 in the height direction can be reliably adjusted to a predetermined length.

縮退側固定部材１８は、伸縮部１７の外周部２１と内周部２０とに設けられ伸縮部１７を縮めたとき上下に重なって締結される一対のフランジ２２、２３からなるものとしたため、伸縮部１７を縮退した所定の長さに簡単な構造で確実に固定することができる。   The contraction-side fixing member 18 is composed of a pair of flanges 22 and 23 that are provided on the outer peripheral portion 21 and the inner peripheral portion 20 of the expansion / contraction portion 17 and are fastened to overlap each other when the expansion / contraction portion 17 is contracted. The portion 17 can be securely fixed to the predetermined length with a simple structure.

伸張側固定部材１９は、伸縮部１７を伸張させてフランジ２２、２３同士が離間したときフランジ２２、２３間に設けられるパネル部材２４、２５からなるものとしたため、伸縮部１７を伸張した所定の長さに簡単な構造で確実に固定することができる。   The extension-side fixing member 19 is composed of panel members 24 and 25 provided between the flanges 22 and 23 when the extension portions 17 are extended and the flanges 22 and 23 are separated from each other. Can be securely fixed to the length with a simple structure.

また、上側のフランジ２２に取り付けられ伸縮部１７が縮退しているときパネル部材２４、２５をフランジ２２に臨んで固定しておくパネル仮設部材２６、２７を備えたため、伸縮部１７を伸縮する度に１個１００〜１５０Ｋｇの重量があるパネル部材２４、２５を伸縮部１７まで運び、又は回収する手間を省くことができ、伸縮部１７を効率よく伸縮させることができる。   Further, since the panel members 24 and 25 are attached to the upper flange 22 and the panel members 24 and 25 are fixed so as to face the flange 22 when the expansion and contraction portion 17 is retracted, the expansion and contraction portion 17 is expanded and contracted. Thus, it is possible to save the trouble of carrying or collecting the panel members 24, 25 having a weight of 100 to 150 kg to the expansion / contraction part 17, and the expansion / contraction part 17 can be efficiently expanded / contracted.

パネル仮設部材２６、２７は、パネル部材２４、２５を固定する固定面２９をフランジ２２のフランジ面と面一に形成され、一対のフランジ２２、２３間にパネル部材２４、２５を設けるとき、固定面２９でパネル部材２４、２５をガイドするように構成されたため、フランジ２２、２３間とパネル仮設位置との間でパネル部材２４、２５を容易に移動させることができ、伸縮部１７を効率よく伸縮させることができる。   The panel temporary members 26, 27 are formed so that a fixing surface 29 for fixing the panel members 24, 25 is flush with the flange surface of the flange 22, and is fixed when the panel members 24, 25 are provided between the pair of flanges 22, 23. Since the panel members 24 and 25 are configured to be guided by the surface 29, the panel members 24 and 25 can be easily moved between the flanges 22 and 23 and the temporary panel position, and the expansion / contraction part 17 can be efficiently performed. Can be expanded and contracted.

なお、高さ調整手段１６は上部フレーム２に設けるものとしたが、下部フレーム３に設けてもよく、上部フレーム２と下部フレーム３の両方に設けてもよい。   Although the height adjusting means 16 is provided on the upper frame 2, it may be provided on the lower frame 3 or on both the upper frame 2 and the lower frame 3.

また、パネル仮設部材２６、２７は上側のフランジ２２に設けるものとしたが、下側のフランジ２３に設けてもよい。この場合、上側のフランジ２２に送り装置３３を設けるとよい。   The panel temporary members 26 and 27 are provided on the upper flange 22, but may be provided on the lower flange 23. In this case, a feeding device 33 may be provided on the upper flange 22.

受け架台３２は、伸縮部１７の上側の上部フレーム２を支持するものとしたが、伸縮部１７が下部フレーム３に形成される場合、伸縮部１７の下側の下部フレーム３を支持するものにするとよい。   The cradle 32 supports the upper frame 2 on the upper side of the expansion / contraction part 17. However, when the expansion / contraction part 17 is formed on the lower frame 3, the support base 32 supports the lower frame 3 on the lower side of the expansion / contraction part 17. Good.

また、受け架台３２は、上下に伸縮する受け用ジャッキ（図示せず）としてもよい。この場合、フランジ２２、２３同士の締結を解除したのち、受け用ジャッキを伸縮させることでフランジ２２、２３同士を離間させることができる。   The receiving stand 32 may be a receiving jack (not shown) that expands and contracts vertically. In this case, after releasing the fastening between the flanges 22 and 23, the flanges 22 and 23 can be separated from each other by expanding and contracting the receiving jack.

本発明の好適実施の形態を示す形状保持装置の正面断面図である。It is front sectional drawing of the shape holding | maintenance apparatus which shows suitable embodiment of this invention. 高さ調整手段の斜視図である。It is a perspective view of a height adjustment means. 高さ調整手段の正面図である。It is a front view of a height adjustment means. 図３のＡ−Ａ線矢視断面図である。FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. 図１の側面図である。It is a side view of FIG. セグメントの厚さが薄くなったときの形状保持装置の正面断面図である。It is front sectional drawing of a shape holding device when the thickness of a segment becomes thin. セグメントの厚さが厚いときの形状保持装置の要部拡大正面断面図である。It is an important section expanded front sectional view of a shape maintenance device when the thickness of a segment is thick. セグメントの厚さが薄くなったとき、高さ調整手段で上部フレームの高さを調整する第１工程の形状保持装置の要部拡大正面断面図である。It is a principal part expanded front sectional view of the shape maintenance apparatus of the 1st process of adjusting the height of an upper frame with a height adjustment means, when the thickness of a segment becomes thin. 高さ調整手段で上部フレームの高さを調整する第２工程の形状保持装置の要部拡大正面断面図である。It is an important section expanded front sectional view of the shape maintenance device of the 2nd process of adjusting the height of an upper frame with height adjustment means. 高さ調整手段で上部フレームの高さを調整する第３工程の形状保持装置の要部拡大正面断面図である。It is a principal part expanded front sectional view of the shape holding | maintenance apparatus of the 3rd process which adjusts the height of an upper frame with a height adjustment means. 高さ調整手段で上部フレームの高さを調整する第４工程の形状保持装置の要部拡大正面断面図である。It is principal part expanded front sectional drawing of the shape holding | maintenance apparatus of the 4th process which adjusts the height of an upper frame with a height adjustment means. 高さを調整した上部フレームでセグメントを保持する形状保持装置の要部拡大正面断面図である。It is a principal part expanded front sectional view of the shape holding | maintenance apparatus holding a segment with the upper frame which adjusted height.

符号の説明Explanation of symbols

１ 形状保持装置
２ 上部フレーム
３ 下部フレーム
４ ジャッキ
５ セグメント
１６ 高さ調整手段
１７ 伸縮部
１８ 縮退側固定部材
１９ 伸張側固定部材
２０ 内周部
２１ 外周部
２２ フランジ（上側のフランジ）
２３ フランジ（下側のフランジ）
２４ パネル部材
２５ パネル部材
２６ パネル仮設部材
２７ パネル仮設部材
２９ 固定面 DESCRIPTION OF SYMBOLS 1 Shape holding apparatus 2 Upper frame 3 Lower frame 4 Jack 5 Segment 16 Height adjustment means 17 Telescopic part 18 Retraction side fixing member 19 Extension side fixing member 20 Inner peripheral part 21 Outer peripheral part 22 Flange (upper flange)
23 Flange (lower flange)
24 Panel member 25 Panel member 26 Panel temporary member 27 Panel temporary member 29 Fixed surface

Claims (6)

上下方向に拡張する上下フレーム間に上下フレームを拡縮するジャッキを設け、セグメント組立完了後のセグメントに上下フレームが位置したときジャッキを伸張させて上下フレームで上記セグメントの形状を確保するための形状保持装置において、組立完了後のセグメントの厚さが変化したとき、上記ジャッキのストロークを変えず、上下フレームのいずれか一方又は両方の高さ方向の長さを可変に調整する高さ調整手段を、上下フレームに設けたことを特徴とする形状保持装置。   A jack that expands and contracts the upper and lower frames is provided between the upper and lower frames that extend in the vertical direction, and when the upper and lower frames are positioned on the segment after completion of segment assembly, the jack is extended to maintain the shape of the segments in the upper and lower frames. In the apparatus, when the thickness of the segment after assembly is completed, the height adjusting means for variably adjusting the length in the height direction of one or both of the upper and lower frames without changing the stroke of the jack, A shape holding device provided on the upper and lower frames. 上記高さ調整手段は、上下にテレスコピック状に伸縮する伸縮部と、伸縮部を縮退した長さで固定する縮退側固定部材と、伸縮部を伸張した長さで固定する伸張側固定部材とを備える請求項１記載の形状保持装置。   The height adjusting means includes a telescopic part that telescopically expands and contracts vertically, a contraction side fixing member that fixes the expansion part with a contracted length, and an expansion side fixing member that fixes the expansion part with a length that is extended. The shape holding apparatus of Claim 1 provided. 上記縮退側固定部材は、上記伸縮部の外周部と内周部とに設けられ伸縮部を縮めたとき上下に重なって締結される一対のフランジからなる請求項２記載の形状保持装置。   3. The shape holding device according to claim 2, wherein the contraction-side fixing member includes a pair of flanges that are provided on an outer peripheral portion and an inner peripheral portion of the expansion / contraction portion and are overlapped and fastened when the expansion / contraction portion is contracted. 伸張側固定部材は、上記伸縮部を伸張させて上記フランジ同士が離間したとき上記フランジ間に設けられるパネル部材からなる請求項３記載の形状保持装置。   The shape holding device according to claim 3, wherein the extension side fixing member includes a panel member provided between the flanges when the flanges are separated from each other by extending the expansion / contraction part. 上記フランジの一方に取り付けられ上記伸縮部が縮退しているとき上記パネル部材をフランジに臨んで固定しておくパネル仮設部材を備えた請求項１〜４いずれかに記載の形状保持装置。   The shape holding device according to any one of claims 1 to 4, further comprising a panel temporary member attached to one of the flanges and configured to fix the panel member facing the flange when the expansion / contraction portion is retracted. 上記パネル仮設部材は、上記パネル部材を固定する面を上記フランジのフランジ面と面一に形成され、一対のフランジ間にパネル部材を設けるとき、パネル部材をガイドするように構成された請求項５記載の形状保持装置。   The panel temporary member is formed so that a surface for fixing the panel member is flush with a flange surface of the flange, and the panel member is guided when the panel member is provided between the pair of flanges. The shape holding device as described.
JP2005295002A 2005-10-07 2005-10-07 Shape retention device Expired - Fee Related JP4562636B2 (en)

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JP2009249846A (en) * 2008-04-02 2009-10-29 Nishimatsu Constr Co Ltd Circularity maintaining device
CN105888689B (en) * 2016-06-15 2019-05-28 中国铁建重工集团有限公司 Tunnel duct piece apparatus for shaping and development machine for development machine
CN105888688B (en) * 2016-06-15 2019-05-28 中国铁建重工集团有限公司 Tunnel duct piece apparatus for shaping and development machine for development machine
JP6918615B2 (en) * 2017-07-28 2021-08-11 川崎重工業株式会社 Shape retention device and shield excavator

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JPH0747516Y2 (en) * 1990-07-31 1995-11-01 石川島播磨重工業株式会社 Perfect circle holding device for shield machine
JPH11210397A (en) * 1998-01-26 1999-08-03 Japan Railway Constr Pub Corp Holding device for complete roundness of segment ring
JPH11229754A (en) * 1998-02-18 1999-08-24 Taisei Corp Pilot drift type shield drilling method and device
JP2000192793A (en) * 1998-12-24 2000-07-11 Hitachi Zosen Corp Apparatus for maintaining roundness of segment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0747516Y2 (en) * 1990-07-31 1995-11-01 石川島播磨重工業株式会社 Perfect circle holding device for shield machine
JPH11210397A (en) * 1998-01-26 1999-08-03 Japan Railway Constr Pub Corp Holding device for complete roundness of segment ring
JPH11229754A (en) * 1998-02-18 1999-08-24 Taisei Corp Pilot drift type shield drilling method and device
JP2000192793A (en) * 1998-12-24 2000-07-11 Hitachi Zosen Corp Apparatus for maintaining roundness of segment

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