JP5465050B2 - Segment joint structure and tunnel segment - Google Patents

Segment joint structure and tunnel segment Download PDF

Info

Publication number
JP5465050B2
JP5465050B2 JP2010055664A JP2010055664A JP5465050B2 JP 5465050 B2 JP5465050 B2 JP 5465050B2 JP 2010055664 A JP2010055664 A JP 2010055664A JP 2010055664 A JP2010055664 A JP 2010055664A JP 5465050 B2 JP5465050 B2 JP 5465050B2
Authority
JP
Japan
Prior art keywords
joint
segment
segments
joint structure
embedded
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.)
Active
Application number
JP2010055664A
Other languages
Japanese (ja)
Other versions
JP2010236348A (en
Inventor
均 浅野
誠 請川
賢二 下坂
禎久 野本
貴信 渡邉
典幸 山中
賢太郎 安井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toda Corp
Nippon Hume Corp
Original Assignee
Toda Corp
Nippon Hume Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toda Corp, Nippon Hume Corp filed Critical Toda Corp
Priority to JP2010055664A priority Critical patent/JP5465050B2/en
Publication of JP2010236348A publication Critical patent/JP2010236348A/en
Application granted granted Critical
Publication of JP5465050B2 publication Critical patent/JP5465050B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Lining And Supports For Tunnels (AREA)

Description

本発明は、シールド工法において、掘削後にシールド機内で周方向に組み立てられるとともに、組立済みのセグメントに対しトンネル軸方向に接続されるセグメントの継手構造及びこれを採用したトンネル用セグメントに関する。   The present invention relates to a joint structure for a segment which is assembled in a shield machine after excavation in a circumferential direction and connected to an assembled segment in the tunnel axial direction, and a tunnel segment employing the same.

トンネルのシールド工法は、シールド機で掘削を行いながら、該シールド機のスキンプレート後方部内で、断面円弧状等のセグメントを周方向に組み立てるとともに、組立済みのセグメントにトンネル軸方向に接続し、順次、トンネルを構築するトンネル工法である。   The tunnel shield construction method assembles segments such as arc-shaped sections in the circumferential direction in the rear part of the skin plate of the shield machine while excavating with the shield machine, and connects the assembled segments in the tunnel axis direction in order. It is a tunnel construction method to construct a tunnel.

従来より、前記セグメントの継手構造が数多く提案されている。トンネル周方向の継手は、一般的に「ピース間継手」と呼ばれ、組立済みのセグメントに対する継手は、一般的に「リング間継手」と呼ばれている。   Conventionally, many joint structures for the segment have been proposed. Tunnel circumferential joints are commonly referred to as “piece-to-piece joints” and joints to assembled segments are commonly referred to as “inter-ring joints”.

図15に示されるセグメント構造50(従来セグメント構造Aという。)は、トンネル軸方向の側面にほぞ部を設けたほぞ付セグメントの例であり、図16に示されるように、リング間継手及びピース間継手共に組立ボルト51,51…によって組立を行うようにしたものである。リング間継手は図17に示されるように、組立セグメント52側から組立済みセグメント53方向に向けて斜め方向に組立ボルト51を挿入することにより組立を行い、ピース間継手は図18に示されるように、隣接する一方のセグメント54から他方のセグメント55に向けて斜め方向に組立ボルト51を挿入することにより組立が行われる。このほぞ付セグメントでは、前記組立ボルト51は仮設材とされ、組立を終えたセグメントがシールド機の機外に出ると、周囲から受ける土水圧によってリング構造として安定する。   A segment structure 50 (referred to as a conventional segment structure A) shown in FIG. 15 is an example of a tenoned segment in which a tenon portion is provided on a side surface in the tunnel axial direction. As shown in FIG. Both the intermediate joints are assembled by assembly bolts 51, 51. As shown in FIG. 17, the inter-ring joint is assembled by inserting assembly bolts 51 in an oblique direction from the assembly segment 52 toward the assembled segment 53, and the inter-piece joint is shown in FIG. Then, assembly is performed by inserting the assembly bolt 51 in an oblique direction from the adjacent one segment 54 to the other segment 55. In this tenoned segment, the assembly bolt 51 is a temporary material, and when the assembled segment comes out of the shield machine, it is stabilized as a ring structure by the earth and water pressure received from the surroundings.

他方、近年は挿入又はスライド等によるワンタッチ方式でピース間及びリング間の継手を行うようにしたものも数多く提案されている。   On the other hand, in recent years, many proposals have been made to perform joints between pieces and rings by a one-touch method such as insertion or sliding.

例えば、下記特許文献1では、複数のセグメントを周方向に連結して地下空洞面を覆工するためのセグメント用継手であって、トンネル軸方向に延びた収容溝が設けられていると共にセグメント端部に固定された雌部材と、セグメント端部から突出する突出部と、前記突出部に隣接した連結部と、該連結部を可動に保持するための開口部が設けられた支持部材と、固定部材と、前記支持部材と前記固定部材との間に配置された弾性部材とを備える雄部材とを備え、前記支持部材の前記弾性部材に当接する側には該開口部に沿った突起が設けられ、該突起と固定部材とが接触することにより互いに隣接するセグメントを連結する締結力を発生するようにしたセグメント用継手が提案されている。   For example, in Patent Document 1 below, a joint for a segment for connecting a plurality of segments in the circumferential direction to cover an underground cavity surface, and is provided with a receiving groove extending in the tunnel axis direction and at the end of the segment A female member fixed to the part, a protruding part protruding from the end of the segment, a connecting part adjacent to the protruding part, and a supporting member provided with an opening for holding the connecting part movably A male member comprising a member and an elastic member disposed between the support member and the fixing member, and a protrusion along the opening is provided on the side of the support member that contacts the elastic member In addition, there has been proposed a joint for a segment that generates a fastening force for connecting adjacent segments by contacting the protrusion and the fixing member.

また、下記特許文献2では、シールドセグメントに用いられるスライドロック型のリング間継手であって、連結突起収容部と締結部材とを備える雌金具と、拡張部を備えた連結突起を備える雄金具とを備え、前記締結部材は、セグメントの周方向に延び前記拡張部の径よりも狭幅のスロットと前記スロットの両側に形成され前記連結突起の前記拡張部を収容する複数の開口とを備え、前記締結部材の前記拡張部と当接する面は、前記複数の開口から前記スロットに沿って前記締結部材の厚さを厚くするテーパを備えるリング間継手が提案されている。   Further, in Patent Document 2 below, a slide lock type ring-to-ring joint used for a shield segment, a female fitting provided with a connecting projection receiving portion and a fastening member, and a male fitting provided with a connecting projection provided with an expansion portion, The fastening member includes a slot extending in a circumferential direction of a segment and having a width narrower than a diameter of the extension portion, and a plurality of openings formed on both sides of the slot to accommodate the extension portion of the connection protrusion, An inter-ring joint having a taper that increases the thickness of the fastening member along the slot from the plurality of openings is proposed on the surface of the fastening member that contacts the extended portion.

さらに下記特許文献3では、一方のセグメントと他方のセグメントとを互いに連結するセグメント継手構造において、前記一方のセグメントの継手板の外面に突設された、開口を有するストッパー支持用管体と、前記ストッパー支持用管体内に嵌め込まれるストッパーと、前記他方のセグメントの継手板に形成された、前記ストッパー支持用管体が挿入される継手孔とからなり、前記ストッパーは、弾性部材と前記弾性部材に固定されたピンとからなり、前記ピンは、前記ストッパー支持用管体が前記継手孔内に挿入されたときに、前記弾性部材の弾性力によって前記開口から突出して、前記他方のセグメントの継手板に係合するセグメント継手構造が提案されている。   Furthermore, in the following Patent Document 3, in a segment joint structure that connects one segment and the other segment to each other, a stopper supporting tube body that has an opening projecting from the outer surface of the joint plate of the one segment, A stopper fitted into the stopper supporting tube, and a joint hole formed in the joint plate of the other segment into which the stopper supporting tube is inserted. The stopper is formed on the elastic member and the elastic member. The pin is fixed to the joint plate of the other segment by protruding from the opening by the elastic force of the elastic member when the stopper supporting tube is inserted into the joint hole. Engaging segment joint structures have been proposed.

特開2001−234696号公報JP 2001-234696 A 特開2006−266024号公報JP 2006-266024 A 特開2006−45940号公報JP 2006-45940 A

しかしながら、上記従来セグメント構造Aは、海外及び日本において多くの実績を有するセグメント継手構造であるが、ピース間及びリング間継手のすべてを継手部に組立ボルト51、51…を使用するものであり、組立ボルト51の挿入・締結に時間が掛かるとともに、ボルト挿入孔へのモルタル充填が必要となり、セグメント組立作業に多くの手間と時間が掛かるため組立作業が効率化かつ省力化しないなどの問題があった。   However, the above conventional segment structure A is a segment joint structure having many achievements in overseas and Japan, but uses assembly bolts 51, 51... It takes time to insert and fasten the assembly bolts 51, and it is necessary to fill the bolt insertion holes with mortar, which requires a lot of labor and time for the segment assembly work, resulting in problems such as efficient assembly and labor saving. It was.

上記特許文献1〜3に係る継手構造は、所謂ワンタッチ方式でセグメントの継手を完結することが可能であり、セグメントの組立作業が大幅に効率化できるものの、それぞれの継手構造は特注品であり、製作コストが嵩むなどの問題があった。   The joint structures according to Patent Documents 1 to 3 can complete the joints of the segments by the so-called one-touch method, and the assembly work of the segments can be greatly improved, but each joint structure is a custom-made product, There were problems such as increased production costs.

そこで本発明の主たる課題は、汎用材を使用した継手構造とすることにより継手コストの大幅な低減を図ったワンタッチ方式の継手構造と、これを採用したトンネル用セグメントを提案することにある。   Accordingly, a main problem of the present invention is to propose a one-touch joint structure that greatly reduces joint costs by using a joint structure using a general-purpose material, and a tunnel segment that employs this joint structure.

前記課題を解決するために請求項1に係る本発明として、掘削後にシールド機内で周方向に組み立てられるとともに、組立済みのセグメントに対しトンネル軸方向に接続されるセグメントの継手構造であって、
前記セグメントは、周方向にセグメント間の接続を行うピース間継手と、トンネル軸方向にセグメント間の接続を行うリング間継手とを備え、
前記ピース間継手及びリング間継手の内の一方側の継手構造は、隣接するセグメントの一方側が露出部分に溝型形状の切欠きが形成された埋設鋼板による雌側継手とされ、隣接するセグメントの他方側がネジ節鋼棒の突出頭部にナットが螺合された雄側継手とされ、前記埋設鋼板の溝型形状切欠きと前記ネジ節鋼棒のナット部とを嵌合させることによりセグメント同士を接合するにあたり、前記雄側継手のナットに平ワッシャーを設けておき、ネジ節鋼棒を若干斜め方向に傾斜させて埋設するとともに、前記雌側継手を成す埋設鋼板を前記ネジ節鋼棒の方向に沿って配置することにより、前記埋設鋼板の溝型形状切欠きと前記ネジ節鋼棒のナット部とを嵌合させる際にセグメントを引寄せて接合面を密着させるようにしたことを特徴とするセグメントの継手構造が提供される。
In order to solve the above problems, the present invention according to claim 1 is a joint structure of a segment that is assembled in a circumferential direction in a shield machine after excavation, and connected to the assembled segment in the tunnel axial direction,
The segment includes an inter-piece joint that connects the segments in the circumferential direction, and an inter-ring joint that connects the segments in the tunnel axis direction,
The joint structure on one side of the piece-to-piece joint and the ring-to-ring joint is such that one side of an adjacent segment is a female-side joint made of a buried steel plate with a groove-shaped notch formed in the exposed portion. The other side is a male joint in which a nut is screwed into the protruding head of the threaded steel bar, and the segments are formed by fitting the grooved notch of the buried steel sheet and the nut part of the threaded steel bar. In joining the male side joint, a flat washer is provided on the nut of the male side joint, and the threaded steel bar is embedded in a slightly inclined direction, and the embedded steel sheet forming the female side joint is attached to the threaded steel bar. When the groove-shaped notch of the buried steel plate and the nut portion of the screw-carrying steel bar are fitted together by arranging them along the direction, the segments are brought close together so that the joint surfaces are brought into close contact with each other. And Joint structure of the instrument is provided.

上記請求項1記載の発明は、露出部分に溝型形状の切欠きが形成された埋設鋼板による雌側継手と、ネジ節鋼棒の突出頭部にナットが螺合された雄側継手とによる継手構造とするものである。前記埋設鋼板及びネジ節鋼棒は一般的によく使用される汎用材であり、安価に入手が可能であるため、継手コストの大幅な低減を図ることが可能となる。   The invention according to claim 1 is based on a female side joint made of an embedded steel plate having a groove-shaped notch formed in an exposed portion, and a male side joint in which a nut is screwed onto the protruding head of a threaded steel bar. It has a joint structure. The buried steel plate and the threaded steel bar are generally used general-purpose materials and can be obtained at low cost, so that the joint cost can be greatly reduced.

また、前記雄側継手のナットに平ワッシャーを設けておき、ネジ節鋼棒を若干斜め方向に傾斜させて埋設するとともに、前記雌側継手を成す埋設鋼板を前記ネジ節鋼棒の方向に沿って配置することにより、前記埋設鋼板の溝型形状切欠きと前記ネジ節鋼棒のナット部とを嵌合させる際にセグメントを引寄せて接合面を密着させるようにしてあるため、前記埋設鋼板の溝型形状切欠きと前記ネジ節鋼棒のナット部とを嵌合させる際に、前記平ワッシャと溝型形状切欠きとが斜め方向に摺接することになり、セグメントを引寄せて接合面を密着させることが可能となる。Further, a flat washer is provided on the nut of the male side joint, and the threaded steel bar is embedded in a slightly inclined direction, and the embedded steel sheet forming the female side joint is disposed along the direction of the threaded steel bar. When the groove-shaped notch of the buried steel plate and the nut portion of the threaded steel rod are fitted to each other, the segments are drawn to bring the joining surface into close contact with each other. The flat washer and the groove-shaped notch are in sliding contact with each other in an oblique direction when the groove-shaped notch and the nut portion of the thread-saving steel bar are fitted together, and the segment is drawn to join the surface. Can be brought into close contact with each other.

請求項2に係る本発明として、前記雌側継手は箱抜き内に設けられ、該箱抜き部以外でセグメント同士の接合面が密着している請求項1記載のセグメントの継手構造が提供される。   According to a second aspect of the present invention, there is provided the joint structure for a segment according to the first aspect, wherein the female side joint is provided in a box and the joint surfaces of the segments are in close contact with each other except for the box. .

上記請求項2記載の発明は、前記雌側継手は箱抜き内に設けるようにし、該箱抜き部以外でセグメント同士の接合面が密着している構造とすることにより、前記箱抜き部が露出しない構造とするものである。従って、セグメントの接合後に箱抜き部へのモルタル充填を省略でき、作業を省力化することが可能となる。   In the invention according to the second aspect, the female side joint is provided in a box, and the boxed portion is exposed by adopting a structure in which the joint surfaces of the segments other than the boxed portion are in close contact with each other. The structure does not. Therefore, it is possible to omit the mortar filling of the box opening portion after joining the segments, and the labor can be saved.

請求項3に係る本発明として、前記ピース間継手及びリング間継手の内の他方側の継手構造は、挿入式のワンタッチ継手としてある請求項1、2いずれかに記載のセグメントの継手構造が提供される。   According to a third aspect of the present invention, the joint structure on the other side of the joint between pieces and the joint between rings is an insertion type one-touch joint. A joint structure for a segment according to any one of the first and second aspects is provided. Is done.

上記請求項3記載の発明は、前記ピース間継手及びリング間継手の内の他方側の継手構造は、挿入式のワンタッチ継手とするものである。前記ピース間継手及びリング間継手の内の一方側を前述したスライド式ワンタッチ継手とする関係上、他方側の継手は挿入式のワンタッチ継手とするのが望ましい。   In the invention according to the third aspect, the joint structure on the other side of the joint between pieces and the joint between rings is an insertion type one-touch joint. Since one side of the piece-to-piece joint and the ring-to-ring joint is the above-described slide-type one-touch joint, the other-side joint is preferably an insertion-type one-touch joint.

請求項に係る本発明として、前記埋設鋼板は、コンクリート内部に埋設されるアンカー筋に対して溶接によって連結されている請求項1〜いずれかに記載のセグメントの継手構造が提供される。 According to a fourth aspect of the present invention, there is provided the joint structure of segments according to any one of the first to third aspects, wherein the embedded steel plate is connected to an anchor bar embedded in the concrete by welding.

上記請求項記載の発明では、前記埋設鋼板をアンカー筋に対して溶接によって連結することにより、アンカー筋により継手に作用する力をスムーズにコンクリート内部に伝達できるとともに、継手の強度を向上させることが可能となる。 In the invention of claim 4, by connecting the buried steel plate to the anchor bar by welding, the force acting on the joint by the anchor bar can be smoothly transmitted to the inside of the concrete, and the strength of the joint is improved. Is possible.

請求項に係る本発明として、前記埋設鋼板には開孔が設けられるとともに、コンクリート内部に埋設されるアンカー筋がU字状に形成され、
前記埋設鋼板は、前記開孔に前記アンカー筋を挿嵌させることによって連結されている請求項1〜いずれかに記載のセグメントの継手構造が提供される。
As the present invention according to claim 5 , the embedded steel plate is provided with an opening, and an anchor bar embedded in the concrete is formed in a U shape,
The joint structure of the segment in any one of Claims 1-4 with which the said embedded steel plate is connected by inserting the said anchor reinforcement in the said opening.

上記請求項記載の発明では、埋設鋼板に開孔を設けるとともにアンカー筋をU字状に形成し、この埋設鋼板の開孔に前記アンカー筋を挿嵌させることによって連結することにより、前記アンカー筋により継手に作用する力をスムーズにコンクリート内部に伝達できるとともに、継手の強度を向上させることが可能となる。さらに、埋設鋼板とアンカー筋との接続部分が短くてすむので、前記埋設鋼板の小型化が可能である。 In the invention of claim 5 , the anchor is formed by providing an opening in the buried steel sheet and forming an anchor bar in a U-shape, and connecting the anchor bar by inserting the anchor bar into the hole in the buried steel plate. The force acting on the joint by the streaks can be smoothly transmitted into the concrete, and the strength of the joint can be improved. Furthermore, since the connection portion between the buried steel plate and the anchor bar is short, the buried steel plate can be miniaturized.

請求項に係る本発明として、前記リング間継手面において、一方のセグメントに形成されたほぞと、他方のセグメントに形成されたほぞ穴とを嵌合させるようにしてある請求項1〜いずれかに記載のセグメントの継手構造が提供される。 As the present invention according to claim 6, in the joint surface between the ring and the tenons formed in one segment, one of claims 1-5 that is as fitting the tenon hole formed in the other segment A segment joint structure is provided.

上記請求項記載の発明は、所謂ほぞ付セグメントとしたものである。 The invention described in claim 6 is a so-called tenoned segment.

請求項に係る本発明として、前記ほぞ穴を有する側のセグメントにおいて、前記ほぞ穴に近接したコンクリート内部にせん断補強筋の他に、該ほぞ穴を囲むように周方向に閉合した額縁補強筋を配設してある請求項記載のセグメントの継手構造が提供される。 As the present invention according to claim 7 , in the segment on the side having the mortise, in addition to the shear reinforcement inside the concrete adjacent to the mortise, a frame reinforcement which is closed in the circumferential direction so as to surround the mortise A joint structure for a segment according to claim 6 is provided.

上記請求項記載の発明は、ほぞ部に通常配設されるせん断補強筋の他に、ほぞ穴を囲むように周方向に閉合した額縁補強筋を配設することにより、従来のほぞ部のせん断耐力と比較して、大幅な耐力増加を図ったものである。 In the invention according to the seventh aspect , in addition to the shear reinforcement bars normally disposed in the tenon portion, the frame reinforcement bars which are closed in the circumferential direction so as to surround the tenon holes are disposed. Compared to the shear strength, the strength is significantly increased.

請求項に係る本発明として、請求項1〜いずれかに記載の雌側継手と雄側継手とを備えたことを特徴とするトンネル用セグメントが提供される。 According to an eighth aspect of the present invention, there is provided a tunnel segment comprising the female side joint and the male side joint according to any one of the first to seventh aspects.

以上詳説のとおり本発明によれば、汎用材を使用した継手構造とすることにより継手コストの大幅な低減を図ったワンタッチ方式の継手構造とすることが可能となる。   As described above in detail, according to the present invention, a joint structure using a general-purpose material can be used to provide a one-touch joint structure that greatly reduces joint costs.

本発明に係る継手構造を採用したトンネル2の横断面図である。It is a cross-sectional view of the tunnel 2 which employ | adopted the joint structure which concerns on this invention. その縦断面図(図1のII−II線矢視図)である。It is the longitudinal cross-sectional view (II-II arrow directional view of FIG. 1). 本発明に係るセグメント1を示す、(A)は正面図、(B)は平面図、(C)は底面図である。The segment 1 which concerns on this invention is shown, (A) is a front view, (B) is a top view, (C) is a bottom view. 本発明に係るセグメント1の側面図である。It is a side view of the segment 1 which concerns on this invention. 雌側継手5を示す、(A)は断面図、(B)は平面図である。The female side joint 5 is shown, (A) is a sectional view, and (B) is a plan view. 他の形態の雌側継手5と雄側継手6との接合状態を示す、(A)は断面図、(B)は平面図である。The joining state of the female side joint 5 of another form and the male side joint 6 is shown, (A) is sectional drawing, (B) is a top view. 雄側継手6を示す、(A)は断面図、(B)は平面図である。The male joint 6 is shown, (A) is a cross-sectional view, and (B) is a plan view. 雌側継手5と雄側継手6との接合要領図である。It is a joint procedure figure of female side joint 5 and male side joint 6. 雌側継手5と雄側継手6との接合状態を示す、(A)は平面図、(B)は側面図である。The joining state of the female side joint 5 and the male side joint 6 is shown, (A) is a top view, (B) is a side view. リング間継手のほぞ部を示す、(A)は断面図、(B)はA-A矢視図、(C)はC-C矢視図である。10A and 10B are sectional views, FIG. 9B is a sectional view taken along the line AA, and FIG. セグメント1の接合要領を示す縦断面図である。It is a longitudinal cross-sectional view which shows the joining procedure of the segment 1. FIG. 雌側継手5及び雄側継手6の第2形態例を示す、(A)は嵌合要領図、(B)は嵌合状態図である。The 2nd example of the female side joint 5 and the male side joint 6 is shown, (A) is a fitting procedure figure, (B) is a fitting state figure. 実施例におけるほぞ部の三次元FEM解析モデル図である。It is a three-dimensional FEM analysis model figure of the tenon part in an Example. 実施例におけるせん断耐力比較図である。It is a shear strength comparison figure in an Example. 従来セグメント構造Aを示す横断面図である。It is a cross-sectional view showing a conventional segment structure A. その縦断面図(図15のXVI−XVI線矢視図)である。It is the longitudinal cross-sectional view (XVI-XVI arrow directional view of FIG. 15). リング間継手の拡大断面図である。It is an expanded sectional view of a joint between rings. ピース間継手の拡大断面図である。It is an expanded sectional view of a joint between pieces.

以下、本発明の実施の形態について図面を参照しながら詳述する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図1及び図2に示されるように、セグメント1、1…は、掘削後にシールド機内で周方向に組み立てられるとともに、組立済みのセグメントに対しトンネル軸方向に接続され、トンネル2を構築するものである。   As shown in FIGS. 1 and 2, the segments 1, 1,... Are assembled in the shield machine in the circumferential direction after excavation, and connected to the assembled segment in the tunnel axial direction to construct the tunnel 2. is there.

前記セグメント1は、図2に示されるように、周方向にセグメント間の接続を行うピース間継手3,3…と、トンネル軸方向にセグメント間の接続を行うリング間継手4,4…とを備える。   As shown in FIG. 2, the segment 1 includes inter-piece joints 3, 3... For connecting the segments in the circumferential direction, and inter-ring joints 4, 4. Prepare.

本発明に係るセグメント1では、前記ピース間継手3,3…及びリング間継手4,4…の内の一方側の継手構造、図示例ではピース間継手3は、隣接するセグメントの一方側が露出部分に溝型形状の切欠き11aが形成された埋設鋼板11による雌側継手5とされ、隣接するセグメントの他方側がネジ節鋼棒の突出頭部にナットが螺合された雄側継手6とされ、前記埋設鋼板11の溝型形状切欠き11aと前記ネジ節鋼棒12のナット13部とを嵌合させることによりセグメント同士が接合される。また、前記ピース間継手3,3…及びリング間継手4,4…の内の他方側の継手構造、図示例ではリング間継手4は、挿入式のワンタッチ継手によりセグメント同士が接合されている。   In the segment 1 according to the present invention, the joint structure on one side of the inter-piece joints 3, 3,... And the inter-ring joints 4, 4,. The female joint 5 is made of an embedded steel plate 11 in which a groove-shaped notch 11a is formed, and the other side of the adjacent segment is a male joint 6 in which a nut is screwed onto the protruding head of a threaded steel rod. The segments are joined to each other by fitting the groove-shaped notch 11a of the buried steel plate 11 and the nut 13 of the threaded steel rod 12 together. Further, in the joint structure on the other side of the joints between pieces 3, 3,... And the joints between rings 4, 4,..., In the illustrated example, the inter-ring joint 4 is joined to each other by an insertion type one-touch joint.

以下、更に図3〜図9に基づいて具体的に詳述する。   Hereinafter, it will be specifically described in detail with reference to FIGS.

図3において、セグメント1は、トンネル周方向側の両端面に夫々、ピース間継手3,3を備えるとともに、トンネル軸方向側の両端面に夫々、リング間継手4,4を備えている。   In FIG. 3, the segment 1 includes the inter-piece joints 3 and 3 on both end faces on the tunnel circumferential direction side, and the inter-ring joints 4 and 4 on both end faces on the tunnel axial direction side, respectively.

前記トンネル周方向側端面の一方側(上側)には、図3(B)に示されるように、露出部分に溝型形状の切欠き11aが形成された埋設鋼板11による雌側継手5を坑口側に備えるとともに、ネジ節鋼棒12の突出頭部にナット13が螺合された雄側継手6を切羽側に備える。また、トンネル周方向側端面の他方側(下側)には、図3(C)に示されるように、露出部分に溝型形状の切欠き11aが形成された埋設鋼板11による雌側継手5を切羽側に備えるとともに、ネジ節鋼棒12の突出頭部にナット13が螺合された雄側継手6を坑口側に備える。   On one side (upper side) of the end surface in the circumferential direction of the tunnel, as shown in FIG. 3 (B), a female side joint 5 made of a buried steel plate 11 having a groove-shaped notch 11a formed in an exposed portion is provided as a wellhead. The male side joint 6 in which the nut 13 is screwed to the protruding head of the thread-saving steel bar 12 is provided on the face side. Further, on the other side (lower side) of the end surface in the circumferential direction of the tunnel, as shown in FIG. 3 (C), a female side joint 5 made of an embedded steel plate 11 having a groove-shaped notch 11a formed in the exposed portion. Is provided on the face side, and a male joint 6 in which a nut 13 is screwed onto the protruding head of the thread-saving steel bar 12 is provided on the wellhead side.

また、セグメント1の坑口側端面には複数の、図示例では4つのほぞ部7,7…を有するとともに、切羽側端面には前記ほぞ部7に対応した位置にほぞ穴8,8…を有する。なお、内面中央にはシールド機に備えられたエレクタの係合部9を有する。   The segment 1 has a plurality of ten mortise portions 7, 7... In the illustrated example, and the face side end surface has mortise holes 8, 8... At positions corresponding to the tenon portions 7. . In addition, it has the engaging part 9 of the erector with which the shield machine was equipped in the inner surface center.

前記雌側継手5は、詳細には図5に示されるように、コンクリート内部に埋設される1又は複数の、図示例では2本のアンカー筋10,10に対して、溝型形状の切欠き11aが形成された鋼板11を溶接等によって連結した金具である。前記アンカー筋10及び鋼板11は市場において安価かつ容易に入手し得る部材である。前記雌側継手5は、セグメント製作時にコンクリート内に埋設され、この際、前記溝型形状の切欠き11aが露出するように箱抜き部1aが形成される。前記箱抜き部1a以外の面は他のセグメントの接合面とされ、接合状態では、前記箱抜き部1aは外部に露出しないようになっている。   As shown in detail in FIG. 5, the female side joint 5 has a groove-shaped notch with respect to one or a plurality of anchor bars 10, 10 in the illustrated example embedded in the concrete. It is the metal fitting which connected the steel plate 11 in which 11a was formed by welding. The anchor bars 10 and the steel plate 11 are members that are inexpensive and easily available on the market. The female side joint 5 is embedded in the concrete when the segment is manufactured, and at this time, the box-cut portion 1a is formed so that the groove-shaped notch 11a is exposed. Surfaces other than the box-opening portion 1a are used as joint surfaces of other segments, and the box-opening portion 1a is not exposed to the outside in the joined state.

前記鋼板11は、図5に示されるように、アンカー筋10,10に対して重ね合わせ代を設けて配設するとともに、この重ね合わせ代を溶接することによって連結することが好ましい。これにより、アンカー筋10,10により雌側継手5に作用する力をスムーズにコンクリート内部に伝達できるとともに、雌側継手5の強度を向上させることが可能となる。   As shown in FIG. 5, it is preferable that the steel plate 11 is disposed by providing an overlap margin with respect to the anchor bars 10, 10 and is connected by welding the overlap margin. Thereby, the force acting on the female side joint 5 by the anchor bars 10 and 10 can be smoothly transmitted to the inside of the concrete, and the strength of the female side joint 5 can be improved.

また、図6に示されるように、鋼板11に開孔11bを設けるとともに、アンカー筋10をU字状に形成しておき、この鋼板11の開孔11bにアンカー筋10を挿嵌させ、U字状の折り返し頂部で係合させておくことによって連結することもできる。これにより、アンカー筋10,10により雌側継手5に作用する力をスムーズにコンクリート内部に伝達できるとともに、雌側継手5の強度を向上させることが可能となることに加えて、鋼板11とアンカー筋10との接続部分が短くてすむので、鋼板11の小型化が可能である。   Further, as shown in FIG. 6, the steel plate 11 is provided with the opening 11b, the anchor bar 10 is formed in a U shape, the anchor bar 10 is inserted into the hole 11b of the steel plate 11, and the U It can also connect by making it engage in the character-like folding | turning top part. Thus, the force acting on the female side joint 5 by the anchor bars 10, 10 can be smoothly transmitted to the inside of the concrete, and the strength of the female side joint 5 can be improved. In addition, the steel plate 11 and the anchor Since the connection portion with the bar 10 can be short, the steel plate 11 can be downsized.

前記雄側継手6は、詳細には図7に示されるように、先端部を外部に突出させた状態でネジ節鋼棒12がコンクリート内部に埋設されるとともに、突出部分にナット13が螺合されるとともに、ナット13の内側にテーパーワッシャ14が設けられている。   As shown in detail in FIG. 7, the male side joint 6 has a threaded steel rod 12 embedded in the concrete with its tip protruding outside, and a nut 13 screwed into the protruding portion. In addition, a tapered washer 14 is provided inside the nut 13.

図3及び図5から分かるように、前記雌側継手5は周方向に対して傾斜させて配置され、前記雄側継手6は周方向に沿って配設されている。前記雌側継手5の傾斜角度は、前記雄側継手6のテーパーワッシャ14の傾斜面に対してほぼ法線方向となる方向に配置されている。   As can be seen from FIGS. 3 and 5, the female side joint 5 is disposed to be inclined with respect to the circumferential direction, and the male side joint 6 is disposed along the circumferential direction. The inclination angle of the female side joint 5 is arranged in a direction substantially normal to the inclined surface of the taper washer 14 of the male side joint 6.

前記雌側継手5と雄側継手6とを接続するには、図8に示されるように、雄側継手6の突出部分を雌側継手5の箱抜き部1a内に挿入し、そのままセグメントをスライドさせることにより、前記埋設鋼板11の溝型形状切欠き11aと前記ネジ節鋼棒12のナット13及びテーパーワッシャ14とを嵌合させてセグメント1,1同士を接合する。この際、前記テーパーワッシャ14の傾斜面が溝型形状切欠き11aとが傾斜方向に接触することにより、セグメントが引き寄せられ、接合面が密着するようになる。図9は接合状態を示したものであるが、セグメント1の接合面同士は密着し、従来セグメントのようにトンネル内面に箱抜き部が露出せず、内面の平滑化が図れるため、箱抜き部にモルタル充填する必要がない。   In order to connect the female side joint 5 and the male side joint 6, as shown in FIG. 8, the protruding part of the male side joint 6 is inserted into the box opening part 1 a of the female side joint 5, and the segment is left as it is. By sliding, the groove-shaped notch 11a of the embedded steel plate 11, the nut 13 and the taper washer 14 of the threaded steel rod 12 are fitted, and the segments 1 and 1 are joined. At this time, when the inclined surface of the taper washer 14 is brought into contact with the groove-shaped notch 11a in the inclined direction, the segments are attracted and the bonding surface comes into close contact. Although FIG. 9 shows a joined state, the joining surfaces of the segments 1 are in close contact with each other, and the box opening is not exposed on the tunnel inner surface as in the conventional segment, and the inner surface can be smoothed. There is no need for mortar filling.

一方、組立済みのセグメントに対するトンネル軸方向の接続は、挿入式のワンタッチ継手とする。挿入式のワンタッチ継手構造としては、従来より種々のものが提案されているが、本出願人の1人が特開2001−159298号公報にて提案したクサビ方式のワンタッチ継手を好適に用いることができる。該ワンタッチ継手は、互いに接合される構造体の接合端面にそれぞれ設けられた接合筒の係合穴に、両端部に形成された穴部へ駒部材が嵌合されて取り付けられた接合棒の両端部をそれぞれ挿入させて前記各構造体の前記接合端面同士を近接させることにより、前記駒部材によって前記接合棒が押し広げられて前記接合筒の前記係合穴の内周面に押し付けられ、前記接合棒の両端部が前記接合筒に係合されて前記構造体同士が接合される接合構造であり、前記接合筒には、前記係合穴の底部に支持孔が形成され、前記駒部材の内の少なくとも一方には、前記支持孔に嵌合する嵌合突起が設けられ、該嵌合突起を前記支持孔へ嵌合させることにより、前記接合棒が前記接合筒に挿入された状態に保持されるようにした継手構造である。なお、該ワンタッチ継手の詳細な説明は同公報に譲るとする。   On the other hand, the tunnel axial connection to the assembled segment is an insertion type one-touch joint. Various types of insertion-type one-touch joint structures have been conventionally proposed. One of the present applicants preferably uses a wedge-type one-touch joint proposed in Japanese Patent Laid-Open No. 2001-159298. it can. The one-touch joint has both ends of a joining rod attached by fitting a piece member to a hole formed in both ends of the joining tube provided in a joining end surface of a structure to be joined to each other. By inserting the respective parts and bringing the joint end surfaces of the respective structures close to each other, the joint rod is pushed and spread by the piece member and pressed against the inner peripheral surface of the engagement hole of the joint cylinder, A joining structure in which both ends of the joining rod are engaged with the joining cylinder and the structures are joined to each other. The joining cylinder has a support hole formed at the bottom of the engagement hole, At least one of them is provided with a fitting projection that fits into the support hole, and the fitting rod is fitted into the support hole to hold the joining rod inserted in the joining cylinder. This is a joint structure. The detailed description of the one-touch joint is left to the same publication.

他方、リング間継手面に形成されたほぞ部7とほぞ穴8との嵌合部では、図10に示されるように、ほぞ穴8を有する側のセグメントにおいて、前記ほぞ穴8に近接したコンクリート内部にせん断補強筋15,16の他に、該ほぞ穴8を囲むように周方向に閉合した額縁補強筋17を配設してある。前記せん断補強筋15,16は、通常配設されるせん断補強筋であるが、ほぞ穴8を囲むように周方向に閉合した額縁補強筋17を配設することにより、前記せん断補強筋15,16のみを配設する場合と比べて、約1.8倍の耐力向上効果を有するようになる。   On the other hand, in the fitting portion between the mortise portion 7 and the mortise 8 formed on the joint surface between the rings, as shown in FIG. 10, in the segment on the side having the mortise 8, the concrete close to the mortise 8 In addition to the shear reinforcement bars 15 and 16, a frame reinforcement bar 17 closed in the circumferential direction is disposed so as to surround the mortise 8. The shear reinforcement bars 15 and 16 are normally arranged shear reinforcement bars. However, by arranging the frame reinforcement bars 17 that are closed in the circumferential direction so as to surround the mortise 8, the shear reinforcement bars 15 and 16 are arranged. Compared with the case where only 16 is provided, the yield strength is improved by about 1.8 times.

以上詳述したセグメント1を組み立てるには、図11に示されるように、雄側継手6を箱抜き部1a内に差し込んだ後、切羽側からセグメント1を坑口側方向にスライドさせるだけで、リング間継手4,4の接合と、ピース間継手3の接合とを同時に行うことが可能となる。   In order to assemble the segment 1 described in detail above, as shown in FIG. 11, the male side joint 6 is inserted into the box opening portion 1a, and then the segment 1 is simply slid from the face side toward the wellhead side. It becomes possible to join the joints 4 and 4 and the piece joint 3 at the same time.

〔第2形態例〕
上記第1形態例では、雄側継手6のナット13にテーパーワッシャ14を設けておき、前記雌側継手5を成す埋設鋼板11を前記テーパーワッシャ14の面に対してほぼ法線方向となる方向に配置することにより、前記埋設鋼板11の溝型形状切欠き11aと前記ネジ節鋼棒12のナット13部とを嵌合させる際にセグメント1を引寄せて接合面を密着させるようにしたが、図12に示されるように、雄側継手6のナット13に平ワッシャ18を設けておき、ネジ節鋼棒12を若干斜め方向に傾斜させて埋設するとともに、前記雌側継手5を成す埋設鋼板11を前記ネジ節鋼棒の方向に沿って配置することにより、前記埋設鋼板11の溝型形状切欠き11aと前記ネジ節鋼棒12のナット13及び平ワッシャ18とを嵌合させる際にセグメント1を引寄せて接合面を密着させるようにしてもよい。
[Second embodiment]
In the first embodiment, a taper washer 14 is provided on the nut 13 of the male side joint 6, and the embedded steel plate 11 forming the female side joint 5 is in a direction substantially normal to the surface of the taper washer 14. When the groove-shaped notch 11a of the buried steel plate 11 and the nut 13 portion of the threaded steel rod 12 are fitted to each other, the segment 1 is attracted to bring the joint surface into close contact with each other. 12, a flat washer 18 is provided on the nut 13 of the male side joint 6, and the threaded steel rod 12 is embedded in a slightly inclined direction, and the female side joint 5 is embedded. When the steel plate 11 is arranged along the direction of the threaded steel rod, the groove-shaped notch 11a of the buried steel plate 11 and the nut 13 and the flat washer 18 of the threaded steel rod 12 are fitted together. Segment 1 may be brought into close contact with the bonding surface by attracting a.

〔他の形態例〕
(1)上記形態例では、トンネル周方向側の両端面において、雌側継手5,5と雄側継手6,6とを対角線配置としたが、一方側端面に雌側継手5,5を配置し、他方側端面に雄側継手6,6を配置するようにしてもよい。
(2)上記形態例では、箱抜き部1aを側端面まで連続させ端面を開口としたが、凹部状に形成してもよい。
[Other examples]
(1) In the above embodiment, the female joints 5 and 5 and the male joints 6 and 6 are diagonally arranged on both end faces in the circumferential direction of the tunnel, but the female joints 5 and 5 are arranged on one end face. And you may make it arrange | position the male side couplings 6 and 6 in the other side end surface.
(2) In the above embodiment, the box opening portion 1a is continued to the side end surface and the end surface is opened, but it may be formed in a concave shape.

セグメント1のリング間継手面のほぞ部に配置した額縁補強筋17の補強効果について、三次元FEM解析により検証した。図13に示される三次元FEM解析モデルを想定し、ほぞ穴部にせん断力を作用させて、中央底での変位量とせん断力との関係を調べた。その結果を図14に示す。同図から明らかなように、中央底変位量で0.5mmの時のせん断耐力を比較すると、額縁補強筋有りのケースはせん断耐力450kNであるのに対して、額縁補強筋無しのケースはせん断耐力は250kNであり、額縁補強筋を配置することで、約1.8倍の耐力増強効果が見込めることが判明した。   The reinforcing effect of the frame reinforcing bars 17 arranged at the tenon portion of the joint surface between the rings of the segment 1 was verified by a three-dimensional FEM analysis. Assuming the three-dimensional FEM analysis model shown in FIG. 13, a shear force was applied to the mortise and the relationship between the displacement at the center bottom and the shear force was examined. The result is shown in FIG. As is apparent from the figure, when the shear strength when the center bottom displacement is 0.5 mm is compared, the case with the frame reinforcement has a shear strength of 450 kN, whereas the case without the frame reinforcement has shear. The yield strength is 250 kN, and it has been found that the reinforcement effect of about 1.8 times can be expected by arranging the frame reinforcing bars.

1…セグメント、2…トンネル、3…ピース間継手、4…リング間継手、5…雌側継手、6…雄側継手、7…ほぞ、8…ほぞ穴、10…アンカー筋、11…鋼板、12…ネジ節鋼棒、13…ナット、14…テーパーワッシャ、15・16…せん断補強筋、17…額縁補強筋、18…平ワッシャ   DESCRIPTION OF SYMBOLS 1 ... Segment, 2 ... Tunnel, 3 ... Joint between pieces, 4 ... Joint between rings, 5 ... Female side joint, 6 ... Male side joint, 7 ... Tenon, 8 ... Mortise hole, 10 ... Anchor bar, 11 ... Steel plate, 12 ... Threaded steel bar, 13 ... Nut, 14 ... Taper washer, 15.16 ... Shear reinforcement, 17 ... Frame reinforcement, 18 ... Flat washer

Claims (8)

掘削後にシールド機内で周方向に組み立てられるとともに、組立済みのセグメントに対しトンネル軸方向に接続されるセグメントの継手構造であって、
前記セグメントは、周方向にセグメント間の接続を行うピース間継手と、トンネル軸方向にセグメント間の接続を行うリング間継手とを備え、
前記ピース間継手及びリング間継手の内の一方側の継手構造は、隣接するセグメントの一方側が露出部分に溝型形状の切欠きが形成された埋設鋼板による雌側継手とされ、隣接するセグメントの他方側がネジ節鋼棒の突出頭部にナットが螺合された雄側継手とされ、前記埋設鋼板の溝型形状切欠きと前記ネジ節鋼棒のナット部とを嵌合させることによりセグメント同士を接合するにあたり、前記雄側継手のナットに平ワッシャーを設けておき、ネジ節鋼棒を若干斜め方向に傾斜させて埋設するとともに、前記雌側継手を成す埋設鋼板を前記ネジ節鋼棒の方向に沿って配置することにより、前記埋設鋼板の溝型形状切欠きと前記ネジ節鋼棒のナット部とを嵌合させる際にセグメントを引寄せて接合面を密着させるようにしたことを特徴とするセグメントの継手構造。
A joint structure of a segment that is assembled in the circumferential direction in a shield machine after excavation and connected in the tunnel axial direction to the assembled segment,
The segment includes an inter-piece joint that connects the segments in the circumferential direction, and an inter-ring joint that connects the segments in the tunnel axis direction,
The joint structure on one side of the piece-to-piece joint and the ring-to-ring joint is such that one side of an adjacent segment is a female-side joint made of a buried steel plate with a groove-shaped notch formed in the exposed portion. The other side is a male joint in which a nut is screwed into the protruding head of the threaded steel bar, and the segments are formed by fitting the grooved notch of the buried steel sheet and the nut part of the threaded steel bar. In joining the male side joint, a flat washer is provided on the nut of the male side joint, and the threaded steel bar is embedded in a slightly inclined direction, and the embedded steel sheet forming the female side joint is attached to the threaded steel bar. When the groove-shaped notch of the buried steel plate and the nut portion of the screw-carrying steel bar are fitted together by arranging them along the direction, the segments are brought close together so that the joint surfaces are brought into close contact with each other. And Joint structure of the instrument.
前記雌側継手は箱抜き内に設けられ、該箱抜き部以外でセグメント同士の接合面が密着している請求項1記載のセグメントの継手構造。   The joint structure of a segment according to claim 1, wherein the female side joint is provided inside a box, and a joint surface between the segments is in close contact other than the box opening. 前記ピース間継手及びリング間継手の内の他方側の継手構造は、挿入式のワンタッチ継手としてある請求項1、2いずれかに記載のセグメントの継手構造。   The joint structure of a segment according to any one of claims 1 and 2, wherein the joint structure on the other side of the joint between pieces and the joint between rings is an insertion type one-touch joint. 前記埋設鋼板は、コンクリート内部に埋設されるアンカー筋に対して溶接によって連結されている請求項1〜いずれかに記載のセグメントの継手構造。 The joint structure of a segment according to any one of claims 1 to 3 , wherein the embedded steel plate is connected to an anchor bar embedded in the concrete by welding. 前記埋設鋼板には開孔が設けられるとともに、コンクリート内部に埋設されるアンカー筋がU字状に形成され、
前記埋設鋼板は、前記開孔に前記アンカー筋を挿嵌させることによって連結されている請求項1〜いずれかに記載のセグメントの継手構造。
The embedded steel plate is provided with an opening, and anchor bars embedded in the concrete are formed in a U shape,
The joint structure of a segment according to any one of claims 1 to 4 , wherein the embedded steel plates are connected by inserting the anchor bars into the openings.
前記リング間継手面において、一方のセグメントに形成されたほぞと、他方のセグメントに形成されたほぞ穴とを嵌合させるようにしてある請求項1〜いずれかに記載のセグメントの継手構造。 The segment joint structure according to any one of claims 1 to 5, wherein a tenon formed in one segment and a tenon formed in the other segment are fitted to each other on the joint surface between the rings. 前記ほぞ穴を有する側のセグメントにおいて、前記ほぞ穴に近接したコンクリート内部にせん断補強筋の他に、該ほぞ穴を囲むように周方向に閉合した額縁補強筋を配設してある請求項記載のセグメントの継手構造。 Wherein the side segments having a mortise, in addition to the shear reinforcement in concrete interior proximate the mortise, claim are disposed a frame reinforcement which is closing in the circumferential direction so as to surround the mortise 6 The joint structure of the described segment. 請求項1〜いずれかに記載の雌側継手と雄側継手とを備えたことを特徴とするトンネル用セグメント。 Tunnel segments, characterized in that a female fitting and the male joint according to claim 1-7.
JP2010055664A 2009-03-12 2010-03-12 Segment joint structure and tunnel segment Active JP5465050B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010055664A JP5465050B2 (en) 2009-03-12 2010-03-12 Segment joint structure and tunnel segment

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2009058904 2009-03-12
JP2009058904 2009-03-12
JP2010055664A JP5465050B2 (en) 2009-03-12 2010-03-12 Segment joint structure and tunnel segment

Publications (2)

Publication Number Publication Date
JP2010236348A JP2010236348A (en) 2010-10-21
JP5465050B2 true JP5465050B2 (en) 2014-04-09

Family

ID=43090928

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010055664A Active JP5465050B2 (en) 2009-03-12 2010-03-12 Segment joint structure and tunnel segment

Country Status (1)

Country Link
JP (1) JP5465050B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7193685B2 (en) * 2017-02-27 2022-12-21 Next Innovation合同会社 Joint member and joint member for shield segment
CN109339818A (en) * 2018-10-22 2019-02-15 宁波大学 A kind of compound tunnel segment structure of Mechanical Method service channel portal fringing
JP7325080B2 (en) 2019-02-18 2023-08-14 Next Innovation合同会社 Joining means and joining method of members
CN113070647A (en) * 2021-04-13 2021-07-06 曹喜国 Method for reinforcing mortise and tenon structure in cold-bending right-angle refined steel square-through cavity

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06280496A (en) * 1993-03-29 1994-10-04 Penta Ocean Constr Co Ltd Structure for coupling ring to segment in shield method
JP3494836B2 (en) * 1996-12-19 2004-02-09 石川島建材工業株式会社 Segment joint structure
JP2001323788A (en) * 2000-05-15 2001-11-22 Kajima Corp Segment joint apparatus
JP3946501B2 (en) * 2001-11-22 2007-07-18 株式会社トーヨーアサノ Precast member joint and precast member provided with the joint
JP4990698B2 (en) * 2007-07-04 2012-08-01 株式会社大林組 Segment fitting bracket

Also Published As

Publication number Publication date
JP2010236348A (en) 2010-10-21

Similar Documents

Publication Publication Date Title
JP5959538B2 (en) Concrete structures
JP5465050B2 (en) Segment joint structure and tunnel segment
JP5728360B2 (en) Steel segment and synthetic segment
JP4866948B2 (en) Segment connection structure
JP2010133112A (en) Segment
KR101285704B1 (en) A reinforcing bar connector
JP2006052541A (en) Structure for connecting segments together
JP4474430B2 (en) Pile joint structure
JP2008169550A (en) Widening structure of shield tunnel, shield tunnel segment, and widening method for shield tunnel
JP2014201993A (en) Joint structure of segments
JP2000034897A (en) Composite-construction liner and manufacture thereof
JPH11315698A (en) Steel shell segment
KR101203653B1 (en) Pre-founded h shape steel column for topdown construction and construction method using the same
JP7039867B2 (en) Segment joint structure
JP4157211B2 (en) Steel segment and its manufacturing method
JP4866947B2 (en) Segment connection structure
JP4066279B2 (en) Steel segment connection structure reinforcement structure
JP5747522B2 (en) Segment consolidated structure
JP7076215B2 (en) Fixing structure of fittings
JP2003343196A (en) Coupling structure for steel segment with pre-filled concrete
JP2002081297A (en) Steel shell segment structure
JPH08121088A (en) Segment joint structure
JP5551016B2 (en) segment
JP5604265B2 (en) Precast member connection structure
JP4948781B2 (en) Segment connection structure

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20130227

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20131023

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20131023

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20131219

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140117

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140121

R150 Certificate of patent or registration of utility model

Ref document number: 5465050

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250