JP3481700B2 - Segment joint structure - Google Patents
Segment joint structureInfo
- Publication number
- JP3481700B2 JP3481700B2 JP25840394A JP25840394A JP3481700B2 JP 3481700 B2 JP3481700 B2 JP 3481700B2 JP 25840394 A JP25840394 A JP 25840394A JP 25840394 A JP25840394 A JP 25840394A JP 3481700 B2 JP3481700 B2 JP 3481700B2
- Authority
- JP
- Japan
- Prior art keywords
- segment
- plate piece
- wedge plate
- front side
- recess
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、多数連結されることに
より円筒状のトンネル壁体を構成する円弧版状セグメン
ト等のセグメントどうしを接合する継手構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for joining segments, such as arc-shaped plate-shaped segments, which form a cylindrical tunnel wall body by being connected in large numbers.
【０００２】[0002]
【従来の技術】近年のトンネル工法は、シールドマシン
によって地盤を掘削しながら、その後方で、円弧版状の
セグメントを順次接合して円筒状のトンネル壁体を構築
していく、いわゆるシールド工法が一般的になってきて
いる。そして、セグメントどうしの接合は、互いに接合
するセグメントの接合端面に、その接合端面に沿った状
態で埋設したプレート状の継手金具どうしを、この継手
金具周辺に設けた継手凹所を利用してボルト・ナット等
の締結部材で締結する構造が一般的である。2. Description of the Related Art A recent tunnel construction method is a so-called shield construction method in which a cylindrical tunnel wall is constructed by sequentially joining arc plate-shaped segments behind the ground while excavating the ground by a shield machine. It is becoming more common. Then, the segments are joined to each other by joining the plate-like joint fittings embedded in the joint end faces of the segments to be joined to each other along the joint end faces using the joint recesses provided around the joint fittings. -Generally, the structure is to fasten with fastening members such as nuts.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記のよう
にボルト・ナット等の締結部材で締結する構造では、ボ
ルト・ナットの締結操作が面倒であり、ロボットで自動
化するにも複雑な構成が求められる。また、継手凹所は
すなわち欠損部分であるから強度上その大きさに制限が
生じ、しかもトンネル内壁面を平滑に仕上げる要求があ
る場合にはこの凹所をモルタル等で埋める手間がかか
る。However, in the structure in which the fastening members such as bolts and nuts are used for fastening as described above, the fastening operation of the bolts and nuts is troublesome, and a complicated configuration is required for automation by the robot. To be Further, since the joint recess is a defective portion, its size is limited in terms of strength, and when it is required to finish the inner wall surface of the tunnel to be smooth, it takes time to fill the recess with mortar or the like.
【０００４】本発明は上記事情に鑑みてなされたもので
あって、セグメントどうしの接合作業が単純化されてロ
ボットによる自動化も容易となり、十分な強度が得られ
るのはもちろんのこと継手部を容易に平滑化できるセグ
メントの継手構造を提供することを目的としている。The present invention has been made in view of the above circumstances. The joining work between segments is simplified, automation by a robot is facilitated, and sufficient strength can be obtained as well as the joint portion is facilitated. It is an object of the present invention to provide a segment joint structure that can be smoothed.
【０００５】[0005]
【課題を解決するための手段】本発明は上記目的を達成
するためになされたものであって、版状のセグメント本
体を有する第１、第２のセグメントの両端部どうしを長
手方向に沿って接合する継手構造において、第１のセグ
メントの表面側および第２のセグメントの裏面側に、表
面および裏面に沿う第１の延出部、第２の延出部をそれ
ぞれ設け、第１の延出部の幅方向奥側に、先端部が手前
側に向き、かつ表面側に向かうにしたがい漸次幅狭とな
る断面台形状の奥側くさび板片を設け、第２の延出部の
幅方向手前側に、先端部が奥側に向き、かつ裏面側に向
かうにしたがい漸次幅狭となる断面台形状の手前側くさ
び板片を設け、奥側くさび板片に対向する第２のセグメ
ントのセグメント本体、手前側くさび板片に対向する第
１のセグメントのセグメント本体のそれぞれに、第１、
第２のセグメントを幅方向に相対的にスライドさせて互
いの接合端面を合わせていくことにより、奥側くさび板
片および手前側くさび板片がそれぞれくさび嵌合する奥
側凹所および手前側凹所を形成し、これら奥側凹所およ
び手前側凹所に、奥側くさび板片および手前側くさび板
片を嵌合させてなることを特徴としている。SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, in which both end portions of a first segment and a second segment having a plate-shaped segment main body are arranged along the longitudinal direction. In the joint structure for joining, a first extending portion and a second extending portion along the front surface and the back surface are provided on the front surface side of the first segment and the back surface side of the second segment, respectively, and the first extension On the inner side in the width direction of the portion, a rear side wedge plate piece having a trapezoidal cross section is provided, the width of which gradually narrows toward the front side and toward the front side, and the front side in the width direction of the second extending portion. On the side, a front wedge plate piece having a trapezoidal cross section is provided, the width of which gradually becomes narrower toward the back side and the front end portion, and the segment main body of the second segment facing the back wedge plate piece is provided. , Of the first segment facing the front wedge plate piece Segment the respective body, the first,
By relatively sliding the second segment in the width direction and aligning the joint end faces of each other, the rear side recess plate piece and the front side wedge plate piece are wedge-fitted, respectively. It is characterized in that a rear side wedge plate piece and a front side wedge plate piece are fitted to the back side concave part and the front side concave part.
【０００６】上記構成において、第１、第２の延出部、
奥側くさび板片、手前側板片は鋼やダクタイル鋳鉄等の
金属製であり、また、第１、第２のセグメントのセグメ
ント本体における少なくとも奥側凹所および手前側凹所
を形成する部分が、同様の金属製であること、さらに、
セグメント本体に、奥側凹所あるいは手前側凹所に近接
して補強部を設けたことを特徴としている。In the above structure, the first and second extension parts,
The back side wedge plate piece, the front side plate piece is made of metal such as steel or ductile cast iron, and the first and second segments of the segment body at least the portion forming the back side recess and the front side recess, Made of similar metal,
It is characterized in that the segment main body is provided with a reinforcing portion in the vicinity of the rear side recess or the front side recess.
【０００７】[0007]
【作用】本発明のセグメントの継手構造によれば、セグ
メントのスライド動作にともなって、奥側くさび板片に
奥側凹所が、手前側くさび板片に手前側凹所がそれぞれ
嵌合しセグメントどうしの接合がなされる。接合作業が
単純化されてロボットによる自動化にも容易に対応でき
る。欠損部である各凹所は各くさび板片が嵌合するので
強度的損失は生じず、特に仕上げを要することなく継手
面は平滑になる。また、厚さ方向に圧力を受けて継手部
に曲げ応力が発生した場合、各くさび板片と各凹所との
嵌合によりその曲げ応力に対する抵抗力が強く発生し、
しかも異なる方向の曲げ応力のいずれにも有効に対応す
る。According to the segment joint structure of the present invention, as the segment slides, the rear side wedge plate piece is fitted with the rear side concave portion and the front side wedge plate piece is fitted with the front side concave portion. The joining is done. The joining work is simplified and can be easily adapted to robot automation. Since each wedge plate piece fits into each recess, which is a defective portion, no loss in strength occurs, and the joint surface becomes smooth without any particular finishing. Further, when a bending stress is generated in the joint portion by receiving pressure in the thickness direction, a strong resistance to the bending stress is generated due to the fitting of each wedge plate piece and each recess,
Moreover, it effectively responds to any bending stress in different directions.
【０００８】また、第１、第２の延出部、奥側くさび板
片、手前側板片とともに第１、第２のセグメントのセグ
メント本体における少なくとも奥側凹所および手前側凹
所を形成する部分を鋼やダクタイル鋳鉄等の金属製とす
ることにより、強い応力を受けてもこれらがクラック等
の損傷を受けにくい。また、セグメント本体に、奥側凹
所あるいは手前側凹所に近接して補強部を設ければ接合
強度が向上する。Further, the first and second extending portions, the back side wedge plate piece, and the front side plate piece together with at least the back side recess and the front side recess in the segment body of the first and second segments. Are made of metal such as steel or ductile cast iron, so that they are less susceptible to damage such as cracks even when subjected to strong stress. Further, if the segment main body is provided with a reinforcing portion in the vicinity of the rear side recess or the front side recess, the joint strength is improved.
【０００９】[0009]
【実施例】以下、図面を参照して本発明の一実施例を説
明する。図１は、本実施例によってセグメント１どうし
を接合した継手部分を示し、図２ないし図４は接合前の
状態を示している。セグメント１は、多数連結させて円
筒状のトンネル壁体を構成する円弧版状のものであり、
セグメント本体２が、その外周面側および内周面側に一
体的に設けられた外側スキンプレート３および内側スキ
ンプレート４に挟まれた構成となっている。ここで、図
１における右側のセグメント１を第１のセグメント１
Ａ、左側のものを第２のセグメント１Ｂと称して説明を
進めていく。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a joint portion in which segments 1 are joined together according to this embodiment, and FIGS. 2 to 4 show a state before joining. The segment 1 is an arcuate plate-shaped one that is connected to form a cylindrical tunnel wall body,
The segment body 2 is sandwiched between an outer skin plate 3 and an inner skin plate 4 which are integrally provided on the outer peripheral surface side and the inner peripheral surface side thereof. Here, the segment 1 on the right side in FIG.
A and the one on the left side will be referred to as the second segment 1B, and the description will proceed.
【００１０】第１、第２のセグメント本体１Ａ、１Ｂ
は、鉄筋コンクリート製の円弧版体５を主体としてい
る。第１のセグメント１Ａの円弧版体５の内周面側およ
び第２のセグメント１Ｂの円弧版体５の外周面側におけ
る接合端部には、端部鋼板６がそれぞれ設けられてい
る。端部鋼板６は、内側スキンプレート４に溶接で固着
されるか、内面に設けられたジベルあるいはアンカー筋
等の結合材が円弧版体５に結合されるか、これら両方の
手段を合わせるか等の手段により設けられている。First and second segment bodies 1A, 1B
Is mainly made of an arc plate 5 made of reinforced concrete. End steel plates 6 are provided at the joint ends on the inner peripheral surface side of the circular arc plate 5 of the first segment 1A and on the outer peripheral surface side of the circular plate 5 of the second segment 1B, respectively. The end portion steel plate 6 is fixed to the inner skin plate 4 by welding, a connecting material such as a gibber or an anchor bar provided on the inner surface is connected to the arc plate 5, or both of these means are combined. It is provided by means of.
【００１１】第１のセグメント１Ａの外側スキンプレー
ト３は、セグメント本体２の接合端面２ａより周方向に
適宜長さ延びており、この延出部分が第１の延出部７Ａ
として設けられている。一方、第２のセグメント１Ｂの
内側スキンプレート４も、接合端面２ａより周方向に適
宜長さ延びており、この延出部分が第２の延出部７Ｂと
して設けられている。The outer skin plate 3 of the first segment 1A extends in an appropriate length in the circumferential direction from the joint end surface 2a of the segment body 2, and this extending portion is the first extending portion 7A.
Is provided as. On the other hand, the inner skin plate 4 of the second segment 1B also extends from the joining end surface 2a by a suitable length in the circumferential direction, and this extending portion is provided as the second extending portion 7B.
【００１２】第１の延出部７Ａの幅方向奥側（矢印Ａ方
向側）の内面には、鋼製の奥側くさび板片８Ａが溶接で
固着されている。奥側くさび板片８Ａは外側スキンプレ
ート３と同等の厚さを有する平面視テーパ状のもので、
幅狭の先端部が手前側に向いている。またこの奥側くさ
び板片８Ａは、外周面側に向かうにしたがい漸次幅狭と
なるよう板厚方向にもテーパが形成されている。この場
合、両側面にテーパが形成されているが、片面のみでも
よい。一方、第２の延出部７Ｂの幅方向手前側（矢印Ｂ
方向側）にも、同様の手前側くさび板片８Ｂが、先端部
が奥側に向く状態で固着されている。A rear wedge plate piece 8A made of steel is fixed by welding to the inner surface of the first extending portion 7A on the rear side in the width direction (direction of arrow A). The rear wedge plate piece 8A has a thickness similar to that of the outer skin plate 3 and is tapered in a plan view.
The narrow tip is facing you. The rear wedge plate piece 8A is also tapered in the plate thickness direction so that the width becomes gradually narrower toward the outer peripheral surface side. In this case, both sides are tapered, but only one side may be formed. On the other hand, the front side in the width direction of the second extending portion 7B (arrow B
A similar wedge plate piece 8B on the front side is also fixed to the direction side) with the tip end facing the back side.
【００１３】第１、第２のセグメント１Ａ、１Ｂは、幅
方向に相対的にスライドさせることによりセグメント本
体２の接合端面２ａが互いに合わせられて接合されるも
のであり、その状態においては、奥側くさび板片８Ａは
第２のセグメント１Ｂのセグメント本体２の端部鋼板６
に、また、手前側くさび板片８Ｂは第１のセグメント１
Ａのセグメント本体２の端部鋼板６にそれぞれ対向す
る。そして、各端部鋼板６には、上記スライド動作によ
り奥側くさび板片８Ａおよび手前側くさび板片８Ｂがぴ
ったりとくさび嵌合する奥側凹所９Ａおよび手前側凹所
９Ｂが、それぞれ形成されている。これら凹所９Ａ、９
Ｂは、くさび板片８Ａ、８Ｂの設けられた箇所およびそ
の形状に対応して、端部鋼板６の一部を切除することに
より形成されている。In the first and second segments 1A and 1B, the joint end faces 2a of the segment main body 2 are joined together by sliding relative to each other in the width direction. The side wedge plate piece 8A is the end steel plate 6 of the segment body 2 of the second segment 1B.
In addition, the front wedge plate piece 8B is the first segment 1
The end steel plates 6 of the A segment body 2 are opposed to each other. Then, in each of the end steel plates 6, a back side recess 9A and a front side recess 9B, into which the back side wedge plate piece 8A and the front side wedge plate piece 8B are fitted exactly by wedge, are formed by the above-described sliding operation. ing. These recesses 9A, 9
B is formed by cutting off a part of the end steel plate 6 corresponding to the locations and the shapes of the wedge plate pieces 8A and 8B.
【００１４】上記第１、第２のセグメント１Ａ、１Ｂを
接合するには、第１のセグメント１Ａの手前側に第２の
セグメント１Ｂを配し、第１のセグメント１Ａの第１の
延出部７Ａの内面に第２のセグメント１Ｂの端部鋼板６
の表面を合わせ、第２のセグメント１Ｂの第２の延出部
７Ｂの内面に第１のセグメント１Ａの端部鋼板６の表面
を合わせ、さらに接合端面２ａどうしを合わせた状態
で、第２のセグメント１Ｂを奥側にスライドさせてい
き、奥側凹所９Ａおよび手前側凹所９Ｂに、奥側くさび
板片８Ａおよび手前側くさび板片８Ｂを嵌合させる。In order to join the first and second segments 1A and 1B, the second segment 1B is arranged on the front side of the first segment 1A, and the first extension portion of the first segment 1A is arranged. 7A inner surface of the second segment 1B end steel plate 6
The surfaces of the end steel plates 6 of the first segment 1A are aligned with the inner surface of the second extending portion 7B of the second segment 1B, and the joining end surfaces 2a are aligned with each other. The segment 1B is slid to the back side, and the back side wedge plate piece 8A and the front side wedge plate piece 8B are fitted into the back side recess 9A and the front side recess 9B.
【００１５】上記本実施例によれば、従来のようにボル
ト・ナット等の締結部材で締結する構造ではなく、セグ
メントのスライド動作にともなって各くさび板片８Ａ、
８Ｂと各凹所９Ａ、９Ｂとを互いに嵌合させるだけセグ
メント１Ａ、１Ｂどうしの接合がなされるので、接合作
業が単純化される。たとえば、ロボットによる自動化も
セグメントの位置決めとスライド動作を備えた構成で可
能なので、きわめて容易となる。また、欠損部である各
凹所９Ａ、９Ｂは各くさび板片８Ａ、８Ｂが入り込むの
で、強度的損失は生じず十分な強度が得られるととも
に、内周面（外周面もだが）は特に仕上げを要すること
なく平滑になる。According to the present embodiment described above, the wedge plate pieces 8A, which are formed by the sliding operation of the segments, are not provided by the conventional structure in which the fastening members such as bolts and nuts are used for fastening.
Since the segments 1A and 1B are joined to each other only by fitting the 8B and the recesses 9A and 9B to each other, the joining operation is simplified. For example, automation by a robot can be made extremely easy because it can be configured by positioning the segments and sliding. Further, since the wedge plate pieces 8A and 8B enter into the recesses 9A and 9B, which are defective portions, sufficient strength is obtained without loss in strength, and the inner peripheral surface (even the outer peripheral surface) is particularly finished. It becomes smooth without requiring.
【００１６】また、厚さ方向に土圧等の圧力を受けて継
手部に曲げ応力が発生した場合、各くさび板片８Ａ、８
Ｂと各凹所９Ａ、９Ｂとの嵌合によりその曲げ応力に対
する抵抗力が強く発生し、高い接合強度を発揮するとと
もに、異なる方向の曲げ応力（図１に示す正曲げＰ、負
曲げＱ）のいずれにも有効に対応する。Further, when bending stress is generated in the joint portion by receiving pressure such as earth pressure in the thickness direction, each wedge plate piece 8A, 8
By fitting B with each recess 9A, 9B, a resistance against the bending stress is strongly generated, and high joint strength is exhibited, and bending stress in different directions (positive bending P, negative bending Q shown in FIG. 1). It corresponds effectively to any of.
【００１７】また、第１、第２の延出部７Ａ、７Ｂ、各
くさび板片８Ａ、８Ｂは鋼製であるとともに、各くさび
板片８Ａ、８Ｂと嵌合する各凹所９Ａ、９Ｂが形成され
ている端部鋼板６が同じく鋼製であるから、強い応力を
受けてもこれらがクラック等の損傷を受けにくく、この
点でも接合強度の向上が図られている。奥側凹所９Ａあ
るいは手前側凹所９Ｂの内面側の各端部鋼板６に鋼製の
補強板（補強部）１０を溶接して補強すれば、接合強度
のさらなる向上を図ることができる。図２においては、
手前側凹所９Ｂのみに補強板１０を固着している。The first and second extending portions 7A, 7B and the wedge plate pieces 8A, 8B are made of steel, and the recesses 9A, 9B fitted with the wedge plate pieces 8A, 8B are formed. Since the end steel plates 6 that are formed are also made of steel, they are less susceptible to damage such as cracks even when subjected to strong stress, and in this respect also, the joint strength is improved. If a steel reinforcing plate (reinforcing portion) 10 is welded to each of the end side steel plates 6 on the inner surface side of the back side recess 9A or the front side recess 9B to reinforce it, the joint strength can be further improved. In FIG.
The reinforcing plate 10 is fixed only to the front side recess 9B.
【００１８】なお、上記実施例では第１、第２の延出部
７Ａ、７Ｂ、各くさび板片８Ａ、８Ｂ、くさび板片８
Ａ、８Ｂと嵌合する各凹所９Ａ、９Ｂが形成されている
端部鋼板６等が鋼製であるが、これらがダクタイル鋳鉄
製であってもよく、また他の充分な強度を有する金属製
であってもよい。また、スキンプレートが外側、内側に
あるセグメントに本発明を適用したものであるが、本発
明はこれ以外の、片面のみにスキンプレートがあるセグ
メント、通常の鉄筋あるいは鉄骨セグメントにも適用で
きる。In the above embodiment, the first and second extending portions 7A and 7B, the wedge plate pieces 8A and 8B, and the wedge plate piece 8 are used.
The end steel plates 6 and the like in which the recesses 9A and 9B that fit with the A and 8B are formed are made of steel, but they may be made of ductile cast iron, and other metals having sufficient strength. It may be manufactured. Further, although the present invention is applied to the segment having the skin plates on the outer side and the inner side, the present invention can also be applied to other segments having a skin plate only on one surface, ordinary reinforcing bars or steel frame segments.
【００１９】[0019]
【発明の効果】以上説明したように、本発明のセグメン
トの継手構造によれば、セグメントのスライド動作にと
もなって、奥側くさび板片に奥側凹所が、手前側くさび
板片に手前側凹所がそれぞれ嵌合してセグメントどうし
の接合がなされる構造なので、接合作業が単純化されて
ロボットによる自動化にも容易に対応でき、欠損部であ
る各凹所は各くさび板片が嵌合するので強度的損失は生
じず強度が保たれ、さらに、特に仕上げを要することな
く平滑な継手面が得られるといった種々の効果を奏す
る。また、厚さ方向に圧力を受けて継手部に曲げ応力が
発生した場合、各くさび板片と各凹所との嵌合によりそ
の曲げ応力に対する抵抗力が強く発生し、しかも異なる
方向の曲げ応力のいずれにも有効に対応する。As described above, according to the segment joint structure of the present invention, as the segment slides, the rear side wedge plate piece has the rear side recess and the front side wedge plate piece has the front side recess. Since the recesses are fitted together and the segments are joined together, the joining work is simplified and can be easily adapted to automation by robots, and each wedge plate piece fits into each recess that is a defect. Therefore, there are various effects such that strength is not lost and strength is maintained, and a smooth joint surface can be obtained without requiring special finishing. Also, when bending stress is generated in the joint part due to pressure in the thickness direction, resistance to the bending stress is strongly generated by fitting each wedge plate piece and each recess, and bending stress in different directions is also generated. It corresponds effectively to any of.
【００２０】また、第１、第２の延出部、奥側くさび板
片、手前側板片とともに第１、第２のセグメントのセグ
メント本体における少なくとも奥側凹所および手前側凹
所を形成する部分を鋼やダクタイル鋳鉄等の金属製とす
ることにより、強い応力を受けてもこれらがクラック等
の損傷を受けにく接合強度が向上し、また、セグメント
本体に、奥側凹所あるいは手前側凹所に近接して補強部
を設けても接合強度が向上する。Further, together with the first and second extending portions, the back side wedge plate piece and the front side plate piece, a portion forming at least the back side recess and the front side recess in the segment main body of the first and second segments. Made of metal such as steel or ductile cast iron, they are not susceptible to damage such as cracks even under strong stress, and the joint strength is improved. Even if a reinforcing portion is provided close to the place, the joint strength is improved.
【図１】 本発明の一実施例の継手構造を示す正面図で
ある。FIG. 1 is a front view showing a joint structure according to an embodiment of the present invention.
【図２】 接合させるセグメントの分解正面図である。FIG. 2 is an exploded front view of a segment to be joined.
【図３】 接合させるセグメントの分解平面図である。FIG. 3 is an exploded plan view of segments to be joined.
【図４】 接合させるセグメントの分解斜視図である。FIG. 4 is an exploded perspective view of segments to be joined.
１Ａ…第１のセグメント、１Ｂ…第２のセグメント、２
…セグメント本体、２ａ…接合端面、３…外側スキンプ
レート、４…内側スキンプレート、５…円弧板体、６…
端部鋼板、７Ａ…第１の延出部、７Ｂ…第２の延出部、
８Ａ…奥側くさび板片、８Ｂ…手前側くさび板片、９Ａ
…奥側凹所、９Ｂ…手前側凹所。1A ... 1st segment, 1B ... 2nd segment, 2
... Segment body, 2a ... Joint end face, 3 ... Outer skin plate, 4 ... Inner skin plate, 5 ... Arc plate body, 6 ...
End steel plate, 7A ... first extension part, 7B ... second extension part,
8A: back wedge plate piece, 8B: front wedge plate piece, 9A
... rear side recess, 9B ... front side recess.
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) E21D 11/04 Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) E21D 11/04
Claims (3)
２のセグメントの両端部どうしを長手方向に沿って接合
する継手構造であって、 第１のセグメントの表面側および第２のセグメントの裏
面側に、表面および裏面に沿う第１の延出部、第２の延
出部をそれぞれ設け、 第１の延出部の幅方向奥側の内面に、先端部が手前側に
向き、かつ表面側に向かうにしたがい漸次幅狭となる断
面台形状の奥側くさび板片を設け、 第２の延出部の幅方向手前側の内面に、先端部が奥側に
向き、かつ裏面側に向かうにしたがい漸次幅狭となる断
面台形状の手前側くさび板片を設け、 奥側くさび板片に対向する第２のセグメントのセグメン
ト本体、手前側くさび板片に対向する第１のセグメント
のセグメント本体のそれぞれに、第１、第２のセグメン
トを幅方向に相対的にスライドさせて互いの接合端面を
合わせていくことにより、奥側くさび板片および手前側
くさび板片がそれぞれくさび嵌合する奥側凹所および手
前側凹所を形成し、 これら奥側凹所および手前側凹所に、奥側くさび板片お
よび手前側くさび板片を嵌合させてなることを特徴とす
るセグメントの継手構造。1. A joint structure for joining both end portions of a first segment and a second segment having a plate-shaped segment main body along the longitudinal direction, wherein the surface side of the first segment and the second segment A first extending portion and a second extending portion are provided on the back surface along the front surface and the back surface, respectively, and the tip portion is directed to the front side on the inner surface of the first extending portion in the width direction on the back side, and Providing a rear wedge plate piece with a trapezoidal cross-section that gradually narrows toward the front side, the front end faces the back side and the back side on the inner surface of the second extending portion on the front side in the width direction. Providing a front wedge plate piece with a trapezoidal cross section that gradually narrows as it goes, the segment body of the second segment facing the back wedge plate piece, the segment of the first segment facing the front wedge plate piece Width of the first and second segments on each of the body By sliding relative to each other and aligning the joint end faces of each other, the rear side wedge plate piece and the front side wedge plate piece respectively form a rear side recess and a front side recess in which a wedge fits, and these A joint structure for a segment, characterized in that a rear wedge plate piece and a front wedge plate piece are fitted in the rear side recess and the front side recess.
片、手前側板片は鋼やダクタイル鋳鉄等の金属製であ
り、また、前記第１、第２のセグメントのセグメント本
体における少なくとも前記奥側凹所および前記手前側凹
所を形成する部分が、同様の金属製であることを特徴と
する請求項１記載のセグメントの継手構造。2. The first and second extending portions, the back side wedge plate piece, and the front side plate piece are made of metal such as steel or ductile cast iron, and the segment body of the first and second segments. 2. The segment joint structure according to claim 1, wherein at least the portions forming the back side recess and the front side recess are made of the same metal.
あるいは前記手前側凹所に近接して補強部が設けられて
いることを特徴とする請求項１および２記載のうちのい
ずれか１のセグメントの継手構造。3. The segment main body is provided with a reinforcing portion in the vicinity of the back side recess or the front side recess, and any one of claims 1 and 2 is provided. Joint structure of the segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25840394A JP3481700B2 (en) | 1994-10-24 | 1994-10-24 | Segment joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25840394A JP3481700B2 (en) | 1994-10-24 | 1994-10-24 | Segment joint structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08121088A JPH08121088A (en) | 1996-05-14 |
| JP3481700B2 true JP3481700B2 (en) | 2003-12-22 |
Family
ID=17319753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25840394A Expired - Fee Related JP3481700B2 (en) | 1994-10-24 | 1994-10-24 | Segment joint structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3481700B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4648218B2 (en) * | 2006-02-27 | 2011-03-09 | 日本鋳鉄管株式会社 | Locking device for iron cover for manhole |
| JP4888724B2 (en) * | 2007-09-28 | 2012-02-29 | 清水建設株式会社 | Joint structure and segment including the same |
| JP5551016B2 (en) * | 2010-08-04 | 2014-07-16 | 清水建設株式会社 | segment |
| JP6305846B2 (en) * | 2014-06-26 | 2018-04-04 | 株式会社神戸製鋼所 | Attachment component, attachment of construction machine equipped with the same, and method of manufacturing attachment |
| JP7193685B2 (en) * | 2017-02-27 | 2022-12-21 | Ｎｅｘｔ Ｉｎｎｏｖａｔｉｏｎ合同会社 | Joint member and joint member for shield segment |
-
1994
- 1994-10-24 JP JP25840394A patent/JP3481700B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08121088A (en) | 1996-05-14 |
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