JP5420429B2

JP5420429B2 - Joint structure and joint method of reinforcing ring for liner plate and joint plate

Info

Publication number: JP5420429B2
Application number: JP2010001715A
Authority: JP
Inventors: 剛男原田; 昭宏森田; 規之川端
Original assignee: Nippon Steel Metal Products Co Ltd
Current assignee: Nippon Steel Metal Products Co Ltd
Priority date: 2010-01-07
Filing date: 2010-01-07
Publication date: 2014-02-19
Anticipated expiration: 2030-01-07
Also published as: JP2011140794A

Description

この発明は、推進工法用立坑、深礎工法用立坑、集水井戸等の立坑、或いは排水トンネル等の横坑の覆工に用いられるライナープレートの技術分野に属し、更に云えば、ライナープレートを接続して構築される立坑の壁体に対して、上下に取り付けるライナープレート用補強リングの継手構造および継手方法ならびに継手板に関する。 The present invention belongs to the technical field of liner plates used for the lining of horizontal shafts such as shafts for propulsion methods, shafts for deep foundation methods, drainage wells, etc., or drainage tunnels. The present invention relates to a joint structure, a joint method, and a joint plate of a reinforcing ring for a liner plate that is attached up and down with respect to a wall of a shaft constructed to be connected.

前記ライナープレートは、その強度を高めるために、ライナープレートの周長方向のフランジに沿って補強リングを設けて実施する場合がある。
前記補強リングは、一般に、弧状に形成したＨ形鋼からなる複数の補強リング片を継手板を介しボルト接合して形成される。前記複数の補強リング片は、そのフランジを地山側と坑内側に配置して周長方向に補強リング片同士の端部を向かい合わせ、坑内側の作業員の手作業により互いに接合して、ライナープレートの横断面形状に合致する円形、小判形、或いは矩形等の閉断面形状の補強リングに完成される。
前記補強リングを構成する補強リング片の接合作業について、坑内側フランジの接合作業は、作業員の目視で確認しつつ確実に支障なく行うことができるが、地山側フランジの接合作業は、作業員の目視で確認しづらく手探り状態で行なう作業が多々あり、大変煩わしく、施工性の点において課題が残されていた。
ちなみに、作業員の目視で確認しづらい部位の最たるものが、地山側フランジの上部であり、この部分に継手板を当てがい、ボルトを通してナットを締結するボルト接合作業が大変煩わしく、作業員が最も難渋しているところである。 In order to increase the strength of the liner plate, a reinforcing ring may be provided along a circumferential flange of the liner plate.
The reinforcing ring is generally formed by bolting a plurality of reinforcing ring pieces made of an H-shaped steel formed in an arc shape via a joint plate. The plurality of reinforcing ring pieces are arranged on the natural ground side and the inside of the well, the ends of the reinforcing ring pieces face each other in the circumferential direction, and are joined to each other manually by a worker inside the well. A reinforcing ring having a closed cross-sectional shape such as a circular shape, an oval shape, or a rectangular shape that matches the cross-sectional shape of the plate is completed.
As for the joining work of the reinforcing ring pieces constituting the reinforcing ring, the joining work of the pit inner flange can be surely performed without trouble while visually confirming by the worker, but the joining work of the natural ground side flange is performed by the worker. There are many operations that are difficult to confirm by visual inspection and are carried out in a groping state, which is very cumbersome and remains a problem in terms of workability.
By the way, the most difficult part to check visually by the worker is the top of the flange on the natural ground side, and the bolt joining work that puts the joint plate on this part and fastens the nut through the bolt is very troublesome. It is difficult.

前記課題を踏まえ、従来、前記補強リング片の地山側フランジの接合作業を速やかに行うべく、地山側フランジに当てがう継手板の形態に工夫を施した発明が種々提案されている（例えば、特許文献１、２を参照）。 Based on the above problems, various inventions have been proposed in which the shape of the joint plate applied to the ground-side flange is devised so as to quickly perform the joining operation of the ground-side flange of the reinforcing ring piece (for example, (See Patent Documents 1 and 2).

特許文献１には、同文献１の第１図、第２図に示したように、下端部にボルト孔（１８）を設け、上端部をＨ形鋼（２０、２０）のフランジ上端に掛け止め可能な鉤状に形成した継手板（１０）を用い、向かい合わせたＨ形鋼（２０、２０）の地山側フランジの上端に均等に跨るように前記鉤状の掛け止め部（１２）を掛け止めて継手板（１０）を位置決めし、同継手板（１０）の下端部のボルト孔（１８）を利用してボルト接合する発明が開示されている。 In Patent Document 1, as shown in FIGS. 1 and 2 of Patent Document 1, a bolt hole (18) is provided at the lower end, and the upper end is hung on the upper end of the flange of the H-section steel (20, 20). Using the coupling plate (10) formed in a hook-shaped hook shape, the hook-shaped hooking portion (12) is provided so as to evenly straddle the upper end of the ground flange of the H-shaped steel (20, 20) facing each other. An invention is disclosed in which the joint plate (10) is positioned by latching and bolted using the bolt hole (18) at the lower end of the joint plate (10).

特許文献２には、同文献２の図１、図２に示したように、左半部（７２）と右半部（７１）を段違いに（図示例では右半部を一段下げて）形成した継手板（７）を用い、左側の補強リング（２）の地山側フランジ（４）に左半部（７２）を固定した継手板（７）の右半部（７１）と、右側の補強リング（２）の端部における地山側フランジ（４）の下端部に設けた張出部（４３）とをボルト接合する発明が開示されている。 In Patent Document 2, as shown in FIGS. 1 and 2 of Patent Document 2, the left half part (72) and the right half part (71) are formed in a step difference (in the illustrated example, the right half part is lowered by one step). The right half (71) of the joint plate (7), in which the left half (72) is fixed to the natural ground flange (4) of the left reinforcing ring (2), and the right side reinforcement An invention is disclosed in which a projecting portion (43) provided at the lower end portion of the natural mountain side flange (4) at the end portion of the ring (2) is bolted.

特開昭６２−２８８２９４号公報Japanese Patent Laid-Open No. 62-288294 特開２００３−３７８１号公報JP 2003-3781 A

上記特許文献１、２に開示された発明は、作業員が最も難渋する地山側フランジの上部について、手探りでのボルト接合作業を無くし、向かい合わせた補強リング片の端部同士を接合するので前記課題を解決しているように見える。 In the inventions disclosed in Patent Documents 1 and 2, the upper part of the ground mountain side flange that is most difficult for the worker eliminates the bolt joint work by groping, and joins the ends of the reinforcing ring pieces facing each other. Looks like they are solving the problem.

しかしながら、特許文献１の発明は、同文献１の第３頁右上欄第５行目〜第１１行目に記載されている通り、前記掛け止め部をＨ形鋼の地山側フランジ部に掛け止めた場合に、フランジの幅が広く、間隙が生じてがたつくことがあり、ボルトとナットを確実に締結しづらいという致命的な問題がある。確かに、前記隙間にクサビを打ち込むことでこの問題は解消できるが、この作業は、地山側フランジの上部のボルト接合作業を行う場合と同様に無理な姿勢で行わなければならず、作業員の熟練技術を必要とすることに加え、なによりクサビを打ち込む作業が新たに加わる煩わしさがある。 However, in the invention of Patent Document 1, the latching part is latched to the ground-side flange part of the H-section steel as described in the fifth column to the eleventh line of the upper right column of the third page of the same document 1. In such a case, there is a fatal problem that it is difficult to fasten the bolt and the nut securely because the width of the flange is wide and a gap is generated. Certainly, this problem can be solved by driving wedges into the gap, but this work must be done in an unreasonable posture as in the case of the bolt joint work on the top of the natural mountain side flange. In addition to the need for skilled skills, there is an added burden of adding a wedge work.

特許文献２の発明は、市販の補強リング片に張出部を設けた特殊形状で実施するので、加工費及び材料費が嵩むという問題がある。補強リング片に張出部を溶接で取り付ける場合は、補強リング片と張出部との接触面が完全に溶け込むような溶接が必須となり、手間と時間がかかり不経済である。また、特殊形状であるが故に嵩張るので、市販の補強リングと比して、輸送や保管に要するコストも嵩むという問題もある。さらに、継手板のせいが、補強リング片のせいより高いので、その分だけボルト接合のための地山をえぐるような掘削（タヌキ掘り）が増えるので、地山の安定性を損なう虞もある。
特許文献２の発明には、同文献２の図５と図６に示したように、張出部を有する鋼板（１８）を用いることにより、溶接を無用とした実施例も開示されてはいる。しかし、地山の安定性を損なう問題は依然として解消されない。また、前記鋼板（１８）を用いることに伴い、継手板（７）と補強リング片（２）との間に隙間調整板（１７）も用いる必要があり、材料費がさらに嵩む問題がある。 Since the invention of Patent Document 2 is implemented in a special shape in which a commercially available reinforcing ring piece is provided with a protruding portion, there is a problem that processing costs and material costs increase. When attaching the overhanging portion to the reinforcing ring piece by welding, it is essential to weld so that the contact surface between the reinforcing ring piece and the overhanging portion is completely melted, which is laborious and time consuming and uneconomical. Moreover, since it is bulky because of its special shape, there is also a problem that the cost required for transportation and storage increases as compared with a commercially available reinforcing ring. In addition, because the joint plate is higher than the reinforcing ring piece, the number of excavations (raccoon digging) that go around the ground for bolt joints increases, which may impair the stability of the ground. .
In the invention of Patent Document 2, as shown in FIGS. 5 and 6 of the same Document 2, an embodiment in which welding is unnecessary by using a steel plate (18) having an overhang portion is also disclosed. . However, problems that impair the stability of natural grounds are still not solved. Moreover, with the use of the steel plate (18), it is necessary to use the gap adjusting plate (17) between the joint plate (7) and the reinforcing ring piece (2), which causes a problem that the material cost is further increased.

本発明の目的は、補強リング片の地山側フランジに設ける継手板を、地山側へ手を入れてボルト接合する作業に合理的な形状・構造で実施することにより、作業員が最も難渋する地山側フランジの上部について、手探りでのボルト接合作業を無くし、向かい合わせた補強リング片の端部同士を迅速、且つ確実に接合することができる、施工性、経済性に非常に優れたライナープレート用補強リングの継手構造および継手方法ならびに継手板を提供することにある。 The object of the present invention is to provide a joint plate provided on the ground-side flange of the reinforcing ring piece with a reasonable shape and structure for the work of bolting by putting the hand into the ground-side, thereby making it the place where workers are most difficult. For the upper part of the mountain side flange, it is possible to quickly and reliably join the ends of the reinforcing ring pieces facing each other without using bolting work, and for the liner plate with excellent workability and economy. It is an object to provide a joint structure and joint method of a reinforcing ring, and a joint plate.

上記背景技術の課題を解決するための手段として、請求項１に記載した発明に係るライナープレート用補強リングの継手構造は、ライナープレートを接続して構築される立坑の壁体に対して、上下に取り付けるライナープレート用補強リングの継手構造であって、
前記ライナープレート用補強リングは、Ｈ形鋼からなる複数の補強リング片を、そのフランジを地山側と坑内側に配置して周長方向に補強リング片同士の端部を向かい合わせ、継手板を介して接合することにより構成され、
補強リング片の地山側フランジに設ける継手板は、向かい合わせる補強リング片の端部における地山側フランジの上部に上部側継手片がそれぞれ設けられ、下部には補強リング片の端部双方に跨って１つの下部側継手片が設けられ、前記下部側継手片が備える凹部に上部側継手片が嵌り合うことで、応力を伝達可能に当接してなる構成とされ、
向かい合わせた補強リング片の端部における地山側フランジの上部にそれぞれ固定された前記上部側継手片に、下部側継手片が応力を伝達可能に当接され、
向かい合わせた補強リング片の端部における地山側フランジには、双方の少なくとも下部側にボルト孔が設けられ、前記下部側継手片には、前記ボルト孔と一致する位置にボルト孔が設けられ、一致したボルト孔に挿入したボルトへナットが締結され、当該下部側継手片は、向かい合わせた補強リング片の端部における双方の地山側フランジに跨って固定されていることを特徴とする。 As a means for solving the above-described background art, the joint structure of the reinforcement ring for liner plate according to the invention described in claim 1 is provided in a vertical direction with respect to the wall of the shaft constructed by connecting the liner plate. It is a joint structure of a reinforcement ring for a liner plate to be attached to
The reinforcing ring for liner plate has a plurality of reinforcing ring pieces made of H-shaped steel, the flanges are arranged on the natural ground side and the inside of the pit, the ends of the reinforcing ring pieces face each other in the circumferential direction, and the joint plate is Composed by joining through,
The joint plate provided on the ground ring side flange of the reinforcing ring piece is provided with an upper side joint piece at the upper part of the ground ring side flange at the end part of the reinforcing ring piece facing each other and straddling both ends of the reinforcing ring piece at the lower part. One lower side joint piece is provided, and the upper side joint piece is fitted into a recess provided in the lower side joint piece, so that the stress can be transmitted so as to be contacted,
The lower joint piece is brought into contact with the upper joint piece fixed to the upper part of the natural ground flange at the end of the reinforcing ring piece facing each other so as to transmit stress,
The natural mountain side flange at the end of the reinforcing ring piece facing each other is provided with a bolt hole on at least the lower side of both sides, and the lower joint piece is provided with a bolt hole at a position corresponding to the bolt hole, A nut is fastened to the bolt inserted in the matched bolt hole, and the lower joint piece is fixed across both ground-side flanges at the ends of the reinforcing ring pieces facing each other.

請求項２に記載した発明は、請求項１に記載したライナープレート用補強リングの継手構造において、前記応力は、剪断応力であることを特徴とする。 The invention described in claim 2 is the joint structure of the reinforcing ring for liner plate described in claim 1, wherein the stress is a shear stress.

請求項３に記載した発明は、請求項１又は２に記載したライナープレート用補強リングの継手構造において、前記上部側継手片は、下端部に凹部及び凸部が設けられた形状に形成され、前記下部側継手片は、上端部に前記凹部及び凸部へ嵌まり合う凸部及び凹部が設けられ、両者が合体した状態で略長方形状の継手板に形成される構成とされていることを特徴とする。 The invention described in claim 3 is the joint structure of the reinforcement ring for liner plate according to claim 1 or 2, wherein the upper side joint piece is formed in a shape in which a concave portion and a convex portion are provided at a lower end portion, The lower joint piece is provided with a convex portion and a concave portion that fit into the concave portion and the convex portion at the upper end portion, and is configured to be formed into a substantially rectangular joint plate in a state in which both are combined. Features.

請求項４に記載した発明は、請求項１又は２に記載したライナープレート用補強リングの継手構造において、前記上部側継手片は、一対の略長方形状に形成され、前記下部側継手片は、その上端部が、一端部同士を向かい合わせた当該上部側継手片の他端部及び下端部に内接する凹部に形成され、両者が合体した状態で略長方形状の継手板に形成される構成とされていることを特徴とする。 According to a fourth aspect of the present invention, in the joint structure for a liner plate reinforcing ring according to the first or second aspect, the upper side joint piece is formed in a pair of substantially rectangular shapes, and the lower side joint piece is The upper end portion is formed in a concave portion inscribed in the other end portion and the lower end portion of the upper side joint piece with the one end portions facing each other, and is formed into a substantially rectangular joint plate in a state where both are combined. It is characterized by being.

請求項５に記載した発明は、請求項１〜４のいずれか一に記載したライナープレート用補強リングの継手構造において、前記上部側継手片は、補強リング片の端部における地山側フランジの上部にボルト止め、ねじ止め、又は溶接により固定されていることを特徴とする。 According to a fifth aspect of the present invention, in the joint structure for a liner plate reinforcing ring according to any one of the first to fourth aspects, the upper side joint piece is an upper part of the ground-side flange at the end of the reinforcing ring piece. It is fixed by bolting, screwing, or welding.

請求項６に記載した発明に係る継手板は、ライナープレートを接続して構築される立坑の壁体に対して、上下に取り付けるライナープレート用補強リングの構成要素である、Ｈ形鋼からなる補強リング片において、地山側と坑内側に配置されたフランジのうちの地山側フランジに設ける継手板であり、向かい合わせる補強リング片の端部における地山側フランジ外面の上部にそれぞれ設けられた上部側継手片と、地山側フランジ外面の下部に、補強リング片の端部双方に跨って設けられる１つの下部側継手片とを具備し、前記下部側継手片が備える凹部に上部側継手片が嵌り合うことで構成されていることを特徴とする。 The joint plate according to the invention described in claim 6 is a reinforcement made of H-section steel, which is a constituent element of a reinforcement ring for a liner plate that is attached vertically to a wall of a shaft constructed by connecting liner plates. In the ring piece, it is a joint plate provided on the natural ground side flange of the flanges arranged on the natural ground side and the inside of the pit , and the upper side joint provided respectively on the outer surface of the natural ground side flange at the end of the reinforcing ring piece facing each other And a lower joint piece provided across both ends of the reinforcing ring piece at the lower part of the outer surface of the natural flange, and the upper joint piece fits into a recess provided in the lower joint piece. characterized in that it is constituted by.

請求項７に記載した発明に係るライナープレート用補強リングの継手方法は、ライナープレートを接続して構築される立坑の壁体に対して、上下に取り付けるライナープレート用補強リングの継手方法であって、
前記ライナープレート用補強リングは、Ｈ形鋼からなる複数の補強リング片を、そのフランジを地山側と坑内側に配置して周長方向に補強リング片同士の端部を向かい合わせ、継手板を介して接合することにより構成し、
補強リング片の地山側フランジに設ける継手板は、向かい合わせる補強リング片の端部における地山側フランジの上部に上部側継手片をそれぞれ設け、下部には補強リング片の端部双方に跨って１つの下部側継手片を設け、前記下部側継手片が備える凹部に上部側継手片が嵌り合うことで、応力を伝達可能に当接してなる構成とし、
前記上部側継手片を地山側フランジの上部に固定した補強リング片同士の端部を向かい合わせた後、隣接する２つの上部側継手片へ下部側継手片を応力を伝達可能に当接し、
向かい合わせた補強リング片の端部における地山側フランジは、双方の少なくとも下部側にボルト孔を有し、前記下部側継手片は、前記ボルト孔と一致する位置にボルト孔を有し、一致したボルト孔にボルトを挿入してナットで締結し、当該下部側継手片を、向かい合わせた補強リング片の端部における双方の地山側フランジに跨って固定することを特徴とする。 The joint method of the reinforcement ring for liner plates according to the invention described in claim 7 is a joint method of the reinforcement ring for liner plates attached up and down with respect to the wall of the shaft constructed by connecting the liner plates. ,
The reinforcing ring for liner plate has a plurality of reinforcing ring pieces made of H-shaped steel, the flanges are arranged on the natural ground side and the inside of the pit, the ends of the reinforcing ring pieces face each other in the circumferential direction, and the joint plate is Configured by joining via
The joint plate provided on the ground-side flange of the reinforcing ring piece is provided with an upper-side joint piece at the upper part of the ground-side flange at the end part of the reinforcing ring piece facing each other, and 1 at the lower part straddling both ends of the reinforcing ring piece. Two lower side joint pieces are provided, and the upper side joint piece fits into a recess provided in the lower side joint piece, so that the stress can be transmitted and contacted,
After facing the ends of the reinforcing ring pieces that fixed the upper side joint piece to the top of the natural ground side flange, the lower side joint piece is brought into contact with two adjacent upper side joint pieces so that stress can be transmitted,
The ground-side flanges at the ends of the reinforcing ring pieces facing each other have bolt holes on at least the lower side of the both sides, and the lower joint pieces have bolt holes at positions corresponding to the bolt holes, and coincide with each other. A bolt is inserted into the bolt hole and fastened with a nut, and the lower joint piece is fixed across both ground-side flanges at the ends of the reinforcing ring pieces facing each other.

本発明に係るライナープレート用補強リングの継手構造および継手方法ならびに継手板によれば、以下の効果を奏する。
１）地山側フランジに設ける継手板を、地山側へ手を入れてボルト接合する作業に合理的な３分割形状で実施することにより、作業員が最も難渋する地山側フランジの上部について、継手板を構成する上部側継手片を予め補強リング片の地山側フランジに固定して実施することができるので、手探りでのボルト接合作業を省略することができる。よって、向かい合わせた補強リング片の端部同士を迅速、且つ確実に接合できるので施工性に優れている。
２）地山側フランジの上部のボルト接合作業は予め行われていることにより、ライナープレートへ上部側継手片を取り付ける際のボルト接合作業を行う必要がないので、ボルト接合のための地山をえぐるような掘削（タヌキ掘り）の量を減少させることができる。よって、従来技術と比して、地山の安定性を損なう虞がない。
３）使用する鋼材量（材料費）については、２枚の長方形状の継手板を用いて行う従来技術と同程度の量で済み、非常に経済的である。また、従来技術で用いる補強リング片を用いて実施できるので、従来技術の補強リング片を併用できて非常に経済的である。 The liner plate reinforcing ring joint structure, joint method, and joint plate according to the present invention have the following effects.
1) The joint plate provided on the natural ground side flange is formed in a reasonable three-part shape for the work of bolting by putting the hand in the natural ground side. Can be carried out by fixing the upper-side joint piece that constitutes to the ground-side flange of the reinforcing ring piece in advance, so that the bolt joining work by groping can be omitted. Therefore, the end portions of the reinforcing ring pieces facing each other can be joined quickly and reliably, so that the workability is excellent.
2) Since the bolt joining work on the upper part of the natural ground side flange has been performed in advance, it is not necessary to perform the bolt joining work when attaching the upper joint piece to the liner plate. The amount of such excavation (raccoon digging) can be reduced. Therefore, there is no possibility of damaging the stability of natural ground as compared with the prior art.
3) The amount of steel used (material cost) can be as much as that of the conventional technique using two rectangular joint plates, which is very economical. Moreover, since it can implement using the reinforcement ring piece used by a prior art, it can use together the reinforcement ring piece of a prior art, and it is very economical.

本発明に係るライナープレート用補強リングの継手構造を示した分解斜視図である。It is the disassembled perspective view which showed the joint structure of the reinforcement ring for liner plates which concerns on this invention. Ａ、Ｂは、本発明に係る継手板を構成する上部側継手片と下部側継手片の形状を示した正面図である。A and B are the front views which showed the shape of the upper side coupling piece and the lower side coupling piece which comprise the coupling board which concerns on this invention. Ａは、向かい合わせた地山側フランジに固定した上部側継手片に下部側継手片を当接する段階を示した側面図であり、Ｂは、同正面図である。A is the side view which showed the step which contact | abuts the lower side joint piece to the upper side joint piece fixed to the natural ground side flange which faced each other, and B is the same front view. Ａは、向かい合わせた地山側フランジに固定した上部側継手片に下部側継手片を当接してボルト接合した段階を示した側面図であり、Ｂは、同正面図である。A is a side view showing a stage in which a lower joint piece is brought into contact with and bolted to an upper joint piece fixed to a natural ground flange facing each other, and B is a front view thereof. 本発明に係るライナープレート用補強リングの継手構造を示した側面図である。It is the side view which showed the joint structure of the reinforcement ring for liner plates which concerns on this invention. 本発明に係るライナープレート用補強リングの継手構造をライナープレートを省略して示した斜視図である。It is the perspective view which abbreviate | omitted the liner plate and showed the joint structure of the reinforcement ring for liner plates which concerns on this invention. 本発明に係るライナープレート用補強リングの継手構造をライナープレートを省略して示した平面図である。It is the top view which abbreviate | omitted the liner plate and showed the joint structure of the reinforcement ring for liner plates which concerns on this invention. Ａは、本発明に係る継手板を構成する上部側継手片と下部側継手片の寸法の一例を示した正面図であり、Ｂは、同側面図である。A is the front view which showed an example of the dimension of the upper side coupling piece and the lower side coupling piece which comprise the coupling board which concerns on this invention, B is the same side view. Ａ〜Ｄはそれぞれ、本発明に係る継手板のバリエーションを示した正面図である。A to D are front views showing variations of the joint plate according to the present invention.

図１〜図９は、本発明に係るライナープレート用補強リングの継手構造の実施例を示している。
このライナープレート用補強リングの継手構造は、ライナープレート１０を接続して構築される立坑の壁体に対して、上下に取り付けるライナープレート用補強リングの継手構造であり、前記ライナープレート用補強リングは、Ｈ形鋼からなる複数の補強リング片１を、そのフランジを地山８側と坑内９側に配置して周長方向に補強リング片１、１同士の端部を向かい合わせ（図１参照）、継手板２、２０を介して接合することにより構成される。
補強リング片１の地山側フランジ１１に設ける継手板２は、向かい合わせる補強リング片１、１の端部における地山側フランジ１１の上部に上部側継手片３、３がそれぞれ設けられ、下部には補強リング片１の端部双方に跨って１つの下部側継手片４が設けられ、前記下部側継手片４が備える凹部に上部側継手片３、３が嵌り合うことで、応力を伝達可能に当接してなる構成とされ、向かい合わせた補強リング片１、１の端部における地山側フランジ１１、１１の上部にそれぞれ固定された前記上部側継手片３、３に、下部側継手片４が応力を伝達可能に当接される。
向かい合わせた補強リング片１、１の端部における地山側フランジ１１、１１には、双方の少なくとも下部側にボルト孔１１ａが設けられ、前記下部側継手片４には、前記ボルト孔１１ａと一致する位置にボルト孔４ａが設けられ、一致したボルト孔１１ａ、４ａに挿入したボルト５へナット６が締結され、当該下部側継手片４は、向かい合わせた補強リング片１、１の端部における双方の地山側フランジ１１、１１に跨って固定されている（図６等参照）。 FIGS. 1-9 has shown the Example of the joint structure of the reinforcement ring for liner plates which concerns on this invention.
The liner plate reinforcing ring joint structure is a joint structure of liner plate reinforcing rings that are attached to the vertical wall of the shaft wall constructed by connecting the liner plate 10. The liner plate reinforcing ring includes: A plurality of reinforcing ring pieces 1 made of H-shaped steel are arranged with their flanges on the ground 8 side and the underground 9 side, and the ends of the reinforcing ring pieces 1 and 1 face each other in the circumferential direction (see FIG. 1). ) And the joint plates 2 and 20.
The joint plate 2 provided on the ground-side flange 11 of the reinforcing ring piece 1 is provided with upper-side joint pieces 3 and 3 at the upper part of the ground-side flange 11 at the ends of the reinforcing ring pieces 1 and 1 facing each other, and at the lower part. One lower joint piece 4 is provided across both ends of the reinforcing ring piece 1, and the upper joint pieces 3 and 3 are fitted into the recesses of the lower joint piece 4 so that stress can be transmitted. A lower joint piece 4 is formed on the upper joint pieces 3 and 3 fixed to the upper portions of the ground flanges 11 and 11 at the ends of the reinforcing ring pieces 1 and 1 facing each other. It is contacted so that stress can be transmitted.
Bolts 11a and 11 at the ends of the reinforcing ring pieces 1 and 1 facing each other are provided with bolt holes 11a on at least the lower side of both, and the lower joint piece 4 coincides with the bolt hole 11a. The bolt hole 4a is provided at a position where the nut 6 is fastened to the bolt 5 inserted into the matched bolt hole 11a, 4a, and the lower joint piece 4 is at the end of the reinforcing ring pieces 1, 1 facing each other. It is fixed straddling both natural ground side flanges 11 and 11 (refer FIG. 6 etc.).

前記補強リング片１は、フランジを地山８側と坑内９側に配置するＨ形鋼を弧状に形成し、ライナープレート１０の下端部の周方向フランジ１０ａに沿う配置に複数個（通常、４個以上）向き合わせて接合され、補強リングに完成される。
ちなみに、図示例に係る補強リング片１のＨ形鋼の断面寸法は、１２５（高さ）×１２５（幅）×６．５（ウエブ厚）×９（フランジ厚）（単位：ｍｍ）で実施している。
前記補強リングは、図示の便宜上一部省略するが、１／４円弧状の補強リング片１を４個用い、隣接する補強リング片同士１、１の端部を互いに向かい合わせてリング状に形成して実施する。なお、補強リングを構成する補強リング片１の使用個数、形状、及び断面寸法は図示例に限定されず、補強リング、ひいては構築するライナープレート１０の規模、及び形状（円形、小判形、矩形）に応じて適宜設計変更される。
ちなみに、図示例では、補強リング片同士１、１の端部が当接するように互いに突き合わせて接合しているがこれに限定されず、誤差調整等のため、僅かに隙間をあけた配置で向かい合わせて接合することもできる。 The reinforcing ring pieces 1 are formed by arcuating H-shaped steels having flanges arranged on the ground 8 side and the mine 9 side, and are arranged in a plurality along the circumferential flange 10a at the lower end of the liner plate 10 (usually 4 More than one) are face-to-face joined to complete the reinforcing ring.
By the way, the cross-sectional dimension of the H-shaped steel of the reinforcing ring piece 1 according to the illustrated example is 125 (height) × 125 (width) × 6.5 (web thickness) × 9 (flange thickness) (unit: mm) doing.
Although part of the reinforcing ring is omitted for the sake of illustration, the four reinforcing ring pieces 1 having a circular arc shape are used, and the ends of the adjacent reinforcing ring pieces 1 and 1 face each other and are formed in a ring shape. And implement. The number, shape, and cross-sectional dimensions of the reinforcing ring pieces 1 constituting the reinforcing ring are not limited to the illustrated examples, and the scale and shape of the reinforcing ring and consequently the liner plate 10 to be constructed (circular, oval, rectangular). The design will be changed accordingly.
Incidentally, in the illustrated example, the reinforcing ring pieces 1 and 1 are abutted and joined to each other so that the end portions of the reinforcing ring pieces 1 and 1 are in contact with each other, but the present invention is not limited to this. They can also be joined together.

前記継手板２、２０はそれぞれ、図６等に示したように、向かい合わせた（突き合わせた）補強リング片同士１、１の端部の地山側フランジ１１、１１と坑内側フランジ１２、１２に跨って配設される。
前記継手板２、２０のうち、補強リング片１の坑内側フランジ１２に設ける継手板２０は、従来と同様の継手板が用いられる。すなわち、前記継手板２０は金属製であり、弧状に形成した補強リング片１のフランジの形状と一致する曲率（一例として曲率半径1750ｍｍ）で成形し、図１に示したように、向かい合わせた補強リング片同士１、１の端部における坑内側フランジ１２、１２に設けたボルト孔１２ａに、継手板２０に設けたボルト孔２０ａが一致する構成で実施されている。ちなみに、本実施例に係る継手板２０の寸法は、１２５（高さ）×１２（厚さ）×幅３３０（幅）（単位：ｍｍ）で実施されている。 As shown in FIG. 6 and the like, the joint plates 2 and 20 are respectively connected to the ground-side flanges 11 and 11 and the downside flanges 12 and 12 at the ends of the reinforcing ring pieces 1 and 1 facing each other. It is arranged across.
Of the joint plates 2 and 20, a joint plate similar to the conventional one is used as the joint plate 20 provided on the downhole flange 12 of the reinforcing ring piece 1. That is, the joint plate 20 is made of metal and is formed with a curvature (for example, a curvature radius of 1750 mm) that matches the shape of the flange of the reinforcing ring piece 1 formed in an arc, and face each other as shown in FIG. The reinforcement ring pieces 1 and 1 are implemented in a configuration in which the bolt holes 20a provided in the joint plate 20 coincide with the bolt holes 12a provided in the inner flanges 12 and 12 at the end portions of the reinforcing ring pieces 1 and 1, respectively. Incidentally, the dimensions of the joint plate 20 according to the present embodiment are 125 (height) × 12 (thickness) × width 330 (width) (unit: mm).

一方、地山側フランジ１１に配置する継手板２は、作業員の目視で確認しづらい地山８側のボルト接合作業を効率よく確実に行うべく、図２に示したように、２つの上部側継手片３、３と下部側継手片４とを応力（剪断応力）を伝達可能に組み合わせてなる構造で実施している。２つの上部側継手片３、３をそれぞれ、補強リング１、１の地山側フランジ１１、１１に予め固定した状態で地山８側のボルト接合作業を行うことが可能となり、作業員が最も難渋する地山側フランジ１１の上部について、手探りでのボルト接合作業を無くすためである。
前記２つの上部側継手片３、３及び下部側継手片４は、金属製であり、それらを組み合わせた継手板２は、弧状に形成した補強リング片１のフランジの形状と一致する曲率で成形している。下部側継手片４は、前記地山側フランジ１１、１１の下部側に設けた複数（図示例では４個）のボルト孔１１ａと一致する位置にボルト孔４ａが設けられている。
ちなみに、本実施例に係る継手板２の寸法は、１２５（高さ）×１６（厚さ）×幅３３０（幅）（単位：ｍｍ）で実施されており、前記継手板２０と比して、厚みを厚くして剛性を高めている。 On the other hand, the joint plate 2 disposed on the natural ground side flange 11 has two upper sides as shown in FIG. 2 in order to efficiently and reliably perform the bolt joining operation on the natural ground 8 side, which is difficult to be visually confirmed by an operator. The joint pieces 3 and 3 and the lower side joint piece 4 are implemented by a structure in which stress (shear stress) can be transmitted. It becomes possible to perform bolting work on the ground 8 side in a state where the two upper joint pieces 3 and 3 are fixed in advance to the ground flanges 11 and 11 of the reinforcing rings 1 and 1 respectively. This is to eliminate the bolt-joining work by groping about the upper part of the natural mountain side flange 11.
The two upper joint pieces 3 and 3 and the lower joint piece 4 are made of metal, and the joint plate 2 formed by combining them is formed with a curvature that matches the shape of the flange of the reinforcing ring piece 1 formed in an arc shape. doing. The lower joint piece 4 is provided with bolt holes 4a at positions corresponding to a plurality (four in the illustrated example) of bolt holes 11a provided on the lower side of the natural ground flanges 11 and 11.
Incidentally, the dimensions of the joint plate 2 according to the present embodiment are 125 (height) × 16 (thickness) × width 330 (width) (unit: mm), compared with the joint plate 20. The thickness is increased to increase the rigidity.

なお、本実施例に係る上部側継手片３は、地山側フランジ１１の上部に設けたボルト孔１１ａと一致する位置にボルト孔３ａが設けられ、一致したボルト孔１１ａ、３ａに挿入したボルト５へナット６を締結する手段で地山側フランジ１１に固定している。当該固定作業は坑内側、或いは坑内に搬入する前の地上など、補強リング片１をライナープレート１０に取り付ける前の段階で予め行うことができるので作業場所に特に制約は課されない。よって、ボルト接合に限定されず、ねじ止め又は溶接などの固定手段でも実施できる。
ただし、従来技術で用いる補強リング片１を接合する場合、単に補強リング片１の上部のボルト接合を省いて下部のみのボルト接合としてしまうと、ボルト５の本数が半減するため、補強リング片１、１同士の確実な連結に必要なボルト５の剪断応力の合計が不足する。そこで、補強リング片１の上部のボルト接合も行い、上部側継手板３、３と下部側継手板４を剪断応力を伝達可能な形状とする。このようにすることで、補強リング片１の上部及び下部の両方のボルト５の剪断応力により、補強リング片１、１同士の確実な連結が実施される。よって、従来技術で用いる補強リング片１を接合する場合、上部側継手板３は、ボルト接合により補強リング片１の地山側フランジ１１に固定することが好ましい。
後述する図９Ａ〜Ｄにバリエーションを例示した継手板１５、２５、３５、４５についても同様の技術的思想とする。 The upper side joint piece 3 according to the present embodiment, bolt hole 3a is provided at a position matching the bolt holes 11 a provided in the upper portion of the earth mountain side flanges 11, matching the bolt holes 11 a, and inserted into 3a The nut 5 is fastened to the natural ground flange 11 by means of fastening the nut 6 to the bolt 5. Since the fixing work can be performed in advance at the stage before attaching the reinforcing ring piece 1 to the liner plate 10 such as on the inside of the mine or on the ground before being carried into the mine, no particular restriction is imposed on the work place. Therefore, the present invention is not limited to bolt joining, and can be implemented by fixing means such as screwing or welding.
However, when the reinforcing ring piece 1 used in the prior art is joined, if the bolt joining at the upper part of the reinforcing ring piece 1 is simply omitted and only the lower part is joined, the number of bolts 5 is halved. The sum total of the shear stress of the bolt 5 required for the reliable connection between the two is insufficient. Therefore, the upper joint plate 3, 3 and the lower joint plate 4 are shaped so as to be able to transmit the shearing stress by also bolting the upper portion of the reinforcing ring piece 1. By doing in this way, the reliable connection of the reinforcement ring pieces 1 and 1 is implemented by the shear stress of the bolt 5 of both the upper part and the lower part of the reinforcement ring piece 1. Therefore, when joining the reinforcement ring piece 1 used by a prior art, it is preferable to fix the upper side coupling board 3 to the natural ground side flange 11 of the reinforcement ring piece 1 by bolt joining.
The joint plates 15, 25, 35, and 45 whose variations are illustrated in FIGS.

ちなみに、本実施例に係るボルト５は、図３等に示したように、その頭部をライナープレート１０側へ向けて前記ボルト孔１１ａ、３ａへ挿入して実施している。これは、ボルト５の先端部をライナープレート１０側へ向けて実施すると、使用するボルト５の長さやライナープレート１０、補強リング片１の形態によっては、ボルト５の先端部がライナープレート１０に接触して良好なボルト５及びナット６の締結が図れないことを確実に防止するためである。よって、構造設計上、ボルト５の先端部がライナープレート１０に接触する虞がない場合は、ボルト５の先端部をライナープレート１０側へ向けて挿入して実施することも勿論できる。 Incidentally, as shown in FIG. 3 and the like, the bolt 5 according to this embodiment is inserted into the bolt holes 11 a and 3 a with the head portion facing the liner plate 10 side. This is because when the tip of the bolt 5 is directed toward the liner plate 10, the tip of the bolt 5 contacts the liner plate 10 depending on the length of the bolt 5 to be used and the form of the liner plate 10 and the reinforcing ring piece 1. Therefore, it is possible to reliably prevent the bolts 5 and the nuts 6 from being fastened together. Therefore, when there is no possibility that the tip of the bolt 5 comes into contact with the liner plate 10 due to the structural design, it is of course possible to insert the tip of the bolt 5 toward the liner plate 10.

本実施例に係る継手板２を構成する上部側継手片３、３と下部側継手片４は、一例として、図８に示した寸法（大きさ）及び形状で実施されているがこれに限定されず、図９Ａ〜Ｄに例示したバリエーションでも同様に実施できる。
要するに、継手板２は、形成した補強リングの構造上の特性、及び前記継手板２の構成上の特性により、接合した補強リング片１、１の端部同士における地山側フランジ１１の上部が地山８側へ開こうとする力が作用したときに、前記上部に固定した上部側継手片３、３から下部側継手片４へ伝達される剪断応力に対し当該上部側継手片３、３及び下部側継手片４が互いに十分に抵抗できる剛性を有した構造設計とすることを条件に、様々なバリエーションで実施することができる。 The upper side joint pieces 3 and 3 and the lower side joint piece 4 constituting the joint plate 2 according to the present embodiment are implemented with the dimensions (sizes) and shapes shown in FIG. 8 as an example, but are not limited thereto. However, the variations illustrated in FIGS.
In short, the joint plate 2 has a structure in which the reinforcing ring is formed, and the structural properties of the joint plate 2, so that the upper part of the ground-side flange 11 at the ends of the joined reinforcing ring pieces 1 and 1 is grounded. When a force to open the mountain 8 is applied, the upper joint pieces 3, 3 and the shearing stress transmitted from the upper joint pieces 3, 3 fixed to the upper part to the lower joint piece 4 are applied. It can be implemented in various variations on the condition that the lower joint piece 4 has a structural design with sufficient rigidity to resist each other.

ちなみに、図１〜図８に係る実施例に示した継手板２は、前記２つの上部側継手片３、３は、下端部に凹部が設けられた左右対称な一対の形状に形成され、前記下部側継手片４は、上端部に前記凹部へ嵌まり合う凸部が設けられ、両者が合体した状態で略長方形状の継手板２に形成される構成で実施している。具体的に、一端部同士を向かい合わせる前記一対の上部側継手片３、３にはそれぞれ、その下端部の中央部に三角形状の凹部が１つ設けられ、他端部に段状の凹部（切欠部）が１つ設けられて実施されている。前記上部側継手片３、３に跨るように当接させる前記下部側継手片４には、その上端部における前記三角形状の凹部に嵌まり合う位置に三角形状の凸部が２つ設けられ、両端部に前記段状の凹部（切欠部）に嵌まり合う凸部が２つ設けられて実施されている。 Incidentally, in the joint plate 2 shown in the embodiment according to FIGS. 1 to 8, the two upper joint pieces 3 and 3 are formed in a pair of left and right symmetrical shapes in which a recess is provided at the lower end, The lower joint piece 4 is implemented by a configuration in which a convex portion that fits into the concave portion is provided at the upper end portion, and the joint plate 2 is formed in a substantially rectangular shape in a state where both are combined. Specifically, each of the pair of upper side joint pieces 3 and 3 facing each other at one end is provided with one triangular recess at the center of its lower end, and a stepped recess ( One notch) is provided. The lower joint piece 4 to be brought into contact with the upper joint pieces 3 and 3 is provided with two triangular convex portions at positions where the upper joint portions fit into the triangular concave portions, Two protrusions that fit into the stepped recesses (notches) are provided at both ends.

かくして、ライナープレート用補強リングの継手構造は、前記上部側継手片３、３がそれぞれ固定された補強リング片１、１が、端部同士を互いに向かい合わせてライナープレート１０の接続端に位置決めされ、当該補強リング片１、１の地山側フランジ１１、１１における上部側継手板３、３の下端に、当該地山側フランジ１１、１１に跨るように下部側継手板４が剪断応力を伝達可能に当接されてボルト５とナット６で接合されると共に、坑内側フランジ１２、１２に跨るように前記継手板２０が当接されてボルト５とナット６で接合されてなる（図５〜図７参照）。 Thus, in the joint structure of the liner plate reinforcing ring, the reinforcing ring pieces 1 and 1 to which the upper joint pieces 3 and 3 are respectively fixed are positioned at the connection end of the liner plate 10 with their ends facing each other. The lower joint plate 4 can transmit shear stress to the lower ends of the upper joint plates 3 and 3 of the ground ring flanges 11 and 11 of the reinforcing ring pieces 1 and 1 so as to straddle the ground mountain flanges 11 and 11. The joint plate 20 is abutted and joined by the bolt 5 and the nut 6 so as to straddle the inner flanges 12 and 12 while being abutted and joined by the bolt 5 and the nut 6 (FIGS. 5 to 7). reference).

なお、各ボルト５は、図示例ではその頭部をライナープレート１０側へ向けて実施しているが、上記段落[0025]で説明したように、構造設計上、ボルト５の先端部がライナープレート１０に接触する虞がない場合は、ボルト５の先端部をライナープレート１０側へ向けて挿入して実施してもよい。
また、前記継手板２（上部側継手片３、３、及び下部側継手片４）、２０の形状、及び継手板２、２０に設けたボルト孔３ａ、４ａ、２０ａの個数、配置は、もちろん図示例に限定されず、使用する補強リング片１の形状、及び補強リング片１に設けたボルト孔１１ａ、１２ａの個数、配置に応じて適宜設計変更される。当該ボルト孔３ａ、４ａ、２０ａの形状も丸孔に限定されず、ボルト５の挿入作業を容易ならしめるべく、長孔で実施することも勿論できる。図９Ａ〜Ｄにバリエーションを例示した継手板１５、２５、３５、４５についても同様の技術的思想とする。 In the illustrated example, each bolt 5 has its head directed toward the liner plate 10 side. However, as described in the paragraph [0025] above, the tip of the bolt 5 is the liner plate for structural design. If there is no risk of contact with the bolt 10, the tip of the bolt 5 may be inserted toward the liner plate 10 side.
Also, the shape of the joint plate 2 (upper side joint pieces 3, 3 and lower side joint piece 4), 20 and the number and arrangement of bolt holes 3a, 4a, 20a provided in the joint plates 2, 20 are of course. The design is not limited to the illustrated example, and the design is appropriately changed according to the shape of the reinforcing ring piece 1 to be used, the number of bolt holes 11a and 12a provided in the reinforcing ring piece 1 and the arrangement thereof. The shape of the bolt holes 3a, 4a, and 20a is not limited to a round hole, and it is of course possible to use a long hole so that the bolt 5 can be inserted easily. The joint plates 15, 25, 35, and 45 whose variations are illustrated in FIGS.

次に、ライナープレート用補強リングの継手方法について説明する。
この継手方法は、先ず、補強リング片１をライナープレート１０の接続端に位置決めする前に予め、補強リング片１の接合端部に前記上部側継手片３を固定する。前記上部側継手片３は、補強リング片１の接合端部における地山側フランジ１１の上部に、互いの角隅部を一致させて前記固定手段（図示例ではボルト接合）で固定する。この作業は、地上、或いはライナープレート１０の坑内で行う。 Next, the joint method of the reinforcement ring for liner plates is demonstrated.
In this joint method, first, the upper side joint piece 3 is fixed to the joint end portion of the reinforcing ring piece 1 in advance before positioning the reinforcing ring piece 1 at the connection end of the liner plate 10. The upper side joint piece 3 is fixed to the upper part of the natural mountain side flange 11 at the joining end of the reinforcing ring piece 1 with the fixing means (bolt joint in the illustrated example) with the corners of each other being matched. This operation is performed on the ground or in the mine of the liner plate 10.

次に、前記上部側継手片３を固定した補強リング片１を既設のライナープレート１０に、同ライナープレート１０の下端部の周方向フランジ１０ａに沿うように、補強リング片１、１同士を向かい合わせて（突き合わせて）取り付ける。具体的に、各補強リング片１は、図１、図３Ａに示したように、上部側継手片３を設けた地山側フランジ１１を地山８側へ配置し、坑内側フランジ１２を坑内９側へ配置して、各補強リング片１のウエブに設けたボルト孔１ａをライナープレート１０の周方向フランジ１０ａに設けたボルト孔１０ｂへ一致させ、一致したボルト孔１ａ、１０ｂにボルト１６を下方から挿入してナット１７で締結して補強リング片１、１同士を互いに向かい合わせる。そうすると、各補強リング片１、１に固定した上部側継手片３、３の端部同士は、図３Ｂに示したように、隣接して互いに向かい合う。 Next, the reinforcing ring piece 1 with the upper joint piece 3 fixed is placed on the existing liner plate 10 so that the reinforcing ring pieces 1 and 1 face each other along the circumferential flange 10a at the lower end of the liner plate 10. Attach (match). Specifically, as shown in FIG. 1 and FIG. 3A, each reinforcing ring piece 1 has a ground-side flange 11 provided with an upper-side joint piece 3 disposed on the ground 8 side, and a well-side flange 12 is located in a well 9. The bolt holes 1a provided in the web of each reinforcing ring piece 1 are aligned with the bolt holes 10b provided in the circumferential flange 10a of the liner plate 10, and the bolts 16 are moved downward in the matched bolt holes 1a and 10b. And tightened with a nut 17 so that the reinforcing ring pieces 1 and 1 face each other. Then, the ends of the upper joint pieces 3 and 3 fixed to the reinforcing ring pieces 1 and 1 are adjacent to each other as shown in FIG. 3B.

既設のライナープレート１０に補強リング片１、１を向かい合わせて設置した後、図３Ａ、Ｂに示したように、隣接して互いに向かい合う上部側継手片３、３の下端に、下部側継手片４を地山８側の下方から剪断応力を伝達可能に当接（合体）させて、補強リング片１の地山側フランジ１１の下部側に設けたボルト孔１１ａと、当該下部側継手片４に設けたボルト孔４ａとを同心となる配置に位置決めし、図４に示したように、前記ボルト孔１１ａ、４ａに、４本のボルト５をそれぞれ坑内９側から地山８側へ挿入してナット６をねじ込んで締結して継手板２を構成する。この部位のボルト接合作業は、地山側フランジ１１の下段部のみ行えば足りるので、作業者は、スムーズで良好な接合作業を確実に行うことができる。 After the reinforcing ring pieces 1 and 1 are installed on the existing liner plate 10 so as to face each other, as shown in FIGS. 3A and 3B, the lower side joint pieces are disposed at the lower ends of the upper side joint pieces 3 and 3 which are adjacent to each other and face each other. 4 is brought into contact with (combined with) the lower side of the natural ground 8 so that shear stress can be transmitted, and the bolt hole 11 a provided on the lower side of the natural ground side flange 11 of the reinforcing ring piece 1 and the lower side joint piece 4 The bolt holes 4a provided are positioned concentrically, and as shown in FIG. 4, four bolts 5 are respectively inserted into the bolt holes 11a and 4a from the downhole 9 side to the ground 8 side. The nut 6 is screwed and fastened to constitute the joint plate 2. Since it is sufficient to perform the bolt joining work for this portion only at the lower stage portion of the natural mountain side flange 11, the operator can surely perform a smooth and good joining work.

一方、向かい合う坑内側フランジ１２、１２に均等に跨るように前記継手板２０を設け、坑内側フランジ１２に設けたボルト孔１２ａと、当該継手板２０に設けたボルト孔２０ａとを同心となる配置に位置決めし、図５〜図７に示したように、前記ボルト孔１２ａ、２０ａに、８本のボルト５をそれぞれ地山８側から坑内９側へ挿入してナット６をねじ込んで締結する。この部位のボルト接合作業は、作業員の目視で確認しつつ行うことができるので、作業者は、スムーズで良好な接合作業を確実に行うことができる。なお、この継手板２０の接合作業は、継手板２（下部側継手片４）の接合作業に先行して行ってもよい。
ちなみに、図中の符号７は、ワッシャーを示している。 On the other hand, the joint plate 20 is provided so as to evenly straddle the opposing well inner flanges 12, 12, and the bolt holes 12 a provided in the well inner flange 12 and the bolt holes 20 a provided in the joint plate 20 are arranged concentrically. 5 to 7, 8 bolts 5 are inserted into the bolt holes 1 2 a and 20 a from the ground 8 side to the underground 9 side, and the nut 6 is screwed in, respectively. Conclude. Since the bolt joining work of this part can be performed while visually confirming by an operator, the worker can surely perform a smooth and good joining work. The joint work of the joint plate 20 may be performed prior to the joint work of the joint plate 2 (lower side joint piece 4).
Incidentally, reference numeral 7 in the drawing indicates a washer.

かくして、向かい合わせた補強リング片１、１の地山側フランジ１１、１１及び坑内側フランジ１２、１２にそれぞれ継手板２、２０を跨るようにボルト接合して、向かい合わせた補強リング片１、１同士を接合する作業を、前記ライナープレート１０の周方向フランジに沿って必要な数だけ繰り返し行うことにより、補強リングを完成する。補強リングを完成した後は、補強リング片１のボルト孔１ａに取り付けておいた複数のボルト１６の一部を一旦取り外し、下側にライナープレート（図示省略）を配置した後、前記ボルト１６を再び取り付ける。 Thus, the reinforcing ring pieces 1, 1 facing each other are bolted so as to straddle the joint plates 2, 20 to the ground-side flanges 11, 11 and the inner flanges 12, 12 of the reinforcing ring pieces 1, 1 facing each other. A reinforcing ring is completed by repeating the operation | work which joins together as many as needed along the circumferential direction flange of the said liner plate 10. FIG. After completing the reinforcing ring, a part of the plurality of bolts 16 attached to the bolt holes 1a of the reinforcing ring piece 1 is once removed, and a liner plate (not shown) is disposed on the lower side, and then the bolts 16 are attached. Reinstall.

以上説明したライナープレート用補強リングの継手構造および継手方法ならびに継手板２によれば、作業員が最も難渋する地山側フランジ１１の上部について、継手板２を構成する上部側継手片３を予め補強リング片１の地山側フランジ１１に固定して実施することができるので、手探りでのボルト接合作業を省略することができる。よって、向かい合わせた補強リング片１、１の端部同士を迅速、且つ確実に接合することができるほか、ボルト接合のための地山８をえぐるような掘削（タヌキ掘り）の量を減少させることができる。 According to the joint structure and the joint method of the liner plate reinforcing ring and the joint plate 2 described above, the upper joint piece 3 constituting the joint plate 2 is reinforced in advance with respect to the upper part of the natural mountain side flange 11 where the worker is most difficult. Since it can fix and implement to the natural ground side flange 11 of the ring piece 1, the bolt joint operation by groping can be abbreviate | omitted. Therefore, the ends of the reinforcing ring pieces 1 and 1 facing each other can be joined quickly and reliably, and the amount of excavation (raccoon digging) that goes around the natural ground 8 for bolt joining is reduced. be able to.

以上、実施例を図面に基づいて説明したが、本発明は、図示例の限りではなく、その技術的思想を逸脱しない範囲において、当業者が通常に行う設計変更、応用のバリエーションの範囲を含むことを念のために言及する。 Although the embodiments have been described with reference to the drawings, the present invention is not limited to the illustrated examples and includes a range of design changes and application variations that are usually made by those skilled in the art without departing from the technical idea thereof. I will mention that just in case.

例えば、前記継手板２を構成する上部側継手片３、３と下部側継手片４の形状は図１〜図８に限定されず、図９Ａ〜Ｄに例示する様々なバリエーションでも同様に実施することができる。
図９Ａは、２つの上部側継手片１３、１３は、下端部に三角形状の凹部（又は凸部）が連続する左右対称な一対の形状に形成され、下部側継手片１４は、上端部に前記凹部（又は凸部）へ嵌まり合う三角形状の凸部（又は凹部）が連続的に設けられ、両者が合体した状態で略長方形状に形成される継手板１５の実施例を示している。
図９Ｂは、２つの上部側継手片２３、２３は、下端部に四角形状の凸部（又は凹部）が２つ設けられた左右対称な一対の形状に形成され、下部側継手片２４は、上端部に前記凸部（又は凹部）へ嵌まり合う位置に四角形状の凹部（又は凸部）が４つ設けられ、両者が合体した状態で略長方形状に形成される継手板２５の実施例を示している。
図９Ｃは、２つの上部側継手片３３、３３は、下端部の中央部に三角形状の凸部が１つ設けられた左右対称な一対の形状に形成され、下部側継手片３４は、上端部に前記凸部へ嵌まり合う位置に三角形状の凹部が２つ設けられ、両者が合体した状態で略長方形状に形成される継手板３５の実施例を示している。
図９Ｄは、２つの上部側継手片４３、４３は、一対の長方形状に形成され、下部側継手片４４は、その上端部が、一端部同士を向かい合わせた当該２つの上部側継手片４３、４３の他端部及び下端部に内接する凹部に形成され、両者が合体した状態で略長方形状に形成される継手板４５の実施例を示している。 For example, the shapes of the upper side joint pieces 3 and 3 and the lower side joint piece 4 constituting the joint plate 2 are not limited to those shown in FIGS. 1 to 8, and various variations illustrated in FIGS. be able to.
In FIG. 9A, the two upper joint pieces 13, 13 are formed in a pair of left and right symmetrical shapes in which a triangular concave portion (or convex portion) is continuous at the lower end portion, and the lower joint piece 14 is formed at the upper end portion. An example of the joint plate 15 is shown in which a triangular convex portion (or concave portion) that fits into the concave portion (or convex portion) is continuously provided and formed into a substantially rectangular shape in a state where both are combined. .
In FIG. 9B, the two upper side joint pieces 23, 23 are formed in a pair of left and right symmetrical shapes in which two square-shaped convex parts (or concave parts) are provided at the lower end part, Example of joint plate 25 in which four concave portions (or convex portions) are provided at positions where the upper end portion fits into the convex portions (or concave portions), and are formed in a substantially rectangular shape in a state where both are combined. Is shown.
In FIG. 9C, the two upper side joint pieces 33, 33 are formed in a pair of left and right symmetrical shapes in which one triangular convex part is provided at the center of the lower end part, and the lower side joint piece 34 In the embodiment, two triangular concave portions are provided at positions where the convex portions are fitted to the convex portions, and the joint plate 35 is formed in a substantially rectangular shape in a state where both are combined.
In FIG. 9D, the two upper side joint pieces 43 and 43 are formed in a pair of rectangular shapes, and the lower side joint piece 44 has two upper side joint pieces 43 whose one end faces each other. , 43 is formed in a recess inscribed in the other end portion and the lower end portion, and an example of the joint plate 45 formed in a substantially rectangular shape in a state where both are combined is shown.

これら図９Ａ〜Ｄに係る継手板１５、２５、３５、４５は、形成した補強リングの構造上の特性、及び前記継手板１５（２５、３５、４５）の構成上の特性により、接合した補強リング片１、１の端部同士における地山側フランジ１１の上部が地山８側へ開こうとする力が作用したときに、前記上部に固定した上部側継手片１３（２３、３３、４３）から下部側継手片１４（２４、３４、４４）へ伝達される剪断応力に対し、当該上部側継手片１３（２３、３３、４３）及び下部側継手片１４（２４、３４、４４）が互いに十分に抵抗できる剛性を有した構造設計とすることにより、前記継手板２を用いて補強リング片１、１の端部同士を接合する場合と同様に実施することができる。
すなわち、作業員が最も難渋する地山側フランジの上部について、継手板１５（２５、３５、４５）を構成する上部側継手片１３（２３、３３、４３）を、予め補強リング片１の地山側フランジ１１に固定して実施することができるので、上記段落[0035]で説明した効果と同様の効果を実現することができる。 The joint plates 15, 25, 35, and 45 according to FIGS. 9A to 9D are joined together due to the structural characteristics of the formed reinforcing ring and the structural characteristics of the joint plate 15 (25, 35, 45). The upper joint piece 13 (23, 33, 43) fixed to the upper part when a force is exerted to open the upper part of the natural mountain side flange 11 at the ends of the ring pieces 1, 1 toward the natural mountain 8 side. The upper side joint piece 13 (23, 33, 43) and the lower side joint piece 14 (24, 34, 44) are in contact with each other against the shear stress transmitted to the lower side joint piece 14 (24, 34, 44). By adopting a structural design having sufficient rigidity to resist, the joint plate 2 can be used similarly to the case where the ends of the reinforcing ring pieces 1 and 1 are joined to each other.
That is, the upper side joint piece 13 (23, 33, 43) constituting the joint plate 15 (25, 35, 45) is previously connected to the ground side of the reinforcing ring piece 1 for the upper part of the natural mountain side flange where the worker is most difficult. Since it can fix and implement to the flange 11, the effect similar to the effect demonstrated in the said paragraph [0035] is realizable.

１補強リング片
２継手板
３上部側継手片
３ａボルト孔
４下部側継手片
４ａボルト孔
５ボルト
６ナット
７ワッシャー
８地山
９坑内
１０ライナープレート
１０ａ周方向フランジ
１０ｂボルト孔
１１地山側フランジ
１１ａボルト孔
１２坑内側フランジ
１２ａボルト孔
１３上部側継手片
１４下部側継手片
１５継手板
１６ボルト
１７ナット
２０継手板
２０ａボルト孔
２３上部側継手片
２４下部側継手片
２５継手板
３３上部側継手片
３４下部側継手片
３５継手板
４３上部側継手片
４４下部側継手片
４５継手板 DESCRIPTION OF SYMBOLS 1 Reinforcement ring piece 2 Joint plate 3 Upper side joint piece 3a Bolt hole 4 Lower side joint piece 4a Bolt hole 5 Bolt 6 Nut 7 Washer 8 Ground mountain 9 Downhole 10 Liner plate 10a Circumferential flange 10b Bolt hole 11 Ground side flange 11a Bolt Hole
1 2 Downhole flange 12a Bolt hole 13 Upper side joint piece 14 Lower side joint piece 15 Joint plate 16 Bolt 17 Nut 20 Joint plate 20a Bolt hole 23 Upper side joint piece 24 Lower side joint piece 25 Joint plate 33 Upper side joint piece 34 Lower side joint piece 35 Joint plate 43 Upper side joint piece 44 Lower side joint piece 45 Joint plate

Claims

It is a joint structure of a reinforcement ring for a liner plate attached up and down with respect to a wall of a shaft constructed by connecting liner plates,
The reinforcing ring for liner plate has a plurality of reinforcing ring pieces made of H-shaped steel, the flanges are arranged on the natural ground side and the inside of the pit, the ends of the reinforcing ring pieces face each other in the circumferential direction, and the joint plate is Composed by joining through,
The joint plate provided on the ground ring side flange of the reinforcing ring piece is provided with an upper side joint piece at the upper part of the ground ring side flange at the end part of the reinforcing ring piece facing each other and straddling both ends of the reinforcing ring piece at the lower part. One lower side joint piece is provided, and the upper side joint piece is fitted into a recess provided in the lower side joint piece, so that the stress can be transmitted so as to be contacted,
The lower joint piece is brought into contact with the upper joint piece fixed to the upper part of the natural ground flange at the end of the reinforcing ring piece facing each other so as to transmit stress,
The natural mountain side flange at the end of the reinforcing ring piece facing each other is provided with a bolt hole on at least the lower side of both sides, and the lower joint piece is provided with a bolt hole at a position corresponding to the bolt hole, A liner is characterized in that a nut is fastened to a bolt inserted into a matched bolt hole, and the lower joint piece is fixed across both ground-side flanges at the ends of the reinforcing ring pieces facing each other. Joint structure of reinforcing ring for plate.

The joint structure of a reinforcement ring for a liner plate according to claim 1, wherein the stress is a shear stress.

The upper joint piece is formed in a shape in which a concave portion and a convex portion are provided at the lower end portion, and the lower joint piece is provided with a convex portion and a concave portion that fit into the concave portion and the convex portion at the upper end portion, The joint structure for a reinforcement ring for a liner plate according to claim 1 or 2, wherein the joint plate is formed into a substantially rectangular joint plate in a state in which both are combined.

The upper side joint piece is formed in a pair of substantially rectangular shapes, and the lower side joint piece has its upper end inscribed in the other end and lower end of the upper side joint piece facing one end to the other. The joint structure for a reinforcement ring for a liner plate according to claim 1 or 2, wherein the joint structure is formed in a concave portion and formed into a substantially rectangular joint plate in a state in which both are combined.

The said upper side coupling piece is being fixed to the upper part of the natural mountain side flange in the edge part of a reinforcement ring piece by the bolting, screwing, or welding, It is any one of Claims 1-4 characterized by the above-mentioned. Joint structure of reinforcing ring piece for liner plate.

Reinforcing ring pieces made of H-section steel, which are constituent elements of a reinforcing ring for liner plates that are attached up and down with respect to the wall of a shaft constructed by connecting liner plates, are arranged on the natural ground side and inside the shaft The joint plate provided on the natural ground flange of the flange is composed of an upper joint piece provided at the upper part of the outer surface of the natural ground side flange at the end of the reinforcing ring piece facing each other , and a reinforcing ring piece at the lower part of the outer surface of the natural ground side flange. end provided with one and the lower joint piece provided across both, characterized in that the upper side joint pieces are formed by fitted into the recess in which the lower side joint piece is provided, the joint Board.

A joint method of a reinforcing ring for a liner plate that is attached up and down with respect to a wall of a shaft constructed by connecting liner plates,
The reinforcing ring for liner plate has a plurality of reinforcing ring pieces made of H-shaped steel, the flanges are arranged on the natural ground side and the inside of the pit, the ends of the reinforcing ring pieces face each other in the circumferential direction, and the joint plate is Configured by joining via
The joint plate provided on the ground-side flange of the reinforcing ring piece is provided with an upper-side joint piece at the upper part of the ground-side flange at the end part of the reinforcing ring piece facing each other, and 1 at the lower part straddling both ends of the reinforcing ring piece. Two lower side joint pieces are provided, and the upper side joint piece fits into a recess provided in the lower side joint piece, so that the stress can be transmitted and contacted,
After facing the ends of the reinforcing ring pieces that fixed the upper side joint piece to the top of the natural ground side flange, the lower side joint piece is brought into contact with two adjacent upper side joint pieces so that stress can be transmitted,
The ground-side flanges at the ends of the reinforcing ring pieces facing each other have bolt holes on at least the lower side of the both sides, and the lower joint pieces have bolt holes at positions corresponding to the bolt holes, and coincide with each other. Reinforcement for liner plate, characterized in that a bolt is inserted into a bolt hole and fastened with a nut, and the lower joint piece is fixed across both ground-side flanges at the ends of the reinforcing ring pieces facing each other. Ring coupling method.