JPH08277698A - Segment for tunnel - Google Patents

Segment for tunnel

Info

Publication number
JPH08277698A
JPH08277698A JP7081056A JP8105695A JPH08277698A JP H08277698 A JPH08277698 A JP H08277698A JP 7081056 A JP7081056 A JP 7081056A JP 8105695 A JP8105695 A JP 8105695A JP H08277698 A JPH08277698 A JP H08277698A
Authority
JP
Japan
Prior art keywords
segment
inner peripheral
peripheral side
main body
tunnel
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.)
Granted
Application number
JP7081056A
Other languages
Japanese (ja)
Other versions
JP3587582B2 (en
Inventor
Tsutomu Aiba
勉 相場
Takashi Watanabe
崇志 渡辺
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.)
Kubota Corp
Original Assignee
Kubota 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 Kubota Corp filed Critical Kubota Corp
Priority to JP08105695A priority Critical patent/JP3587582B2/en
Publication of JPH08277698A publication Critical patent/JPH08277698A/en
Application granted granted Critical
Publication of JP3587582B2 publication Critical patent/JP3587582B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Lining And Supports For Tunnels (AREA)

Abstract

PURPOSE: To provide a means capable of resolving multiple problems occurring when a conventional segment is used, i.e., the problem of the corrosion of a segment main body, the problem of the friction loss of a conduction body in a tunnel, and the trouble of the strength of an inner periphery section, at once. CONSTITUTION: A segment main body 1 is formed so that the end face 2a on the inner periphery side of a plate-like vertical rib 2 is retreated to the outer periphery side than the peripheral edge on the inner periphery side of the segment main body 1. Linear steel products 6 for reinforcement are arranged on the inner periphery side of the plate-like vertical rib 2. Concrete is placed from the inside to bury the linear steel products 6.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、トンネルの周方向及び
軸方向に多数並べて互いに連結することによりトンネル
内壁を形成可能で、内周側に凹部を有する筐状の鉄(鋳
鉄や鋼を含む。以下同じ)製セグメント本体に、そのセ
グメント本体の内周側で前記凹部内に立設されて前記軸
方向に延在する複数枚の板状縦リブと、前記内周側に立
設されて前記周方向に延在する桁部とがあるトンネル用
セグメントに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can form an inner wall of a tunnel by arranging a plurality of them in the circumferential and axial directions and connecting them to each other. The same shall apply hereinafter), a plurality of plate-shaped vertical ribs extending in the axial direction and standing in the recess on the inner peripheral side of the segment main body, and standing on the inner peripheral side. The present invention relates to a tunnel segment having a girder portion extending in the circumferential direction.

【0002】[0002]

【従来の技術】このようなトンネル用セグメントとして
は、従来、筐状の鉄製(例えば、ダクタイル鋳鉄製)セ
グメント本体の凹部をそのまま内周側に露出させたもの
(以下、第1の従来セグメントという)があった。ま
た、強度の向上、トンネル内の通流体の摩擦損失の抑止
等のため、前記凹部を含み、セグメントの内径側に2次
覆工としてコンクリートを打設するようになっているも
の(以下、第2の従来セグメントという)もあった。
2. Description of the Related Art Conventionally, as such a tunnel segment, a recess of a casing-shaped iron (for example, ductile cast iron) segment main body is exposed as it is to the inner peripheral side (hereinafter referred to as a first conventional segment). )was there. Further, in order to improve the strength, suppress the friction loss of the fluid passing through the tunnel, and the like, concrete is placed as a secondary lining on the inner diameter side of the segment including the recess (hereinafter, 2 conventional segment).

【0003】[0003]

【発明が解決しようとする課題】上述の第1の従来セグ
メントを用いてトンネル内壁を形成した場合において、
セグメント内周部にコンクリート層を現場で形成する2
次覆工を実施しないときには、鉄製(例えば、ダクタイ
ル鋳鉄製)のセグメント本体の内周部がそのままトンネ
ル内に露出するため、前記セグメント本体に腐食が発生
することがあるという問題があった。また、前記セグメ
ント本体の内周部に凹凸が存在するため、その凹凸が抵
抗となって、トンネル内の通流体の摩擦損失が大きくな
るという問題もあった。本発明は、このような実情に着
目してなされたものであり、上述した、第1の従来セグ
メントや第2の従来セグメントを使用するときに生じる
複数の問題、即ち、前記セグメント本体の腐食の問題や
トンネル内の通流体の摩擦損失の問題を一挙に解消し得
る手段を提供することを目的としている。
In the case where the tunnel inner wall is formed by using the above-mentioned first conventional segment,
Forming a concrete layer on the site inside the segment 2
When the next lining is not performed, the inner peripheral portion of the iron (for example, ductile cast iron) segment main body is exposed as it is in the tunnel, and there is a problem that the segment main body may be corroded. Further, since there are irregularities on the inner peripheral portion of the segment body, the irregularities act as resistance, and there is a problem that friction loss of the fluid passing through the tunnel increases. The present invention has been made by paying attention to such an actual situation, and there are a plurality of problems that occur when the first conventional segment or the second conventional segment is used, that is, the corrosion of the segment body. It is an object of the present invention to provide a means capable of solving all of the problems and the problems of friction loss of the fluid flowing through the tunnel.

【0004】[0004]

【課題を解決するための手段】本発明に係るトンネル用
セグメント(以下、本発明セグメントという)の特徴構
成は、トンネルの周方向及び軸方向に多数並べて互いに
連結することによりトンネル内壁を形成可能で、内周側
に凹部を有する筐状の鉄製セグメント本体に、そのセグ
メント本体の内周側で前記凹部内に立設されて前記軸方
向に延在する複数枚の板状縦リブと、前記内周側に立設
されて前記周方向に延在する桁部とがあるトンネル用セ
グメントであって、前記板状縦リブの内周側端面を、前
記セグメント本体の内周側周縁よりも外周側へ後退させ
る形状に、前記セグメント本体を形成すると共に、前記
板状縦リブの内周側に、補強用の線状鋼材を配置し、前
記線状鋼材を、その内側からコンクリートを出設して埋
没させてある点にある。尚、前記内周側にジベル等を設
ける等、補強手段を適宜施した上で、その内径側からコ
ンクリートを打設するということも考えられる。
A characteristic feature of a tunnel segment according to the present invention (hereinafter referred to as the present invention segment) is that it is possible to form a tunnel inner wall by arranging a plurality of tunnel segments in the circumferential direction and axial direction and connecting them. , A casing-shaped iron segment main body having a recess on the inner peripheral side, a plurality of plate-shaped vertical ribs extending upright in the axial direction in the recess on the inner peripheral side of the segment main body, and the inner A tunnel segment having a girder portion extending upright in the circumferential direction and extending in the circumferential direction, wherein an inner peripheral side end surface of the plate-shaped vertical rib is outer peripheral side than an inner peripheral side peripheral edge of the segment main body. In the shape of retreating to, while forming the segment main body, on the inner peripheral side of the plate-shaped vertical ribs, a reinforcing linear steel material is arranged, the linear steel material, concrete from the inside To the buried point That. It is also conceivable that concrete is placed from the inner diameter side of the inner peripheral side after appropriately providing reinforcing means such as providing a dowel or the like.

【0005】[0005]

【作用】上記特徴構成を備えた本発明セグメントによれ
ば、前記板状縦リブの内周側端面が、前記セグメント本
体の内周側周縁よりも外周側へ後退し、その内周側端面
を被覆するコンクリートが内周側から打設されているた
め、本発明セグメントにおける本体内周側端面は、その
周縁部(条件次第では、その周縁部及び桁部内周側端
面)を除いて、前記内周側へ露出する面とはならない。
従って、本発明セグメントを用いる場合には、前記2次
覆工を実施しないときでも、鉄製のセグメント本体の内
周部の大部分がそのままトンネル内に露出するというこ
とが回避され、その露出回避に基づいて、前記鉄製のセ
グメント本体の腐食発生が抑止されるようになる。ま
た、前記内周側の端面を被覆するコンクリートが打設さ
れているので、前記セグメント本体の内周部を滑らかに
することができる。従って、その内周部の円滑化によっ
て、前記トンネル内の通流体の摩擦損失が小さくなる。
更に、前記コンクリートの打設部分においては、前記板
状縦リブの内周側に、補強用の線状鋼材が配置でき、そ
の線状鋼材を埋没させるように前記コンクリートの打設
が可能になるので、前記コンクリートの内周部の強度が
前記線状鋼材の存在によって向上し、その強度向上によ
って、前記コンクリートの内周部でのクラックや脱落の
発生が回避されるようになる。
According to the segment of the present invention having the above-mentioned characteristic structure, the inner peripheral side end surface of the plate-shaped vertical rib recedes to the outer peripheral side from the inner peripheral side peripheral edge of the segment main body, and the inner peripheral side end surface is Since the concrete to be coated is cast from the inner peripheral side, the inner peripheral side end surface of the main body in the segment of the present invention is the same as the inner peripheral surface except the peripheral portion (the peripheral portion and the girder inner peripheral side end surface depending on conditions). It is not a surface exposed to the circumference.
Therefore, when the segment of the present invention is used, even if the secondary lining is not carried out, it is avoided that most of the inner peripheral portion of the iron segment main body is exposed as it is in the tunnel. Based on this, the occurrence of corrosion of the iron segment body is suppressed. Moreover, since the concrete covering the end surface on the inner peripheral side is cast, the inner peripheral portion of the segment main body can be made smooth. Therefore, the friction loss of the fluid passing through the tunnel is reduced by smoothing the inner peripheral portion.
Further, in the cast portion of the concrete, a reinforcing linear steel material can be arranged on the inner peripheral side of the plate-shaped vertical ribs, and the concrete can be cast so as to bury the linear steel material. Therefore, the strength of the inner peripheral portion of the concrete is improved by the presence of the linear steel material, and by the strength improvement, the occurrence of cracks or falling off at the inner peripheral portion of the concrete is avoided.

【0006】[0006]

【発明の効果】従って、本発明セグメントによれば、前
述した第1の従来セグメントや第2の従来セグメントを
使用するときに生じる複数の問題、即ち、前記セグメン
ト本体の腐食の問題やトンネル内の通流体の摩擦損失の
問題が一挙に解消されて、本発明の目的が達成されるよ
うになる。
Therefore, according to the segment of the present invention, there are a plurality of problems that occur when the above-mentioned first conventional segment and the second conventional segment are used, that is, the problem of corrosion of the segment body and the problem in the tunnel. The problem of friction loss of the fluid flow is solved all at once, and the object of the present invention is achieved.

【0007】[0007]

【実施例】以下、本発明の実施例を図面に基づいて説明
する。
Embodiments of the present invention will be described below with reference to the drawings.

【0008】図1〜図4には、本発明セグメントの第1
実施例が示されている。尚、図1及び図2にはコンクリ
ート打設前の状態が示されており、図3及び図4にはコ
ンクリート打設後の状態が示されている。図中、1は、
トンネルの周方向及び軸方向に多数並べて互いに連結す
ることによりトンネル内壁を形成可能で、内側に凹部を
有する円弧筐状で鉄製(具体的には、ダクタイル鋳鉄
製)のセグメント本体である。尚、前記連結の方式とし
ては、例えば、隣り合うセグメントを、その両者に跨が
るように挿入される楔(くさび)を用いて止める楔止め
方式(図外)や、隣り合うセグメントを、その両者に跨
がるように通されるボルトを介して連結するボルト連結
方式(図外)等が採用されている。前記セグメント本体
1には、そのセグメント本体1の内周側で前記凹部内に
立設されて前記軸方向に延在する複数枚(本実施例で
は、3枚)の板状縦リブ2が設けられている(図1参
照)。また、前記セグメント本体1には、前記内周側に
立設されて前記周方向に延在する桁部3がある。その桁
部3は、前記周方向に平行配置される3枚のものからな
り、それらのうちの両端側2枚は、前記セグメント本体
1の筐部の一部を構成し、残りの1枚は、前記凹部内の
中央に前記板状縦リブ2と直交する状態で立設されてい
る(図1参照)。前記セグメント本体1は、前記板状縦
リブ2の内周側端面2aを前記セグメント本体1の内周
側周縁よりも外周側へ後退させる形状に形成されている
(図2参照)。尚、本実施例においては、前記凹部内の
中央に設けられた桁部3の内周側端面も、前記セグメン
ト本体1の内周側周縁よりも外周側へ後退させる形状に
形成されている。そして、その板状縦リブ2(及び前記
中央部の桁部3)の内周側には、補強用の線状鋼材6
(具体的には、鉄筋)が複数本(具体的には、4本)配
置され、更にその線状鋼材6は、その内側からのコンク
リート4の打設によって埋没されるようになっている
(図3、図4参照)。尚、前記線状鋼材6の前記板状縦
リブ2の内周側への配置を容易にするため、前記板状縦
リブ2の内周側端部には、前記線状鋼材6を位置決め自
在な窪み2bが形成されている。
1 to 4 show a first segment of the present invention.
Examples are given. It should be noted that FIGS. 1 and 2 show the state before the concrete is poured, and FIGS. 3 and 4 show the state after the concrete is poured. In the figure, 1 is
It is a segment main body made of iron (specifically, made of ductile cast iron) in an arc housing having a concave portion inside, in which a plurality of tunnel inner walls can be formed by arranging them in the circumferential direction and the axial direction of the tunnel and connecting them to each other. In addition, as the connection method, for example, a wedge fixing method (not shown) for stopping adjacent segments by using a wedge (wedge) inserted so as to straddle both of them, or an adjacent segment A bolt connection method (not shown) or the like is used in which a bolt is connected so as to extend over the both. The segment main body 1 is provided with a plurality of (three in the present embodiment) plate-shaped vertical ribs 2 that are erected in the recess on the inner peripheral side of the segment main body 1 and extend in the axial direction. (See FIG. 1). In addition, the segment body 1 has a girder portion 3 which is erected on the inner peripheral side and extends in the circumferential direction. The girder portion 3 is composed of three pieces arranged in parallel in the circumferential direction, two of them on both end sides constitute a part of the casing portion of the segment main body 1, and the remaining one piece is , Is provided upright in the center of the recess so as to be orthogonal to the plate-shaped vertical ribs 2 (see FIG. 1). The segment main body 1 is formed in a shape in which the inner peripheral side end surface 2a of the plate-shaped vertical rib 2 is retracted to the outer peripheral side from the inner peripheral side peripheral edge of the segment main body 1 (see FIG. 2). In addition, in the present embodiment, the inner peripheral side end surface of the girder portion 3 provided in the center of the concave portion is also formed in a shape to be retracted to the outer peripheral side from the inner peripheral side peripheral edge of the segment main body 1. The reinforcing linear steel material 6 is provided on the inner peripheral side of the plate-shaped vertical ribs 2 (and the girder portion 3 in the central portion).
(Specifically, a plurality of (specifically, four) reinforcing bars) are arranged, and the linear steel material 6 is further buried by pouring concrete 4 from the inside ( (See FIGS. 3 and 4). In order to facilitate the arrangement of the linear steel material 6 on the inner peripheral side of the plate-shaped vertical rib 2, the linear steel material 6 can be positioned at the inner peripheral side end of the plate-shaped vertical rib 2. The hollow 2b is formed.

【0009】図5及び図6には、本発明セグメントの第
2実施例が示されている。尚、図5にはコンクリート打
設前の状態が示されており、図6にはコンクリート打設
後の状態が示されている。尚、この第2実施例を示す図
面において第1実施例と同一の符号で表示した部分は同
一又は相当の部分を示している。図中、1は、第1実施
例と同様、トンネルの周方向及び軸方向に多数並べて互
いに連結することによりトンネル内壁を形成可能で、内
側に凹部を有する円弧筐状で鉄製(具体的には、ダクタ
イル鋳鉄製)のセグメント本体である。前記セグメント
本体1には、そのセグメント本体1の内周側で前記凹部
内に立設されて前記軸方向に延在する複数枚の板状縦リ
ブ2が設けられている。また、前記セグメント本体1に
は、前記内周側に立設されて前記周方向に延在する桁部
3がある。その桁部3は、前記周方向に平行配置される
2枚のものからなり、それら2枚の桁部3は、前記セグ
メント本体1の筐部の一部を構成している。前記セグメ
ント本体1は、前記板状縦リブ2の内周側端面2aを前
記セグメント本体1の内周側周縁よりも外周側へ後退さ
せる形状に形成されている(図5参照)。そして、その
板状縦リブ2の内周側には、補強用の線状鋼材6(具体
的には、鉄筋)が複数本(具体的には、3本)配置さ
れ、更にその線状鋼材6は、その内側からのコンクリー
ト4の打設によって埋没されるようになっている(図6
参照)。尚、前記線状鋼材6の前記板状縦リブ2の内周
側への配置を容易にするため、前記板状縦リブ2の内周
側端部には、前記線状鋼材6を位置決め自在な窪み2b
が形成されている。
FIGS. 5 and 6 show a second embodiment of the segment according to the invention. It should be noted that FIG. 5 shows a state before concrete pouring, and FIG. 6 shows a state after concrete pouring. In the drawings showing the second embodiment, the portions denoted by the same reference numerals as those in the first embodiment indicate the same or corresponding portions. In the figure, as in the first embodiment, reference numeral 1 denotes an inner wall of the tunnel which can be formed by arranging them in a line in the circumferential direction and the axial direction of the tunnel and connecting them to each other. , Made of ductile cast iron). The segment main body 1 is provided with a plurality of plate-shaped vertical ribs 2 which are erected in the recess on the inner peripheral side of the segment main body 1 and extend in the axial direction. In addition, the segment body 1 has a girder portion 3 which is erected on the inner peripheral side and extends in the circumferential direction. The girder portion 3 is composed of two sheets arranged in parallel in the circumferential direction, and the two girder portions 3 form a part of the casing portion of the segment main body 1. The segment main body 1 is formed in a shape in which the inner peripheral side end surface 2a of the plate-shaped vertical rib 2 is retracted to the outer peripheral side from the inner peripheral side peripheral edge of the segment main body 1 (see FIG. 5). Then, on the inner peripheral side of the plate-shaped vertical ribs 2, a plurality of reinforcing linear steel materials 6 (specifically, reinforcing bars) are arranged (specifically, 3), and the linear steel materials are further arranged. 6 is buried by pouring concrete 4 from the inside (FIG. 6).
reference). In order to facilitate the arrangement of the linear steel material 6 on the inner peripheral side of the plate-shaped vertical rib 2, the linear steel material 6 can be positioned at the inner peripheral side end of the plate-shaped vertical rib 2. Nag 2b
Are formed.

【0010】図7及び図8には、本発明セグメントの第
3実施例が示されている。尚、図7にはコンクリート打
設前の状態が示されており、図8にはコンクリート打設
後の状態が示されている。尚、この第3実施例を示す図
面において第1実施例と同一の符号で表示した部分は同
一又は相当の部分を示している。図中、1は、第1実施
例及び第2実施例と同様、トンネルの周方向及び軸方向
に多数並べて互いに連結することによりトンネル内壁を
形成可能で、内側に凹部を有する円弧筐状で鉄製(具体
的には、ダクタイル鋳鉄製)のセグメント本体である。
前記セグメント本体1には、そのセグメント本体1の内
周側で前記凹部内に立設されて前記軸方向に延在する複
数枚の板状縦リブ2が設けられている。また、前記セグ
メント本体1には、前記内周側に立設されて前記周方向
に延在する桁部3がある。その桁部3は、セグメント本
体1の幅方向両端部で平行に配置された2枚の桁部3A
と、セグメント本体1の幅方向中央部で前記桁部3Aと
平行となるように前記本体1が屈曲形成された板状の桁
部3Bとからなる。尚、前記両端部の桁部3Aは、前記
セグメント本体1の筐部の一部を構成している。前記セ
グメント本体1は、前記板状縦リブ2の内周側端面2a
を前記セグメント本体1の内周側周縁よりも外周側へ後
退させる形状に形成されている(図7参照)。そして、
その板状縦リブ2の内周側には、補強用の線状鋼材6
(具体的には、鉄筋)が複数本(具体的には、2本)配
置され、更にその線状鋼材6は、その内側からのコンク
リート4の打設によって埋没されるようになっている
(図8参照)。尚、前記線状鋼材6の前記板状縦リブ2
の内周側への配置を容易にするため、前記板状縦リブ2
の内周側端部には、前記線状鋼材6を位置決め自在な窪
み2bが形成されている。尚、本実施例では、前記セグ
メント本体1の外周側の凹部にも、コンクリート5が打
設されている。
FIGS. 7 and 8 show a third embodiment of the segment of the present invention. It should be noted that FIG. 7 shows a state before pouring concrete, and FIG. 8 shows a state after pouring concrete. In the drawings showing the third embodiment, the portions indicated by the same reference numerals as those in the first embodiment indicate the same or corresponding portions. In the figure, as in the first and second embodiments, reference numeral 1 denotes an inner wall of the tunnel which can be formed by arranging a plurality of them in the circumferential direction and the axial direction of the tunnel and connecting them to each other. (Specifically, it is a segment body of ductile cast iron).
The segment main body 1 is provided with a plurality of plate-shaped vertical ribs 2 which are erected in the recess on the inner peripheral side of the segment main body 1 and extend in the axial direction. In addition, the segment body 1 has a girder portion 3 which is erected on the inner peripheral side and extends in the circumferential direction. The girder portion 3 includes two girder portions 3A arranged in parallel at both widthwise end portions of the segment body 1.
And a plate-shaped girder portion 3B in which the main body 1 is bent and formed so as to be parallel to the girder portion 3A at the widthwise center of the segment body 1. The girders 3A at the both ends constitute a part of the casing of the segment main body 1. The segment main body 1 includes an inner peripheral end surface 2a of the plate-shaped vertical rib 2.
Is formed so as to recede to the outer peripheral side from the inner peripheral side peripheral edge of the segment main body 1 (see FIG. 7). And
On the inner peripheral side of the plate-shaped vertical rib 2, a reinforcing linear steel material 6 is provided.
(Specifically, a plurality of (specifically, two) reinforcing bars) are arranged, and the linear steel material 6 is buried by pouring concrete 4 from the inside ( (See FIG. 8). The plate-shaped vertical ribs 2 of the linear steel material 6
The plate-shaped vertical ribs 2 for facilitating the arrangement on the inner peripheral side of the
A recess 2b is formed at the end of the inner peripheral side of which the linear steel material 6 can be positioned. In this embodiment, concrete 5 is also placed in the recess on the outer peripheral side of the segment body 1.

【0011】次に、別実施例について説明する。 〔1〕上述した各実施例における板状縦リブ2や桁部3
や線状鋼材6の個数や形態は、上述した特定の個数や形
態に限定されない。例えば、前記線状鋼材6としては、
上述した鉄筋以外のもの、具体的には、鋼製の板状体や
鉄筋でない棒状体を採用してもよい。 〔2〕上述した各実施例は、セグメント本体1の形状が
円弧筐状であり、その本体1を要部とするセグメントを
用いて形成したトンネル内壁が円形となる実施例であっ
たが、本発明のセグメントを用いて形成したトンネル内
壁が矩形となるものであってもよい。この場合、前記セ
グメント本体1の大半のものは、その全体形状が直方体
の筐状(図示せず)となる。 〔3〕上述した各実施例においては、セグメント本体1
の材質がダクタイル鋳鉄であったが、その材質は、適宜
選択された鋼であってもよい。
Next, another embodiment will be described. [1] Plate-shaped vertical ribs 2 and girder portions 3 in each of the above-described embodiments
The number and shape of the linear steel materials 6 are not limited to the specific number and shape described above. For example, as the linear steel material 6,
Other than the above-mentioned reinforcing bars, specifically, a plate-shaped body made of steel or a rod-shaped body that is not a reinforcing bar may be adopted. [2] In each of the above-described embodiments, the shape of the segment main body 1 is an arcuate casing, and the inner wall of the tunnel formed by using the segment having the main body 1 as a main portion is circular. The inner wall of the tunnel formed using the segment of the invention may be rectangular. In this case, most of the segment main body 1 has a rectangular parallelepiped casing shape (not shown). [3] In each of the above embodiments, the segment body 1
The material was ductile cast iron, but the material may be appropriately selected steel.

【0012】尚、特許請求の範囲の項に図面との対照を
便利にする為に符号を記すが、該記入により本発明は添
付図面の構成に限定されるものではない。
It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の第1実施例でコンクリート打設前の状
態を示す斜視図
FIG. 1 is a perspective view showing a state before placing concrete in a first embodiment of the present invention.

【図2】その縦断面図[Figure 2] Its vertical section

【図3】本発明の第1実施例でコンクリート打設後の状
態を示す斜視図
FIG. 3 is a perspective view showing a state after placing concrete in the first embodiment of the present invention.

【図4】その縦断面図FIG. 4 is a vertical sectional view thereof.

【図5】本発明の第2実施例でコンクリート打設前の状
態を示す縦断面図
FIG. 5 is a longitudinal sectional view showing a state before concrete is poured in a second embodiment of the present invention.

【図6】本発明の第2実施例でコンクリート打設後の状
態を示す縦断面図
FIG. 6 is a longitudinal sectional view showing a state after concrete is poured in the second embodiment of the present invention.

【図7】本発明の第3実施例でコンクリート打設前の状
態を示す縦断面図
FIG. 7 is a vertical cross-sectional view showing a state before placing concrete in a third embodiment of the present invention.

【図8】本発明の第3実施例でコンクリート打設後の状
態を示す縦断面図
FIG. 8 is a vertical cross-sectional view showing a state after placing concrete in the third embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 セグメント本体 2 板状縦リブ 2a 内周側端面 3 桁部 4 コンクリート 6 線状鋼材 1 segment main body 2 plate-shaped vertical ribs 2a inner peripheral side end face 3 girder portion 4 concrete 6 linear steel material

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 トンネルの周方向及び軸方向に多数並べ
て互いに連結することによりトンネル内壁を形成可能
で、内周側に凹部を有する筐状の鉄製セグメント本体
(1)に、そのセグメント本体(1)の内周側で前記凹
部内に立設されて前記軸方向に延在する複数枚の板状縦
リブ(2)と、前記内周側に立設されて前記周方向に延
在する桁部(3)とがあるトンネル用セグメントであっ
て、 前記板状縦リブ(2)の内周側端面(2a)を、前記セ
グメント本体(1)の内周側周縁よりも外周側へ後退さ
せる形状に、前記セグメント本体(1)を形成すると共
に、前記板状縦リブ(2)の内周側に、補強用の線状鋼
材(6)を配置し、前記線状鋼材(6)を、その内側か
らコンクリート(4)を打設して埋没させてあるトンネ
ル用セグメント。
1. A tunnel inner wall can be formed by arranging a plurality of them in the circumferential direction and the axial direction of the tunnel and connecting them to each other, and a casing-shaped iron segment main body (1) having a recessed portion on the inner peripheral side thereof. ) A plurality of plate-shaped vertical ribs (2) standing in the recess on the inner peripheral side and extending in the axial direction, and a girder standing on the inner peripheral side and extending in the circumferential direction A segment for a tunnel having a portion (3), in which an inner peripheral side end surface (2a) of the plate-shaped vertical rib (2) is retracted to an outer peripheral side rather than an inner peripheral edge of the segment main body (1). In the shape, the segment main body (1) is formed, and a reinforcing linear steel material (6) is arranged on the inner peripheral side of the plate-shaped vertical ribs (2), and the linear steel material (6) is A tunnel segment in which concrete (4) is cast from the inside and buried.
JP08105695A 1995-04-06 1995-04-06 Segment for tunnel Expired - Fee Related JP3587582B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP08105695A JP3587582B2 (en) 1995-04-06 1995-04-06 Segment for tunnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP08105695A JP3587582B2 (en) 1995-04-06 1995-04-06 Segment for tunnel

Publications (2)

Publication Number Publication Date
JPH08277698A true JPH08277698A (en) 1996-10-22
JP3587582B2 JP3587582B2 (en) 2004-11-10

Family

ID=13735760

Family Applications (1)

Application Number Title Priority Date Filing Date
JP08105695A Expired - Fee Related JP3587582B2 (en) 1995-04-06 1995-04-06 Segment for tunnel

Country Status (1)

Country Link
JP (1) JP3587582B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009084976A (en) * 2007-10-03 2009-04-23 Tokyu Construction Co Ltd Structure of segment
JP2012127190A (en) * 2012-03-30 2012-07-05 Tokyu Construction Co Ltd Structure of segment
JP2016094821A (en) * 2011-04-12 2016-05-26 鹿島建設株式会社 Synthetic concrete filled steel segment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009084976A (en) * 2007-10-03 2009-04-23 Tokyu Construction Co Ltd Structure of segment
JP2016094821A (en) * 2011-04-12 2016-05-26 鹿島建設株式会社 Synthetic concrete filled steel segment
JP2018059396A (en) * 2011-04-12 2018-04-12 鹿島建設株式会社 Synthetic concrete filled steel segment
JP2012127190A (en) * 2012-03-30 2012-07-05 Tokyu Construction Co Ltd Structure of segment

Also Published As

Publication number Publication date
JP3587582B2 (en) 2004-11-10

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