JPH10238295A - Steel shell segment - Google Patents
Steel shell segmentInfo
- Publication number
- JPH10238295A JPH10238295A JP9052544A JP5254497A JPH10238295A JP H10238295 A JPH10238295 A JP H10238295A JP 9052544 A JP9052544 A JP 9052544A JP 5254497 A JP5254497 A JP 5254497A JP H10238295 A JPH10238295 A JP H10238295A
- Authority
- JP
- Japan
- Prior art keywords
- steel shell
- sides
- diameter side
- steel
- face
- 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.)
- Pending
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、トンネル覆工に用いら
れる鋼製周縁枠を有する鋼殻セグメントに関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel shell segment having a steel peripheral frame used for tunnel lining.
【0002】[0002]
【従来の技術】従来、シールドトンネルを掘進する際に
使用される覆工用鋼殻セグメントの連結構造として、特
開平5−256096号公報に開示されたものが知られ
ている。2. Description of the Related Art Conventionally, as a connecting structure of lining steel shell segments used when excavating a shield tunnel, one disclosed in Japanese Patent Application Laid-Open No. H5-256096 is known.
【0003】前記従来のセグメントの連結構造の場合
は、連結すべき一方の鋼殻の後端部におけるH形断面の
後部鋼殻の外側フランジに、トンネル軸方向にみて前方
から後方に向かって縮径するテーパー外面を設け、かつ
前記H形断面の後部鋼殻の内側フランジに前方から後方
に向かって縮径するテーパー外面を設け、また後続する
他方の鋼殻の前端部におけるH形断面の前部鋼殻の外側
フランジの内側に、前方から後方に向かって縮径するテ
ーパー内面を設け、かつ前記H形断面の前部鋼殻の内側
フランジに、前方から後方に向かって縮径するテーパー
内面を設けたものが知られている。In the case of the conventional segment connecting structure, the outer flange of the rear steel shell having an H-shaped cross section at the rear end of one of the steel shells to be connected is contracted from front to rear as viewed in the tunnel axial direction. A tapered outer surface that reduces the diameter of the H-shaped section, an inner flange of the rear steel shell having the H-shaped section has a tapered outer surface that decreases in diameter from front to rear, and a front end of the H-shaped section at the front end of the other steel shell that follows. Inside the outer flange of the steel shell, there is provided a tapered inner surface that decreases in diameter from the front to the rear, and the inner flange of the front steel shell having the H-shaped section has a tapered inner surface that reduces the diameter from the front to the rear. Is known.
【0004】そして、トンネル軸方向に前後のセグメン
トを嵌合連結する場合は、前部のH形断面の後部の内側
フランジおよび外側フランジに、後部の鋼殻セグメント
における外側フランジおよび内側フランジを嵌合してい
る。When connecting the front and rear segments in the axial direction of the tunnel, the outer flange and the inner flange of the rear steel shell segment are fitted to the rear inner flange and the outer flange of the front H-shaped section. doing.
【0005】[0005]
【発明が解決しようとする課題】前記従来のセグメント
の連結構造の場合は、図12、図13に示すように、ト
ンネル軸方向にみて前後方向に隣り合う鋼殻セグメント
のフランジ28の傾斜面29間に止水材30を設けてい
るが、嵌合時にフランジ28の嵌込側の先端部が止水材
30を損傷することがあり、トンネル軸方向の前後に隣
り合う鋼殻セグメントの間から漏水することがある。In the case of the conventional segment connecting structure, as shown in FIGS. 12 and 13, the inclined surface 29 of the flange 28 of the steel shell segment adjacent in the front-back direction as viewed in the tunnel axial direction. The water-stopping material 30 is provided between the steel shell segments, but the tip of the flange 28 on the fitting side may damage the water-stopping material 30 at the time of fitting. May leak.
【0006】本発明は前述の課題を解決すると共に、ト
ンネル軸方向とトンネル円周方向の接合をリング状止水
パッキングを用いて行うことにより、前記両方向の接合
部の止水を完璧に行なえる鋼殻セグメントを提供するこ
とを目的とする。[0006] The present invention solves the above-mentioned problems, and completes the water stopping at the joints in the two directions by performing the joining in the tunnel axial direction and the tunnel circumferential direction using a ring-shaped water stopping packing. It is intended to provide a steel shell segment.
【0007】[0007]
【課題を解決するための手段】本発明に係る鋼殻セグメ
ントは、正面が円弧状で平面が矩形であり、ウエブを介
して結合された鋼製外側フランジと鋼製内側フランジか
ら構成される鋼殻セグメントにおいて、前記外側と内側
の鋼製フランジのうち、両方又は一方のフランジの平面
矩形部を対角線で2分した場合における第1のL形2辺
の側縁部と、第2のL形2辺の側縁部のうちの一方の側
縁肉厚部の内径側を段部を介して外径側よりも突出させ
て突出接合端面とすると共に、外径側を凹み部接合端面
とし、他方の側縁肉厚部の外径側を段部を介して内径側
よりも突出させて突出部接合端面とすると共に、内径側
を凹み部接合端面とし、第1と第2のL形2辺の前記各
凹み部接合端面に沿って平面が矩形の4辺にわたり止水
パッキングが嵌合する嵌合溝を設けた構成を特徴とす
る。また、本発明では、前記嵌合溝は、第1と第2のL
形2辺が隣設する隅角部において内外径側に段差部を有
して隣設しており、前記止水パッキングは、前記段差部
において、内外径側に位置ずれして前記第1と第2のL
形2辺に形成され、かつ平面矩形の隅角部を含む4辺に
わたり形成される嵌合溝に嵌合するように伸長している
構成を特徴とする。本発明では、トンネル軸方向とトン
ネル円周方向に鋼殻セグメントを接合するとき、相対し
て配設される各鋼製セグメントの第1と第2のL形2辺
の側縁部の突出部接合端面と凹み部接合端面が互いに係
合することで、各鋼殻セグメントは、トンネル軸方向、
トンネル円周方向ともに内外径側にずれないようしっか
りと係合し、さらに、平面矩形の隅角部を含む4辺にわ
たり形成される嵌合溝に嵌合の止水パッキングにより、
各鋼殻セグメントのトンネル軸方向とトンネル円周方向
の両接合部の止水が完璧に行われる。SUMMARY OF THE INVENTION A steel shell segment according to the present invention has an arcuate front surface and a rectangular flat surface, and includes a steel outer flange and a steel inner flange connected via a web. In the shell segment, a side edge of two sides of a first L-shape when a plane rectangular portion of both or one of the outer and inner steel flanges is diagonally divided into two, and a second L-shape. The inner diameter side of one side edge thick portion of the two side edge portions is made to protrude from the outer diameter side via the step portion to be a projecting joint end surface, and the outer diameter side is a concave portion joint end surface, An outer diameter side of the other side edge thick part is protruded from an inner diameter side through a step portion to form a projection joint end face, and an inner diameter side is a concave joint end face, and the first and second L-shapes 2 are formed. Waterproof packing fits over four sides of a rectangular plane along the joint end surface of each of the dents on the side Characterized structure provided with the fitting groove that. Further, in the present invention, the fitting groove includes the first and second L
The two corners are adjacent to each other with a step on the inner and outer diameter sides at the corners adjacent to each other, and the water-stop packing is displaced toward the inner and outer diameter sides at the step, and the first and second waterproof packings are displaced. The second L
It is characterized in that it is formed on two sides of the shape and extends so as to fit into a fitting groove formed over four sides including the corners of the plane rectangle. According to the present invention, when the steel shell segments are joined in the tunnel axial direction and the tunnel circumferential direction, the protrusions of the side edges of the first and second L-shaped two sides of each of the steel segments disposed opposite to each other. By joining the joint end face and the concave joint end face to each other, each steel shell segment is in the tunnel axial direction,
By tightly engaging not to shift to the inner and outer diameter sides in the tunnel circumferential direction, and furthermore, by waterproof packing of fitting into fitting grooves formed over four sides including corners of a flat rectangle,
The water stopping at both the joints in the axial direction and the circumferential direction of the tunnel of each steel shell segment is perfectly performed.
【0008】[0008]
【発明の実施の形態】以下、本発明の実施の形態を図を
参照して説明する。図1は、本発明に係る鋼殻セグメン
トの湾曲凸面を上にした斜視図、図2は図1の平面図、
図3は同じく図1の平面図で、この図は、他の構成を図
示省略して、本発明の主要素をなすリング状止水パッキ
ング10の嵌合溝(つまり取付溝)4をより明確に示す
る図である。図4は図1の底面図を示す。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a steel shell segment according to the present invention with a curved convex surface facing upward, FIG. 2 is a plan view of FIG.
FIG. 3 is also a plan view of FIG. 1, in which other components are not shown and the fitting groove (that is, the mounting groove) 4 of the ring-shaped watertight packing 10 which is a main element of the present invention is more clearly shown. FIG. FIG. 4 shows a bottom view of FIG.
【0009】図5は図3におけるA−A断面で、図6〜
図8には鋼殻セグメントのトンネル軸方向の接合部の止
水構造が示されている。図9、図10には鋼殻セグメン
トのトンネル円周方向接合部の止水構造が示されてい
る。FIG. 5 is a sectional view taken along line AA in FIG.
FIG. 8 shows a water-stop structure at a joint portion of the steel shell segments in the tunnel axial direction. FIG. 9 and FIG. 10 show a water stopping structure at a circumferential joining portion of the steel shell segments in the tunnel.
【0010】図1〜図3及び、図3のA−A断面関連図
として示す図6〜図8において、鋼殻セグメント1はト
ンネル円周方向に延長する前後一対のH形鋼からなる円
弧状枠材(外側フランジ12と内側フランジ2)と、ト
ンネル軸方向に延長する直線状枠材(外側フランジ12
a,内側フランジ2a)とが溶接により固着されて、鋼
殻本体17が構成される。その鋼殻本体17における各
辺の外側フランジ12の外面に凹部16が設けられ、そ
の凹部16に、鋼板からなるスキンプレート11が溶接
により固着され、前記外側フランジ12,12aと内側
フランジ2,2aおよびウエブ13,13aからなる鋼
殻本体17の中にコンクリート(鉄筋の図示を省略)1
4を充填することにより鋼殻セグメント1が構成されて
いる。なお、前記鋼殻セグメント1には、裏込め用モル
タル等の裏込め材注入用の注入パイプ7が設けられてい
る。In FIGS. 1 to 3 and FIGS. 6 to 8 which are sectional views taken along the line AA in FIG. 3, the steel shell segment 1 is formed in a circular arc shape made of a pair of front and rear H-beams extending in the circumferential direction of the tunnel. A frame material (outer flange 12 and inner flange 2) and a linear frame material (outer flange 12
a, the inner flange 2a) is fixed by welding to form the steel shell main body 17. A concave portion 16 is provided on the outer surface of the outer flange 12 on each side of the steel shell main body 17, and a skin plate 11 made of a steel plate is fixed to the concave portion 16 by welding, and the outer flanges 12, 12a and the inner flanges 2, 2a are welded. Concrete (reinforcement not shown) 1 in a steel shell body 17 composed of webs 13 and 13a.
4, the steel shell segment 1 is formed. The steel shell segment 1 is provided with an injection pipe 7 for injecting a backfill material such as a backfill mortar.
【0011】鋼殻セグメント1のトンネル軸方向一端側
(図6〜図8の右側)において、トンネル軸方向にみて
前方に突出する鋼製外側フランジ12には、突出部接合
端面8と凹み部接合端面9と、この突出部接合端面8と
凹み部接合端面9の間を接続する傾斜面3が設けられ
る。さらに、傾斜面3の基端部には、その傾斜面3の延
長線上において、前記傾斜面3の断面欠損をすることな
く略半円断面のパッキング嵌合溝4が設けられる。この
パッキング嵌合溝4にリング状止水パッキング10が嵌
着されている。At one end of the steel shell segment 1 in the axial direction of the tunnel (right side in FIGS. 6 to 8), a steel outer flange 12 projecting forward as viewed in the axial direction of the tunnel has a projection-joining end face 8 and a recess-joining portion. An end surface 9 and an inclined surface 3 connecting between the protruding portion connecting end surface 8 and the concave portion connecting end surface 9 are provided. Further, a packing fitting groove 4 having a substantially semicircular cross section is provided at a base end of the inclined surface 3 on the extension of the inclined surface 3 without causing a cross-sectional defect of the inclined surface 3. A ring-shaped waterproof packing 10 is fitted into the packing fitting groove 4.
【0012】鋼殻セグメント1のトンネル軸方向他端側
(図6〜図8の左側)は、前記対向する相手側(図の右
側部分)の外側フランジ12の各部と対称配置になるよ
うに突出部接合端面8と凹み部接合端面9と、その突出
部接合端面8と凹み部接合端面9の間を接続する傾斜面
3が設けられ、さらに、傾斜面3の基端部には、前述の
場合と同様に略半円断面のパッキング嵌合溝4が設けら
れ、このパッキング嵌合溝4にリング状止水パッキング
10が嵌着されている。The other end of the steel shell segment 1 in the axial direction of the tunnel (the left side in FIGS. 6 to 8) protrudes so as to be symmetrically arranged with each part of the outer flange 12 on the opposite side (the right side in the figure). The connecting surface 8 and the connecting surface 9 of the concave portion, and the inclined surface 3 connecting between the connecting surface 8 of the projecting portion and the connecting surface 9 of the concave portion are provided. As in the case, a packing fitting groove 4 having a substantially semicircular cross section is provided, and a ring-shaped waterproof packing 10 is fitted into the packing fitting groove 4.
【0013】さらに、図6〜図8において、互いに接合
すべき鋼殻セグメント1の内側フランジ2も外側フラン
ジ12の構成と同様、左右側対称配置になるようにして
それぞれ突出部接合端面8と凹み部接合端面9と、前記
突出部接合端面8と凹み部接合端面9を接続する傾斜面
3と、傾斜面3の基端部に形成される断面が略半円形状
のパッキング嵌合溝4が前述の場合と同様に設けられ、
このパッキング嵌合溝4にリング状止水パッキング10
が嵌着されている。In FIGS. 6 to 8, the inner flange 2 of the steel shell segments 1 to be joined to each other is also symmetrically arranged on the left and right sides similarly to the configuration of the outer flange 12, so that the projecting joint end face 8 and the recess are formed. The joining surface 4 is formed by connecting the projecting joining surface 8 and the recess joining surface 9 to each other, and the packing fitting groove 4 formed at the base end of the inclined surface 3 and having a substantially semicircular cross section. Provided as in the previous case,
In this packing fitting groove 4, a ring-shaped waterproof packing 10
Is fitted.
【0014】次に、図1〜図3及び、図3のB−B断面
関連図として示す図9、図10において、鋼殻セグメン
ト1のトンネル円周方向一端側(図9〜図10の右側)
において、トンネル軸方向にみて前方に突出する鋼製外
側フランジ12aには、突出部接合端面8aと凹み部接
合端面9aと、この突出部接合端面8aと凹み部接合端
面9aの間を接続する傾斜面3aが設けられ、さらに、
傾斜面3aの基端部には略半円断面のパッキング嵌合溝
4が前述の場合と同様に設けられ、このパッキング嵌合
溝4にリング状止水パッキング10が嵌着されている。Next, in FIGS. 1 to 3 and FIGS. 9 and 10, which are sectional views taken along the line BB of FIG. 3, one end of the steel shell segment 1 in the circumferential direction of the tunnel (right side in FIGS. 9 to 10) )
In the steel outer flange 12a protruding forward as viewed in the axial direction of the tunnel, a projecting portion joining end surface 8a and a concave portion joining end surface 9a, and a slope connecting between the projecting portion joining end surface 8a and the concave portion joining end surface 9a. A surface 3a is provided, and
A packing fitting groove 4 having a substantially semicircular cross section is provided at the base end of the inclined surface 3a in the same manner as described above, and a ring-shaped waterproof packing 10 is fitted into the packing fitting groove 4.
【0015】鋼殻セグメント1のトンネル軸方向他端側
(図9〜図10の左側部分)は、前記対向する相手側
(図の右側部分)の外側フランジ12aの各部と対称配
置になるように突出部接合端面8aと凹み部接合端面9
aと、その突出部接合端面8aと凹み部接合端面9aの
間を接続する傾斜面3aが設けられ、さらに、傾斜面3
aの基端部には、略半円断面のパッキング嵌合溝4が前
述の場合と同様に設けられ、このパッキング嵌合溝4に
リング状止水パッキング10が嵌着されている。The other end of the steel shell segment 1 in the axial direction of the tunnel (the left part in FIGS. 9 and 10) is symmetrically arranged with each part of the outer flange 12a on the opposite side (the right part in the figure). Projection end face 8a and recess end face 9
a and an inclined surface 3a connecting between the projecting joint end surface 8a and the concave joint end surface 9a.
A packing fitting groove 4 having a substantially semicircular cross-section is provided at the base end portion a in the same manner as described above, and a ring-shaped waterproof packing 10 is fitted into the packing fitting groove 4.
【0016】さらに、図6〜図8において、互いに接合
すべき鋼殻セグメント1の内側フランジ2aも外側フラ
ンジ12aの構成と同様、左右側対称配置になるように
してそれぞれ突出部接合端面8aと凹み部接合端面9a
と、前記突出部接合端面8aと凹み部接合端面9aを接
続する傾斜面3aと、傾斜面3aの基端部に形成される
断面が略半円形状のパッキング嵌合溝4が設けられ、こ
のパッキング嵌合溝4にリング状止水パッキング10が
嵌着されている。Further, in FIGS. 6 to 8, the inner flange 2a of the steel shell segments 1 to be joined to each other is also symmetrically arranged on the left and right sides similarly to the configuration of the outer flange 12a. Joint end face 9a
An inclined surface 3a connecting the projecting portion joining end surface 8a and the concave portion joining end surface 9a; and a packing fitting groove 4 having a substantially semicircular cross section formed at the base end of the inclined surface 3a. A ring-shaped waterproof packing 10 is fitted in the packing fitting groove 4.
【0017】前記の鋼殻セグメント1をトンネル軸方向
に接合するには、図6に示すように、各セグメントの接
合すべき内側フランジ2と外側フランジ12をそれぞれ
の傾斜面3をガイドとして近接させる。こうして各フラ
ンジの突出部接合端面8と凹み部接合端面9とが近接ま
たは当接し、かつ各傾斜面3が近接または当接したと
き、図7に示すように、各リング状止水パッキング10
は各突出部接合端面8で押されて変形し、よって、トン
ネル軸方向に対向する一対の内側フランジ2同士の接合
部間隙及び、外側フランジ12同士の接合部間隙が水密
的に密閉され両フランジの接合部の止水性は完璧とな
る。To join the steel shell segments 1 in the axial direction of the tunnel, as shown in FIG. 6, the inner flange 2 and the outer flange 12 of each segment to be joined are brought close to each other using the respective inclined surfaces 3 as guides. . In this manner, when the protruding portion joining end face 8 and the recessed portion joining end face 9 of each flange come close to or come into contact with each other and the inclined surfaces 3 come close to or come into contact with each other, as shown in FIG.
Are deformed by being pushed by the joint end faces 8 of the respective projecting portions, so that the joint gap between the pair of inner flanges 2 facing each other in the tunnel axial direction and the joint gap between the outer flanges 12 are sealed in a watertight manner. The water stoppage of the joint is perfect.
【0018】前述のようにして接合された鋼殻セグメン
ト1のウエブ13間に形成される空間5(図7に示す)
には、モルタル等の常温硬化性材料18が充填される。
図8には、前記空間5に硬化材料18を注入するパイプ
6が示されている。A space 5 (shown in FIG. 7) formed between the webs 13 of the steel shell segments 1 joined as described above.
Is filled with a room temperature curable material 18 such as mortar.
FIG. 8 shows a pipe 6 for injecting the hardening material 18 into the space 5.
【0019】また、前記の鋼殻セグメント1をトンネル
円周方向に接合するには、前述のトンネル軸方向に接合
する場合と同様に、図10に示すように各セグメントの
接合すべき内側フランジ2aと外側フランジ12aをそ
れぞれの傾斜面3aをガイドとして近接させる。こうし
て各フランジの突出部接合端面8aと凹み部接合端面9
aとが当接し、かつ各傾斜面3aが近接または当接した
とき図10に示すように、各リング状止水パッキング1
0は各突出部接合端面8aで押されて変形し、よって、
トンネル円周方向に対向する一対の内側フランジ2a同
士の接合部間隙及び、外側フランジ12a同士の接合部
間隙が水密的に密閉され両フランジの接合部の止水性は
完璧となる。前述のようにして接合された鋼殻セグメン
ト1のウエブ13a間に形成される空間には、モルタル
等の常温硬化性材料18aが充填される。In order to join the steel shell segments 1 in the circumferential direction of the tunnel, similarly to the case of joining in the axial direction of the tunnel, as shown in FIG. And the outer flange 12a are brought close to each other using the respective inclined surfaces 3a as guides. Thus, the protruding portion connecting end surface 8a and the concave portion connecting end surface 9 of each flange are provided.
a, and when each inclined surface 3a approaches or comes into contact with each other, as shown in FIG.
0 is deformed by being pushed by each projection joint end face 8a,
The joint gap between the pair of inner flanges 2a facing each other in the circumferential direction of the tunnel and the joint gap between the outer flanges 12a are water-tightly sealed, and the waterproofness of the joint between the two flanges is perfect. The space formed between the webs 13a of the steel shell segments 1 joined as described above is filled with a cold-setting material 18a such as mortar.
【0020】前述のように、本発明の実施形態では、鋼
殻セグメント1のトンネル軸方向の接合部と、トンネル
円周方向の接合部がそれぞれ突出部接合端面8,8aと
凹み部接合端面9,9aの係合及び、凹み部接合端面
9,9aに形成のパッキン用嵌合溝4に安定に嵌合保持
されるリング状止水パッキング10を介して水密的に接
合され、この内側と外側フランジ接合部の止水構造が完
璧となる。As described above, in the embodiment of the present invention, the joint portion of the steel shell segment 1 in the tunnel axial direction and the joint portion of the steel shell segment 1 in the circumferential direction of the tunnel are formed by the projecting joint end surfaces 8 and 8a and the concave joint end surface 9 respectively. , 9a and water-tightly joined via a ring-shaped waterproof packing 10 stably fitted and held in the packing fitting groove 4 formed in the recessed joint end surfaces 9, 9a. The waterproof structure of the flange joint is perfect.
【0021】なお、リング状止水パッキング10は図6
に拡大図示のように、円形断面の本体と一体に側面に突
条22のある突出片21を一体に設けて構成し、この突
出片21を凹み部接合端面9に当てがうことで、セグメ
ント接合面の止水性はより向上する。さらに、このパッ
キング10を構成する水膨張性止水材としては、例えば
天然ゴムとウレタンとからなる特殊変成ゴム系の水膨張
性止水材、または前記水膨張性止水材の表面に、油脂酸
アミド系弱アニオン性界面活性剤からなる滑性剤を塗布
したものを使用するのがよい。また、リング状止水パッ
キング10を構成する手段としては、直線状のパッキン
グ材をパッキング嵌合溝4に沿って、接着剤により固着
して、リング状または閉ループ状に形成してもよい。The ring-shaped waterproof packing 10 is shown in FIG.
As shown in the enlarged view of the figure, a projecting piece 21 having a ridge 22 on the side face is integrally provided integrally with a body having a circular cross section, and the projecting piece 21 is applied to the recessed joint end face 9 to obtain a segment. The waterproofness of the joint surface is further improved. Further, as the water-swellable water-stopping material constituting the packing 10, for example, a specially modified rubber-based water-swellable water-stopping material made of natural rubber and urethane, or a surface of the water-swelling water-stopping material, It is preferable to use one coated with a lubricant comprising an acid amide-based weak anionic surfactant. Further, as a means for forming the ring-shaped water-stop packing 10, a linear packing material may be fixed along the packing fitting groove 4 with an adhesive to form a ring or a closed loop.
【0022】本実施形態に係る鋼殻セグメント1は、例
えば貯水トンネルや高圧ガス貯蔵トンネルの殻体として
使用することを想定しており、それ故に、鋼殻セグメン
ト1には常時大きな内側から水圧、気圧等の圧力負荷が
加わるため前述のトンネル軸方向の接合部の止水構造と
ともに、トンネル周方向の各鋼殻セグメント1間の継手
構造も強固にする必要があり、かつその結合作業も簡単
かつ確実に行なえる構造が望ましい。The steel shell segment 1 according to the present embodiment is assumed to be used, for example, as a shell of a water storage tunnel or a high-pressure gas storage tunnel. Since a pressure load such as atmospheric pressure is applied, the joint structure between the steel shell segments 1 in the circumferential direction of the tunnel needs to be strengthened together with the above-described waterproof structure at the junction in the axial direction of the tunnel, and the joining operation is simple and easy. A structure that can be performed reliably is desirable.
【0023】そこで、本実施形態の鋼殻セグメント1間
のトンネル円周方向の鋼殻セグメント1間の継手構造は
図1〜図4に示されるようになっている。まず、単体の
鋼殻セグメント1を、その円弧部が上側に凸の状態で上
方からみた斜視図で示す図1において鋼殻セグメント1
の四角形の対角線上の隅部にそれぞれ雄側の鉤状突起1
9と、雌側の係合孔20とが、それぞれ円弧中心からみ
て半径方向に2個ずつ設けられている。The joint structure between the steel shell segments 1 in the circumferential direction of the tunnel between the steel shell segments 1 according to the present embodiment is as shown in FIGS. First, a steel shell segment 1 shown in FIG. 1 is shown in a perspective view of a single steel shell segment 1 as viewed from above with its arc portion protruding upward.
Hook-shaped protrusions 1 on the male side at the diagonal corners of the square
9 and two female-side engaging holes 20 are provided in the radial direction when viewed from the center of the arc, respectively.
【0024】すなわち、鋼殻セグメント1の円周方向両
端のウエブ13aに設けた板部材20aに前述の雌側の
係合孔20が開設されている。That is, the female side engaging holes 20 are formed in the plate members 20a provided on the webs 13a at both ends in the circumferential direction of the steel shell segment 1.
【0025】さらに、鋼殻セグメント1の円周方向両端
のウエブ13には前述の雄側の鉤状突起19の基端部が
固着されていて、この鉤状突起19の先端部は、トンネ
ル軸方向のウエブ13から少し出張っている。Further, the base ends of the above-mentioned male hook-like projections 19 are fixed to the webs 13 at both ends in the circumferential direction of the steel shell segment 1, and the tip end of this hook-like projection 19 is connected to the tunnel shaft. A little business trip from web 13 in the direction.
【0026】前記セグメント間の継手構造において、ト
ンネル円周方向に接合すべき隣り合う鋼殻セグメント
1,1の側部を近づけて、トンネル軸方向に移動させる
ことにより、鉤状突起19が係合孔20に嵌り、これで
円周方向の鋼殻セグメント1,1間は強固に結合され、
内側や外側から強大な水圧、気圧等の圧力負荷が加わっ
ても、各鋼殻セグメント1間の接合部は水蜜性を保持
し、かつ圧力に十分耐えることができる。In the joint structure between the segments, the hook-shaped projections 19 are engaged by bringing the adjacent steel shell segments 1, 1 to be joined in the circumferential direction of the tunnel closer to each other and moving in the axial direction of the tunnel. It fits into the hole 20, whereby the steel shell segments 1, 1 in the circumferential direction are firmly connected,
Even if a strong water pressure or pressure such as atmospheric pressure is applied from the inside or outside, the joint between the steel shell segments 1 can maintain the nectarity and sufficiently withstand the pressure.
【0027】また、リングに組まれた鋼殻セグメント1
のトンネル軸方向の継手手段には、従来公知の任意手段
を使用してよく、例えば特開平5−256096号に開
示された雄雌の係合部材を互いに係合させてなる継手手
段を使用すればよい。図11には、前記継手手段を使用
したセグメント覆工27が示されており、25はその雄
側係合部材である。なお、図2、図3の26は雌側係合
部材である。Further, a steel shell segment 1 assembled into a ring
Any conventionally known arbitrary means may be used as the joint means in the tunnel axial direction. For example, a joint means in which male and female engaging members are engaged with each other as disclosed in Japanese Patent Application Laid-Open No. H5-256096 may be used. I just need. FIG. 11 shows a segment lining 27 using the joint means, and 25 is a male engaging member. In FIGS. 2 and 3, reference numeral 26 denotes a female engaging member.
【0028】[0028]
【発明の効果】本発明によれば、正面が円弧状で平面が
矩形であり、ウエブを介して結合された鋼製外側フラン
ジと鋼製内側フランジから構成される鋼殻セグメントに
おいて、前記外側と内側の鋼製フランジのうち、両方又
は一方のフランジの平面矩形部を対角線で2分した場合
における第1のL形2辺の側縁部と、第2のL形2辺の
側縁部のうちの一方の側縁肉厚部の内径側を段部を介し
て外径側よりも突出させて突出接合端面とすると共に、
外径側を凹み部接合端面とし、他方の側縁肉厚部の外径
側を段部を介して内径側よりも突出させて突出部接合端
面とすると共に、内径側を凹み部接合端面とし、前記第
1と第2のL形2辺の前記各凹み部接合端面に沿って4
辺にわたり止水パッキングが嵌合する嵌合溝を設けたの
で、鋼殻セグメント1におけるトンネル軸方向前後部及
び、トンネル円周方向の前後部のセグメントフランジの
突出部接合端面8,8aと凹み部接合端面9,9aとの
嵌合により、各鋼殻セグメント1を強力に連結すること
ができるのは勿論、特に本発明では、トンネル軸方向と
トンネル円周方向の鋼殻セグメント1の間において、セ
グメント内側や外側から水圧、気圧等の圧力負荷が加わ
った場合、鋼殻セグメントの平面矩形の隅角部を含む4
側辺に形成した嵌合溝4に嵌着される止水パッキングに
よってその漏出が確実に阻止される。なお、止水パッキ
ングをはリング状とするときは、平面矩形の鋼殻セグメ
ントの4辺に設けられたパッキング嵌合溝4に容易にし
かも確実に嵌着することができ、止水材装着の作業性が
向上する。According to the present invention, there is provided a steel shell segment having an arcuate front surface and a rectangular flat surface and comprising a steel outer flange and a steel inner flange connected via a web. Of the inner steel flanges, the side edges of the first L-shaped two sides and the side edges of the second L-shaped two sides when the plane rectangular portion of both or one of the flanges is bisected diagonally. While making the inside diameter side of one side edge thick part protrude from the outside diameter side through the step part, it becomes a protruding joint end face,
The outer diameter side is a concave joint end face, the outer diameter side of the other side edge thick part is protruded from the inner diameter side via a step portion to be a protruded joint end face, and the inner diameter side is a concave joint end face. 4 along the joint end faces of the recesses on the two sides of the first and second L-shapes.
Since the fitting groove into which the water-stop packing is fitted is provided along the sides, the projecting joint end faces 8, 8a of the segment flanges of the steel shell segment 1 at the front and rear portions in the tunnel axial direction and at the front and rear portions in the circumferential direction of the tunnel are recessed. The steel shell segments 1 can be strongly connected to each other by fitting with the joining end surfaces 9 and 9a. Of course, in the present invention, between the steel shell segments 1 in the tunnel axial direction and the tunnel circumferential direction, When a pressure load such as water pressure or air pressure is applied from the inside or outside of the segment, it includes the corners of the plane rectangle of the steel shell segment.
The leakage is reliably prevented by the waterproof packing fitted into the fitting groove 4 formed on the side. When the water-stop packing is formed in a ring shape, the water-stop packing can be easily and surely fitted into the packing fitting grooves 4 provided on the four sides of the flat rectangular steel shell segment. Workability is improved.
【図1】本発明のに係る鋼殻セグメントの円弧状凸部を
上にして見た斜視図である。FIG. 1 is a perspective view of a steel shell segment according to the present invention, with an arc-shaped convex portion facing upward.
【図2】図1の平面図である。FIG. 2 is a plan view of FIG.
【図3】図2をさらに省略して示す図で、鋼殻セグメン
トの4辺に形成されるリング状止水パッキング嵌合溝を
示すためのセグメントの平面図である。FIG. 3 is a plan view of the segment for showing a ring-shaped water-stop packing fitting groove formed on four sides of the steel shell segment, which is further omitted from FIG. 2;
【図4】図1の鋼殻セグメントの底面図である。FIG. 4 is a bottom view of the steel shell segment of FIG. 1;
【図5】図3のA−A線断面図である。FIG. 5 is a sectional view taken along line AA of FIG. 3;
【図6】トンネル軸方向に隣り合う鋼殻セグメント相互
を接合すべく一対の鋼殻セグメントの接合部を対向させ
た状態を示す断面図である。FIG. 6 is a cross-sectional view showing a state in which joints of a pair of steel shell segments are opposed to each other to join steel shell segments adjacent to each other in the tunnel axial direction.
【図7】図6の鋼殻セグメント同士をトンネル軸方向に
接合した状態を示す断面図である。FIG. 7 is a cross-sectional view showing a state where the steel shell segments of FIG. 6 are joined in a tunnel axial direction.
【図8】図7において、トンネル軸方向に接合した鋼殻
セグメント間の空隙にモルタルを充填した状態を示す断
面図である。FIG. 8 is a cross-sectional view showing a state in which mortar is filled in a gap between steel shell segments joined in the tunnel axial direction in FIG.
【図9】図3のB−B線断面図である。FIG. 9 is a sectional view taken along line BB of FIG. 3;
【図10】鋼殻セグメントのトンネル円周方向の接合部
断面図である。FIG. 10 is a sectional view of a joining portion of a steel shell segment in a tunnel circumferential direction.
【図11】本発明に係るセグメント覆工の斜視図であ
る。FIG. 11 is a perspective view of a segment lining according to the present invention.
【図12】従来例を示し、トンネル軸方向に相対する鋼
殻セグメントの接合部の嵌合直前の状態を示す部分断面
図である。FIG. 12 is a partial cross-sectional view showing a conventional example, and showing a state immediately before fitting of joint portions of steel shell segments facing each other in the tunnel axial direction.
【図13】図12における接合部の嵌合時の状態を示す
断面図である。13 is a cross-sectional view showing a state at the time of fitting of the joining portion in FIG.
【符号の説明】 1 鋼殻セグメント 2 内側フランジ 3 傾斜面 4 パッキング嵌合溝 5 空間 6 パイプ 7 注入パイプ 8 突出部接合端面 9 凹み部接合端面 10 リング状止水パッキング 11 スキンプレート 12 外側フランジ 13 ウエブ 14 コンクリート 15 突出片 16 凹部 17 鋼殻本体 18 常温硬化材料 19 鉤状突起 20 係合孔 21 突片 22 突条 24 支持フレーム 25 雄側係合部材 26 雌側係合部材 27 セグメント覆工 28 フランジ 29 傾斜面 30 止水材DESCRIPTION OF SYMBOLS 1 Steel shell segment 2 Inner flange 3 Inclined surface 4 Packing fitting groove 5 Space 6 Pipe 7 Injection pipe 8 Projection joint end face 9 Depression joint end face 10 Ring-shaped waterproof packing 11 Skin plate 12 Outside flange 13 Web 14 Concrete 15 Projection piece 16 Concave part 17 Steel shell main body 18 Room temperature hardening material 19 Hook-shaped projection 20 Engagement hole 21 Projection piece 22 Projection 24 Support frame 25 Male side engagement member 26 Female side engagement member 27 Segment lining 28 Flange 29 Slope 30 Waterproof material
Claims (3)
ブを介して結合された鋼製外側フランジと鋼製内側フラ
ンジから構成される鋼殻セグメントにおいて、前記外側
と内側の鋼製フランジのうち、両方又は一方のフランジ
の平面矩形部を対角線で2分した場合における第1のL
形2辺の側縁部と、第2のL形2辺の側縁部のうち、一
方の側縁肉厚部の内径側を段部を介して外径側よりも突
出させて突出接合端面とすると共に、外径側を凹み部接
合端面とし、他方の側縁肉厚部の外径側を段部を介して
内径側よりも突出させて、突出部接合端面とすると共
に、内径側を凹み部接合端面とし、前記第1と第2のL
形2辺の各凹み部接合端面に沿って平面矩形の4辺にわ
たり止水パッキングが嵌合する嵌合溝を設けた構成を特
徴とする鋼殻セグメント。1. A steel shell segment comprising a steel outer flange and a steel inner flange connected to each other by a web and having an arcuate front surface and a rectangular flat surface, wherein said outer and inner steel flanges are connected to each other. The first L in the case where the plane rectangular portion of both or one of the flanges is bisected by a diagonal line
Of the side edges of the two sides of the second L-shape and the side edges of the two sides of the second L-shape, the inner diameter side of one side edge thick portion is protruded from the outer diameter side via the step portion so as to project and join. The outer diameter side is a concave joint end face, and the outer diameter side of the other side edge thick portion is made to protrude from the inner diameter side through a step portion, and the protruding part joint end face is used, and the inner diameter side is The first and second L
A steel shell segment having a configuration in which a fitting groove into which a water-stop packing is fitted is provided along four sides of a flat rectangular shape along each joint end face of each of the two sides of the shape.
隣設する隅角部において内外径側に段差部を有して隣設
しており、前記止水パッキングは、前記段差部におい
て、内外径側に位置ずれして前記第1と第2のL形2辺
に形成され、かつ平面矩形の隅角部を含む4辺に形成さ
れる嵌合溝に嵌合するように伸長している構成を特徴と
する請求項1記載の鋼殻セグメント。2. The fitting groove is provided adjacent to the corner portion where the first and second L-shaped two sides are adjacent to each other with a stepped portion on the inner and outer diameter sides. In the stepped portion, fitting is performed in fitting grooves formed on the two sides of the first and second L-shapes and shifted on the inner and outer diameter sides and formed on four sides including corners of a flat rectangular shape. 2. The steel shell segment according to claim 1, wherein the steel shell segment is configured to extend.
側の突出部接合端面の外面及び、外径側の突出部接合端
面の内面には、各突出部が断面先細状となるように傾斜
面が形成されている請求項1又は2に記載の鋼殻セグメ
ント。3. Each of the protrusions has a tapered cross-section on the outer surface of the joint end surface on the inner diameter side and the inner surface of the joint end surface on the outer diameter side of the first and second L-shaped two sides. The steel shell segment according to claim 1 or 2, wherein the inclined surface is formed as described above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9052544A JPH10238295A (en) | 1997-02-21 | 1997-02-21 | Steel shell segment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9052544A JPH10238295A (en) | 1997-02-21 | 1997-02-21 | Steel shell segment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10238295A true JPH10238295A (en) | 1998-09-08 |
Family
ID=12917741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9052544A Pending JPH10238295A (en) | 1997-02-21 | 1997-02-21 | Steel shell segment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10238295A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000291389A (en) * | 1999-04-02 | 2000-10-17 | Nippon Steel Corp | Steel shell segment structure |
JP2013091990A (en) * | 2011-10-26 | 2013-05-16 | Kajima Corp | Steel segment and composite segment |
JP2017106304A (en) * | 2015-11-30 | 2017-06-15 | 新日鐵住金株式会社 | Segments |
JP2021063393A (en) * | 2019-10-16 | 2021-04-22 | 日本製鉄株式会社 | Composite segment |
-
1997
- 1997-02-21 JP JP9052544A patent/JPH10238295A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000291389A (en) * | 1999-04-02 | 2000-10-17 | Nippon Steel Corp | Steel shell segment structure |
JP2013091990A (en) * | 2011-10-26 | 2013-05-16 | Kajima Corp | Steel segment and composite segment |
JP2017106304A (en) * | 2015-11-30 | 2017-06-15 | 新日鐵住金株式会社 | Segments |
JP2017106306A (en) * | 2015-11-30 | 2017-06-15 | 新日鐵住金株式会社 | Segments |
JP2021063393A (en) * | 2019-10-16 | 2021-04-22 | 日本製鉄株式会社 | Composite segment |
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