JPH07305366A - Connected structure of buried tunnel - Google Patents
Connected structure of buried tunnelInfo
- Publication number
- JPH07305366A JPH07305366A JP6097540A JP9754094A JPH07305366A JP H07305366 A JPH07305366 A JP H07305366A JP 6097540 A JP6097540 A JP 6097540A JP 9754094 A JP9754094 A JP 9754094A JP H07305366 A JPH07305366 A JP H07305366A
- Authority
- JP
- Japan
- Prior art keywords
- rubber gasket
- submerged
- end surface
- connection structure
- 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
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、沈埋トンネルの接続
構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a submerged tunnel connection structure.
【０００２】[0002]
【従来の技術と発明が解決しようとする課題】海底ある
いは河底等にトンネルを作る方法として、水中で水圧を
利用して沈埋函を多数接続して、トンネルを構築する方
法が採られる。沈埋函相互間は、沈埋函の端部に取り付
けられたシール用のゴムガスケット（ジーナゴムガスケ
ット）により接続される。2. Description of the Related Art As a method for forming a tunnel on the seabed or riverbed, there is a method of constructing a tunnel by connecting a large number of submerged boxes using water pressure in water. The submerged boxes are connected to each other by a sealing rubber gasket (Gena rubber gasket) attached to an end of the submerged box.
【０００３】具体的にはまず、水底の所定位置に１つの
沈埋函を設置し、つぎにこの既設の沈埋函の前方に、新
たな沈埋函を置く。つぎにこの新たな沈埋函を、ジャッ
キ等を用いて既設の沈埋函の方向に引き寄せ、いずれか
の沈埋函の端部に取り付けたゴムガスケットを挟んで両
沈埋函を接合すると、このゴムガスケットが一次圧縮さ
れて、両沈埋函間がシールされる。ゴムガスケットは、
既設あるいは新設の沈埋函のいずれに取り付けておいて
もよい。Specifically, first, one submerged box is installed at a predetermined position on the bottom of the water, and then a new submerged box is placed in front of the existing submerged box. Next, pull this new submerged box in the direction of the existing submerged box using a jack etc., and join both submerged boxes with a rubber gasket attached to the end of one of the submerged boxes. Primary compression is applied and the space between both submerged boxes is sealed. Rubber gasket
It may be installed in either an existing or new submerged box.
【０００４】つぎに、両沈埋函に囲まれた部分の海水を
ポンプ等で排水すると、静水圧によって、新設の沈埋函
が既設の沈埋函の方向へさらに引き寄せられ、ゴムガス
ケットが二次圧縮されてシールが完了する（水圧接
合）。以上の工程を繰り返して順次沈埋函をつなげて行
けば、沈埋トンネルが完成する。Next, when the seawater surrounded by both submersible boxes is drained by a pump or the like, the new submerged box is further drawn toward the existing submerged box by the hydrostatic pressure, and the rubber gasket is secondarily compressed. Sealing is completed (hydraulic bonding). By repeating the above steps and connecting submerged boxes one after another, the submerged tunnel is completed.
【０００５】上記沈埋トンネルにおいて、ゴムガスケッ
トは、上記のように二次圧縮により大きく変形して両沈
埋函間をシールするため、たとえば水圧変化や、温度変
化によるコンクリートの乾燥、収縮、あるいは地震によ
る不等沈下等によって沈埋函間の間隔が僅かに拡がって
もシールを維持することができる。ところが、とくに軟
弱地盤等において、地震によって沈埋函間の間隔が大き
く拡がった際にはシールを維持できず、沈埋トンネル内
に水が侵入する事故が発生する危険性がある。In the above-mentioned submerged tunnel, the rubber gasket is largely deformed by the secondary compression as described above and seals between the two submerged boxes, so that concrete may be dried or contracted due to a change in water pressure or a change in temperature, or an earthquake may occur. The seal can be maintained even if the space between the submerged boxes is slightly widened due to uneven subsidence or the like. However, especially in soft ground, when the distance between the submerged boxes greatly expands due to an earthquake, the seal cannot be maintained, and there is a risk that water may enter the submerged tunnel.
【０００６】そこで、通常状態まで二次圧縮したときの
ゴムガスケットの変形量を大きくして、沈埋函間の間隔
が比較的大きく拡がってもシールを維持できるようにす
ることが考えられ、そのために、 ゴムガスケットの高さを高くして変形量をかせぐ、 ゴムの硬度を低くして変形量をかせぐ、 等の対策がとられている。Therefore, it is conceivable to increase the amount of deformation of the rubber gasket when the secondary compression is performed to the normal state so that the seal can be maintained even if the interval between the submerged boxes is relatively widened. Measures such as increasing the height of the rubber gasket to increase the amount of deformation and lowering the hardness of the rubber to increase the amount of deformation are taken.
【０００７】ところが図５に示すように、上記の対
策を施したゴムガスケット９２は、たとえば沈埋函内外
の圧力差等によって横倒れしやすく、沈埋函９１，９１
間を確実にシールできないおそれのあることが明らかに
なってきた。この原因の一つとして、ゴムガスケットの
表面や、あるいはゴムガスケットの先端部が当接され
る、対向する沈埋函の端面に藻などが付着して滑りやす
くなることがあげられる。However, as shown in FIG. 5, the rubber gasket 92 having the above countermeasures is liable to fall sideways due to, for example, the pressure difference between the inside and the outside of the submerged box, and the submerged boxes 91, 91 are laid down.
It has become clear that there is a possibility that the space cannot be reliably sealed. One of the causes for this is that algae or the like adheres to the surface of the rubber gasket or the end surface of the facing submerged box with which the tip portion of the rubber gasket is abutted, which makes it slippery.
【０００８】本発明は以上の事情に鑑みてなされたもの
であって、ゴムガスケットの横倒れ等が発生しないため
シールをより確実に維持できる沈埋トンネルの接続構造
を提供することを目的としている。The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a submerged tunnel connection structure capable of more reliably maintaining a seal because a rubber gasket does not fall sideways.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
の、この発明の沈埋トンネルの接続構造は、隣接する沈
埋函間を、一方の沈埋函の端面に取付けられたゴムガス
ケットを挟んでシールして接続する沈埋トンネルの接続
構造において、他方の沈埋函の端面の、ゴムガスケット
の先端部が当接する部分に、当該先端部を左右から挟ん
で保持する２本の凸条が設けられていることを特徴とす
る。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a submerged tunnel connection structure of the present invention seals between adjacent submerged boxes by sandwiching a rubber gasket attached to an end face of one submerged box. In the connection structure of the submerged tunnel to be connected by connecting, two convex strips for holding the tip end portion from the left and right are provided at a portion of the end face of the other submersible box where the tip end portion of the rubber gasket abuts. It is characterized by
【００１０】また、この発明の他の沈埋トンネルの接続
構造は、上記他方の沈埋函の端面の、ゴムガスケットの
先端部が当接する部分に、当該先端部を受容して保持す
る凹部が設けられていることを特徴とする。また、この
発明のさらに他の沈埋トンネルの接続構造は、上記他方
の沈埋函の端面の、ゴムガスケットの先端部が当接する
部分が、当該先端部との摩擦抵抗を大きくすべく、粗面
化されていることを特徴とする。Further, in another connection structure of the submerged tunnel according to the present invention, a concave portion for receiving and holding the tip portion is provided at a portion of the end surface of the other submerged box where the tip portion of the rubber gasket abuts. It is characterized by Further, in still another submerged tunnel connection structure of the present invention, a portion of the end face of the other submerged casing, which is in contact with the tip of the rubber gasket, has a roughened surface in order to increase frictional resistance with the tip. It is characterized by being.
【００１１】[0011]
【作用】上記構成からなる、この発明の沈埋トンネルの
接続構造によれば、一方の沈埋函の端面に取付けられた
ゴムガスケットの先端部が、他方の沈埋函の端面に設け
られた２本の凸条によって左右から挟まれて保持される
ため、たとえばゴムガスケットの変形量を大きくして
も、その横倒れを確実に防止でき、シールをより確実に
維持することが可能となる。According to the submerged tunnel connection structure of the present invention having the above structure, the tip of the rubber gasket attached to the end face of one of the submerged boxes is provided with the two end faces of the other submerged box. Since the ridges are sandwiched and held from the left and right, even if the amount of deformation of the rubber gasket is increased, for example, it is possible to reliably prevent the rubber gasket from falling sideways and more reliably maintain the seal.
【００１２】またこの発明の他の沈埋トンネルの接続構
造によれば、上記ゴムガスケットの先端部が、他方の沈
埋函の端面に設けられた凹部によって受容されて保持さ
れるため、やはり、その横倒れを確実に防止でき、シー
ルをより確実に維持することが可能となる。そしてこの
発明のさらに他の沈埋トンネルの接続構造においては、
上記ゴムガスケットの先端部が当接される、他方の沈埋
函の端面が粗面化されて、先端部との摩擦抵抗が大きく
なっているため、その横倒れを確実に防止でき、シール
をより確実に維持することが可能となる。According to another submerged tunnel connection structure of the present invention, the tip of the rubber gasket is received and held by the recess provided in the end face of the other submerged box. It is possible to prevent the fall surely and maintain the seal more reliably. And in still another submerged tunnel connection structure of the present invention,
The tip end of the rubber gasket is abutted, the end face of the other submerged box is roughened, and the frictional resistance with the tip end is increased, so it is possible to reliably prevent its sideways falling and to improve the sealing. It is possible to reliably maintain it.
【００１３】[0013]
【実施例】以下にこの発明の沈埋トンネルの接続構造
を、その一実施例を示す図面を参照しつつ説明する。ま
ず図１(a) の実施例について説明する。同図にみるよう
に、それぞれの端面１０，１０を相対向させて隣接配置
された両沈埋函１，１のうち一方の沈埋函１の端面１０
には、ゴムガスケット２が取り付けられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS A buried tunnel connection structure of the present invention will be described below with reference to the drawings showing an embodiment thereof. First, the embodiment shown in FIG. 1A will be described. As shown in the figure, one end face 10 of one of the submerged boxes 1 and 1 arranged adjacent to each other with the respective end faces 10 and 10 facing each other.
A rubber gasket 2 is attached to the.
【００１４】ゴムガスケット２は、図２にも示すよう
に、沈埋函１への固定部２０と、断面台形状の主体部２
１とを、ゴム材料により一体形成することで構成されて
いる。また、上記ゴムガスケット２の先端部２２が当接
される、他方の沈埋函１の端面１０には、当該先端部２
２を左右から挟んで保持する２本の、断面円形の凸条
３，３が、端面１０の長手方向に沿って設けられてい
る。As shown in FIG. 2, the rubber gasket 2 includes a fixing portion 20 to the submerged box 1 and a main body portion 2 having a trapezoidal cross section.
1 and 1 are integrally formed of a rubber material. Further, the tip portion 2 of the other submerged box 1 on which the tip portion 22 of the rubber gasket 2 is abutted is attached.
Two ridges 3 and 3 having a circular cross section are provided along the longitudinal direction of the end face 10 to hold the two from both sides.
【００１５】各凸条３は、図１(b) にも示すように、丸
鋼材を、沈埋函１の端面１０に、スポット溶接等によっ
て固定することで形成されている。図１(a)(b)中の符号
３１は、そのスポット溶接部を示している。上記各部か
らなる、この実施例の沈埋トンネルの接続構造によれ
ば、ゴムガスケット２の先端部２２が、２本の凸条３，
３によって左右から挟まれて保持されるため、図５に示
すような横倒れを確実に防止できる。したがって、ゴム
ガスケット２の高さを高くしたり、あるいはゴムの硬度
を低くしたりして変形量を大きくしても、その横倒れを
確実に防止でき、シールをより確実に維持することが可
能となる。As shown in FIG. 1 (b), each ridge 3 is formed by fixing a round steel material to the end face 10 of the submerged box 1 by spot welding or the like. Reference numeral 31 in FIGS. 1 (a) and 1 (b) indicates the spot welded portion. According to the submerged tunnel connection structure of this embodiment, which is made up of the above-described parts, the tip portion 22 of the rubber gasket 2 has two ridges 3, 3.
Since it is sandwiched and held from the left and right by 3, it is possible to reliably prevent the sideways falling as shown in FIG. Therefore, even if the height of the rubber gasket 2 is increased or the hardness of the rubber is decreased to increase the amount of deformation, the lateral collapse thereof can be reliably prevented, and the seal can be more reliably maintained. Becomes
【００１６】なお上記凸条３としては、丸鋼材からなる
断面円形のもの以外にも、たとえば断面矩形状等の種々
の断面形状のものが採用できる。たとえば断面矩形状の
凸条を形成するには、沈埋函１の端面１０に、鋼製等の
角材を固定すればよい。また凸条は、沈埋函１の端面１
０を構成するＩ型鋼等の枠材の表面に、一体的に形成し
てもよい。The ridge 3 may have various sectional shapes such as a rectangular sectional shape other than the circular sectional shape made of a round steel material. For example, in order to form a ridge having a rectangular cross section, a square bar made of steel or the like may be fixed to the end surface 10 of the submerged box 1. The ridges are the end faces 1 of the submerged box 1.
It may be integrally formed on the surface of a frame material such as I-type steel that constitutes 0.
【００１７】つぎに、図３(a) の実施例について説明す
る。同図にみるように、両沈埋函１，１のうち一方の沈
埋函１の端面１０には、先の図１(a) の実施例と同形状
のゴムガスケット２が取り付けられている。一方、上記
ゴムガスケット２の先端部２２が当接される、他方の沈
埋函１の端面１０には、当該先端部２２を受容して保持
する凹部１０ａが設けられている。Next, the embodiment shown in FIG. 3A will be described. As shown in the figure, a rubber gasket 2 having the same shape as that of the embodiment shown in FIG. 1A is attached to the end surface 10 of one of the submerged boxes 1 and 1. On the other hand, the end surface 10 of the other submerged box 1 with which the tip portion 22 of the rubber gasket 2 is abutted is provided with a recess 10a for receiving and holding the tip portion 22.
【００１８】凹部１０ａは、同図(b) にも示すように、
沈埋函１の端面１０の長手方向に沿って形成されてい
る。上記各部からなる、この実施例の沈埋トンネルの接
続構造によれば、ゴムガスケット２の先端部２２が、凹
部１０ａによって受容されて保持されるため、やはり、
その横倒れを確実に防止でき、シールをより確実に維持
することができる。The recess 10a is, as shown in FIG.
It is formed along the longitudinal direction of the end surface 10 of the submerged box 1. According to the buried tunnel connection structure of this embodiment, which is made up of the above-mentioned parts, the tip 22 of the rubber gasket 2 is received and held by the recess 10a, so that
The sideways fall can be surely prevented, and the seal can be more surely maintained.
【００１９】つぎに、図４(a) の実施例について説明す
る。同図にみるように、両沈埋函１，１のうち一方の沈
埋函１の端面１０には、先の図１(a) の実施例と同形状
のゴムガスケット２が取り付けられている。一方、上記
ゴムガスケット２の先端部２２が当接される、他方の沈
埋函１の端面１０は、当該先端部２２との摩擦抵抗を大
きくすべく、粗面化されている。Next, the embodiment shown in FIG. 4A will be described. As shown in the figure, a rubber gasket 2 having the same shape as that of the embodiment shown in FIG. 1A is attached to the end surface 10 of one of the submerged boxes 1 and 1. On the other hand, the end surface 10 of the other submerged box 1 with which the tip portion 22 of the rubber gasket 2 is abutted is roughened so as to increase the frictional resistance with the tip portion 22.
【００２０】沈埋函１の端面１０を粗面化する方法は種
々考えられるが、実施例の場合は、同図(b) にも示すよ
うに、適当な樹脂バインダー中に硬質の微小粒子を分散
させた粗面化層４が塗布、形成されることで、当該端面
１０が粗面化されている。粗面化層４を構成する樹脂バ
インダーとしては、水や海水等に強く、かつ沈埋函１の
端面１０や微小粒子との接着性にすぐれたものが望まし
い。好適な樹脂バインダーの例としては硬化性樹脂、と
くにエポキシ樹脂があげられる。Although various methods of roughening the end surface 10 of the submerged box 1 are conceivable, in the case of the embodiment, hard fine particles are dispersed in a suitable resin binder as shown in FIG. The end surface 10 is roughened by applying and forming the roughened layer 4 thus formed. As the resin binder forming the roughened layer 4, a resin binder that is strong against water, seawater and the like and has excellent adhesiveness to the end surface 10 of the submerged box 1 and fine particles is desirable. Examples of suitable resin binders include curable resins, especially epoxy resins.
【００２１】また上記樹脂バインダー中に分散される硬
質の微小粒子としては、沈埋函接合時の圧縮力に耐え得
るものが望ましい。微小粒子の粒径はとくに限定されな
いが、２８〜２００メッシュ程度が好ましい。微小粒子
の粒径が上記範囲未満では粗面化が不十分で、ゴムガス
ケット２の先端部２２に対する十分な摩擦抵抗が得られ
ない。逆に微小粒子の粒径が上記範囲を超えた場合に
は、当接したゴムガスケット２を損傷するおそれがあ
る。The hard fine particles dispersed in the resin binder are preferably those capable of withstanding the compressive force at the time of submerged box bonding. The particle size of the fine particles is not particularly limited, but is preferably about 28 to 200 mesh. If the particle size of the fine particles is less than the above range, roughening is insufficient and sufficient frictional resistance with respect to the tip 22 of the rubber gasket 2 cannot be obtained. On the other hand, if the particle size of the fine particles exceeds the above range, the contacted rubber gasket 2 may be damaged.
【００２２】以上の点に鑑みると、この発明に好適な硬
質の微小粒子としては、たとえば硅砂７号等があげられ
る。樹脂バインダーと微小粒子の配合割合はとくに限定
されないが、樹脂バインダーとして未硬化のエポキシ樹
脂を用い、微小粒子として硅砂７号を用いる場合は、エ
ポキシ樹脂１００重量部に対して硅砂７号を３０〜２０
０重量部程度配合するのが好ましい。硅砂７号の割合が
上記範囲未満では、沈埋函１の端面１０の粗面化が不十
分となるおそれがある。逆に硅砂７号の割合が上記範囲
を超えた場合には、相対的に樹脂バインダーとしてのエ
ポキシ樹脂が不足して接着力が低下し、硅砂７号が沈埋
函１の端面１０から剥落しやすくなって、当該端面１０
の摩擦抵抗が早期に失われてしまうおそれがある。In view of the above points, examples of hard fine particles suitable for the present invention include silica sand No. 7 and the like. The mixing ratio of the resin binder and the fine particles is not particularly limited, but when uncured epoxy resin is used as the resin binder and silica sand 7 is used as the fine particles, silica sand 7 to 30 parts by weight per 100 parts by weight of the epoxy resin is used. 20
It is preferable to add about 0 parts by weight. If the ratio of silica sand No. 7 is less than the above range, roughening of the end surface 10 of the submerged box 1 may be insufficient. On the other hand, when the ratio of silica sand No. 7 exceeds the above range, the epoxy resin as a resin binder is relatively insufficient and the adhesive strength is reduced, and silica sand No. 7 easily peels off from the end face 10 of the submerged box 1. Therefore, the end face 10
There is a risk that the frictional resistance of will be lost early.
【００２３】上記各部からなる、この実施例の沈埋トン
ネルの接続構造によれば、ゴムガスケット２の先端部２
２が当接される、他方の沈埋函１の端面１０が、粗面化
層４によって粗面化されて、先端部２２との摩擦抵抗が
大きくなっているため、その横倒れを確実に防止でき、
シールをより確実に維持することが可能となる。なお、
沈埋函１の端面１０を粗面化する方法としては、上記粗
面化層４以外にも、従来公知の種々の粗面化方法を採用
することができる。たとえば端面１０を構成するＩ型鋼
等の枠材の表面を、エッチング処理やサンドブラスト処
理等によって、直接に粗面化することも可能である。 〈試験例〉全体の寸法が実際の１／２であるゴムガスケ
ットおよび沈埋函の端面のモデルを作製した。すなわち
ゴムガスケット２のモデルとしては、図２に示すように
取付け部２０の厚みｔが９mm、胴部２１の先端部２２側
の幅Ｗ1 が６０mm、基端側の幅Ｗ2 が１１０mm、全体の
高さｈが１４０mmで、かつ長さが５００mmの天然ゴム製
のものを用意した。また沈埋函の端面のモデルとして
は、下記の４種を用意した。 図１(a)(b)に示す２本の凸条３，３を有するものと
して、鋼材の表面（端面１０に相当）に、直径１６mmφ
の丸鋼材２本を、その中心間隔Ｗ3 が１３０mmとなるよ
うにスポット溶接したもの。 図３(a)(b)に示す凹部１０ａを有するものとして、
鋼材の表面（端面１０に相当）に、深さｄが３０mmでか
つ幅Ｗ4 が２００mmの凹部を形成したもの。 図４(a)(b)に示す端面が粗面化処理されたものとし
て、鋼材の表面（端面１０に相当）に、未硬化のエポキ
シ樹脂と硅砂７号とを重量比で１００：５０の割合で混
合したものを厚み０．５mmに塗布し、エポキシ樹脂を硬
化させて粗面化層４を形成したもの。 従来の例として、未処理の鋼材。According to the connection structure of the submerged tunnel of this embodiment, which is composed of the above-mentioned parts, the tip portion 2 of the rubber gasket 2 is formed.
Since the end surface 10 of the other submerged box 1 with which 2 is abutted is roughened by the roughening layer 4 and the frictional resistance with the tip portion 22 is increased, it is surely prevented from falling sideways. You can
It becomes possible to maintain the seal more reliably. In addition,
As a method of roughening the end surface 10 of the submerged box 1, various conventionally known roughening methods can be adopted in addition to the roughening layer 4. For example, it is possible to directly roughen the surface of the frame material such as I-type steel that constitutes the end surface 10 by etching or sandblasting. <Test Example> A model of the end face of the rubber gasket and the submerged box whose overall size is 1/2 of the actual size was prepared. That is, as a model of the rubber gasket 2, as shown in FIG. 2, the thickness t of the mounting portion 20 is 9 mm, the width W 1 of the body portion 21 on the tip 22 side is 60 mm, and the width W 2 of the base end is 110 mm. A height h of 140 mm and a length of 500 mm made of natural rubber were prepared. The following four types were prepared as models of the end face of the submerged box. As shown in FIGS. 1 (a) and 1 (b), the two ridges 3 and 3 have a diameter of 16 mm on the surface of the steel material (corresponding to the end surface 10).
Spot-welded two round steel products with a center distance W 3 of 130 mm. Assuming that the recess 10a shown in FIGS. 3 (a) and 3 (b) is provided,
The surface of the steel material (corresponding to the end face 10) is formed with a recess having a depth d of 30 mm and a width W 4 of 200 mm. Assuming that the end faces shown in FIGS. 4 (a) and 4 (b) are roughened, the uncured epoxy resin and silica sand No. 7 are mixed in a weight ratio of 100: 50 on the surface of the steel material (corresponding to the end face 10). A material in which the roughened layer 4 is formed by applying a mixture of the components in a thickness of 0.5 mm and curing the epoxy resin. As a conventional example, untreated steel.
【００２４】上記ゴムガスケット２のモデルを、プレス
機の一対のプレス盤の片方に固定し、他方には、上記
〜のいずれかの鋼材を固定するとともに、藻や海草等
が付着している状態を再現するため、それぞれの表面に
シリコーングリースを塗布した。そして、プレス機を圧
縮速度１０mm／分で作動させて、ゴムガスケット２のモ
デルの高さｈが８０mmになるまで圧縮させた際の、ゴム
ガスケット２のモデルの横倒れの有無を観察した。A state in which the model of the rubber gasket 2 is fixed to one of a pair of press plates of the press machine, and the steel material of any one of the above items 1 to 3 is fixed to the other, and algae, seaweed, etc. are attached. In order to reproduce the above, silicone grease was applied to each surface. Then, the press machine was operated at a compression speed of 10 mm / min, and when the model of the rubber gasket 2 was compressed to a height h of 80 mm, the model of the rubber gasket 2 was observed for the presence or absence of lateral collapse.
【００２５】以上の試験を、上記〜の各鋼材につい
て、それぞれゴムガスケット２のモデルを交換して３回
ずつ行ったところ、の従来の構造の場合は、３回中２
回、ゴムガスケット２の横倒れが発生したが、〜
の、この発明の構成の場合は、横倒れは１回も発生しな
かった。The above tests were carried out three times for each of the above steel materials by exchanging the model of the rubber gasket 2, and in the case of the conventional structure, the test was carried out twice in three times.
The rubber gasket 2 collapsed sideways, but ~
However, in the case of the configuration of the present invention, the sideways fall never occurred.
【００２６】[0026]
【発明の効果】以上、詳述したようにこの発明の沈埋ト
ンネルの接続構造によれば、一方の沈埋函の端面に取付
けられたゴムガスケットの先端部が、他方の沈埋函の端
面に設けられた２本の凸条によって左右から挟まれて保
持されることで、その横倒れが確実に防止される。As described above in detail, according to the submerged tunnel connection structure of the present invention, the tip end of the rubber gasket attached to the end face of one of the submerged boxes is provided on the end face of the other submerged box. By being held by being sandwiched from the left and right by the two ridges, the sideways fall is reliably prevented.
【００２７】またこの発明の他の沈埋トンネルの接続構
造によれば、上記ゴムガスケットの先端部が、他方の沈
埋函の端面に設けられた凹部によって受容されて保持さ
れることで、その横倒れが確実に防止される。さらにこ
の発明の他の沈埋トンネルの接続構造によれば、上記ゴ
ムガスケットの先端部が当接される、他方の沈埋函の端
面が粗面化されて、先端部との摩擦抵抗が大きくなって
いることで、その横倒れが確実に防止される。Further, according to another submerged tunnel connection structure of the present invention, the tip end portion of the rubber gasket is received and held by the concave portion provided on the end face of the other submerged box, so that the tip end portion of the rubber gasket falls sideways. Is reliably prevented. Further, according to another submerged tunnel connection structure of the present invention, the tip end portion of the rubber gasket is abutted, and the end surface of the other submerged box is roughened to increase the frictional resistance with the tip portion. By staying, the sideways fall is surely prevented.
【００２８】したがってこの発明によれば、たとえゴム
ガスケットの変形量を大きくしても、シールをより確実
に維持できるため、たとえば軟弱地盤等に沈埋トンネル
を設置した際に、地震によって沈埋函が大きく移動して
も、沈埋トンネル内に水が侵入する事故をより確実に防
止でき、沈埋トンネル工法の安全性を向上できるという
特有の作用効果を奏する。Therefore, according to the present invention, even if the deformation amount of the rubber gasket is increased, the seal can be maintained more reliably. Therefore, for example, when the submerged tunnel is installed on the soft ground, the submerged box becomes large due to an earthquake. Even if it moves, it is possible to more reliably prevent water from entering the submerged tunnel and to improve the safety of the submerged tunnel method.
【図１】同図(a) は、この発明の沈埋トンネルの接続構
造の一実施例を示す横断平面図、同図(b) は上記実施例
の接続構造を構成する、２本の凸条が設けられた沈埋函
の端面を示す斜視図である。FIG. 1 (a) is a cross-sectional plan view showing an embodiment of a connection structure for a submerged tunnel according to the present invention, and FIG. 1 (b) is a plan view showing two connecting projections constituting the connection structure of the above embodiment. It is a perspective view showing an end face of a submerged box provided with.
【図２】図１の実施例において使用されるゴムガスケッ
トの部分切り欠き斜視図である。2 is a partially cutaway perspective view of a rubber gasket used in the embodiment of FIG. 1. FIG.
【図３】同図(a) はこの発明の他の沈埋トンネルの接続
構造の一実施例を示す横断平面図、同図(b) は上記実施
例の接続構造を構成する、凹部が設けられた沈埋函の端
面を示す斜視図である。FIG. 3 (a) is a cross-sectional plan view showing another embodiment of the connection structure for another submerged tunnel according to the present invention, and FIG. 3 (b) is a cross-sectional view of the connection structure of the above embodiment, in which recesses are provided. It is a perspective view which shows the end surface of the submerged box.
【図４】同図(a) はこの発明のさらに他の沈埋トンネル
の接続構造の一実施例を示す横断平面図、同図(b) は上
記実施例の接続構造を構成する、粗面化された沈埋函の
端面を示す斜視図である。FIG. 4 (a) is a cross-sectional plan view showing an embodiment of the connection structure of still another submerged tunnel of the present invention, and FIG. 4 (b) is a roughened surface constituting the connection structure of the above embodiment. It is a perspective view which shows the end surface of the submerged box.
【図５】従来の沈埋トンネルの接続構造において、ゴム
ガスケットが横倒れした状態を示す横断平面図である。FIG. 5 is a cross-sectional plan view showing a state in which a rubber gasket has fallen sideways in the conventional buried tunnel connection structure.
１ 沈埋函 １０ 端面 １０ａ 凹部 ２ ゴムガスケット ２２ 先端部 ３ 凸条 ４ 粗面化層 1 Submerged Box 10 End Face 10a Recess 2 Rubber Gasket 22 Tip 3 Convex Line 4 Roughening Layer
Claims (3)
に取付けられたゴムガスケットを挟んでシールして接続
する沈埋トンネルの接続構造において、他方の沈埋函の
端面の、ゴムガスケットの先端部が当接する部分に、当
該先端部を左右から挟んで保持する２本の凸条が設けら
れていることを特徴とする沈埋トンネルの接続構造。1. A connection structure for an immersion tunnel in which adjacent submerged boxes are connected by sandwiching and sealing a rubber gasket attached to the end surface of one of the submerged boxes. A connection structure for a submerged tunnel, characterized in that two convex strips for holding the tip portion from the left and right sides are provided at a portion where the tip portion abuts.
に取付けられたゴムガスケットを挟んでシールして接続
する沈埋トンネルの接続構造において、他方の沈埋函の
端面の、ゴムガスケットの先端部が当接する部分に、当
該先端部を受容して保持する凹部が設けられていること
を特徴とする沈埋トンネルの接続構造。2. A connection structure for an immersion tunnel in which adjacent submerged boxes are connected by sandwiching and sealing a rubber gasket attached to the end surface of one of the submerged boxes. A connection structure for a submerged tunnel, characterized in that a concave portion for receiving and holding the tip portion is provided at a portion where the tip portion abuts.
に取付けられたゴムガスケットを挟んでシールして接続
する沈埋トンネルの接続構造において、他方の沈埋函の
端面の、ゴムガスケットの先端部が当接する部分が、当
該先端部との摩擦抵抗を大きくすべく、粗面化されてい
ることを特徴とする沈埋トンネルの接続構造。3. In a connection structure of a submerged tunnel in which adjacent submerged boxes are sealed and connected by sandwiching a rubber gasket attached to an end surface of one submerged box, a rubber gasket of an end surface of the other submerged box is connected. A connection structure for a submerged tunnel, wherein a portion where the tip portion abuts is roughened so as to increase frictional resistance with the tip portion.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6097540A JP2911745B2 (en) | 1994-05-11 | 1994-05-11 | Connection structure of submerged tunnel |
| JP10353347A JPH11236714A (en) | 1994-05-11 | 1998-12-11 | Connecting structure of immersed tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6097540A JP2911745B2 (en) | 1994-05-11 | 1994-05-11 | Connection structure of submerged tunnel |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10353347A Division JPH11236714A (en) | 1994-05-11 | 1998-12-11 | Connecting structure of immersed tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07305366A true JPH07305366A (en) | 1995-11-21 |
| JP2911745B2 JP2911745B2 (en) | 1999-06-23 |
Family
ID=14195082
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6097540A Expired - Fee Related JP2911745B2 (en) | 1994-05-11 | 1994-05-11 | Connection structure of submerged tunnel |
| JP10353347A Pending JPH11236714A (en) | 1994-05-11 | 1998-12-11 | Connecting structure of immersed tunnel |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10353347A Pending JPH11236714A (en) | 1994-05-11 | 1998-12-11 | Connecting structure of immersed tunnel |
Country Status (1)
| Country | Link |
|---|---|
| JP (2) | JP2911745B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190777A (en) * | 2017-06-30 | 2017-09-22 | 中交航局第二工程有限公司 | Immersed tube tunnel final joint docking system and docking calculation |
| CN107620321A (en) * | 2017-08-30 | 2018-01-23 | 中交公路规划设计院有限公司 | A kind of sandwich immersed tube joint and its production method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526776B (en) * | 2013-10-15 | 2016-01-20 | 株洲时代新材料科技股份有限公司 | Towards immersed tube tunnel rubber fastening band hardness layered approach and rubber fastening band thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4822084U (en) * | 1971-07-23 | 1973-03-13 | ||
| JPS52107431U (en) * | 1976-02-13 | 1977-08-16 |
-
1994
- 1994-05-11 JP JP6097540A patent/JP2911745B2/en not_active Expired - Fee Related
-
1998
- 1998-12-11 JP JP10353347A patent/JPH11236714A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4822084U (en) * | 1971-07-23 | 1973-03-13 | ||
| JPS52107431U (en) * | 1976-02-13 | 1977-08-16 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190777A (en) * | 2017-06-30 | 2017-09-22 | 中交航局第二工程有限公司 | Immersed tube tunnel final joint docking system and docking calculation |
| CN107190777B (en) * | 2017-06-30 | 2020-04-24 | 中交一航局第二工程有限公司 | Butt joint system and butt joint method for final joint of immersed tunnel |
| CN107620321A (en) * | 2017-08-30 | 2018-01-23 | 中交公路规划设计院有限公司 | A kind of sandwich immersed tube joint and its production method |
| CN107620321B (en) * | 2017-08-30 | 2020-08-25 | 中交公路规划设计院有限公司 | Production method of sandwich immersed tube joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2911745B2 (en) | 1999-06-23 |
| JPH11236714A (en) | 1999-08-31 |
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