JP2614182B2 - Seal member for buried tunnel - Google Patents
Seal member for buried tunnelInfo
- Publication number
- JP2614182B2 JP2614182B2 JP5294076A JP29407693A JP2614182B2 JP 2614182 B2 JP2614182 B2 JP 2614182B2 JP 5294076 A JP5294076 A JP 5294076A JP 29407693 A JP29407693 A JP 29407693A JP 2614182 B2 JP2614182 B2 JP 2614182B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- box
- buried
- rubber
- receiving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、沈埋トンネル工法にお
ける各沈埋函の接合部間に介装され、トンネル内の気密
を保持する沈埋トンネル用シール部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal member for a buried tunnel which is interposed between joints of each buried box in a buried tunnel construction method and maintains airtightness in the tunnel.
【０００２】[0002]
【従来の技術】海底トンネル等水面下にトンネルを施工
する工法の一つである沈埋トンネル工法では、予め陸上
で所定長さの沈埋函を形成し、それを順次所定位置に沈
降させた後接合する。2. Description of the Related Art In a submerged tunnel construction method, which is one of the methods for constructing a tunnel below the water surface, such as a submarine tunnel, a submerged box having a predetermined length is formed in advance on land, and the submerged box is sequentially settled at a predetermined position and then joined. I do.
【０００３】このような沈埋トンネル工法における各沈
埋函の間には、トンネル内の気密を保持するために図８
にその一例の断面図を示すようなシール部材が介装され
る。図示シール部材は弾性パッキンの一例である通称ジ
ナ型パッキンとよばれるもので、所定高さの台形状の本
体３０の底辺部の両側に所定厚さの板状の締着部３１が
突設された断面形状として、所定硬度のゴムによって形
成されている。そして、締着部３１を貫通する取付けボ
ルトによって沈埋函の結合端面に締着され、沈埋函の開
口縁に沿って全周に連続して配設される。[0003] In order to maintain the airtightness of the tunnel between the submerged boxes in such a submerged tunnel construction method, FIG.
A seal member as shown in a cross-sectional view of one example is interposed. The illustrated seal member is a so-called zina type packing, which is an example of an elastic packing. A plate-shaped fastening portion 31 having a predetermined thickness is protruded on both sides of a bottom side of a trapezoidal main body 30 having a predetermined height. Is formed of rubber having a predetermined hardness. Then, it is fastened to the joint end face of the immersion box by a mounting bolt penetrating the fastening portion 31, and is continuously arranged on the entire circumference along the opening edge of the immersion box.
【０００４】沈埋函の施工の際には、パッキンが装着さ
れた沈埋函の端縁と装着されない沈埋函の端縁とを対応
させた状態で沈埋函同士を水圧によって圧接することに
より、パッキンは圧縮されて所定量弾性変形した状態で
両沈埋函の端面の間に介装された状態となり、内部の気
密を保持するように作用する。地震や地盤の変動によっ
て接合された沈埋函同士が相対移動（変位）した際に
は、パッキンが沈埋函の移動に追従してそれ以上に弾性
変形したり弾性復帰したりして気密状態を維持する。つ
まり、沈埋函の相対移動をシール部材がその変形によっ
て吸収して気密状態を維持するものである。[0004] At the time of construction of the buried box, the packing is mounted by pressing the buried boxes by water pressure in a state where the edge of the buried box with the packing and the edge of the buried box not mounted are matched. In a state of being compressed and elastically deformed by a predetermined amount, it is interposed between the end faces of both buried boxes, and acts to maintain the airtightness inside. When the buried boxes that have been joined move relative to each other (displacement) due to an earthquake or ground deformation, the packing follows the movement of the buried boxes and undergoes further elastic deformation or elastic recovery to maintain an airtight state. I do. That is, the relative movement of the immersion box is absorbed by the seal member by its deformation, and the airtight state is maintained.
【０００５】[0005]
【発明が解決しようとする課題】ところで、近時、建造
物における耐震性の向上が望まれ、沈埋トンネルにおい
てもより大きな沈埋函の変位を許容し得る構造が要求さ
れるようになってきている。しかしながら上記ジナ型パ
ッキンのようにゴムにより一体に形成されてその弾性変
形によって沈埋函の変位を吸収するものでは、図９にジ
ナ型パッキンにおける変形量と反力の関係のグラフを示
すように、その変形量と反力は略比例するため、沈埋函
の変位許容量を大きくするためには、沈埋函接合施工時
における圧縮量を大きくして最小止水反力を生ずる変形
量との差を大きく採る必要が有り、そのためには厚さや
体積をより大きなものとしなければならない。In recent years, it has been desired to improve seismic resistance of a building, and a structure capable of permitting a larger displacement of a submerged box is required even in a submerged tunnel. . However, in the case of the above-mentioned Gina-type packing, which is integrally formed of rubber and absorbs the displacement of the submerged box by its elastic deformation, as shown in FIG. 9, a graph of the relationship between the amount of deformation and the reaction force in the Gina-type packing, Since the amount of deformation and the reaction force are approximately proportional, in order to increase the allowable displacement of the buried box, the difference between the amount of deformation and the amount of deformation that produces the minimum water stop reaction force during the submerged box joining process is increased. It needs to be large, for which the thickness and volume must be made larger.
【０００６】ところが、このように厚さや体積を大きく
して沈埋函接合施工時の圧縮量を大きく設定すると、当
該沈埋函接合施工時における形状率（受圧面積を自由面
積で割った値で表される）が大きくなって作用する剪断
応力も大きくなり、沈埋函が近接する方向に変位すると
これが更に増大するために、製造時の欠陥の影響がでや
すいという問題がある。又、断面積が大きくなる（厚く
なる）ことから、被圧縮時の安定性が悪い、製造時にお
いて加硫時の熱が均等に伝わり難くこれによって欠陥を
生じ易い、大きく重くなることから取付け作業が大がか
りとなる、といった問題もある。更に、上面に断面形状
三角形の軟質ゴムによるシールノーズ３２が突設されて
いるが、一般にゴムは非圧縮性であるために過度に圧縮
された状態ではこのシールノーズ３２が本体内にめり込
んで集中応力を生じさせ、これによって本体部が断裂す
るといった畏れも有するものである。However, when the thickness and volume are increased and the amount of compression at the time of submerged box joining is set to a large value, the shape ratio at the time of submerged box joining (expressed as a value obtained by dividing the pressure receiving area by the free area). ) Increases and the acting shear stress also increases, which further increases when the submerged box is displaced in the approaching direction, so that there is a problem that the influence of defects during manufacturing is likely to occur. In addition, since the cross-sectional area becomes large (thick), stability during compression is poor, heat during vulcanization is difficult to be evenly transmitted during manufacturing, and defects are easily caused by this. However, there is also a problem that it becomes large. Further, a seal nose 32 made of soft rubber having a triangular cross section is projected from the upper surface. However, since the rubber is generally incompressible, when the rubber is excessively compressed, the seal nose 32 sinks into the main body and concentrates. There is a fear that a stress may be generated, and the main body may be torn.
【０００７】尚、内部剪断応力の増大は鉄板等を厚さ方
向（圧縮方向）に層状にインサートして強化することで
防ぐことができるが、その場合、変形量と反力の関係の
グラフを図１０に示すごとく比例定数が大きくなり、止
水に必要な反力を得るための変形量が少なく、従って、
特に沈埋函の離間する方向における変位許容範囲は極め
て狭いものとなってしまうものである。[0007] An increase in internal shear stress can be prevented by inserting a steel plate or the like in a layered manner in the thickness direction (compression direction) and strengthening it. In this case, a graph showing the relationship between the amount of deformation and the reaction force is obtained. As shown in FIG. 10, the proportionality constant increases, and the amount of deformation required to obtain the reaction force required for water stoppage is small.
In particular, the allowable range of displacement of the submerged box in the separating direction is extremely narrow.
【０００８】本発明は、上記問題に鑑みてなされたもの
であって、断面積を大きくすることなく沈埋函の大きな
変位を許容し得ると共に、被圧縮時の安定性が良く、成
形も容易でしかも取付け作業が大がかりとなることもな
い沈埋トンネル用シール部材を提供しようとするもので
ある。The present invention has been made in view of the above problems, and allows a large displacement of a submerged box without increasing the cross-sectional area, has good stability during compression, and is easy to form. Further, it is an object of the present invention to provide a buried tunnel sealing member which does not require a large amount of mounting work.
【０００９】[0009]
【課題を解決する為の手段】上記目的を達成する本発明
の沈埋トンネル用シール部材は、沈埋トンネル工法にお
ける各沈埋函の接合端面間に介装され、トンネル内の気
密を保持するものであって、弾性素材によって所定高さ
に形成され、前記沈埋函の接合端面にその開口縁に沿っ
て配設されて接合相手側の沈埋函の接合圧力を受ける受
圧部材と、弾性素材によって前記受圧部材より所定量高
く形成され、前記開口縁に沿って開口部全周に連続して
配設されて前記接合相手側の沈埋函の接合端面に圧接さ
れて気密を保持するシール部材と、により構成されてい
ることを特徴とする。The seal member for buried tunnels of the present invention, which achieves the above object, is interposed between the joining end faces of each buried box in the buried tunnel construction method, and maintains the airtightness in the tunnel. A pressure receiving member formed at a predetermined height by an elastic material, disposed on the joint end surface of the immersion box along an opening edge thereof, and receiving a joining pressure of the immersion box on a joining partner side; and the pressure receiving member by an elastic material. A sealing member which is formed higher by a predetermined amount, is disposed continuously along the entire periphery of the opening along the opening edge, and is pressed against the joining end face of the sinking box on the joining partner side to maintain airtightness. It is characterized by having.
【００１０】[0010]
【作用】沈埋函の接合時には、シール部材が受圧部材よ
り先に接合相手側沈埋函の接合端面に当接して弾性変形
して気密保持に必要な反力を得ると共に、所定以上の接
合圧力はシール部材が弾性変形して逃げるために受圧部
材が受ける。気密は、シール部材が接合相手側沈埋函の
接合端面に圧接されることで保持され、接合沈埋函同士
が近接する方向の変位は受圧部材の圧縮変形によって吸
収し、接合沈埋函同士が離間する方向の変位にはシール
部材が弾性復帰して追従する。[Function] At the time of joining of a buried box, the seal member comes into contact with the joining end surface of the buried box on the mating side prior to the pressure-receiving member and is elastically deformed to obtain a reaction force necessary for airtight maintenance. The pressure receiving member receives because the seal member is elastically deformed and escapes. The airtightness is maintained by the sealing member being pressed against the joint end surface of the buried box on the other side of the joint, the displacement in the direction in which the buried joints approach each other is absorbed by compressive deformation of the pressure receiving member, and the buried joints are separated. The seal member elastically returns to follow the displacement in the direction, and follows the displacement.
【００１１】[0011]
【発明の実施例】以下添付図面を参照して本発明の一実
施例について説明する。図１は、本発明に係る沈埋トン
ネル用シール部材の一実施例である沈埋トンネル用ガス
ケットの断面図である。An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a gasket for a buried tunnel, which is one embodiment of a seal member for a buried tunnel according to the present invention.
【００１２】図示沈埋トンネル用ガスケット１は、受圧
部材としての受圧ゴム１０と、その周囲を覆うシール部
材としてのシールゴム２０とによって構成されている。The illustrated gasket 1 for a submerged tunnel comprises a pressure receiving rubber 10 as a pressure receiving member and a seal rubber 20 as a sealing member covering the periphery thereof.
【００１３】受圧ゴム１０は、所定の硬度のゴムによっ
て、断面形状が略正方形で紙面と直交する方向（長手方
向）には取付け作業が容易な適当な長さとして形成され
ている。その内部には、三枚の所定厚さの補強鉄板１１
が厚さ方向に所定間隔でインサートされている。幅方向
中央には、取付け孔１２が縦に穿設されており、該取付
け孔１２には、最下層の補強鉄板１１の上面に達する深
さの穴グリが施されている。この取付け孔１２は当該受
圧ゴム１０の長さ方向に所定間隔で設けられている。The pressure-receiving rubber 10 is made of rubber having a predetermined hardness and has a cross-sectional shape of approximately square, and is formed to have an appropriate length in a direction (longitudinal direction) perpendicular to the plane of the drawing to facilitate the mounting operation. Inside thereof, three reinforcing iron plates 11 having a predetermined thickness are provided.
Are inserted at predetermined intervals in the thickness direction. At the center in the width direction, a mounting hole 12 is vertically formed, and the mounting hole 12 is provided with a hole having a depth reaching the upper surface of the lowermost reinforcing iron plate 11. The mounting holes 12 are provided at predetermined intervals in the length direction of the pressure receiving rubber 10.
【００１４】シールゴム２０は、底面（装着面）側に受
圧ゴム１０を収容し得る受圧ゴム収容空間２１が凹設さ
れ、受圧ゴム１０に被せることで当該受圧ゴム１０の底
面を除く側面および上面を覆い得る断面形状として、所
定の硬度のゴムによって形成されている。紙面と直交す
る方向には、取付けられる沈埋函の開口部と対応するリ
ング状に一体に形成されており、これは、押し出し成形
または積層成形によって当該断面形状の棒状の素材を形
成した後、これを沈埋函の開口部形状に合わせて端面同
士を接合することによって作られる。The sealing rubber 20 has a recessed rubber receiving space 21 for receiving the pressure receiving rubber 10 on the bottom surface (mounting surface) side, and covers the pressure receiving rubber 10 so that the side surface and the upper surface except the bottom surface of the pressure receiving rubber 10 are covered. The cross-sectional shape that can be covered is made of rubber having a predetermined hardness. In the direction perpendicular to the paper surface, it is integrally formed in a ring shape corresponding to the opening of the buried box to be attached, which is formed by extruding or laminating to form a rod-shaped material having the cross-sectional shape. It is made by joining the end faces together according to the shape of the opening of the buried box.
【００１５】シールゴム２０の外形は、高さが受圧ゴム
１０の厚さの約２倍で、上面の幅が装着面側の幅より所
定量幅狭の台形状であって、その装着面の両側端部が夫
々側方に所定の厚さの板状に延設されて取付け部２２が
形成されている。この取付け部２２は、厚さ方向に層状
に内装された補強繊維によって補強されており、ここに
厚さ方向に貫通する取付け穴２２Ａが穿設され、該取付
け穴２２Ａはシールゴム２０の長手方向に所定の間隔で
配置されている。上面の幅方向両端近傍には、夫々断面
形状三角形のシールノーズ２３が所定高さに突設されて
いる。The outer shape of the seal rubber 20 is a trapezoid whose height is about twice the thickness of the pressure receiving rubber 10 and whose upper surface is narrower by a predetermined amount than the width of the mounting surface. The attachment portions 22 are formed by extending the end portions sideways into a plate shape having a predetermined thickness. The mounting portion 22 is reinforced by reinforcing fibers provided in layers in the thickness direction. A mounting hole 22A is formed in the mounting portion 22 so as to penetrate in the thickness direction. They are arranged at predetermined intervals. In the vicinity of both ends in the width direction of the upper surface, a seal nose 23 having a triangular cross section is protruded at a predetermined height.
【００１６】受圧ゴム収容空間２１は、当該収容空間２
１内に受圧ゴム１０を収容したとき受圧ゴム１０にシー
ルゴム２０を被せたときの隙間である。The pressure receiving rubber receiving space 21 is
1 is a gap when the pressure receiving rubber 10 is accommodated in the pressure receiving rubber 10 and the seal rubber 20 is put on the pressure receiving rubber 10.
【００１７】上記のごとき外形と受圧ゴム収容空間２１
の形状によって、シールゴム２０は全体に略均一な肉厚
となっている。The outer shape and the pressure receiving rubber accommodating space 21 as described above.
, The seal rubber 20 has a substantially uniform wall thickness as a whole.
【００１８】上記のごとく構成された沈埋トンネル用ガ
スケット１は、図３にその概念的斜視図を示すように、
沈埋函２の接続端面２Ａに、まず受圧ゴム１０を六角穴
付きボルト１３（図３には示さず）によって取付け、そ
の後受圧ゴム１０に被せた状態でシールゴム２０を六角
ボルト２４（図３には示さず）によって取付ける。ここ
で、受圧ゴム１０は沈埋函の開口縁２Ｂに沿って取付け
るが、必ずしも連続するように取付けなければならない
ものではなく、沈埋函の接合圧力に耐えられる範囲で間
隔を開けてもよいものである。一方、シールゴム２０
は、沈埋函の開口縁２Ｂに沿って開口部周囲を連続して
囲むように一体成形されていることが必要である。これ
は、シールゴム２０が気密を保持するように機能し、受
圧ゴム１０は沈埋函の圧接力を受け止めるように作用す
るのみで気密保持には寄与しないことによる。The gasket 1 for a buried tunnel constructed as described above has a conceptual perspective view shown in FIG.
First, the pressure receiving rubber 10 is attached to the connection end face 2A of the immersion box 2 with a hexagon socket head bolt 13 (not shown in FIG. 3), and then the sealing rubber 20 is covered with the pressure receiving rubber 10 and the hexagon bolt 24 (FIG. (Not shown). Here, the pressure-receiving rubber 10 is attached along the opening edge 2B of the buried box, but it is not always necessary to attach it so as to be continuous, and may be spaced apart within a range that can withstand the joining pressure of the buried box. is there. On the other hand, the sealing rubber 20
Must be integrally formed so as to continuously surround the periphery of the opening along the opening edge 2B of the buried box. This is because the seal rubber 20 functions to maintain airtightness, and the pressure-receiving rubber 10 only acts to receive the press-contact force of the submerged box but does not contribute to airtightness.
【００１９】次に、上記構成の沈埋トンネル用ガスケッ
ト１の作用を説明する。沈埋函施工時には、沈埋トンネ
ル用ガスケット１を取付けた沈埋函２の端部に沈埋トン
ネル用ガスケットを装着しない沈埋函３（図３には示さ
ず）の端面を水圧によって圧接する。この圧力によっ
て、図２に示すようにシールゴム２０はその側板部２０
Ａが外側に屈曲変形し、上板部２０Ｂの内面（下面）が
受圧ゴム１０の上面に当接してこの上板部２０Ｂが受圧
ゴム１０の上に乗った状態となり、以後、受圧ゴム１０
が圧力を受ける。つまり、シールゴム２０の上板部２０
Ｂの下面が受圧ゴム１０の上面に達するまでは、側板部
２０Ａの屈曲変形による反力で沈埋函３の端面を押圧し
た状態で沈埋函２, ３の間に介装され、これによって気
密を保持する。一方、上板部２０Ｂの下面が受圧ゴム１
０の上面に達した後は、受圧ゴム１０が沈埋函の圧接力
を受けて、シールゴム２０のそれ以上の変形を抑制する
ものである。Next, the operation of the gasket 1 for a buried tunnel having the above-described structure will be described. At the time of submerging box construction, the end surface of the submerging box 3 (not shown in FIG. 3) without the submerged tunnel gasket is pressed against the end of the submerged box 2 to which the submerged tunnel gasket 1 is attached by water pressure. Due to this pressure, the seal rubber 20 has its side plate 20 as shown in FIG.
A is bent outward and the inner surface (lower surface) of the upper plate portion 20B abuts on the upper surface of the pressure receiving rubber 10 so that the upper plate portion 20B rides on the pressure receiving rubber 10.
Receives pressure. That is, the upper plate portion 20 of the seal rubber 20
Until the lower surface of B reaches the upper surface of the pressure-receiving rubber 10, the end surface of the immersion box 3 is interposed between the immersion boxes 2 and 3 while the end face of the immersion box 3 is pressed by the reaction force due to the bending deformation of the side plate portion 20 </ b> A. Hold. On the other hand, the lower surface of the upper plate portion 20B is
After reaching the upper surface of the seal rubber 20, the pressure receiving rubber 10 receives the pressing force of the buried box to suppress further deformation of the seal rubber 20.
【００２０】この沈埋トンネル用ガスケット１の変形量
と反力の関係を図４のグラフに示す。即ち、沈埋トンネ
ル用ガスケット１全体としては、シールゴム２０の変形
量-反力特性と受圧ゴム１０の変形量- 反力特性とを合
成した特性を示し、シールゴム２０のみが変形している
領域では、変形量が小さい状態では変形量に比例して反
力が増加するがその後変形量の増大にかかわらず略一定
の反力となって安定し、上板部２０Ｂの下面が受圧ゴム
１０の上面に当接した後は受圧ゴム１０の変形量に比例
して反力が増加する。尚、図４は、受圧ゴムの高さが１
００mm, 幅が１５０mm, シールゴムの上面までの高さが
２００mmのものの特性を示したものである。FIG. 4 is a graph showing the relationship between the amount of deformation and the reaction force of the gasket 1 for submerged tunnels. That is, the entire gasket 1 for a buried tunnel shows characteristics obtained by combining the deformation-reaction characteristics of the seal rubber 20 and the deformation-reaction characteristics of the pressure-receiving rubber 10. In a region where only the seal rubber 20 is deformed, When the amount of deformation is small, the reaction force increases in proportion to the amount of deformation, but thereafter, the reaction force becomes substantially constant regardless of the increase in the amount of deformation and becomes stable, and the lower surface of the upper plate portion 20B is placed on the upper surface of the pressure receiving rubber 10. After the contact, the reaction force increases in proportion to the amount of deformation of the pressure receiving rubber 10. FIG. 4 shows that the height of the pressure receiving rubber is 1
The characteristics are shown for a sample having a thickness of 00 mm, a width of 150 mm, and a height up to a top surface of the seal rubber of 200 mm.
【００２１】このように、シールゴム２０の変形量- 反
力特性を、当該シールゴム２０単独で広い変形範囲で止
水に必要な反力が得られるように設定すると共に、施工
時の接合圧力は受圧ゴム１０が受けて所定の反力となる
ように受圧ゴム１０とシールゴム２０の厚さを設定して
おくことにより、沈埋函同士が離間する方向への変位は
シールゴム２０が止水に必要な反力を保つ領域内で許容
でき、沈埋函同士が近接する方向の変位は受圧ゴム１０
が破壊に至るまで許容できる。つまり、止水に必要な反
力で変形するシールゴム２０と、圧力を受けて沈埋函の
間隔を維持する受圧ゴム１０を組み合わせて構成したこ
とにより、沈埋函の大きな変位を許容吸収することがで
きるものである。As described above, the deformation-reaction characteristics of the seal rubber 20 are set so that the seal rubber 20 alone can obtain the reaction force required for water stoppage in a wide deformation range, and the joining pressure at the time of construction is the pressure receiving pressure. By setting the thickness of the pressure receiving rubber 10 and the thickness of the sealing rubber 20 so that the rubber 10 receives the predetermined reaction force, the displacement in the direction in which the submerged boxes are separated from each other can prevent the sealing rubber 20 from reacting when the sealing rubber 20 needs to stop water. The displacement in the direction in which the buried boxes approach each other is acceptable within the area where the force is maintained.
Is acceptable up to destruction. In other words, the combination of the seal rubber 20 that is deformed by the reaction force necessary for stopping water and the pressure-receiving rubber 10 that maintains the distance between the buried boxes by receiving pressure allows a large displacement of the buried box to be absorbed. Things.
【００２２】尚、上記実施例は、受圧ゴム１０を覆うよ
うにシールゴム２０を形成したものであるが、本発明は
この構成に限定されるものではなく、装着スペースさえ
許すのであれば受圧ゴム１０とシールゴム２０とを並べ
て配置しても良い。In the above embodiment, the seal rubber 20 is formed so as to cover the pressure receiving rubber 10. However, the present invention is not limited to this configuration. And the seal rubber 20 may be arranged side by side.
【００２３】又、シールゴム２０の形状は、変形初期に
おいて反力の増大が著しいと共にその後はなるべく広い
範囲で反力が一定となる特性を備えるように設定するこ
とが望まれ、そのためには図６に示す逆Ｕ型や図７に示
すＯ型より図５に示す逆Ｖ型が好ましい特性を備えてい
るといえるが、肉厚や形状を適宜変更することで、希望
する特性に設定すれば良いものである。It is desired that the shape of the seal rubber 20 be set so that the reaction force is remarkably increased at the initial stage of deformation and thereafter, the reaction force is constant over a wide range as much as possible. It can be said that the inverted V type shown in FIG. 5 has more preferable characteristics than the inverted U type shown in FIG. 7 and the O type shown in FIG. 7. However, the desired characteristics may be set by appropriately changing the thickness and shape. Things.
【００２４】[0024]
【発明の効果】以上述べたように、本発明に係る沈埋ト
ンネル用シール部材によれば、接合相手側の沈埋函の接
合圧力を受ける受圧部材と、接合相手側の沈埋函の接合
端面に圧接されて気密を保持する受圧部材より所定量高
いシール部材により構成されているため、沈埋函内の気
密はシール部材が保持すると共に、沈埋函の接合圧力は
シール部材が弾性変形して受圧部材に当接した後に受圧
部材が受けることとなる。このため、断面積を大きくす
ることなく止水可能な反力を得られるシール部材の変形
範囲を広くすることができ、沈埋函の大きな変位に追従
し得ると共に、沈埋函の大きな接合圧力にも安定して耐
えることができる。As described above, according to the sealing member for a buried tunnel according to the present invention, the pressure receiving member receiving the joining pressure of the buried box on the mating side and the joining end face of the buried box on the mating side are pressed. Since the sealing member is configured by a sealing member that is higher than the pressure receiving member that maintains airtightness by a predetermined amount, the airtightness in the immersion box is held by the sealing member, and the joining pressure of the burying box is elastically deformed by the sealing member and the pressure receiving member is After the contact, the pressure receiving member receives the pressure. For this reason, it is possible to widen the deformation range of the seal member that can obtain the reaction force that can stop water without increasing the cross-sectional area, follow the large displacement of the immersion box, and It can endure stably.
【００２５】又、受圧部材は、止水に直接寄与するもの
ではないため、分割構成とすることができ、成形が容易
であると共に、取付け作業も容易となる。Further, since the pressure receiving member does not directly contribute to water stoppage, the pressure receiving member can be formed in a divided structure, so that molding is easy and mounting work is also easy.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明に係る沈埋トンネル用シール部材の一実
施例を適用した沈埋函用ガスケットの断面図である。FIG. 1 is a cross-sectional view of a gasket for burying a box to which an embodiment of a sealing member for a burying tunnel according to the present invention is applied.
【図２】沈埋函用ガスケットの圧縮状態を示す断面図で
ある。FIG. 2 is a sectional view showing a compressed state of the gasket for burying a box.
【図３】沈埋函用ガスケットの沈埋函への装着状態を概
念的に示す図である。FIG. 3 is a view conceptually showing a state in which a gasket for a buried box is attached to the buried box.
【図４】沈埋函用ガスケットの変形量と反力の関係を示
すグラフである。FIG. 4 is a graph showing the relationship between the amount of deformation and the reaction force of the gasket for submerged boxes.
【図５】逆Ｖ型シールゴムおよびその変形量と反力の関
係を示すグラフである。FIG. 5 is a graph showing the relationship between the inverse V-shaped seal rubber, the amount of deformation thereof, and the reaction force.
【図６】逆Ｕ型シールゴムおよびその変形量と反力の関
係を示すグラフである。FIG. 6 is a graph showing the relationship between the inverted U-shaped seal rubber, its deformation amount and the reaction force.
【図７】Ｏ型シールゴムおよびその変形量と反力の関係
を示すグラフである。FIG. 7 is a graph showing a relationship between an O-type seal rubber, its deformation amount and a reaction force.
【図８】従来例であるジナ型パッキンの断面図である。FIG. 8 is a cross-sectional view of a gina type packing as a conventional example.
【図９】ゴムのみよって形成されたジナ型パッキンの変
形量と反力の関係を示すグラフである。FIG. 9 is a graph showing the relationship between the amount of deformation and the reaction force of a gina-type packing formed only of rubber.
【図１０】補強鉄板入りジナ型パッキンの変形量と反力
の関係を示すグラフである。FIG. 10 is a graph showing the relationship between the amount of deformation and the reaction force of a gina-type packing containing a reinforcing iron plate.
１…沈埋函用ガスケット（沈埋トンネル用シール部材） ２…沈埋函 １０…受圧ゴム（受圧部材） １１…補強鉄板（補強板） DESCRIPTION OF SYMBOLS 1 ... Gasket for immersion box (seal member for immersion tunnel) 2 ... Sinking box 10 ... Pressure receiving rubber (pressure receiving member) 11 ... Reinforcing iron plate (reinforcing plate)
Claims (4)
合端面間に介装され、トンネル内の気密を保持するもの
であって、 弾性素材によって所定高さに形成され、前記沈埋函の接
合端面にその開口縁に沿って配設されて接合相手側の沈
埋函の接合圧力を受ける受圧部材と、 弾性素材によって前記受圧部材より所定量高く形成さ
れ、前記開口縁に沿って開口部周囲全周に連続して配設
されて前記接合相手側の沈埋函の接合端面に圧接されて
気密を保持するシール部材と、 により構成され、前記接合相手方の沈埋函の接合圧力を
受けない状態において、前記シール部材は、前記受圧部
材の上面と所定の間隔を有して前記受圧部材を覆い、前
記接合相手方の沈埋函の接合圧力を受けた時前記所定の
間隔だけ弾性的に圧縮変形して前記受圧部材の上面に圧
接されるように前記沈埋函の接合端面に配設されること
を特徴とする沈埋トンネル用シール部材。1. A buried tunnel construction method which is interposed between joint end faces of each buried box to maintain airtightness in the tunnel, is formed at a predetermined height by an elastic material, and is provided at a joint end face of the buried box. A pressure-receiving member disposed along the opening edge and receiving the joining pressure of the submerged box on the joining partner side; and a predetermined amount higher than the pressure-receiving member made of an elastic material, and along the opening edge all around the opening. A sealing member that is continuously disposed and pressed against the joining end surface of the immersion box on the mating side to maintain airtightness; and
In the non-receiving state, the sealing member is
Cover the pressure receiving member at a predetermined distance from the upper surface of the material,
When receiving the bonding pressure of the sinking box of the mating partner
It is elastically compressed and deformed by the distance and the pressure
A sealing member for a buried tunnel, which is disposed on a joint end face of the buried box so as to be in contact therewith.
に形成されると共に、上記シール部材は前記受圧部材の
外面と所定の間隔を有して覆う断面形状であって、上記
沈埋函の接合端面に前記受圧部材を覆う状態で配設され
るように構成されていること、を特徴とする請求項１に
記載の沈埋トンネル用シール部材。2. The pressure-receiving member has a substantially rectangular cross-sectional shape, and the seal member has a cross-sectional shape that covers the outer surface of the pressure-receiving member at a predetermined interval. 2. The seal member for a buried tunnel according to claim 1, wherein the seal member is configured to be disposed on a joint end surface so as to cover the pressure receiving member.
高さ方向に層状に内挿されていること、を特徴とする請
求項２に記載の沈埋トンネル用シール部材。3. The sealing member for a buried tunnel according to claim 2, wherein the pressure receiving member has a reinforcing plate such as an iron plate inserted in a layered manner in the height direction.
面側に向かって裾広がりの台形状であること、を特徴と
する請求項２に記載の沈埋トンネル用シール部材。4. The sealing member for a buried tunnel according to claim 2, wherein the sealing member has a trapezoidal cross-sectional shape that expands toward the mounting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5294076A JP2614182B2 (en) | 1993-10-29 | 1993-10-29 | Seal member for buried tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5294076A JP2614182B2 (en) | 1993-10-29 | 1993-10-29 | Seal member for buried tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07127083A JPH07127083A (en) | 1995-05-16 |
| JP2614182B2 true JP2614182B2 (en) | 1997-05-28 |
Family
ID=17802980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5294076A Expired - Lifetime JP2614182B2 (en) | 1993-10-29 | 1993-10-29 | Seal member for buried tunnel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2614182B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5016085B2 (en) * | 1971-11-10 | 1975-06-10 | ||
| JPS61229028A (en) * | 1985-04-03 | 1986-10-13 | Bridgestone Corp | Sealing device |
-
1993
- 1993-10-29 JP JP5294076A patent/JP2614182B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07127083A (en) | 1995-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5163785A (en) | Method for sealing connections between sheet piles, and sheet piles employing said method | |
| EP0181866B1 (en) | Access covers for manholes | |
| US6305695B1 (en) | Gaskets | |
| JP2614182B2 (en) | Seal member for buried tunnel | |
| EP1176344A2 (en) | Metal gasket with bead and seal coating | |
| JP2598751B2 (en) | Submerged box for submerged tunnel and its installation method | |
| JP4259952B2 (en) | Joining structure of rubber gasket and sinking box using it | |
| JPH11140994A (en) | Joint structure of precast concrete members | |
| JP2767209B2 (en) | Flexible segment for shield method | |
| JPH07166563A (en) | Rubber gasket for submerged tunnel | |
| JP3353163B2 (en) | Joint structure of lining segment | |
| JP4830354B2 (en) | Basement unit joint structure of metal box basement | |
| JP2614183B2 (en) | Segment for shield tunnel | |
| JPH048194Y2 (en) | ||
| JPS6121357Y2 (en) | ||
| JPH09144039A (en) | Gasket for immersed tunnel | |
| JP2006161515A (en) | Joint structure of submerged case | |
| JP4305175B2 (en) | Three-sided seal structure | |
| GB2266640A (en) | Sealing means for flextensional sonar transducer assembly | |
| JP3058923U (en) | Water stop device in lid receiving part | |
| JP2017008480A (en) | Elastic packing used with joint part of tunnel segments | |
| JP2600150Y2 (en) | Sunk tunnel | |
| JP2013194387A (en) | Inter-tunnel seal structure | |
| JPS6340025A (en) | Corrosion-resistant covering structure for steel tubular sheet pile | |
| JPH0752164Y2 (en) | Structure of underwater form seal material |