JPH0626637Y2 - Joint sealant - Google Patents
Joint sealantInfo
- Publication number
- JPH0626637Y2 JPH0626637Y2 JP1988058857U JP5885788U JPH0626637Y2 JP H0626637 Y2 JPH0626637 Y2 JP H0626637Y2 JP 1988058857 U JP1988058857 U JP 1988058857U JP 5885788 U JP5885788 U JP 5885788U JP H0626637 Y2 JPH0626637 Y2 JP H0626637Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- seal member
- swelling
- swellable
- joint
- 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
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Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、目地シール材に係り、より詳細には、シール
ド工事などにおいてセグメントの継手目地部分からの漏
水を防止する目地シール材に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a joint seal material, and more particularly to a joint seal material for preventing water leakage from a joint joint portion of a segment in shield construction or the like.
〔従来の技術〕 セグメントを抗内で管状に組み立て、トンネルを構築す
るシールド工法においては、各隣接セグメント間の継手
目地が多い。そして、この部分の継手面には、シールド
ジャッキ推力による繰り返し荷重や土圧の経時的変化に
より、空隙が生じ易く、しかも、シールドトンネルは、
地下水位下に構築されることが多いのと相まって、その
空隙から漏水するという問題がある。[Prior Art] In a shield construction method for constructing a tunnel by assembling segments into a tubular shape within a tunnel, there are many joint joints between adjacent segments. And, in the joint surface of this part, a gap is apt to occur due to the repeated load due to the thrust force of the shield jack and the temporal change of the earth pressure, and moreover, the shield tunnel is
In addition to being often constructed below the groundwater level, there is the problem of water leakage from the void.
そこで、今日では、該漏水による水膨張圧で止水を可能
にした水膨潤性ゴムを材料として用いた目地シール材が
用いられるようになっている。しかし、該水膨潤性ゴム
を用いたシール材の場合、膨潤しすぎて、セグメントの
側方に垂れ出して膨出するという問題が指摘されてい
る。そこで、該問題を軽減するものとして、近年、第４
図に示すような『中間部が水膨潤性シール部材１でその
両側に非水膨潤性シール部材２、２を配し、中間の水膨
潤性シール部材１の厚みｈの少なくとも一部分が両側の
非水膨潤性シール部材２、２の厚みｈ１より厚い寸法に
形成するようにした構成の目地シール材』（実開昭６０
−１５９０９９号公報参照）が提案されている。Therefore, nowadays, a joint sealant using a water-swelling rubber capable of stopping water by the water expansion pressure due to the water leakage is used. However, it has been pointed out that in the case of a sealing material using the water-swellable rubber, it swells too much and swells to the side of the segment. Therefore, in order to reduce the problem, the fourth
As shown in the figure, "the water-swellable seal member 1 is located in the middle portion, and the non-water-swellable seal members 2 and 2 are arranged on both sides of the water-swellable seal member 1. A joint seal material having a structure in which the water swellable seal members 2 and 2 are formed to have a thickness larger than the thickness h 1 of the seal material 2 ”(Actual Development Sho 60
No. -159099) is proposed.
該目地シール材は、ゴム弾性によるシール効果と、吸水
膨張によるシール効果を併せ持ち、かつ側方への水膨潤
性シール部材の膨らみを非水膨潤性シール部材によって
制限するので、『シール材が膨潤によってセグメント側
方に膨出してシール効果を低下させる』という従来の水
膨潤性ゴムを用いた目地シール材の問題を解消できると
いう利点を有する。The joint sealant has both a sealing effect due to rubber elasticity and a sealing effect due to water absorption expansion, and restricts the lateral swelling of the water-swellable seal member by the non-water-swellable seal member. It has an advantage that the problem of the conventional joint seal material using the water-swellable rubber can be solved.
しかし、上述した目地シール材の場合、次ぎのような問
題がある。すなわち、 隣接セグメントの継手面ボルト結合に際し、水膨潤性
シール部材１が圧接され非水膨潤性シール部材２、２は
フリーの状態となるので、不安定で隣接セグメントの強
固な結合強度が得られない。However, the joint sealing material described above has the following problems. That is, at the time of joining the joint surface bolts of the adjacent segments, the water-swellable seal member 1 is pressed and the non-water-swellable seal members 2 and 2 are in a free state, so that unstable and strong joint strength of the adjacent segment is obtained. Absent.
水膨潤性シール部材１が、隣接セグメント間で、最初
より圧縮・締付されているので、膨潤によって強度が低
下すると共に、劣化が促進されやすい。Since the water-swellable seal member 1 is compressed and tightened between the adjacent segments from the beginning, the strength is lowered and the deterioration is easily promoted by the swelling.
水膨潤性シール部材を非水膨潤性シール部材で挟持・
重合した構成であるので、水膨潤性シール部材が、漏水
との接触によって膨潤した場合、非水膨潤性シール部材
によって該膨潤が制限され、中間部の水膨潤性シール部
材が非水膨潤性シール部材を越えて膨潤することにな
り、その強度が低下する。The water-swellable seal member is sandwiched between non-water-swellable seal members.
When the water-swellable seal member swells due to contact with water leakage due to the polymerized structure, the swelling is limited by the non-water-swellable seal member, and the water-swellable seal member in the middle portion is the non-water-swellable seal. It will swell beyond the member and its strength will decrease.
そこで、本考案者は、以上の問題点に立脚して種々検討
した処、両側部の非水膨潤性シール部材にも多少の膨潤
性を付与することで、かかる問題を解消できることを見
い出した。Therefore, the present inventor has made various studies based on the above problems and found that such a problem can be solved by imparting some swelling property to the non-water swelling seal members on both sides.
本考案は、上述した点に対処して創案したものであっ
て、その目的とする処は、水膨潤性シール材の垂れ出し
膨出を防止し、かつ隣接セグメント間の強固な結合強度
を得ると共にシール材の強度の低下を軽減できる目地シ
ール材を提供することにある。The present invention has been made in view of the above points, and its purpose is to prevent the water-swellable sealing material from bulging and swelling and to obtain a strong bonding strength between adjacent segments. Another object of the present invention is to provide a joint seal material that can reduce the decrease in strength of the seal material.
そして、上記目的を達成するための手段としての本考案
の目地シール材は、横幅方向中間部に高水膨潤性シール
部材を介在させ、該高水膨潤性シール部材の両側部に低
水膨潤性シール部材を配設し、該高水膨潤性シール部材
と低水膨潤性シール部材を横幅方向に重合一体化し、か
つ該高水膨潤性シール部材の上面を波形状に形成し、該
上面山部における厚みｈ１と低水膨潤性シール部材の厚
みｈ２とを、ｈ１≦ｈ２の関係にした構成よりなる。The joint sealing material of the present invention as a means for achieving the above object has a high water swelling seal member interposed in the lateral width direction intermediate portion, and has a low water swelling property on both sides of the high water swelling seal member. A seal member is provided, the high water swellable seal member and the low water swellable seal member are polymerized and integrated in the lateral width direction, and the upper surface of the high water swellable seal member is formed into a wavy shape, and the upper surface ridge portion is formed. and thickness h 2 of the thickness h 1 and the low water swellable seal member in, the constitution in which the relationship of h 1 ≦ h 2.
そして、上記構成に基づく本考案の目地シール材は、シ
ールドトンネル築造の際のセグメント等の継手面に添設
してセグメント等の構築物をボルトなどで結合するもの
である。その際、両側部の低水膨潤性シール部材は最初
から常に隣接セグメント等に面接圧着され、隣接セグメ
ント等を強固に締めつけることができるように作用す
る。そして、経時変化により隣接セグメント等の間の空
隙ができて漏水があると、その漏水が高水膨潤性シール
部材に触れて、該高水膨潤性シール部材が膨張し空隙を
塞いで止水し、更に、両側の低水膨潤性シール部材も僅
かな膨潤をして水膨潤性シール部材の垂れ出し膨出を防
止する共に、セグメント間での結合強度を高めるように
作用する。The joint sealing material of the present invention based on the above structure is attached to a joint surface of a segment or the like when constructing a shield tunnel, and the structure of the segment or the like is coupled with a bolt or the like. At this time, the low-water-swelling seal members on both sides are always in face-to-face contact with the adjacent segment or the like from the beginning so that the adjacent segment or the like can be firmly tightened. Then, when there is water leakage due to a gap between adjacent segments due to aging, the water leakage touches the high water swellable seal member, and the high water swellable seal member expands to block the gap and stop water. Further, the low water swelling seal members on both sides also slightly swell to prevent the water swelling seal member from swelling and swelling, and at the same time, act to increase the bonding strength between the segments.
以上のように、本考案の目地シール材は、シール部材と
して、高膨潤性シール部材と低水膨潤性シール部材とを
重合した点に特徴を有し、この点によって、シール部材
の劣化を軽減すると共にシール効果を向上させることが
できるという格別な作用を奏するシール材である。As described above, the joint sealing material of the present invention is characterized in that a high swelling sealing member and a low water swelling sealing member are superposed as a sealing member, and this point reduces deterioration of the sealing member. In addition, it is a sealing material that has a special effect that the sealing effect can be improved.
以下、図面を参照しながら本考案を具体化した実施につ
いて詳細に説明する。Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
ここに、第１図は帯状シール材の横断面図、第２図は取
付状態を示す説明図である。なお、従来例と同一対応個
所には同一符号を附した。Here, FIG. 1 is a cross-sectional view of the band-shaped sealing material, and FIG. 2 is an explanatory view showing a mounted state. The same parts as those in the conventional example are designated by the same reference numerals.
本実施例の目地シール材は、概略すると、その横幅方向
中間部に高水膨潤性シール部材１を介在させ、高水膨潤
性シール部材１の両側部に低水膨潤性シール部材２、２
を配して帯状に形成し、加硫成形した構成よりなる。The joint sealing material of the present embodiment is roughly described by interposing the high water swelling seal member 1 in the middle portion in the lateral width direction, and the low water swelling seal members 2 and 2 on both sides of the high water swelling seal member 1.
Is formed into a strip shape by vulcanization molding.
そして、高水膨潤性シール部材１は、上面が波形状をし
ていて、その山頂の高さ（厚み）ｈ１を、両側部の低水
膨潤性シール部材２、２の高さ（厚み）ｈ２より低くし
た構成となっている。そして、高水膨潤性シール部材１
は、水膨潤性ゴム弾性材で形成されていて、具体的に
は、ＡＢＳ（アクリロニトリル・ブタジエン・スチレン
共重合体）樹脂や天然ゴムと高吸水性ポリマー（アクリ
ル酸ビニルアルコール共重合体）とに顔料と加硫剤を入
れた生地と、該顔料と加硫剤を入れていない生地とを等
量混合して成形したもの（登録商標「アクアケル」：王
子ゴム化成（株）製）を用い、かつ体積膨潤倍率が五倍
以上のものを用いている。The upper surface of the high water swelling seal member 1 has a corrugated shape, and the height (thickness) h 1 of the crest thereof is the height (thickness) of the low water swelling seal members 2 and 2 on both sides. It is configured to be lower than h 2 . And the high water swelling seal member 1
Is made of a water-swellable rubber elastic material. Specifically, it is made of ABS (acrylonitrile-butadiene-styrene copolymer) resin or natural rubber and super absorbent polymer (vinyl alcohol acrylate copolymer). Using a material obtained by mixing equal amounts of the pigment and the vulcanizing agent-containing material and the pigment and the vulcanizing agent-free material (registered trademark "Aquakel": manufactured by Oji Rubber Kasei Co., Ltd.), Moreover, the one having a volume swelling ratio of 5 times or more is used.
ここで、高水膨潤性シール部材１の上面に形成される波
形は、余弦波形または正弦波形であって、その波長を波
高より長い低周波状の波形としている（本実施例におい
ては、余弦波形）。また、必要に応じて、複合波形状と
することもある。そして、波形を余弦波形または正弦波
形とすることで、折曲部が形成されず、圧縮、膨張によ
る亀裂を軽減できる。なお、図面においては、高水膨潤
性シール部材１の上面に形成される波形の山部を二個の
場合で説明したが、複数個有する構成としてもよいこと
は明らかである。Here, the waveform formed on the upper surface of the highly water-swellable seal member 1 is a cosine waveform or a sine waveform, and its wavelength is a low frequency waveform longer than the wave height (in the present embodiment, the cosine waveform is used. ). In addition, a composite wave shape may be used if necessary. When the waveform is a cosine waveform or a sine waveform, no bent portion is formed, and cracks due to compression and expansion can be reduced. In the drawings, the case where two corrugated peaks are formed on the upper surface of the highly water-swellable seal member 1 has been described, but it is clear that a plurality of corrugated peaks may be provided.
低水膨潤性シール部材２は、上面が平坦状に形成され、
隣接する高水膨潤性シール部材１とは連続した曲面を形
成している。そして、低水膨潤性シール部材２として
は、前述した高水膨潤性シール部材と同様な種類の材料
を用い、体積膨潤倍率が三倍以内のものを用いている。
シール部材１とシール部材２とは、倍率が低いと、その
復元力、伸び引っ張り強度において、大きいので、セグ
メント間における締付強度を保持できる。The low water swellable seal member 2 has a flat upper surface,
The adjacent highly water-swellable seal member 1 forms a continuous curved surface. As the low water swelling seal member 2, the same kind of material as that of the high water swelling seal member described above is used, and the volume swelling ratio is within 3 times.
When the sealing member 1 and the sealing member 2 have a low magnification, their restoring force and extensional tensile strength are large, so that the tightening strength between the segments can be maintained.
そして、本実施例の目地シール材は、セグメント間にお
いて、両側部の低膨潤性シール部材２、２が最初から常
に隣接セグメント等に面接圧着され、隣接セグメント等
を強固に締めつけられて、経時変化により隣接セグメン
ト等の間に空隙ができて漏水があると三倍の体積膨潤を
して締付強度を高めて一次止水し、更に、その漏水が高
水膨潤性シール部材に触れると該高水膨潤性シール部材
が両側のシール部材１より大きく、五倍の体積膨張をし
て空隙を塞いで二次止水するように作用する。また、両
側の低膨潤性シール部材によって高水膨潤性シール部材
の垂れ出し膨出も防止されるように作用する。In the joint seal material of the present embodiment, the low swelling seal members 2 and 2 on both sides between the segments are always face-contact-bonded to the adjacent segments from the beginning, and the adjacent segments are firmly tightened to change with time. If there is a gap between adjacent segments, etc. and there is water leakage, the volume will swell three times and the tightening strength will be increased to temporarily stop water, and if the water leakage touches the high water swellable seal member, The water-swellable seal member is larger than the seal members 1 on both sides and expands five times in volume to close the voids and act as a secondary water stop. In addition, the low-swelling seal members on both sides act to prevent the high-water-swelling seal members from bulging out.
低膨潤性シール部材２、２と高水膨潤性シール部材１の
山頂部が隣接セグメントの継手面に接し、隣接セグメン
トを強固に締めつけることができるように作用する。The peaks of the low swelling seal members 2 and 2 and the high water swelling seal member 1 contact the joint surface of the adjacent segment, and act so that the adjacent segment can be firmly tightened.
なお、本考案は、上述した実施例に限定されるものでな
く、本考案の要旨を変更しない範囲での変形実施可能な
ことは明らかである。因みに、第３図（ａ）に示すよう
に、両側部または一方側部の低水膨潤性シール部材２の
端部側横幅方向に高水膨潤性シール部材１を介して低水
膨潤性シール部材２を一個または複数個連接して重合一
体化した構成としてもよい。そして、この構成の場合
は、より好ましいシール効果を得ることができる。さら
に、第３図（ｂ）に示すように、両側部の低水膨潤性シ
ール部材を、その断面形状が、外側方向に窪む弧状に形
成するようにした構成としてもよい。そして、この構成
の場合、セグメント継手面に対する引っ掛かり作用を奏
させて、横ずれを防止できるという利点を有する。ま
た、該弧状の部材を複数個並列に配置して引っ掛かり作
用を向上させるようにしてもよく、更に弧状の代わりに
『リブ』状の構成としてもよい。It should be noted that the present invention is not limited to the above-mentioned embodiments, and it is obvious that the present invention can be modified and implemented without changing the gist of the present invention. Incidentally, as shown in FIG. 3 (a), the low water swelling seal member 1 is disposed in the lateral width direction on the end side of the low water swelling seal member 2 on both sides or one side. One or a plurality of 2 may be connected and polymerized and integrated. Further, in the case of this configuration, a more preferable sealing effect can be obtained. Further, as shown in FIG. 3 (b), the low water swelling seal members on both sides may be formed so that the cross-sectional shape thereof is an arc shape which is recessed outward. Further, in the case of this configuration, there is an advantage that the segment joint surface can be caught and the lateral displacement can be prevented. In addition, a plurality of the arc-shaped members may be arranged in parallel to improve the catching action, and a “rib” -shaped configuration may be used instead of the arc-shaped members.
以上の記載より明らかなように、本考案の目地シール材
によれば、中央部の高水膨潤性シール部材の上端面が両
側部の低水膨潤性シール材の上端面より同じか若しくは
下方部位に位置するので、セグメント間で弾性力の強い
低水膨潤性シール材で締付・保持され、漏水が生じた場
合、高水膨潤性シール部材の膨潤によって、その締付・
保持状態が強化され隣接セグメント間の結合強度を一層
強固にでき、そのシール効果を向上させることかできる
という効果を有する。As is clear from the above description, according to the joint seal material of the present invention, the upper end surface of the central high water swelling seal member is the same as or lower than the upper end surfaces of the low water swellable seal materials on both sides. Since it is located at, it is tightened and held by the low water swelling seal material with strong elasticity between the segments, and if water leakage occurs, the tightening and
The holding state is reinforced, the bonding strength between the adjacent segments can be further strengthened, and the sealing effect can be improved.
また、本考案の目地シール材によれば、セグメント間で
高水膨潤性シール部材は漏水のない当初においては圧縮
締付の必要がないので、シール材の強度の低下を軽減で
きるという効果を有する。Further, according to the joint sealant of the present invention, since the high water swellable seal member between the segments does not need to be compression-tightened at the beginning when there is no water leakage, there is an effect that a decrease in strength of the sealant can be reduced. .
第１図は本考案の一実施例を示す横断面図、第２図は取
付状態を示す説明図、第３図（ａ）（ｂ）は他の実施例
の横断面図、第４図は従来例を示す横断面図である。 １……高水膨潤性シール部材、２……低水膨潤性シール
部材FIG. 1 is a cross sectional view showing an embodiment of the present invention, FIG. 2 is an explanatory view showing a mounting state, FIGS. 3 (a) and 3 (b) are cross sectional views of other embodiments, and FIG. It is a cross-sectional view showing a conventional example. 1 ... High water swelling seal member, 2 ... Low water swelling seal member
Claims (1)
介在させ、該高水膨潤性シール部材の両側部に低水膨潤
性シール部材を配設し、該高水膨潤性シール部材と低水
膨潤性シール部材を横幅方向に重合一体化し、かつ該高
水膨潤性シール部材の上面を波形状に形成し、該上面山
部における厚みｈ１と低水膨潤性シール部材の厚みｈ２
とを、ｈ１≦ｈ２の関係にしたことを特徴とする目地シ
ール材。1. A high water swelling seal member is interposed in the middle portion in the widthwise direction, and low water swelling seal members are arranged on both sides of the high water swelling seal member. The low water swellable seal member is polymerized and integrated in the lateral direction, and the upper surface of the high water swellable seal member is formed into a corrugated shape, and the thickness h 1 of the upper surface mountain portion and the thickness h 2 of the low water swellable seal member are formed.
And a relationship of h 1 ≦ h 2 is satisfied, a joint sealing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988058857U JPH0626637Y2 (en) | 1988-04-30 | 1988-04-30 | Joint sealant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988058857U JPH0626637Y2 (en) | 1988-04-30 | 1988-04-30 | Joint sealant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01164400U JPH01164400U (en) | 1989-11-16 |
| JPH0626637Y2 true JPH0626637Y2 (en) | 1994-07-20 |
Family
ID=31284654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988058857U Expired - Lifetime JPH0626637Y2 (en) | 1988-04-30 | 1988-04-30 | Joint sealant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0626637Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210123379A (en) * | 2019-02-11 | 2021-10-13 | 피피지 인더스트리즈 오하이오 인코포레이티드 | How to make a chemical resistant sealing component |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1162036A (en) * | 1997-08-25 | 1999-03-05 | Nhk Spring Co Ltd | Sealing material and usage thereof |
| JP6675399B2 (en) | 2014-11-18 | 2020-04-01 | パラフォイル・デザイン・アンド・エンジニアリング・プライベイト・リミテッドＰａｒａｆｏｉｌ Ｄｅｓｉｇｎ ＆ Ｅｎｇｉｎｅｅｒｉｎｇ Ｐｔｅ Ｌｔｄ | Flood barrier |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5576257A (en) * | 1978-12-05 | 1980-06-09 | Fuso Gomme Kogyo Kk | Packing |
| JPS60159099U (en) * | 1984-03-28 | 1985-10-23 | シ−アイ化成株式会社 | Joint sealing material |
| JPS6216317A (en) * | 1985-07-02 | 1987-01-24 | 株式会社 共和 | Bundling device for vegetable, etc. |
-
1988
- 1988-04-30 JP JP1988058857U patent/JPH0626637Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210123379A (en) * | 2019-02-11 | 2021-10-13 | 피피지 인더스트리즈 오하이오 인코포레이티드 | How to make a chemical resistant sealing component |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01164400U (en) | 1989-11-16 |
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