JP3298100B2 - Waterproof segment for shield tunnel and its construction method - Google Patents
Waterproof segment for shield tunnel and its construction methodInfo
- Publication number
- JP3298100B2 JP3298100B2 JP04840497A JP4840497A JP3298100B2 JP 3298100 B2 JP3298100 B2 JP 3298100B2 JP 04840497 A JP04840497 A JP 04840497A JP 4840497 A JP4840497 A JP 4840497A JP 3298100 B2 JP3298100 B2 JP 3298100B2
- Authority
- JP
- Japan
- Prior art keywords
- segment
- waterproof
- notch
- waterproof sheet
- shield 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.)
- Expired - Fee Related
Links
- 238000010276 construction Methods 0.000 title description 12
- 239000000945 filler Substances 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 8
- 239000010865 sewage Substances 0.000 description 8
- 238000004078 waterproofing Methods 0.000 description 8
- 239000004567 concrete Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 102200124760 rs587777729 Human genes 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/086—Methods of making concrete lining segments
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/385—Sealing means positioned between adjacent lining members
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主として水路用シ
ールドトンネルに使用される防水セグメント及びその施
工方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof segment mainly used for a shield tunnel for a waterway and a method for constructing the waterproof segment.
【０００２】[0002]
【従来の技術】シールド工法でトンネルを構築する場
合、地山に貫入されたシールドで掘削を進めながらその
テール部でセグメントをリング状に組み立てていくが、
推進時のジャッキ反力の不均一や曲線施工時の片押しな
どによってセグメントを完全なリングに組み立てること
は困難であり、また、セグメント外面に作用する土圧や
水圧等の影響によってセグメント自体に変形が生じる。2. Description of the Related Art When constructing a tunnel by a shield method, segments are assembled in a ring shape at the tail portion while excavating with a shield penetrating the ground.
It is difficult to assemble the segment into a complete ring due to uneven jack reaction force during propulsion or one-sided pushing during curve construction, and the segment itself is deformed by the influence of earth pressure and water pressure acting on the outer surface of the segment Occurs.
【０００３】したがって、セグメントのピース間やセグ
メントリング間に若干の隙間が生じることは避けられ
ず、かかる隙間を介した漏水を防止するための防水工が
不可欠となる。特に、下水や汚水を流すための水路の場
合には、周辺地盤からの地下水の流入に加えて、汚水等
が周辺地盤に漏出することも懸念されるため、防水対策
には特に配慮する必要がある。[0003] Therefore, it is inevitable that a slight gap is formed between the pieces of the segment or between the segment rings, and a waterproofing work for preventing water leakage through such a gap is indispensable. In particular, in the case of waterways for draining sewage and sewage, in addition to the inflow of groundwater from the surrounding ground, there is a concern that sewage, etc. may leak to the surrounding ground. is there.
【０００４】このような防水工としては、セグメント継
手面にシール材を接着するとともに、さらにセグメント
内面にセグメントの補強や防食を兼ねた現場打ちコンク
リートを施工するのが一般的である。[0004] As such a waterproofing work, it is common to bond a sealant to the surface of the segment joint, and further, to cast a cast-in-place concrete on the inner surface of the segment, which also serves as reinforcement and corrosion prevention of the segment.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、二次覆
工として現場打ちコンクリートを施工するにあたって
は、シールド掘進工が完了するまで待たねばならず、ト
ンネル全体の工期が非常に長くなってしまうという問題
を生じていた。However, when constructing cast-in-place concrete as secondary lining, it is necessary to wait until the shield excavation is completed, and the construction period of the entire tunnel becomes very long. Was occurring.
【０００６】本発明は、上述した事情を考慮してなされ
たもので、短工期でも十分な防水性を確保することが可
能なシールドトンネル用防水セグメント及びその施工方
法を提供することを目的とする。The present invention has been made in consideration of the above circumstances, and has as its object to provide a waterproof segment for a shield tunnel capable of ensuring sufficient waterproofness even in a short construction period, and a method for constructing the waterproof segment. .
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、本発明のシールドトンネル用防水セグメントは請求
項１に記載したように、セグメント本体とその内面に取
り付けられた防水シートとから構成されるシールドトン
ネル用防水セグメントであって、前記セグメント本体の
内面側縁部に切り欠きを形成するとともに、前記防水シ
ートを該防水シートの縁部が前記切り欠き内にはみ出す
ように取り付けてなり、前記切り欠きを、前記防水シー
トの縁部が押し込まれた状態で該切り欠き内を所定の充
填材で充填して固化させることで、隣接する２つの前記
セグメント本体に取り付けられた前記各防水シートを前
記充填材を介して一体に接合できるように構成したもの
である。In order to achieve the above object, a waterproof segment for a shield tunnel according to the present invention comprises a segment body and a waterproof sheet attached to the inner surface of the segment body. A waterproof segment for a shield tunnel, wherein a notch is formed at an inner side edge of the segment body, and the waterproof sheet is attached so that an edge of the waterproof sheet protrudes into the notch. The notch is filled with a predetermined filler in a state in which the edge of the waterproof sheet is pushed in and solidified, so that each of the waterproof sheets attached to two adjacent segment main bodies is removed. It is configured such that it can be integrally joined via a filler.
【０００８】また、本発明のシールドトンネル用防水セ
グメントは、前記防水シートを繊維補強シートとしたも
のである。In the waterproof segment for a shield tunnel according to the present invention, the waterproof sheet is a fiber reinforced sheet.
【０００９】また、本発明のシールドトンネル用防水セ
グメントは、前記切り欠きの最深部に半円筒状の溜まり
部分を形成したものである。また、本発明のシールドト
ンネル用防水セグメントは、前記切り欠きを奥に向かっ
て断面幅が大きくなるように形成したものである。ま
た、本発明に係るシールドトンネル用防水セグメントの
施工方法は請求項５に記載したように、セグメント本体
の内面に防水シートが取り付けられたセグメントをトン
ネル地山の内側所定位置に隣接配置し、前記防水シート
の縁部を前記セグメント本体若しくは該セグメント本体
に隣接配置されたセグメント本体の内面側縁部に形成さ
れた切り欠き内に押し込み、かかる状態で該切り欠き内
に所定の充填材を充填して固化させるものである。Further, in the waterproof segment for a shield tunnel of the present invention, a semi-cylindrical pool portion is formed at the deepest portion of the notch. Further, in the waterproof segment for a shield tunnel according to the present invention, the notch is formed so that a cross-sectional width increases toward the back. In the method for constructing a waterproof segment for a shield tunnel according to the present invention, as described in claim 5, a segment in which a waterproof sheet is attached to an inner surface of a segment body is disposed adjacent to a predetermined position inside a tunnel ground, The edge of the waterproof sheet is pushed into the notch formed on the inner surface side edge of the segment main body or the segment main body arranged adjacent to the segment main body, and in this state, a predetermined filler is filled in the notch. To solidify.
【００１０】また、本発明に係るシールドトンネル用防
水セグメントの施工方法は、前記防水シートの縁部を前
記切り欠き内で溶融して前記充填材とするものである。[0010] In the method for constructing a waterproof segment for a shield tunnel according to the present invention, an edge portion of the waterproof sheet is melted in the notch to form the filler.
【００１１】本発明のシールドトンネル用防水セグメン
ト及びその施工方法においては、セグメント本体の内面
に取り付けられた防水シートの縁部を該セグメント本体
若しくはそれに隣接して配置されたセグメント本体の内
面側縁部に形成された切り欠き内に押し込み、かかる状
態で切り欠き内を所定の充填材で充填し固化させる。In the waterproof segment for a shield tunnel and the method for constructing the same according to the present invention, the edge of the waterproof sheet attached to the inner surface of the segment main body is formed by the inner side edge of the segment main body or the segment main body arranged adjacent thereto. Is pressed into the notch formed in the above, and in this state, the inside of the notch is filled with a predetermined filler and solidified.
【００１２】すると、隣接する２つのセグメント本体に
取り付けられた各防水シートは、切り欠き内の充填材を
介して一体に接合されるとともに、該充填材によってセ
グメント間に生じていた隙間も塞がれる。Then, the waterproof sheets attached to the two adjacent segment bodies are integrally joined via the filler in the notch, and the gap formed between the segments is also closed by the filler. It is.
【００１３】ここで、防水シートの材料は任意である
が、繊維補強シートで構成しておけば、引張強度が向上
し、内圧が作用する水路トンネルに最適な構成となる。Here, the material of the waterproof sheet is arbitrary, but if it is made of a fiber reinforced sheet, the tensile strength is improved and the structure becomes the most suitable for a water channel tunnel in which internal pressure acts.
【００１４】防水シートの取付け形態については、例え
ば、接着や融着によってセグメント本体の内面に貼り付
けてもよいし、裏面に定着用突起が形成された防水シー
トをセグメント製作用の型枠内面に予め貼り付けてお
き、かかる状態で型枠内にコンクリートを打設すること
によって防水シートの取付けを行うようにしてもよい。The waterproof sheet may be attached to the inner surface of the segment body by, for example, adhesion or fusion, or a waterproof sheet having a fixing projection formed on the back surface may be attached to the inner surface of the mold for forming the segment. The waterproof sheet may be attached by attaching the sheet in advance and placing concrete in the mold in this state.
【００１５】切り欠きについては、隣接するセグメント
本体の両方に形成してもよいが、場合によっては、いず
れか一方にだけ形成してもよい。The notches may be formed in both of the adjacent segment bodies, but may be formed in only one of them in some cases.
【００１６】充填材はどのような材料でもよいが、防水
シートの縁部を切り欠き内で溶融して充填材とすれば、
充填材を別途準備する必要がなくなるので、施工がやり
やすくなるとともに、防水シートと充填材とが同一材料
となることによって防水シートと充填材との一体性、ひ
いては水密性や引張強度が向上する。The filler may be any material, but if the edge of the waterproof sheet is melted in the notch to form the filler,
Since it is not necessary to prepare a filler separately, the construction becomes easier, and the waterproof sheet and the filler are made of the same material, so that the integrity of the waterproof sheet and the filler, and thus the watertightness and tensile strength are improved. .
【００１７】[0017]
【発明の実施の形態】以下、本発明に係るシールドトン
ネル用防水セグメント及びその施工方法の実施の形態に
ついて、添付図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a waterproof segment for a shield tunnel and a method for constructing the same according to the present invention will be described below with reference to the accompanying drawings.
【００１８】図１(a)は、本実施形態に係るシールドト
ンネル用防水セグメントを全体斜視図で示したものであ
る。同図でわかるように、本実施形態のシールドトンネ
ル用防水セグメント１は、鉄筋コンクリート製のセグメ
ント本体２の内面に防水シート４を取り付けて構成され
るが、該防水シートは、同図(b)でよくわかるように、
その縁部がセグメント本体２の内面側縁部に形成された
切り欠き３内にはみ出すように取り付けてある。FIG. 1A is an overall perspective view of a waterproof segment for a shield tunnel according to the present embodiment. As can be seen in the figure, the waterproof segment 1 for a shield tunnel of the present embodiment is configured by attaching a waterproof sheet 4 to the inner surface of a segment body 2 made of reinforced concrete. The waterproof sheet is as shown in FIG. As you can see,
The edge is attached so as to protrude into a notch 3 formed on the inner side edge of the segment body 2.
【００１９】切り欠き３は、セグメント本体２の周縁に
添って形成してあり、その断面は、全体としてはセグメ
ント本体２の角を面取りしたような形状をなすが、その
最深部には半円筒状の溜まり部分５を形成してあり、後
述する充填材が空隙を残すことなく最深部まで良好に充
填されるとともに、溜まり部分５内で固化した充填材が
該溜まり部分で引っかかって防水シート４の引抜きが防
止される、いわば係止爪の作用をする。The notch 3 is formed along the peripheral edge of the segment main body 2 and has a cross section having a shape in which the corner of the segment main body 2 is chamfered as a whole. And a filling material to be described later is satisfactorily filled up to the deepest portion without leaving a void, and the filler solidified in the collecting portion 5 is caught by the collecting portion and the waterproof sheet 4 is formed. The pull-out is prevented, so to say, acts as a locking claw.
【００２０】防水シート４は、引張強度の高いもの、例
えば、高密度ポリエチレンシートなどを用いることによ
って内圧に抵抗できるようにしておくのがよい。ここ
で、特に、防水シート４を繊維補強シートで形成してお
けば、防水シートの引張強度が格段に向上するので、内
圧が作用する水路トンネルには最適な構成となる。The waterproof sheet 4 is preferably made of a material having a high tensile strength, for example, a high-density polyethylene sheet so as to be able to resist internal pressure. Here, in particular, if the waterproof sheet 4 is formed of a fiber reinforced sheet, the tensile strength of the waterproof sheet is significantly improved, so that the structure is optimal for a water channel tunnel in which internal pressure acts.
【００２１】防水シート４をセグメント本体２の内面に
取り付けるにあたっては、例えば、先だって製作された
セグメント本体２の内面に防水シート４を接着、融着等
の手段で貼り付けるようにすればよい。When attaching the waterproof sheet 4 to the inner surface of the segment main body 2, for example, the waterproof sheet 4 may be attached to the inner surface of the previously manufactured segment main body 2 by means such as adhesion or fusion.
【００２２】本実施形態のシールドトンネル用防水セグ
メント１を施工する手順としては、まず、かかるシール
ドトンネル用防水セグメント１、１を図２(a)のように
トンネル地山の内側所定位置に隣接配置する。The procedure for installing the waterproof segment 1 for a shield tunnel according to the present embodiment is as follows. First, the waterproof segment 1, 1 for a shield tunnel is placed adjacent to a predetermined position inside the ground of the tunnel as shown in FIG. I do.
【００２３】次に、同図(b)に示すように、セグメント
本体２の裏面に取り付けられた防水シート４の縁部を切
り欠き３内に押し込む。この場合、必要に応じて防水シ
ート４の縁部裏面に接着剤を塗布し、該縁部を切り欠き
３の内面に貼り付けるようにするのがよい。Next, as shown in FIG. 2B, the edge of the waterproof sheet 4 attached to the back surface of the segment body 2 is pushed into the notch 3. In this case, an adhesive is preferably applied to the back surface of the edge of the waterproof sheet 4 as necessary, and the edge is preferably attached to the inner surface of the notch 3.
【００２４】次に、防水シート４の縁部を切り欠き３内
に押し込んだ状態で、同図(c)に示すように切り欠き３
内に充填材１１を充填して固化させる。ここで、充填材
１１は、母材である防水シート４と同等以上の引張強度
を有し、なおかつ母材である防水シート４との接着性が
高いもの、例えば、ポリエチレン系材料を使用すること
によって、内圧に抵抗できるようにしておくのが望まし
い。Next, with the edge of the waterproof sheet 4 being pushed into the notch 3, as shown in FIG.
The inside is filled with the filler 11 and solidified. Here, the filler 11 has a tensile strength equal to or higher than that of the waterproof sheet 4 as the base material, and has high adhesiveness to the waterproof sheet 4 as the base material, for example, a polyethylene-based material is used. It is desirable to be able to resist the internal pressure.
【００２５】このようにすると、隣接する２つのセグメ
ント本体２、２に取り付けられた各防水シート４、４
は、切り欠き３内の充填材１１を介して一体に接合され
るとともに、該充填材によってセグメント間に生じてい
た隙間も塞がれる。In this way, each of the waterproof sheets 4, 4 attached to the two adjacent segment bodies 2, 2
Are integrally joined via the filler 11 in the notch 3, and the filler also closes the gap created between the segments.
【００２６】以上説明したように、本実施形態に係るシ
ールドトンネル用防水セグメント及びその施工方法によ
れば、防水シート４の縁部をセグメント本体２に形成さ
れた切り欠き３内に押し込み、しかる後に該切り欠き内
に充填材１１を充填して固化させるようにしたので、隣
接する２つのセグメント本体２、２に取り付けられた別
々の防水シート４、４は、充填材１１を介して切り欠き
３内にて一体に接合されるとともに、セグメント１、１
間に生じている隙間も充填材１１で塞がれる。As described above, according to the waterproofing segment for the shield tunnel and the method of constructing the waterproofing segment according to the present embodiment, the edge of the waterproofing sheet 4 is pushed into the notch 3 formed in the segment body 2 and thereafter Since the filler 11 is filled in the notch and solidified, the separate waterproof sheets 4 and 4 attached to the two adjacent segment bodies 2 and 2 can be separated by the notch 3 through the filler 11. Are joined together within the segment and the segments 1, 1
The gaps between them are also closed by the filler 11.
【００２７】したがって、きわめて水密性の高い防水工
をセグメント１の内面に施すことが可能となり、例えば
水路トンネルに適用した場合には、二次覆工として鉄筋
コンクリートをセグメント内面に構築せずとも、トンネ
ル内を流れる下水や汚水の漏出を未然に防止することが
可能となり、かくして、所定の防水性を確保しつつシー
ルドトンネル工事の工期を大幅に短縮することが可能と
なる。Therefore, it is possible to apply a very watertight waterproofing work to the inner surface of the segment 1. For example, when applied to a waterway tunnel, it is possible to construct a tunnel without using reinforced concrete as a secondary lining on the inner surface of the segment. It is possible to prevent the leakage of sewage and sewage flowing through the inside, and thus it is possible to greatly shorten the construction period of the shield tunnel construction while maintaining the predetermined waterproofness.
【００２８】また、防水シート４、４を接合する際にそ
れらの縁部同士を重ねていないため、セグメント内面に
凹凸が生じることがなくなり、水路トンネルに適用した
場合には、下水や汚水の流れが妨げられるおそれがなく
なるとともに、下水等の流れによって防水シートの縁部
が剥がれるといった事態も未然に防止することができ
る。Since the edges of the waterproof sheets 4 and 4 are not overlapped with each other when the waterproof sheets 4 and 4 are joined, unevenness does not occur on the inner surface of the segment. Can be prevented, and a situation in which the edge of the waterproof sheet peels off due to the flow of sewage or the like can be prevented.
【００２９】また、セグメント本体の内面に防水シート
を予め工場にて取り付けて防水セグメントとしたので、
トンネル施工現場においては、防水シートの縁部を切り
欠き内に押し込んで充填材を充填するだけでよくなり、
トンネル施工現場での作業が省力化される。Also, since a waterproof sheet is previously attached to the inner surface of the segment body at the factory to form a waterproof segment,
At the tunnel construction site, simply press the edge of the waterproof sheet into the notch and fill the filler,
Labor saving at the tunnel construction site.
【００３０】また、二次覆工が不要になる分だけ、トン
ネル内の有効断面積が増加するので、水路設計が有利に
なるという効果も奏する。Further, the effective cross-sectional area in the tunnel is increased by the amount that the secondary lining is not required, so that there is an effect that the waterway design becomes advantageous.
【００３１】本実施形態では、セグメント本体の角を斜
めに切って切り欠き３としたが、切り欠き３の断面形状
については、隣接する２つのセグメント本体２、２に取
り付けられた防水シート４、４を折り込んで充填材１１
を充填できるのであれば、どのような断面形状でもよ
い。例えば、切り欠き３に代えて図３に示す切り欠き３
ａ、３ｂ、３ｃを採用することができる。なお、切り欠
き３ｃでは、奥に向かって断面幅が大きくなるように形
成してあるので、切り欠き３ｃ内で固化した充填材が該
切り欠き内で引っかかることによって、防水シート４の
剥がれやめくれが防止されるという別の効果も奏する。In the present embodiment, the corners of the segment bodies are cut obliquely to form the notches 3. However, the cross-sectional shape of the notches 3 is similar to that of the waterproof sheet 4 attached to the two adjacent segment bodies 2, 2. 4 and the filler 11
Any cross-sectional shape may be used as long as it can be filled. For example, the notch 3 shown in FIG.
a, 3b and 3c can be adopted. Since the notch 3c is formed so that the cross-sectional width increases toward the back, the filler solidified in the notch 3c is caught in the notch, whereby the waterproof sheet 4 is prevented from peeling off. Another effect is also achieved that is prevented.
【００３２】また、本実施形態では、隣接するセグメン
ト本体２、２の両方に切り欠き３を形成したが、これに
代えて図４に示すように、一方のセグメント本体２ａに
のみ切り欠き３を形成し、他方には切り欠きを省略して
もよい。かかる構成においても、上述したとほぼ同様の
作用効果を奏する。In this embodiment, the notches 3 are formed in both of the adjacent segment bodies 2, 2. However, as shown in FIG. 4, the notches 3 are formed only in one of the segment bodies 2 a. The cutout may be formed on the other side. In such a configuration, substantially the same operation and effect as described above can be obtained.
【００３３】また、本実施形態では、防水シート４を接
着、融着等の手段でセグメント本体２の内面に貼り付け
るようにしたが、これに代えて、セグメント本体を製作
する際、該セグメント本体の型枠内面に定着突起が裏面
に形成された防水シートを予め貼り付けておき、しかる
後に型枠内にコンクリートを打設することによって防水
シートを取り付けるようにしてもよい。In the present embodiment, the waterproof sheet 4 is attached to the inner surface of the segment body 2 by means such as adhesion or fusion. Alternatively, when the segment body is manufactured, A waterproof sheet having fixing protrusions formed on the back surface may be attached to the inner surface of the mold in advance, and then the waterproof sheet may be attached by pouring concrete into the mold.
【００３４】また、本実施形態では、充填材１１として
例えばポリエチレン系材料を使用するものとしたが、こ
れに代えて防水シート４と同一の材料を充填材とし、該
充填材を切り欠き内に溶かし込むようにしてもよい。か
かる構成によれば、防水シート４と充填材とが同一材料
となることによって両者の一体性、ひいては水密性や引
張強度が向上するという別の効果も奏する。In the present embodiment, for example, a polyethylene-based material is used as the filler 11, but instead, the same material as the waterproof sheet 4 is used as the filler, and the filler is inserted into the notch. You may make it melt | dissolve. According to such a configuration, since the waterproof sheet 4 and the filler are made of the same material, another effect of improving the integration of the two and, eventually, the water tightness and the tensile strength is also exerted.
【００３５】また、本実施形態では、充填材１１を防水
シート４とは別に準備するものとしたが、かかる充填材
を、防水シート４の縁部を切り欠き３内で溶融すること
によって生成するようにしてもよい。In this embodiment, the filler 11 is prepared separately from the waterproof sheet 4. However, such a filler is generated by melting the edge of the waterproof sheet 4 in the notch 3. You may do so.
【００３６】すなわち、まずは上述の実施形態と同様に
して、シールドトンネル用防水セグメント１、１をトン
ネル地山の内側所定位置に隣接配置し、しかる後に、セ
グメント本体２の裏面に取り付けられた防水シート４の
縁部を切り欠き３内に押し込む（図５(a)〜(b)）。That is, first, the waterproof segments 1 and 1 for the shield tunnel are arranged adjacent to a predetermined position inside the ground of the tunnel in the same manner as in the above-described embodiment, and thereafter, the waterproof sheet attached to the back surface of the segment body 2. 4 is pushed into the notch 3 (FIGS. 5 (a) and 5 (b)).
【００３７】次に、かかる状態で該切り欠き内の防水シ
ート４の縁部を溶融して充填材２１とし、次いで、該充
填材を固化させる（図５(c)）。Next, in this state, the edge of the waterproof sheet 4 in the notch is melted to form the filler 21, and then the filler is solidified (FIG. 5 (c)).
【００３８】このような構成においても、隣接する２つ
のセグメント本体２、２に取り付けられた各防水シート
４、４は、切り欠き３内の充填材２１を介して一体に接
合されるとともに、該充填材によってセグメント間に生
じていた隙間も塞がれるので、上述の実施形態とほぼ同
様の効果を奏するほか、防水シート４と充填材２１とが
同一材料となることによって両者の一体性が向上すると
ともに、充填材を別途準備する必要がなくなるので施工
がやりやすくなるという別の効果も奏する。In such a structure, the waterproof sheets 4, 4 attached to the two adjacent segment bodies 2, 2 are integrally joined via the filler 21 in the notch 3, and Since the gap formed between the segments is closed by the filler, the same effect as that of the above-described embodiment can be obtained. In addition, since the waterproof sheet 4 and the filler 21 are made of the same material, the integrity of both is improved. In addition, since there is no need to separately prepare a filler, there is another effect that the construction is facilitated.
【００３９】また、本実施形態及び上述した各変形例に
おいては、水路トンネルへの適用性を考慮して防水シー
トや充填材を引張強度の高いものとしたが、例えば通信
ケーブルが敷設されるトンネルの場合には、引張強度の
高い防水シートや充填材を使用する必要はない。In this embodiment and each of the above-mentioned modifications, the waterproof sheet or the filler is made to have a high tensile strength in consideration of applicability to a channel tunnel. For example, a tunnel in which a communication cable is laid is used. In this case, it is not necessary to use a waterproof sheet or a filler having a high tensile strength.
【００４０】[0040]
【発明の効果】以上述べたように、請求項１に係る本発
明のシールドトンネル用防水セグメントによれば、きわ
めて水密性の高い防水工をセグメント内面に施すことが
可能となるので、二次覆工として鉄筋コンクリートをセ
グメント内面に構築せずとも、防水性の高いシールドト
ンネルを短工期に施工することが可能となる。As described above, according to the waterproof segment for a shield tunnel according to the first aspect of the present invention, it is possible to apply waterproofing work having extremely high watertightness to the inner surface of the segment. It is possible to construct a highly waterproof shield tunnel in a short period of time without having to construct reinforced concrete on the inner surface of the segment.
【００４１】また、請求項２に係る本発明のシールドト
ンネル用防水セグメントによれば、防水シートの引張強
度が向上するので、水路トンネルを流れる下水等の内圧
によって防水シートに引張応力が作用しても、該シート
の破損やそれに起因する下水等の漏出をほぼ完全に防止
することができるという別の効果も奏する。According to the waterproof segment for a shield tunnel according to the second aspect of the present invention, since the tensile strength of the waterproof sheet is improved, a tensile stress acts on the waterproof sheet by internal pressure of sewage or the like flowing through the waterway tunnel. This also has another effect that breakage of the sheet and leakage of sewage or the like resulting from the damage can be almost completely prevented.
【００４２】また、請求項５に係る本発明のシールドト
ンネル用防水セグメントの施工方法によれば、きわめて
水密性の高い防水工をセグメント内面に施すことが可能
となるので、二次覆工として鉄筋コンクリートをセグメ
ント内面に構築せずとも、防水性の高いシールドトンネ
ルを短工期に施工することができる。According to the method for constructing a waterproof segment for a shield tunnel according to the fifth aspect of the present invention, it is possible to apply a waterproofing work having extremely high watertightness to the inner surface of the segment. Shield tunnels with high waterproofness can be constructed in a short period of time without having to construct the inside of the segment.
【００４３】また、請求項６に係る本発明のシールドト
ンネル用防水セグメントの施工方法によれば、防水シー
トと充填材とが同一材料となることによって両者の一体
性が向上するとともに、充填材を別途準備する必要がな
くなるので施工がやりやすくなるという別の効果も奏す
る。According to the construction method of the waterproof segment for a shield tunnel of the present invention according to claim 6, since the waterproof sheet and the filler are made of the same material, the integration of the waterproof sheet and the filler is improved, and the filler is used. There is another effect that construction becomes easy because there is no need to prepare separately.
【００４４】[0044]
【図１】本実施形態に係るシールドトンネル用防水セグ
メントの図であり、(a)は全体斜視図、(b)は詳細断面
図。FIG. 1 is a view of a waterproof segment for a shield tunnel according to the present embodiment, wherein (a) is an overall perspective view and (b) is a detailed sectional view.
【図２】本実施形態に係るシールドトンネル用防水セグ
メントの施工方法を示した断面図。FIG. 2 is a cross-sectional view showing a method of constructing a waterproof segment for a shield tunnel according to the embodiment.
【図３】本実施形態の変形例に係るシールドトンネル用
防水セグメントを示した詳細断面図。FIG. 3 is a detailed sectional view showing a waterproof segment for a shield tunnel according to a modification of the embodiment.
【図４】本実施形態の変形例に係るシールドトンネル用
防水セグメントの施工方法を示した断面図。FIG. 4 is a cross-sectional view illustrating a method of constructing a waterproof segment for a shield tunnel according to a modification of the embodiment.
【図５】本実施形態の別の変形例に係るシールドトンネ
ル用防水セグメントの施工方法を示した断面図。FIG. 5 is a cross-sectional view showing a method of constructing a waterproof segment for a shield tunnel according to another modification of the present embodiment.
１ シールドトンネル用防水セグ
メント ２、２ａ、２ｂ セグメント本体 ３、３ａ、３ｂ、３ｃ 切り欠き ４ 防水シート １１、２１ 充填材1 Waterproof segment for shield tunnel 2, 2a, 2b Segment body 3, 3a, 3b, 3c Notch 4 Waterproof sheet 11, 21 Filler
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−187298（ＪＰ，Ａ) 実開 平３−86197（ＪＰ，Ｕ) 実開 平３−86198（ＪＰ，Ｕ) 実開 平２−80199（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) E21D 11/08 E21D 11/04 E21D 11/38 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-187298 (JP, A) JP-A-3-86197 (JP, U) JP-A-3-86198 (JP, U) JP-A-2-86 80199 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) E21D 11/08 E21D 11/04 E21D 11/38
Claims (6)
れた防水シートとから構成されるシールドトンネル用防
水セグメントであって、前記セグメント本体の内面側縁
部に切り欠きを形成するとともに、前記防水シートを該
防水シートの縁部が前記切り欠き内にはみ出すように取
り付けてなり、前記切り欠きを、前記防水シートの縁部
が押し込まれた状態で該切り欠き内を所定の充填材で充
填して固化させることで、隣接する２つの前記セグメン
ト本体に取り付けられた前記各防水シートを前記充填材
を介して一体に接合できるように構成したことを特徴と
するシールドトンネル用防水セグメント。1. A waterproof segment for a shield tunnel comprising a segment body and a waterproof sheet attached to an inner surface thereof, wherein a notch is formed at an inner side edge of the segment body, and the waterproof sheet is formed. The waterproof sheet is attached so that an edge thereof protrudes into the notch, and the notch is filled with a predetermined filler in the state where the edge of the waterproof sheet is pushed in and solidified. The waterproof segment for a shield tunnel, wherein each waterproof sheet attached to two adjacent segment bodies can be integrally joined via the filler.
請求項１記載のシールドトンネル用防水セグメント。2. The waterproof segment for a shield tunnel according to claim 1, wherein the waterproof sheet is a fiber reinforced sheet.
り部分を形成した請求項１記載のシールドトンネル用防
水セグメント。3. The waterproof segment for a shield tunnel according to claim 1, wherein a semicylindrical pool portion is formed at a deepest portion of the notch.
きくなるように形成した請求項１記載のシールドトンネ
ル用防水セグメント。4. The waterproof segment for a shield tunnel according to claim 1, wherein the notch is formed so that a cross-sectional width increases toward a depth.
り付けられたセグメントをトンネル地山の内側所定位置
に隣接配置し、前記防水シートの縁部を前記セグメント
本体若しくは該セグメント本体に隣接配置されたセグメ
ント本体の内面側縁部に形成された切り欠き内に押し込
み、かかる状態で該切り欠き内に所定の充填材を充填し
て固化させることを特徴とするシールドトンネル用防水
セグメントの施工方法。5. A segment in which a waterproof sheet is attached to an inner surface of a segment main body, is disposed adjacent to a predetermined position inside a tunnel ground, and an edge of the waterproof sheet is disposed adjacent to the segment main body or the segment main body. A method for constructing a waterproof segment for a shield tunnel, characterized in that a notch formed in an inner side edge of a main body is pushed into the notch, and a predetermined filler is filled and solidified in the notch in such a state.
で溶融して前記充填材とする請求項５記載のシールドト
ンネル用防水セグメントの施工方法。6. The method for constructing a waterproof segment for a shield tunnel according to claim 5, wherein an edge portion of the waterproof sheet is melted in the notch to be used as the filler.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04840497A JP3298100B2 (en) | 1997-02-17 | 1997-02-17 | Waterproof segment for shield tunnel and its construction method |
| KR1019970070021A KR19980070176A (en) | 1997-02-17 | 1997-12-17 | Waterproof segment for shield tunnel and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04840497A JP3298100B2 (en) | 1997-02-17 | 1997-02-17 | Waterproof segment for shield tunnel and its construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10227197A JPH10227197A (en) | 1998-08-25 |
| JP3298100B2 true JP3298100B2 (en) | 2002-07-02 |
Family
ID=12802374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04840497A Expired - Fee Related JP3298100B2 (en) | 1997-02-17 | 1997-02-17 | Waterproof segment for shield tunnel and its construction method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3298100B2 (en) |
| KR (1) | KR19980070176A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000145394A (en) * | 1998-11-13 | 2000-05-26 | Ohbayashi Corp | Plastic sheet-adhered segment and its joint processing method |
| EP1722067A1 (en) * | 2005-05-13 | 2006-11-15 | IAT GmbH | Tubing segment with supports for a lining sheet |
-
1997
- 1997-02-17 JP JP04840497A patent/JP3298100B2/en not_active Expired - Fee Related
- 1997-12-17 KR KR1019970070021A patent/KR19980070176A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980070176A (en) | 1998-10-26 |
| JPH10227197A (en) | 1998-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2007077677A (en) | Construction method for underground structure | |
| JP6257814B1 (en) | Construction method of large section underground structure | |
| JP6127193B1 (en) | Construction method of large section underground structure | |
| JP3298100B2 (en) | Waterproof segment for shield tunnel and its construction method | |
| JP6062098B1 (en) | Construction method of large section underground structure | |
| JPH09217584A (en) | Pipe joint for pipe roof, watertight packing of shaft, and water cutoff method in pipe roof construction method | |
| JP3516192B2 (en) | Construction method of large section tunnel and shield machine | |
| JP3765048B2 (en) | How to build a tunnel | |
| JP3520358B2 (en) | Connection structure between horizontal shaft structure and vertical shaft structure | |
| KR200370627Y1 (en) | Frame to draw out beam | |
| JP3233859B2 (en) | Tunnel connection method | |
| JPH0310238Y2 (en) | ||
| JPH028000Y2 (en) | ||
| JP2855153B2 (en) | Cast-in-place lining method | |
| JP3128456B2 (en) | How to attach impermeable walls to gutter pipes | |
| JP2698924B2 (en) | Construction method of anticorrosion pipeline | |
| JP2000257392A (en) | Water stopping form and method for constructing tunnel using the same | |
| JP4010966B2 (en) | Barrier pipe for impermeable wall installation | |
| JPH01182498A (en) | Cut-off method for tail part in cast-in-place concrete lining process | |
| JP4446235B2 (en) | Construction method of underground wall | |
| JP3230174B2 (en) | Tunnel waterproofing method and waterproof sheet | |
| JPH03295926A (en) | Execution of underground continuous wall | |
| JP3178357B2 (en) | Construction method of large section tunnel | |
| JP2002070045A (en) | Outer peripheral wall of underground structure and its construction method | |
| JPH0227519B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20020318 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080419 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090419 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100419 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100419 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110419 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |