EP0574559B1 - Procede de prevention du deplacement d'une moulure profilee d'etancheite par rapport a un element de tunnel et moulure profilee d'etancheite produite selon ce procede - Google Patents

Procede de prevention du deplacement d'une moulure profilee d'etancheite par rapport a un element de tunnel et moulure profilee d'etancheite produite selon ce procede Download PDF

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Publication number
EP0574559B1
EP0574559B1 EP92924534A EP92924534A EP0574559B1 EP 0574559 B1 EP0574559 B1 EP 0574559B1 EP 92924534 A EP92924534 A EP 92924534A EP 92924534 A EP92924534 A EP 92924534A EP 0574559 B1 EP0574559 B1 EP 0574559B1
Authority
EP
European Patent Office
Prior art keywords
strip
layer
gasket strip
profiled
longitudinal
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
Application number
EP92924534A
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German (de)
English (en)
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EP0574559A1 (fr
Inventor
Norbert Herwegh
Jürgen DAHM
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daetwyler AG Schweizerische Kabel Gummi und Kunststoffwerke
Original Assignee
Daetwyler AG Schweizerische Kabel Gummi und Kunststoffwerke
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Application filed by Daetwyler AG Schweizerische Kabel Gummi und Kunststoffwerke filed Critical Daetwyler AG Schweizerische Kabel Gummi und Kunststoffwerke
Publication of EP0574559A1 publication Critical patent/EP0574559A1/fr
Application granted granted Critical
Publication of EP0574559B1 publication Critical patent/EP0574559B1/fr
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Expired - Lifetime legal-status Critical Current

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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
    • E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
    • E21D11/385—Sealing means positioned between adjacent lining members

Definitions

  • the invention relates to a method for producing an elastic sealing profile strip to be fixedly attached to a tunnel construction element of a type in which, after its attachment, its displacement relative to the element due to the action of frictional forces during the assembly of this or another adjacent element is prevented, said sealing profile strip having two Longitudinal sides and in their interior with channels is formed, which channels are arranged on a plane parallel to these long sides, and is also provided on its circumference with means that reduce the influence of the above-mentioned frictional forces on the fixed attachment of the sealing profile strip to the tunnel component, the an agent is formed from a layer of a material which, for this purpose, is harder than the rest of the material of the sealing profile strip, but is still elastic.
  • the invention further relates to a sealing profile strip produced by this method.
  • segments For the lining of tunnels and their vaults as well as for their reinforcement, concrete tunnel elements, so-called segments, are used. These segments are adapted to the arch-like shape of the tunnel, i.e. they are curved. For manufacturing reasons, but above all also for assembly reasons, these segments must not be too large. It is therefore necessary to have several elements lined up over the entire circumference of the tunnel cross-section. These will be like this dimensioned so that a more or less wide joint remains open at the top of the vault, into which a special, much less wide tubbing is inserted, which is also referred to as a keystone. This is wedge-shaped in the longitudinal direction of the tunnel vault, so that if necessary, it drives the two adjacent segments apart, and thus these and all other segments.
  • each tubbing has sealing profile strips made of elastic material embedded in grooves on its end faces, which thus extend all around it.
  • the international publication WO 91/07571 shows what such sealing profile strips look like. Such lasts are also given to the capstone mentioned above. The problem now arises when this end stone is driven into the wedge-shaped joint. Its sealing profile strip, which is arranged on the wedge-shaped end faces, comes into contact with the corresponding strips of the adjacent segments.
  • Swiss Patent No. 444 899 provides a slide-tilt bearing for buildings, in particular for bridges, in which a plate made of elastically deformable material is provided on one of its contact surfaces with a plastic sliding layer with a coefficient of friction which is considerably lower than that of the plate material.
  • This plate lies with this plastic sliding layer on a counter plate.
  • the plastic sliding layer ensures a relatively slight displacement of the building relative to its base, which is important for bridges with their thermally induced changes in length.
  • the invention therefore provides that a cross-sectional area is selected from the profile cross-section of the sealing profile strip is intended to take up the harder material, this area being defined in such a way that it is limited by that of the two long sides, which is exposed to the frictional forces, on the one hand and by the plane defined by the channels on the other hand, and that during the manufacture of the sealing profile strip the harder material is arranged next to the softer material in such a way that the layer formed from it comes to lie within the area mentioned, and in such a way that, even if it only partially fills the area, the longitudinal side of this layer exposed to the frictional forces is formed.
  • Profile strips made of elastic material are usually produced by extrusion. It is almost irrelevant for the extrusion process whether only one material or two with different properties are used; however, there is the advantage that the different materials bond to one another during the extrusion process.
  • the profile strip is therefore considerably more resistant to the forces acting on it than one which is manufactured according to the prior art mentioned.
  • it is already ready for installation, i.e. it can even be placed on the tubbings with little effort only on the tunnel construction site. In view of the fact that an enormous number of keystones are required for a short tunnel, this is another decisive advantage.
  • Figures 1 and 2 show a sealing profile strip 1 according to the already mentioned international publication WO91 / 07571. Details of their execution can be found in the cited publication. Only the three openings 2 and four channels 3 are important for the present invention. With the latter, it should be noted that their highest points 4 all lie on a level 5.
  • the strip 1 is embedded in a groove 6 of a tunnel cladding element 7, the so-called tubbing, and anchored there, usually by gluing.
  • the cross section of the strip 1 has two long sides 8, 9. The long side 8 lies on the bottom of the groove 6.
  • Figure 1 shows the two strips 1, 1 'and thus their long sides 9, 9' before assembly, that is, before mutual compression.
  • the segments 7, 7 ' are elements which have four narrow or end faces perpendicular to each other, and that a groove with a sealing profile strip is arranged in each end face.
  • the strip 1 now has a layer 10, which consists of a harder material than that of the rest of the strip, directly below its long side 9, the contact long side. This hardness can be 90 - 95 Shore A units.
  • Such a hard but still elastic material has a coefficient of sliding friction that is already considerably lower than that of the normal last material.
  • a lubricant or lubricant is added to this material, which further reduces this coefficient.
  • This wax-like lubricant has the property that after the admixture and after the vulcanization of the sealing profile strip, it diffuses out of the material on its surface and thus creates a very smooth surface.
  • Figure 3 shows two segments on the apex of a tunnel vault, which is only symbolically represented by its longitudinal axis AA.
  • the two tubbings are special designs in that, unlike the others, they are not exactly rectangular when viewed from above.
  • Their two mutually directed end faces 11 do not run parallel to the axis AA mentioned, but each form a plane that penetrates one another on this axis.
  • the two end faces 11 thus run in a wedge shape with respect to one another. However, there is a gap between them, into which a Matching tunnel arch element 12, the keystone, is used.
  • the layer 10 can only comprise that part of the region 14 which extends from the longitudinal contact side 9 to the imaginary plane 5 formed by the tips 4 of the openings 3, that is to say only over part of its thickness d. However, it can also encompass the entire area 14, as shown in FIG. 2. How thick the layer 10 must be depends on the local conditions.
  • the layer 10 has not only the purpose, together with the lubricant, of greatly reducing the coefficient of sliding friction. A lubricant alone could do that too. However, a lot more lubricant is required because the soft material of the remaining part of the strip 1 would absorb a lot more lubricant. Hard material takes less; it also diffuses better on the surface of the bar, i.e. on the long side 9.
  • the hard material of the layer 10 allows larger channels 3 and larger grooves 2 than is customary for the strips without a layer 10.
  • this saves material, on the other hand, the more elastic part of the sealing strip can be compressed more easily.
  • the area of the total cross section of the strip must not be larger than the cross section of the groove 6, because the strip must be compressed to this groove during compression, so it must disappear in the groove 6.
  • a third advantage is that the layer 10, because of its harder material, can also better withstand the tensile stresses that occur during sliding friction. So it acts like a kind of reinforcement. If you connect the four sealing profile strips around each tubbing or the end stone 12 at their ends by means of special corner pieces that are vulcanized on, and if these corners also have a hard layer, a solid frame made of molding material is created. It prevents longitudinal displacements of the frame part exposed to compression, because the tensile and compressive stresses occurring in the process have an effect around the corners and are absorbed by the frame parts running perpendicular to this frame part. Due to the hard material of the layer 10, this elongation under tensile forces is already small, which is also the case has a positive effect on the bar remaining in its original position.
  • the two measures namely the reduction of the sliding friction coefficient and that of the expansion, can still be improved.
  • the sliding resistance can be reduced even further by adding electrically conductive material in powder or granule form to the hard material of the layer 10 in addition to the abovementioned friction-reducing admixture and then excluding the layer 10 from an electrical circuit. Due to the resulting heating, the layer 10 temporarily becomes somewhat softer, which facilitates the assembly of the sealing profile strip, which is why this measure must be carried out before insertion. After cooling, however, the layer becomes hard again and, above all, its surface becomes even smoother than at the beginning. This reduces the coefficient of sliding friction again.
  • the electrically conductive admixture can be used later, after assembly, to obtain controls over the position of the sealing profile strip under the effect of any mountain pressure in the tunnel and thus over the sealing effect of the strip.
  • the further reduction in the elongation of the layer 10 can be done by also Plastic fibers added. After vulcanization, they behave like reinforcement and thus reduce the stretch even further. Distortion of the sealing profile strip in its longitudinal direction by the friction forces occurring when inserting the end cap 12 is avoided in this way with practically complete safety further additional means can also be provided to improve the anchoring of the bar in the groove 6.
  • anchoring ribs 15 are provided. These are located on the short sides 16 of the strip 1, that is to say on those which are at an angle to the lower longitudinal side 8 and are opposite the walls of the groove 6.
  • Anchoring is thus not only achieved until the adhesive has hardened, but the ribs 15 also result in very good anchoring against the frictional forces acting in the longitudinal direction of the groove when the stone 12 is inserted. This is particularly the case when these ribs 15 , as shown in Figure 4, in the form of Barbs that are directed upward. They not only prevent longitudinal displacements, but also, due to their upward pointing tips, any pulling out of the bar from the groove.

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  • 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)
  • Powder Metallurgy (AREA)

Claims (7)

  1. Procédé pour la fabrication d'une baguette profilée d'étanchéité élastique, placée de manière fixe sur un élément de construction de tunnel de manière qu'après sa mise en place, son déplacement par rapport à l'élément (7) sous l'effet de forces de friction soit empêché lors du montage de cet élément ou d'un autre élément voisin (7, 7', 12), cette baguette profilée d'étanchéité étant constituée par deux grands côtés (8,9) et, à l'intérieur, par des canaux (3), canaux qui sont disposés sur un plan parallèle (5) aux grands côtés et qui sont en outre munis sur leur périphérie de moyens (10, 15) qui réduisent l'influence des forces de friction sur l'ancrage de la baguette sur l'élément de construction en tunnel (7, 12), un moyen étant formé par une couche (10) à base d'un matériau qui est, dans ce but, certes plus dur que le matériau du reste de la baguette profilée d'étanchéité (1), tout en conservant malgré tout son élasticité,
    caractérisé en ce qu'à partir de la section transversale profilée, on sélectionne une zone de section transversale (14) qui est destinée à recevoir le matériau le plus dur, cette zone (14) étant définie de sorte qu'il est limité, d'une part, par celui des grands côtés (8, 9), qui est exposé aux forces de friction, et, d'autre part, par le plan défini par les canaux (3) et en ce que, lors de la fabrication de la baguette profilée d'étanchéité, le matériau dur est placé à côté du matériau mou de telle sorte que la couche (10), se composant de ce dernier, vient se loger à l'intérieur de ladite zone (14) et, ce, de telle manière que, même si elle (10) ne remplit que partiellement la zone, ledit côté longitudinal (9), exposé aux forces de friction, est formé par cette couche.
  2. Procédé selon la revendication 1, caractérisé en ce qu'il est ajouté, à ce matériau plus dur, un lubrifiant abaissant encore son coefficient de friction de glissement.
  3. Procédé selon la revendication 2, caractérisé en ce qu'il est encore ajouté, au matériau de la couche, une poudre électriquement conductrice ou un granulat et en ce qu'ensuite, au moins la couche (10) est raccordée à un circuit électrique, pour son échauffement provisoire suivi d'une autre réduction du coefficient de friction de glissement, résultant du refroidissement suivant.
  4. Procédé selon la revendication 3, caractérisé en ce que cet échauffement s'effectue avant le montage de la baguette profilée d'étanchéité sur l'élément de construction de tunnel.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'il est encore ajouté, au matériau de la couche (10), des fibres synthétiques pour le durcir davantage et donc réduire son extensibilité sous l'action des forces de friction.
  6. Procédé selon la revendication 1, caractérisé en ce qu'il est prévu comme moyen, sur la section transversale de la baguette profilée d'étanchéité (1), des nervures d'ancrage (15), faisant saillie des deux côtés de celle-ci, qui sont disposées de telle sorte qu'elles ancrent la baguette profilée d'étanchéité (1) dans une rainure (6), disposée en dernier, pour sa mise en place sur l'élément de construction de tunnel (7, 12), contre un éventuel déplacement longitudinal dans cette rainure, dû à l'action des forces de friction.
  7. Baguette profilée d'étanchéité réalisée selon le procédé de la revendication 1, dont la section transversale, perpendiculaire à son axe longitudinal médian, est limitée par deux grands côtés (8, 9) opposés l'un à l'autre et au moins deux petits côtés formant un angle par rapport aux premiers, qui sont destinés, conjointement avec un grand côté (8), à constituer l'appui de la baguette (1) dans une rainure (6) de l'élément de construction de tunnel (7, 12), tandis que l'autre grand côté (9) sert à l'application étanche contre un grand côté (9') identique d'une baguette (1'), dans un élément de construction de tunnel adjacent, caractérisée en ce que la couche (10) est directement placée sur ce grand côté (9) et comprend au moins une partie d'une zone (14) qui s'étend du grand côté (9) jusqu'à des canaux (3) disposés à l'intérieur de la baguette profilée d'étanchéité, permettant la compression de la baguette et disposés essentiellement dans un plan (5) parallèle audit grand côté (9).
EP92924534A 1992-01-06 1992-12-21 Procede de prevention du deplacement d'une moulure profilee d'etancheite par rapport a un element de tunnel et moulure profilee d'etancheite produite selon ce procede Expired - Lifetime EP0574559B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH9292A CH686383A5 (de) 1992-01-06 1992-01-06 Verfahren zur Herstellung einer nicht verschiebbaren Dichtungsprofilleiste und nach diesem Verfahren hergestellte Leiste.
CH9/92 1992-01-06
PCT/CH1992/000246 WO1993014297A1 (fr) 1992-01-06 1992-12-21 Procede de prevention du deplacement d'une moulure profilee d'etancheite par rapport a un element de tunnel et moulure profilee d'etancheite produite selon ce procede

Publications (2)

Publication Number Publication Date
EP0574559A1 EP0574559A1 (fr) 1993-12-22
EP0574559B1 true EP0574559B1 (fr) 1997-05-14

Family

ID=4177343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92924534A Expired - Lifetime EP0574559B1 (fr) 1992-01-06 1992-12-21 Procede de prevention du deplacement d'une moulure profilee d'etancheite par rapport a un element de tunnel et moulure profilee d'etancheite produite selon ce procede

Country Status (6)

Country Link
EP (1) EP0574559B1 (fr)
AT (1) ATE153102T1 (fr)
CH (1) CH686383A5 (fr)
DE (1) DE59208501D1 (fr)
FR (1) FR2685935B1 (fr)
WO (1) WO1993014297A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6575664B1 (en) 1999-09-14 2003-06-10 Phoenix Ag Sealing arrangement
US6612585B2 (en) * 2001-10-11 2003-09-02 Däwyler AG Schweizerische Kabel - Gummi-und Kunststoffwerke Elastomeric strand-shaped sealing profile

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0982472B1 (fr) * 1998-08-26 2003-03-12 Tarmac Limited Systeme d'étancheité pour voussoir de tunnel
EP1181436B1 (fr) 2000-03-30 2006-05-03 Phoenix AG Dispositif d'etancheite pour segments de tunnel
CN110318778A (zh) * 2019-07-31 2019-10-11 中铁第四勘察设计院集团有限公司 一种减小摩擦变形的管片防水密封垫及盾构管片防水结构
CN110284909A (zh) * 2019-07-31 2019-09-27 中铁第四勘察设计院集团有限公司 一种减摩的管片防水密封垫及盾构管片防水结构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1239345B (de) * 1964-06-24 1967-04-27 Gumba Gummi Im Bauwesen G M B Gleitlager fuer Bruecken und aehnliche Bauwerke
DE7229665U (de) * 1972-08-10 1972-11-23 Phoenix Gummiwerke Ag Dichtungsprofil fur Tubbings
DE3731186A1 (de) * 1987-09-17 1989-04-06 Phoenix Ag Gelenkplatte
ATE81706T1 (de) * 1989-08-19 1992-11-15 Phoenix Ag Dichtungsprofil fuer tunnel-segmente.
CH679510A5 (fr) * 1989-11-10 1992-02-28 Daetwyler Ag

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6575664B1 (en) 1999-09-14 2003-06-10 Phoenix Ag Sealing arrangement
US6612585B2 (en) * 2001-10-11 2003-09-02 Däwyler AG Schweizerische Kabel - Gummi-und Kunststoffwerke Elastomeric strand-shaped sealing profile

Also Published As

Publication number Publication date
CH686383A5 (de) 1996-03-15
DE59208501D1 (de) 1997-06-19
FR2685935B1 (fr) 1999-02-05
WO1993014297A1 (fr) 1993-07-22
ATE153102T1 (de) 1997-05-15
FR2685935A1 (fr) 1993-07-09
EP0574559A1 (fr) 1993-12-22

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