EP0644980B1 - Coin de cadre d'etancheite pour panneaux de cuvelage de tunnels - Google Patents

Coin de cadre d'etancheite pour panneaux de cuvelage de tunnels Download PDF

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Publication number
EP0644980B1
EP0644980B1 EP94911044A EP94911044A EP0644980B1 EP 0644980 B1 EP0644980 B1 EP 0644980B1 EP 94911044 A EP94911044 A EP 94911044A EP 94911044 A EP94911044 A EP 94911044A EP 0644980 B1 EP0644980 B1 EP 0644980B1
Authority
EP
European Patent Office
Prior art keywords
corner
recesses
cavities
corner piece
piece
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
EP94911044A
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German (de)
English (en)
Other versions
EP0644980A1 (fr
Inventor
Norbert Herwegh
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daetwyler AG Schweizerische Kabel Gummi und Kunststoffwerke filed Critical Daetwyler AG Schweizerische Kabel Gummi und Kunststoffwerke
Publication of EP0644980A1 publication Critical patent/EP0644980A1/fr
Application granted granted Critical
Publication of EP0644980B1 publication Critical patent/EP0644980B1/fr
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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 corner region of a sealing frame for a tunnel tubbing, which consists of the ends of two sides of the sealing frame running at an angle to one another, consisting of sealing profile strips, and of a corner piece connecting these ends, the sealing profile strips in cross-section with in their longitudinal direction up to Ends are continuous grooves and cavities provided and the corner piece has recesses which run at an angle to the grooves and cavities of one end and the other and are at least open to the inside of the sealing frame.
  • Tunnel tubbings are rectangular, often slightly curved, concrete slabs that are used to cover a tunnel that has just broken out.
  • each tubbing has a circumferential groove on its four narrow sides, into which a sealing profile frame is inserted, which protrudes slightly from it.
  • the segments are assembled under pressure so that they touch; this causes the sealing frames to come into contact with each other on each of their sides under high pressure, whereby they are pressed completely into the segment groove. In this way, they form an actual sealing network in the tunnel, which extends both over the arch of the tunnel and in the longitudinal direction of the tunnel.
  • the sealing profile strips themselves are industrially preformed by extruding them into any length and then cutting them to the size that the side length of square segments. corresponds to the respective side length for rectangular segments.
  • the seal cross-section should be relatively large.
  • the tubbing groove becomes more sensitive to injury the larger it is, so it should be possible to keep it as small as possible.
  • relatively large sealing pressures are necessary, which in turn are more likely to be achieved by a large profile cross-section; on the other hand, the smallest possible sealing material cross section is sought for reasons of cost.
  • the profile strip cross-section and the groove cross-section in the tubbing are coordinated with one another in such a way that an optimally coordinated and profiled strip cross-section can be formed into the smallest possible groove cross-section.
  • the concrete groove flanks of the tubbing may be blown off when the segments are pressed in, which sometimes happens with very considerable forces.
  • corner areas of the frame which is cut from the individual pieces of the profile strip strand.
  • the corner areas are produced by inserting the pieces into a mold and then injecting unvulcanized rubber into the free mold corners; the rubber is vulcanized by pressure and heat.
  • special attention must also be paid to the design of the corner areas. This is easiest if the sealing profile strip is arched in cross section, but without cavities. Then this cross section remains unchanged in the corner. The same is not possible in the case of profiles with hollow chambers or heavily undercut areas, since the inserted parts in the hollow chamber area cannot be removed from the mold at all and only very difficult to remove from undercuts after vulcanization.
  • a solution must therefore be found that allows the material cross section in the corner area to be reduced to such an extent that, as in the profile area, the material cross section is not greater than the volume available from the joint cross section.
  • a larger material cross-section also leads to an explosive effect, which causes the weaker joint flank of the segment to flake off.
  • the corner area according to the invention is characterized by the features of claim 1.
  • Fig. 1 shows a tunnel tubbing as hundreds are used for the covering of tunnels that have just been excavated. It carries a sealing frame 1 on its narrow sides, which is embedded in a groove (not visible here) in these sides.
  • the segments are both along the arch and in The longitudinal direction of the tunnel is lined up like a checkerboard, under pressure, so that the sealing frames are pressed together and seal in this way.
  • Each sealing frame 1 is composed of sides 2 and corner pieces 3 connecting them.
  • Each corner piece 3 forms, with the ends 4 of the relevant sides 2 abutting thereon, a corner area 5 which, because of the conditions mentioned in the introduction, in particular because of the assembly of the segments, under pressure, must be specially designed, as described below.
  • Such a corner area 5 is shown in FIG. 2 in a view from the inside of the sealing frame 1, specifically, as can easily be seen, in the viewing direction along a diagonal of the frame. It can be seen that the sides 2 consist of sections of a sealing profile strip extruded in any length. The cross section of the same can also be seen from this figure, since only the ends 4 of the sides are shown. Which section of each page 2 is to be regarded as the end 4 is initially irrelevant; but it is essential for the following explanations to speak of such ends.
  • the sealing profile strip or the sides 2 cut from it have grooves 6 and cavities 7, 8 extending in the longitudinal direction. While the grooves 6 abut the already mentioned groove during tubbing and partly also serve for drainage, both the internal cavities 7 and the external cavities 8 are only there for the deformation of the sealing frame 1 under the pressure of the same frame of another To enable tubbings and thus to ensure a perfect seal. Due to the extrusion process, the grooves 6 are of course also continuous, like the cavities 7, 8, i.e. they extend into the ends 4.
  • the corner piece 3 is manufactured in such a way that two sides 2 each are in a shape at an angle to one another, usually at 90 °, be inserted.
  • the mold is then closed and unvulcanized rubber is injected. Under heat and pressure, this vulcanises in a very short time and connects to pages 2 and their ends 4.
  • each side 2 must be deformable to the extent that it can completely disappear into the segment groove. Because of the very low compressibility of the rubber, which has also already been mentioned, rubber cannot be simply injected into the mold in accordance with the mold volume. This would make the corner piece 3 to be formed a full body, with the already mentioned risk that the edge of the tubbing adjacent to the tubbing groove would then be blown away perpendicular to the plane of the latter when the sealing frame was compressed. So you have to make sure that the total volume of injected rubber is at most as large as the volume of the corresponding corner of the segment groove. Recesses must therefore be provided. The mold cores required for this must be arranged in such a way that they can be easily removed after injection. One can already see from this requirement that the above-mentioned recesses cannot simply be continuations of the grooves 6 or the cavities 7, 8, otherwise demoulding would be impossible.
  • the invention therefore provides for the recesses, hereinafter referred to as 9 or 9 ', to be placed essentially at an angle to the grooves 6 and cavities 7, 8 and to keep them open against the inside of the frame 1.
  • the inside is more suitable because the outside forms the sealing surface and therefore does not allow any unevenness.
  • These recesses, 9 in the embodiment according to FIGS. 3, 9 'in the embodiment according to FIG. 4, are clearly visible there and in FIG. 2. Since the corner areas 3 are rectangular due to the generally square or rectangular segments, it is expedient to place the recesses 9, 9 'at 45 ° to the grooves 6 and the cavities 7, 8 of the adjacent end 4.
  • FIGS. 3 and 4 differ in two details.
  • Fig. 3 shows the preferred, but somewhat more complex to manufacture, in which the recesses 9 each end in a plane 12 which extends at an angle to the corresponding outer side 13 of the corner piece 3 in such a way that the wall thickness d is close corner 10 is the lowest and increases steadily from there.
  • the plane 12 ' runs parallel to the outside 13, and therefore the wall thickness d is constant. It is a great advantage if this wall thickness resp. 3, the smallest wall thickness is at least one third of the diameter of the recesses 9, 9 '. If these are not circular in cross-section, but e.g. elliptical as in Fig. 2, the mentioned value is related to the smaller diameter.
  • the second difference between the two embodiments is how the ends 4 are cut.
  • this cutting takes place exactly at right angles to the longitudinal axis of the side 2, which is easier in terms of production technology, but leads to more mass in the corner piece 3.
  • the cutting is therefore carried out at an angle before insertion into the mold, and expediently at 45 ° in such a way that the end faces 14 thus created run parallel to the longitudinal axes 15 of the recesses 9. This considerably reduces the volume of the corner piece 3, as a comparison of FIGS. 3 and 4 shows.
  • the cavities 7, 8 are open at the end faces 4 mentioned. Since the injection process must take place under a certain minimum pressure or above in order to achieve a good connection of the corner piece 3 to the adjacent ends 4, part of the injected material would flow into the cavities 7, 8 and fill them over a longer distance, which would result in a significant increase in volume of the ends 4 and thus leads to a sharp reduction in the deformability. To avoid this, according to FIGS. 3 and 4, plugs 16 are inserted into the mouths of the cavities 7, 8 (only those for the cavities 8 are shown) and before the sides 2 are inserted into the mold.
  • the still protruding ends of the plugs 16 are cut off in accordance with the course of the respective end face, that is to say obliquely in FIG. 3 as the end face 14.
  • the oblique cut-off has a great advantage over the straight cut-off according to FIG. 4 are explained. If the rubber is put under pressure into the injection mold to form the corner piece 3, a force P acts on each stopper 16 perpendicular to the end face and thus perpendicularly on the oblique end of the stopper 16.
  • This force P can be broken down into two components , ie in a component P1 in the longitudinal axis of the stopper and in a component P2 transversely to it. The latter presses the plug 16 even more strongly against the wall of the cavity than would be the case simply by inserting it.
  • Rubber cords can be used for the stopper 16, the volume of which is somewhat larger (approx. 10%) than the cavity volume filled by the stopper. This already results in compression when the mold is closed, which prevents the plug from being pushed away along the cavity during the subsequent injection.
  • This static friction can be increased if, instead of the profile cords, small molded parts with a recess conical to the injection area are used, so that the static friction component is reinforced.
  • the static friction component can be strengthened again by using profile cords to plug the cavities, which have the roughest possible surface due to the choice of material or production.
  • the combination of the measures namely the cylindrical diagonal recesses in the corner area and the closing of the cavity ends, means that the total material volume in the corner area is not greater than the available volume of the segment groove in the corner area.
  • the length l of a plug 16 or. its shortest length in the inclined section advantageously corresponds minimally to the smallest diameter D of the cavity blocked by it at the relevant end. On the one hand, a good adhesion of the plug is achieved, but on the other hand, the deformability of the end 4 is only insignificantly impaired.

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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)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Body Structure For Vehicles (AREA)

Claims (7)

  1. Coin d'un cadre d'étanchéité pour un panneau de cuvelage qui se compose des extrémités de deux faces (2) du cadre d'étanchéité (1), se composant de baguettes profilées d'étanchéité, en formant un angle entre elles et d'un coude (3) reliant ces extrémités (4), les baguettes profilées d'étanchéité étant munies, dans leur coupe transversale, de rainures (6) et cavités (7, 8) s'étendant en continu dans leur sens longitudinal jusque dans les extrémités et le coude (3) présentant des évidements (9, 9') qui s'étendent en formant un angle par rapport aux rainures (6) et aux cavités (7, 8) de l'une comme de l'autre extrémité (4) et qui sont au moins ouvertes en direction de la face interne du cadre d'étanchéité (1), caractérisé en ce que les évidements (9, 9') s'étendent dans le coude (3) en formant respectivement un angle de 45° par rapport aux cavités (7, 8) et en ce que de part et d'autre d'une diagonale reliant le coin externe (10) au coin interne (11) du coude (3), il y a à chaque fois autant d'évidements (9, 9'), placés les uns au-dessus des autres, que le nombre de rainures (16) présentes sur chaque face (2).
  2. Coin selon la revendication 1, caractérisé en ce que les évidements (9') se terminent avant la face externe (13) du coude (3) dans un plan (12') qui s'étend parallèlement à cette face externe (13) pour obtenir une épaisseur constante de paroi (d) du coude.
  3. Coin selon la revendication 1, caractérisé en ce que les évidements (9) se terminent avant la face externe respective (13) du coude (3) dans un plan (12) qui s'étend parallèlement à cette face externe (13), en formant un angle et, ce, de sorte que l'épaisseur de paroi (d) du coude (3) augmente, depuis son coin (10), en direction des extrémités (4) des faces de cadre (2).
  4. Coin selon la revendication 2 ou 3, caractérisé en ce que l'épaisseur de paroi respectivement l'épaisseur minimale de paroi (d) s'élève à au moins un tiers du diamètre d'un évidement (9, 9') respectivement du plus petit diamètre d'un évidement de coupe transversale non circulaire.
  5. Coin selon la revendication 1, caractérisé en ce que les extrémités (4) des faces de cadre (2) sont coupées à 45° de sorte que leurs surfaces frontales (14) s'étendent parallèlement aux axes longitudinaux des évidements (9, 9') du coude (3).
  6. Coin selon la revendication 1, caractérisé en ce que les cavités (7, 8) sont fermées sur les surfaces frontales par des bouchons (16).
  7. Coin selon la revendication 6, caractérisé en ce que chaque bouchon (16) présente une longueur minimale (1) qui correspond au plus petit diamètre (D) de la cavité bouchée par lui à l'extrémité concernée.
EP94911044A 1993-04-16 1994-04-11 Coin de cadre d'etancheite pour panneaux de cuvelage de tunnels Expired - Lifetime EP0644980B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH01166/93A CH686900A5 (de) 1993-04-16 1993-04-16 Eckbereich eines Dichtungsrahmens fuer einen Tunneltubbing.
CH1166/93 1993-04-16
PCT/CH1994/000072 WO1994024417A1 (fr) 1993-04-16 1994-04-11 Coin de cadre d'etancheite pour panneaux de cuvelage de tunnels

Publications (2)

Publication Number Publication Date
EP0644980A1 EP0644980A1 (fr) 1995-03-29
EP0644980B1 true EP0644980B1 (fr) 1997-07-23

Family

ID=4204022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94911044A Expired - Lifetime EP0644980B1 (fr) 1993-04-16 1994-04-11 Coin de cadre d'etancheite pour panneaux de cuvelage de tunnels

Country Status (6)

Country Link
US (1) US5660501A (fr)
EP (1) EP0644980B1 (fr)
AT (1) ATE155849T1 (fr)
CH (1) CH686900A5 (fr)
DE (1) DE59403441D1 (fr)
WO (1) WO1994024417A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1887183A1 (fr) * 2006-08-01 2008-02-13 Ein Shemer Rubber Industries Coin de cadre d'étanchéité pour panneaux de cuvelage de tunnels

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6039503A (en) * 1998-01-29 2000-03-21 Silicone Specialties, Inc. Expansion joint system
EP1114915B1 (fr) * 2000-01-04 2006-05-24 Volker Hentschel Revêtement de tunnels
DK1302626T3 (da) 2001-10-11 2006-04-03 Daetwyler Ag Tætningsprofil til tunnelsegmenter
EP4108881A1 (fr) * 2021-06-21 2022-12-28 CTS Cordes tubes & seals GmbH & Co. KG Angle du cuvelage en retrait

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH629869A5 (de) * 1978-03-23 1982-05-14 Daetwyler Ag Fugendichtung mit dichtungsstreifen bei stossfugen zwischen einzelnen bauelementen.
DE3540494A1 (de) * 1985-11-15 1987-05-21 Phoenix Ag Dichtungsprofil fuer segmente von tunnelroehren
FR2602543B1 (fr) * 1986-08-08 1988-11-04 Phoenix Ag Joint d'etancheite profile pour segments de tube destines a etre assembles en un tunnel
GB2209568B (en) * 1987-09-05 1991-10-23 Phoenix Ag Sealing profile for tunnel segments
EP0306581B1 (fr) * 1987-09-10 1992-05-13 Le Joint Francais Joint d'étanchéité pour voussoir de tunnel
FR2651275B1 (fr) * 1989-08-25 1991-12-06 Joint Francais Joint d'etancheite profile en elastomere pour voussoir de tunnel.
CH679510A5 (fr) * 1989-11-10 1992-02-28 Daetwyler Ag
FR2655374B1 (fr) * 1989-12-04 1992-04-03 Joint Francais Joint d'etancheite en elastomere pour voussoir de tunnel.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1887183A1 (fr) * 2006-08-01 2008-02-13 Ein Shemer Rubber Industries Coin de cadre d'étanchéité pour panneaux de cuvelage de tunnels

Also Published As

Publication number Publication date
EP0644980A1 (fr) 1995-03-29
WO1994024417A1 (fr) 1994-10-27
CH686900A5 (de) 1996-07-31
US5660501A (en) 1997-08-26
ATE155849T1 (de) 1997-08-15
DE59403441D1 (de) 1997-09-04

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