EP1302626B1 - Sealing section for tunnel segments - Google Patents

Sealing section for tunnel segments Download PDF

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Publication number
EP1302626B1
EP1302626B1 EP02021525A EP02021525A EP1302626B1 EP 1302626 B1 EP1302626 B1 EP 1302626B1 EP 02021525 A EP02021525 A EP 02021525A EP 02021525 A EP02021525 A EP 02021525A EP 1302626 B1 EP1302626 B1 EP 1302626B1
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EP
European Patent Office
Prior art keywords
sealing profile
sealing
base side
main body
profile according
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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EP02021525A
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German (de)
French (fr)
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EP1302626A1 (en
Inventor
Werner Dr.-Ing. Grabe
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Daetwyler AG Schweizerische Kabel Gummi und Kunststoffwerke
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Daetwyler AG Schweizerische Kabel Gummi und Kunststoffwerke
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Priority to SI200230275T priority Critical patent/SI1302626T1/en
Priority to AT02021525T priority patent/ATE312272T1/en
Publication of EP1302626A1 publication Critical patent/EP1302626A1/en
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Publication of EP1302626B1 publication Critical patent/EP1302626B1/en
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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/906—Seal for article of indefinite length, e.g. strip, sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/921—Closure or weather strip seal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/934—Seal swells when wet

Definitions

  • the invention relates to an elastomeric, strand-shaped sealing profile for a circumferential receiving groove having tunnel segment with a base side, a back side whose width is smaller than the width of the base side, and Flank sides connecting the base side to the back side.
  • Sealing profiles for sealing the gaps between tunnel segments are, for example from DE 35 26 063 A1, DE 37 20 919 A1, DE 40 26 076 A1, DE 41 03 089 A1, DE 196 03 188 A1, CH 679 510 A5, EP 306 581 A1 and EP 522 912 A1 known.
  • sealing tunnel segments with circumferential grooves are usually four sealing profiles by means of associated Frame corners to one in the circumferential receiving groove of the tunnel segment arranged sealing frame formed.
  • Such with sealing profiles in theirs circumferential grooves provided tunnel segments or segments are assembled into rings, which in turn become a complete tunnel tube be composed, as for example in DE 196 03 188 A1 is described.
  • the water pressure, compared to a reliable seal to ensure is in the range of 1 to 4bar
  • the Channel Tunnel is this Pressure in the range of 10bar
  • tunnel projects are conceivable and planned, where this sealing pressure is again much higher, for example at 30bar.
  • a reliable seal even at relatively large Gap widths between the tunnel segments can be achieved. It can too a subsequent gap opening as a result of deformation of the original circular tunnel tube come through ovalization.
  • a sealing profile is arranged offset with two rows Channels, which is too soft for high water pressures.
  • the end DE 37 20 919 A1 known sealing profile is relatively flat in height, which is why it is not able to seal high water pressures in larger columns.
  • Seals according to DE 40 26 076 A1 move laterally attacking water pressure, causing the originally intended sealing effect the splayfoot is lifted.
  • From DE 41 03 089 is a sealing profile known with two rows of superimposed channels, where vertical and are formed obliquely through webs. In a compression without deform a lateral offset of the opposite grooves These gaskets such that they twist inside and a lateral Move the tunnel segments to each other cause.
  • a sealing profile is further known, which in the Has a groove-shaped recess in the region of its back, in which a strip-shaped Insert can be clipped, which consists of a water-swelling material consists. If due to a decreasing sealability, water to this Insert penetrates, the water-swelling material increases its volume, causing additional sealing stresses are built up.
  • the object of the invention is to provide an elastomeric strand-shaped sealing profile of to provide the aforementioned type, by a safe and durable Seal against very high water pressures is possible. According to the invention this is achieved by a sealing profile with the features of claim 1.
  • the sealing profile can be at laterally attacking water pressure on the opposite Support groove edge and is only minimally moved laterally.
  • the cantilevers are at a substantially trapezoidal Basic body of the sealing profile arranged.
  • the sealing profile can be formed so that the profile can disappear completely in the groove and the restoring forces stay within acceptable limits.
  • the maximum sizes of the restoring forces should not be too high, for example, the Nutein chargeden the Tunnel segments do not peel off.
  • the total cross-sectional area of the Sealing profile can, for example, in the range of about 90% (+/- 5%) the cross-sectional area of the receiving groove lie.
  • substantially trapezoidal is intended to be within the scope of this specification also refer to such bodies (seen in cross-section) in which the two parallel sides connecting leg sections with different Have angles of inclination, for example, above and below the side protruding cantilevers.
  • the water-side sealing lip in the area of the corners between the base side and the respective flank side of the sealing profile outgoing sealing lips is pressed by the upcoming water pressure against the groove flank and seals automatically.
  • an additional sealing pressure by increasing the volume of the sealing lip. This will cause the sealing lip against the groove wall on the one hand and the flank side of the sealing profile on the other hand pressed and sealed effectively.
  • these can Sealing lips of a softer material than the body of the sealing profile exist, so that these sealing lips very well to the bumps can adjust the concrete surface.
  • a Y-shaped structure of internal Includes webs, high restoring forces can be derived in the middle of the groove.
  • at least two rows of distributed over the width of the sealing profile Channels are provided.
  • the base side of the sealing profile as a closed Stand surface is formed, that is, without starting from the stand, Rillennuten reaching into the interior of the base part.
  • the footprint is thus essentially just trained.
  • Such full surface footprint of the sealing profile allows an excellent bonding of the profile in the groove, what in turn contributes to the stability of the formed seal.
  • the back side of the profile forming web coextruded Insert is arranged from a water-swelling material.
  • the volume of this insert increases, thereby an additional compressive stress is generated which reduces the force loss of the compression seal compensates or overcompensates.
  • Fig. 1 are schematically two opposite grooves 1 in adjacent Tunnel segments 2 shown.
  • Each tunnel segment 2 has at its Side surfaces a circumferential receiving groove 1, to insert in the sealing profiles are.
  • the grooves have a groove bottom 3 and groove edges 4.
  • Between the Tunnel segments 2 is a gap with the width of a, through which in the grooves sealed sealing profiles is sealed.
  • the groove centers of the opposite Receiving grooves may have a certain lateral offset d.
  • the embodiment shown in Fig. 2 in cross section of an inventive Sealing profile is shown in its relaxed state and the Receiving groove, in which it is to be used, is indicated by dashed lines.
  • the elastomeric, strand-shaped sealing profile comprises a base side 6, a back side 7, whose width b is smaller than the width B of the base side 6.
  • the base side and the back side are connected by flank sides 8.
  • the sealing profile has an isosceles trapezoidal cross-section Base 5, whose parallel sides of the base side and of the back side of the sealing profile are formed.
  • the main body 5 is traversed by a crossbar 10, which on the opposite flank sides 8 of the sealing profile projects beyond the main body 5. It will therefore on the legs of the trapezoidal body laterally projecting cantilevers 9 formed, which extend in the longitudinal direction of the profile continuously (an interrupted Course in the longitudinal direction of the profile would be conceivable and possible).
  • the imaginary legs of the trapezoidal body are in the range of cantilevers 9 indicated by dashed lines.
  • These cantilevers 9 are integral with the body 5 formed and consisting of the same material as the main body.
  • the cantilevers 9 are located in a region of the flank sides, both of the Base side, as well as from the back side is spaced.
  • the cantilevers 9 close each seen in cross section at an angle of less as 30 ° with the base side 6 of the sealing profile and are preferably slightly inclined downwards, so that they are approximately at right angles to the adjacent groove flank 4 stand.
  • the lying within the body 5 section of the crossbar 10 runs approximately parallel to the base side 6 of the sealing profile.
  • the over the Main body 5 laterally projecting cantilever arms 9 abut with their free ends the groove edges 4 at.
  • the crossbar 10 In the sealing profile are above and below the crossbar 10 each over provided the width of the sealing profile distributed channels.
  • Above the crossbeam 10 is a series of three triangular channels 11, 12, 13 in cross-section arranged.
  • Below the crossbeam is a row adjacent to the base side Channels 14-17 in the form of each closed by a wall 18 Grooved grooves arranged. The high points of these closed grooves form a parabolic imaginary arch whose maximum in the profile center is and the corners 19, 20 between the base side 6 and the adjacent Flank sides 8 cuts.
  • Between the two lateral channels 14 and 17 and the crossbar 10 are further circular in cross-section channels 28, 29 arranged.
  • a triangular Train structure Starting from the areas of the corners 22, 23 between the back side 7 and the flank sides 8 are two consecutive webs 24, 25 provided the together with the back side forming web 26 a triangular Train structure. Starting from the two running towards each other Webs formed tip of this triangular structure is one to the base side 6 the sealing profile and perpendicular to this extending web 27 is provided, whereby Overall, a Y-shaped structure is formed.
  • the knot of this Y-shaped Structure is in the area of the crossbeam 10. In the area of the knot this Y-shaped structure is also the highest point of the parabolic Arch that connects the high points of the grooved grooves channels 14 -17.
  • the back side of the sealing profile forming web 26 is a coextruded insert 21 provided from a water-swelling material.
  • this insert consists of an elastomer mixture with 30 to 65 Shore A.
  • the main body 5 and the cantilevers 9 are preferably made EPDM with 65 to 95 Shore A.
  • the sealing lips 30, 31 On the flank sides 8 of the main body 5 are laterally projecting, in Longitudinal direction of the sealing profile continuous sealing lips 30, 31 arranged, the areas of the corners 19, 20 between the base side 6 and the respective Flank side 8 are adjacent. In the embodiment shown, these go Sealing lips 30, 31 immediately at these corners 19, 20 of the flank sides. 8 of the sealing profile. In the relaxed state, the sealing lips 30, 31st laterally beyond the groove flanks 4.
  • the sealing lips 30, 31 are preferably made from a water-swelling material and are made by coextrusion educated. Conveniently, this is an elastomer mixture with a hardness in the range between 30 and 50 Shore A.
  • each with a water swellable Material for the insert 21 and the sealing lips 30, 31 is an additional security, in particular at an enlargement of the gap width a between the created adjacent tunnel segments.

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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)

Description

Die Erfindung betrifft ein elastomeres, strangförmiges Dichtungsprofil für ein eine umlaufende Aufnahmenut aufweisendes Tunnelsegment mit einer Basisseite, einer Rückenseite, deren Breite geringer als die Breite der Basisseite ist, und Flankenseiten, die die Basisseite mit der Rückenseite verbinden.The invention relates to an elastomeric, strand-shaped sealing profile for a circumferential receiving groove having tunnel segment with a base side, a back side whose width is smaller than the width of the base side, and Flank sides connecting the base side to the back side.

Dichtungsprofile zur Abdichtung der Spalten zwischen Tunnelsegmenten sind beispielsweise aus der DE 35 26 063 A1, DE 37 20 919 A1, DE 40 26 076 A1, DE 41 03 089 A1, DE 196 03 188 A1, CH 679 510 A5, EP 306 581 A1 und EP 522 912 A1 bekannt. Zur Abdichtung von Tunnelsegmenten mit umlaufenden Aufnahmenuten werden üblicherweise vier Dichtungsprofile mittels zugehörigen Rahmenecken zu einem in der umlaufenden Aufnahmenut des Tunnelsegments angeordneten Dichtungsrahmen ausgebildet. Solche mit Dichtungsprofilen in ihren umlaufenden Aufnahmenuten versehenen Tunnelsegmente bzw. Tübbinge werden zu Ringen zusammengesetzt, welche wiederum zur kompletten Tunnelröhre zusammengesetzt werden, wie dies beispielsweise in der DE 196 03 188 A1 beschrieben ist. Die in gegenüberliegenden Aufnahmenuten in den aneinandergrenzenden Seitenflächen von zwei Tunnelsegmenten angeordneten Dichtungsprofile liegen somit mit ihren Rückenseiten aneinander an und werden mehr oder weniger vollständig komprimiert. Durch entsprechende elastische Rückstellkräfte werden Spannungen erzeugt, die die Segmente gegeneinander abdichten, wodurch eine Abdichtung gegen den anstehenden Wasserdruck im Erdreich oder aus Felsklüften langfristig erreicht werden soll.Sealing profiles for sealing the gaps between tunnel segments are, for example from DE 35 26 063 A1, DE 37 20 919 A1, DE 40 26 076 A1, DE 41 03 089 A1, DE 196 03 188 A1, CH 679 510 A5, EP 306 581 A1 and EP 522 912 A1 known. For sealing tunnel segments with circumferential grooves are usually four sealing profiles by means of associated Frame corners to one in the circumferential receiving groove of the tunnel segment arranged sealing frame formed. Such with sealing profiles in theirs circumferential grooves provided tunnel segments or segments are assembled into rings, which in turn become a complete tunnel tube be composed, as for example in DE 196 03 188 A1 is described. The in opposite receiving grooves in the adjoining Side surfaces of two tunnel segments arranged sealing profiles are thus with their back sides together and become more or less completely compressed. By appropriate elastic restoring forces stresses are generated which seal the segments against each other, whereby a seal against the upcoming water pressure in the soil or to be reached in the long term from rock formations.

In der Regel liegt der Wasserdruck, gegenüber dem eine Abdichtung zuverlässig zu gewährleisten ist im Bereich von 1 bis 4bar, beim Ärmelkanaltunnel liegt dieser Druck im Bereich von 10bar, es sind weiters Tunnelprojekte denkbar und geplant, bei denen dieser Dichtungsdruck nochmals wesentlich höher liegt, beispielsweise bei 30bar. Weiters soll eine zuverlässige Abdichtung auch bei relativ großen Spaltbreiten zwischen den Tunnelsegmenten erreicht werden. Auch kann es zu einer nachträglichen Spaltöffnung in Folge einer Verformung der ursprünglich kreisrunden Tunnelröhre durch Ovalisierung kommen. As a rule, the water pressure, compared to a reliable seal to ensure is in the range of 1 to 4bar, the Channel Tunnel is this Pressure in the range of 10bar, tunnel projects are conceivable and planned, where this sealing pressure is again much higher, for example at 30bar. Furthermore, a reliable seal even at relatively large Gap widths between the tunnel segments can be achieved. It can too a subsequent gap opening as a result of deformation of the original circular tunnel tube come through ovalization.

Aus der DE 35 26 063 A1 ist ein Dichtungsprofil mit zweireihig versetzt angeordneten Kanälen bekannt, welches für hohe Wasserdrücke zu weich ist. Das aus der DE 37 20 919 A1 bekannte Dichtungsprofil ist in seiner Bauhöhe relativ flach, weshalb es nicht in der Lage ist bei größeren Spalten hohe Wasserdrücke abzudichten. Dichtungen gemäß der DE 40 26 076 A1 verschieben sich bei seitlich angreifendem Wasserdruck, wodurch die ursprünglich vorgesehene Dichtwirkung des Spreizfußes aufgehoben wird. Aus der DE 41 03 089 ist ein Dichtungsprofil mit zweireihig übereinander angeordneten Kanälen bekannt, wobei vertikal und schräg durchgehende Stege ausgebildet sind. Bei einem Zusammenpressen ohne einen seitlichen Versatz der gegenüberliegenden Aufnahmenuten verformen sich diese Dichtungsprofile derartig, daß sie sich innerlich verdrehen und ein seitliches Verschieben der Tunnelsegmente zueinander verursachen. Aus der CH 679 510 A5 ist weiters ein Dichtungsprofil mit einreihiger Kanalanordnung bekannt, welches aufgrund seiner relativ flachen Bauweise bei größeren Spaltbreiten keine Abdichtung gegenüber hohen Wasserdrücken erlaubt. Allen diesen Dichtungen ist gemeinsam, daß sie bei einer nachträglichen Spaltöffnung zwischen den Tunnelsegmenten, auch wenn diese nur im Millimeterbereich liegt, einen erheblichen Verlust an Dichtleistung erfahren, weil in Folge des Hystereseverhaltens des elastomeren Kompressionsprofiles die innere Rückstellkraft bei Entlastung deutlich geringer ist als bei der Belastung.From DE 35 26 063 A1 a sealing profile is arranged offset with two rows Channels, which is too soft for high water pressures. The end DE 37 20 919 A1 known sealing profile is relatively flat in height, which is why it is not able to seal high water pressures in larger columns. Seals according to DE 40 26 076 A1 move laterally attacking water pressure, causing the originally intended sealing effect the splayfoot is lifted. From DE 41 03 089 is a sealing profile known with two rows of superimposed channels, where vertical and are formed obliquely through webs. In a compression without deform a lateral offset of the opposite grooves These gaskets such that they twist inside and a lateral Move the tunnel segments to each other cause. From the CH 679 510 A5 is further known a sealing profile with a single-row channel arrangement, which due to its relatively flat design with larger gap widths no sealing against high water pressures allowed. All of these Seals have in common that they in a subsequent gap opening between the tunnel segments, even if they are only in the millimeter range, experience a significant loss of sealing performance because of the hysteresis behavior the elastomeric compression profile at the inner restoring force Relief is significantly lower than during exercise.

Aus der DE 196 03 188 A1 ist weiters ein Dichtungsprofil bekannt, welches im Bereich seines Rückens eine nutförmige Vertiefung aufweist, in die ein streifenförmiges Einsatzteil einklipsbar ist, das aus einem wasserquellenden Material besteht. Falls aufgrund einer nachlassenden Dichtfähigkeit Wasser zu diesem Einsatz eindringt, vergrößert das wasserquellende Material sein Volumen, wodurch zusätzliche Dichtspannungen aufgebaut werden.From DE 196 03 188 A1 a sealing profile is further known, which in the Has a groove-shaped recess in the region of its back, in which a strip-shaped Insert can be clipped, which consists of a water-swelling material consists. If due to a decreasing sealability, water to this Insert penetrates, the water-swelling material increases its volume, causing additional sealing stresses are built up.

Dichtungen aus wasserquellenden Dichtungsmaterialien für den Hoch-, Tief- und Ingenieurbau, insbesondere zur Fugenabdichtung und zum Ausgleich von Dimensionsänderungen von Bauteilen, sind bekannt. Beschrieben sind solche wasserquellenden Dichtungsmaterialien unter anderem beispielsweise in der WO 99/35208, den darin genannten Schriften, der EP 0 692 584 B1 und den in dieser Schrift in diesem Zusammenhang genannten Schriften.Seals of water-swelling sealing materials for the high, low and Civil engineering, in particular for joint sealing and for compensating dimensional changes of components are known. Described are such water-swelling Sealing materials inter alia, for example in WO 99/35208, the documents mentioned therein, EP 0 692 584 B1 and in this Scriptures mentioned in this context.

Weiters ist durch Vorbenutzung eine koextrudierte Dichtung bekannt, die im Bereich ihres Rückens eine koextrudierte wasserquellende Schicht aufweist. Diese Dichtung weist eine einreihige Kanalanordnung auf und besitzt eine ähnliche Struktur wie die aus der CH 679 510 A5 bekannte Dichtung.Furthermore, by prior use, a coextruded seal is known in the field her back has a co-extruded water-swelling layer. These Seal has a single-row channel arrangement and has a similar Structure like the seal known from CH 679 510 A5.

Auch diese herkömmlichen Dichtungsprofile, die ein wasserquellendes Material umfassen, sind nicht in der Lage die Anforderungen an sehr hohe Wasserdrücke zu erfüllen. Zudem erweist sich das Einklipsen der Einlage aus dem wasserquellenden Material des Dichtungsprofils der DE 196 03 188 A1 in der Baustellenpraxis als zu aufwendig.Even these conventional gaskets, which are a water-swelling material include, are not capable of meeting very high water pressures to fulfill. In addition, the clipping of the insert proves to be from the water-swelling Material of the sealing profile of DE 196 03 188 A1 in construction site practice as too expensive.

Aufgabe der Erfindung ist es, ein elastomeres strangförmiges Dichtungsprofil der eingangs genannten Art bereitzustellen, durch das eine sichere und dauerhafte Abdichtung gegen sehr hohe Wasserdrücke ermöglicht wird. Erfindungsgemäß gelingt dies durch ein Dichtungsprofil mit den Merkmalen des Anspruchs 1.The object of the invention is to provide an elastomeric strand-shaped sealing profile of to provide the aforementioned type, by a safe and durable Seal against very high water pressures is possible. According to the invention this is achieved by a sealing profile with the features of claim 1.

Durch den durchgehenden Querbalken mit den seitlich abstehenden Kragarmen kann sich das Dichtungsprofil bei seitlich angreifendem Wasserdruck an der gegenüberliegenden Nutflanke abstützen und wird nur minimal seitlich verschoben. Günstigerweise sind die Kragarme an einem im wesentlichen trapezförmigen Grundkörper des Dichtungsprofils angeordnet. Bei einer solchen zur Aufnahmenut umgekehrten Trapezform kann das Dichtungsprofil so ausgebildet werden, daß das Profil vollständig in der Nut verschwinden kann und die Rückstellkräfte innerhalb von akzeptablen Grenzen bleiben. Die maximalen Größen der Rückstellkräfte sollen nicht zu hoch sein, um beispielsweise die Nuteinfassungen der Tunnelsegmente nicht abplatzen zu lassen. Die gesamte Querschnittsfläche des Dichtungsprofils kann hierbei beispielsweise im Bereich von etwa 90% (+/- 5%) der Querschnittsfläche der Aufnahmenut liegen.Through the continuous crossbeam with the laterally projecting cantilevers can the sealing profile at laterally attacking water pressure on the opposite Support groove edge and is only minimally moved laterally. Conveniently, the cantilevers are at a substantially trapezoidal Basic body of the sealing profile arranged. In such a recording groove reversed trapezoidal shape, the sealing profile can be formed so that the profile can disappear completely in the groove and the restoring forces stay within acceptable limits. The maximum sizes of the restoring forces should not be too high, for example, the Nuteinfassungen the Tunnel segments do not peel off. The total cross-sectional area of the Sealing profile can, for example, in the range of about 90% (+/- 5%) the cross-sectional area of the receiving groove lie.

Der Ausdruck "im wesentlichen trapezförmig" soll sich im Rahmen dieser Schrift auch auf solche Körper (im Querschnitt gesehen) beziehen, bei denen die die beiden parallelen Seiten verbindenden Schenkel Abschnitte mit unterschiedlichen Neigungswinkeln aufweisen, beispielsweise oberhalb und unterhalb der seitlich abstehenden Kragarme.The term "substantially trapezoidal" is intended to be within the scope of this specification also refer to such bodies (seen in cross-section) in which the two parallel sides connecting leg sections with different Have angles of inclination, for example, above and below the side protruding cantilevers.

Die wasserseitige Dichtlippe der im Bereich der Ecken zwischen der Basisseite und der jeweiligen Flankenseite des Dichtungsprofils ausgehenden Dichtlippen wird durch den anstehenden Wasserdruck gegen die Nutflanke gepreßt und dichtet selbsttätig. Bei Vorhandensein von Wasser wird aufgrund der Ausbildung aus einem wasserquellfähigen Material ein zusätzlicher Dichtungsdruck aufgebaut, indem das Volumen der Dichtlippe vergrößert wird. Dadurch wird die Dichtlippe gegen die Nut-Wandung einerseits und die Flankenseite des Dichtungsprofils andererseits gepreßt und dichtet wirksam ab. Günstigerweise können diese Dichtungslippen aus einem weicheren Material als der Grundkörper des Dichtungsprofils bestehen, so daß sich diese Dichtungslippen sehr gut an die Unebenheiten der Betonfläche anpassen können.The water-side sealing lip in the area of the corners between the base side and the respective flank side of the sealing profile outgoing sealing lips is pressed by the upcoming water pressure against the groove flank and seals automatically. In the presence of water is due to training built from a water swellable material an additional sealing pressure, by increasing the volume of the sealing lip. This will cause the sealing lip against the groove wall on the one hand and the flank side of the sealing profile on the other hand pressed and sealed effectively. Conveniently, these can Sealing lips of a softer material than the body of the sealing profile exist, so that these sealing lips very well to the bumps can adjust the concrete surface.

Durch die erfindungsgemäße Ausbildung, die eine Y-förmige Struktur von internen Stegen umfaßt, können hohe Rückstellkräfte in die Nutmitte abgeleitet werden. In einer vorteilhaften Ausführungsform der Erfindung ist hierbei vorgesehen, daß mindestens zwei Reihen von über die Breite des Dichtungsprofils verteilten Kanälen vorgesehen sind.Due to the inventive construction, a Y-shaped structure of internal Includes webs, high restoring forces can be derived in the middle of the groove. In an advantageous embodiment of the invention is provided here, that at least two rows of distributed over the width of the sealing profile Channels are provided.

Vorteilhaft ist es weiters, wenn die Basisseite des Dichtungsprofil als geschlossene Standfläche ausgebildet ist, das heißt ohne von der Standfläche ausgehende, ins Innere des Basisteils reichende Rillennuten. Die Standfläche ist somit im wesentlichen eben ausgebildet. Eine solche vollflächige Standfläche des Dichtungsprofiles erlaubt eine hervorragende Verklebung des Profiles in der Nut, was wiederum zur Stabilität der ausgebildeten Dichtung beiträgt.It is also advantageous if the base side of the sealing profile as a closed Stand surface is formed, that is, without starting from the stand, Rillennuten reaching into the interior of the base part. The footprint is thus essentially just trained. Such full surface footprint of the sealing profile allows an excellent bonding of the profile in the groove, what in turn contributes to the stability of the formed seal.

In einer zweckmäßigen Ausgestaltung der Erfindung kann weiters vorgesehen sein, daß in dem die Rückenseite des Profils ausbildenden Steg eine koextrudierte Einlage aus einem wasserquellenden Material angeordnet ist. Bei Vorhandensein von Wasser, insbesondere in Folge eines Kraftverlustes der Kompressionsdichtung bei Spaltöffnung, vergrößert sich das Volumen dieser Einlage, wodurch eine zusätzliche Druckspannung erzeugt wird, die den Kraftverlust der Kompressionsdichtung ausgleicht oder überkompensiert.In an advantageous embodiment of the invention may further provided be that in the back side of the profile forming web coextruded Insert is arranged from a water-swelling material. In presence of water, in particular due to a loss of force of the compression seal when gap opening, the volume of this insert increases, thereby an additional compressive stress is generated which reduces the force loss of the compression seal compensates or overcompensates.

Weitere Vorteile und Einzelheiten der Erfindung werden im folgenden anhand der beiliegenden Zeichnung erläutert. In dieser zeigen:

Fig. 1
eine schematische Schnittdarstellung von zwei gegenüberliegenden in Seitenflächen von Tunnelsegmenten angebrachten Aufnahmenuten und
Fig. 2
einen Querschnitt durch ein Ausführungsbeispiel eines erfindungsgemäßen Dichtungsprofils.
Further advantages and details of the invention are explained below with reference to the accompanying drawings. In this show:
Fig. 1
a schematic sectional view of two opposite in side surfaces of tunnel segments mounted grooves and
Fig. 2
a cross section through an embodiment of a sealing profile according to the invention.

In Fig. 1 sind schematisch zwei gegenüberliegende Aufnahmenuten 1 in benachbarten Tunnelsegmenten 2 dargestellt. Jedes Tunnelsegment 2 besitzt an seinen Seitenflächen eine umlaufende Aufnahmenut 1, in die Dichtungsprofile einzusetzen sind. Die Nuten besitzen einen Nutgrund 3 und Nutflanken 4. Zwischen den Tunnelsegmenten 2 liegt ein Spalt mit der Breite a vor, der durch die in die Nuten eingesetzten Dichtungsprofile abzudichten ist. Die Nutenmitten der gegenüberliegenden Aufnahmenuten können eine gewissen seitlichen Versatz d aufweisen.In Fig. 1 are schematically two opposite grooves 1 in adjacent Tunnel segments 2 shown. Each tunnel segment 2 has at its Side surfaces a circumferential receiving groove 1, to insert in the sealing profiles are. The grooves have a groove bottom 3 and groove edges 4. Between the Tunnel segments 2 is a gap with the width of a, through which in the grooves sealed sealing profiles is sealed. The groove centers of the opposite Receiving grooves may have a certain lateral offset d.

Das in Fig. 2 im Querschnitt dargestellte Ausführungsbeispiel eines erfindungsgemäßen Dichtungsprofils ist in seinem entspannten Zustand dargestellt und die Aufnahmenut, in welche es einzusetzen ist, ist strichliert angedeutet. Das elastomere, strangförmige Dichtungsprofil umfaßt eine Basisseite 6, eine Rückenseite 7, deren Breite b geringer ist als die Breite B der Basisseite 6. Die Basisseite und die Rückenseite werden von Flankenseiten 8 verbunden.The embodiment shown in Fig. 2 in cross section of an inventive Sealing profile is shown in its relaxed state and the Receiving groove, in which it is to be used, is indicated by dashed lines. The elastomeric, strand-shaped sealing profile comprises a base side 6, a back side 7, whose width b is smaller than the width B of the base side 6. The base side and the back side are connected by flank sides 8.

Das Dichtungsprofil weist einen im Querschnitt gesehen gleichschenklig trapezförmigen Grundkörper 5 auf, dessen parallele Seiten von der Basisseite und von der Rückenseite des Dichtungsprofils gebildet werden. Der Grundkörper 5 wird von einem Querbalken 10 durchsetzt, der an den gegenüberliegenden Flankenseiten 8 des Dichtungsprofils über den Grundkörper 5 vorsteht. Es werden daher an den Schenkeln des trapezförmigen Grundkörpers seitlich abstehende Kragarme 9 gebildet, die in Längsrichtung des Profils durchgehend verlaufen (ein unterbrochener Verlauf in Längsrichtung des Profils wäre denkbar und möglich). Die gedachten Schenkel des trapezförmigen Grundkörpers sind im Bereich der Kragarme 9 strichliert angedeutet. Diese Kragarme 9 sind einteilig mit dem Grundkörper 5 ausgebildet und bestehend aus dem gleichen Material wie der Grundkörper. Die Kragarme 9 liegen in einem Bereich der Flankenseiten, der sowohl von der Basisseite, als auch von der Rückenseite beabstandet ist. Eine koextrudierte Ausbildung dieser Kragarme 9, wobei die Kragarme 9 aus einem Material anderer Härte wie der Grundkörper bestehen können, wäre denkbar und möglich.The sealing profile has an isosceles trapezoidal cross-section Base 5, whose parallel sides of the base side and of the back side of the sealing profile are formed. The main body 5 is traversed by a crossbar 10, which on the opposite flank sides 8 of the sealing profile projects beyond the main body 5. It will therefore on the legs of the trapezoidal body laterally projecting cantilevers 9 formed, which extend in the longitudinal direction of the profile continuously (an interrupted Course in the longitudinal direction of the profile would be conceivable and possible). The imaginary legs of the trapezoidal body are in the range of cantilevers 9 indicated by dashed lines. These cantilevers 9 are integral with the body 5 formed and consisting of the same material as the main body. The cantilevers 9 are located in a region of the flank sides, both of the Base side, as well as from the back side is spaced. A coextruded Training this cantilever arms 9, wherein the cantilevers 9 made of a material other Hardness as the body can exist, would be conceivable and possible.

Die Kragarme 9 schließen im Querschnitt gesehen jeweils einen Winkel von weniger als 30° mit der Basisseite 6 des Dichtungsprofils ein und sind vorzugsweise leicht abwärts geneigt, so daß sie etwa rechtwinklig zur benachbarten Nutenflanke 4 stehen. Der innerhalb des Grundkörpers 5 liegende Abschnitt des Querbalkens 10 verläuft etwa parallel zur Basisseite 6 des Dichtungsprofils. Die über den Grundkörper 5 seitlich vorstehenden Kragarme 9 liegen mit ihren freien Enden an den Nutflanken 4 an.The cantilevers 9 close each seen in cross section at an angle of less as 30 ° with the base side 6 of the sealing profile and are preferably slightly inclined downwards, so that they are approximately at right angles to the adjacent groove flank 4 stand. The lying within the body 5 section of the crossbar 10 runs approximately parallel to the base side 6 of the sealing profile. The over the Main body 5 laterally projecting cantilever arms 9 abut with their free ends the groove edges 4 at.

Im Dichtungsprofil sind oberhalb und unterhalb des Querbalkens 10 jeweils über die Breite des Dichtungsprofils verteilte Kanäle vorgesehen. Oberhalb des Querbalkens 10 ist eine Reihe von drei im Querschnitt dreieckigen Kanälen 11, 12, 13 angeordnet. Unterhalb des Querbalkens ist eine Reihe von der Basisseite benachbarten Kanälen 14 - 17 in Form von jeweils durch eine Wand 18 geschlossenen Rillennuten angeordnet. Die Hochpunkte dieser geschlossenen Rillennuten bilden einen parabelförmigen gedachten Bogen, dessen Maximum in der Profilmitte liegt und der die Ecken 19, 20 zwischen der Basisseite 6 und den benachbarten Flankenseiten 8 schneidet. Zwischen den beiden seitlichen Kanälen 14 und 17 und dem Querbalkens 10 sind weiters im Querschnitt kreisförmige Kanäle 28, 29 angeordnet.In the sealing profile are above and below the crossbar 10 each over provided the width of the sealing profile distributed channels. Above the crossbeam 10 is a series of three triangular channels 11, 12, 13 in cross-section arranged. Below the crossbeam is a row adjacent to the base side Channels 14-17 in the form of each closed by a wall 18 Grooved grooves arranged. The high points of these closed grooves form a parabolic imaginary arch whose maximum in the profile center is and the corners 19, 20 between the base side 6 and the adjacent Flank sides 8 cuts. Between the two lateral channels 14 and 17 and the crossbar 10 are further circular in cross-section channels 28, 29 arranged.

Ausgehend von den Bereichen der Ecken 22, 23 zwischen der Rückenseite 7 und den Flankenseiten 8 sind zwei aufeinanderzulaufende Stege 24, 25 vorgesehen, die zusammen mit dem die Rückenseite bildenden Steg 26 eine dreieckförmige Struktur ausbilden. Ausgehend von der durch die beiden aufeinanderzulaufende Stege gebildeten Spitze dieser dreieckförmigen Struktur ist ein zur Basisseite 6 des Dichtprofils und senkrecht zu dieser verlaufender Steg 27 vorgesehen, wodurch insgesamt eine Y-förmige Struktur gebildet wird. Der Knoten dieser Y-förmigen Struktur liegt im Bereich des Querbalkens 10. Im Bereich des Knotens dieser Y-förmigen Struktur liegt weiters der höchste Punkt des parabelförmigen Bogens, der die Hochpunkte der rillennutenförmigen Kanäle 14 -17 verbindet.Starting from the areas of the corners 22, 23 between the back side 7 and the flank sides 8 are two consecutive webs 24, 25 provided the together with the back side forming web 26 a triangular Train structure. Starting from the two running towards each other Webs formed tip of this triangular structure is one to the base side 6 the sealing profile and perpendicular to this extending web 27 is provided, whereby Overall, a Y-shaped structure is formed. The knot of this Y-shaped Structure is in the area of the crossbeam 10. In the area of the knot this Y-shaped structure is also the highest point of the parabolic Arch that connects the high points of the grooved grooves channels 14 -17.

Durch die trapezförmige Struktur des Grundkörpers 5 in Verbindung mit der durch die Stege 24, 25, 27 gebildeten Y-förmigen Struktur erfolgt eine Konzentration der Rückstellkräfte in die Nutmitte und in die im Bereich der Ecken 19, 20 liegenden Nutecken.Due to the trapezoidal structure of the base body 5 in conjunction with the the webs 24, 25, 27 formed Y-shaped structure is carried out a concentration of Restoring forces in the Nutmitte and in the area of the corners 19, 20 lying Groove corners.

In dem die Rückenseite des Dichtungsprofiles ausbildenden Steg 26 ist eine koextrudierte Einlage 21 aus einem wasserquellenden Material vorgesehen. Günstigerweise besteht diese Einlage aus einer Elastomermischung mit 30 bis 65 Shore A. Der Grundkörper 5 und die Kragarme 9 bestehen bevorzugterweise aus EPDM mit 65 bis 95 Shore A. In which the back side of the sealing profile forming web 26 is a coextruded insert 21 provided from a water-swelling material. Conveniently, this insert consists of an elastomer mixture with 30 to 65 Shore A. The main body 5 and the cantilevers 9 are preferably made EPDM with 65 to 95 Shore A.

An den Flankenseiten 8 des Grundkörpers 5 sind weiters seitlich abstehende, in Längsrichtung des Dichtungsprofils durchgehende Dichtlippen 30, 31 angeordnet, die den Bereichen der Ecken 19, 20 zwischen der Basisseite 6 und der jeweiligen Flankenseite 8 benachbart sind. Im gezeigten Ausführungsbeispiel gehen diese Dichtlippen 30, 31 unmittelbar bei diesen Ecken 19, 20 von den Flankenseiten 8 des Dichtungsprofils aus. Im entspannten Zustand stehen die Dichtlippen 30, 31 über die Nutflanken 4 seitlich hinaus. Die Dichtlippen 30, 31 bestehen bevorzugterweise aus einem wasserquellenden Material und werden durch Koextrusion ausgebildet. Günstigerweise ist hierbei eine Elastomermischung mit einer Härte im Bereich zwischen 30 und 50 Shore A vorgesehen.On the flank sides 8 of the main body 5 are laterally projecting, in Longitudinal direction of the sealing profile continuous sealing lips 30, 31 arranged, the areas of the corners 19, 20 between the base side 6 and the respective Flank side 8 are adjacent. In the embodiment shown, these go Sealing lips 30, 31 immediately at these corners 19, 20 of the flank sides. 8 of the sealing profile. In the relaxed state, the sealing lips 30, 31st laterally beyond the groove flanks 4. The sealing lips 30, 31 are preferably made from a water-swelling material and are made by coextrusion educated. Conveniently, this is an elastomer mixture with a hardness in the range between 30 and 50 Shore A.

Die in Shore A angegebenen Werte stimmen praktisch mit den gemäß IRHD nach ISO-Norm 48 gemessenen Werten überein.The values given in Shore A are practically the same as those according to IRHD ISO standard 48 measured values.

Ein solches Dichtungsprofil erlaubt eine Abdichtung gegen sehr hohe Wasserdrücke. Durch die koextrudierte Ausbildung mit jeweils einem wasserquellfähigen Material für die Einlage 21 und die Dichtlippen 30, 31 wird eine zusätzliche Sicherheit, insbesondere bei einer Vergrößerung der Spaltbreite a zwischen den benachbarten Tunnelsegmenten geschaffen. Such a sealing profile allows a seal against very high water pressures. Due to the coextruded training, each with a water swellable Material for the insert 21 and the sealing lips 30, 31 is an additional security, in particular at an enlargement of the gap width a between the created adjacent tunnel segments.

LegendeLegend zu den Hinweisziffern:to the reference numbers:

11
Aufnahmenutreceiving groove
22
Tunnelsegmenttunnel segment
33
Nutgrundgroove base
44
Nutflankeflank
55
Grundkörperbody
66
Basisseitebase side
77
Rückenseiteback page
88th
Flankenseiteflank side
99
Kragarmcantilever
1010
Querbalkencrossbeam
1111
Kanalchannel
1212
Kanalchannel
1313
Kanalchannel
1414
Kanalchannel
1515
Kanalchannel
1616
Kanalchannel
1717
Kanalchannel
1818
Wandwall
1919
Eckecorner
2020
Eckecorner
2121
Einlageinlay
2222
Eckecorner
2323
Eckecorner
2424
Stegweb
2525
Stegweb
2626
Stegweb
2727
Stegweb
2828
Kanalchannel
2929
Kanalchannel
3030
Dichtlippesealing lip
3131
Dichtlippesealing lip

Claims (13)

  1. An elastomeric, strand-like sealing profile for a tunnel segment which has a circumferential receiving groove, said sealing profile having a base side (6), a rear side (7), whereof the width b is smaller than the width B of the base side (6), and lateral sides (8), which connect the base side (6) to the rear side (7), characterised in that, constructed in a region located between the base side (6) and the rear side (7), there is at least one continuous crossbar (10) which projects beyond the main body (5) of the sealing profile at the opposing lateral sides (8) and forms protruding cantilever arms (9) on both sides for abutting against the respectively adjacent groove flanks (4) of the receiving groove (1) and, arranged on the main body (5) of the sealing profile, there are sealing lips (30, 31) which protrude laterally at the lateral sides (8) of the sealing profile, continue in the longitudinal direction of the profile, are each adjacent to the region of the corner (19, 20) between the base side (6) and the respective lateral side (8) of the sealing profile, preferably extending from the lateral side (8) of the sealing profile directly at this corner (19, 20), and are made from a water-swelling material, and in that, starting from the regions of the corners (22, 23) between the rear side (7) and the lateral sides (8), two webs (24, 25) are provided, which extend towards one another and, together with a web (26) forming the rear side, produce a triangular structure, and, starting from the apex of this triangular structure, which is formed by the two webs (24, 25) extending towards one another, a web (27) which extends to the base side (6) of the sealing profile is provided, thus forming a Y-shaped structure overall.
  2. A sealing profile according to Claim 1, characterised in that, as seen in cross-section, the cantilever arms (9) each form an angle of less than 30° with the base side (6) of the sealing profile and are preferably at an approximate right angle to the adjacent groove flank (4).
  3. A sealing profile according to Claim 1 or Claim 2, characterised in that that portion of the crossbar (10) which is located within the main body (5) of the sealing profile is of a continuous construction in the longitudinal direction of the sealing profile and, as seen in cross-section, is preferably parallel to the base side (6) of the sealing profile.
  4. A sealing profile according to one of Claims 1 to 3, characterised in that the cantilever arms (9) extend continuously in the longitudinal direction of the sealing profile.
  5. A sealing profile according to one of Claims 1 to 4, characterised in that the main body (5) of the sealing profile is constructed substantially in the shape of a trapezium, preferably an isosceles trapezium, and the cantilever arms (9) are preferably made from the same material as this main body (5).
  6. A sealing profile according to one of Claims 1 to 5, characterised in that the base side (6) is constructed as a closed supporting surface.
  7. A sealing profile according to Claim 6, characterised in that, arranged on that region of the sealing profile which adjoins the base side (6), there are a plurality of mutually spaced channels (14, 15, 16, 17) constructed as channel-like grooves which are closed to the base side (6) by a wall (18) and of which the high points lie on an imaginary parabolic arc, the crest of which is located in the region of the profile centre and which extends through the region of the corners (19, 20) between the base side (6) and the lateral sides (8).
  8. A sealing profile according to one of Claims 3 to 7, characterised in that at least two rows of channels (11-17, 28, 29) distributed over the width of the sealing profile are provided, at least one row of channels being provided in each case in the region above and below the crossbar (10).
  9. A sealing profile according to one of Claims 1 to 8, characterised in that a coextruded insert (21) made from a water-swelling material is provided in the web (26) forming the rear side (7) of the sealing profile.
  10. A sealing profile according to one of Claims 1 to 9, characterised in that the sealing lips (30, 31) are made from a softer material than the main body (5) of the sealing profile and are coextruded with this, preferably with a hardness in the range between 30 and 50 Shore A.
  11. A sealing profile according to one of Claims 1 to 10, characterised in that the main body (5) has a hardness in the range between 65 and 95 Shore A and is preferably made from EPDM.
  12. A sealing profile according to one of Claims 1 to 11, characterised in that the insert (21) is made from an elastomer mixture with a hardness in the range between 30 and 65 Shore A.
  13. A sealing profile according to one of Claims 1 to 12, characterised in that the total cross-sectional surface of the sealing profile amounts to 85% to 95%, preferably approximately 90%, of the cross-sectional surface of the receiving groove (1).
EP02021525A 2001-10-11 2002-09-26 Sealing section for tunnel segments Expired - Lifetime EP1302626B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200230275T SI1302626T1 (en) 2001-10-11 2002-09-26 Sealing section for tunnel segments
AT02021525T ATE312272T1 (en) 2001-10-11 2002-09-26 SEALING PROFILE FOR TUNNEL SEGMENTS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT16012001 2001-10-11
AT16012001 2001-10-11

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EP1302626A1 EP1302626A1 (en) 2003-04-16
EP1302626B1 true EP1302626B1 (en) 2005-12-07

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US (1) US6612585B2 (en)
EP (1) EP1302626B1 (en)
DE (1) DE50205176D1 (en)
DK (1) DK1302626T3 (en)
ES (1) ES2254581T3 (en)

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Also Published As

Publication number Publication date
DK1302626T3 (en) 2006-04-03
US6612585B2 (en) 2003-09-02
ES2254581T3 (en) 2006-06-16
DE50205176D1 (en) 2006-01-12
US20030085531A1 (en) 2003-05-08
EP1302626A1 (en) 2003-04-16

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