EP0522912B1 - Profiled sealing strip for tunnel lining segments made from elastomer - Google Patents

Profiled sealing strip for tunnel lining segments made from elastomer Download PDF

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Publication number
EP0522912B1
EP0522912B1 EP19920401754 EP92401754A EP0522912B1 EP 0522912 B1 EP0522912 B1 EP 0522912B1 EP 19920401754 EP19920401754 EP 19920401754 EP 92401754 A EP92401754 A EP 92401754A EP 0522912 B1 EP0522912 B1 EP 0522912B1
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EP
European Patent Office
Prior art keywords
gasket
longitudinal
face
groove
cheeks
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EP19920401754
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German (de)
French (fr)
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EP0522912A1 (en
Inventor
Olivier Colin
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Joint Francais SNC
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Joint Francais SNC
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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

Definitions

  • the invention relates to a profiled elastomeric seal intended to be laid and fixed, in particular by gluing, in a peripheral groove of a tunnel segment or the like.
  • the segments are segments of tube, having a rounded shape and a substantially rectangular or square outline comprising a peripheral groove in which a seal is mounted.
  • the peripheral grooves of the segments generally have a trapezoidal section.
  • the seals intended to be mounted in these grooves therefore generally comprise two parallel flat faces which are connected together by inclined sides, one of these faces being intended to be applied to the bottom of the peripheral groove of the segment , the inclined flanks being applied to the flanks of the groove of the segment, and the other face of the joint being intended to be applied to the corresponding face of a similar joint mounted in the peripheral groove of an adjacent segment.
  • longitudinal grooves and / or channels are formed in the joint and constitute voids allowing the compression and the crushing of the joint in the peripheral groove of the segment when the segments are assembled to each other.
  • a seal for this fate is known from European patent application EP-A-0 414 617
  • the subject of the invention is a seal meeting these criteria.
  • the invention also relates to a joint of this type, which allows a saving of material compared to the joints of the prior art, and which is also simpler to manufacture.
  • a profiled elastomer seal for tunnel segments or the like comprising two substantially parallel faces, one of which is intended to be applied to the bottom of a peripheral groove of the segment and the another is intended to be applied to the corresponding face of a similar joint of an adjacent segment, oblique flanks connecting the two faces together, and longitudinal channels formed inside the joint and delimited by longitudinal jambs of support on the bottom of the groove of the segment, characterized in that said other face of the joint has longitudinal undulations whose vertices are substantially in line with said longitudinal channels and whose hollows are substantially in line with the support legs.
  • This characteristic of the joint according to the invention is favorable to sealing, in particular when the joints of two adjacent segments are not perfectly aligned and superimposed on each other, which very often happens in practice.
  • the corrugations of a joint tend to engage by complementarity of form in the corrugations of the adjacent joint, the tops of the corrugations of a joint being received in the hollows of the corrugations of the other joint , which also makes it possible to avoid or at least reduce the tendency of one joint to slip relative to the other.
  • the amplitude of said undulations is a small fraction of the height of the joint in cross section, typically of the order of 10% of this height, or less.
  • the longitudinal legs extend between the two faces of the joint obliquely with respect to a median longitudinal plane of symmetry, perpendicular to the face of the applicable joint on the bottom of the groove of the segment.
  • Two consecutive longitudinal jambs of the joint have substantially equal obliquities but in opposite directions relative to the plane of symmetry.
  • the longitudinal legs forming the inclined sides of the joint converge from the face of the applicable joint on the bottom of the segment groove.
  • This particular arrangement of the longitudinal legs of the joint ensures a substantially uniform behavior of the joint during its compression in the peripheral groove of the segment.
  • the face of the seal applicable on the bottom of the groove of the segment forms a continuous sole connecting the abovementioned longitudinal legs of the seal to one another.
  • This sole connecting the longitudinal legs prevents the latter from lying down during the compression of the joint, it closes the bubbles or cavities which may be formed in the bottom of the peripheral groove of the segment, which avoids the operations of taking up these grooves, and it increases the bonding surface of the joint in the groove and thus allows a better resistance of the joint to deformation and to extrusion or creep. under the combined effects of the compression forces of the joint, the pressure of the fluid and the stresses due to small positioning faults of the segments relative to each other.
  • At least one of the sides of the joint comprises a sealing lip applicable on the corresponding side of the groove of the segment.
  • This sealing lip is subjected to the pressure of the fluid in respect of which it is necessary to ensure sealing, and is applied by this pressure to the side of the groove of the segment, thereby reinforcing the sealing imparted by the seal.
  • the segment 10 is made of concrete, but could also be metallic. Its rectangular or square outline has a trapezoidal-shaped peripheral groove, with a flat bottom 12 and inclined sides 14, in which is mounted a seal 16 profiled in elastomer having a flat face 18 which is applied and glued to the flat bottom. 12 of the groove of the segment, and a substantially parallel face 19 comprising longitudinal undulations, which is connected to the flat face 18 by inclined sides 20.
  • These inclined flanks 20 comprise, on the side of the flat face 18 of the joint, a sealing lip 22 cooperating with the corresponding inclined flank 14 of the groove of the segment, this sealing lip 22 comprising an oblique face 24, connected to the flat face 18 of the seal and applicable on the side 14 of the groove, and a flat face 26, parallel to the flat face 18 of the seal and connected at the inclined flank 20 thereof.
  • the angles of the sides 14 of the groove of the segment with a perpendicular to the flat bottom 12 of the groove are for example between 12 and 35 °.
  • the longitudinal undulations of the other face 19 of the joint are rounded and have vertices 28 alternating with hollows 30, the vertices and hollows being for example formed by arcs of a circle, respectively convex and concave, interconnected by points d 'inflection.
  • the amplitude of these longitudinal undulations is relatively small compared to the total height of the joint, and can vary for example between 5 and 15% of this total height.
  • the seal according to the invention also comprises longitudinal channels 32, 34, some of which are in the shape of an arch with a rounded top located on the side of the corrugated face 19 of the seal and a flat base located on the side of the flat face 18 of the seal, and the other 34 of which are substantially triangular in shape with a concave rounded base situated on the side of the corrugated face 19 of the seal and with a vertex situated on the side of the opposite flat face of the seal.
  • These longitudinal internal channels 32 and 34 have a relatively large height, greater than half the total height of the joint, (for example of the order of 60% of this total height) and are delimited by longitudinal legs 36, 38 which are oblique to the median longitudinal plane 40 which is a plane of symmetry of the joint, perpendicular to the flat face 18 of this joint.
  • These longitudinal legs 36, 38 make the same angle in absolute value with this plane of symmetry 40 but this angle is reversed from one leg to the next leg.
  • the two outer legs 36 whose outer faces define the sides 20 of the joint, converge from the flat face 18 of the joint, while the two intermediate legs 38 are divergent from this flat face 18, in the example shown .
  • the legs 36, 38 are joined together by a sole 40 whose outer face forms the flat face 18 of the joint.
  • This face 18 thus extends substantially continuously over the entire flat bottom 12 of the groove of the segment, except possibly at the angles connecting together two rectilinear joint sections.
  • these angles can be molded from a hydro-swelling elastomer or having a lower hardness than that of the straight sections of joint. They may also have a smaller cross-sectional area than that of the joint sections.
  • the rounded tops 28 of the undulations of the face 19 of the joint and the corresponding rounded ends of the channels 32, 34 have concordant positions, the tops 28 of the undulations being in line with the rounded ends of the channels 32, 34, while the hollows 30 of the corrugations are in line with the longitudinal legs 38.
  • the formation of the hollows 30 of the undulations results in a saving of material which does not degrade the qualities of the joint, since these hollows 30 are formed substantially at the ends of the support legs 38, that is to say at the level of a relatively thick solid part of the joint.
  • the seals 16 of their peripheral grooves are in contact with one another and are compressed inside these peripheral grooves.
  • the tops of the corrugations of one come to lodge in the hollows of the corrugations of the other, which improves the sealing and prevents the sliding of a joint on the 'other.
  • the sealing lips 26 provided on the sides of the seals also contribute to improving the general sealing.
  • the joint according to the invention may comprise more than two channels 32 in the form of an arch and more than one channel 34 in the form of a triangle, the number of triangular channels 34 being one unit less than that of the channels 32 in the shape of an arch.

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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)
  • Gasket Seals (AREA)

Description

L'invention concerne un joint d'étanchéité profilé en élastomère destiné à être posé et fixé, notamment par collage, dans une gorge périphérique d'un voussoir de tunnel ou analogue.The invention relates to a profiled elastomeric seal intended to be laid and fixed, in particular by gluing, in a peripheral groove of a tunnel segment or the like.

Les tunnels ou puits de grandes dimensions sont en général formés d'éléments assemblés appelés voussoirs entre lesquels sont interposés des joints d'étanchéité. Les voussoirs sont des segments de tube, ayant une forme arrondie et un contour sensiblement rectangulaire ou carré comprenant une gorge périphérique dans laquelle est monté un joint d'étanchéité.Large tunnels or shafts are generally formed of assembled elements called segments between which are interposed seals. The segments are segments of tube, having a rounded shape and a substantially rectangular or square outline comprising a peripheral groove in which a seal is mounted.

Lorsque les voussoirs sont assemblés pour former un tunnel ou un puits, leurs joints d'étanchéité sont en appui les uns sur les autres et sont comprimés dans les gorges, pour former une étanchéité à l'égard d'un fluide environnant et/ou d'un fluide contenu dans le puits ou tunnel ainsi formé.When the segments are assembled to form a tunnel or a well, their seals are in contact with one another and are compressed in the grooves, to form a seal with respect to a surrounding fluid and / or d 'a fluid contained in the well or tunnel thus formed.

Les gorges périphériques des voussoirs ont en général une section trapézoïdale. Les joints d'étanchéité destinés à être montés dans ces gorges comprennent donc en général deux faces plates parallèles qui sont raccordées entre elles par des flancs inclinés, l'une de ces faces étant destinée à être appliquée sur le fond de la gorge périphérique du voussoir, les flancs inclinés s'appliquant sur les flancs de la gorge du voussoir, et l'autre face du joint étant destinée à être appliquée sur la face correspondante d'un joint semblable monté dans la gorge périphérique d'un voussoir adjacent. En outre, des rainures et/ou des canaux longitudinaux sont formés dans le joint et constituent des vides permettant la compression et l'écrasement du joint dans la gorge périphérique du voussoir lorsque les voussoirs sont assemblés les uns aux autres. Un joint d'étanchéité de cette sort est connu de la demande de brevet européen EP-A-0 414 617The peripheral grooves of the segments generally have a trapezoidal section. The seals intended to be mounted in these grooves therefore generally comprise two parallel flat faces which are connected together by inclined sides, one of these faces being intended to be applied to the bottom of the peripheral groove of the segment , the inclined flanks being applied to the flanks of the groove of the segment, and the other face of the joint being intended to be applied to the corresponding face of a similar joint mounted in the peripheral groove of an adjacent segment. In addition, longitudinal grooves and / or channels are formed in the joint and constitute voids allowing the compression and the crushing of the joint in the peripheral groove of the segment when the segments are assembled to each other. A seal for this fate is known from European patent application EP-A-0 414 617

Ces joints sont indémontables après l'assemblage des voussoirs et doivent donc satisfaire à un certain nombre de critères afin d'assurer une étanchéité aussi complète que possible, sur une période de temps très importante.These joints cannot be dismantled after the assembly of the segments and must therefore satisfy a certain number of criteria in order to ensure as complete a seal as possible, over a very long period of time.

L'invention a pour objet un joint répondant à ces critères.The subject of the invention is a seal meeting these criteria.

L'invention a également pour objet un joint de ce type, qui permet une économie de matière par rapport aux joints de la technique antérieure, et qui est également de fabrication plus simple.The invention also relates to a joint of this type, which allows a saving of material compared to the joints of the prior art, and which is also simpler to manufacture.

Elle propose, à cet effet, un joint d'étanchéité profilé en élastomère pour voussoir de tunnel ou analogue, comprenant deux faces sensiblement parallèles dont l'une est destinée à être appliquée sur le fond d'une gorge périphérique du voussoir et dont l'autre est destinée à être appliquée sur la face correspondante d'un joint semblable d'un voussoir adjacent, des flancs obliques reliant les deux faces entre elles, et des canaux longitudinaux formés à l'intérieur du joint et délimités par des jambages longitudinaux d'appui sur le fond de la gorge du voussoir, caractérisé en ce que ladite autre face du joint comporte des ondulations longitudinales dont les sommets sont sensiblement au droit desdits canaux longitudinaux et dont les creux sont sensiblement au droit des jambages d'appui.To this end, it proposes a profiled elastomer seal for tunnel segments or the like, comprising two substantially parallel faces, one of which is intended to be applied to the bottom of a peripheral groove of the segment and the another is intended to be applied to the corresponding face of a similar joint of an adjacent segment, oblique flanks connecting the two faces together, and longitudinal channels formed inside the joint and delimited by longitudinal jambs of support on the bottom of the groove of the segment, characterized in that said other face of the joint has longitudinal undulations whose vertices are substantially in line with said longitudinal channels and whose hollows are substantially in line with the support legs.

Cette caractéristique du joint selon l'invention est favorable à l'étanchéité, notamment lorsque les joints de deux voussoirs adjacents ne sont pas parfaitement alignés et superposés l'un à l'autre, ce qui arrive très souvent dans la pratique. En effet, dans ce cas, les ondulations d'un joint tendent à s'engager par complémentarité de forme dans les ondulations du joint adjacent, les sommets des ondulations d'un joint venant se loger dans les creux des ondulations de l'autre joint, ce qui permet de plus d'éviter ou au moins de réduire la tendance au glissement d'un joint par rapport à l'autre.This characteristic of the joint according to the invention is favorable to sealing, in particular when the joints of two adjacent segments are not perfectly aligned and superimposed on each other, which very often happens in practice. Indeed, in this case, the corrugations of a joint tend to engage by complementarity of form in the corrugations of the adjacent joint, the tops of the corrugations of a joint being received in the hollows of the corrugations of the other joint , which also makes it possible to avoid or at least reduce the tendency of one joint to slip relative to the other.

En outre, la formation de ces ondulations sur la face du joint se traduit par une économie de matière, correspondant aux creux des ondulations, qui entraîne une diminution du coût du joint.In addition, the formation of these undulations on the face of the joint results in a saving of material, corresponding to the hollows of the corrugations, which results in a reduction in the cost of the joint.

L'amplitude desdites ondulations est une faible fraction de la hauteur du joint en section transversale, typiquement de l'ordre de 10% de cette hauteur, ou moins.The amplitude of said undulations is a small fraction of the height of the joint in cross section, typically of the order of 10% of this height, or less.

Selon une autre caractéristique de l'invention, les jambages longitudinaux s'étendent entre les deux faces du joint obliquement par rapport à un plan longitudinal médian de symétrie, perpendiculaire à la face du joint applicable sur le fond de la gorge du voussoir.According to another characteristic of the invention, the longitudinal legs extend between the two faces of the joint obliquely with respect to a median longitudinal plane of symmetry, perpendicular to the face of the applicable joint on the bottom of the groove of the segment.

Deux jambages longitudinaux consécutifs du joint ont des obliquités sensiblement égales mais de sens opposé par rapport au plan de symétrie.Two consecutive longitudinal jambs of the joint have substantially equal obliquities but in opposite directions relative to the plane of symmetry.

Les jambages longitudinaux formant les flancs inclinés du joint sont convergents à partir de la face du joint applicable sur le fond de la gorge du voussoir.The longitudinal legs forming the inclined sides of the joint converge from the face of the applicable joint on the bottom of the segment groove.

Cette disposition particulière des jambages longitudinaux du joint assure un comportement sensiblement uniforme du joint lors de sa compression dans la gorge périphérique du voussoir.This particular arrangement of the longitudinal legs of the joint ensures a substantially uniform behavior of the joint during its compression in the peripheral groove of the segment.

Selon encore une autre caractéristique de l'invention, la face du joint applicable sur le fond de la gorge du voussoir forme une semelle continue reliant entre eux les jambages longitudinaux précités du joint.According to yet another characteristic of the invention, the face of the seal applicable on the bottom of the groove of the segment forms a continuous sole connecting the abovementioned longitudinal legs of the seal to one another.

Cette caractéristique améliore largement les qualités du joint.This characteristic greatly improves the qualities of the joint.

Cette semelle reliant les jambages longitudinaux évite que ces derniers se couchent lors de la compression du joint, elle obture les bulles ou cavités qui peuvent être formées dans le fond de la gorge périphérique du voussoir, ce qui évite les opérations de reprise de ces gorges, et elle augmente la surface de collage du joint dans la gorge et permet ainsi une meilleure tenue du joint à la déformation et à l'extrusion ou au fluage sous les effets conjugués des efforts de compression du joint, de la pression du fluide et des contraintes dues aux petits défauts de positionnement des voussoirs les uns par rapport aux autres.This sole connecting the longitudinal legs prevents the latter from lying down during the compression of the joint, it closes the bubbles or cavities which may be formed in the bottom of the peripheral groove of the segment, which avoids the operations of taking up these grooves, and it increases the bonding surface of the joint in the groove and thus allows a better resistance of the joint to deformation and to extrusion or creep. under the combined effects of the compression forces of the joint, the pressure of the fluid and the stresses due to small positioning faults of the segments relative to each other.

Selon encore une autre caractéristique de l'invention, au moins un des flancs du joint comprend une lèvre d'étanchéité applicable sur le flanc correspondant de la gorge du voussoir.According to yet another characteristic of the invention, at least one of the sides of the joint comprises a sealing lip applicable on the corresponding side of the groove of the segment.

Cette lèvre d'étanchéité est soumise à la pression du fluide à l'égard duquel il faut assurer l'étanchéité, et est appliquée par cette pression sur le flanc de la gorge du voussoir en renforçant ainsi l'étanchéité conférée par le joint.This sealing lip is subjected to the pressure of the fluid in respect of which it is necessary to ensure sealing, and is applied by this pressure to the side of the groove of the segment, thereby reinforcing the sealing imparted by the seal.

D'autres caractéristiques, détails et avantages de l'invention apparaitront plus clairement à la lecture de la description qui suit, faite à titre d'exemple en référence au dessin annexé, dans lequel la figure unique est une vue en coupe transversale d'un joint d'étanchéité selon l'invention, monté dans une gorge périphérique d'un voussoir.Other characteristics, details and advantages of the invention will appear more clearly on reading the description which follows, given by way of example with reference to the appended drawing, in which the single figure is a cross-sectional view of a seal according to the invention, mounted in a peripheral groove of a segment.

Le voussoir 10, représenté au dessin, est réalisé en béton, mais pourrait également être métallique. Son contour rectangulaire ou carré comporte une gorge périphérique de forme trapézoïdale, à fond plat 12 et à flancs inclinés 14, dans laquelle est monté un joint d'étanchéité 16 profilé en élastomère comportant une face plate 18 qui est appliquée et collée sur le fond plat 12 de la gorge du voussoir, et une face sensiblement parallèle 19 comportant des ondulations longitudinales, qui est reliée à la face plate 18 par des flancs inclinés 20.The segment 10, shown in the drawing, is made of concrete, but could also be metallic. Its rectangular or square outline has a trapezoidal-shaped peripheral groove, with a flat bottom 12 and inclined sides 14, in which is mounted a seal 16 profiled in elastomer having a flat face 18 which is applied and glued to the flat bottom. 12 of the groove of the segment, and a substantially parallel face 19 comprising longitudinal undulations, which is connected to the flat face 18 by inclined sides 20.

Ces flancs inclinés 20 comportent, du côté de la face plate 18 du joint, une lèvre d'étanchéité 22 coopérant avec le flanc incliné 14 correspondant de la gorge du voussoir, cette lèvre d'étanchéité 22 comprenant une face oblique 24, reliée à la face plate 18 du joint et applicable sur le flanc 14 de la gorge, et une face plate 26, parallèle à la face plate 18 du joint et reliée au flanc incliné 20 de celui-ci. Les angles des flancs 14 de la gorge du voussoir avec une perpendiculaire au fond plat 12 de la gorge, sont par exemple compris entre 12 et 35°.These inclined flanks 20 comprise, on the side of the flat face 18 of the joint, a sealing lip 22 cooperating with the corresponding inclined flank 14 of the groove of the segment, this sealing lip 22 comprising an oblique face 24, connected to the flat face 18 of the seal and applicable on the side 14 of the groove, and a flat face 26, parallel to the flat face 18 of the seal and connected at the inclined flank 20 thereof. The angles of the sides 14 of the groove of the segment with a perpendicular to the flat bottom 12 of the groove, are for example between 12 and 35 °.

Les ondulations longitudinales de l'autre face 19 du joint sont arrondies et présentent des sommets 28 alternant avec des creux 30, les sommets et les creux étant par exemple formés par des arcs de cercle respectivement convexes et concaves, reliés entre eux par des points d'inflexion. L'amplitude de ces ondulations longitudinales est relativement faible par rapport à la hauteur totale du joint, et peut varier par exemple entre 5 et 15% de cette hauteur totale.The longitudinal undulations of the other face 19 of the joint are rounded and have vertices 28 alternating with hollows 30, the vertices and hollows being for example formed by arcs of a circle, respectively convex and concave, interconnected by points d 'inflection. The amplitude of these longitudinal undulations is relatively small compared to the total height of the joint, and can vary for example between 5 and 15% of this total height.

Le joint selon l'invention comprend également des canaux longitudinaux 32, 34 dont les uns 32 sont en forme d'arche avec un sommet arrondi situé du côté de la face ondulée 19 du joint et une base plate située du côté de la face plate 18 du joint, et dont les autres 34 sont de forme sensiblement triangulaire à base arrondie concave située du côté de la face ondulée 19 du joint et à sommet situé du côté de la face plate opposée du joint.The seal according to the invention also comprises longitudinal channels 32, 34, some of which are in the shape of an arch with a rounded top located on the side of the corrugated face 19 of the seal and a flat base located on the side of the flat face 18 of the seal, and the other 34 of which are substantially triangular in shape with a concave rounded base situated on the side of the corrugated face 19 of the seal and with a vertex situated on the side of the opposite flat face of the seal.

Ces canaux internes longitudinaux 32 et 34 ont une hauteur relativement importante, supérieure à la moitié de la hauteur totale du joint, (par exemple de l'ordre de 60% de cette hauteur totale) et sont délimités par des jambages longitudinaux 36, 38 qui sont obliques par rapport au plan longitudinal médian 40 qui est un plan de symétrie du joint, perpendiculaire à la face plate 18 de ce joint. Ces jambages longitudinaux 36, 38 font un même angle en valeur absolue avec ce plan de symétrie 40 mais cet angle est inversé d'un jambage au jambage suivant. Les deux jambages 36 extérieurs dont les faces externes définissent les flancs 20 du joint, sont convergents à partir de la face plate 18 du joint, tandis que les deux jambages intermédiaires 38 sont divergents à partir de cette face plate 18, dans l'exemple représenté.These longitudinal internal channels 32 and 34 have a relatively large height, greater than half the total height of the joint, (for example of the order of 60% of this total height) and are delimited by longitudinal legs 36, 38 which are oblique to the median longitudinal plane 40 which is a plane of symmetry of the joint, perpendicular to the flat face 18 of this joint. These longitudinal legs 36, 38 make the same angle in absolute value with this plane of symmetry 40 but this angle is reversed from one leg to the next leg. The two outer legs 36 whose outer faces define the sides 20 of the joint, converge from the flat face 18 of the joint, while the two intermediate legs 38 are divergent from this flat face 18, in the example shown .

Cette disposition et la présence du canal triangulaire 34 entre les deux jambages intermédiaires 38 font que les jambages 36, 38 ont une épaisseur sensiblement constante.This arrangement and the presence of the triangular channel 34 between the two intermediate legs 38 cause the legs 36, 38 to have a substantially constant thickness.

Les jambages 36, 38 sont réunis entre eux par une semelle 40 dont la face extérieure forme la face plate 18 du joint. Cette face 18 s'étend ainsi de façon sensiblement continue sur tout le fond plat 12 de la gorge du voussoir, sauf éventuellement aux angles reliant entre eux deux tronçons rectilignes de joint.The legs 36, 38 are joined together by a sole 40 whose outer face forms the flat face 18 of the joint. This face 18 thus extends substantially continuously over the entire flat bottom 12 of the groove of the segment, except possibly at the angles connecting together two rectilinear joint sections.

De façon connue, ces angles peuvent être moulés en un élastomère hydrogonflant ou ayant une dureté inférieure à celle des tronçons rectilignes de joint. Ils peuvent également avoir une section d'aire inférieure à celle des tronçons de joint.In known manner, these angles can be molded from a hydro-swelling elastomer or having a lower hardness than that of the straight sections of joint. They may also have a smaller cross-sectional area than that of the joint sections.

Dans le joint selon l'invention, les sommets arrondis 28 des ondulations de la face 19 du joint et les extrémités arrondies correspondantes des canaux 32, 34 ont des positions concordantes, les sommets 28 des ondulations étant au droit des extrémités arrondies des canaux 32, 34, tandis que les creux 30 des ondulations sont au droit des jambages longitudinaux 38. De cette façon, la formation des creux 30 des ondulations se traduit par une économie de matière qui ne dégrade pas les qualités du joint, puisque ces creux 30 sont formés sensiblement aux extrémités des jambages d'appui 38, c'est-à-dire au niveau d'une partie pleine relativement épaisse du joint.In the joint according to the invention, the rounded tops 28 of the undulations of the face 19 of the joint and the corresponding rounded ends of the channels 32, 34 have concordant positions, the tops 28 of the undulations being in line with the rounded ends of the channels 32, 34, while the hollows 30 of the corrugations are in line with the longitudinal legs 38. In this way, the formation of the hollows 30 of the undulations results in a saving of material which does not degrade the qualities of the joint, since these hollows 30 are formed substantially at the ends of the support legs 38, that is to say at the level of a relatively thick solid part of the joint.

Lorsque des voussoirs sont assemblés entre eux, les joints 16 de leurs gorges périphériques sont en appui les uns sur les autres et sont comprimés à l'intérieur de ces gorges périphériques. Lorsque deux joints ne sont pas exactement alignés et superposés, les sommets des ondulations de l'un viennent se loger dans les creux des ondulations de l'autre, ce qui améliore l'étanchéité et s'oppose au glissement d'un joint sur l'autre. Les lèvres d'étanchéité 26 prévues sur les flancs des joints contribuent également à améliorer l'étanchéité générale.When segments are assembled together, the seals 16 of their peripheral grooves are in contact with one another and are compressed inside these peripheral grooves. When two joints are not exactly aligned and superimposed, the tops of the corrugations of one come to lodge in the hollows of the corrugations of the other, which improves the sealing and prevents the sliding of a joint on the 'other. The sealing lips 26 provided on the sides of the seals also contribute to improving the general sealing.

Bien entendu, le joint selon l'invention peut comprendre plus de deux canaux 32 en forme d'arche et plus d'un canal 34 en forme de triangle, le nombre de canaux 34 triangulaires étant inférieur d'une unité à celui des canaux 32 en forme d'arche.Of course, the joint according to the invention may comprise more than two channels 32 in the form of an arch and more than one channel 34 in the form of a triangle, the number of triangular channels 34 being one unit less than that of the channels 32 in the shape of an arch.

Claims (11)

  1. A profiled gasket of elastomeric material for the arch brick of a tunnel or the like, comprising two substantially parallel faces (18, 19) one of which is intended to be applied to the bottom (12) of a peripheral groove in the arch brick (10) while the other is intended to be applied to the corresponding face of a similar gasket of an adjacent arch brick, oblique flanks (20) connecting the two faces inter se, and longitudinal channels (32, 34) formed on the inside of the gasket and defined by longitudinal cheek members (36, 38) applied to the bottom of the groove in the arch brick, characterised in that the said other face (19) of the gasket has longitudinal undulations of which the peaks (28) are substantially at right-angles to the longitudinal channels (32, 34) and of which the hollows (30) are substantially at right-angles to the bearing cheeks (38).
  2. A gasket according to Claim 1, characterised in that the said undulations are formed, in the cross-section of the gasket, by convex arcs of a circle forming the aforesaid peaks (28), connected to concave arcs of a circle forming the aforesaid hollows (30).
  3. A gasket according to Claim 1 or 2, characterised in that the amplitude of the said undulations is a small fraction of the height of the gasket in cross-section.
  4. A gasket according to one of the preceding Claims, characterised in that the longitudinal cheeks (36, 38) extend between the two faces of the gasket obliquely in relation to a median longitudinal plane (40) of symmetry perpendicular to the face (18) of the gasket which can be applied against the bottom of the groove in the arch brick.
  5. A gasket according to Claim 4, characterised in that two consecutive longitudinal cheeks (36, 38) are of substantially equal obliquity but in opposite directions in relation to the plane of symmetry (40).
  6. A gasket according to Claim 4 or 5, characterised in that the longitudinal cheeks (36) forming the inclined flanks of the gasket are convergent with effect from that face (18) of the gasket which can be applied against the bottom of the groove in the arch brick.
  7. A gasket according to one of the preceding Claims, characterised in that the longitudinal cheeks (36, 38) are of substantially constant thickness.
  8. A gasket according to one of the preceding Claims, characterised in that the longitudinal channels (32, 34) bounded by the said cheeks are of a height which is at least equal to half the height of the gasket.
  9. A gasket according to one of the preceding Claims, characterised in that the channels bounded by the longitudinal cheeks are alternately shaped like an arch with a rounded top orientated towards the undulating face (19) of the gasket and a substantially triangular shape with a rounded base which is orientated at the said undulating face (19) of the gasket.
  10. A gasket according to one of the preceding Claims, characterised in that its faces (18) which can be applied against the bottom of the groove in the arch brick forms a continuous sole plate (40) connecting the longitudinal cheeks (36, 38) inter se.
  11. A gasket according to one of the preceding Claims, characterised in that at least one of its flanks (20) comprises a sealing-tight lip (22) which can be applied against the corresponding flank (14) of the groove in the arch brick.
EP19920401754 1991-07-12 1992-06-23 Profiled sealing strip for tunnel lining segments made from elastomer Expired - Lifetime EP0522912B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9108837 1991-07-12
FR9108837A FR2678982B1 (en) 1991-07-12 1991-07-12 PROFILED ELASTOMERIC GASKET FOR TUNNEL SEAT.

Publications (2)

Publication Number Publication Date
EP0522912A1 EP0522912A1 (en) 1993-01-13
EP0522912B1 true EP0522912B1 (en) 1995-10-18

Family

ID=9415056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920401754 Expired - Lifetime EP0522912B1 (en) 1991-07-12 1992-06-23 Profiled sealing strip for tunnel lining segments made from elastomer

Country Status (4)

Country Link
EP (1) EP0522912B1 (en)
DE (2) DE522912T1 (en)
ES (1) ES2037648T1 (en)
FR (1) FR2678982B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712655B1 (en) * 1993-11-19 1996-02-02 Tuyaux Bonna Seal.
DE19603188A1 (en) * 1995-02-01 1996-08-08 Phoenix Ag Elastomer seal arrangements between segments of tubular tunnel
NL1000310C2 (en) * 1995-05-04 1996-11-05 Trelleborg Bakker B V Sealing profile for construction segments, especially tunnel segments.
ATE230064T1 (en) * 1997-07-08 2003-01-15 Phoenix Ag SEALING ARRANGEMENT FOR TUNNEL SEGMENTS
DE19937344C1 (en) * 1999-08-11 2001-02-22 Franz Baumgartner Pressure compensation ring
ES2254581T3 (en) 2001-10-11 2006-06-16 Datwyler Ag Schweizerische Kabel-, Gummi- Und Kunststoffwerke SHUTTER PROFILE FOR TUNNEL SEGMENTS.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT337764B (en) * 1974-12-02 1977-07-25 Semperit Ag WALL COVERING
DE3829286A1 (en) * 1987-09-05 1989-03-23 Phoenix Ag Sealing profile for tunnel segments
DE9017615U1 (en) * 1989-08-19 1991-03-28 Phoenix Ag, 2100 Hamburg Sealing profile for tunnel segments
FR2651275B1 (en) * 1989-08-25 1991-12-06 Joint Francais PROFILED ELASTOMERIC GASKET FOR TUNNEL SEAT.

Also Published As

Publication number Publication date
FR2678982B1 (en) 1993-11-05
EP0522912A1 (en) 1993-01-13
FR2678982A1 (en) 1993-01-15
DE522912T1 (en) 1993-07-08
ES2037648T1 (en) 1993-07-01
DE69205506D1 (en) 1995-11-23

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