EP1984569B1 - Device for protecting a cable or the like of a construction or civil engineering project from fire - Google Patents

Device for protecting a cable or the like of a construction or civil engineering project from fire Download PDF

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Publication number
EP1984569B1
EP1984569B1 EP07730973A EP07730973A EP1984569B1 EP 1984569 B1 EP1984569 B1 EP 1984569B1 EP 07730973 A EP07730973 A EP 07730973A EP 07730973 A EP07730973 A EP 07730973A EP 1984569 B1 EP1984569 B1 EP 1984569B1
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EP
European Patent Office
Prior art keywords
cable
blanket
fire protection
inner blanket
civil engineering
Prior art date
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Application number
EP07730973A
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German (de)
French (fr)
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EP1984569A2 (en
Inventor
Jérémie BAUMGARTNER
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Eiffage Travaux Publics SAS
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Eiffage Travaux Publics SAS
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Priority to PL07730973T priority Critical patent/PL1984569T3/en
Publication of EP1984569A2 publication Critical patent/EP1984569A2/en
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Publication of EP1984569B1 publication Critical patent/EP1984569B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/10—Ducts
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
    • 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
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/92—Fire or heat protection feature
    • 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
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/92—Fire or heat protection feature
    • Y10S428/921—Fire or flameproofing
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
    • Y10T428/1314—Contains fabric, fiber particle, or filament made of glass, ceramic, or sintered, fused, fired, or calcined metal oxide, or metal carbide or other inorganic compound [e.g., fiber glass, mineral fiber, sand, etc.]

Definitions

  • the present invention relates to a fire protection device for a cable or the like of a civil engineering structure, of the type comprising a mat of thermally insulating material wrapped around the cable.
  • the invention applies in particular to the bridge deck maintenance cables such as guyed and extradossed cables, as well as the prestressed cables extending outside the deck deck concrete.
  • the specifications for the construction of bridges include fire protection requirements for the bridge deck maintenance cables. For example, the exposure of a cable at a temperature of 1000 ° C for one hour should not cause an increase in the temperature of the cable itself beyond 100 ° C.
  • the invention aims to provide an economical solution, reliable and easy to implement, even around cables already in place, which is capable of meeting the most stringent requirements in terms of fire safety.
  • the subject of the invention is a fire protection device of the aforementioned type, characterized by the characterizing part of claim 1.
  • the invention also relates to a civil engineering structure, of the type comprising a wired structure, characterized in that at least one cable or the like of the wired structure is provided with a fire protection device such as as defined above.
  • a fire protection device such as as defined above.
  • the invention particularly relates to a bridge, of the type comprising an apron, towers and a set of cables or similar suspension of the deck to the pylons, characterized in that at least one cable is provided with a device fire protection as defined above.
  • the pylon associated with said cable has at its upper part a deviating cable tube, and the protective device extends to the deviating tube.
  • the cable 1 shown in Figures 1 and 2 essentially consists of a large number of strands 2 contiguous to each other, for example, as shown, in a hexagonal general outline.
  • Each strand 2 itself consists of several elementary strands 3 of steel surrounded by a sheath 4.
  • a protection device 5 is used which will be described below.
  • the device 5 comprises an inner protective mat 6 made of thermally resistant material, wrapped around the cable and closed edge to edge, along a generatrix 7. This inner mat is held in place by a series of adhesive strips 8 made of glass fibers.
  • the device 5 also comprises an outer protection mat 9 also made of thermally resistant material.
  • This outer mat is wound around the inner mattress 6, with a recovery zone 10 between its two marginal regions. The whole of this zone 10 is firmly fixed by gluing by means of a layer of thermally resistant glue 11 such as the glue marketed under the trademark "MILLE”.
  • the fixing of the outer mattress 9 is completed by strapping by means of a series of steel strips 12 arranged at regular intervals.
  • similar strapping (not shown) can complete the fixing of the inner mattress 6 before the introduction of the outer mattress.
  • each mattress consists of a succession of sections placed end to end, and the junction planes 13A of the outer mattress are offset longitudinally with respect to those 13B of the sections of the inner mattress.
  • each of the two mattresses consists of a product marketed under the trademark "MICROTHERM”. It is a microporous structure consisting of silica particles, metal oxides and glass filaments, this thermally insulating structure being arranged in a stitched glass fabric envelope forming a flexible mattress.
  • Such a set of two superimposed mattresses can withstand 1000 ° C in steady state and can withstand 1200 ° C for brief exposures to a fire.
  • the device can be completed by a second inner mattress similar to the mattress 6, interposed between the mattress and the outer mattress, and provided with fixing means such as the adhesive strips 8.
  • the fire protection device is completed by an outer shell 14 made of HDPE (high density polyethylene) having on the one hand a protective function of the insulation blankets against moisture, and on the other hand an aesthetic function.
  • HDPE high density polyethylene
  • the shell 14 itself consists of two identical half-shells 14A, 14B comprising along one end generator a recess 15 and, along the other end generator, a rib 16 adapted to s' snap into the recess 15. To seal, strips 17 forming gaskets are interposed between the facing faces of the two half-shells.
  • the shell 14 consists of a succession of sections welded end to end by welding to the mirror.
  • the Figure 3 represents an end of an angled deflector tube 18 in which passes the middle portion of the cable, at the top of the associated pylon 19.
  • the tube 18 has an end portion 20 which projects out of the pylon.
  • the space remaining free in the tube 18 is filled with a grout of cement 21.
  • the combination of the two mattresses 6 and 9 penetrates into a protective tube 22 fixed to the pylon, which surrounds the projecting portion 20 and extends beyond it.
  • a similar fire protection 23 is disposed around the portion 20.
  • the continuity between this additional protection and the outer mat 9 of the current portion of the cable is obtained by means of a connector 24 made of the same MICROTHERM material.
  • the shell 14 stops at a short distance from the inlet of the protection tube 22, and the aesthetic continuity is obtained by means of a section of HDPE tube 25 fixed in the extension of the tube 22, and in which fits the end of the shell 14.
  • the fire protection is provided to the inside of the deviator tube and has no weak point at this location.
  • the insulation blankets are extended to the anchoring device provided at each end of the cable in the bridge deck.
  • the protection device described above is reliable and simple to implement, both during the construction of the bridge that during a possible maintenance or repair operation, or to improve the protection or fire initially planned during the construction of the bridge.
  • the double fastening 10-11, 12 of the outer mattress 9 provides a high degree of safety of the fire protection device.
  • each section of the shell 14 may consist of more than two sectors, for example three or four sectors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Insulated Conductors (AREA)
  • Electric Cable Installation (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Details Of Indoor Wiring (AREA)
  • Building Environments (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

A protective device (10) for use in the protection of at least a portion of an elongated article (50) which includes a main body (12), first and second parts (22), (27) which are connectible together such that, in an assembled position the main body has a chamber therein (14). The first and second parts each have two longitudinal extending side edge portions (23), (28), respective side edge portions of the first part being adapted to cooperate with the respective side edge portions of the second part to connect the two parts together in the assembled position.

Description

La présente invention est relative à un dispositif de protection au feu d'un câble ou analogue d'ouvrage d'art ou de génie civil, du type comprenant un matelas en matériau thermiquement isolant enroulé autour du câble.The present invention relates to a fire protection device for a cable or the like of a civil engineering structure, of the type comprising a mat of thermally insulating material wrapped around the cable.

L'invention s'applique notamment aux câbles de maintien de tabliers de ponts tels que les câbles haubanés et extradossés, ainsi que les câbles précontraints s'étendant à l'extérieur du béton du tablier du pont.The invention applies in particular to the bridge deck maintenance cables such as guyed and extradossed cables, as well as the prestressed cables extending outside the deck deck concrete.

On appelle ici « câble ou analogue » les éléments métalliques aériens utilisés en traction dans les ouvrages d'art et le génie civil, tels que les câbles, les barres, tirants ou suspentes métalliques. Tous ces éléments seront désignés dans la suite, de façon générique, par le mot « câble », et l'invention sera explicitée dans le contexte des câbles de maintien de tabliers de ponts.The term "cable or the like" is used here to refer to the aerial metal elements used in traction in engineering structures and civil engineering works, such as cables, bars, tie-rods or metal hangers. All these elements will be designated in the following, generically, by the word "cable", and the invention will be explained in the context of the bridge deck maintenance cables.

Les cahiers des charges de construction des ponts comportent des prescriptions de protection au feu des câbles de maintien du tablier du pont. Par exemple, l'exposition d'un câble à une température de 1000°C pendant une heure ne doit pas provoquer une augmentation de la température du câble lui-même au-delà de 100°C.The specifications for the construction of bridges include fire protection requirements for the bridge deck maintenance cables. For example, the exposure of a cable at a temperature of 1000 ° C for one hour should not cause an increase in the temperature of the cable itself beyond 100 ° C.

Diverses solutions ont été proposées pour satisfaire à ces exigences. Il s'agit notamment d'une structure comprenant deux tubes disposés l'un dans l'autre avec une couche intermédiaire de mortier réfractaire ou d'un matériau à base de fibres céramiques aiguilletées. Une autre solution est proposée dans WO 2004/048832 A .Various solutions have been proposed to meet these requirements. It is in particular a structure comprising two tubes arranged one inside the other with an intermediate layer of refractory mortar or a material based on needled ceramic fibers. Another solution is proposed in WO 2004/048832 A .

Cependant, ces solutions connues sont difficiles à mettre en oeuvre et coûteuses, et le dispositif est très lourd.However, these known solutions are difficult to implement and expensive, and the device is very heavy.

Par ailleurs, il est connu d'utiliser des matelas de protection au feu dans diverses applications, mais aucune mise en oeuvre adaptée aux conditions particulières des câbles de ponts suspendus n'a été proposée jusqu'à présent.Moreover, it is known to use fire protection mats in various applications, but no implementation adapted to the particular conditions of the suspension bridge cables has been proposed so far.

L'invention a pour but de fournir une solution économique, fiable.et facile à mettre en oeuvre, même autour de câbles déjà en place, qui soit capable de répondre aux exigences les plus sévères en matière de sécurité contre l'incendie.The invention aims to provide an economical solution, reliable and easy to implement, even around cables already in place, which is capable of meeting the most stringent requirements in terms of fire safety.

A cet effet, l'invention a pour objet un dispositif de protection au feu du type précité, caractérisé par la partie caractérisante de la revendication 1.For this purpose, the subject of the invention is a fire protection device of the aforementioned type, characterized by the characterizing part of claim 1.

D'autres caractéristiques du dispositif suivant l'invention sont décrites dans les revendications 2 à 11.Other features of the device according to the invention are described in claims 2 to 11.

L'invention a également pour objet un ouvrage d'art ou dé génie civil, du type comprenant une structure câblée, caractérisé en ce qu'au moins un câble ou analogue de la structure câblée est muni d'un dispositif de protection au feu tel que défini ci-dessus. L'expression « structure câblée » doit s'entendre dans son sens général expliqué plus haut au sujet de l'expression « câble bu analogue ».The invention also relates to a civil engineering structure, of the type comprising a wired structure, characterized in that at least one cable or the like of the wired structure is provided with a fire protection device such as as defined above. The term "cable structure" should be understood in its general sense explained above with respect to the term "analog cable".

L'invention a, en particulier, pour objet un pont, du type comprenant un tablier, des pylônes et un ensemble de câbles ou analogues de suspension du tablier aux pylônes, caractérisé en ce qu'au moins un câble est muni d'un dispositif de protection au feu tel que défini ci-dessus.The invention particularly relates to a bridge, of the type comprising an apron, towers and a set of cables or similar suspension of the deck to the pylons, characterized in that at least one cable is provided with a device fire protection as defined above.

Dans un mode de réalisation particulier de ce pont, le pylône associé audit câble comporte à sa partie supérieure un tube déviateur du câble, et le dispositif de protection se prolonge jusque sur le tube déviateur.In a particular embodiment of this bridge, the pylon associated with said cable has at its upper part a deviating cable tube, and the protective device extends to the deviating tube.

Un mode de réalisation de l'invention va maintenant être décrit-en regard du dessin annexé, sur lequel :

  • la Figure 1 représente schématiquement, avec des arrachements, un câble ou analogue d'ouvrage d'art ou de génie civil de pont équipé d'un dispositif de protection au feu suivant l'invention ;
  • la Figure 2 est une vue en coupe transversale prise suivant la ligne II-II de la Figure 1, à plus grande échelle ; et
  • la Figure 3 est une vue partielle en coupe longitudinale du passage du câble à travers le tube déviateur du pylône associé.
An embodiment of the invention will now be described with reference to the appended drawing, in which:
  • the Figure 1 schematically shows, with detachments, a cable or the like of a civil engineering structure or deck engineering equipped with a fire protection device according to the invention;
  • the Figure 2 is a cross-sectional view taken along line II-II of the Figure 1 , on a larger scale ; and
  • the Figure 3 is a partial view in longitudinal section of the passage of the cable through the deviating tube of the associated pylon.

Le câble 1 représenté aux Figures 1 et 2 est essentiellement constitué d'un grand nombre de torons 2 accolés les uns aux autres, par exemple, comme représenté, suivant un contour général hexagonal. Chaque toron 2 est lui-même constitué de plusieurs brins élémentaires 3 en acier entourés d'une gaine 4.The cable 1 shown in Figures 1 and 2 essentially consists of a large number of strands 2 contiguous to each other, for example, as shown, in a hexagonal general outline. Each strand 2 itself consists of several elementary strands 3 of steel surrounded by a sheath 4.

Pour assurer la protection au feu du câble 1, on utilise un dispositif de protection 5 qui va être décrit ci-dessous.To provide fire protection for the cable 1, a protection device 5 is used which will be described below.

Le dispositif 5 comprend un matelas de protection intérieur 6 en matériau thermiquement résistant, enroulé autour du câble et refermé bord à bord, suivant une génératrice 7. Ce matelas intérieur est maintenu en place par une série de bandes adhésives 8 en fibres de verre.The device 5 comprises an inner protective mat 6 made of thermally resistant material, wrapped around the cable and closed edge to edge, along a generatrix 7. This inner mat is held in place by a series of adhesive strips 8 made of glass fibers.

Le dispositif 5 comprend également un matelas de protection extérieur 9 également en matériau thermiquement résistant. Ce matelas extérieur est enroulé autour du matelas intérieur 6, avec une zone de recouvrement 10 entre ses deux régions marginales. La totalité de cette zone 10 est fermement fixée par collage au moyen d'une couche de colle 11 thermiquement résistante telle que la colle commercialisée sous la marque « MILLE ».The device 5 also comprises an outer protection mat 9 also made of thermally resistant material. This outer mat is wound around the inner mattress 6, with a recovery zone 10 between its two marginal regions. The whole of this zone 10 is firmly fixed by gluing by means of a layer of thermally resistant glue 11 such as the glue marketed under the trademark "MILLE".

De plus, la fixation du matelas extérieur 9 est complétée par un cerclage au moyen d'une série de feuillards d'acier 12 disposés à intervalles réguliers.In addition, the fixing of the outer mattress 9 is completed by strapping by means of a series of steel strips 12 arranged at regular intervals.

Eventuellement, des cerclages analogues (non représentés) peuvent compléter la fixation du matelas intérieur 6 avant la mise en place du matelas extérieur.Optionally, similar strapping (not shown) can complete the fixing of the inner mattress 6 before the introduction of the outer mattress.

Comme on le voit sur la Figure 2, la génératrice moyenne de la zone collée 10 est décalée angulairement par rapport aux bords jointifs 7 du matelas intérieur 6. De plus, comme on le voit sur la Figure 1, chaque matelas est constitué d'une succession de tronçons mis bout à bout, et les plans de jonction 13A du matelas extérieur sont décalés longitudinalement par rapport à ceux 13B des tronçons du matelas intérieur.As we see on the Figure 2 , the average generator of the bonded zone 10 is angularly offset relative to the contiguous edges 7 of the inner mattress 6. Moreover, as can be seen in FIG. Figure 1 each mattress consists of a succession of sections placed end to end, and the junction planes 13A of the outer mattress are offset longitudinally with respect to those 13B of the sections of the inner mattress.

Dans cet exemple, chacun des deux matelas est constitué par un produit commercialisé sous la marque « MICROTHERM ». Il s'agit d'une structure microporeuse constituée de particules de silice, d'oxydes métalliques et de filaments de verre, cette structure thermiquement isolante étant disposée dans une enveloppe en tissu de verre cousu formant un matelas flexible.In this example, each of the two mattresses consists of a product marketed under the trademark "MICROTHERM". It is a microporous structure consisting of silica particles, metal oxides and glass filaments, this thermally insulating structure being arranged in a stitched glass fabric envelope forming a flexible mattress.

Un tel ensemble à deux matelas superposés permet de résister à 1000°C en régime continu et peut supporter 1200°C pour de brèves expositions à un feu.Such a set of two superimposed mattresses can withstand 1000 ° C in steady state and can withstand 1200 ° C for brief exposures to a fire.

Si nécessaire, le dispositif peut être complété par un second matelas intérieur analogue au matelas 6, interposé entre celui-ci et le matelas extérieur, et muni de moyens de fixation tels que les bandes adhésives 8.If necessary, the device can be completed by a second inner mattress similar to the mattress 6, interposed between the mattress and the outer mattress, and provided with fixing means such as the adhesive strips 8.

Le dispositif de protection au feu est complété par une coquille externe 14 en PEHD (polyéthylène haute densité) ayant d'une part une fonction de protection des matelas isolants contre l'humidité, et d'autre part une fonction esthétique.The fire protection device is completed by an outer shell 14 made of HDPE (high density polyethylene) having on the one hand a protective function of the insulation blankets against moisture, and on the other hand an aesthetic function.

La coquille 14 est elle-même constituée de deux demi-coquilles identiques 14A, 14B comportant le long d'une génératrice d'extrémité un évidement 15 et, le long de l'autre génératrice d'extrémité, une nervure 16 adaptée pour s'encliqueter dans l'évidement 15. Pour assurer l'étanchéité, des bandes 17 formant garnitures d'étanchéité sont interposées entre les faces en regard des deux demi-coquilles. La coquille 14 est constituée d'une succession de tronçons soudés bout à bout par soudure au miroir.The shell 14 itself consists of two identical half-shells 14A, 14B comprising along one end generator a recess 15 and, along the other end generator, a rib 16 adapted to s' snap into the recess 15. To seal, strips 17 forming gaskets are interposed between the facing faces of the two half-shells. The shell 14 consists of a succession of sections welded end to end by welding to the mirror.

La Figure 3 représente une extrémité d'un tube déviateur coudé 18 dans lequel passe la partie médiane du câble, au sommet du pylône 19 associé. Le tube 18 comporte une partie d'extrémité 20 qui fait saillie hors du pylône.The Figure 3 represents an end of an angled deflector tube 18 in which passes the middle portion of the cable, at the top of the associated pylon 19. The tube 18 has an end portion 20 which projects out of the pylon.

De façon classique, l'espace restant libre dans le tube 18 est empli d'un coulis de ciment 21. L'ensemble des deux matelas 6 et 9 pénètre dans un tube de protection 22 fixé au pylône, qui entoure la partie en saillie 20 et se prolonge au-delà de celle-ci. Une protection au feu similaire 23 est disposée autour de la partie 20. La continuité entre cette protection supplémentaire et le matelas extérieur 9 de la partie courante du câble est obtenue au moyen d'un raccord 24 constitué du même matériau MICROTHERM.Conventionally, the space remaining free in the tube 18 is filled with a grout of cement 21. The combination of the two mattresses 6 and 9 penetrates into a protective tube 22 fixed to the pylon, which surrounds the projecting portion 20 and extends beyond it. A similar fire protection 23 is disposed around the portion 20. The continuity between this additional protection and the outer mat 9 of the current portion of the cable is obtained by means of a connector 24 made of the same MICROTHERM material.

De plus, la coquille 14 s'arrête à faible distance de l'entrée du tube de protection 22, et la continuité esthétique est obtenue au moyen d'un tronçon de tube 25 en PEHD fixé dans le prolongement du tube 22, et dans lequel s'emboîte l'extrémité de la coquille 14.In addition, the shell 14 stops at a short distance from the inlet of the protection tube 22, and the aesthetic continuity is obtained by means of a section of HDPE tube 25 fixed in the extension of the tube 22, and in which fits the end of the shell 14.

Ainsi, la protection au feu est assurée jusqu'à l'intérieur du tube déviateur et ne présente pas de point faible à cet emplacement.Thus, the fire protection is provided to the inside of the deviator tube and has no weak point at this location.

De même, les matelas isolants sont prolongés jusqu'au dispositif d'ancrage prévu, à chaque extrémité du câble, dans le tablier du pont.Similarly, the insulation blankets are extended to the anchoring device provided at each end of the cable in the bridge deck.

Comme on le comprend, le dispositif de protection décrit ci-dessus est fiable et simple à mettre en oeuvre, aussi bien lors de la construction du pont que lors d'une éventuelle opération d'entretien ou de réparation, ou encore pour améliorer la protection ou feu prévue initialement lors de la construction du pont.As understood, the protection device described above is reliable and simple to implement, both during the construction of the bridge that during a possible maintenance or repair operation, or to improve the protection or fire initially planned during the construction of the bridge.

En particulier, la double fixation 10-11, 12 du matelas extérieur 9 apporte un degré élevé de sécurité du dispositif de protection au feu.In particular, the double fastening 10-11, 12 of the outer mattress 9 provides a high degree of safety of the fire protection device.

En variante, chaque tronçon de la coquille 14 peut être constitué de plus de deux secteurs, par exemple de trois ou quatre secteurs.As a variant, each section of the shell 14 may consist of more than two sectors, for example three or four sectors.

Claims (14)

  1. A fire protection device (5) for a cable (1) or the like of a civil engineering or structural work, of the type comprising a blanket of thermally insulating material wound around the cable or the like, characterized in that it comprises:
    · at least one inner blanket (6) adapted to be wound around the cable;
    · means (8) for holding the inner blanket around the cable; and
    · an outer blanket (9) adapted to be wound around the inner blanket (6) with an overlap zone (10) between the two longitudinal edges of the outer blanket, the overlap zone being adapted to be fastened by adhesive bonding using a layer (11) of thermally resistant adhesive.
  2. A device according to claim 1, characterized in that it further comprises a series of steel bands (12) constituting outer strappings for the device (5).
  3. A device according to claim 1 or claim 2, characterized in that the inner blanket (6) is adapted to be wound edge-to-edge.
  4. A device according to any one of claims 1 to 3, characterized in that it further comprises a leaktight outer shell (14).
  5. A device according to claim 4, characterized in that the outer shell (14) is constituted by shell sectors (14A, 14B) that are assembled together in a leaktight manner.
  6. A device according to claim 5, characterized in that the shell sectors include along their end generator lines both snap-fastening means (15, 16) and sealing means (17).
  7. A device according to any preceding claim, characterized in that the means for holding the inner blanket comprise adhesive strips (8) of thermally resistant material.
  8. A device according to any one of claims 1 to 7, characterized in that said means for holding the inner blanket (6) comprise steel bands constituting strappings.
  9. A device according to any one of claims 1 to 8, characterized in that each blanket (6, 9) is constituted by successive segments, with the junctions (13A) between the segments of the outer blanket (9) being longitudinally offset relative to the junctions (13B) between the segments of the inner blanket (6).
  10. A device according to any one of claims 1 to 9, characterized in that the mean generator line of the overlap zone (10) of the outer blanket (9) is angularly offset with respect to the closure region (7) of the inner blanket (6).
  11. A device according to any preceding claim, characterized in that each blanket (6, 9) comprises a microporous structure based on particles of silica, metal oxides, and glass filaments, the structure being placed in a covering of stitched glass fabric.
  12. A civil engineering or structural work, of the type comprising a cable structure, characterized in that at least one cable or the like of the cable structure is provided with a fire protection device (5) according to any one of claims 1 to 11.
  13. A bridge of the type comprising a deck, pylons (19), and a set of cables (1) or the like for suspending the deck from the pylons, characterized in that at least one cable (1) or the like is provided with a fire protection device (5) according to any one of claims 1 to 11.
  14. A bridge according to claim 13, characterized in that the pylon (19) associated with said cable (1) includes in its top portion a cable-deflector tube (18), and in that the protection device (5) extends onto the deflector tube.
EP07730973A 2006-02-17 2007-02-14 Device for protecting a cable or the like of a construction or civil engineering project from fire Active EP1984569B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07730973T PL1984569T3 (en) 2006-02-17 2007-02-14 Device for protecting a cable or the like of a construction or civil engineering project from fire

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0601428A FR2897623B1 (en) 2006-02-17 2006-02-17 DEVICE FOR PROTECTING THE FIRE OF A CABLE OR THE LIKE OF ART OR CIVIL ENGINEERING
PCT/FR2007/000261 WO2007093703A2 (en) 2006-02-17 2007-02-14 Device for protecting a cable or the like of a construction or civil engineering project from fire

Publications (2)

Publication Number Publication Date
EP1984569A2 EP1984569A2 (en) 2008-10-29
EP1984569B1 true EP1984569B1 (en) 2012-04-11

Family

ID=37076397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07730973A Active EP1984569B1 (en) 2006-02-17 2007-02-14 Device for protecting a cable or the like of a construction or civil engineering project from fire

Country Status (14)

Country Link
US (1) US7943217B2 (en)
EP (1) EP1984569B1 (en)
JP (1) JP2009526933A (en)
CN (1) CN101384774B (en)
AT (1) ATE553268T1 (en)
AU (1) AU2007216373B2 (en)
CA (1) CA2652208A1 (en)
DK (1) DK1984569T3 (en)
ES (1) ES2386205T3 (en)
FR (1) FR2897623B1 (en)
PL (1) PL1984569T3 (en)
PT (1) PT1984569E (en)
WO (1) WO2007093703A2 (en)
ZA (1) ZA200806705B (en)

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WO2012052796A1 (en) 2010-10-19 2012-04-26 Soletanche Freyssinet Structural cable with fire protection
DE102011106431B3 (en) * 2011-07-04 2012-10-25 Dywidag-Systems International Gmbh Arrangement for supporting a tension member, in particular a stay cable, transversely to its longitudinal direction
US8640292B1 (en) * 2012-05-21 2014-02-04 Felix L. Sorkin Deviator system for use in post-tension segmental concrete construction
CN103352424A (en) * 2013-04-19 2013-10-16 奥盛（九江）钢线钢缆有限公司 Method for manufacturing double-layer unbonded steel strand
CN104846743B (en) * 2015-04-30 2016-08-24 合肥工业大学 A kind of fireproof for bridge cable protection
US10751968B2 (en) 2015-06-30 2020-08-25 Vsl International Ag Cylindrical thermal protection sheath
RU2017140418A (en) 2015-06-30 2019-07-30 Всл Интернациональ Аг CYLINDRICAL HEAT PROTECTIVE SHELL AND CAP
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CN105217441B (en) * 2015-10-08 2018-02-02 上海建工集团股份有限公司 A kind of cable wire firebreak device and its installation method
CN105944258B (en) * 2016-06-29 2021-09-03 中交第二航务工程局有限公司 Stay cable tower end fire extinguishing system
PL3336255T3 (en) * 2016-12-19 2020-05-18 Soletanche Freyssinet Fire protection device of a structural cable
CN107419662A (en) * 2017-08-23 2017-12-01 柳州欧维姆机械股份有限公司 A kind of Ha Fushi Novel fireproofs drag-line and preparation method thereof
CN109653968B (en) * 2017-10-11 2023-08-01 中车兰州机车有限公司玉门风电分公司 Wind-powered electricity generation tower section of thick bamboo platform cable hole fire prevention support
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CN109944157A (en) * 2019-03-18 2019-06-28 江阴法尔胜住电新材料有限公司 The device and installation method of a kind of pair of suspension cable setting flameproof protection
CN113235429B (en) * 2021-05-28 2023-01-06 广州珠江黄埔大桥建设有限公司 Sheath, sheath installation method and bridge cable
CN113605234B (en) * 2021-08-31 2022-12-06 江苏中矿大正表面工程技术有限公司 Fireproof outer layer isolation system for bridge stay cable
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Also Published As

Publication number Publication date
AU2007216373A1 (en) 2007-08-23
AU2007216373B2 (en) 2012-01-12
US20100154147A1 (en) 2010-06-24
PT1984569E (en) 2012-07-18
DK1984569T3 (en) 2012-07-23
CA2652208A1 (en) 2007-08-23
EP1984569A2 (en) 2008-10-29
WO2007093703A3 (en) 2007-10-04
US7943217B2 (en) 2011-05-17
CN101384774B (en) 2011-09-14
ES2386205T3 (en) 2012-08-13
ZA200806705B (en) 2009-03-25
ATE553268T1 (en) 2012-04-15
JP2009526933A (en) 2009-07-23
PL1984569T3 (en) 2012-09-28
FR2897623B1 (en) 2008-04-11
WO2007093703A2 (en) 2007-08-23
FR2897623A1 (en) 2007-08-24
CN101384774A (en) 2009-03-11

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