EP2690230B1 - Device for tensioning a covering membrane - Google Patents

Device for tensioning a covering membrane Download PDF

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Publication number
EP2690230B1
EP2690230B1 EP13178029.8A EP13178029A EP2690230B1 EP 2690230 B1 EP2690230 B1 EP 2690230B1 EP 13178029 A EP13178029 A EP 13178029A EP 2690230 B1 EP2690230 B1 EP 2690230B1
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EP
European Patent Office
Prior art keywords
connecting device
fixing body
structural element
assembly
membrane
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EP13178029.8A
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German (de)
French (fr)
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EP2690230A3 (en
EP2690230A2 (en
Inventor
Nicolas Robin
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SMC2
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SMC2
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Publication of EP2690230A3 publication Critical patent/EP2690230A3/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/08—Vaulted roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00—Tents or canopies, in general
    • E04H15/32—Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
    • E04H15/322—Stretching devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00—Tents or canopies, in general
    • E04H15/32—Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
    • E04H15/58—Closures; Awnings; Sunshades

Definitions

  • the present invention relates to a device for tensioning a flexible building roofing membrane.
  • This technology has many advantages. In particular, it allows rapid installation and has much lower production costs than traditional techniques.
  • One of the technological principles of a building with a membrane roof consists in making a framework with arches which will tension the flexible membrane as described for example in the document FR-A-2 835 273 and the document DE3033838 A1 .
  • the conversion membrane is placed on a structure and is tensioned in an initial tension range determined in particular according to the mechanical characteristics of the membrane.
  • the roofing membrane may tend to experience voltage losses over time under the action of the wind, the weight of snow and other bad weather; these phenomena cause creep, relaxation, dimensional variation, etc. in the membrane itself.
  • the relaxation of the cover membrane that occurs during the first months of the cover's life and the subsequent loss of initial tension is irreversible and requires human intervention to re-tension the membrane.
  • the invention aims to provide a device making it possible to maintain in a flexible covering membrane within the voltage range which was initially conferred on it.
  • the invention incorporates a reserve of prestress which is used to compensate for the relaxation of the covering membrane.
  • the device according to the invention thus makes it possible to keep the tension of the fabric within the range which was initially given to it.
  • the connecting device comprises a fixed sub-assembly intended to be fixed to the structure of the building, a sub-assembly mobile with respect to the fixed sub-assembly, intended to be connected to the structural element, making it possible to place the mobile sub-assembly with respect to the fixed sub-assembly in a position in which the structural element carries out an initial tensioning of the cover membrane and an elastic element interposed between the fixed sub-element and the mobile sub-element forming a prestressing reserve compensating for the creep of the cover membrane.
  • the framing member comprises an arch, each end of which is connected to a shoe, each of the shoes being connected to a fixing body connected to the building structure.
  • the threaded rod is interposed between the sabot and the fixing body to translate the sabot relative to the fixing body and in that the elastic element is interposed between the sabot and the fixing body.
  • the elastic element comprises a stack of elastic Belleville washers which are engaged on the threaded rod.
  • the structural element comprises a flexible arch, each end of which is engaged in a sheath, each sheath being connected to a fixing body connected to the building structure.
  • the sheath may comprise at least one bearing and the fixing body may comprise at least one clevis, the device further comprising a shaft provided with a bore engaged in the bearing and a rod connected to the clevis, the rod being engaged in the bore, Belleville spring washers being engaged on the rod between the axle and a nut.
  • the device is interposed between the beam and the structural member.
  • the structural element comprises a cap forming a point support on the roofing membrane.
  • the framework element comprises an arc forming a curvilinear support giving the roofing membrane a double curvature.
  • the figure 1 shows in perspective a building 100 provided with a flexible covering membrane 110.
  • This building 100 has a structure which can be, for example, made of wood.
  • the structure of this building may comprise vertical uprights 120 which support horizontal beams 130.
  • the cover membrane 110 is fixed longitudinally and transversely on the beams 130.
  • profiles 150 are provided which can be seen on a larger scale at picture 3 .
  • the covering membrane 110 is tensioned by arches 140.
  • the building may also include joists 160 which extend between two beams 130.
  • FIG 2 and 3 illustrate a first embodiment of a tensioning device 1 according to the invention which schematically comprises a fixed sub-assembly linked to a beam 130 and a mobile sub-assembly with respect to the fixed sub-assembly.
  • the tensioning device 1 comprises a body 2 for receiving an arc foot 3 cooperating with thrust means.
  • the receiving body 2 is fixed to the beam 130, for example, by rods 4.
  • the receiving body 2 has two cheeks 6 in each of which a slot 7 is made. The presence of a notch 8 in each of the cheeks 6 is also noted. The notches 8 are used to receive a U-shaped support plate 9 whose function will appear later.
  • the foot of the bow 3 has a shoe 5 whose dimensions are suitable for engagement in the fixing body 2.
  • the shoe 5 has an internal wall 12, for example mechanically welded.
  • connection between the shoe 5 and the fixing body 2 is made by a pin 13 which passes through the two holes made in the shoe 5 and through the slots 7 of the fixing body 2.
  • a nut and a washer allow the maintenance of axis 13.
  • the support plate 9 comprises a bore, devoid of thread, in which is engaged a threaded rod 14 at its end.
  • the rod 14 bears against the shoe 5.
  • a nut 15 and an elastic element composed of a stack of Belleville washers 16 are engaged on the rod 14 in a configuration where the stack of washers 16 is interposed between the support plate 9 and the nut 15 so as to be able to be compressed.
  • the thrust means consisting of the rod 14, the stack of Belleville washers 16 and the nut 15 are thus inserted between the support plate 9 of the receiving body 2 and the foot of the arc 3 so as to be able to exert a thrust on foot 3 of the arc.
  • Belleville washers 15 have a reserve of tension which is put to good use during the inevitable relaxation of the covering membrane. It may be recalled that the cover membrane 110 is typically placed on arcs up to 6 m long.
  • the arc which will ensure the tensioning of the cover membrane 110 is an arc 140' - preferably flexible - which is engaged at each of its ends in a sheath 22.
  • a fixing body 2' for example mechanically welded - is placed against a beam 130.
  • the fixing body has two flanges 6'.
  • the fixing body is, moreover, equipped with a clevis 21.
  • the foot of the arc therefore consists of a sheath 22 which is provided with a fork 23.
  • the fork 23 itself comprises two coaxial bearings 24.
  • connection between the foot of the arc 140 and the beam 130 is made thanks to (i) an axis 26 which is equipped with a hole 27 emerging and (ii) thanks to a rod 14 'which is equipped with an eyelet 29 at one of its ends and has a thread 30 at its second end.
  • connection is made by engaging the pin 26 in the bearings 24 and positioning the bore 27 between the two bearings 24.
  • Rod 14' is connected to yoke 21; for this a bolt 32 is engaged in the yoke 21 and the eyelet 29.
  • the threaded end 30 of the rod 14' is inserted into the bore 27 of the shaft 26.
  • the shaft 26 is laterally guided by the flanges 6'.
  • Belleville washers 16' are engaged on the end 30 of the rod 14' and are retained by a nut 34 which is preferably self-locking.
  • the Belleville washers thus form a reserve of elastic stress which makes it possible to compensate for creep of the cover membrane.
  • the arch supporting the cover membrane 110 comprises at least two feet arc 3 each provided with a tensioning device 1 according to the invention so as to apply a balanced tension in the covering membrane and so that the reserve of stress which is present in each connecting device is released in a balanced way.
  • the device 1 according to the invention allows the tensioning of a membrane after creep according to a simple, reliable, inexpensive process, which does not require maintenance intervention.
  • the figure 7 schematically shows the behavior of a cover membrane equipped with a connection device such as that shown in figure 2 and 3 while the figure 8 shows the behavior of a roofing membrane equipped with a connection device such as that shown in figures 4 to 6 .
  • the figures 9 and 10 show a variant of the invention in which the building structure has a beam 180 and a structural element 170 or 170' ensuring the shaping of a flexible covering membrane 140 retained at its periphery on said building structure; the connecting device which is interposed between the beam and the structural element.
  • the structural member in the alternative embodiment of the figure 9 is an arc forming a curvilinear support giving the roofing membrane a double curvature.
  • the structural element 170 provides point support.
  • an elastic element is interposed between the structure of the building and the structural element to form a reserve of stress which is released gradually and compensates for the creep of the membrane during its first months of installation.

Description

La présente invention concerne un dispositif de mise en tension de membrane de couverture souple de bâtiment.The present invention relates to a device for tensioning a flexible building roofing membrane.

Dans le domaine de la construction, il est connu de realiser la couverture d'une struture avec une membrane souple qui est mise en tension.In the field of construction, it is known to cover a structure with a flexible membrane which is tensioned.

Cette technologie présente de nombreux avantages. Elle permet notamment une mise en place rapide et présente des couts de réalisation très inférieurs à ceux des techniques traditionnelles.This technology has many advantages. In particular, it allows rapid installation and has much lower production costs than traditional techniques.

Un des principes technologiques d'un batiment à couverture à membrane consiste à réaliser une charpente avec des arcs qui vont mettre en tension la membrane souple comme le décrit par exemple le document FR-A-2 835 273 et le document DE3033838 A1 .One of the technological principles of a building with a membrane roof consists in making a framework with arches which will tension the flexible membrane as described for example in the document FR-A-2 835 273 and the document DE3033838 A1 .

Il subsiste cependant un point sur lequel la technologie de la couverture par membrane souple demeure insatisfaisante.However, there remains one point on which the technology of flexible membrane coverage remains unsatisfactory.

En effet, la membrane de converture est posée sur une structure et est mise en tension dans une plage de tension initiale déterminée notamment en fonction des caractéristiques mécaniques de la membrane. Or, on constate que la membrane de couverture peut avoir tendance à connaitre des pertes de tension au cours du temps sous l'action du vent, du poids de la neige et autres intempéries ; ces phénomènes causent fluage, relaxation, variation dimensionnelles etc dans la membrane même. La détente de la membrane de couverture qui se produit au cours des premiers mois de vie de la couverture et la perte de la tension initiale qui s'ensuit est irréversible et nécessite une intervention humaine pour une remise en tension de la membrane.Indeed, the conversion membrane is placed on a structure and is tensioned in an initial tension range determined in particular according to the mechanical characteristics of the membrane. However, it is found that the roofing membrane may tend to experience voltage losses over time under the action of the wind, the weight of snow and other bad weather; these phenomena cause creep, relaxation, dimensional variation, etc. in the membrane itself. The relaxation of the cover membrane that occurs during the first months of the cover's life and the subsequent loss of initial tension is irreversible and requires human intervention to re-tension the membrane.

Or, cette intervention sur site peut s'avérer complexe à réaliser en particulier sur des batiments de grande hauteur puisqu'il faut prévoir des équipements de type nacelle pour amener un opérateur au niveau des arcs de support.However, this on-site intervention can prove to be complex to carry out, in particular on very high buildings since it is necessary to provide equipment of the nacelle type to bring an operator to the level of the support arches.

Dans ce contexte technique, l'invention vise à fournir un dispositif permettant de maintenir dans une membrane souple de couverture dans la plage de tension qui lui a été initialement conférée.In this technical context, the invention aims to provide a device making it possible to maintain in a flexible covering membrane within the voltage range which was initially conferred on it.

La présente invention concerne un dispositif de liaison entre une structure de bâtiment et un élément de charpente assurant la mise en forme d'une membrane de couverture souple retenue à sa périphérie sur ladite structure de bâtiment. De plus, le dispositif de liaison comprend :

  • des moyens de déplacement exerçant une translation de l'élément de charpente contre la membrane de couverture pour réaliser une mise en tension dans une plage de tension initiale de la membrane de couverture (140) et pour réaliser la mise en forme de celle-ci, et
  • des moyens de réserve de précontrainte élastique permettant de compenser un fluage de la membrane de couverture par un déplacement du dispositif de liaison maintenant la membrane de couverture, dans la plage de tension initiale.
The present invention relates to a connection device between a building structure and a structural element ensuring the shaping of a flexible roofing membrane retained at its periphery on said building structure. In addition, the linking device comprises:
  • displacement means exerting a translation of the structural element against the roofing membrane to produce a tensioning in an initial tension range of the cover membrane (140) and to effect the shaping of the latter, and
  • elastic prestress reserve means making it possible to compensate for creep of the covering membrane by a displacement of the connecting device maintaining the covering membrane, in the initial tension range.

Ainsi, l'invention incorpore une réserve de précontrainte qui est mise à profit pour compenser la détente de la membrane de couverture. Le dispositif selon l'invention permet ainsi de conserver la tension de la toile dans la plage qui lui a été initialement conférée.Thus, the invention incorporates a reserve of prestress which is used to compensate for the relaxation of the covering membrane. The device according to the invention thus makes it possible to keep the tension of the fabric within the range which was initially given to it.

Selon l'invention, le dispositif de liaison comprend un sous ensemble fixe destiné à être fixé à la structure du bâtiment, un sous ensemble mobile par rapport au sous ensemble fixe, destiné à être relié à l'élément de charpente, permettant de placer le sous ensemble mobile par rapport au sous ensemble fixe dans une position dans laquelle l'élément de charpente réalise une mise en tension initiale de la membrane de couverture et un élément élastique interposé entre le sous élément fixe et le sous élément mobile formant une réserve de précontrainte compensant le fluage de la membrane de couverture.According to the invention, the connecting device comprises a fixed sub-assembly intended to be fixed to the structure of the building, a sub-assembly mobile with respect to the fixed sub-assembly, intended to be connected to the structural element, making it possible to place the mobile sub-assembly with respect to the fixed sub-assembly in a position in which the structural element carries out an initial tensioning of the cover membrane and an elastic element interposed between the fixed sub-element and the mobile sub-element forming a prestressing reserve compensating for the creep of the cover membrane.

Dans une forme de réalisation, l'élément de charpente comprend un arc dont chaque extrémité est reliée à un sabot, chacun des sabots étant connecté à un corps de fixation relié à la structure de bâtiment.In one embodiment, the framing member comprises an arch, each end of which is connected to a shoe, each of the shoes being connected to a fixing body connected to the building structure.

Selon une disposition de l'invention, la tige filetée est interposée entre le sabot et le corps de fixation pour translater le sabot par rapport au corps de fixation et en ce que l'élément élastique est interposée entre le sabot et le corps de fixation.According to one arrangement of the invention, the threaded rod is interposed between the sabot and the fixing body to translate the sabot relative to the fixing body and in that the elastic element is interposed between the sabot and the fixing body.

En pratique, l'élément élastique comprend un empilement de rondelles élastiques Belleville qui sont engagées sur la tige filetée.In practice, the elastic element comprises a stack of elastic Belleville washers which are engaged on the threaded rod.

Dans une autre forme de réalisation, l'élément de charpente comprend un arc souple dont chaque extrémité est engagée dans un fourreau, chaque fourreau étant connecté à un corps de fixation relié à la structure de bâtiment.In another embodiment, the structural element comprises a flexible arch, each end of which is engaged in a sheath, each sheath being connected to a fixing body connected to the building structure.

Il peut être prévu que la tige filetée soit interposée entre le fourreau et le corps de fixation pour translater le fourreau par rapport au corps de fixation et en ce que l'élément élastique est interposée entre le fourreau et le corps de fixation.Provision may be made for the threaded rod to be interposed between the sheath and the fixing body in order to translate the sheath relative to the fixing body and in that the elastic element is interposed between the sheath and the fixing body.

En pratique, le fourreau peut comprendre, au moins, un palier et le corps de fixation peut comprendre au moins une chape, le dispositif comprenant de plus un axe pourvu d'un perçage engagé dans le palier et une tige reliée à la chape, la tige étant engagée dans le perçage, des rondelles élastiques Belleville étant engagées sur la tige entre l'axe et un écrou.In practice, the sheath may comprise at least one bearing and the fixing body may comprise at least one clevis, the device further comprising a shaft provided with a bore engaged in the bearing and a rod connected to the clevis, the rod being engaged in the bore, Belleville spring washers being engaged on the rod between the axle and a nut.

Selon un autre aspect de l'invention concernant une structure de bâtiment présentant une poutre et un élément de charpente assurant la mise en forme d'une membrane de couverture souple retenue à sa périphérie sur ladite structure de bâtiment, le dispositif est interposée entre la poutre et l'élément de charpente.According to another aspect of the invention relating to a building structure having a beam and a structural element ensuring the shaping of a flexible covering membrane retained at its periphery on said building structure, the device is interposed between the beam and the structural member.

Selon une possibilité, l'élément de charpente comprend une calotte formant un appui ponctuel sur la membrane de couverture.According to one possibility, the structural element comprises a cap forming a point support on the roofing membrane.

Selon une autre possibilité, l'élément de charpente comprend un arc formant un appui curviligne conférant à la membrane de couverture une double courbure.According to another possibility, the framework element comprises an arc forming a curvilinear support giving the roofing membrane a double curvature.

D'autres aspects, buts et avantages de la présente invention apparaîtront mieux à la lecture de la description suivante de plusieurs modes de réalisation de celle-ci, donnés à titre d'exemple non limitatifs et faits en référence aux dessins annexés.

  • La figure 1 est une vue générale d'un batiment équipé d'une couverture en membrane souple ;
  • La figure 2 est une vue en perspective illustrant le dispositif par le dessous selon un mode de réalisation de l'invention.
  • La figure 3 est une vue en coupe du dispositif montré à la figure 2.
  • Les figures 4 et 5 représentent en perspective un autre mode de réalisation de l'invention
  • La figure 6 est une vue éclatée du dispositif montré aux figures 4 et 5.
  • Les figures 7 et 8 montrent schématiquement le dispositif respectivement des figures 3, 4 et des figures 4, 5, 6.
  • Les figures 9 et 10 montrent schématiquement deux autres implantations possibles du dispositif selon l'invention.
Other aspects, objects and advantages of the present invention will appear better on reading the following description of several embodiments thereof, given by way of non-limiting example and made with reference to the appended drawings.
  • The figure 1 is a general view of a building equipped with a flexible membrane roof;
  • The figure 2 is a perspective view illustrating the device from below according to one embodiment of the invention.
  • The picture 3 is a sectional view of the device shown in figure 2 .
  • The figure 4 and 5 show in perspective another embodiment of the invention
  • The figure 6 is an exploded view of the device shown in figure 4 and 5 .
  • The figures 7 and 8 schematically show the device respectively figures 3, 4 and figure 4 , 5 , 6 .
  • The figures 9 and 10 schematically show two other possible layouts of the device according to the invention.

Dans la suite de la description, par souci de simplification, des éléments identiques, similaires ou équivalents aux différents modes de réalisation portent les mêmes références numériques.In the remainder of the description, for the sake of simplification, elements which are identical, similar or equivalent to the various embodiments bear the same reference numerals.

La figure 1 montre en perspective un bâtiment 100 doté d'une membrane de couverture 110 souple.The figure 1 shows in perspective a building 100 provided with a flexible covering membrane 110.

Ce bâtiment 100 possède une structure qui peut être, par exemple, réalisée en bois. Comme cela apparait sur la figure 1, la structure de ce bâtiment peut comprendre des montants 120 verticaux et qui supportent des poutres 130 horizontales. Dans l'exemple de construction montré à la figure 1, la membrane de couverture 110 est fixée longitudinalement et transversalement sur les poutres 130. Pour cela il est prévu des profilés 150 que l'on peut voir à une plus grande échelle à la figure 3. La mise en tension de la membrane de couverture 110 est réalisée par des arcs 140. Le bâtiment peut de plus comprendre des solives 160 qui s'étendent entre deux poutres 130.This building 100 has a structure which can be, for example, made of wood. As it appears on the figure 1 , the structure of this building may comprise vertical uprights 120 which support horizontal beams 130. In the construction example shown in figure 1 , the cover membrane 110 is fixed longitudinally and transversely on the beams 130. For this, profiles 150 are provided which can be seen on a larger scale at picture 3 . The covering membrane 110 is tensioned by arches 140. The building may also include joists 160 which extend between two beams 130.

Les figures 2 et 3 illustrent une première forme de réalisation d'un dispositif 1 de mise en tension selon l'invention qui comprend schématiquement un sous ensemble fixe lié à une poutre 130 et un sous ensemble mobile par rapport au sous ensemble fixe.The figure 2 and 3 illustrate a first embodiment of a tensioning device 1 according to the invention which schematically comprises a fixed sub-assembly linked to a beam 130 and a mobile sub-assembly with respect to the fixed sub-assembly.

Ainsi, le dispositif 1 de mise en tension comprend un corps de réception 2 d'un pied 3 d'arc coopérant avec des moyens de poussée. Le corps de réception 2 est fixé à la poutre 130, par exemple, par des tiges 4.Thus, the tensioning device 1 comprises a body 2 for receiving an arc foot 3 cooperating with thrust means. The receiving body 2 is fixed to the beam 130, for example, by rods 4.

Le corps de réception 2 présente deux joues 6 dans chacune desquelles est réalisée une lumière 7. On note également la présence d'une entaille 8 dans chacune des joues 6. Les entailles 8 servent à recevoir une plaque d'appui 9 en U dont la fonction apparaitra plus loin.The receiving body 2 has two cheeks 6 in each of which a slot 7 is made. The presence of a notch 8 in each of the cheeks 6 is also noted. The notches 8 are used to receive a U-shaped support plate 9 whose function will appear later.

Le pied de l'arc 3 présente un sabot 5 dont les dimensions sont adaptées pour un engagement dans le corps de fixation 2.The foot of the bow 3 has a shoe 5 whose dimensions are suitable for engagement in the fixing body 2.

Le sabot 5 possède une paroi interne 12 par exemple mécano-soudée.The shoe 5 has an internal wall 12, for example mechanically welded.

La liaison entre le sabot 5 et le corps de fixation 2 se fait par un axe 13 qui passe à travers des deux perçages réalisés dans le sabot 5 et à travers les lumières 7 du corps de fixation 2. Un écrou et une rondelle permettent le maintien de l'axe 13.The connection between the shoe 5 and the fixing body 2 is made by a pin 13 which passes through the two holes made in the shoe 5 and through the slots 7 of the fixing body 2. A nut and a washer allow the maintenance of axis 13.

Comme on le voir à la figure 3, la plaque d'appui 9 comprend un perçage, dépourvu de pas de vis, dans lequel est engagée une tige 14 filetée à son extrémité. La tige 14 vient en appui contre le sabot 5. Un écrou 15 et un élément élastique composé d'un empilement de rondelles Belleville 16 sont engagés sur la tige 14 dans une configuration où l'empilement de rondelles 16 est intercalé entre la plaque d'appui 9 et l'écrou 15 de sorte à pouvoir être comprimé. Les moyens de poussée constitués de la tige 14, de l'empilement de rondelles Belleville 16 et l'écrou 15 sont ainsi intercalés entre la plaque d'appui 9 du corps de réception 2 et le pied de l'arc 3 de sorte à pouvoir exercer une poussée sur le pied 3 de l'arc. Les rondelles Belleville 15 présentent une réserve de tension qui est mise à profit lors de l'inévitable détente de la membrane de couverture. On peut rappeler que la membrane de couverture 110 est typiquement disposée sur des arcs allant jusqu'à 6 m de long.As we see at the picture 3 , the support plate 9 comprises a bore, devoid of thread, in which is engaged a threaded rod 14 at its end. The rod 14 bears against the shoe 5. A nut 15 and an elastic element composed of a stack of Belleville washers 16 are engaged on the rod 14 in a configuration where the stack of washers 16 is interposed between the support plate 9 and the nut 15 so as to be able to be compressed. The thrust means consisting of the rod 14, the stack of Belleville washers 16 and the nut 15 are thus inserted between the support plate 9 of the receiving body 2 and the foot of the arc 3 so as to be able to exert a thrust on foot 3 of the arc. Belleville washers 15 have a reserve of tension which is put to good use during the inevitable relaxation of the covering membrane. It may be recalled that the cover membrane 110 is typically placed on arcs up to 6 m long.

Dans l'exemple de réalisation montré aux figures 4 à 6, l'arc qui va assurer la mise en tension de la membrane de couverture 110 est un arc 140' - de préférence souple - qui est engagé à chacune de ses extrémités dans un fourreau 22.In the example embodiment shown in figures 4 to 6 , the arc which will ensure the tensioning of the cover membrane 110 is an arc 140' - preferably flexible - which is engaged at each of its ends in a sheath 22.

Dans cette forme de réalisation de l'invention, un corps de fixation 2' - par exemple mécano soudé - est placé en applique contre une poutre 130. Le corps de fixation possède deux joues 6'. Le corps de fixation est, de plus, doté d'une chape 21.In this embodiment of the invention, a fixing body 2' - for example mechanically welded - is placed against a beam 130. The fixing body has two flanges 6'. The fixing body is, moreover, equipped with a clevis 21.

Dans cette forme de réalisation de l'invention, le pied de l'arc est donc constitué d'un fourreau 22 qui est doté d'une fourchette 23. La fourchette 23 comprend elle-même deux paliers 24 coaxiaux.In this embodiment of the invention, the foot of the arc therefore consists of a sheath 22 which is provided with a fork 23. The fork 23 itself comprises two coaxial bearings 24.

La liaison entre le pied de l'arc 140 et la poutre 130 se fait grâce à (i) un axe 26 qui est doté d'un perçage 27 débouchant et (ii) grâce à une tige 14' qui est dotée d'un œillet 29 à l'une de ses extrémités et est dotée d'un filetage 30 à sa seconde extrémité.The connection between the foot of the arc 140 and the beam 130 is made thanks to (i) an axis 26 which is equipped with a hole 27 emerging and (ii) thanks to a rod 14 'which is equipped with an eyelet 29 at one of its ends and has a thread 30 at its second end.

La liaison se fait en engageant l'axe 26 dans les paliers 24 et positionnant le perçage 27 entre les deux paliers 24.The connection is made by engaging the pin 26 in the bearings 24 and positioning the bore 27 between the two bearings 24.

La tige 14' est reliée à la chape 21 ; pour cela un boulon 32 est engagé dans la chape 21 et l'œillet 29.Rod 14' is connected to yoke 21; for this a bolt 32 is engaged in the yoke 21 and the eyelet 29.

L'extrémité filetée 30 de la tige 14' est insérée dans le perçage 27 de l'axe 26. L'axe 26 est guidé latéralement par les joues 6'.The threaded end 30 of the rod 14' is inserted into the bore 27 of the shaft 26. The shaft 26 is laterally guided by the flanges 6'.

Des rondelles Belleville 16' sont engagées sur l'extrémité 30 de la tige 14' et sont retenues par un écrou 34 de préférence auto freiné.Belleville washers 16' are engaged on the end 30 of the rod 14' and are retained by a nut 34 which is preferably self-locking.

Les rondelles Belleville forment ainsi une réserve de contrainte élastique qui permet de compenser un fluage de la membrane de couverture.The Belleville washers thus form a reserve of elastic stress which makes it possible to compensate for creep of the cover membrane.

Bien que non illustré sur les figures, il est entendu que l'arc supportant la membrane de couverture 110 comprend au moins deux pieds d'arc 3 dotés chacun d'un dispositif 1 de mise en tension selon l'invention de sorte à appliquer une tension équilibrée dans la membrane de couverture et de sorte à ce que la réserve de contrainte de qui est présente dans chaque dispositif de liaison se libère de façon équilibrée.Although not shown in the figures, it is understood that the arch supporting the cover membrane 110 comprises at least two feet arc 3 each provided with a tensioning device 1 according to the invention so as to apply a balanced tension in the covering membrane and so that the reserve of stress which is present in each connecting device is released in a balanced way.

Ainsi, le dispositif 1 selon l'invention permet la remise en tension d'une membrane après fluage selon un procédé simple, fiable, peu coûteux, qui ne nécessite pas d'intervention de maintenance.Thus, the device 1 according to the invention allows the tensioning of a membrane after creep according to a simple, reliable, inexpensive process, which does not require maintenance intervention.

La figure 7 montre schématiquement le comportement d'une membrane de couverture équipé d'un dispositif de liaison tel que celui montré aux figures 2 et 3 tandis que la figure 8 montre le comportement d'une membrane de couverture équipé d'un dispositif de liaison tel que celui montré aux figures 4 à 6.The figure 7 schematically shows the behavior of a cover membrane equipped with a connection device such as that shown in figure 2 and 3 while the figure 8 shows the behavior of a roofing membrane equipped with a connection device such as that shown in figures 4 to 6 .

Les figures 9 et 10 montrent une variante de l'invention dans laquelle la structure de bâtiment présente une poutre 180 et un élément de charpente 170 ou 170' assurant la mise en forme d'une membrane de couverture 140 souple retenue à sa périphérie sur ladite structure de bâtiment ; le dispositif de liaison qui est interposée entre la poutre et l'élément de charpente. L'élément de charpente dans la variante de réalisation de la figure 9 est un arc formant un appui curviligne conférant à la membrane de couverture une double courbure. Dans l'exemple de réalisation illustré à la figure 10, l'élément de charpente 170 assure un appui ponctuel. Dans ces deux formes de réalisation, un élément élastique est interposé entre la structure du bâtiment et l'élément de charpente pour former une réserve de contrainte qui se libère progressivement et compense le fluage de la membrane au cours de ses premiers mois de pose.The figures 9 and 10 show a variant of the invention in which the building structure has a beam 180 and a structural element 170 or 170' ensuring the shaping of a flexible covering membrane 140 retained at its periphery on said building structure; the connecting device which is interposed between the beam and the structural element. The structural member in the alternative embodiment of the figure 9 is an arc forming a curvilinear support giving the roofing membrane a double curvature. In the exemplary embodiment illustrated in figure 10 , the structural element 170 provides point support. In these two embodiments, an elastic element is interposed between the structure of the building and the structural element to form a reserve of stress which is released gradually and compensates for the creep of the membrane during its first months of installation.

Il va de soi que l'invention n'est pas limitée aux modes de réalisation décrits ci-dessus à titre d'exemples mais qu'elle est définie par les revendications.It goes without saying that the invention is not limited to the embodiments described above by way of examples but that it is defined by the claims.

Claims (10)

  1. A connecting device (1) between a building structure (130) and a structural element (150, 170, 170') ensuring the shaping of a flexible covering membrane (140) retained at its periphery on said building structure (130), the connecting device (1) comprising:
    - displacement means exerting a translation of the structural element against the cover membrane (140) to achieve tensioning in an initial tension range of the cover membrane (140) and to achieve the shaping thereof, and
    elastic prestressing reserve means making it possible to compensate for creep of the cover membrane by a displacement of the connecting device holding the cover membrane, in the initial tension range, the connecting device comprises a fixed sub-assembly intended to be fixed to the structure of the building, an sub-assembly movable relative to the fixed sub-assembly, intended to be connected to the structural element, making it possible to place the sub-assembly movable relative to the fixed sub-assembly in a position in which the structural element performs an initial tensioning of the cover membrane (110) and an elastic element interposed between the fixed sub-element and the movable sub-element forming a prestressing reserve compensating for the creep of the cover membrane.
  2. The connecting device according to claim 1, characterized in that the structural element comprises an arc (140) each end of which is connected to a shoe (5), which is part of the movable sub-assembly, each of the shoes (5) being connected to a fixing body (2), which is part of the fixed sub-assembly, connected to the building structure.
  3. The connecting device according to claim 2, characterized in that a threaded rod (14) is interposed between the shoe (5) and the fixing body (2) to translate the shoe (5) relative to the fixing body (2) and in that the elastic element is interposed between the shoe (5) and the fixing body (2).
  4. The connecting device according to claim 3, characterized in that the elastic element comprises a stack of elastic Belleville washers (16) which are engaged on the threaded rod (14).
  5. The connecting device according to claim 1, characterized in that the structural element comprises a flexible arc (140') each end of which is engaged in a sleeve (22), which is part of the movable sub-assembly, each sleeve (22) being connected to a fixing body (2'), which is part of the fixed sub-assembly, connected to the building structure.
  6. The connecting device according to claim 5, characterized in that the threaded rod (14') is interposed between the sleeve (22) and the fixing body (2') to translate the sleeve (22) relative to the fixing body (2') and in that the elastic element is interposed between the sleeve (22) and the fixing body (2').
  7. The connecting device according to claim 6, characterized in that the sleeve (22) comprises at least one bearing (24) and in that the fixing body (2') comprises at least one yoke (21), the device further comprising an axis (26) provided with a bore (27) engaged in the bearing (24) and a rod (14') connected to the yoke (21), the rod (14') being engaged in the bore (27), elastic Belleville washers being engaged on the rod (14') between the axis (26) and a nut (34).
  8. The connecting device according to claim 1 between a building structure having a beam and a structural element ensuring the shaping of a flexible covering membrane retained at its periphery on said building structure, characterized in that the device is interposed between the beam and the structural element.
  9. The connecting device according to claim 8, characterized in that the structural element comprises a cap forming a point support on the cover membrane.
  10. The device according to claim 8, characterized in that the structural element comprises an arc forming a curvilinear support giving the cover membrane a double curvature.
EP13178029.8A 2012-07-25 2013-07-25 Device for tensioning a covering membrane Active EP2690230B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1257200A FR2993906B1 (en) 2012-07-25 2012-07-25 DEVICE FOR THE TENSIONING OF A RECOVERY MEMBRANE

Publications (3)

Publication Number Publication Date
EP2690230A2 EP2690230A2 (en) 2014-01-29
EP2690230A3 EP2690230A3 (en) 2017-01-04
EP2690230B1 true EP2690230B1 (en) 2022-12-14

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EP13178029.8A Active EP2690230B1 (en) 2012-07-25 2013-07-25 Device for tensioning a covering membrane

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EP (1) EP2690230B1 (en)
FR (1) FR2993906B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2835474B1 (en) * 2013-08-08 2018-10-10 ELIKRAFT Invest SA Building envelope portion for permanent structure
ITUB20154620A1 (en) * 2015-10-13 2017-04-13 Sprech Srl Leverage tensioning sheets for arched structures
FR3070993B1 (en) 2017-09-11 2020-03-06 Smc2 CONNECTION DEVICE FOR ARCS FOR SUPPORTING A COVERING CANVAS

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640296A (en) * 1970-08-28 1972-02-08 Tension Structures Co Pavilion with mechanism for automatically controlling sag and tension
DE3033838A1 (en) * 1980-09-09 1982-06-24 L. Stromeyer & Co Gmbh, 7750 Konstanz Arched textile roofing across frame sections - has length adjusters for flexible support bar ultimately forming ridge line
EP1503005A1 (en) * 2003-07-29 2005-02-02 Pierre Robin Supporting and tensioning device for a covering sheet and its installation method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2835273B1 (en) * 2002-01-29 2005-01-21 Pierre Robin DEVICE FOR SUPPORTING AND TENSIONING A BUILDING COVER MEMBRANE AND METHOD FOR CARRYING OUT THE SAME
KR101064884B1 (en) * 2009-12-29 2011-09-16 장정숙 Frame structure of auto-umbrella type tent

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640296A (en) * 1970-08-28 1972-02-08 Tension Structures Co Pavilion with mechanism for automatically controlling sag and tension
DE3033838A1 (en) * 1980-09-09 1982-06-24 L. Stromeyer & Co Gmbh, 7750 Konstanz Arched textile roofing across frame sections - has length adjusters for flexible support bar ultimately forming ridge line
EP1503005A1 (en) * 2003-07-29 2005-02-02 Pierre Robin Supporting and tensioning device for a covering sheet and its installation method

Also Published As

Publication number Publication date
EP2690230A3 (en) 2017-01-04
FR2993906B1 (en) 2014-08-08
FR2993906A1 (en) 2014-01-31
EP2690230A2 (en) 2014-01-29

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