EP3453808B1 - Connecting device for mounting on a building for the tensioning of a covering fabric - Google Patents
Connecting device for mounting on a building for the tensioning of a covering fabric Download PDFInfo
- Publication number
- EP3453808B1 EP3453808B1 EP18193813.5A EP18193813A EP3453808B1 EP 3453808 B1 EP3453808 B1 EP 3453808B1 EP 18193813 A EP18193813 A EP 18193813A EP 3453808 B1 EP3453808 B1 EP 3453808B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- arch
- connecting device
- building
- threaded rod
- cover fabric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004744 fabric Substances 0.000 title claims description 47
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 9
- 230000000717 retained effect Effects 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- 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
- E04H15/34—Supporting means, e.g. frames
- E04H15/36—Supporting means, e.g. frames arch-shaped type
-
- 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
- E04H15/64—Tent or canopy cover fastenings
- E04H15/642—Tent or canopy cover fastenings with covers held by elongated fixing members locking in longitudinal recesses of a frame
- E04H15/644—Tent or canopy cover fastenings with covers held by elongated fixing members locking in longitudinal recesses of a frame the fixing members being a beading
Definitions
- the present invention relates to a connecting device for a supporting arch of a roofing fabric of a building.
- This technology has many advantages. In particular, it allows rapid installation, has lower production costs than those of traditional techniques and allows the passage of light thanks to the translucency of the canvas.
- the roofing of the building - which can be, in a non-exhaustive way, a sports and leisure building, a school or tertiary building, etc. - is formed by a roofing fabric with double inverted curvature stretched over metal arches linked to the frame of the building.
- cover fabric is meant a polyester fabric coated with PVC having a thickness generally of the order of 1 mm.
- the cover fabric After its initial tensioning, the cover fabric undergoes a natural creep, the effects of which are treated by a connecting device between the building structure and the arches such as that shown in the document FR2993906 .
- a connecting device between the building structure and the arches such as that shown in the document FR2993906 .
- the cover fabric is subjected to climatic hazards and is stressed by thermal stresses linked to temperature variations and by mechanical stresses linked to the action of wind, rain or snow.
- the load exerted on the canvas can be 400 to 500 kg / m2 and, in extreme conditions, can reach 1000 kg / m2.
- the elastic reserve found in the mechanism described in the document FR2993906 can compress; the load due, for example, to the snow creates a compression which can cause a lowering of the arcs and, consequently, a relaxation of the cover fabric which is not desirable. Indeed, it can then form pockets in which the melt water will accumulate.
- EP 2 835 474 describes another linkage device.
- an aim of the invention is to provide a connecting device between a building structure and arches which overcomes these drawbacks.
- connection device as defined in claim
- the invention therefore proposes a connecting device between an arch and a building structure which has a function of unidirectional displacement of the arch with respect to the structure. It is specified that, in this document, the displacement of the arc is given in a reference linked to the structure of the building. In other words, the arch is movable relative to the building in a single direction in which the arch is pushed towards the cover fabric when the reserve means of prestressing is released. In the case of a building with a horizontal roof, this displacement is towards the top of the building. On the other hand, the invention prohibits movement in the reverse direction, that is to say the direction aimed at bringing the arch closer to the structure when the arch is stressed by a load which is applied to the cover fabric.
- this device makes it possible to maintain the tension of the cover fabric in a predefined range by allowing the displacement of the arc in a direction away from the structure during the creep of the cover fabric but this device prohibits the displacement of the 'arc in a direction bringing it closer to the building structure when the roof canvas is subjected to a load created, for example, by a layer of snow.
- This arrangement makes it possible to create a unidirectional effect mechanism (i) which authorizes an upward displacement of the arc in which a moment is created. at the level of each jaw which tends to make the jaw pivot in a direction which separates it from the threaded rod and allows the displacement of the arc and (ii) which prevents a displacement of the arc downwards by creating a moment at each jaw which tends to move each jaw closer to the threaded rod when a load is applied to the arc in a downward direction.
- the connecting device comprises a core supporting the two jaws, the core being mounted to rotate freely relative to the arc, which facilitates the positioning of the arc by allowing it to pivot relative to a first attachment point.
- the invention also relates to a building comprising a building structure and an arch ensuring the tensioning of a flexible covering fabric fixedly retained at its periphery on the building structure comprising a device for connecting its arches to the structure such as previously described.
- the figure 1 shows in perspective a partial view of a building 100 provided with a flexible cover membrane 110.
- This building 100 has a structure which can be, for example, made of wood.
- the structure of the building may have a network of columns 120 which support beams 130.
- Purlins 140 may be arranged between beams 130.
- the cover fabric 110 is supported and is stretched over a network of arcs 150 arranged transversely between the beams 130.
- the arcs 150 support the cover fabric 110.
- cover canvas 110 is held fixedly on two beams 130.
- the arcs 150 are connected to the beams 130 by a connecting device 1 which is shown more precisely at figures 2 to 8 .
- a beam 130 shown partially.
- a section 160 in which the cover canvas 110 is fixed.
- the cover fabric 110 is provided with a ring which is engaged in a linear cavity 170 of the section 160 thus ensuring the retention of the edge of the cover fabric 110.
- the cover fabric 110 which is retained at the edge of the sections 160 and transversely of the arcs 150 takes on a double curvature configuration.
- the arch 150 is connected to the structure of the building by a connecting device 1 which makes it possible to tension the cover fabric 110 during the construction of the building and makes it possible, as will be seen, to maintain the tension in the cover fabric 110 during the life of the building.
- the connecting device 1 has a console 2 which is fixed to the building structure.
- the console 2 comprises a plate 3 and, perpendicular to the plate 3, a gusset 5 in the form of a bracket substantially in the form of a square, the upper part of which is provided with an eye 6.
- the console 2 can be fixed on the beam 130 by bolts 8.
- a threaded rod 10 is fixed on the gusset 5; for this, the upper end of the threaded rod 10 is provided with a yoke 12 which enables the threaded rod 10 to be suspended from the bracket 5 by an appropriate axis.
- the arch 150 includes two cheeks 180 at each of its ends.
- connection between the threaded rod 10 and the arc 150 is made by means of a non-return core 15.
- the core 15 comprises two circular flanges 16 which are each engaged in one of the cheeks 180 and which are, in the example illustrated, movable in rotation with respect to the cheeks 180.
- the non-return core 15 comprises two jaws 17 articulated on the flanges 16.
- the flanges 16 are connected by two screws 20 which also act as an axis of rotation for the jaws 17 and by two spacers 21 separating the two flanges 16 by a distance which allows the passage of the threaded rod 10.
- the two jaws 17 are symmetrical and each have an axis of rotation formed by a screw 20 and an engagement zone in the threaded rod 10.
- the engagement zone is formed by a threaded zone 22 complementary to that of the threaded rod 10.
- the two jaws 17 are held towards each other by a spring 24 - which appears on the figure 3 - each end of which is fixed to a jaw 17.
- the point of attachment of the spring 24 on each jaw 17 is placed at the end of the jaw 17 opposite to that where the axis of rotation of the jaw 17 is located.
- a cover canvas 110 which is not shown on the figures 4 to 8 is previously fixed on the profiles 160.
- the cover fabric 110 is then in a configuration in which it faseye between the profiles 160.
- the console 2 equipped with a threaded rod 10 is therefore fixed to a beam 130 or to a wall.
- an arc 150 is approached from the ground towards the console 2.
- the connection of the arc 150 to the console 2 is made by engaging the non-return core 15 on the threaded rod 10.
- the threaded rod 10 is engaged in the jaws 17 which move away from one another according to a rotation with respect to their respective axes 20.
- the other end of the arch 150 is raised, generally using a nacelle, and is fixed to a bracket 2 located on an adjacent beam 130. This operation of rotating the arc 150 is made possible by the pivoting connection with respect to the cheeks 180 of the core 15 in which the threaded rod 10 is engaged.
- the arc 150 is fixed on the bracket 2 placed on the adjacent beam 130 according to the same procedure as that described above.
- the threaded rod 10 suspended from the console 2 is engaged in the non-return core 15.
- the cover canvas 110 is supported by the arch 150 which is itself fixed at each of its ends to a bracket 2.
- an operator then engages an elastic element which can be a spring 23 on the free part of the threaded rod 10.
- the elastic element is constituted by Belleville washers.
- the spring 23 is held on the washer 25 and the nut 26 targeted on the threaded rod 10.
- the spring 23 is therefore interposed between the washer 25 and the arc 150. More precisely, the spring 23 is interposed between the washer 25 and the two cheeks 180 of the arc 150. To wedge the spring 23, it is planned to provide the end of each of cheeks 180 of a cutout 28.
- the nut 26 is screwed onto the threaded rod 10 which has the effect of pushing the arc 150 in the axis of the threaded rod 10; this has the effect of putting the cover fabric 110 in a state of high tension which corresponds to the nominal tension recommended for the building in question.
- the screwing can be done by a tool measuring the tightening torque of the torque wrench type.
- the link device 1 is then in a configuration shown in figure 7 . We see on the figure 7 , the spring 23 in maximum tension since its turns are contiguous so as to create a reserve of tension which will be used to compensate for the creep of the cover fabric 110.
- the cover fabric 110 undergoes creep intrinsically linked to the constitution of the fibers in the warp and weft of the fabric; consequently, the cover fabric 110 exerts a counter tension vis-Ã -vis the arcs 150 which tends to decrease.
- This creep of the cover fabric 110 turns out harmful because a loose blanket 110 can flap under the effect of the wind or can promote the creation of water pockets.
- the creep of the cover fabric 110 is compensated by the action of the spring 23 which exerts a pushing action on the cheeks 180 of the arch 150 and allows the arch 150 to be moved upwards in the axis of the rod. threaded 10, that is to say against the cover fabric 110; in other words, the arc 150 is pushed by the spring 23 upwards and thus maintains the tension in the cover fabric 110 in the range of values recommended for a permanent building with flexible roofing.
- the figure 8 shows the connecting device 1 in its configuration in which the creep of the cover fabric 110 is compensated by the thrust of the spring 23 against the washer 25 which is fixed; in doing so, the arc 150 is pushed along the axis of the threaded rod 10 towards the top of the building, which has the effect of maintaining the tension in the cover fabric 110 within its recommended value range.
- This point is particularly important because the arcs 150 can be subjected to significant downward loads.
- the cover fabric 110 transfers this load to the arcs 150 which, in a mechanism of the prior art , leads to a lowering of the arches 150 relative to the structure of the building and, as a corollary, a loss of tension of the cover fabric 110.
- This loss of tension of the cover fabric 110 can have quite deleterious effects, in particular , in the event of snowfall since pockets of water can form in the relaxed parts of the cover fabric 110.
- the jaws 17 fulfill two functions: firstly, the jaws 17 ensure the connection between the threaded rod 10 and the arc 150 and, secondly, the jaws 17 ensure unidirectional movement of the arc 150 relative to the threaded rod 10.
- the jaws 17 block the descent of the arcs 150 and ensure that the correct tension of the cover canvas 110 is maintained even when the cover canvas 110 and, as a corollary, the arcs 150 are stressed by a snow-type load; this is particularly advantageous since it makes it possible to prevent water pockets from forming when the snow melts in any relaxed areas of the cover canvas 110.
- the figure 3 shows the unidirectional operation of the non-return core 15 with respect to the threaded rod 10.
- the thrust exerted by the threaded zones 22 of the jaws 17 on the threaded rod 10 is exerted in different directions depending on whether the non-return core 15 and therefore the jaws 17 move downward or upward relative to the threaded rod 10.
- the left view of the figure 3 shows a movement of the jaws 17 towards the top of the threaded rod 10, typically during the engagement of the arcs on the threaded rod 10 or during the creep of the cover fabric 110; a moment is created at each jaw 17 relative to the axis 20 which tends to pivot the jaw 17 in a direction which separates it from the threaded rod 10.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Tents Or Canopies (AREA)
Description
La présente invention concerne un dispositif de liaison pour un arc de soutien d'une toile de couverture d'un bâtiment.The present invention relates to a connecting device for a supporting arch of a roofing fabric of a building.
Dans le domaine de la construction, il est connu de réaliser la couverture d'une structure avec une toile souple qui est mise en tension sur la structure.In the field of construction, it is known practice to cover a structure with a flexible canvas which is put under tension on the structure.
Cette technologie présente de nombreux avantages. Elle permet notamment une mise en place rapide, présente des couts de réalisation inférieurs à ceux des techniques traditionnelles et permet le passage de la lumière grâce à la translucidité de la toile.This technology has many advantages. In particular, it allows rapid installation, has lower production costs than those of traditional techniques and allows the passage of light thanks to the translucency of the canvas.
En pratique, la couverture du bâtiment - qui peut être de manière non exhaustive un bâtiment de sport et loisir, un bâtiment scolaire ou tertiaire... - est formée par une toile de couverture à double courbure inversée tendue sur des arcs métalliques liés à la charpente du bâtiment.In practice, the roofing of the building - which can be, in a non-exhaustive way, a sports and leisure building, a school or tertiary building, etc. - is formed by a roofing fabric with double inverted curvature stretched over metal arches linked to the frame of the building.
Par toile de couverture, on entend un tissu polyester enduit de PVC ayant une épaisseur généralement de l'ordre de 1 mm.By cover fabric is meant a polyester fabric coated with PVC having a thickness generally of the order of 1 mm.
Après sa mise en tension initiale, la toile de couverture subit un fluage naturel dont les effets sont traités par un dispositif de liaison entre la structure du bâtiment et les arcs tel que celui montré par le document
Au cours de sa vie, la toile de couverture est soumise aux aléas climatiques et est sollicitée par des contraintes thermiques liées aux variations de température et par des contraintes mécaniques liées à l'action du vent, de la pluie ou de la neige.During its life, the cover fabric is subjected to climatic hazards and is stressed by thermal stresses linked to temperature variations and by mechanical stresses linked to the action of wind, rain or snow.
Ainsi, en cas de chute de neige, la charge qui s'exerce sur la toile peut être de 400 à 500 kg/m2 et, dans des conditions extrêmes, peut atteindre 1000 kg/m2. Sous l'effet de telles sollicitations, la réserve élastique que l'on trouve dans le mécanisme décrit dans le document
Dans ce contexte technique, un but de l'invention est de fournir un dispositif de liaison entre une structure de bâtiment et des arcs qui pallie ces inconvénients.In this technical context, an aim of the invention is to provide a connecting device between a building structure and arches which overcomes these drawbacks.
L'invention concerne un dispositif de liaison comme défini dans la revendicationThe invention relates to a connection device as defined in claim
L'invention propose donc un dispositif de liaison entre un arc et une structure de bâtiment qui présente une fonction de déplacement unidirectionnel de l'arc par rapport à la structure. Il est précisé que, dans le présent document, le déplacement de l'arc est donné dans un référentiel lié à la structure du bâtiment. En d'autres termes, l'arc est mobile par rapport au bâtiment dans une unique direction dans laquelle l'arc est poussé vers la toile de couverture lors de la détente des moyens de réserve de précontrainte. Dans le cas d'un bâtiment dont la couverture est horizontale, ce déplacement se fait vers le haut du bâtiment. En revanche l'invention interdit le déplacement dans la direction inverse c'est-à -dire la direction visant à rapprocher l'arc de la structure lorsque l'arc est sollicité par une charge qui s'applique sur la toile de couverture. Ainsi ce dispositif permet de maintenir la tension de la toile de couverture dans une plage prédéfinie en autorisant le déplacement de l'arc dans une direction l'éloignant de la structure lors du fluage de la toile de couverture mais ce dispositif interdit le déplacement de l'arc dans une direction le rapprochant de la structure du bâtiment lorsque la toile de couverture est soumise à une charge créée, par exemple, par une couche de neige.The invention therefore proposes a connecting device between an arch and a building structure which has a function of unidirectional displacement of the arch with respect to the structure. It is specified that, in this document, the displacement of the arc is given in a reference linked to the structure of the building. In other words, the arch is movable relative to the building in a single direction in which the arch is pushed towards the cover fabric when the reserve means of prestressing is released. In the case of a building with a horizontal roof, this displacement is towards the top of the building. On the other hand, the invention prohibits movement in the reverse direction, that is to say the direction aimed at bringing the arch closer to the structure when the arch is stressed by a load which is applied to the cover fabric. Thus, this device makes it possible to maintain the tension of the cover fabric in a predefined range by allowing the displacement of the arc in a direction away from the structure during the creep of the cover fabric but this device prohibits the displacement of the 'arc in a direction bringing it closer to the building structure when the roof canvas is subjected to a load created, for example, by a layer of snow.
Selon l'invention e dispositif de liaison comprend
- une tige filetée assurant la liaison entre la structure du bâtiment et l'arc
- deux mâchoires montées en pivot par rapport à l'arc, chaque mâchoire présentant une zone filetée conçue pour coopérer avec la tige filetée et maintenues en contact l'une vers l'autre par un ressort.
- a threaded rod ensuring the connection between the building structure and the arch
- two jaws pivotally mounted with respect to the arc, each jaw having a threaded zone designed to cooperate with the threaded rod and held in contact with one another by a spring.
Cette disposition permet de créer un mécanisme à effet unidirectionnel (i) qui autorise un déplacement vers le haut de l'arc dans lequel il se crée un moment au niveau de chaque mâchoire qui tend à faire pivoter la mâchoire dans une direction qui l'écarte de la tige filetée et autorise le déplacement de l'arc et (ii) qui interdit un déplacement de l'arc vers le bas en créant un moment au niveau de chaque mâchoire qui tend à rapprocher chaque mâchoire de la tige filetée lorsqu'une charge s'applique à l'arc dans une direction descendante.This arrangement makes it possible to create a unidirectional effect mechanism (i) which authorizes an upward displacement of the arc in which a moment is created. at the level of each jaw which tends to make the jaw pivot in a direction which separates it from the threaded rod and allows the displacement of the arc and (ii) which prevents a displacement of the arc downwards by creating a moment at each jaw which tends to move each jaw closer to the threaded rod when a load is applied to the arc in a downward direction.
De façon préférentielle, le dispositif de liaison comprend un noyau supportant les deux mâchoires, le noyau étant monté libre en rotation par rapport à l'arc, ce qui facilite la mise en place de l'arc en lui permettant de pivoter par rapport à un premier point de fixation.Preferably, the connecting device comprises a core supporting the two jaws, the core being mounted to rotate freely relative to the arc, which facilitates the positioning of the arc by allowing it to pivot relative to a first attachment point.
Selon d'autres dispositions de l'invention :
- à chacune de ses extrémités, l'arc comprend deux joues parallèles et en ce que le noyau comprend deux flasques montés libres en rotation respectivement dans chacune des joues.
- le noyau comprend deux axes sur chacun desquels une mâchoire est montée en pivot.
- le noyau comprend deux entretoises.
- le dispositif de liaison comprend un écrou et une rondelle engagée à l'extrémité libre de la tige filetée et un élément élastique du groupe comprenant un ressort et un empilement de rondelles Belleville interposé entre la rondelle et l'arc.
- chacune des joues comprend une découpe permettant de caler l'élément élastique.
- le dispositif comprend une console conçue pour être fixée sur la structure du bâtiment, la console présentant une platine et un gousset doté d'un œil sur lequel est suspendue la tige filetés.
- at each of its ends, the arch comprises two parallel cheeks and in that the core comprises two flanges mounted to rotate freely respectively in each of the cheeks.
- the core comprises two axes on each of which a jaw is pivotally mounted.
- the core includes two spacers.
- the connecting device comprises a nut and a washer engaged at the free end of the threaded rod and an elastic element of the group comprising a spring and a stack of Belleville washers interposed between the washer and the arc.
- each of the cheeks comprises a cutout making it possible to wedge the elastic element.
- the device comprises a bracket designed to be fixed to the building structure, the bracket having a plate and a gusset provided with an eye on which the threaded rod is suspended.
L'invention concerne également un bâtiment comprenant une structure de bâtiment et un arc assurant la mise en tension d'une toile de couverture souple fixement retenue à sa périphérie sur la structure du bâtiment comprenant un dispositif de liaison de ses arcs sur la structure tel que précédemment décrit.The invention also relates to a building comprising a building structure and an arch ensuring the tensioning of a flexible covering fabric fixedly retained at its periphery on the building structure comprising a device for connecting its arches to the structure such as previously described.
Pour sa bonne compréhension, l'invention est décrite en référence aux dessins annexés représentant à titre d'exemple non limitative une forme de réalisation de l'invention :
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Figure 1 est une vue d'un bâtiment couvert présentant une structure et un réseau d'arcs sur lequel est tendue une toile de couverture ; -
Figure 2 est une vue en coupe d'un dispositif de liaison entre une structure de bâtiment et un arc ; -
Figure 3 est une vue illustrant un mécanisme à effet unidirectionnel mis en œuvre dans le dispositif selon l'invention ; -
Figures 4 Ã 8 montrent la mise en Å“uvre du dispositif de liaison.
-
Figure 1 is a view of a roofed building with a structure and a network of arches on which is stretched a cover fabric; -
Figure 2 is a sectional view of a connecting device between a building structure and an arch; -
Figure 3 is a view illustrating a unidirectional effect mechanism implemented in the device according to the invention; -
Figures 4 to 8 show the implementation of the linking device.
La
Ce bâtiment 100 possède une structure qui peut être, par exemple, réalisée en bois.This
Comme on peut le voir sur la
La toile de couverture 110 est supportée et est tendue sur un réseau d'arcs 150 disposés transversalement entre les poutres 130. Les arcs 150 soutiennent la toile de couverture 110.The
Il est précisé que la toile de couverture 110 est maintenue fixement sur deux poutres 130.It is specified that the
Les arcs 150 sont reliés aux poutres 130 par un dispositif de liaison 1 qui est représenté plus précisément aux
On peut voir sur la
La toile de couverture 110 qui est retenue en rive sur les profilés 160 et transversalement sur les arcs 150 prend une configuration en double courbure.The
A chacune de ses extrémités, l'arc 150 est relié à la structure du bâtiment par un dispositif de liaison 1 qui permet de mettre en tension la toile de couverture 110 lors de construction du bâtiment et permet, comme on va le voir, de maintenir la tension dans la toile de couverture 110 au cours de la vie du bâtiment.At each of its ends, the
Le dispositif de liaison 1 présente une console 2 qui est fixée à la structure du bâtiment.The connecting
La console 2 comprend une platine 3 et, perpendiculaire à la platine 3, un gousset 5 en forme de potence sensiblement en forme d'équerre dont la partie supérieure est dotée d'un œil 6. La console 2 peut être fixée sur la poutre 130 par des boulons 8.The
Une tige filetée 10 vient se fixer sur le gousset 5 ; pour cela, l'extrémité supérieure de la tige filetée 10 est pourvue d'une chape 12 qui permet de suspendre la tige filetée 10 à la potence 5 par un axe approprié.A threaded
L'arc 150 comprend deux joues 180 à chacune de ses extrémités.The arch 150 includes two
La liaison entre la tige filetée 10 et l'arc 150 se fait par l'intermédiaire d'un noyau 15 anti-retour.The connection between the threaded
Le noyau 15 comprend deux flasques 16 circulaires qui sont chacune engagée dans une des joues 180 et qui sont, dans l'exemple illustré, mobiles en rotation par rapport aux joues 180.The
Entre les deux flasques 16, le noyau 15 anti-retour comprend deux mâchoires 17 articulées sur les flasques 16. De façon concrète, les flasques 16 sont reliées par deux vis 20 qui font également office d'axe de rotation pour les mâchoires 17 et par deux entretoises 21 séparant les deux flasques 16 d'une distance qui permet le passage de la tige filetée 10.Between the two
Les deux mâchoires 17 sont symétriques et présentent chacune un axe de rotation formé par une vis 20 et une zone d'engagement dans la tige filetée 10. En pratique, la zone d'engagement est formée par une zone filetée 22 complémentaire de celui de la tige filetée 10.The two
Les deux mâchoires 17 sont maintenues l'une vers l'autre par un ressort 24 - qui apparait sur le
Il est également prévu un ressort 23 qui est engagé sur la tige filetée 10 et qui est interposé entre une rondelle 25 retenue par un écrou 26 et les joues 180 de l'arc 150. La fonction du ressort 23 apparaîtra plus loin.There is also provided a
La mise en œuvre de l'invention se déroule de la manière suivante, en référence aux
Une toile de couverture 110 qui n'est pas représentée sur les
La console 2 équipée d'une tige filetée 10 est donc fixée sur une poutre 130 ou sur un mur.The
A l'aide d'une nacelle, un arc 150 est approché depuis le sol vers la console 2. La connexion de l'arc 150 à la console 2 est réalisée en engageant le noyau 15 anti-retour sur la tige filetée 10. Comme on peut le voir sur la vue gauche de la
Dans cette position qui est illustrée à la
L'autre extrémité de l'arc 150 est relevée, généralement à l'aide d'une nacelle, et est fixé à une console 2 située sur une poutre 130 adjacente. Cette opération de rotation de l'arc 150 est rendue possible par la liaison pivotante par rapport aux joues 180, du noyau 15 dans lequel la tige filetée 10 est engagée.The other end of the arch 150 is raised, generally using a nacelle, and is fixed to a
En fin de course, l'arc 150 vient se fixer sur la console 2 placée sur la poutre 130 adjacente selon la même procédure que celle décrite précédemment. La tige filetée 10 suspendue à la console 2 est engagée dans le noyau 15 anti-retour.At the end of the stroke, the
Dans cette configuration, la toile de couverture 110 est soutenue par l'arc 150 qui est lui-même fixé à chacune de ses extrémités à une console 2.In this configuration, the
Comme le montre la
Le ressort 23 est donc interposé entre la rondelle 25 et l'arc 150. Plus précisément, le ressort 23 est interposé entre la rondelle 25 et les deux joues 180 de l'arc 150. Pour caler le ressort 23, il est prévu de doter l'extrémité de chacune de joues 180 d'une découpe 28.The
L'écrou 26 est vissé sur la tige fileté 10 ce qui a pour effet de pousser le l'arc 150 dans l'axe de la tige filetée 10 ; cela a pour effet de mettre la toile de couverture 110 dans un état de forte tension qui correspond à la tension nominale préconisée pour le bâtiment en question. Le vissage peut se faire par un outil mesurant de couple de serrage de type clé dynamométrique. Le dispositif de liaison 1 est alors dans une configuration représentée à la
En effet, au cours du temps, la toile de couverture 110 subit un fluage lié intrinsèquement à la constitution des fibres en chaine et trame de la toile ; par conséquent, la toile de couverture 110 exerce une contre tension vis-à -vis des arcs 150 qui a tendance à diminuer. Ce fluage de la toile de couverture 110 s'avère néfaste car une toile de couverture 110 détendue peut battre sous l'effet du vent ou peut favoriser la création de poches d'eau.Indeed, over time, the
Le fluage de la toile de couverture 110 est compensé par l'action du ressort 23 qui exerce une action de poussée sur les joues 180 de l'arc 150 et permet de déplacer l'arc 150 vers le haut dans l'axe de la tige filetée 10 c'est-à -dire contre la toile de couverture 110 ; en d'autres termes, l'arc 150 est poussé par le ressort 23 vers le haut et maintient ainsi la tension dans la toile de couverture 110 dans la plage de valeurs préconisée pour un bâtiment permanent à couverte souple.The creep of the
Cela est rendu possible par le noyau 15 dont les mâchoires 17 s'écartent et autorise le déplacement de l'arc 150 vers le haut du bâtiment pour maintenir la tension dans la toile de couverture 110.This is made possible by the
La
Il est important de noter que le déplacement vers le haut de l'arc 150 sous l'action du ressort 23 est possible car les mâchoires 17 s'écartent et autorisent un déplacement du noyau 15 et de l'arc 150 dans une unique direction en l'espèce la direction emmenant l'arc 150 contre la toile de couverture 110.It is important to note that the upward displacement of the
Le déplacement inverse du noyau 15 et donc de l'arc 150 par rapport à la tige fileté 10 est, en revanche, impossible car ce déplacement n'est pas autorisé par les mâchoires 17.The reverse displacement of the
Ce point est tout particulièrement important car les arcs 150 peuvent être soumis à des charges descendantes importantes.This point is particularly important because the
En effet, lorsqu'une charge est appliquée à la toile de couverture 110, par exemple, lors d'une chute de neige, la toile de couverture 110 reporte cette charge sur les arcs 150 ce qui, dans un mécanisme de l'art antérieur, entraine un abaissement des arcs 150 par rapport à la structure du bâtiment et, corollairement, une perte de tension de la toile de couverture 110. Cette perte de tension de la toile de couverture 110 peut présenter des effets tout à fait délétères, en particulier, en cas de chute de neige puisque des poches d'eau peuvent se former dans les parties détendues de la toile de couverture 110.Indeed, when a load is applied to the
Avec le dispositif de liaison objet de l'invention, les mâchoires 17 remplissent deux fonctions : en premier lieu, les mâchoires 17 assurent la liaison entre la tige filetée 10 et l'arc 150 et, en second lieu, les mâchoires 17 assurent un déplacement unidirectionnel de l'arc 150 par rapport à la tige filetée 10.With the connecting device which is the subject of the invention, the
En effet, les mâchoires 17 bloquent la descente des arcs 150 et assurent le maintien de la bonne tension de la toile de couverture 110 même lorsque la toile de couverture 110 et, corollairement, les arcs 150 sont sollicités par une charge de type neige ; ceci est particulièrement avantageux puisque cela permet d'éviter que lors de la fonte de la neige il ne se forme des poches d'eau dans les éventuelles zones détendues de la toile de couverture 110.Indeed, the
La
Bien entendu, l'invention n'est pas limitée à la forme de réalisation décrite ci-dessus à titre d'exemple non limitatif mais elle en embrasse au contraire toutes les formes de réalisation comme définies dans les revendications annexées.Of course, the invention is not limited to the embodiment described above by way of non-limiting example, but on the contrary it embraces all the embodiments thereof as defined in the appended claims.
Claims (9)
- A connecting device (1) intended to be installed on a building structure (130) to ensure the tensioning of a flexible cover fabric (110) fixedly retained at the periphery thereof on the structure of the building, the connecting device comprising:- an arch (150) against which the cover fabric (110) is intended to be tensioned,- a threaded rod (10) capable of ensuring the connection between the structure of the building and the arch (150);- elastic prestressing reserve means intended to be interposed between the structure and the arch (150) allowing compensating for a creep of the cover fabric (110), and- means for unidirectional displacement of the arch (150) relative to the structure capable of enabling the displacement of the arch (150) in a direction moving the arch (150) away from the structure towards the cover fabric (110) upon the release of the prestressing reserve means and capable of preventing the reverse displacement of the arch (150) in a direction bringing the arch (150) closer to the structure under the effect of a load applied to the cover fabric (110),
bracket characterized in that said means for unidirectional displacement of the arch comprise two jaws (17) pivotally mounted relative to the arch (150), each jaw (17) having a threaded area (22) designed to cooperate with the threaded rod (10), and held in contact with each other by a spring (24), the jaws (17) ensuring the connection between the threaded rod (10) and the arch (150) and, a unidirectional displacement of the arch (150) relative to the threaded rod (10). - The connecting device according to claim 1, characterized in that the connecting device (1) comprises a core (15) supporting the two jaws (17), the core (15) being mounted free in rotation relative to the arch (150).
- The connecting device according to claim 2, characterized in that, at each of the ends thereof, the arch (150) comprises two parallel cheeks (180) and in that the core (15) comprises two flanges mounted free in rotation respectively in each of the cheeks (180).
- The connecting device according to claim 3, characterized in that the core (15) comprises two axes (20) on each of which a jaw (17) is pivotally mounted.
- The connecting device according to claim 3 or claim 4, characterized in that the core (15) comprises two spacers (21).
- The connecting device according to any of claims 1 to 5, characterized in that the connecting device (1) comprises a nut (26) and a washer (25) engaged at the free end of the threaded rod (10) and an elastic element of the group comprising a spring (23) and a stack of Belleville washers interposed between the washer (25) and the arch (150).
- The connecting device according to claim 6, when it is dependent on claim 4, characterized in that each of the cheeks (180) comprises a cutout (28) allowing wedging the elastic element.
- The connecting device according to any of claims 1 to 7, characterized in that the device comprises a bracket (2) designed to be fastened on the structure of the building, the bracket (2) having a plate (3) and a gusset (5) provided with an eye (6) on which the threaded rod (10) is suspended.
- A building comprising a building structure (130) and an arch (150) ensuring the tensioning of a flexible cover fabric (110) fixedly retained at the periphery thereof on the structure of the building, characterized in that it comprises a device for connecting this arch (150) on the structure according to any of claims 1 to 8.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1758383A FR3070993B1 (en) | 2017-09-11 | 2017-09-11 | CONNECTION DEVICE FOR ARCS FOR SUPPORTING A COVERING CANVAS |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3453808A1 EP3453808A1 (en) | 2019-03-13 |
EP3453808B1 true EP3453808B1 (en) | 2020-08-26 |
Family
ID=60955147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18193813.5A Active EP3453808B1 (en) | 2017-09-11 | 2018-09-11 | Connecting device for mounting on a building for the tensioning of a covering fabric |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3453808B1 (en) |
FR (1) | FR3070993B1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2811694B1 (en) * | 2000-07-12 | 2003-01-17 | Paul Mathis Ets | FLEXIBLE REMOVABLE COVER, ESPECIALLY LARGE-SIZED BUILDINGS AND ESPECIALLY SPORTS BUILDINGS |
EP1503005A1 (en) * | 2003-07-29 | 2005-02-02 | Pierre Robin | Supporting and tensioning device for a covering sheet and its installation method |
FR2993906B1 (en) * | 2012-07-25 | 2014-08-08 | Smc2 | DEVICE FOR THE TENSIONING OF A RECOVERY MEMBRANE |
EP2835474B1 (en) * | 2013-08-08 | 2018-10-10 | ELIKRAFT Invest SA | Building envelope portion for permanent structure |
-
2017
- 2017-09-11 FR FR1758383A patent/FR3070993B1/en active Active
-
2018
- 2018-09-11 EP EP18193813.5A patent/EP3453808B1/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
EP3453808A1 (en) | 2019-03-13 |
FR3070993B1 (en) | 2020-03-06 |
FR3070993A1 (en) | 2019-03-15 |
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