EP2107172B1 - Water retention box - Google Patents

Water retention box Download PDF

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Publication number
EP2107172B1
EP2107172B1 EP09305277A EP09305277A EP2107172B1 EP 2107172 B1 EP2107172 B1 EP 2107172B1 EP 09305277 A EP09305277 A EP 09305277A EP 09305277 A EP09305277 A EP 09305277A EP 2107172 B1 EP2107172 B1 EP 2107172B1
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EP
European Patent Office
Prior art keywords
bottom wall
tank according
tank
support platform
lower support
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Not-in-force
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EP09305277A
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German (de)
French (fr)
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EP2107172A1 (en
Inventor
Philippe Guibert
Fabien Yvai
Stéphane Kugener
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Aliaxis Participations SA
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Aliaxis Participations SA
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Priority to PL09305277T priority Critical patent/PL2107172T3/en
Publication of EP2107172A1 publication Critical patent/EP2107172A1/en
Application granted granted Critical
Publication of EP2107172B1 publication Critical patent/EP2107172B1/en
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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
    • E03F1/002—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells

Definitions

  • the field of the present invention is that of devices for the retention or storage of water and more particularly that of the flow of rainwater and its regulation.
  • a number of rainwater retention devices are known, whose purpose is to temporarily store or retain water in order to regulate the flow that flows downstream from a given point, in the case of a heavy rain or the overflow of a gutter.
  • Some of these devices are characterized by a cavity buried in the ground to achieve a hydraulic buffer between a water inlet, whose flow is suddenly very high, and a downstream pipe that can take into account a moderate flow. The water accumulates during the high flow and is then returned downstream through a calibrated drain.
  • Other devices are designed so that the leakage flow is established by natural infiltration, rather than by a downstream pipe. These devices help replenish water tables when geological conditions are favorable. Still other devices allow to partially or completely retain the accumulated water for later use.
  • These devices are generally constituted by parallelepipedic plastic bins, perforated walls to allow the passage of water. They are assembled together to form a large block, ranging from a few tens to a few thousand m 3 , depending on the size of the buffer that is desired.
  • This buffer is placed inside the cavity, itself covered with one or more membranes which makes it possible to obtain, depending on the type of membranes used, a sealed volume vis-à-vis the ground in which it is implanted and to conserve the excess water the time that it is evacuated by the calibrated drain, or for a later use, is a permeable volume from which is carried out the slow diffusion towards the medium, by infiltration.
  • Such devices are the subject of patent applications such as patents or patent applications FR2499515 , EP0943737 which discloses a holding tank according to the preamble of claim 1, EP1416099 , EP1887145 , JP63268823 or JP9112792 . They are characterized by retention tanks, stacked head to tail two by two, which have the shape of a parallelepiped with an open face and the opposite face carrying columns which provide the support of the upper tray layer.
  • the present invention aims to improve existing systems by providing a water retention tank that can support large loads (up to 450 Kilo Newtons per m 2 against 30 to 40 Kilo Newtons per m 2 for some trays of the prior art), while minimizing the amount of material that is needed to produce it.
  • the invention relates to a water retention tank according to claim 1.
  • two identical trays can be stacked in a position rotated 180 ° from each other, with the support platforms bottom of a tray cooperating with the upper support platforms of the tray from below.
  • the connecting walls take up the compression efforts between support platforms. They can be dimensioned to present an interesting ratio between the compressive forces and allowable buckling and the amount of material required.
  • Such a shape of the connecting walls provides good resistance to compression and buckling, without requiring a large amount of material.
  • the inner portion and the outer portion are inclined to allow a nesting of the tray with an identical tray.
  • a set of identical bins can be stored and transported occupying a limited space.
  • the inner portions and / or the outer portions of two adjacent connecting walls delimit a V-shaped notch for the passage of water.
  • the tray comprises four corner pillars at the corners of the bottom wall, each corner pillar having a wider lower platform along one side of the bottom wall than another to correspond to the alignment of the lower support platforms of the side walls.
  • the tray comprises, at an upper support platform, a hole and, at a corresponding lower support platform, a pad. This allows centering stacked bins.
  • the tray comprises a strapping which surrounds the side walls at the lower support platforms.
  • the outer portion extends between an outer side of an upper support platform and the strapping.
  • the strapping has, along two adjacent sides, at least one male fastener and, along the other two sides, at least one female fastener.
  • the male fastener comprises a tongue of T-shaped section protruding from the strapping
  • the female fastener comprises a receiving groove.
  • Such a tongue can be made without exceeding far beyond the strapping, and without constituting a blunt shape, while being able to cooperate with the groove of an adjacent tray.
  • the risk of damaging the tongue by impact, and the risk of damaging the membranes by punching are therefore limited.
  • the bottom wall comprises a number of hollow columns, extending in the same direction as the connecting walls, towards the open face of the tray, and of sufficient length to cooperate with the Bottom wall of the tray immediately below when stacking. Unlike the tanks of the prior art, these columns are reduced in number so as not to penalize the water capacity of the system, and to optimize the ratio between the mechanical strength and the amount of material used.
  • these columns are arranged in quincunxes, to allow, in a certain position, the embedding of the bins into each other in one reduced volume suitable for transport and storage, and in the other position, by pivoting at 180 ° in the plane of the bottom wall, the superposition of the bins one above the other in an expanded volume corresponding to the service position .
  • the arrangement of the columns, in particular their spacing makes it possible to preserve a sufficiently large interior volume, free of obstacles, capable of receiving an accessory (s), such as for example a drain, or a conduit, or a conduit of hydrocurage.
  • the free internal volume has the possibility of integrating accessory (s) of general cylindrical or inverted "U" shape, of sufficient section for conventional inspection procedures by remote control camera and cleaning by hydrocuring.
  • This (these) accessory (s) is (are) then wedged (s) laterally by the columns, inside the bins, and can (may) extend through several consecutive trays in a rectilinear arrangement favorable both to the function referred to as ease of installation.
  • the walls of the bins can be locally indented to let through the tubular elements from side to side.
  • This modification has the advantage of allowing the sequential placement of trays bottom excavation, then tubular accessories of indifferent length, then bins.
  • This sequence is clearly advantageous in terms of ease of installation and time saving, compared to the prior art, which requires the lateral introduction of the tubular accessories through the tanks after their introduction into the retention cavity. It is even more advantageous in the case of the implantation of a tubular accessory provided with a filter medium on its outer face.
  • the mesh of crossed ribs which constitutes the bottom of the tray comprises, in two symmetrical locations with respect to the geometric axes of the bottom, meshes whose spacing is substantially wider than the set of surrounding meshes.
  • these initial support and stalling functions are obtained by the use of generally flat trays, able to fit under the underside of the trays, at the rate of one tray per tray , therefore interposed between the (the) membrane (s) of the bottom of the cavity and the lower support platforms bins.
  • These plates have a total bearing area much greater than the sum of the areas of the lower bearing surfaces of the tanks, and are therefore able to reduce the risk of punching damage to the membrane (s).
  • the plate comprises at least one peripheral upper support platform, which cooperates with the plurality of lower support platforms of the tray.
  • the rectangular format of the tray has dimensions slightly smaller than the dimensions of the strapping of the side walls of the tray, which allows to embed the tray inside the strapping, thereby achieving a centering of one piece relative to the other .
  • the platform of upper peripheral support of the plate offers, by analogy with the upper support platforms bins, holes adapted to cooperate with the pads of the lower support platforms bins. These complementary recesses have the function of preventing the connecting walls of the bins from sliding outwardly of the support rectangle under the combined efforts of compression and buckling, suffered in service situation. In this assembly position, the columns of the bins are supported on the surface of the trays, in order to transmit the load to the ground.
  • the plate can advantageously be fixed to the container in final assembly position before its final placement in the bottom of the retention cavity.
  • the handling of the trays of the first layer, and their associated tray is therefore simultaneous, resulting in greater ease of positioning and a gain of time.
  • the fixing of the trays under the trays is done by hooking type "clips" at the end of the columns of the bins provided for this purpose with a corresponding hole.
  • FIG. 1 and 2 we see a set of two identical containers 1; they are nested one inside the other on the figure 1 and returned and stacked on top of each other on the figure 2 .
  • the upper tray is rotated in a horizontal plane by 180 ° with respect to the lower tray.
  • the points of support on each of these bins are arranged so that, before this turnaround of 180 ° they are in a position where the nesting is possible and that after this turnaround is the stack that becomes it.
  • the tanks 1 have a substantially parallelepipedal shape, comprising a bottom wall 2, conventionally designated as the upper part of the tank (because of its position when the tanks are stacked as on the figure 2 ), which has the form of a grid consisting of a set of short intersecting vertical walls. They also have side walls 3 formed by a succession of pillars 4 V-shaped and inverted V, which alternate alternately. This V shape is defined to allow nesting boxes in one another for storage or transport. In order to ensure points of support for the nesting or stacking of the tanks these V and these inverted V are truncated near their pointed end, so as to reveal lower support platforms 8 planes on the side of the face and the upper support platforms 9 planes on the side of the bottom wall 2.
  • the side walls 3 are thus in the form of a ribbon of a given width, taking place along the V and inverted V and of their support platforms. The width of the ribbon is determined according to the load that the tray 1 is supposed to support.
  • a side wall 3 comprises a plurality of upper support platforms 9 periodically arranged along one side of the bottom wall 2.
  • the lower support platforms 8 are arranged alternately with respect to the upper support platforms 9 , away from the bottom wall 2.
  • the upper support platforms 9 of a side wall 3 are arranged in image positions of the lower support platforms 8 of the side wall 3 opposite to the geometric axis passing through the center of the bottom of the tank and perpendicular to the bottom of the tank.
  • a pivoting of a tray 180 ° relative to this axis puts the lower platforms 8 of a tray to the right of the upper platforms 9 of a tray placed underneath. This allows a stack of several identical trays 1 as shown in FIG. figure 2 .
  • Each side wall 3 further comprises a plurality of connecting walls 30 connecting the upper support platforms 9 to the lower support platforms 8 by taking up the compression forces.
  • an upper support platform 9 is connected to the two lower support platforms 8 adjacent respectively by two symmetrical connecting walls 30.
  • a connecting wall 30 comprises an inner portion 32, located on the inner side of the tray 1, a portion of thickness 31, arranged in the thickness of the side wall 3, and an outer portion 33, located on the side of the the outside of the tray 1.
  • the inner portion 32 extends between the side of the bottom wall 2 and an inner side 36 of a lower support platform 8.
  • the thickness portion 31 extends between a side d thickness 38 of an upper support platform 9 and a thickness side 39 of an adjacent lower support platform 8.
  • the outer portion 33 extends between an outer side 37 of an upper support wall 9 and a strapping 10 which will be described below.
  • the inner portion 32, the thickness portion 31 and the outer portion 33 of the connecting walls 30 are inclined so as to form the pillars 4 which, as said above, are frustoconical to allow interlocking of several identical tanks 1 as on the figure 1 .
  • the inner portions 32 of two adjacent connecting walls 30 delimit a notch 34 V-shaped for the passage of water.
  • the outer portions 33 of two adjacent connecting walls 30 delimit a notch 35 also V-shaped for the passage of water.
  • the side walls 3 meet at the four corners and are connected to each other by corner pillars 5.
  • the upper and lower faces of these corner pillars 5 are arranged, in known manner, to allow interlocking bins 1 as illustrated on the figure 1 , and stacking them as illustrated on the figure 2 after 180 ° pivoting of every other bin.
  • the lower faces 40 of the different Angle pillars 5 are more or less extended along the sides of the tray 1 to introduce the aforementioned offset between the support platforms of opposite sides.
  • columns 6 which extend from the bottom 2 in the direction of the open face, and which terminate in a foot of column 7 in the form of a plane lower shoulder, which is parallel to the bottom 2 and located approximately at the same height as the lower platforms 8 of the pillars 4 of the side walls 3 and those of the corner pillars 5.
  • the lower parts of the side walls 3 are gripped, and held together, by a strapping 10, which ensures the cohesion of the pillars 4 and corner pillars 5, and thus ensures the absence of a large gap walls 3 when the tray 1 rests on its open part and that heavy loads are applied on it.
  • Each support 11 at the bottom of the column is placed on the bottom 2 at a position corresponding to the image of the foot of a column 6 with respect to the axis of pivoting of the tray 1.
  • the columns 6 have a length slightly greater than that of the pillars 4 of the side walls 3 or that of the corner pillars 5.
  • the walls of the grids forming the bottom 2 have slightly shortened lengths to allow the entry of the legs 7 of columns in the corresponding supports 11.
  • pawns of centering 12 are positioned on some lower platforms 8 of each side wall 3, and parallel holes 13 are formed in the upper platforms 9 which are at locations corresponding to the lower platforms 8 they will support after the pivoting 180 °.
  • this clip 18 allows if the trays 14 are placed at the bottom of the excavation beforehand, to center the bins 1 relative to each other, and otherwise to secure the bins with the trays before their introduction and so to handle them more easily. Because of this possibility of simultaneous manipulation of the trays 14 and the tanks 1, assembled for the first layer at the bottom of the excavation, it is not necessary to equip the trays 14 with the same handling handles 45 as those integrated in the bottoms 2 bins 1.
  • FIG. 7 we see an attachment device of two tanks 1 positioned side by side, as they are to form a water storage buffer.
  • On the side edge of the strapping 10 are positioned on two adjacent sides two T-shaped male fasteners 19, and on the other two adjacent sides of the groove-like female fasteners 20.
  • the male fasteners 19 can cooperate with the female fasteners to prevent any lateral displacement of a tray 1 relative to the tray to which it is connected.
  • the arrangement of two male fasteners on two adjacent sides and two female fasteners on the other two adjacent sides allows an assembly of the bins on the same layer in an undifferentiated sequence, that is to say that the deployment of the bins can s' do this by first assembling the short sides to form a long line or first the long sides to form a wide line. It is also possible to progress in parallel along the short sides and long sides, which gives all the flexibility necessary for the construction site. It is not necessary to wait until the entire search is done to begin the assembly of the bins, both horizontally and vertically.
  • connection 41 fixed on the side wall 3 of a tank 1.
  • the connection 41 makes it possible to connect the hydraulic buffer to a conduit for the supply of the basin, the emptying or the leakage flow of the basin or the creation of a vent or overflow.
  • the connector 41 comprises a connecting sleeve for connecting to the conduit and fixing means on the side wall 3 of a container 1.
  • it may be a means cooperating with the notches 35 mentioned above and with the strapping 10, in order to fix the connection 41 by clipping.
  • This mode of attachment advantageously makes it possible to arrange the coupling 41 indifferently to one or the other of the walls 3 of the tanks 1, to one or the other of the notches 35 in combination with the strapping 10, at any level of Stacking, without any prior preparation of the bins 1.
  • This feature provides a high degree of modularity of the implantation of the supply and leakage ducts of the basin.
  • the connector 41 has a planar annular surface 42 allowing, with a not shown flange, the fixing of the geomembrane to the connection 41 in a sealed manner.
  • the figure 9 is a perspective view from above of several tanks 1 forming the upper face of a hydraulic buffer.
  • the connectors 43 provided with perpendicular excrescences (not shown) connecting two or four adjacent tanks 1.
  • the connectors 43 provide a support surface for the geomembrane, to prevent it from piercing under the weight of the ground that pushes it into the spaces between the bins 1.
  • the figure 3 shows that the bins 1 have, at their bottom wall 2, eyelets 44 for fixing the connectors 43, for example by clipping.
  • the figure 10 has several juxtaposed 1 bins in service situation, offering the option “visitable” or “hydrocurable”.
  • the side walls 3 of the short sides of the tanks 1 are notched by machining so as to allow the crossing of the tanks 1 through a tubular accessory 46 constituting a drain, or a visit channel for inspection by remote-controlled camera, or a canal of hydrocuring.
  • This tubular accessory 46 may be of indifferent length, and may be placed at the bottom of the excavation in one or more segments, on the trays 14, then covered by the trays 1 while maintaining its straightness.

Description

Le domaine de la présente invention est celui des dispositifs de rétention ou de stockage de l'eau et plus particulièrement celui de l'écoulement des eaux pluviales et de sa régulation.The field of the present invention is that of devices for the retention or storage of water and more particularly that of the flow of rainwater and its regulation.

On connaît un certain nombre de dispositifs de rétention d'eaux pluviales, qui ont pour objet un stockage ou une rétention temporaire d'eaux afin de réguler le débit qui s'écoule en aval d'un point donné, dans le cas d'une forte pluie ou du débordement d'un caniveau. Certains de ces dispositifs se caractérisent par une cavité enfouie dans le sol permettant de réaliser un tampon hydraulique entre une arrivée d'eau, dont le débit est soudainement très élevé, et une conduite aval qui ne peut prendre en compte qu'un débit modéré. L'eau s'y accumule le temps du débit élevé et est ensuite restituée vers l'aval à travers un drain calibré. D'autres dispositifs sont conçus de sorte que le débit de fuite s'établisse par infiltration naturelle, plutôt que par une conduite aval. Ces dispositifs contribuent à reconstituer les nappes phréatiques lorsque les conditions géologiques sont favorables. D'autres dispositifs encore permettent de retenir partiellement ou en totalité l'eau accumulée pour une utilisation ultérieure.A number of rainwater retention devices are known, whose purpose is to temporarily store or retain water in order to regulate the flow that flows downstream from a given point, in the case of a heavy rain or the overflow of a gutter. Some of these devices are characterized by a cavity buried in the ground to achieve a hydraulic buffer between a water inlet, whose flow is suddenly very high, and a downstream pipe that can take into account a moderate flow. The water accumulates during the high flow and is then returned downstream through a calibrated drain. Other devices are designed so that the leakage flow is established by natural infiltration, rather than by a downstream pipe. These devices help replenish water tables when geological conditions are favorable. Still other devices allow to partially or completely retain the accumulated water for later use.

Ces dispositifs sont en général constitués par des bacs parallélépipédiques en matière plastique, aux parois ajourées pour permettre le passage de l'eau. Ils sont assemblés entre eux de façon à constituer un bloc de grande dimension, pouvant aller de quelques dizaines à quelques milliers de m3, en fonction de la taille du tampon que l'on souhaite réaliser. Ce tampon est disposé à l'intérieur de la cavité, elle-même recouverte d'une ou plusieurs membranes qui permet(tent) d'obtenir selon le type de membranes utilisées, soit un volume étanche vis-à-vis du terrain dans lequel il est implanté et de conserver l'eau excédentaire le temps qu'elle s'évacue par le drain calibré, ou encore pour une utilisation ultérieure, soit un volume perméable à partir duquel s'opère la diffusion lente vers le milieu, par infiltration.These devices are generally constituted by parallelepipedic plastic bins, perforated walls to allow the passage of water. They are assembled together to form a large block, ranging from a few tens to a few thousand m 3 , depending on the size of the buffer that is desired. This buffer is placed inside the cavity, itself covered with one or more membranes which makes it possible to obtain, depending on the type of membranes used, a sealed volume vis-à-vis the ground in which it is implanted and to conserve the excess water the time that it is evacuated by the calibrated drain, or for a later use, is a permeable volume from which is carried out the slow diffusion towards the medium, by infiltration.

De tels dispositifs font l'objet de demandes de brevets comme par exemple les brevets ou demandes de brevets FR2499515 , EP0943737 , qui décrit un bac de rétention selon le preambule de la revendication 1, EP1416099 , EP1887145 , JP63268823 ou JP9112792 . Ils se caractérisent par des bacs de rétention, empilés tête-bêche deux à deux, qui ont la forme d'un parallélépipède avec une face ouverte et la face opposée porteuse de colonnes qui assurent le soutènement de la couche de bacs supérieure.Such devices are the subject of patent applications such as patents or patent applications FR2499515 , EP0943737 which discloses a holding tank according to the preamble of claim 1, EP1416099 , EP1887145 , JP63268823 or JP9112792 . They are characterized by retention tanks, stacked head to tail two by two, which have the shape of a parallelepiped with an open face and the opposite face carrying columns which provide the support of the upper tray layer.

Afin de soutenir des poids importants, la partie centrale de ces bacs est munie d'un nombre important de colonnes, ce qui, d'une part, nuit à la capacité d'eau que le bac est susceptible de contenir et, d'autre part, nécessite une quantité importante de matière pour réaliser le bac. Comme tous ces bacs sont réalisés par moulage, leur coût de revient, une fois que le moule est amorti, est fortement dépendant de la quantité de matière qui le constitue; la réduction du volume de matière constitue donc un avantage concurrentiel qui peut s'avérer décisif.In order to support heavy weights, the central part of these bins is provided with a large number of columns, which, on the one hand, impairs the water capacity that the tank is likely to contain and, on the other hand, on the other hand, requires a large amount of material to make the tray. As all these tanks are made by molding, their cost, once the mold is damped, is highly dependent on the amount of material that constitutes it; reducing the volume of material is therefore a competitive advantage that can be decisive.

La présente invention a pour but d'améliorer les systèmes existants en proposant un bac de rétention d'eau qui permette de soutenir des charges importantes (pouvant aller jusqu'à 450 Kilo Newtons par m2 contre 30 à 40 Kilo Newtons par m2 pour certains bacs de l'art antérieur), tout en minimisant la quantité de matière qui est nécessaire pour le produire.The present invention aims to improve existing systems by providing a water retention tank that can support large loads (up to 450 Kilo Newtons per m 2 against 30 to 40 Kilo Newtons per m 2 for some trays of the prior art), while minimizing the amount of material that is needed to produce it.

A cet effet, l'invention a pour objet un bac de rétention d'eau selon la revendication 1.For this purpose, the invention relates to a water retention tank according to claim 1.

Grâce à ces caractéristiques, deux bacs identiques peuvent être empilés dans une position pivotée à 180° l'une de l'autre, avec les plateformes de support inférieures d'un bac coopérant avec les plateformes de support supérieures du bac d'en dessous. Les parois de liaison reprennent les efforts de compression entre plateformes de support. Elles peuvent être dimensionnées pour présenter un rapport intéressant entre les efforts de compression et de flambement admissibles et la quantité de matière nécessaire.Thanks to these features, two identical trays can be stacked in a position rotated 180 ° from each other, with the support platforms bottom of a tray cooperating with the upper support platforms of the tray from below. The connecting walls take up the compression efforts between support platforms. They can be dimensioned to present an interesting ratio between the compressive forces and allowable buckling and the amount of material required.

Une telle forme des parois de liaison offre une bonne résistance à la compression et au flambement, sans nécessiter une quantité de matière importante.Such a shape of the connecting walls provides good resistance to compression and buckling, without requiring a large amount of material.

Selon l'invention la portion intérieure et la portion extérieure sont inclinées afin de permettre un emboîtement du bac avec un bac identique. Dans ce cas, un ensemble de bacs identiques peut être stocké et transporté en occupant un espace limité.According to the invention the inner portion and the outer portion are inclined to allow a nesting of the tray with an identical tray. In this case, a set of identical bins can be stored and transported occupying a limited space.

Selon un mode de réalisation particulier, les portions intérieures et/ou les portions extérieures de deux parois de liaison adjacentes délimitent une encoche en forme de V pour le passage de l'eau.According to a particular embodiment, the inner portions and / or the outer portions of two adjacent connecting walls delimit a V-shaped notch for the passage of water.

De préférence, le bac comprend quatre piliers d'angle aux coins de la paroi de fond, chaque pilier d'angle présentant une plateforme inférieure plus étendue le long d'un côté de la paroi de fond que d'un autre afin de correspondre à l'alignement des plateformes de support inférieures des parois latérales.Preferably, the tray comprises four corner pillars at the corners of the bottom wall, each corner pillar having a wider lower platform along one side of the bottom wall than another to correspond to the alignment of the lower support platforms of the side walls.

Selon un mode de réalisation particulier, le bac comprend, au niveau d'une plateforme de support supérieure, un trou et, au niveau d'une plateforme de support inférieure correspondante, un plot. Cela permet un centrage des bacs empilés.According to a particular embodiment, the tray comprises, at an upper support platform, a hole and, at a corresponding lower support platform, a pad. This allows centering stacked bins.

Avantageusement, le bac comprend un cerclage qui entoure les parois latérales au niveau des plateformes de support inférieures.Advantageously, the tray comprises a strapping which surrounds the side walls at the lower support platforms.

De préférence, la portion extérieure s'étend entre un côté extérieur d'une plateforme de support supérieure et le cerclage.Preferably, the outer portion extends between an outer side of an upper support platform and the strapping.

Selon un mode de réalisation particulier, le cerclage présente, le long de deux côtés adjacents, au moins une attache mâle et, le long des deux autres côtés, au moins une attache femelle. Avantageusement, l'attache mâle comprend une languette de section en forme de T dépassant du cerclage, et l'attache femelle comprend une rainure de réception.According to a particular embodiment, the strapping has, along two adjacent sides, at least one male fastener and, along the other two sides, at least one female fastener. Advantageously, the male fastener comprises a tongue of T-shaped section protruding from the strapping, and the female fastener comprises a receiving groove.

Une telle languette peut être réalisée sans dépasser loin au-delà du cerclage, et sans constituer une forme contondante, tout en pouvant coopérer avec la rainure d'un bac adjacent. Les risques d'endommagement de la languette par choc, et les risques d'endommagement des membranes par poinçonnement sont donc limités.Such a tongue can be made without exceeding far beyond the strapping, and without constituting a blunt shape, while being able to cooperate with the groove of an adjacent tray. The risk of damaging the tongue by impact, and the risk of damaging the membranes by punching are therefore limited.

Pour augmenter la résistance à la compression des bacs, la paroi de fond comporte un certain nombre de colonnes creuses, se prolongeant dans le même sens que les parois de liaison, vers la face ouverte du bac, et de longueur suffisante pour venir coopérer avec la paroi de fond du bac immédiatement inférieur lors de leur empilement. Contrairement aux bacs de l'art antérieur, ces colonnes sont en nombre réduit afin de ne pas pénaliser la contenance en eau du système, et afin d'optimiser le rapport entre la résistance mécanique et la quantité de matière utiliséeTo increase the compressive strength of the tanks, the bottom wall comprises a number of hollow columns, extending in the same direction as the connecting walls, towards the open face of the tray, and of sufficient length to cooperate with the Bottom wall of the tray immediately below when stacking. Unlike the tanks of the prior art, these columns are reduced in number so as not to penalize the water capacity of the system, and to optimize the ratio between the mechanical strength and the amount of material used.

Selon un mode de réalisation particulier, et selon le même principe de symétrie des parois de liaison explicité plus haut, ces colonnes sont disposées en quinconces, afin de permettre, dans une certaine position, l'encastrement des bacs les uns dans les autres en un volume réduit propice au transport et au stockage, et dans l'autre position, par pivotement à 180° dans le plan de la paroi de fond, la superposition des bacs les uns au dessus des autres en un volume déployé correspondant à la position de service.According to a particular embodiment, and according to the same principle of symmetry of the connecting walls explained above, these columns are arranged in quincunxes, to allow, in a certain position, the embedding of the bins into each other in one reduced volume suitable for transport and storage, and in the other position, by pivoting at 180 ° in the plane of the bottom wall, the superposition of the bins one above the other in an expanded volume corresponding to the service position .

Par ailleurs, la disposition des colonnes, en particulier leur espacement, permet de préserver un volume intérieur suffisamment grand, exempt d'obstacles, susceptible de recevoir un(des) accessoire(s), tel(s) que par exemple un drain, ou un conduit de visite, ou un conduit d'hydrocurage. Pour cela, selon un mode de réalisation particulier, le volume intérieur libre présente la possibilité d'intégrer un(des) accessoire(s) d'allure générale cylindrique ou en « U » inversé, de section suffisante pour les interventions classiques d'inspection par caméra téléguidéee et de nettoyage par hydrocurage. Cet(ces) accessoire(s) se trouve(nt) alors calé(s) latéralement par les colonnes, à l'intérieur des bacs, et peut(peuvent) se prolonger à travers plusieurs bacs consécutifs selon une disposition rectiligne favorable tant à la fonction visée qu'à la facilité d'installation. Le fait de pouvoir disposer cet(ces) accessoire(s) en un seul segment rectiligne à travers la structure permet sans aucune complication d'installation de le pourvoir au préalable d'un habillage de type géotextile, ou autre tissus perméable faisant office de filtre apte à retenir tout élément solide de taille suffisante à l'intérieur dudit(desdits) accessoire(s). L'eau traversant le média filtrant vers la cavité de rétention sera ainsi filtrée. Le confinement des impuretés à l'intérieur dudit(desdits) accessoire(s) est propice aux interventions de maintenance dont il est fait mention plus haut.Moreover, the arrangement of the columns, in particular their spacing, makes it possible to preserve a sufficiently large interior volume, free of obstacles, capable of receiving an accessory (s), such as for example a drain, or a conduit, or a conduit of hydrocurage. For this, according to a particular embodiment, the free internal volume has the possibility of integrating accessory (s) of general cylindrical or inverted "U" shape, of sufficient section for conventional inspection procedures by remote control camera and cleaning by hydrocuring. This (these) accessory (s) is (are) then wedged (s) laterally by the columns, inside the bins, and can (may) extend through several consecutive trays in a rectilinear arrangement favorable both to the function referred to as ease of installation. The fact of being able to arrange this (these) accessory (s) in a single rectilinear segment through the structure makes it possible without any installation complication to provide it beforehand with a geotextile type covering, or other permeable fabric acting as a filter adapted to retain any solid element of sufficient size inside said (said) accessory (s). The water passing through the filter medium to the retention cavity will thus be filtered. Containment of impurities inside said accessory (s) is conducive to maintenance interventions mentioned above.

Pour correspondre à cette option d'installation, que l'on nommera « visitable » ou « hydrocurable », les parois des bacs peuvent être localement échancrées afin de laisser traverser les éléments tubulaires de part en part. Cette modification présente l'avantage d'autoriser la pose séquentielle des plateaux en fond de fouille, puis des accessoires tubulaires de longueur indifférente, puis des bacs. Cette séquence est nettement avantageuse en termes de facilité de pose et de gain de temps, comparée à l'art antérieur, qui nécessite l'introduction latérale des accessoires tubulaires à travers les bacs après leur mise en place dans la cavité de rétention. Elle est encore plus avantageuse dans le cas de l'implantation d'un accessoire tubulaire muni d'un média filtrant sur sa face extérieure.To match this installation option, which will be called "visitable" or "hydrocurable", the walls of the bins can be locally indented to let through the tubular elements from side to side. This modification has the advantage of allowing the sequential placement of trays bottom excavation, then tubular accessories of indifferent length, then bins. This sequence is clearly advantageous in terms of ease of installation and time saving, compared to the prior art, which requires the lateral introduction of the tubular accessories through the tanks after their introduction into the retention cavity. It is even more advantageous in the case of the implantation of a tubular accessory provided with a filter medium on its outer face.

Le maillage de nervures croisées qui constitue le fond du bac comporte, en deux endroits symétriques par rapport aux axes géométriques du fond, des mailles dont l'espacement est sensiblement plus large que l'ensemble des mailles environnantes. Ces dimensions particulières de mailles, ainsi que leur localisation, ont été choisies pour permettre à l'utilisateur de saisir le bac en glissant ses doigts, éventuellement protégés par des gants, à l'intérieur des mailles, et de manipuler le bac à deux mains, espacées d'environ une largeur d'épaules. Grâce à cette configuration, l'utilisateur peut manipuler sans aide extérieure la charge naturellement équilibrée, dans de bonnes conditions ergonomiques. Pour rendre la manipulation encore plus confortable, la nervure servant de prise présente une section arrondie dans la zone de préhension.The mesh of crossed ribs which constitutes the bottom of the tray comprises, in two symmetrical locations with respect to the geometric axes of the bottom, meshes whose spacing is substantially wider than the set of surrounding meshes. These particular mesh sizes, and their location, were chosen to allow the user to grasp the tray by sliding his fingers, possibly protected by gloves, inside the mesh, and manipulate the two-handed tray , spaced about one shoulder width apart. Thanks to this configuration, the user can manipulate without load the load naturally balanced, in good ergonomic conditions. To make the handling even more comfortable, the gripping rib has a rounded section in the gripping area.

Afin de conférer à la première couche de bacs, au fond de la cavité, la même résistance mécanique qu'aux couches supérieures de l'ouvrage, il est nécessaire d'offrir auxdits bacs les mêmes conditions d'appui et de calage qu'aux couches supérieures. Selon un mode de réalisation particulier, ces fonctions d'appui et de calage initiales sont obtenues par l'emploi de plateaux d'allure générale plane, aptes à s'emboîter sous la face inférieure des bacs, à raison d'un plateau par bac, s'interposant par conséquent entre la (les) membrane(s) du fond de la cavité et les plateformes de support inférieures des bacs. Ces plateaux présentent une aire totale d'appui nettement supérieure à la somme des aires des surfaces d'appui inférieures des bacs, et sont par conséquent aptes à réduire le risque d'endommagement par poinçonnement de la (des) membrane(s).In order to confer on the first layer of tanks, at the bottom of the cavity, the same mechanical strength as in the upper layers of the structure, it is necessary to offer the said tanks the same conditions of support and rigging as upper layers. According to a particular embodiment, these initial support and stalling functions are obtained by the use of generally flat trays, able to fit under the underside of the trays, at the rate of one tray per tray , therefore interposed between the (the) membrane (s) of the bottom of the cavity and the lower support platforms bins. These plates have a total bearing area much greater than the sum of the areas of the lower bearing surfaces of the tanks, and are therefore able to reduce the risk of punching damage to the membrane (s).

Selon un mode de réalisation particulier, le plateau comprend au moins une plateforme de support supérieure périphérique, qui coopère avec la pluralité de plateformes de support inférieures du bac. Le format rectangulaire du plateau offre des dimensions légèrement inférieures aux dimensions du cerclage des parois latérales du bac, ce qui permet d'encastrer le plateau à l'intérieur du cerclage, réalisant en cela un centrage d'une pièce par rapport à l'autre. La plateforme de support supérieure périphérique du plateau offre, par analogie avec les plateformes de support supérieures des bacs, des trous aptes à coopérer avec les plots des plateformes de support inférieures des bacs. Ces encastrements complémentaires ont pour fonction d'empêcher les parois de liaison des bacs de glisser vers l'extérieur du rectangle de sustentation sous les efforts combinés de compression et de flambement, subis en situation de service. Dans cette position d'assemblage, les colonnes des bacs sont en appui sur la surface des plateaux, afin de transmettre la charge au sol.According to a particular embodiment, the plate comprises at least one peripheral upper support platform, which cooperates with the plurality of lower support platforms of the tray. The rectangular format of the tray has dimensions slightly smaller than the dimensions of the strapping of the side walls of the tray, which allows to embed the tray inside the strapping, thereby achieving a centering of one piece relative to the other . The platform of upper peripheral support of the plate offers, by analogy with the upper support platforms bins, holes adapted to cooperate with the pads of the lower support platforms bins. These complementary recesses have the function of preventing the connecting walls of the bins from sliding outwardly of the support rectangle under the combined efforts of compression and buckling, suffered in service situation. In this assembly position, the columns of the bins are supported on the surface of the trays, in order to transmit the load to the ground.

Pour faciliter la constitution de la première couche de l'ouvrage, le plateau peut avantageusement être fixé au bac en position finale d'assemblage avant sa mise en place définitive au fond de la cavité de rétention. La manipulation des bacs de la première couche, et de leur plateau associé se fait par conséquent en simultané, résultant en une plus grande facilité de positionnement et un gain de temps. Selon un mode de réalisation particulier, la fixation des plateaux sous les bacs se fait par accrochage de type « clips », au niveau de l'extrémité des colonnes des bacs munies à cet effet d'un trou correspondant.To facilitate the constitution of the first layer of the structure, the plate can advantageously be fixed to the container in final assembly position before its final placement in the bottom of the retention cavity. The handling of the trays of the first layer, and their associated tray is therefore simultaneous, resulting in greater ease of positioning and a gain of time. According to a particular embodiment, the fixing of the trays under the trays is done by hooking type "clips" at the end of the columns of the bins provided for this purpose with a corresponding hole.

L'invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative détaillée qui va suivre, d'un mode de réalisation de l'invention donné à titre d'exemple purement illustratif et non limitatif, en référence aux dessins schématiques annexés.The invention will be better understood, and other objects, details, features and advantages thereof will appear more clearly in the following detailed explanatory description of an embodiment of the invention given as a purely illustrative and non-limiting example, with reference to the accompanying schematic drawings.

Sur ces dessins :

  • la figure 1 est une vue en perspective de deux bacs de rétention d'eau selon un mode de réalisation de l'invention, emboîtés l'un dans l'autre en position pour leur transport ou leur stockage ;
  • la figure 2 est une vue en perspective des deux bacs de la figure 1, positionnés l'un sur l'autre pour la réalisation d'un tampon de rétention d'eau ;
  • la figure 3 est une vue de dessus d'un des bacs de la figure 2;
  • la figure 4 est une vue de détail, de dessous, des bacs de la figure 2, empilés l'un sur l'autre ;
  • la figure 5 est une vue partielle de dessous du bac de la figure 3 ;
  • la figure 6 est une vue en perspective d'un plateau de soutien de bac, selon un mode de réalisation de l'invention
  • la figure 7 est une vue de dessus d'un dispositif d'accrochage permettant d'accrocher les deux bacs de la figure 1 quand ils sont disposés côte à côte,
  • la figure 8 est une vue en perspective d'un raccord fixé sur la paroi latérale du bac de la figure 3,
  • la figure 9 est une vue en perspective de dessus de plusieurs bacs de la figure 2 formant la face supérieure d'un tampon hydraulique.
  • La figure 10 est une vue en perspective de plusieurs bacs, installés selon l'option « visitable » ou « hydrocurable », avec l'accessoire correspondant.
On these drawings:
  • the figure 1 is a perspective view of two water retention tanks according to one embodiment of the invention, nested one in the other in position for their transport or storage;
  • the figure 2 is a perspective view of the two bins of the figure 1 positioned one on the other for producing a water retention pad;
  • the figure 3 is a top view of one of the bins of the figure 2 ;
  • the figure 4 is a detail view, from below, of the bins of the figure 2 stacked one on the other;
  • the figure 5 is a partial view from below the ferry of the figure 3 ;
  • the figure 6 is a perspective view of a tray support tray, according to an embodiment of the invention
  • the figure 7 is a top view of an attachment device for hanging the two bins of the figure 1 when they are arranged side by side,
  • the figure 8 is a perspective view of a connector attached to the side wall of the tank of the figure 3 ,
  • the figure 9 is a perspective view from above of several bins of the figure 2 forming the upper face of a hydraulic buffer.
  • The figure 10 is a perspective view of several bins, installed according to the option "visitable" or "hydrocurable", with the corresponding accessory.

En se référant aux figures 1 et 2, on voit un ensemble de deux bacs 1 identiques ; ils sont emboîtés l'un dans l'autre sur la figure 1 et retournés puis empilés l'un sur l'autre sur la figure 2. Afin de pouvoir les empiler l'un sur l'autre, comme on les voit sur la figure 2, on fait exécuter au bac supérieur une rotation, dans un plan horizontal, de 180° par rapport au bac inférieur. Les points d'appui sur chacun de ces bacs sont disposés pour que, avant ce retournement de 180° ils soient dans une position où l'emboîtement est possible et qu'après ce retournement ce soit l'empilement qui le devienne.Referring to Figures 1 and 2 we see a set of two identical containers 1; they are nested one inside the other on the figure 1 and returned and stacked on top of each other on the figure 2 . In order to be able to stack them on top of each other, as we see them on the figure 2 the upper tray is rotated in a horizontal plane by 180 ° with respect to the lower tray. The points of support on each of these bins are arranged so that, before this turnaround of 180 ° they are in a position where the nesting is possible and that after this turnaround is the stack that becomes it.

Les bacs 1 ont une forme sensiblement parallélépipédique, comprenant une paroi de fond 2, conventionnellement désignée comme la partie supérieure du bac (du fait de sa position lorsque les bacs sont empilés comme sur la figure 2), qui a la forme d'une grille constituée par un ensemble de courtes parois verticales entrecroisées. Ils présentent également des parois latérales 3 formées par une succession de piliers 4 en forme de V et de V inversés, qui se succèdent alternativement. Cette forme en V est définie de façon à permettre l'emboîtage des bacs l'un dans l'autre pour le stockage ou le transport. De façon à assurer des points d'appui pour l'emboîtage ou l'empilement des bacs ces V et ces V inversés sont tronqués près de leur extrémité pointue, de façon à faire apparaître des plateformes de support inférieures 8 planes du côté de la face ouverte et des plateformes de support supérieures 9 planes du côté de la paroi de fond 2. Les parois latérales 3 se présentent ainsi sous la forme d'un ruban d'une largeur donnée, se déroulant le long des V et des V inversés ainsi que de leurs plateformes de support. La largeur du ruban est déterminée en fonction de la charge que le bac 1 est supposé soutenir.The tanks 1 have a substantially parallelepipedal shape, comprising a bottom wall 2, conventionally designated as the upper part of the tank (because of its position when the tanks are stacked as on the figure 2 ), which has the form of a grid consisting of a set of short intersecting vertical walls. They also have side walls 3 formed by a succession of pillars 4 V-shaped and inverted V, which alternate alternately. This V shape is defined to allow nesting boxes in one another for storage or transport. In order to ensure points of support for the nesting or stacking of the tanks these V and these inverted V are truncated near their pointed end, so as to reveal lower support platforms 8 planes on the side of the face and the upper support platforms 9 planes on the side of the bottom wall 2. The side walls 3 are thus in the form of a ribbon of a given width, taking place along the V and inverted V and of their support platforms. The width of the ribbon is determined according to the load that the tray 1 is supposed to support.

La structure des parois latérales 3 est décrite plus en détail en références aux figures 3 et 7. Comme expliqué précédemment, une paroi latérale 3 comprend une pluralité de plateformes de support supérieures 9 agencées périodiquement le long d'un côté de la paroi de fond 2. Les plateformes de support inférieures 8 sont agencées en alternance par rapport aux plateformes de support supérieures 9, à distance de la paroi de fond 2. Comme on peut le voir sur la figure 3, les plateformes de support supérieures 9 d'une paroi latérale 3 sont disposées dans des positions images des plateformes de support inférieures 8 de la paroi latérale 3 opposée par rapport à l'axe géométrique passant par le centre du fond du bac et perpendiculaire au fond du bac. Ainsi, un pivotement d'un bac de 180° par rapport à cet axe met les plateformes inférieures 8 d'un bac au droit des plateformes supérieures 9 d'un bac placé en dessous. Cela permet un empilement de plusieurs bacs 1 identiques comme représenté sur la figure 2.The structure of the side walls 3 is described in more detail with reference to figures 3 and 7 . As explained above, a side wall 3 comprises a plurality of upper support platforms 9 periodically arranged along one side of the bottom wall 2. The lower support platforms 8 are arranged alternately with respect to the upper support platforms 9 , away from the bottom wall 2. As can be seen on the figure 3 , the upper support platforms 9 of a side wall 3 are arranged in image positions of the lower support platforms 8 of the side wall 3 opposite to the geometric axis passing through the center of the bottom of the tank and perpendicular to the bottom of the tank. Thus, a pivoting of a tray 180 ° relative to this axis puts the lower platforms 8 of a tray to the right of the upper platforms 9 of a tray placed underneath. This allows a stack of several identical trays 1 as shown in FIG. figure 2 .

Chaque paroi latérale 3 comprend en outre une pluralité de parois de liaison 30 reliant les plateformes de support supérieures 9 aux plateformes de support inférieures 8 en reprenant les efforts de compression. Comme le montre la figure 7, une plateforme de support supérieure 9 est reliée aux deux plateformes de support inférieures 8 adjacentes respectivement par deux parois de liaison 30 symétriques. Une paroi de liaison 30 comprend une portion intérieure 32, située du côté de l'intérieur du bac 1, une portion d'épaisseur 31, agencée dans l'épaisseur de la paroi latérale 3, et une portion extérieure 33, située du côté de l'extérieur du bac 1. La portion intérieure 32 s'étend entre le côté de la paroi de fond 2 et un côté intérieur 36 d'une plateforme de support inférieure 8. La portion d'épaisseur 31 s'étend entre un côté d'épaisseur 38 d'une plateforme de support supérieure 9 et un côté d'épaisseur 39 d'une plateforme de support inférieure 8 adjacent. Enfin, la portion extérieure 33 s'étend entre un côté extérieur 37 d'une paroi de support supérieure 9 et un cerclage 10 qui sera décrit ci-dessous.Each side wall 3 further comprises a plurality of connecting walls 30 connecting the upper support platforms 9 to the lower support platforms 8 by taking up the compression forces. As shown in figure 7 , an upper support platform 9 is connected to the two lower support platforms 8 adjacent respectively by two symmetrical connecting walls 30. A connecting wall 30 comprises an inner portion 32, located on the inner side of the tray 1, a portion of thickness 31, arranged in the thickness of the side wall 3, and an outer portion 33, located on the side of the the outside of the tray 1. The inner portion 32 extends between the side of the bottom wall 2 and an inner side 36 of a lower support platform 8. The thickness portion 31 extends between a side d thickness 38 of an upper support platform 9 and a thickness side 39 of an adjacent lower support platform 8. Finally, the outer portion 33 extends between an outer side 37 of an upper support wall 9 and a strapping 10 which will be described below.

La portion intérieure 32, la portion d'épaisseur 31 et la portion extérieure 33 des parois de liaison 30 sont inclinées de manière à former les piliers 4 qui, comme dit précédemment, sont tronconiques afin de permettre un emboîtement de plusieurs bacs 1 identiques comme sur la figure 1.The inner portion 32, the thickness portion 31 and the outer portion 33 of the connecting walls 30 are inclined so as to form the pillars 4 which, as said above, are frustoconical to allow interlocking of several identical tanks 1 as on the figure 1 .

Comme on peut le voir sur la figure 7, les portions intérieures 32 de deux parois de liaison 30 adjacentes délimitent une encoche 34 en forme de V pour le passage de l'eau. Similairement, les portions extérieures 33 de deux parois de liaison 30 adjacentes délimitent une encoche 35 également en forme de V pour le passage de l'eau.As can be seen on the figure 7 , the inner portions 32 of two adjacent connecting walls 30 delimit a notch 34 V-shaped for the passage of water. Similarly, the outer portions 33 of two adjacent connecting walls 30 delimit a notch 35 also V-shaped for the passage of water.

Les parois latérales 3 se rejoignent aux quatre angles et sont rattachées les unes aux autres par des piliers d'angle 5. Les faces supérieures et inférieures de ces piliers d'angle 5 sont agencées, de façon connue, de manière à permettre l'emboîtement des bacs 1 comme illustré sur la figure 1, et leur empilement comme illustré sur la figure 2 après le pivotement à 180° d'un bac sur deux. Comme on peut le voir sur la figure 3, les faces inférieures 40 des différents piliers d'angle 5 sont plus ou moins étendues le long des côtés du bac 1 afin d'introduire le décalage susmentionné entre les plateformes de support de côtés opposés.The side walls 3 meet at the four corners and are connected to each other by corner pillars 5. The upper and lower faces of these corner pillars 5 are arranged, in known manner, to allow interlocking bins 1 as illustrated on the figure 1 , and stacking them as illustrated on the figure 2 after 180 ° pivoting of every other bin. As can be seen on the figure 3 , the lower faces 40 of the different Angle pillars 5 are more or less extended along the sides of the tray 1 to introduce the aforementioned offset between the support platforms of opposite sides.

A l'intérieur du volume central du parallélépipède, on voit des colonnes 6 qui s'étendent du fond 2 en direction de la face ouverte, et qui se terminent par un pied de colonne 7 sous la forme d'un épaulement inférieur plan, qui est parallèle au fond 2 et situé approximativement à la même hauteur que les plateformes inférieures 8 des piliers 4 des parois latérales 3 et que celles des piliers d'angle 5.Inside the central volume of the parallelepiped, we see columns 6 which extend from the bottom 2 in the direction of the open face, and which terminate in a foot of column 7 in the form of a plane lower shoulder, which is parallel to the bottom 2 and located approximately at the same height as the lower platforms 8 of the pillars 4 of the side walls 3 and those of the corner pillars 5.

Les parties inférieures des parois latérales 3 sont enserrées, et tenues les unes aux autres, par un cerclage 10, qui assure la cohésion des piliers 4 et des piliers d'angle 5, et garantit ainsi l'absence d'un grand écart des parois latérales 3 lorsque le bac 1 repose sur sa partie ouverte et que des charges importantes sont appliquées dessus.The lower parts of the side walls 3 are gripped, and held together, by a strapping 10, which ensures the cohesion of the pillars 4 and corner pillars 5, and thus ensures the absence of a large gap walls 3 when the tray 1 rests on its open part and that heavy loads are applied on it.

En référence à la figure 3 on voit un bac 1 dans la position de la figure 2, en vue de dessus, avec les piliers 4 des parois latérales et les piliers d'angle 5 ainsi que les colonnes 6 qui ont une forme de cône pour permettre leur emboîtage. Le fond du pied 7 de colonne est percé de trous pour permettre l'écoulement de l'eau et éviter que la colonne ne constitue un réceptacle où l'eau stagnerait. Sur le fond 2 du bac, à côté du haut des colonnes 6, sont positionnés des supports 11 pour les pieds 7 de colonnes du bac du dessus. Lors de l'empilement des bacs 1, chaque pied de colonne se positionne à l'intérieur d'un support 11 porté par le fond du bac de dessous, de façon à être retenu en translation dans les deux sens du plan horizontal. Chaque support 11 de pied de colonne est disposé sur le fond 2 à une position qui correspond à l'image du pied d'une colonne 6 par rapport à l'axe de pivotement du bac 1. On remarquera que pour permettre l'entrée du pied 7 de colonne dans le support 11, les colonnes 6 ont une longueur légèrement supérieure à celle des piliers 4 des parois latérales 3 ou à celle des piliers d'angle 5. De même, comme on peut le voir sur la figure 4, au niveau des supports 11 les parois des grilles formant le fond 2 ont des longueurs légèrement raccourcies pour permettre la rentrée des pieds 7 de colonnes dans les supports 11 correspondants.With reference to the figure 3 we see a ferry 1 in the position of the figure 2 , in top view, with the pillars 4 of the side walls and the corner pillars 5 and the columns 6 which have a cone shape to allow their casing. The bottom of the column foot 7 is pierced with holes to allow the flow of water and prevent the column is a receptacle where the water would stagnate. On the bottom 2 of the tray, next to the top of the columns 6, are positioned supports 11 for the feet 7 of columns of the tray above. During the stacking of the bins 1, each column foot is positioned inside a support 11 carried by the bottom of the bottom tray, so as to be retained in translation in both directions of the horizontal plane. Each support 11 at the bottom of the column is placed on the bottom 2 at a position corresponding to the image of the foot of a column 6 with respect to the axis of pivoting of the tray 1. It will be noted that to allow the entry of the column 7 in the support 11, the columns 6 have a length slightly greater than that of the pillars 4 of the side walls 3 or that of the corner pillars 5. Similarly, as can be seen on the figure 4 at the supports 11 the walls of the grids forming the bottom 2 have slightly shortened lengths to allow the entry of the legs 7 of columns in the corresponding supports 11.

On distingue également sur la figure 3 les poignées de préhension 45 incorporées aux fonds 2 des bacs 1. Ces poignées, au nombre de deux par bac, sont réparties de sorte à équilibrer naturellement la charge, pour une manipulation aisée par un seul opérateur. Leur forme arrondie et leurs dimensions permettent une préhension confortable.We also distinguish on the figure 3 the gripping handles 45 incorporated in the funds 2 of the bins 1. These handles, two in number per tray, are distributed so as to balance the load naturally, for handling easy by a single operator. Their rounded shape and their dimensions allow a comfortable grip.

En référence à la figure 5, dans le but de trouver un bon centrage d'un bac 1 sur celui qui le soutient, mais aussi dans le but d'empêcher qu'une des parois latérales 3 ne se courbe latéralement sous le poids qu'elle supporte, des pions de centrage 12 sont positionnés sur certaines plateformes inférieures 8 de chaque paroi latérale 3, et parallèlement des trous 13 sont pratiqués dans les plateformes supérieures 9 qui sont à des emplacements correspondant aux plateformes inférieures 8 qu'elles soutiendront après le pivotement de 180°.With reference to the figure 5 , in order to find a good centering of a tray 1 on the one that supports it, but also in order to prevent one of the side walls 3 does not bend laterally under the weight that it supports, pawns of centering 12 are positioned on some lower platforms 8 of each side wall 3, and parallel holes 13 are formed in the upper platforms 9 which are at locations corresponding to the lower platforms 8 they will support after the pivoting 180 °.

En référence à la figure 6 on voit un plateau 14 destiné à être placé en fond de fouille et à servir de soutènement aux bacs 1 placés les plus bas dans la fouille. On retrouve sur ce plateau 14 l'ensemble des éléments figurant sur les bacs 1 qui permettent l'empilement d'un bac identique immédiatement au dessus, c'est-à-dire un entourage de soutien 15 qui remplit la même fonction que la série des plateformes supérieures 9, des trous 16 dans lesquels viennent se positionner les plots 12 des bacs de l'étage inférieur et des supports de colonnes 17 qui jouent le rôle des supports 11 des bacs 1. A la différence des supports 11 des bacs 1, ces supports de colonnes 17 sont pleins et sont chacun porteur d'un clip 18 qui peut passer à travers les trous des pieds de colonne des bacs de fond de fouille. La présence de ce clip 18 permet si les plateaux 14 sont mis en fond de fouille préalablement, de bien centrer les bacs 1 les uns par rapport aux autres, et dans le cas contraire de solidariser les bacs avec les plateaux avant leur mise en place et donc de les manipuler plus facilement. De par cette possibilité de manipulation simultanée des plateaux 14 et des bacs 1 , assemblés pour la première couche au plus bas de la fouille, il n'est pas nécessaire de munir les plateaux 14 des mêmes poignées de manutention 45 que celles intégrées aux fonds 2 des bacs 1.With reference to the figure 6 we see a plate 14 to be placed at the bottom of the excavation and to support the tanks 1 placed lowest in the search. Found on this plate 14 all the items on the bins 1 which allow the stacking of an identical tray immediately above, that is to say, a support entourage 15 which performs the same function as the series upper platforms 9, holes 16 in which are positioned the pads 12 of the bins of the lower stage and the column supports 17 which play the role of the supports 11 of the bins 1. Unlike the supports 11 of the bins 1, these columns supports 17 are full and are each carrying a clip 18 which can pass through the holes of the bottom of the bottom bins excavation tanks. The presence of this clip 18 allows if the trays 14 are placed at the bottom of the excavation beforehand, to center the bins 1 relative to each other, and otherwise to secure the bins with the trays before their introduction and so to handle them more easily. Because of this possibility of simultaneous manipulation of the trays 14 and the tanks 1, assembled for the first layer at the bottom of the excavation, it is not necessary to equip the trays 14 with the same handling handles 45 as those integrated in the bottoms 2 bins 1.

En se référant à la figure 7 on voit un dispositif d'accrochage de deux bacs 1 positionnés côte à côte, comme ils le sont pour constituer un tampon de stockage de l'eau. Sur le bord latéral du cerclage 10 sont positionnés sur deux côtés adjacents deux attaches mâles 19 en forme de T, et sur les deux autres côtés adjacents des attaches femelles 20 en forme de rainures. Comme on peut le voir sur la figure 7 les attaches mâles 19 peuvent coopérer avec les attaches femelles pour empêcher tout déplacement latéral d'un bac 1 par rapport au bac auquel il est relié. La disposition de deux attaches mâles sur deux côtés adjacents et de deux attaches femelles sur les deux autres côtés adjacents permet un assemblage des bacs sur une même couche suivant une séquence indifférenciée, c'est-à-dire que le déploiement des bacs peut s'effectuer en assemblant d'abord les petits côtés pour former une ligne de grande longueur ou bien d'abord les grands côtés pour former une ligne de grande largeur. Il est également possible de progresser en parallèle le long des petits côtés et des grands côtés, ce qui donne toute la flexibilité nécessaire pour la réalisation du chantier. Il n'est ainsi pas nécessaire d'attendre que toute la fouille soit réalisée pour débuter l'assemblage des bacs, tant horizontalement que verticalement.Referring to the figure 7 we see an attachment device of two tanks 1 positioned side by side, as they are to form a water storage buffer. On the side edge of the strapping 10 are positioned on two adjacent sides two T-shaped male fasteners 19, and on the other two adjacent sides of the groove-like female fasteners 20. As can be seen on the figure 7 the male fasteners 19 can cooperate with the female fasteners to prevent any lateral displacement of a tray 1 relative to the tray to which it is connected. The arrangement of two male fasteners on two adjacent sides and two female fasteners on the other two adjacent sides allows an assembly of the bins on the same layer in an undifferentiated sequence, that is to say that the deployment of the bins can s' do this by first assembling the short sides to form a long line or first the long sides to form a wide line. It is also possible to progress in parallel along the short sides and long sides, which gives all the flexibility necessary for the construction site. It is not necessary to wait until the entire search is done to begin the assembly of the bins, both horizontally and vertically.

Sur la figure 8, on voit un raccord 41 fixé sur la paroi latérale 3 d'un bac 1. Le raccord 41 permet de relier le tampon hydraulique à un conduit pour l'alimentation du bassin, la vidange ou le débit de fuite du bassin ou la création d'un évent ou d'un trop plein. Le raccord 41 comprend un manchon de liaison permettant la liaison au conduit et des moyens de fixation sur la paroi latérale 3 d'un bac 1. Par exemple, il peut s'agir d'un moyen coopérant avec les encoches 35 précitées et avec le cerclage 10, afin de fixer le raccord 41 par clipsage. Ce mode d'accrochage permet avantageusement de disposer le raccord 41 indifféremment à l'une ou l'autre des parois 3 des bacs 1, aux unes ou aux autres des encoches 35 en combinaison avec le cerclage 10, à n'importe quel niveau de l'empilement, sans aucune préparation préalable des bacs 1. Cette particularité procure une grande modularité de l'implantation des conduits d'alimentation et de fuite du bassin. Le raccord 41 présente une surface annulaire 42 plane permettant, avec une bride non représentée, la fixation de la géomembrane au raccord 41 de manière étanche.On the figure 8 , there is seen a connection 41 fixed on the side wall 3 of a tank 1. The connection 41 makes it possible to connect the hydraulic buffer to a conduit for the supply of the basin, the emptying or the leakage flow of the basin or the creation of a vent or overflow. The connector 41 comprises a connecting sleeve for connecting to the conduit and fixing means on the side wall 3 of a container 1. For example, it may be a means cooperating with the notches 35 mentioned above and with the strapping 10, in order to fix the connection 41 by clipping. This mode of attachment advantageously makes it possible to arrange the coupling 41 indifferently to one or the other of the walls 3 of the tanks 1, to one or the other of the notches 35 in combination with the strapping 10, at any level of Stacking, without any prior preparation of the bins 1. This feature provides a high degree of modularity of the implantation of the supply and leakage ducts of the basin. The connector 41 has a planar annular surface 42 allowing, with a not shown flange, the fixing of the geomembrane to the connection 41 in a sealed manner.

La figure 9 est une vue en perspective de dessus de plusieurs bacs 1 formant la face supérieure d'un tampon hydraulique. On peut y voir plusieurs connecteurs 43 munis d'excroisances perpendiculaires (non représentées) reliant deux ou quatre bacs 1 adjacents. Les connecteurs 43 offrent une surface d'appui à la géomembrane, pour éviter qu'elle ne se perce sous le poids du terrain qui la pousse dans les espaces entre les bacs 1. La figure 3 montre que les bacs 1 présentent, au niveau de leur paroi de fond 2, des oeillets 44 permettant la fixation des connecteurs 43, par exemple par clipsage.The figure 9 is a perspective view from above of several tanks 1 forming the upper face of a hydraulic buffer. There can be seen several connectors 43 provided with perpendicular excrescences (not shown) connecting two or four adjacent tanks 1. The connectors 43 provide a support surface for the geomembrane, to prevent it from piercing under the weight of the ground that pushes it into the spaces between the bins 1. The figure 3 shows that the bins 1 have, at their bottom wall 2, eyelets 44 for fixing the connectors 43, for example by clipping.

La figure 10 présente plusieurs bacs 1 juxtaposés en situation de service, offrant l'option « visitable » ou « hydrocurable ». Les parois latérales 3 des petits côtés des bacs 1 sont échancrées par usinage de sorte à permettre la traversée de part en part des bacs 1 par un accessoire tubulaire 46 constituant un drain, ou un canal de visite pour l'inspection par caméra téléguidée, ou un canal d'hydrocurage. Cet accessoire tubulaire 46 peut être de longueur indifférente, et peut être posé en fond de fouille en un seul ou en plusieurs segments, sur les plateaux 14, puis recouvert par les bacs 1 en conservant sa rectitude.The figure 10 has several juxtaposed 1 bins in service situation, offering the option "visitable" or "hydrocurable". The side walls 3 of the short sides of the tanks 1 are notched by machining so as to allow the crossing of the tanks 1 through a tubular accessory 46 constituting a drain, or a visit channel for inspection by remote-controlled camera, or a canal of hydrocuring. This tubular accessory 46 may be of indifferent length, and may be placed at the bottom of the excavation in one or more segments, on the trays 14, then covered by the trays 1 while maintaining its straightness.

Bien que l'invention ait été décrite en relation avec un mode de réalisation particulier, il est bien évident qu'elle n'y est nullement limitée et qu'elle comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci entrent dans le cadre de l'invention.Although the invention has been described in connection with a particular embodiment, it is obvious that it is not limited thereto and that it comprises all the technical equivalents of the means described and their combinations if they are within the scope of the invention.

Claims (16)

  1. Water holding tank (1) designed to constitute, by assembly of tanks, a water holding device that is buried in the ground, whereby said tank comprises an approximately rectangular bottom wall (2) and four side walls (3) that are connected respectively to the sides of the bottom wall, wherein each side wall comprises:
    - a plurality of upper support platforms (9) that are arranged periodically along one side of the bottom wall,
    - a plurality of lower support platforms (8) that are arranged alternatingly relative to the upper support platforms at a distance from the bottom wall, and
    - a plurality of connecting walls (30), whereby each connecting wall connects an upper support platform to a lower support platform while leaving open a passage for water,
    wherein the upper support platforms of a side wall are arranged in mirror positions of the lower support platforms of the opposite side wall relative to a 180° rotation, around an axis that is perpendicular to the bottom wall, and vice versa,
    wherein each connecting wall comprises a thickness portion (31) that connects a thickness side (38) of an upper support platform (9) to a thickness side (39) of a lower support platform (8),
    and wherein each connecting wall also comprises an inside portion (32) that connects the side of the bottom wall (2) to an inner side (36) of a lower support platform (8), and an outside portion (33) that extends from an outer side (37) of an upper support platform (9), characterized in that
    the inside portion and the outside portion are inclined so as to allow an interlocking arrangement of the tank (1) with an identical tank.
  2. Tank according to claim 1, wherein the inside portions and/or the outsize portions of the two adjacent connecting walls delimit a V-shaped slot (34, 35) for the passage of water.
  3. Tank according to any one of claim 1 or 2, comprising four angular columns (5) at the corners of the bottom wall, wherein each annular column has a lower platform (40) that is more extended along one side of the bottom wall than the pother, in order to correspond to the alignment of the lower support platforms (8) of the side walls.
  4. Tank according to any one of claims I to 3, comprising a hole (13) at an upper support platform (9), and a stud (12) at a corresponding lower support platform (8).
  5. Tank according to any one of claims 1 to 4, comprising an inclosure (10) that surrounds the side walls (3) at the lower support platforms (8).
  6. Tank according to claim 5, wherein the outside portion (33) extends between an outer side (37) of an upper support platform (9) and the enclosure (10).
  7. Tank according to claim 5 or 6, wherein the enclosure has, along two adjacent sides, at least one male attachment (19) and, along the two other sides, at least one female attachment (20).
  8. Tank according to claim 7, wherein the male attachment comprises a tab with a T-shaped section that projects beyond the enclosure, and the female attachment comprises a receiving groove.
  9. Tank according to any one of the preceding claims, wherein the bottom wall has a plurality of hollow columns that extend in the same direction as the side walls up to an open surface of the tank.
  10. Tank according to claim 9, comprising a plate (14) that is arranged at the open surface of the thank, wherein the plate comprises, on the side turned toward the bottom wall, a peripheral support platform (15) that cooperates with said lower support platforms and attachment means (18) that cooperate with the end of the columns to attach the plate, and, on a side turned opposite the bottom wall, a support surface which area is greater than the total area of said lower support platform.
  11. Tank according to claim 9 or 10, wherein two opposite side walls are cambered, leaving open a linear passage through the tank, wherein said columns are arranged at a distance from one another outside of said linear passage.
  12. Tank according to claim 11, comprising an accessory (46) that is arranged in said linear passage.
  13. Tank according to claim 12, comprising an accessory (46) that is equipped on its outside surface with a filtering jacket.
  14. Tank according to any one of claims 1 to 13, comprising a connection (41) that is attached to one of said side walls, wherein the connection has a connecting sleeve that is designed to be connected to a pipe, and a flat annular surface (42) that is configured to establish a sealed connection with a membrane.
  15. Tank according to any one of claims 1 to 14, wherein the bottom wall has eyelets (44) that are configured for the attachment of connectors.
  16. Assembly of Tanks according to claim 15, arranged next to each other, comprising at least one connector (43) that is fixed to the bottom walls (2) of two or four adjacent tanks using said eyelets (44), wherein said convector has, on the level of the space that is located between the adjacent tanks, a support surface that is configured to cooperate with a membrane.
EP09305277A 2008-04-02 2009-04-01 Water retention box Not-in-force EP2107172B1 (en)

Priority Applications (1)

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PL09305277T PL2107172T3 (en) 2008-04-02 2009-04-01 Water retention box

Applications Claiming Priority (1)

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FR0801833A FR2929630B1 (en) 2008-04-02 2008-04-02 WATER RETENTION BIN FOR CONSTITUTING BY ASSEMBLY OF BINS A DEVICE FOR RETENTION OF WATER BURIED IN THE SOIL

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EP2107172A1 EP2107172A1 (en) 2009-10-07
EP2107172B1 true EP2107172B1 (en) 2013-03-13

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CA (1) CA2659554C (en)
ES (1) ES2405806T3 (en)
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RU2009111517A (en) 2010-10-10
CA2659554A1 (en) 2009-10-02
PL2107172T3 (en) 2013-08-30
CA2659554C (en) 2014-05-20
US8292117B2 (en) 2012-10-23
US20090250369A1 (en) 2009-10-08
ES2405806T3 (en) 2013-06-03
EP2107172A1 (en) 2009-10-07
RU2495199C2 (en) 2013-10-10
FR2929630A1 (en) 2009-10-09
FR2929630B1 (en) 2011-11-25

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