EP2110495A1 - Device allowing the formation of a reservation when building concrete walls - Google Patents

Device allowing the formation of a reservation when building concrete walls Download PDF

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Publication number
EP2110495A1
EP2110495A1 EP09158028A EP09158028A EP2110495A1 EP 2110495 A1 EP2110495 A1 EP 2110495A1 EP 09158028 A EP09158028 A EP 09158028A EP 09158028 A EP09158028 A EP 09158028A EP 2110495 A1 EP2110495 A1 EP 2110495A1
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EP
European Patent Office
Prior art keywords
devices
concrete
reservation
formwork
fixed part
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EP09158028A
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German (de)
French (fr)
Inventor
Pierre Michiels
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Plakabeton SA
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Plakabeton SA
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Application filed by Plakabeton SA filed Critical Plakabeton SA
Priority to EP09158028A priority Critical patent/EP2110495A1/en
Publication of EP2110495A1 publication Critical patent/EP2110495A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • E04G15/063—Re-usable forms
    • E04G15/068—Re-usable forms for channels open towards the surface
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/365—Stop-end shutterings

Definitions

  • the present invention relates to the field of construction and in particular to the realization of junctions between concrete vertical parts such as facade walls and horizontal concrete parts such as slabs.
  • the present invention relates to the formation of a reservation during the realization of this junction.
  • thermo bridge Devices to reduce heat loss have been proposed and generally consist in ensuring the continuity of thermal insulation by the interposition of an element called “thermal breaker” in the form of an insulating element and which ensures the continuity of the interior insulation with only a few ad hoc anchors, thus preserving the stability of the structure.
  • the traditional solution consists first of all to realize the veil of vertical frontage by stopping it at the lower level of the slab, then to place the thermal breaker in its place, to form the edge of the slab and to realize the slab of the side of the breaker, and finally to realize the end of sail to the upper level of the slab. It is then possible to remove the edge of the slab and make the last part of the facade of the upper floor and this by starting the entire process on each floor. It is observed that the fact of placing a thermal breaker requires the realization of the façade veil in several phases with successive concreting stops, which of course requires not only the use of small quantities of concrete but also an increased labor force. and therefore longer run times and additional costs.
  • the document FR-2644823 describes a system that partially offers a solution to the problems identified above. It is a device and a process for obtaining peripheral rest of the slabs and slabs of reinforced concrete. The rest is obtained by the installation of several adjacent blocks on a horizontal surface secured to the formwork. This system makes it possible to obtain a reservation serving as slab rest, with a single step of pouring concrete.
  • the system presented in the document FR-2644823 does not use thermal breakers as described above. The use of these thermal breakers requires in fact to provide a sufficient depth of the reservation to place the reinforcements of the breakers that will be embedded in the concrete on the side of the veil. Using the system of FR-2644823 , the space between the blocks and the formwork would become too narrow to ensure efficient casting of the concrete.
  • the present invention aims to provide a solution that allows concreting in a single phase while allowing to have a thermal breaker.
  • the present invention also aims to ensure easy concreting, neat and which does not require having to work in the precipitation.
  • the present invention also aims to provide an elegant system that does not increase production costs or the ability of laying workers.
  • the present invention relates to a device and a method as described in the claims.
  • the present invention relates to a device in the form of a longitudinal box allowing the formation, in a vertical concrete veil, of a continuous horizontal reservation intended to support a horizontal slab during the production of concrete structures, characterized in that the device comprises at least one movable portion sliding in the longitudinal direction in a fixed part, for increasing the volume of the box by deployment or extension.
  • the device is in the form of a parallelepiped box.
  • Other longitudinal shapes, such as cylindrical boxes, could also be used.
  • this box comprises at each of the lateral ends of the fixed part a sliding part.
  • each of the sliding parts has a length corresponding to half the length of the fixed part of the box so as to double the initial volume when extending or deploying the sliding parts out of the fixed part. It is obvious that said length of the sliding parts must not correspond mathematically to half the length of the fixed part. Said length of the sliding parts thus corresponds to about half the length of the fixed part, so as to practically double said volume.
  • At least a portion of one of the preferably longitudinal faces of the box is not completely closed so as to allow the placement of fastening means of said box to the formwork elements on which it will become solid.
  • the fixed portion is formed by a parallelepipedal space open at the lateral ends and preferably open on one of the longitudinal faces, while the sliding parts are designed as a drawer, preferably without bottom.
  • handles will be arranged on the sliding parts.
  • the material for producing the sliding portion is plastic, wood and / or metal.
  • the material for making the fixed part may be plastic or other synthetic material (eg resin), wood and / or metal.
  • the dimensions of the box and in particular the lateral width is between 3/4 and 1/2 and preferably close to 2/3 of the total width available in a formwork element.
  • the devices are arranged along the length of the web such that two successive devices come into contact with each other when the adjacent sliding parts have been slid or slid.
  • the present invention is particularly useful for the formation of a reservation for the installation of a thermal breaker at the junction of the facade / slab.
  • the present invention relates to a method wherein, to fill the formwork up flush with the lower level of said devices, the concrete is poured into at least one space between two non-extended or non-deployed devices.
  • the present invention relates to the use of a device as described above for the formation of this reservation for the installation of a thermal breaker at the junction facade veil / slab.
  • the figure 1 schematically describes the problem of the junction between a vertical part and a horizontal part which allows the installation of a thermal breaker.
  • the figures 2 describe schematically the device according to the present invention in the sliding position (deployed).
  • the figures 3 describe the constituent elements of the device according to the present invention being in the form of a longitudinal parallelepiped box and which allows the formation of a reservation during the realization of this junction.
  • the figure 4 describes a fastening means of the device according to the invention, used against the face of a formwork of the facade wall.
  • FIGS. 5a-5c , 6a-6b and 7a-7b describe the principle of laying the device according to the present invention according to a method of forming a reservation during the realization of this junction.
  • the present invention relates first of all to a device in the form of a longitudinal parallelepipedic box allowing the formation of a reservation during the production of concrete structures, characterized in that comprises at least one sliding part in the longitudinal direction in a fixed part, making it possible to increase the volume of the box.
  • the figure 1 describes the problem that arises when producing concrete structures that requires the junction between a horizontally disposed slab and a frontage or facade veil disposed vertically.
  • the vertical veil of the facade being continuous, it can not have an interior insulation over the entire height, this interior insulation being interrupted to the right of the slab, and this over the entire length of the vertical facade and likewise on any the periphery of the building.
  • thermal breaker a device has been proposed called "thermal breaker" which allows to recreate the continuity of the inner insulation.
  • the façade veil (1) is made by stopping it at the lower level (2) of the upper slab (5). Then, we put the thermal breaker (3) and we lock the edge of the slab (4) so as to realize the slab on one side (5) of the breaker and the end of the sail on the other side (6) until at the upper level (7) of the slab. Thus, it is possible to remove the edge of the slab and make the façade veil to the upper floor. This can be repeated on each floor. It is observed that this way of working requires successive concreting stops at the lower level (2) and the upper level (7).
  • the present invention is simply to propose to realize an outer formwork of the facade veil to the upper level (7) directly in a single phase, creating a reservation having a suitable depth to serve as a support for the slab, provided with thermal breakers .
  • the figure 2 schematically shows in section a device in the form of a longitudinal parallelepipedal box 15 and which consists essentially of two parts: a fixed part (12) and a movable portion (13).
  • two moving parts are present at each end of the fixed part.
  • the dimensions of the fixed and movable parts are calculated so that the movable part or parts slide or slide easily in the fixed part.
  • the fixed and mobile parts are represented in Figures 3a and 3b with their respective ratings (12,13).
  • the figure 3c shows a perspective view of the device.
  • the fixed part 12 is essentially an element having three faces and constituting a longitudinal parallelepiped whose lateral parts are open, thus allowing the placement of a sliding element 13 (moving part) being essentially in the form a drawer, that is to say a parallelepipedic box whose at least one side face 16 is closed or closed.
  • handles (14) can be arranged on each of the moving parts.
  • each movable part will preferably be of the order of half of the fixed part, so that in the folded (undeployed) position, each of the two moving parts can easily integrate with the fixed part and that In the extended or deployed position, the planned volume is practically doubled.
  • At least one of the longitudinal faces of the parallelepiped of both the fixed part and the sliding part is free or open, so as to allow the placement of fastening elements and in particular magnetic fastening elements (in the case metal forms).
  • These fasteners are designed so as to allow the attachment of the device to the formwork.
  • magnets that have a shape as represented in figure 4 .
  • These magnets 17 are installed inside the fixed part 12 of the box 15. Their shape is adapted to the dimensions of this fixed part.
  • These magnets are provided with flexible elements such as springs 18, which push the magnet against the face of the formwork 20.
  • the folded portions 19 of the fixed part 12 serve as support for the magnets.
  • the Figures 5a-5c represent the different steps for laying said box.
  • said caissons 15 are placed on the internal part of the formwork 20 of the veil by means of suitable elements, and this at the level of the placement of the horizontal part of the slab ( Fig. 5a ).
  • the vertical concrete formwork is filled in, preferably by pouring the concrete into at least one of the spaces between two non-extended or non-deployed caissons, up to the level of the lower level 21 of said sliding device ( Fig. 5b ).
  • the moving parts 13 of said device are slid or slid so that the moving parts of two adjacent devices come into contact, so as to form a single volume.
  • the said concreting phase is completed by filling the free space 22 present between the formwork 20 and the various devices 15 which are arranged in the extended or extended part of the formwork ( Fig. 5c ) and after drying, simply remove the successive devices, creating a reservation.
  • the Figures 6a-6b show a sectional view of the placement of the device 15 vis-à-vis the veil 1.
  • the figure 6b shows the result after removing the device, thereby creating the reservation 10.
  • the slab 5 is cast which rests on the reservation 10, thermal switches 3 being put in place, and finally we end by pouring the next part of the vertical veil 1.
  • the Figures 7a and 7b represent several devices arranged next to each other.
  • the figure 7a is a plurality of devices arranged with an interval which, when the moving parts in drawer form are deployed or extended, come into contact with each other. In fact, the "left" part of a first device comes into contact with the "right” part of the adjacent device. As represented in figure 7b it is thus possible to create a continuous reservation (10) which extends essentially over the entire width of the web.
  • the size and in particular the width of the sliding device will be chosen so as to make a reservation 10 between 3/4 and 1/2 of the width , thus leaving a sail portion 22 between 1/4 and 1/2 of the total width at the reservation.
  • the width of the sliding device is of the order of 2/3 of the width of the web, that is to say between 12 and 13 cm.
  • the length of the fixed part of the sliding device can be several meters.
  • the main advantage of the device of the invention and the method of use is observed especially when the width of the portion 22 must be minimal, because of the length of the reinforcements forming part of the thermal breakers.
  • a maximum length of the reinforcement portion 23 embedded in the concrete side of the veil will ensure the stability of the slab.
  • the device of the invention thus makes it possible to cast the concrete rapidly and efficiently in two phases: firstly between the non-extended or non-deployed devices, and then (after expansion or deployment) between the extended or deployed devices and the formwork (thus filling the narrow space 22). Because of the large dimensions of the free spaces between the non-extended or non-deployed devices, the first phase is carried out very quickly and makes it possible to obtain an optimal quality of concrete. By using static devices (which can not be deployed or extended), one would have to pour all the concrete through the narrow space 22, which would be inadequate in terms of efficiency and would have repercussions on the quality of the concrete. dried veil.
  • the various fixed and moving parts of the device must not be made of the same material. They can be made of metal, plastic or other synthetic material such as resins, or even wood. This will depend mainly on local construction habits.

Abstract

The device has a movable part (13) sliding in longitudinal direction in a fixed part (12) to increase volume of a parallelepiped longitudinal box (15) by deployment or extension. The movable part has length equal to half of length of the fixed part of the box. A handle (14) is placed on the movable part to facilitate sliding of the movable part inside the fixed part. Material used for realization of the movable and fixed parts is made of plastic, wood and/or metal. An independent claim is also included for a method for formation of reservation during construction of a concrete wall of a building.

Description

Objet de l'inventionObject of the invention

La présente invention se rapporte au domaine de la construction et en particulier à celui de la réalisation des jonctions entre des parties verticales bétonnées telles que des voiles de façade et des parties bétonnées horizontales telles que des dalles.The present invention relates to the field of construction and in particular to the realization of junctions between concrete vertical parts such as facade walls and horizontal concrete parts such as slabs.

Plus particulièrement, la présente invention se rapporte à la formation d'une réservation lors de la réalisation de cette jonction.More particularly, the present invention relates to the formation of a reservation during the realization of this junction.

Etat de la techniqueState of the art

La problématique liée aux jonctions, due à la réalisation de voiles de façade avec isolation par l'intérieur avec des dalles horizontales, est bien connue. En effet, les structures étant continues, l'isolation intérieure est interrompue au droit de la dalle et ceci sur toute la périphérie du bâtiment. Cela pose évidemment un problème important de déperdition calorique et génère souvent la présence de condensation à l'intérieur du bâtiment. Ce phénomène bien connu dans le monde de la construction est généralement dénommé « pont thermique ». Des dispositifs destinés à réduire les déperditions caloriques ont été proposés et consistent en général à assurer la continuité de l'isolation thermique par l'interposition d'un élément appelé « rupteur thermique » se présentant sous la forme d'un élément isolant et qui permet d'assurer la continuité de l'isolation intérieure avec seulement quelques ancrages ponctuels, permettant ainsi de conserver la stabilité de l'ouvrage.The issue of junctions, due to the realization of facade walls with insulation from the inside with horizontal slabs, is well known. Indeed, the structures being continuous, the inner insulation is interrupted to the right of the slab and this on the entire periphery of the building. This obviously poses a significant problem of heat loss and often generates the presence of condensation inside the building. This phenomenon well known in the world of construction is generally referred to as "thermal bridge". Devices to reduce heat loss have been proposed and generally consist in ensuring the continuity of thermal insulation by the interposition of an element called "thermal breaker" in the form of an insulating element and which ensures the continuity of the interior insulation with only a few ad hoc anchors, thus preserving the stability of the structure.

Afin de poser ce rupteur thermique, il est pour l'instant obligatoire d'interrompre les phases de bétonnage. En effet, ainsi que représenté à la figure 1, la solution traditionnelle consiste tout d'abord à réaliser le voile de façade vertical en l'arrêtant au niveau inférieur de la dalle, ensuite à placer le rupteur thermique à sa place, à coffrer le bord de la dalle et à réaliser la dalle du côté du rupteur, et enfin à réaliser le bout de voile jusqu'au niveau supérieur de la dalle. Il est alors possible de décoffrer le bord de la dalle et de réaliser la dernière partie du voile de façade de l'étage supérieur et ceci en recommençant le processus complet à chaque étage. On observe que le fait de placer un rupteur thermique impose de réaliser le voile de façade en plusieurs phases avec des arrêts de bétonnage successifs, ce qui bien sûr requiert non seulement l'utilisation de petites quantités de béton mais aussi une main d'oeuvre accrue et donc des temps d'exécution plus longs et des coûts supplémentaires.In order to install this thermal breaker, it is for the moment obligatory to interrupt the concreting phases. Indeed, as represented in figure 1 , the traditional solution consists first of all to realize the veil of vertical frontage by stopping it at the lower level of the slab, then to place the thermal breaker in its place, to form the edge of the slab and to realize the slab of the side of the breaker, and finally to realize the end of sail to the upper level of the slab. It is then possible to remove the edge of the slab and make the last part of the facade of the upper floor and this by starting the entire process on each floor. It is observed that the fact of placing a thermal breaker requires the realization of the façade veil in several phases with successive concreting stops, which of course requires not only the use of small quantities of concrete but also an increased labor force. and therefore longer run times and additional costs.

Le document FR-2644823 décrit un système qui propose partiellement une solution aux problèmes identifiés ci-dessus. Il s'agit d'un dispositif et d'un procédé d'obtention de repos périphériques des dalles et prédalles en béton armé. Le repos est obtenu par l'installation de plusieurs blocs adjacents sur une surface horizontale solidaire du coffrage. Ce système permet d'obtenir une réservation servant de repos de dalles, avec une seule étape de coulée de béton. Toutefois, le système présenté dans le document FR-2644823 n'utilise pas de rupteurs thermiques tels que décrits ci-dessus. L'usage de ces rupteurs thermiques nécessite en effet de prévoir une profondeur suffisante de la réservation pour placer les armatures des rupteurs qui seront noyées dans le béton du côté du voile. En utilisant le système de FR-2644823 , l'espace entre les blocs et le coffrage deviendrait trop étroit pour assurer une coulée efficace du béton.The document FR-2644823 describes a system that partially offers a solution to the problems identified above. It is a device and a process for obtaining peripheral rest of the slabs and slabs of reinforced concrete. The rest is obtained by the installation of several adjacent blocks on a horizontal surface secured to the formwork. This system makes it possible to obtain a reservation serving as slab rest, with a single step of pouring concrete. However, the system presented in the document FR-2644823 does not use thermal breakers as described above. The use of these thermal breakers requires in fact to provide a sufficient depth of the reservation to place the reinforcements of the breakers that will be embedded in the concrete on the side of the veil. Using the system of FR-2644823 , the space between the blocks and the formwork would become too narrow to ensure efficient casting of the concrete.

Buts de l'inventionGoals of the invention

La présente invention vise à proposer une solution qui permette de réaliser le bétonnage en une seule phase tout en permettant de disposer d'un rupteur thermique.The present invention aims to provide a solution that allows concreting in a single phase while allowing to have a thermal breaker.

La présente invention vise aussi à garantir un bétonnage aisé, soigné et qui ne nécessite pas de devoir travailler dans la précipitation.The present invention also aims to ensure easy concreting, neat and which does not require having to work in the precipitation.

La présente invention vise également à proposer un système élégant qui n'augmente pas les coûts de production ou l'habilité de pose des ouvriers.The present invention also aims to provide an elegant system that does not increase production costs or the ability of laying workers.

Principaux éléments caractéristiquesMain characteristic elements

La présente invention se rapporte à un dispositif et à un procédé tels que décrits dans les revendications.The present invention relates to a device and a method as described in the claims.

La présente invention se rapporte à un dispositif se présentant sous la forme d'un caisson longitudinal permettant la formation, dans un voile vertical en béton, d'une réservation horizontale continue destinée à supporter une dalle horizontale lors de la réalisation de structures en béton, caractérisé en ce que le dispositif comprend au moins une partie mobile coulissant dans le sens longitudinal dans une partie fixe, permettant d'augmenter le volume du caisson par déploiement ou extension. De préférence, le dispositif se présente sous la forme d'un caisson parallélépipédique. D'autres formes longitudinales, tels que des caissons cylindriques, pourraient être aussi utilisées.The present invention relates to a device in the form of a longitudinal box allowing the formation, in a vertical concrete veil, of a continuous horizontal reservation intended to support a horizontal slab during the production of concrete structures, characterized in that the device comprises at least one movable portion sliding in the longitudinal direction in a fixed part, for increasing the volume of the box by deployment or extension. Preferably, the device is in the form of a parallelepiped box. Other longitudinal shapes, such as cylindrical boxes, could also be used.

De préférence, ce caisson comprend à chacune des extrémités latérales de la partie fixe une partie coulissante.Preferably, this box comprises at each of the lateral ends of the fixed part a sliding part.

De préférence, chacune des parties coulissantes présente une longueur correspondant à la moitié de la longueur de la partie fixe du caisson de manière à doubler le volume initial lorsque l'on étend ou déploie les parties coulissantes hors de la partie fixe. Il est évident que ladite longueur des parties coulissantes ne doit pas correspondre de façon mathématique à la moitié de la longueur de la partie fixe. Ladite longueur des parties coulissantes correspond donc environ à la moitié de la longueur de la partie fixe, de manière à pratiquement doubler ledit volume.Preferably, each of the sliding parts has a length corresponding to half the length of the fixed part of the box so as to double the initial volume when extending or deploying the sliding parts out of the fixed part. It is obvious that said length of the sliding parts must not correspond mathematically to half the length of the fixed part. Said length of the sliding parts thus corresponds to about half the length of the fixed part, so as to practically double said volume.

De préférence, au moins une partie d'une des faces de préférence longitudinales du caisson n'est pas complètement obturée de manière à permettre le placement de moyens de fixation dudit caisson aux éléments de coffrage sur lequel il va se solidariser.Preferably, at least a portion of one of the preferably longitudinal faces of the box is not completely closed so as to allow the placement of fastening means of said box to the formwork elements on which it will become solid.

De préférence, la partie fixe est réalisée par un espace parallélépipédique ouvert aux extrémités latérales et de préférence ouvert sur une des faces longitudinales, tandis que les parties coulissantes sont réalisées sous forme de tiroir, de préférence sans fond.Preferably, the fixed portion is formed by a parallelepipedal space open at the lateral ends and preferably open on one of the longitudinal faces, while the sliding parts are designed as a drawer, preferably without bottom.

Selon une forme avantageuse, des poignées seront disposées sur les parties coulissantes.In an advantageous form, handles will be arranged on the sliding parts.

De préférence, le matériau permettant la réalisation de la partie coulissante est du plastique, du bois et/ou du métal. De même, le matériau permettant la réalisation de la partie fixe peut être en plastique ou autre matière synthétique (p.ex. résine), en bois et/ou en métal.Preferably, the material for producing the sliding portion is plastic, wood and / or metal. Similarly, the material for making the fixed part may be plastic or other synthetic material (eg resin), wood and / or metal.

De préférence, les dimensions du caisson et en particulier la largeur latérale est comprise entre 3/4 et 1/2 et de préférence proche de 2/3 de la largeur totale disponible dans un élément de coffrage.Preferably, the dimensions of the box and in particular the lateral width is between 3/4 and 1/2 and preferably close to 2/3 of the total width available in a formwork element.

De préférence, les dispositifs sont disposés sur la longueur du voile de telle manière à ce que deux dispositifs successifs entrent en contact les uns avec les autres lorsque l'on a fait coulisser ou glisser les parties coulissantes adjacentes.Preferably, the devices are arranged along the length of the web such that two successive devices come into contact with each other when the adjacent sliding parts have been slid or slid.

La présente invention est particulièrement utile pour la formation d'une réservation destinée à la pose d'un rupteur thermique au niveau de la jonction voile de façade/dalle.The present invention is particularly useful for the formation of a reservation for the installation of a thermal breaker at the junction of the facade / slab.

La présente invention se rapporte également à un procédé de formation d'une réservation dans une partie verticale se présentant sous la forme d'un voile de façade en béton, ladite réservation étant destinée à supporter une partie horizontale se présentant sous la forme d'une dalle dans une structure en béton, dans lequel :

  • on place le coffrage pour la réalisation de la partie verticale sous forme de voile,
  • on dispose au sein dudit coffrage à hauteur du placement de la partie horizontale une pluralité de dispositifs, lesdits dispositifs étant en position non étendue ou non déployée,
  • on comble le coffrage vertical de béton jusqu'à affleurer le niveau inférieur desdits dispositifs,
  • on fait coulisser les parties coulissantes de sorte que plusieurs dispositifs successifs entrent en contact les uns avec les autres,
  • on termine ladite phase de bétonnage en comblant l'espace libre présent entre lesdits dispositifs et le coffrage,
  • après séchage, on retire lesdits dispositifs, réalisant ainsi une réservation.
The present invention also relates to a method of forming a reservation in a vertical portion in the form of a concrete facade web, said reservation being intended to support a horizontal portion in the form of a slab in a concrete structure, in which:
  • the formwork is placed for the realization of the vertical part in the form of a sail,
  • disposed within said formwork at the placement height of the horizontal portion a plurality of devices, said devices being in the extended position or not deployed,
  • the vertical concrete formwork is filled up to flush with the lower level of said devices,
  • the sliding parts are slid so that several successive devices come into contact with each other,
  • said concreting phase is completed by filling the free space present between said devices and the formwork,
  • after drying, said devices are removed, thus making a reservation.

Plus particulièrement, la présente invention se rapporte à un procédé dans lequel, pour combler le coffrage jusqu'à affleurer le niveau inférieur desdits dispositifs, on coule le béton dans au moins un espace se trouvant entre deux dispositifs non-étendus ou non-déployés.More particularly, the present invention relates to a method wherein, to fill the formwork up flush with the lower level of said devices, the concrete is poured into at least one space between two non-extended or non-deployed devices.

Enfin, la présente invention se rapporte à l'utilisation d'un dispositif tel que décrit ci-dessus pour la formation de cette réservation destinée à la pose d'un rupteur thermique au niveau de la jonction voile de façade/dalle.Finally, the present invention relates to the use of a device as described above for the formation of this reservation for the installation of a thermal breaker at the junction facade veil / slab.

Brève description des figuresBrief description of the figures

La présente invention sera décrite en détail à l'aide des figures qui suivent.The present invention will be described in detail with the aid of the following figures.

La figure 1 décrit de manière schématique la problématique de la jonction entre une partie verticale et une partie horizontale qui permet la pose d'un rupteur thermique.The figure 1 schematically describes the problem of the junction between a vertical part and a horizontal part which allows the installation of a thermal breaker.

Les figures 2 décrivent de manière schématique le dispositif selon la présente invention en position coulissée (déployée).The figures 2 describe schematically the device according to the present invention in the sliding position (deployed).

Les figures 3 décrivent les éléments constitutifs du dispositif selon la présente invention se présentant sous la forme d'un caisson parallélépipédique longitudinal et qui permet la formation d'une réservation lors de la réalisation de cette jonction.The figures 3 describe the constituent elements of the device according to the present invention being in the form of a longitudinal parallelepiped box and which allows the formation of a reservation during the realization of this junction.

La figure 4 décrit un moyen de fixation du dispositif selon l'invention, utilisé contre la face d'un coffrage du voile de façade.The figure 4 describes a fastening means of the device according to the invention, used against the face of a formwork of the facade wall.

Les figures 5a-5c, 6a-6b et 7a-7b décrivent le principe de pose du dispositif selon la présente invention selon un procédé de formation d'une réservation lors de la réalisation de cette jonction.The Figures 5a-5c , 6a-6b and 7a-7b describe the principle of laying the device according to the present invention according to a method of forming a reservation during the realization of this junction.

Description détaillée d'une forme d'exécution préférée de l'inventionDetailed description of a preferred embodiment of the invention

Selon une forme particulière, la présente invention se rapporte tout d'abord à un dispositif se présentant sous la forme d'un caisson parallélépipédique longitudinal permettant la formation d'une réservation lors de la réalisation de structures en béton, caractérisé en ce qu'il comprend au moins une partie coulissante dans le sens longitudinal dans une partie fixe, permettant d'augmenter le volume du caisson.According to a particular form, the present invention relates first of all to a device in the form of a longitudinal parallelepipedic box allowing the formation of a reservation during the production of concrete structures, characterized in that comprises at least one sliding part in the longitudinal direction in a fixed part, making it possible to increase the volume of the box.

La présente invention vise également à proposer un procédé de réalisation d'une jonction entre une partie verticale se présentant sous la forme d'un voile de façade en béton et une partie horizontale se présentant sous la forme d'une dalle dans une structure en béton dans lequel :

  • on place le coffrage pour la réalisation de la partie verticale sous forme de voile,
  • on dispose au sein dudit coffrage à hauteur du placement de la partie horizontale au moins un dispositif tel que décrit ci-dessus, ce dispositif étant en position non-étendue ou non-déployée,
  • on comble le coffrage vertical de béton jusqu'à affleurer ledit dispositif coulissant,
  • on fait coulisser ou glisser la ou les parties coulissantes,
  • on termine ladite phase de bétonnage en comblant l'espace libre présent entre ledit dispositif coulissant et le coffrage,
  • après séchage, on retire ledit dispositif, réalisant ainsi une réservation.
The present invention also aims to propose a method of making a junction between a vertical portion in the form of a concrete facade and a horizontal portion in the form of a slab in a concrete structure in which :
  • the formwork is placed for the realization of the vertical part in the form of a sail,
  • within said formwork, at least one device as described above is disposed at the height of the horizontal part, this device being in the non-extended or non-deployed position,
  • the vertical concrete form is filled up to flush with said sliding device,
  • the sliding part (s) are slid or slid,
  • said concreting phase is completed by filling the free space present between said sliding device and the formwork,
  • after drying, said device is removed, thus making a reservation.

La figure 1 décrit la problématique qui se pose lors de la réalisation d'ouvrages en béton qui nécessite la jonction entre une dalle disposée horizontalement et une façade ou un voile de façade disposé de manière verticale. En effet, le voile vertical de la façade étant continu, on ne peut disposer une isolation intérieure sur toute la hauteur, cette isolation intérieure étant interrompue au droit de la dalle, et ce sur toute la longueur de la façade verticale et de même sur toute la périphérie du bâtiment. De manière classique, il s'ensuit une déperdition calorique et la présence de condensation à l'intérieur du bâtiment. Dans ce but, on a proposé un dispositif appelé « rupteur thermique » qui permet de recréer la continuité de l'isolation intérieure.The figure 1 describes the problem that arises when producing concrete structures that requires the junction between a horizontally disposed slab and a frontage or facade veil disposed vertically. Indeed, the vertical veil of the facade being continuous, it can not have an interior insulation over the entire height, this interior insulation being interrupted to the right of the slab, and this over the entire length of the vertical facade and likewise on any the periphery of the building. Conventionally, it follows a caloric loss and the presence of condensation inside the building. For this purpose, a device has been proposed called "thermal breaker" which allows to recreate the continuity of the inner insulation.

Actuellement, ainsi que représenté à la figure 1, on réalise le voile de façade (1) en l'arrêtant au niveau inférieur (2) de la dalle haute (5). Ensuite, on place le rupteur thermique (3) et on coffre le bord de la dalle (4) de manière à réaliser la dalle d'un côté (5) du rupteur et le bout de voile de l'autre côté (6) jusqu'au niveau supérieur (7) de la dalle. Ainsi, il est possible de décoffrer le bord de la dalle et de réaliser le voile de façade jusqu'à l'étage supérieur. Ceci peut être recommencé à chaque étage. On observe que cette manière de travailler nécessite des arrêts de bétonnage successifs au niveau inférieur (2) et au niveau supérieur (7).Currently, as well as represented at the figure 1 the façade veil (1) is made by stopping it at the lower level (2) of the upper slab (5). Then, we put the thermal breaker (3) and we lock the edge of the slab (4) so as to realize the slab on one side (5) of the breaker and the end of the sail on the other side (6) until at the upper level (7) of the slab. Thus, it is possible to remove the edge of the slab and make the façade veil to the upper floor. This can be repeated on each floor. It is observed that this way of working requires successive concreting stops at the lower level (2) and the upper level (7).

La présente invention vise simplement à proposer de réaliser un coffrage extérieur du voile de façade jusqu'au niveau supérieur (7) directement en une seule phase, en créant une réservation ayant une profondeur adéquate pour servir de support à la dalle, pourvue de rupteurs thermiques.The present invention is simply to propose to realize an outer formwork of the facade veil to the upper level (7) directly in a single phase, creating a reservation having a suitable depth to serve as a support for the slab, provided with thermal breakers .

La figure 2 représente de manière schématique en coupe un dispositif se présentant sous la forme d'un caisson parallélépipédique longitudinal 15 et qui est constitué essentiellement de deux parties : une partie fixe (12) et une partie mobile (13). Avantageusement, deux parties mobiles sont présentes à chaque extrémité de la partie fixe. Les dimensions des parties fixe et mobiles sont calculées de manière à ce que la ou les parties mobiles coulissent ou glissent aisément dans la partie fixe. A titre d'exemple, les parties fixe et mobiles sont représentées aux figures 3a et 3b avec leurs cotes (12,13) respectives. La figure 3c montre une vue en perspective du dispositif. Pour la partie fixe 12, il s'agit essentiellement d'un élément présentant trois faces et constituant un parallélépipède longitudinal dont les parties latérales sont ouvertes, permettant ainsi le placement d'un élément coulissant 13 (partie mobile) se présentant essentiellement sous la forme d'un tiroir, c'est-à-dire d'un caisson parallélépipédique dont au moins une face latérale 16 est fermée ou obturée.The figure 2 schematically shows in section a device in the form of a longitudinal parallelepipedal box 15 and which consists essentially of two parts: a fixed part (12) and a movable portion (13). Advantageously, two moving parts are present at each end of the fixed part. The dimensions of the fixed and movable parts are calculated so that the movable part or parts slide or slide easily in the fixed part. By way of example, the fixed and mobile parts are represented in Figures 3a and 3b with their respective ratings (12,13). The figure 3c shows a perspective view of the device. For the fixed part 12, it is essentially an element having three faces and constituting a longitudinal parallelepiped whose lateral parts are open, thus allowing the placement of a sliding element 13 (moving part) being essentially in the form a drawer, that is to say a parallelepipedic box whose at least one side face 16 is closed or closed.

De plus, afin de faciliter le glissement des parties mobiles à l'intérieur de la partie fixe, des poignées (14) peuvent être disposées sur chacune des parties mobiles.In addition, to facilitate the sliding of the moving parts within the fixed part, handles (14) can be arranged on each of the moving parts.

La longueur de chaque partie mobile sera de préférence de l'ordre de la moitié de la partie fixe, de telle sorte qu'en position repliée (non déployée), chacune des deux parties mobiles peut s'intégrer facilement à la partie fixe et qu'en position étendue ou déployée, le volume prévu soit pratiquement doublé.The length of each movable part will preferably be of the order of half of the fixed part, so that in the folded (undeployed) position, each of the two moving parts can easily integrate with the fixed part and that In the extended or deployed position, the planned volume is practically doubled.

De préférence, au moins une des faces longitudinales du parallélépipède tant de la partie fixe que de la partie coulissante est libre ou ouverte, de manière à permettre le placement d'éléments de fixation et en particulier d'éléments de fixation magnétiques (dans le cas des coffrages en métal). Ces éléments de fixation sont conçus de manière à pouvoir permettre la fixation du dispositif au coffrage. Par exemple, on peut prévoir des aimants qui ont une forme telle que représentée à la figure 4. Ces aimants 17 sont installés à l'intérieur de la partie fixe 12 du caisson 15. Leur forme est adaptée aux dimensions de cette partie fixe. Ces aimants sont pourvus d'éléments flexibles tels que des ressorts 18, qui poussent l'aimant contre la face du coffrage 20. Les parties repliées 19 de la partie fixe 12 servent de support pour les aimants.Preferably, at least one of the longitudinal faces of the parallelepiped of both the fixed part and the sliding part is free or open, so as to allow the placement of fastening elements and in particular magnetic fastening elements (in the case metal forms). These fasteners are designed so as to allow the attachment of the device to the formwork. For example, one can foresee magnets that have a shape as represented in figure 4 . These magnets 17 are installed inside the fixed part 12 of the box 15. Their shape is adapted to the dimensions of this fixed part. These magnets are provided with flexible elements such as springs 18, which push the magnet against the face of the formwork 20. The folded portions 19 of the fixed part 12 serve as support for the magnets.

Les figures 5a-5c représentent les différentes étapes permettant la pose dudit caisson. On dispose par les moyens de fixation lesdits caissons 15 sur la partie interne du coffrage 20 du voile à l'aide d'éléments adéquats, et ceci à hauteur du placement de la partie horizontale de la dalle (fig. 5a). On comble le coffrage vertical de béton, de préférence en coulant le béton dans au moins un des espaces se trouvant entre deux caissons 15 non-étendus ou non-déployés, jusqu'à affleurer le niveau inférieur 21 dudit dispositif coulissant (fig. 5b). On fait coulisser ou glisser les parties mobiles 13 dudit dispositif de telle sorte que les parties mobiles de deux dispositifs adjacents rentrent en contact, de manière à former un seul volume. On termine ladite phase de bétonnage en comblant l'espace libre 22 présent entre le coffrage 20 et les différents dispositifs 15 qui sont disposés dans la partie étendue ou déployée du coffrage (fig. 5c) et après séchage, on retire tout simplement les dispositifs successifs, créant ainsi une réservation.The Figures 5a-5c represent the different steps for laying said box. By means of securing said caissons 15 are placed on the internal part of the formwork 20 of the veil by means of suitable elements, and this at the level of the placement of the horizontal part of the slab ( Fig. 5a ). The vertical concrete formwork is filled in, preferably by pouring the concrete into at least one of the spaces between two non-extended or non-deployed caissons, up to the level of the lower level 21 of said sliding device ( Fig. 5b ). The moving parts 13 of said device are slid or slid so that the moving parts of two adjacent devices come into contact, so as to form a single volume. The said concreting phase is completed by filling the free space 22 present between the formwork 20 and the various devices 15 which are arranged in the extended or extended part of the formwork ( Fig. 5c ) and after drying, simply remove the successive devices, creating a reservation.

Les figures 6a-6b montrent une vue en coupe du placement du dispositif 15 vis-à-vis du voile 1. La figure 6b montre le résultat après avoir retiré le dispositif, créant ainsi la réservation 10. Après cette étape, on coule la dalle 5 qui repose sur la réservation 10, des rupteurs thermiques 3 étant mis en place, et enfin on termine par couler la partie suivante du voile vertical 1.The Figures 6a-6b show a sectional view of the placement of the device 15 vis-à-vis the veil 1. The figure 6b shows the result after removing the device, thereby creating the reservation 10. After this step, the slab 5 is cast which rests on the reservation 10, thermal switches 3 being put in place, and finally we end by pouring the next part of the vertical veil 1.

Les figures 7a et 7b représentent plusieurs dispositifs disposés les uns à côté des autres. La figure 7a représente plusieurs dispositifs disposés avec un intervalle qui, lorsque les parties mobiles sous forme de tiroir sont déployées ou étendues, entrent en contact les uns avec les autres. En réalité, la partie « gauche » d'un premier dispositif entre en contact avec la partie « droite » du dispositif adjacent. Comme représenté à la figure 7b, on peut ainsi créer une réservation (10) continue qui s'étend essentiellement sur toute la largeur du voile.The Figures 7a and 7b represent several devices arranged next to each other. The figure 7a is a plurality of devices arranged with an interval which, when the moving parts in drawer form are deployed or extended, come into contact with each other. In fact, the "left" part of a first device comes into contact with the "right" part of the adjacent device. As represented in figure 7b it is thus possible to create a continuous reservation (10) which extends essentially over the entire width of the web.

De manière adéquate, si la largeur d'un coffrage est comprise entre 18 et 20 cm, la taille et en particulier la largeur du dispositif coulissant sera choisie de manière à réaliser une réservation 10 comprise entre 3/4 et 1/2 de la largeur, laissant ainsi une partie de voile 22 comprise entre 1/4 et 1/2 de la largeur totale au niveau de la réservation.Suitably, if the width of a formwork is between 18 and 20 cm, the size and in particular the width of the sliding device will be chosen so as to make a reservation 10 between 3/4 and 1/2 of the width , thus leaving a sail portion 22 between 1/4 and 1/2 of the total width at the reservation.

De manière particulièrement avantageuse, la largeur du dispositif coulissant est de l'ordre de 2/3 de la largeur du voile, c'est-à-dire comprise entre 12 et 13 cm. La longueur de la partie fixe du dispositif coulissant peut être de plusieurs mètres. L'avantage principal du dispositif de l'invention et du procédé d'utilisation s'observe surtout quand la largeur de la partie 22 doit être minimale, à cause de la longueur des armatures faisant partie des rupteurs thermiques. Comme on le voit à la figure 1, une longueur maximale de la partie d'armature 23 noyée dans le béton du côté du voile (donc à gauche du rupteur 3) assurera la stabilité de la dalle. Le dispositif de l'invention permet ainsi de couler le béton de façon rapide et efficace en deux phases : d'abord entre les dispositifs non-étendus ou non-déployés, et puis (après extension ou déploiement) entre les dispositifs étendus ou déployés et le coffrage (comblant ainsi l'espace étroit 22). Du fait des dimensions importantes des espaces libres entre les dispositifs non-étendus ou non-déployés, la première phase est effectuée très rapidement et permet d'obtenir une qualité optimale de béton. En utilisant des dispositifs statiques (que l'on ne peut déployer ou étendre), on serait obligé de couler tout le béton par l'espace étroit 22, ce qui serait inadéquat au niveau de l'efficacité et aurait des répercussions sur la qualité du voile séché.Particularly advantageously, the width of the sliding device is of the order of 2/3 of the width of the web, that is to say between 12 and 13 cm. The length of the fixed part of the sliding device can be several meters. The main advantage of the device of the invention and the method of use is observed especially when the width of the portion 22 must be minimal, because of the length of the reinforcements forming part of the thermal breakers. As we see in figure 1 , a maximum length of the reinforcement portion 23 embedded in the concrete side of the veil (so to the left of the breaker 3) will ensure the stability of the slab. The device of the invention thus makes it possible to cast the concrete rapidly and efficiently in two phases: firstly between the non-extended or non-deployed devices, and then (after expansion or deployment) between the extended or deployed devices and the formwork (thus filling the narrow space 22). Because of the large dimensions of the free spaces between the non-extended or non-deployed devices, the first phase is carried out very quickly and makes it possible to obtain an optimal quality of concrete. By using static devices (which can not be deployed or extended), one would have to pour all the concrete through the narrow space 22, which would be inadequate in terms of efficiency and would have repercussions on the quality of the concrete. dried veil.

De manière adéquate, les diverses parties fixes et mobiles du dispositif ne doivent pas être réalisées dans le même matériau. Elles peuvent être réalisées en métal, en plastique ou autre matériau synthétique tel que des résines, ou même en bois. Ceci dépendra essentiellement des habitudes locales de construction.Suitably, the various fixed and moving parts of the device must not be made of the same material. They can be made of metal, plastic or other synthetic material such as resins, or even wood. This will depend mainly on local construction habits.

Cette manière de fonctionner permet également la pose d'un rupteur thermique, réduisant ainsi les déperditions calorifiques au niveau de la jonction dalle horizontale/voile vertical.This way of working also allows the installation of a thermal breaker, thus reducing the heat losses at the level of the horizontal slab / vertical veil junction.

Claims (12)

Dispositif se présentant sous la forme d'un caisson (15) longitudinal permettant la formation, dans un voile vertical (1) en béton, d'une réservation horizontale continue (10), destinée à supporter une dalle (5) horizontale, lors de la réalisation de structures en béton, caractérisé en ce que le dispositif comprend au moins une partie mobile (13) coulissant dans le sens longitudinal dans une partie fixe (12), permettant d'augmenter le volume du caisson (15) par déploiement ou extension.Device in the form of a longitudinal box (15) for forming, in a vertical veil (1) of concrete, a continuous horizontal reservation (10), intended to support a horizontal slab (5), during the production of concrete structures, characterized in that the device comprises at least one movable part (13) sliding in the longitudinal direction in a fixed part (12), making it possible to increase the volume of the box (15) by deployment or extension . Dispositif selon l'une quelconque des revendications précédentes, se présentant sous la forme d'un caisson (15) longitudinal parallélépipédique.Device according to any one of the preceding claims, in the form of a parallelepipedal longitudinal box (15). Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'il comprend à chacune des extrémités de la partie fixe (12) une partie mobile (13).Device according to claim 1 or 2, characterized in that it comprises at each end of the fixed part (12) a movable part (13). Dispositif selon la revendication 3,
caractérisé en ce que chacune des parties mobiles (13) présente une longueur correspondant à la moitié de la longueur de la partie fixe (12) du caisson de manière à doubler le volume initial lorsque l'on fait coulisser les parties mobiles dans la partie fixe.Device according to claim 3,
characterized in that each of the movable portions (13) has a length corresponding to half the length of the fixed portion (12) of the box so as to double the initial volume when sliding the movable parts in the fixed part . Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins une partie d'une de ses faces de préférence longitudinales n'est pas complètement obturée et permet ainsi le placement de moyens de fixation dudit caisson à des éléments de coffrage.Device according to any one of the preceding claims, characterized in that at least a portion of one of its preferably longitudinal faces is not completely closed and thus allows the placement of fastening means of said box to formwork elements . Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie fixe (12) est réalisée par un espace parallélépipédique ouvert aux extrémités latérales et de préférence ouvert sur une des faces longitudinales, tandis que les parties mobiles sont réalisées sous forme de tiroir, dont au moins une face latérale (16) est fermée ou obturée.Device according to any one of the preceding claims, characterized in that the fixed part (12) is formed by a parallelepipedal space open at the lateral ends and preferably open on one of the longitudinal faces, while the movable parts are designed as a drawer, at least one side face (16) is closed or closed. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que des poignées (14) sont disposées sur les parties coulissantes.Device according to any one of the preceding claims, characterized in that handles (14) are arranged on the sliding parts. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau permettant la réalisation de la partie coulissante (13) est du plastique, du bois et/ou du métal. De même, le matériau permettant la réalisation de la partie fixe (12) peut être en plastique, en bois et/ou en métal.Device according to any one of the preceding claims, characterized in that the material for producing the sliding part (13) is plastic, wood and / or metal. Similarly, the material for the realization of the fixed part (12) can be plastic, wood and / or metal. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la largeur latérale dudit dispositif (15) est comprise entre 3/4 et 1/2 et de préférence proche de 2/3 de la largeur du voile (1).Device according to any one of the preceding claims, characterized in that the lateral width of said device (15) is between 3/4 and 1/2 and preferably close to 2/3 of the width of the web (1). Procédé de formation d'une réservation (10) dans une partie verticale se présentant sous la forme d'un voile de façade en béton, ladite réservation étant destinée à supporter une partie horizontale se présentant sous la forme d'une dalle dans une structure en béton, dans lequel : - on place le coffrage (20) pour la réalisation de la partie verticale sous forme de voile, - on dispose au sein dudit coffrage (20) à hauteur du placement de la partie horizontale une pluralité de dispositifs (15) tels que décrits selon l'une quelconque des revendications précédentes, lesdits dispositifs étant en position non-étendue ou non-déployée, - on comble le coffrage vertical de béton jusqu'à affleurer le niveau inférieur (21) desdits dispositifs (15), - on fait coulisser les parties coulissantes (13) de telle manière à ce que plusieurs dispositifs successifs entrent en contact les uns avec les autres, - on termine ladite phase de bétonnage en comblant l'espace libre (22) présent entre lesdits dispositifs et le coffrage, - après séchage, on retire lesdits dispositifs (15), réalisant ainsi une réservation (10). A method of forming a reservation (10) in a vertical portion in the form of a concrete facade web, said reservation being adapted to support a horizontal portion in the form of a slab in a structure concrete, in which: the formwork (20) is placed for the production of the vertical part in the form of a sail, - Within said formwork (20) is arranged at the height of the horizontal portion a plurality of devices (15) as described in any one of the preceding claims, said devices being in non-extended position or not deployed, the vertical concrete formwork is filled up to flush with the lower level (21) of said devices (15), the sliding parts (13) are slid in such a way that several successive devices come into contact with one another, said concrete phase is completed by filling the free space (22) present between said devices and the formwork, after drying, said devices (15) are removed, thus making a reservation (10). Procédé selon la revendication 10,
dans lequel, pour combler le coffrage jusqu'à affleurer le niveau inférieur (21) desdits dispositifs, on coule le béton dans au moins un espace se trouvant entre deux dispositifs non-étendus ou non-déployés.Process according to claim 10,
wherein, to fill the formwork to flush the lower level (21) of said devices, the concrete is poured into at least one space between two non-extended or non-deployed devices. Utilisation du dispositif selon l'une quelconque des revendications 1 à 9 ou du procédé selon la revendication 10 ou 11 pour la formation d'une réservation (10) destinée à la pose d'un rupteur thermique au niveau de la jonction voile de façade/dalle.Use of the device according to any one of claims 1 to 9 or the method according to claim 10 or 11 for the formation of a reservation (10) intended for the installation of a thermal breaker at the level of the facade sail junction / slab.
EP09158028A 2008-04-16 2009-04-16 Device allowing the formation of a reservation when building concrete walls Withdrawn EP2110495A1 (en)

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CN102364004A (en) * 2011-11-02 2012-02-29 中建三局第二建设工程有限责任公司 Concrete floor hole reserving device capable of being quickly assembled and disassembled
CN103924616A (en) * 2014-04-22 2014-07-16 上海市基础工程集团有限公司 Super-deep underground continuous wall pre-buried shear-force groove manufacturing and installing construction method

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CN103924616B (en) * 2014-04-22 2016-04-06 上海市基础工程集团有限公司 The pre-buried shearing groove of ultra-deep underground continuous wall makes, construction method of installation

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