EP0283391A2 - Method for the realisation of concrete structures such as bridge decks, and arrangement for its application - Google Patents
Method for the realisation of concrete structures such as bridge decks, and arrangement for its application Download PDFInfo
- Publication number
- EP0283391A2 EP0283391A2 EP88400579A EP88400579A EP0283391A2 EP 0283391 A2 EP0283391 A2 EP 0283391A2 EP 88400579 A EP88400579 A EP 88400579A EP 88400579 A EP88400579 A EP 88400579A EP 0283391 A2 EP0283391 A2 EP 0283391A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- formwork
- panels
- frame
- base
- shoring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
-
- 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
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/483—Supporting heads
-
- 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
- E04G25/00—Shores or struts; Chocks
- E04G2025/006—Heads therefor, e.g. pivotable
Definitions
- the present invention relates to a method for making a concrete structure having a roughly horizontal lower surface and at least partly spaced from the ground, such as a bridge deck.
- the traditional technique for making relatively small bridges, for example for road crossings, comprises the following stages: - We first build a shoring structure, consisting of "towers" in metal frame or not, resting on the ground and rising to a height slightly lower than the level of the deck that we want to establish. On this frame, screw systems are provided, with vertical displacement, for leveling and formwork. A series of horizontal beams is placed on these screw systems, and horizontal beams are placed transversely to these beams. On the bastaings, formwork plates are laid, generally made of plywood; - the concrete is then poured onto the formwork, it is allowed to set, then disassembly is carried out.
- Another known method to reduce the duration of the operations, consists in constituting the towers with ladder-shaped elements, which are brought horizontally, straightened on the site and joined together by means of a certain number of horizontal crosspieces.
- the dismantling of this frame is done fairly quickly: we remove the horizontal crosspieces and rotate the elements in the form of a ladder around a horizontal axis to bring them back to the ground.
- This solution does not eliminate the operations consisting in removing one after the other the formwork elements, the bastaings if they are not integral with the formwork elements, and the beams.
- the present invention aims to provide a process, usable in particular, for making bridges, and which allows faster assembly and especially disassembly considerably simplified and accelerated.
- the method according to the invention comprises the use of formwork panels provided, on their underside, with a rigid frame equipped with fastening means such as screws and nuts with the similar frame of an adjacent panel, and at least one rectilinear reinforcement, parallel to one of the sides of the frame, and these panels are placed with these parallel reinforcements between them and directed towards the place where the assembly of all the formwork panels will take place.
- rollers are used associated with cam-type locking means, arranged to immobilize the formwork panels relative to the frame by lifting them above the rollers, and to release, when the time comes, the formwork panels by resting them on the rollers.
- the invention also provides a formwork panel specially usable for implementing the above process, and which comprises: - a plate made of unfilled cell material, with two layers of coating made of waterproof material; - reinforcing ribs of unfilled cell material; a rigid frame on the edges of the plate, with a frame carrying means of connection with the frames of adjacent panels, the plate, the ribs and the frame being integral with each other.
- the material with unfilled cells may consist of a honeycomb type structure, with cells perpendicular to the plane of the plate.
- this material consists of a rigid foam, with firm pores, for example of polyurethane.
- Such a material is in fact easier to implement, the honeycomb type structure, since there are no special precautions to be taken to prevent the coating material from entering the cells. This advantage generally compensates for a slightly higher weight.
- the invention also provides a formwork and bearing device, specially usable in the implementation of the above method, and comprising: - a yoke formed by a base and two sides; - a mobile support plate in the screed perpendicular to the base; - A means capable at will of maintaining the support plate in a first position away from the base and of letting it move to a second position closer to the base; - at least one roller mounted in the yoke, with an axis parallel to the base, and the top of which is more moved away from it as the outer face of the support plate in its second position; and - Connection means of the base of the yoke with a support structure, these connection means comprising means for moving the base approximately perpendicular to its plane and a ball joint making it possible to vary within certain limits the orientation of the base with respect to the support structure.
- the means capable of holding and allowing the support plate to move include a cam mounted in the yoke and acting on the internal face of the support plate.
- the cam carries a roller which supports the support plate in the first position away from the base and facilitates the start of the movement of the cam from this first position to the second.
- the formwork panel shown in FIG. 1 comprises a flat plate 1, of "honeycomb” type structure, with cells oriented perpendicular to its plane, with a layer of waterproof outer coating and a layer of waterproof inner coating, the material of the outer covering layer being also chosen to have surface properties such that it is not necessary to use formwork oil between the panel and the concrete.
- the panel 1 is stiffened, on its four sides, by a rigid frame 2, made of metal, which carries on each of its sides reinforcements 3, having threaded holes 4, in which it is planned to insert screws to secure two elements adjacent to each other.
- the holes 4 are eliminated and the assembly of two elements between them is carried out using pliers which bear on the frames of the two elements.
- the panel 1 also carries, on its underside, two robust ribs 5, parallel, and of height greater than that of the frame 2.
- ribs as for the plate 1, a material with a “honeycomb” type structure was chosen, the cells being oriented perpendicular to the plane of the panel 1, that is to say parallel to the cells of the plate 1.
- a rigid polyurethane foam, with firm pores, stabilized, with a density of approximately 90 kg / m3 has been chosen for the plate 1 as for the ribs 5.
- the manufacturing of the panels is as follows:
- the resin panels of the Gelcoat type are of different color depending on whether they cover a lower face or an upper face of the panel.
- the ribs 5 which support the panels and the concrete poured thereon. Their robustness is calculated accordingly. It should be noted that the self-weight of the complete panels is low, of the order of 30 kg / m2 or less, the main load therefore consists of the weight of concrete: approximately 250 kg / m2 and per decimetre of thickness.
- the shoring structure 9 is built, preferably according to the known method which consists in using elements in the form of a ladder 10, which is laid flat on the ground, then that it is straightened vertically and connected together by connecting elements 11.
- the shoring structure carries formwork and rolling devices which will now be described in detail using FIG. 3, before continuing with the description of the process of the invention.
- formwork and rolling devices are indeed a very important element for the implementation of the process.
- a yoke 12 is formed of a base 13 and two sides 14, parallel and identical, only one of which is shown.
- the yoke is shown in the use position, that is to say with its horizontal base and its vertical sides.
- Two load bearing 15 parallel are mounted in the yoke, their shafts 16 being in the same horizontal plane, that is to say parallel to the base 13.
- the flanks each have, in addition, two vertical slots 17, which serve to guide a support plate 18, thanks to pins 19 which penetrate into the slots 17.
- This support plate, parallel to the base can thus move vertically between an upper position shown in solid lines, and a lower position shown in dashes. In the lower position, the upper face of the support plate 18 is slightly below the plane defined by the tops of the rollers 15, while it is largely above the same plane when it is in the upper position.
- a cam 20 For the movement of the support plate, a cam 20 has been provided, constituted by a cylindrical surface with a generator perpendicular to the plane of the sides 14, and whose guide curve is a spiral.
- the cam 20 is mounted in the yoke via a shaft 21, of larger diameter than the shafts 15 of the rollers 16, we will see why later.
- the shaft 21 is integral with a control lever 22, outside the yoke 12.
- the cam 20 engages the underside of the support plate 18, and the rotation of the lever 22 causes the support plate to pass from the upper position to the lower position, and vice versa.
- the spacing between the two plates 14 is greater than the width of the ribs 5, so that these can penetrate the yoke to rest on the rollers 15.
- the height of the plates 14 above the plane of the tops of the rollers 15 is less than the height of the ribs 5, reduced by the height of the reinforcements 3.
- the lower part of the base 13 of the yoke 12 has a recess in the form of a portion of a sphere, into which enters a ball joint 23, mounted on a threaded rod 24, which passes through a "jack nut" 25, provided with handles 26 , and which rests on the end of a tube 27 into which the rod 24 enters.
- the shoring structure comprises a frame with vertical tubes, it is one of them which constitutes the tube 27 If this structure is formed of horizontal beams, the tube 27 is a special tube carried by these beams.
- the ball 23 being immobilized in rotation either by hand or by friction in the recess of the base 13, the actuation of the handles 26 makes it possible to raise the yoke to the desired height, while the presence of the ball allows the adaptation to slopes or overhangs.
- FIG 4 shows a slightly simplified variant of the device of Figure 3.
- the equivalent parts have the same references in both figures.
- the cam 20 instead of having a spiral-shaped section, has an elliptical section: It consists of two identical plates, on either side of the plane of the right half of the figure, these two elliptical-shaped plates being mounted, eccentrically on the same shaft 21. At their most distant end from this shaft, the plates 20 carry a roller 30 which goes slightly beyond their end, and which in the position upper supports the support plate 18.
- the handle 22 to move the cam from its upper position, the latter slides directly against the support plate 18, and its movement is facilitated at first by the presence roller 30, interposed between it and the support plate.
- a fixed stop 31 and a lockable stop 32 are provided which immobilize the handle 22 in the situation corresponding to the upper position of the cam 20.
- FIG. 3 Another difference from FIG. 3 is that the two bearing bearings 15 have been replaced by a single bearing 33 mounted idly on the shaft 21, between the two elliptical parts which form the cam 20.
- the bearing 33 passes through a slot 34 of the carrier plate 18 to support the formwork panel.
- the tubes 27 are put in place, if necessary, the rods 24 with their nut 25, and the yokes 12, in sufficient quantity to support the formwork.
- the spacing of the yokes is equal to the distance between the successive ribs 5, carried either by the same panel 1, or by two adjacent panels assembled.
- the spacing of the yokes is such that each rib is supported by at least one yoke, preferably at least two.
- the panels 1 are then put in place by making them rest by their ribs 5 on the support plates 18. This positioning is done, normally, with the crane 28 of the site.
- the panels 1 are then joined together using screws inserted in the holes 4.
- This has the effect of constituting a continuous and sealed formwork surface, substantially horizontal, that is to say with possibly a slight inclination, complies with the instructions of the owner, weak enough to allow the pouring of concrete.
- This joining of the panels also has the result of allowing subsequent movements of the formwork in a single block, as will be seen below.
- the formwork as a whole, is then moved towards the edge of the bridge, using winches or jacks bearing on the shoring structure.
- a first row of panels has passed the edge of the bridge, that is to say that it is no longer below the deck 29 which has just been poured, these panels are separated from the rest of the formwork, and at the same time, these panels are separated from the rest of the row.
- the operation can start before the end of the trip. Using the crane 28, the panels are easily removed. If desired, several panels can be removed from the row at the same time, and only separated from the ground.
- the shoring structure can then be dismantled in a known manner. Its dismantling can also begin before the end of the formwork removal.
- the cam device for moving the support plate can be replaced by a system with horizontally sliding corners, or by a system with screw jacks or the like.
- the method of fixing the panels together can also be different from that described, and include, for example, quick-clamping systems.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Bridges Or Land Bridges (AREA)
- Sewage (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
Description
La présente invention est relative à un procédé pour confectionner une structure en béton présentant une surface inférieure à peu près horizontale et au moins en partie écartée du sol, telle qu'un tablier de pont.The present invention relates to a method for making a concrete structure having a roughly horizontal lower surface and at least partly spaced from the ground, such as a bridge deck.
La technique traditionnelle, pour la confection de ponts de relativement faible importance, par exemple pour des passages routiers, comporte les étapes suivantes:
- on édifie d'abord une structure d'étaiement, constituée de "tours" en charpente métallique ou non, reposant sur le sol et s'élevant jusqu'à une hauteur faiblement inférieure au niveau du tablier qu'on veut établir. Sur cette charpente, on prévoit des systèmes à vis, à déplacement vertical, pour le nivellement et le décoffrage. On pose sur ces systèmes à vis une série de poutrelles horizontales, et on pose des bastaings horizontaux transversalement à ces poutrelles. Sur les bastaings, on pose des plaques de coffrage, généralement en contreplaqué;
- on coule ensuite le béton sur le coffrage, on le laisse faire prise, puis on procède au démontage.The traditional technique, for making relatively small bridges, for example for road crossings, comprises the following stages:
- We first build a shoring structure, consisting of "towers" in metal frame or not, resting on the ground and rising to a height slightly lower than the level of the deck that we want to establish. On this frame, screw systems are provided, with vertical displacement, for leveling and formwork. A series of horizontal beams is placed on these screw systems, and horizontal beams are placed transversely to these beams. On the bastaings, formwork plates are laid, generally made of plywood;
- the concrete is then poured onto the formwork, it is allowed to set, then disassembly is carried out.
Pour procéder au démontage, on commence par faire le décoffrage à l'aide des systèmes à vis, par l'intermédiaire des bastaings et poutrelles. On extrait, ensuite, les éléments de coffrage, qui ne sont plus bloqués, ainsi que les bastaings et les poutrelles. Dans une dernière phase, on démonte la charpente d'étaiement.To proceed with the dismantling, we start by removing the formwork using screw systems, using the bastaings and beams. We then extract the formwork elements, which are no longer blocked, as well as the bastaings and the beams. In a final phase, the shoring structure is dismantled.
On conçoit que toutes les opérations de montage et démontage de cet ensemble sont longues, et demandent un travail important.It is understood that all the assembly and disassembly operations of this assembly are long, and require significant work.
On a déjà proposé, pour réduire ces inconvénients, d'utiliser des panneaux de coffrage qui sont solidaires des bastaings, ce qui diminue d'autant le nombre d'opérations. Selon un autre procédé, on a proposé de placer des roulettes sous les tours, et de déplacer celles-ci, après avoir abaissé le coffrage, de façon à procéder au démontage sans être au-dessous de la structure en béton. Cela permet d'utiliser une grue, et permet d'accélérer considérablement le processus du démontage. Cependant, ce procédé exige une préparation complémentaire du sol, puisqu'on doit déplacer l'ensemble de la charpente, sur une distance à peu près égale à la largeur du pont.It has already been proposed, to reduce these drawbacks, to use formwork panels which are integral with the bastaings, which correspondingly reduces the number of operations. According to another method, it has been proposed to place casters under the towers, and to move the latter, after having lowered the formwork, so as to disassemble without being below the concrete structure. This allows the use of a crane, and considerably speeds up the disassembly process. However, this process requires additional preparation of the ground, since the entire frame must be moved over a distance approximately equal to the width of the bridge.
Un autre procédé connu, pour réduire la durée des opérations, consiste à constituer les tours avec des éléments en forme d'échelle, qui sont amenés horizontalement, redressés sur le site et solidarisés entre eux au moyen d'un certain nombre de traverses horizontales. Le démontage de cette charpente se fait assez rapidement: on enlève les traverses horizontales et on fait pivoter les éléments en forme d'échelle autour d'un axe horizontal pour les ramener au sol. Cette solution ne supprime pas les opérations consistant à enlever l'un après l'autre les éléments de coffrage, les bastaings s'ils ne sont pas solidaires des éléments de coffrage, et les poutrelles.Another known method, to reduce the duration of the operations, consists in constituting the towers with ladder-shaped elements, which are brought horizontally, straightened on the site and joined together by means of a certain number of horizontal crosspieces. The dismantling of this frame is done fairly quickly: we remove the horizontal crosspieces and rotate the elements in the form of a ladder around a horizontal axis to bring them back to the ground. This solution does not eliminate the operations consisting in removing one after the other the formwork elements, the bastaings if they are not integral with the formwork elements, and the beams.
La présente invention a pour but de fournir un procédé, utilisable en particulier, pour la confection de ponts, et qui permet un montage plus rapide et surtout un démontage considérablement simplifié et accéléré.The present invention aims to provide a process, usable in particular, for making bridges, and which allows faster assembly and especially disassembly considerably simplified and accelerated.
L'invention fournit, en conséquence, un procédé pour confectionner une structure en béton présentant une surface inférieure à peu près horizontale et au moins en partie écartée du sol, telle qu'un tablier de pont, ce procédé comportant l'établissement d'une charpente d'étaiement reposant sur le sol, la pose sur cette charpente de panneaux de coffrage dont la surface supérieure est à peu près horizontale, le réglage de la position exacte des éléments de coffrage à l'aide de moyens de levage intercalés entre la charpente d'étaiement et les panneaux de coffrage, la coulée du béton sur ces éléments de coffrage et l'enlèvement des panneaux de coffrage et de la charpente d'étaiement après la prise du béton, qui présente pour particularité que:
- a) on utilise des panneaux de coffrage solidaires d'une part de moyens pour solidariser entre eux des panneaux adjacents et, d'autre part, d'éléments raidisseurs rectilignes, ayant la forme de poutres, et parallèles entre eux;
- b) on prévoit, entre la charpente d'étaiement et les panneaux de coffrage, des galets ou surface de glissement, susceptibles de coopérer avec lesdits éléments raidisseurs pour déplacer horizontalement l'ensemble formé par les panneaux de coffrage solidarisés entre eux sur une distance limitée;
- c) après la prise du béton, on décoffre, puis on déplace ledit ensemble jusqu'à ce qu'au moins un panneau de coffrage soit au-delà de la structure en béton qui a été coulée et a fait prise;
- d) on désolidarise ce panneau de coffrage des autres et on l'enlève;
- e) on recommence les opérations c) et d) jusqu'à enlèvement de tous les panneaux de coffrage;
- f) on démonte ensuite la charpente d'étaiement.
- a) using formwork panels integral on the one hand with means for joining together adjacent panels and, on the other hand, rectilinear stiffening elements, in the form of beams, and parallel to each other;
- b) there are provided, between the shoring frame and the formwork panels, rollers or sliding surface capable of cooperating with said stiffening elements to horizontally move the assembly formed by the formwork panels secured between them over a limited distance;
- c) after the setting of the concrete, it is stripped, then the said assembly is moved until at least one formwork panel is beyond the concrete structure which has been poured and set;
- d) this formwork panel is separated from the others and removed;
- e) operations c) and d) are repeated until all the shuttering panels have been removed;
- f) then dismantling the shoring frame.
De préférence, le procédé selon l'invention comprend l'utilisation de panneaux de coffrage pourvus, sur leur face inférieure, d'un cadre rigide équipé de moyens de solidarisation tels que vis et noix avec le cadre similaire d'un panneau adjacent, et d'au moins un renfort rectiligne, parallèle à un des côtés du cadre, et on place ces panneaux avec ces renforts parallèles entre eux et dirigés vers l'endroit où se fera le démontage de l'ensemble des panneaux de coffrage.Preferably, the method according to the invention comprises the use of formwork panels provided, on their underside, with a rigid frame equipped with fastening means such as screws and nuts with the similar frame of an adjacent panel, and at least one rectilinear reinforcement, parallel to one of the sides of the frame, and these panels are placed with these parallel reinforcements between them and directed towards the place where the assembly of all the formwork panels will take place.
Suivant une modalité avantageuse, on utilise des galets associés à des moyens de blocage du type à came, disposés pour immobiliser les panneaux de coffrage par rapport à la charpente en les soulevant au-dessus des galets, et pour libérer, le moment venu, les panneaux de coffrage en les faisant reposer sur les galets.According to an advantageous method, rollers are used associated with cam-type locking means, arranged to immobilize the formwork panels relative to the frame by lifting them above the rollers, and to release, when the time comes, the formwork panels by resting them on the rollers.
L'invention fournit encore un panneau de coffrage spécialement utilisable pour la mise en oeuvre du procédé ci-dessus, et qui comporte:
- une plaque en matériau à alvéoles non remplis, avec deux couches de revêtement en matériau étanche;
- des nervures de renfort en matériau à alvéoles non remplis;
- un cadre rigide sur les bords de la plaque, à cadre portant des moyens de liaison avec les cadres de panneaux adjacents,
la plaque, les nervures et le cadre étant solidaires les uns des autres.The invention also provides a formwork panel specially usable for implementing the above process, and which comprises:
- a plate made of unfilled cell material, with two layers of coating made of waterproof material;
- reinforcing ribs of unfilled cell material;
a rigid frame on the edges of the plate, with a frame carrying means of connection with the frames of adjacent panels,
the plate, the ribs and the frame being integral with each other.
Le matériau à alvéoles non remplis peut être constitué par une structure de type nid d'abeilles, à cellules perpendiculaires au plan de la plaque. On préfère cependant que ce matériau soit constitué par une mousse rigide, a pores fermes, par exemple en polyuréthanne. Un tel matériau est en effet plus facile à mettre en oeuvre, la structure de type nid d'abeilles, car il n'y a pas de précautions spéciales à prendre pour empêcher que la matière de revêtement pénètre dans les cellules. Cet avantage compense en général un poids légèrement plus élevé.The material with unfilled cells may consist of a honeycomb type structure, with cells perpendicular to the plane of the plate. However, it is preferred that this material consists of a rigid foam, with firm pores, for example of polyurethane. Such a material is in fact easier to implement, the honeycomb type structure, since there are no special precautions to be taken to prevent the coating material from entering the cells. This advantage generally compensates for a slightly higher weight.
L'invention fournit aussi un dispositif de décoffrage et roulement, spécialement utilisable dans la mise en oeuvre du procédé ci-dessus, et comportant:
- une chape formée d'une base et de deux flancs;
- un plateau-support mobile dans la chape perpendiculairement à la base;
- un moyen capable à volonté de maintenir le plateau-support dans une première position écartée de la base et de le laisser se déplacer jusqu'à une deuxième position plus rapprochée de la base;
- au moins un rouleau monté dans la chape, à axe parallèle à la base, et dont le sommet est plus écarté de celle-ci que la face extérieure du plateau-support dans sa seconde position; et
- des moyens de liaison de la base de la chape avec une structure support, ces moyens de liaison comportant des moyens pour déplacer la base à peu près perpendiculairement à son plan et une rotule permettant de faire varier dans certaines limites l'orientation de la base par rapport à la structure support.The invention also provides a formwork and bearing device, specially usable in the implementation of the above method, and comprising:
- a yoke formed by a base and two sides;
- a mobile support plate in the screed perpendicular to the base;
- A means capable at will of maintaining the support plate in a first position away from the base and of letting it move to a second position closer to the base;
- at least one roller mounted in the yoke, with an axis parallel to the base, and the top of which is more moved away from it as the outer face of the support plate in its second position; and
- Connection means of the base of the yoke with a support structure, these connection means comprising means for moving the base approximately perpendicular to its plane and a ball joint making it possible to vary within certain limits the orientation of the base with respect to the support structure.
De préférence, dans ce dispositif de décoffrage et roulement, les moyens capables de maintenir et de laisser se déplacer le plateau-support comprennent une came montée dans la chape et agissant sur la face interne du plateau-support.Preferably, in this formwork and rolling device, the means capable of holding and allowing the support plate to move include a cam mounted in the yoke and acting on the internal face of the support plate.
Avantageusement, la came porte un galet qui soutient le plateau-support dans la première position écartée de la base et facilite le début du déplacement de la came depuis cette première position vers la seconde.Advantageously, the cam carries a roller which supports the support plate in the first position away from the base and facilitates the start of the movement of the cam from this first position to the second.
L'invention va maintenant être exposée de façon plus détaillée à l'aide d'un exemple pratique illustré à l'aide des figures, parmi lesquelles:
- Figure 1 est une vue de dessous, en perspective, d'un panneau de décoffrage pour la mise en oeuvre du procédé selon l'invention.
- Figure 2 est une vue en perspective schématique d'un tablier de pont construit selon le procédé de l'invention, au moment de l'enlèvement des panneaux de décoffrage.
- Figure 3 est une coupe du dispositif à rouleaux pour supporter les panneaux de coffrage.
- Figure 4 est une vue moitié en coupe et moitié en élévation d'une variante du dispositif de la figure 3.
- Figure 1 is a bottom view, in perspective, of a formwork panel for implementing the method according to the invention.
- Figure 2 is a schematic perspective view of a bridge deck constructed according to the method of the invention, at the time of removal of the formwork panels.
- Figure 3 is a section of the roller device for supporting the formwork panels.
- FIG. 4 is a view in half in section and half in elevation of a variant of the device in FIG. 3.
Le panneau de décoffrage représenté à la figure 1 comprend une plaque plane 1, à structure du type "nid d'abeilles", à cellules orientées perpendiculairement à son plan, avec une couche de revêtement extérieure étanche et une couche de revêtement intérieure étanche, la matière de la couche de revêtement extérieure étant en outre choisie pour avoir des propriétés de surface telles qu'il n'est pas nécessaire d'utiliser de l'huile de coffrage entre le panneau et le béton.The formwork panel shown in FIG. 1 comprises a
Le panneau 1 est raidi, sur ses quatre côtés, par un cadre rigide 2, en métal, qui porte sur chacun de ses côtés des renforts 3, comportant des trous filetés 4, dans lesquels il est prévu d'insérer des vis pour solidariser deux éléments adjacents entre eux.The
Suivant une variante, les trous 4 sont supprimés et l'assemblage de deux éléments entre eux est réalisé à l'aide de pinces qui prennent appui sur les cadres des deux éléments.According to a variant, the holes 4 are eliminated and the assembly of two elements between them is carried out using pliers which bear on the frames of the two elements.
Le panneau 1 porte encore, sur sa face inférieure, deux robustes nervures 5, parallèles, et de hauteur supérieure à celle du cadre 2.The
Pour les nervures, comme pour la plaque 1, on a choisi un matériau à structure de type "nid-d'abeilles", les cellules étant orientées perpendiculairement au plan du panneau 1, c'est-à-dire parallèles aux cellules de la plaque 1.For the ribs, as for the
Dans une variante avantageuse on a choisi, pour la plaque 1 comme pour les nervures 5, une mousse de polyuréthanne rigide, à pores fermes, stabilisée, de masse volumique environ 90 kg/m³.In an advantageous variant, a rigid polyurethane foam, with firm pores, stabilized, with a density of approximately 90 kg / m³ has been chosen for the
La fabrication des panneaux, dans ce cas est la suivante:The manufacturing of the panels, in this case is as follows:
On pose dans un moule des panneaux d'une résine type "Gelcoat" connue pour sa très faible adhérence sur le béton, on dépose sur ces panneaux du tissu de verre imprégné de résine polyester non polymérisée, et sur ces panneaux, la plaque de mousse de polyuréthanne, avec ses nervures, on la recouvre de tissu de verre imprégné de résine polyester puis des panneaux de résine type "Gelcoat", et on chauffe le tout jusqu'à obtenir un ensemble polymérisé rigide.We place in a mold panels of a resin type "Gelcoat" known for its very poor adhesion to concrete, we deposit on these panels glass fabric impregnated with unpolymerized polyester resin, and on these panels, the foam plate of polyurethane, with its ribs, it is covered with glass fabric impregnated with polyester resin and then with resin panels of the "Gelcoat" type, and the whole is heated until a rigid polymerized unit is obtained.
Avantageusement, pour faciliter le travail au chantier, les panneaux de résine type Gelcoat sont de couleur différente selon qu'ils recouvrent une face inférieure ou une face supérieure du panneau.Advantageously, to facilitate work on site, the resin panels of the Gelcoat type are of different color depending on whether they cover a lower face or an upper face of the panel.
Ce sont les nervures 5 qui supportent les panneaux et le béton coulé sur ces derniers. Leur robustesse est calculée en conséquence. Il est à noter que le poids propre des panneaux complets est faible, de l'ordre de 30 kg/m² ou moins, la charge principale est donc constituée par le poids de béton: environ 250 kg/m² et par décimètre d'épaisseur.These are the ribs 5 which support the panels and the concrete poured thereon. Their robustness is calculated accordingly. It should be noted that the self-weight of the complete panels is low, of the order of 30 kg / m² or less, the main load therefore consists of the weight of concrete: approximately 250 kg / m² and per decimetre of thickness.
Dans la pratique on utilise deux types de panneaux, les uns sont tels qu'on vient de les décrire, et sur les autres, une série de perçages ont été créés à la mise en forme le long des nervures 5, ces trous reliant la face supérieure du panneau à la face inférieure de la nervure, dans le plan axial de celle-ci. Ces trous servent au bridage d'éléments de coffrage destinés notamment à la confection des bordures du tablier du pont.In practice, two types of panels are used, some of which are as described above, and on the others, a series of holes have been created during shaping along the ribs 5, these holes connecting the face. top of the panel to the underside of the rib, in the axial plane thereof. These holes are used for clamping shuttering elements intended in particular for making the edges of the bridge deck.
Le mode opératoire du procédé de l'invention va maintenant être décrit en s'aidant de la figure 2.The operating mode of the process of the invention will now be described with the help of FIG. 2.
Après avoir préparé le sol de façon convenable, on édifie la structure d'étaiement 9, de préférence selon le procédé connu qui consiste à utiliser des éléments en forme d'échelle 10, qu'on pose à plat sur le sol, puis qu'on redresse à la verticale et qu'on relie entre eux par des éléments de liaison 11.After having prepared the ground in a suitable manner, the shoring structure 9 is built, preferably according to the known method which consists in using elements in the form of a
Il est également possible, conformément à la pratique courante, de constituer la structure d'étaiement avec une série de poutres horizontales portées sur des montants verticaux écartés, ou sur des consoles solidaires des culées du pont, pour laisser le passage. Le mode de construction de la structure d'étaiement est en dehors de l'invention.It is also possible, in accordance with current practice, to constitute the shoring structure with a series of horizontal beams carried on spaced vertical uprights, or on consoles integral with the bridge abutments, to allow passage. The mode of construction of the shoring structure is outside the invention.
La structure d'étaiement porte des dispositifs de décoffrage et de roulement qu'on va maintenant décrire en détail à l'aide de la figure 3, avant de poursuivre l'exposé du procédé de l'invention. Ces dispositifs de décoffrage et de roulement sont en effet un élément très important pour la mise en oeuvre du procédé.The shoring structure carries formwork and rolling devices which will now be described in detail using FIG. 3, before continuing with the description of the process of the invention. These formwork and rolling devices are indeed a very important element for the implementation of the process.
Une chape 12 est formée d'une base 13 et de deux flancs 14, parallèles et identiques, dont un seul est représenté. Sur la figure, la chape est montrée en position d'utilisation, c'est-à-dire avec sa base horizontale et ses flancs verticaux. Deux roulements porteurs 15 parallèles sont montés dans la chape, leurs arbres 16 étant dans un même plan horizontal, c'est-à-dire parallèle à la base 13. Les flancs présentent, en outre, chacun deux lumières verticales 17, qui servent au guidage d'un plateau-support 18, grâce à des tétons 19 qui pénètrent dans les fentes 17. Ce plateau-support, parallèle à la base, peut ainsi se déplacer verticalement entre une position supérieure représentée en traits pleins, et une position inférieure représentée en tirets. Dans la position inférieure, la face supérieure du plateau-support 18 est légèrement au-dessous du plan défini par les sommets des rouleaux 15, alors qu'elle est largement au-dessus du même plan quand elle est dans la position supérieure.A
Pour le déplacement du plateau-support, on a prévu une came 20, constituée par une surface cylindrique à génératrice perpendiculaire au plan des flancs 14, et dont la courbe directrice est une spirale. La came 20 est montée dans la chape par l'intermédiaire d'un arbre 21, de diamètre plus important que les arbres 15 des rouleaux 16, on verra plus loin pourquoi. L'arbre 21 est solidaire d'un levier de commande 22, extérieur à la chape 12. La came 20 engage la face inférieure du plateau-support 18, et la rotation du levier 22 fait passer le plateau-support de la position supérieure à la position inférieure, et vice versa.For the movement of the support plate, a
L'écartement entre les deux plaques 14 est supérieur à la largeur des nervures 5, si bien que celles-ci peuvent pénétrer dans la chape pour reposer sur les rouleaux 15. La hauteur des plaques 14 au-dessus du plan des sommets des rouleaux 15 est inférieure à la hauteur des nervures 5, diminuée de la hauteur des renforts 3.The spacing between the two
La partie inférieure de la base 13 de la chape 12 présente un évidement en forme de portion de sphère, dans lequel pénètre une rotule 23, montée sur une tige 24, filetée, qui traverse un "écrou de vérin" 25, pourvu de poignées 26, et qui repose sur l'extrémité d'un tube 27 dans lequel pénètre la tige 24. Dans le cas où la structure d'étaiement comprend une charpente à tubes verticaux, c'est l'un d'eux qui constitue le tube 27. Si cette structure est formée de poutres horizontales, le tube 27 est un tube spécial porté par ces poutres.The lower part of the
La rotule 23 étant immobilisée en rotation soit à la main, soit par frottement dans l'évidement de la base 13, l'actionnement des poignées 26 permet d'élever la chape à la hauteur désirée, cependant que la présence de la rotule permet l'adaptation à des pentes ou dévers.The
La figure 4 montre une variante, un peu simplifiée du dispositif de la figure 3. Les pièces équivalentes portent les mêmes repères sur les deux figures. La came 20 au lieu d'avoir une section en forme de spirale, a une section en forme d'ellipse: Elle est constituée de deux plaques identiques, de part et d'autre du plan de la moitié droite de la figure, ces deux plaques en forme d'ellipse étant montées, de façon excentrée sur le même arbre 21. A leur extrémité la plus écartée de cet arbre, les plaques 20 portent un galet 30 qui va légèrement au-delà de leur extrémité, et qui dans la position supérieure supporte le plateau-support 18. Ainsi, lorsqu'on agit sur la poignée 22 pour déplacer la came à partir de sa position supérieure, celle-ci se glisse directement contre le plateau-support 18, et son déplacement est facilité au début par la présence du galet 30, intercalé entre elle et le plateau-support.Figure 4 shows a slightly simplified variant of the device of Figure 3. The equivalent parts have the same references in both figures. The
Pour empêcher un déplacement intempestif de la came, il est prévu une butée fixe 31 et une butée verrouillable 32 qui immobilisent la poignée 22 dans la situation correspondant à la position supérieure de la came 20.To prevent inadvertent movement of the cam, a fixed
Une autre différence avec la figure 3 consiste en ce que les deux roulements porteurs 15 ont été remplacés par un roulement unique 33 monté fou sur l'arbre 21, entre les deux pièces en ellipse qui forment la came 20. Quand le plateau porteur est dans la position inférieure, représentée en tirets, le roulement 33 passe à travers une fente 34 du plateau porteur 18 pour supporter le panneau de coffrage.Another difference from FIG. 3 is that the two bearing
On va maintenant reprendre l'exposé du procédé.We will now resume the description of the process.
Après avoir édifié la structure d'étaiement 9, on met en place, si cela est nécessaire, les tubes 27, on dispose les tiges 24 avec leur écrou 25, et les chapes 12, en quantité suffisante pour supporter le coffrage. Dans le sens parallèle au bord du pont, l'écartement des chapes est égal à la distance entre les nervures 5 successives, portées soit par un même panneau 1, soit par deux panneaux adjacents assemblés. Dans le sens perpendiculaire au bord du pont, l'espacement des chapes est tel que chaque nervure soit supportée par au moins une chape, de préférence au moins deux.After having built the shoring structure 9, the
Par action sur les leviers 22, on place les plateaux-supports 18 en position supérieure. On agit sur les écrous de vérin 25 pour amener les plateaux-supports à une hauteur convenable pour un nivellement correct des panneaux de coffrage qu'ils devront porter.By acting on the
On met alors en place les panneaux 1 en les faisant reposer par leurs nervures 5 sur les plateaux-supports 18. Cette mise en place se fait, normalement, avec la grue 28 du chantier.The
On solidarise ensuite les panneaux 1 entre eux à l'aide de vis insérées dans les trous 4. Cela a pour effet de constituer une surface de coffrage continue et étanche, sensiblement horizontale, c'est-à-dire avec éventuellement une faible inclinaison, conforme aux prescriptions du maître de l'ouvrage, assez faible pour permettre la coulée du béton. Cette solidarisation des panneaux a également pour résultat de permettre les déplacements ultérieurs du coffrage en un seul bloc, comme on le verra plus loin.The
On procède alors à la coulée du béton. On observera que le poids du béton, auquel s'ajoute le poids, bien plus faible, du coffrage, est transmis à la structure d'étaiement par l'intermédiaire du plateau-support 18, de la came 20 et de son arbre 21, ainsi que de la chape 12 et de la tige 24. Ces pièces sont calculées en conséquence, en particulier l'arbre 21.Concrete is then poured. It will be observed that the weight of the concrete, to which is added the much lower weight of the formwork, is transmitted to the shoring structure via the
Après la prise du béton, pour procéder au décoffrage, il suffit d'actionner les leviers 22 pour abaisser la came 20 et les plateaux-supports 18, jusqu'à ce que les plateaux 5 reposent sur les rouleaux 15 par l'intermédiaire des nervures 5. On observera que ces rouleaux n'ont à supporter qu'une charge très faible, de l'ordre du centième de ce que doit supporter la chape lorsque le poids du béton se fait sentir.After setting the concrete, to proceed with the formwork, it is enough to actuate the
On déplace alors le coffrage, dans son ensemble, vers le bord du pont, à l'aide de treuils ou de vérins prenant appui sur la structure d'étaiement. Lorsqu'une première rangée de panneaux a dépassé le bord du pont, c'est-à-dire qu'elle n'est plus au-dessous du tablier 29 qu'on vient de couler, on désolidarise ces panneaux du reste du coffrage, et en même temps, on désolidarise entre eux ces panneaux du reste de la rangée. L'opération peut commencer avant la fin du déplacement. A l'aide de la grue 28, on enlève les panneaux sans difficulté. Si on le désire, on peut enlever plusieurs panneaux de la rangée en même temps, et ne les désolidariser qu'au sol.The formwork, as a whole, is then moved towards the edge of the bridge, using winches or jacks bearing on the shoring structure. When a first row of panels has passed the edge of the bridge, that is to say that it is no longer below the
On recommence ensuite l'opération consistant à faire avancer le coffrage jusqu'à dégager une rangée, puis à enlever les panneaux de cette rangée à l'aide de la grue, jusqu'à démontage complet du coffrage.The operation consisting in advancing the formwork is then repeated until a row is cleared, then the panels of this row are removed using the crane, until the formwork is completely dismantled.
La structure d'étaiement peut être ensuite démontée de manière connue. Son démontage peut d'ailleurs commencer avant la fin de l'enlèvement du coffrage.The shoring structure can then be dismantled in a known manner. Its dismantling can also begin before the end of the formwork removal.
L'invention est susceptible de nombreuses variantes, sans sortir de son cadre. Par exemple, on peut rempla- cer le dispositif à came pour le déplacement du plateau-support par un système à coins coulissant horizontalement, ou bien par un système à vérins à vis ou autres. Le mode de fixation des panneaux entre eux peut, également, être différent de celui qui est décrit, et comporter, par exemple, des systèmes à serrage rapide.The invention is susceptible of numerous variants, without departing from its scope. For example, the cam device for moving the support plate can be replaced by a system with horizontally sliding corners, or by a system with screw jacks or the like. The method of fixing the panels together can also be different from that described, and include, for example, quick-clamping systems.
Claims (12)
caractérisé en ce que:
characterized in that:
- une plaque (1) en matériau à alvéoles non remplis, avec deux couches de revêtement en matériau étanche;
- des nervures de renfort (5) en matériau à alvéoles non remplis;
- un cadre rigide (2) sur les bords de la plaque, ce cadre portant des moyens de liaison avec les cadres de panneaux adjacents,
la plaque, les nervures et le cadre étant solidaires les uns des autres.7. Formwork panel specially intended for implementing the method according to one of claims 1 to 6, characterized in that it comprises:
- a plate (1) of unfilled cell material, with two layers of coating of waterproof material;
- reinforcing ribs (5) of material with unfilled cells;
a rigid frame (2) on the edges of the plate, this frame carrying means of connection with the frames of adjacent panels,
the plate, the ribs and the frame being integral with each other.
- une chape (12) formée d'une base (13) et de deux flancs (14);
- un plateau-support (18) mobile dans la chape perpendiculairement à la base (13);
- un moyen (22) capable à volonté de maintenir le plateau-support dans une première position écartée de la base et de le laisser se déplacer jusqu'à une deuxième position plus rapprochée de la base;
- au moins un rouleau (15) monté dans la chape, à axe parallèle à la base, et dont le sommet est plus écarté de celle-ci que la face extérieure du plateau-support dans sa seconde position,
et des moyens de liaison de la base de la chape avec une structure support, ces moyens de liaison comportant des moyens pour déplacer la base à peu près perpendiculairement à son plan et une rotule permettant de faire varier dans certaines limites l'orientation de la base par rapport à la structure support.10. formwork and bearing device, specially intended for implementing the method according to one of claims 1 to 6, characterized in that it comprises:
- a yoke (12) formed of a base (13) and two sides (14);
- a support plate (18) movable in the yoke perpendicular to the base (13);
- A means (22) capable at will of maintaining the support plate in a first position away from the base and of letting it move to a second position closer to the base;
- at least one roller (15) mounted in the yoke, with an axis parallel to the base, and the top of which is further away from the latter than the outer face of the support plate in its second position,
and means for connecting the base of the yoke with a support structure, these connection means comprising means for moving the base approximately perpendicular to its plane and a ball joint making it possible to vary within certain limits the orientation of the base with respect to the support structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88400579T ATE80195T1 (en) | 1987-03-17 | 1988-03-11 | METHOD OF REALIZING A CONCRETE STRUCTURE LIKE BRIDGE SHEETS AND DEVICE FOR APPLICATION. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8703633 | 1987-03-17 | ||
FR8703633A FR2612534B1 (en) | 1987-03-17 | 1987-03-17 | METHOD FOR MAKING A CONCRETE STRUCTURE, SUCH AS A DECK APRON, AND APPARATUS FOR IMPLEMENTING SAME |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0283391A2 true EP0283391A2 (en) | 1988-09-21 |
EP0283391A3 EP0283391A3 (en) | 1989-11-23 |
EP0283391B1 EP0283391B1 (en) | 1992-09-02 |
Family
ID=9349061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88400579A Expired - Lifetime EP0283391B1 (en) | 1987-03-17 | 1988-03-11 | Method for the realisation of concrete structures such as bridge decks, and arrangement for its application |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0283391B1 (en) |
AT (1) | ATE80195T1 (en) |
DE (1) | DE3874172T2 (en) |
DK (1) | DK170706B1 (en) |
ES (1) | ES2035327T3 (en) |
FR (1) | FR2612534B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008061501A1 (en) * | 2006-11-23 | 2008-05-29 | Peri Gmbh | Prop head for ceiling formwork |
US7472878B2 (en) | 2003-11-03 | 2009-01-06 | Peri Gmbh | Lowering device comprising a support structure |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018203612A1 (en) | 2018-03-09 | 2019-09-12 | Peri Gmbh | Lowering device and support device and slab formwork with such a lowering device |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1387353A (en) * | 1963-12-28 | 1965-01-29 | Sumitomo Metal Ind | Formwork or steel molds for concrete |
DE1234759B (en) * | 1962-12-10 | 1967-02-23 | Polensky & Zoellner | Method for shuttering the individual superstructure fields of a multi-span bridge |
GB1102423A (en) * | 1965-06-18 | 1968-02-07 | Smiths Industries Ltd | Improvements relating to props for supporting formwork for casting floors and the like |
US3381929A (en) * | 1963-07-24 | 1968-05-07 | Elton Ind Inc | Form assembly with adjustable retaining means for variable spacing |
DE2253588A1 (en) * | 1972-11-02 | 1974-05-16 | Omega Geruestbau Gmbh | FORMING FRAME FOR CONCRETE FORMWORK |
FR2254701A1 (en) * | 1973-12-13 | 1975-07-11 | Huennebeck Gmbh | Support for lowering scaffolding or formwork - with swivelling projecting end lever lockable onto it |
DE2916452B1 (en) * | 1979-04-24 | 1980-07-31 | Rolf Dipl-Ing Benz | Support for long beams in a head fork |
GB2107776A (en) * | 1981-09-23 | 1983-05-05 | Rapid Metal Developments Ltd | Formwork support device for use in a construction system |
-
1987
- 1987-03-17 FR FR8703633A patent/FR2612534B1/en not_active Expired
-
1988
- 1988-03-10 DK DK130688A patent/DK170706B1/en not_active IP Right Cessation
- 1988-03-11 ES ES198888400579T patent/ES2035327T3/en not_active Expired - Lifetime
- 1988-03-11 EP EP88400579A patent/EP0283391B1/en not_active Expired - Lifetime
- 1988-03-11 DE DE8888400579T patent/DE3874172T2/en not_active Expired - Fee Related
- 1988-03-11 AT AT88400579T patent/ATE80195T1/en not_active IP Right Cessation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1234759B (en) * | 1962-12-10 | 1967-02-23 | Polensky & Zoellner | Method for shuttering the individual superstructure fields of a multi-span bridge |
US3381929A (en) * | 1963-07-24 | 1968-05-07 | Elton Ind Inc | Form assembly with adjustable retaining means for variable spacing |
FR1387353A (en) * | 1963-12-28 | 1965-01-29 | Sumitomo Metal Ind | Formwork or steel molds for concrete |
GB1102423A (en) * | 1965-06-18 | 1968-02-07 | Smiths Industries Ltd | Improvements relating to props for supporting formwork for casting floors and the like |
DE2253588A1 (en) * | 1972-11-02 | 1974-05-16 | Omega Geruestbau Gmbh | FORMING FRAME FOR CONCRETE FORMWORK |
FR2254701A1 (en) * | 1973-12-13 | 1975-07-11 | Huennebeck Gmbh | Support for lowering scaffolding or formwork - with swivelling projecting end lever lockable onto it |
DE2916452B1 (en) * | 1979-04-24 | 1980-07-31 | Rolf Dipl-Ing Benz | Support for long beams in a head fork |
GB2107776A (en) * | 1981-09-23 | 1983-05-05 | Rapid Metal Developments Ltd | Formwork support device for use in a construction system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7472878B2 (en) | 2003-11-03 | 2009-01-06 | Peri Gmbh | Lowering device comprising a support structure |
WO2008061501A1 (en) * | 2006-11-23 | 2008-05-29 | Peri Gmbh | Prop head for ceiling formwork |
US8262056B2 (en) | 2006-11-23 | 2012-09-11 | Peri Gmbh | Prop head for ceiling formwork |
Also Published As
Publication number | Publication date |
---|---|
DK130688D0 (en) | 1988-03-10 |
DK170706B1 (en) | 1995-12-11 |
DE3874172T2 (en) | 1993-03-18 |
FR2612534A1 (en) | 1988-09-23 |
EP0283391A3 (en) | 1989-11-23 |
ES2035327T3 (en) | 1993-04-16 |
ATE80195T1 (en) | 1992-09-15 |
EP0283391B1 (en) | 1992-09-02 |
FR2612534B1 (en) | 1989-07-07 |
DK130688A (en) | 1988-09-18 |
DE3874172D1 (en) | 1992-10-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2435293B1 (en) | Structure for transporting, installing and dismantling a rig deck and method for trasnporting, installing and dismantling said deck | |
EP3645365B1 (en) | Method for loading/unloading a road semi-trailer on a pocket wagon and a pocket wagon suitable for this method | |
EP2430240A1 (en) | Improved temporary bridge | |
EP1561708B1 (en) | Demountable modular platform for a refuse dump | |
WO2007012757A1 (en) | System for transporting a span on a road vehicle capable of being transformed into an amphibious vehicle enabling the crossing of a dry or water-filled gap by any road vehicle | |
FR2523627A1 (en) | METHOD FOR CONFORTING ARCHES OR SIMILAR CONSTRUCTIONS | |
EP0283391B1 (en) | Method for the realisation of concrete structures such as bridge decks, and arrangement for its application | |
EP0862675A1 (en) | Device for lifting a framework and any construction supported thereon | |
FR2487410A1 (en) | Climbing shutter for casting concrete wall - has single jack to raise brackets retaining shutter sections on shoes detachably fixed to wall | |
WO2005012644A1 (en) | Modular metal bridge and method for production thereof | |
FR2476532A2 (en) | METHOD AND DEVICE FOR MANUFACTURING CONCRETE PRODUCTS | |
EP0388281B1 (en) | Method of mounting floors in an annular structure of which concrete walls are erected with a continuous climbing form; continuous climbing form for executing the method | |
CH663780A5 (en) | DYNAMIC STORAGE FACILITY, ESPECIALLY FOR FRAGILE PRODUCTS SUCH AS CHEESES. | |
WO2002035006A1 (en) | Module for modular bridge and method for mounting such a bridge | |
EP0094465A1 (en) | Premanufacturing process for construction panels, panels so produced and plant for putting this process into operation | |
FR2483306A1 (en) | Mould for concrete rails - has long trough section moulds stripped by lifting rail end so that soffit is progressively prised from mould invert | |
FR2731998A1 (en) | METHOD AND DEVICE FOR ENHANCING A PORTABLE CONTAINER TYPE PORT | |
FR2514735A1 (en) | Feed for loading pallets - has individual pallets fed to loading station for layered loads | |
EP0342090A1 (en) | Prestressed semi-finished concrete element and production equipment | |
EP0495724B1 (en) | Method for vibrating concrete, while being poured | |
FR2636361A1 (en) | Method for producing a formwork; material and anchoring member for the implementation of this method | |
FR2893332A1 (en) | Modular bridge with metal deck has prefabricated structure of I-section beams connected by transverse pivoted brackets that are deployed in situ and locked | |
BE829490A (en) | FOLDING METAL LADDER FORMING TRAY | |
BE507168A (en) | ||
FR2676478A1 (en) | METHOD FOR THE CONSTRUCTION OF WORKS SUCH AS BRIDGES AND ARTICLES THUS OBTAINED |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19900515 |
|
17Q | First examination report despatched |
Effective date: 19910208 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19920902 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19920902 |
|
REF | Corresponds to: |
Ref document number: 80195 Country of ref document: AT Date of ref document: 19920915 Kind code of ref document: T |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: CAMPENON BERNARD SGE |
|
REF | Corresponds to: |
Ref document number: 3874172 Country of ref document: DE Date of ref document: 19921008 |
|
ITF | It: translation for a ep patent filed |
Owner name: STUDIO CONS. BREVETTUAL |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2035327 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
EPTA | Lu: last paid annual fee | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19970121 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19970224 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19970304 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 19970314 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19970318 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 19970320 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19970326 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19970331 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19970410 Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980311 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980311 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980311 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980312 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980331 Ref country code: FR Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19980331 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980331 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980331 |
|
BERE | Be: lapsed |
Owner name: CAMPENON BERNARD BTP Effective date: 19980331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19981001 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19980311 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 19981001 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19981201 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20000403 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050311 |