EP0172093A1 - Structural elements of compressed concrete, and apparatus for making them - Google Patents

Structural elements of compressed concrete, and apparatus for making them Download PDF

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Publication number
EP0172093A1
EP0172093A1 EP85401541A EP85401541A EP0172093A1 EP 0172093 A1 EP0172093 A1 EP 0172093A1 EP 85401541 A EP85401541 A EP 85401541A EP 85401541 A EP85401541 A EP 85401541A EP 0172093 A1 EP0172093 A1 EP 0172093A1
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EP
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Prior art keywords
concrete
structural elements
hoop
elements according
concrete structural
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EP85401541A
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German (de)
French (fr)
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EP0172093B1 (en
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Pierre Richard
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Bouygues SA
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Bouygues SA
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Priority claimed from FR8411987A external-priority patent/FR2568292B1/en
Priority claimed from FR8411988A external-priority patent/FR2568166B2/en
Application filed by Bouygues SA filed Critical Bouygues SA
Priority to AT85401541T priority Critical patent/ATE47349T1/en
Publication of EP0172093A1 publication Critical patent/EP0172093A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
    • B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

L'invention concerne des éléments de structure en béton comprimé et un dispositif pour les fabriquer. Le béton est moulé dans une frette tubuiaire 1 formée de fils croisés qui sont bloqués les uns par rapport aux autres au moins aux extrémités de la freete tubulaire. L'invention s'applique notamment à la réalisation de poutres, de poteaux et de câbles en béton.The invention relates to structural elements of compressed concrete and a device for manufacturing them. The concrete is molded in a tubular hoop 1 formed of crossed wires which are blocked with respect to each other at least at the ends of the tubular freete. The invention is particularly applicable to the production of concrete beams, posts and cables.

Description

L'invention concerne des éléments de structure en béton ayant un taux de travail admissible très élevé, disons d'au moins 50-100 MPa (mégapascals).The invention relates to concrete structural elements having a very high permissible working rate, say at least 50-100 MPa (megapascals).

On connaît (publications EP-A-0129480, FR-A-2 547 526 et US 4 529 567) une technique de fabrication d'éléments de structure en béton ayant un taux de travail admissible dans la gamme 50-100 MPa (Mégapascals) ou supérieur, dans laquelle on comprime le béton axialement avant sa prise avec une pression de la gamme 50-150 MPa, dans un tube entouré d'une frette constituée de deux enroulements hélicoidaux autour du tube, ces deux enroulements ayant des sens d'enroulement inverse l'un de l'autre et des extrémités fixes.We know (publications EP-A-0129480, FR-A-2 547 526 and US 4 529 567) a technique for manufacturing concrete structural elements having an acceptable working rate in the range 50-100 MPa (Megapascals) or higher, in which the concrete is compressed axially before setting with a pressure in the range 50-150 MPa, in a tube surrounded by a hoop consisting of two helical windings around the tube, these two windings having winding directions reverse each other and fixed ends.

Le tube et la frette restent solidaires de l'élément en béton comprimé obtenu et il est donc très important que ce tube et cette frette soient aussi peu coûteux que possible.The tube and the hoop remain integral with the compressed concrete element obtained and it is therefore very important that this tube and this hoop be as inexpensive as possible.

Selon la présente invention, on utilise une frette constituée par une gaine tubulaire de fils croisés bloqués mutuellement au moins aux extrémités de la gaine.According to the present invention, a hoop is used consisting of a tubular sheath of crossed wires mutually blocked at least at the ends of the sheath.

Cette frette et le tube peuvent venir ensemble de fabrication.This hoop and the tube can come together from manufacturing.

Deux réalisations sont particulièrement avantageuses, l'une dans laquelle la frette est constituée par des nappes incluses dans une résine synthétique durcie, l'ensemble des nappes et de la résine durcie constituant le tube, et l'autre dans laquelle la frette est un produit tricoté qui constitue à la fois la frette et le tube.Two embodiments are particularly advantageous, one in which the hoop is formed by plies included in a hardened synthetic resin, all the plies and hardened resin constituting the tube, and the other in which the hoop is a product. knitted fabric which constitutes both the hoop and the tube.

On décrira ci-après des exemples de réalisation conforme à l'invention, en référence aux figures schématiques du dessin joint sur lequel :

  • - la figure 1 est une coupe axiale d'un dispositif utilisable pour la fabrication d'un élément en béton ;
  • - la figure 2 est une vue de détail partielle d'une frette selon l'invention ;
  • - la figure 3 est une vue de détail partielle d'une variante de frette ;
  • - la figure 4 est une vue de détail partielle d'une autre variante de frette ;
  • - la figure 5 est une vue de l'élément obtenu au moyen du dispositif de la figure 1, et
  • - la figure 6 est une vue d'un câble en béton constitué d'éléments conformes à l'invention.
Examples of embodiments in accordance with the invention will be described below, with reference to the schematic figures of the attached drawing in which:
  • - Figure 1 is an axial section of a device used for the manufacture of a concrete element;
  • - Figure 2 is a partial detail view of a hoop according to the invention;
  • - Figure 3 is a partial detail view of a variant hoop;
  • - Figure 4 is a partial detail view of another variant of the hoop;
  • FIG. 5 is a view of the element obtained by means of the device in FIG. 1, and
  • - Figure 6 is a view of a concrete cable consisting of elements according to the invention.

Le dispositif représenté sur la figure 1 comprend un moule tubulaire 1 à remplir de béton et des moyens de compression pour exercer une compression axiale sur le béton avant que le béton soit pris. Ces moyens de pression comprennent par exemple deux plaques de pression 2,2' situées aux extrémités du moule et des moyens pour pousser ou tracter ces plaques l'une vers l'autre. Ces moyens sont par exemple un ou deux vérins 3,3'. Dans une réalisation simple, l'une des plaques est maintenue fixe et l'autre plaque est poussée ou tractée vers la plaque fixe. Il est commode d'utiliser un câble 4 pour tirer les plaques l'une vers l'autre sous l'action des vérins.The device shown in FIG. 1 comprises a tubular mold 1 to be filled with concrete and compression means for exerting axial compression on the concrete before the concrete is set. These pressure means comprise for example two pressure plates 2,2 ′ situated at the ends of the mold and means for pushing or pulling these plates towards one another. These means are for example one or two cylinders 3.3 ′. In a simple embodiment, one of the plates is kept fixed and the other plate is pushed or pulled towards the fixed plate. It is convenient to use a cable 4 to pull the plates towards each other under the action of the jacks.

De préférence, un ou plusieurs tubes longitudinaux 5 sont prévus dans le béton, par exemple pour le passage du câble 4, pour le drainage de l'eau du béton ou pour d'autres usages.Preferably, one or more longitudinal tubes 5 are provided in the concrete, for example for the passage of the cable 4, for the drainage of water from the concrete or for other uses.

Selon une réalisation de l'invention, le moule 1 est constitué par des nappes croisées de fils enrobées par une résine synthétique durcie. La résine constitue un moyen pour bloquer mutuellement les fils des nappes. Sur la figure 2, on a représenté schématiquement une portion d'une telle frette constituée par deux ou plusieurs nappes 6,7 croisées à environ 90° et enroulées en hélices inversées.According to one embodiment of the invention, the mold 1 is constituted by crossed plies of wires coated with a hardened synthetic resin. The resin constitutes a means for mutually blocking the strands of the plies. In Figure 2, there is shown schematically a portion of such a hoop consisting of two or more plies 6,7 crossed at about 90 ° and wound in inverted helices.

Il est aisé de fabriquer industriellement un tel moule, par exemple en utilisant les techniques de fabrication d'un tuyau en matière plastique pour haute pression (cf. par exemple la publication FR-A 2 373 386).It is easy to manufacture such a mold industrially, for example using the techniques for manufacturing a plastic pipe for high pressure (cf. for example the publication FR-A 2 373 386).

On munit la paroi du tube, de préférence lors de la fabrication, de petits percements 8 pour faciliter l'essorage du béton pendant sa mise en compression.The wall of the tube is provided, preferably during manufacture, with small holes 8 to facilitate the dewatering of the concrete during its compression.

On comprend aisément qu'un tel tube, qui constitue à la fois l'enveloppe de moulage et la frette, est beaucoup moins onéreux et beaucoup plus simple que le dispositif décrit dans les publications citées plus haut où l'on utilise un tube entouré par un premier fil de frette lui-même entouré par un deuxième fil de frette.It is easily understood that such a tube, which constitutes both the molding envelope and the hoop, is much less expensive and much simpler than the device described in the publications cited above where a tube surrounded by a first fret wire itself surrounded by a second fret wire.

De plus, la résine constitue une première protection de. la frette.In addition, the resin constitutes a first protection of. the fret.

Il est connu de couler du béton dans un moule en matière plastique renforcée (DE-A-2 300 209) mais cette technique connue ne prévoit pas l'utilisation d'un moule tubulaire, ni l'utilisation d'une frette, ni l'utilisation d'une compression axiale.It is known to pour concrete into a reinforced plastic mold (DE-A-2 300 209) but this known technique does not provide for the use of a tubular mold, the use of a hoop, nor the use of axial compression.

Dans une autre réalisation conforme à l'invention, la frette est une tresse cylindrique. Sur la figure 3, on a représenté schématiquement une portion d'une telle frette constituée de deux bandes 9,10 tressés ensemble de façon à former des spires inversées croisées à environ 90° et à former des fenêtres 8 entre les rubans.In another embodiment according to the invention, the hoop is a cylindrical braid. In Figure 3, there is shown schematically a portion of such a hoop consisting of two bands 9,10 braided together so as to form inverted turns crossed at about 90 ° and to form windows 8 between the ribbons.

Les bandes sont bloquées mutuellement, au moins aux extrémités du tube, par un agent adhésif.The strips are mutually blocked, at least at the ends of the tube, by an adhesive agent.

Une telle frette présente un double avantage : la tresse constitue elle-même le tube de moulage et les fenêtres constituent les orifices d'évacuation de l'eau du béton. Cette réalisation est donc encore plus avantageuse que celle du tube en résine avec nappes incluses dans la paroi du tube.Such a hoop has a double advantage: the braid itself constitutes the molding tube and the windows constitute the orifices for discharging the water from the concrete. This embodiment is therefore even more advantageous than that of the resin tube with plies included in the wall of the tube.

Dans une réalisation particulière, chaque bande est constituée de deux rubans superposés et à chaque croisement des deux bandes, l'un des rubans d'une bande passe entre les deux rubansde l'autre bande.In a particular embodiment, each strip consists of two superimposed ribbons and at each crossing of the two strips, one of the strips of a strip passes between the two strips of the other strip.

L'invention n'est pas limitée à un angle de croisement particulier des fils,ni à un moyen particulier pour bloquer les fils les uns par rapport aux autres aux extrémités du tube ou ailleurs (colle, soudure, ancrage, etc) et n'est pas limitée aux réalisations qui ont été décrites.The invention is not limited to a particular crossing angle of the wires, nor to a particular means for blocking the wires with respect to each other at the ends of the tube or elsewhere (glue, welding, anchoring, etc.) and does not is not limited to the embodiments which have been described.

Ainsi, la figure 4 représente une variante de réalisation dans laquelle la frette est une grille constituée d'une série de fils annulaires transversaux 11 réunis par des fils longitudinaux 12, l'ensemble des fils étant bloqué par une résine (non représentée sur la figure 4).Thus, Figure 4 shows an alternative embodiment in which the hoop is a grid consisting of a series of annular transverse wires 11 joined by longitudinal wires 12, all of the wires being blocked by a resin (not shown in the figure 4).

Pour la fabrication des frettes, on utilise de préférence des fils d'acier ou de carbone, par exemple d'un diamètre de 0,1 à 0, 5nn environ ou des fibres de verre.For the manufacture of the hoops, steel or carbon wires are preferably used, for example with a diameter of approximately 0.1 to 0.5 nm or glass fibers.

Par exemple, pour fabriquer la tresse, on utilise des bandes en lamelles de fibre de carbone de 5 mm de large environ et 0,1 mm d'épaisseur tricotées ensemble pour constituer des hélices croisées à 90° laissant entre elles des fenêtres de 4x4 mm environ. distantes de 15 mm environ le long d'une hélice.For example, to make the braid, we use strips of carbon fiber strips of about 5 mm wide and 0.1 mm thick knitted together to form crossed 90 ° helices leaving between them 4x4 mm windows about. about 15mm apart along a helix.

Pour fabriquer un élément conforme à l'invention, on remplit le tube en résine ou la tresse de béton liquide et on exerce sur ce béton une compression axiale d'au moins 50 MPa avant prise du béton : les frettes s'allongent sous l'effet de la poussée du béton provoquée par la pression axiale et, après la prise du béton, les frettes tendent à revenir à leur dimension initiale créant une contrainte biaxiale transversale à l'axe du tube.To manufacture an element in accordance with the invention, the resin tube or the braid is filled with liquid concrete and an axial compression of at least 50 MPa is exerted on this concrete before setting of the concrete: the frets lengthen under the effect of the thrust of the concrete caused by the axial pressure and, after the setting of the concrete, the frets tend to return to their initial dimension creating a biaxial stress transverse to the axis of the tube.

Etant donné que le moule utilisé pour la fabrication des éléments est un moule qui reste incorporé à l'élément moulé, il est particulièrement important que le coût de fabrication de ce moule soit aussi réduit que possible, ce que réalise la présente invention.Since the mold used for the manufacture of the elements is a mold which remains incorporated in the molded element, it is particularly important that the cost of manufacturing this mold is as low as possible, which is achieved by the present invention.

Les produits moulés sont notamment caractérisés par le fait que le béton constitue une masse comprimée entourée d'une frette constituée par une gaine tubulaire 1 de fils croisés, notamment telle que décrit ci-dessus en référence aux figures 2 à 4, qui exerce sur le béton une contrainte dans des plans transversaux.The molded products are notably characterized by the fact that the concrete constitutes a compressed mass surrounded by a hoop constituted by a sheath tubular 1 of crossed wires, in particular as described above with reference to FIGS. 2 to 4, which exerts a stress on the concrete in transverse planes.

Pour protéger la frette des agents extérieurs, il est prévu de l'entourer d'une gaine de protection 13 , ce qui peut être utile, même si la frette est enrobée de résine.To protect the hoop from external agents, provision is made to surround it with a protective sheath 13, which may be useful, even if the hoop is coated with resin.

Les éléments en béton fabriqués selon l'invention sont utiles comme barres, poutres et autres éléments de structure rigides, mais une application particulièrement intéressante de l'invention est la fabrication de câbles en béton.The concrete elements produced according to the invention are useful as bars, beams and other rigid structural elements, but a particularly advantageous application of the invention is the manufacture of concrete cables.

Selon l'invention, on constitue le câble (figure 6) en disposant en ligne des tronçons de câble M moulés conformément à l'invention et en assemblant ces tronçons par un câble de précontrainte commun qui traverse longitudinalement l'ensemble des tronçons. Avantageusement, on utilise le même câble que celui qui a servi à réaliser la compression du béton dans le tube avant sa prise et qui passe dans les tubes 4.According to the invention, the cable is formed (Figure 6) by arranging in line cable sections M molded in accordance with the invention and by assembling these sections by a common prestressing cable which passes longitudinally through all of the sections. Advantageously, the same cable is used as that used to compress the concrete in the tube before it sets and which passes through the tubes 4.

On a déjà décrit la formation d'un câble par assemblage de tronçons de câble en béton (FR-A-2 484 355, FR-2 535 281) mais la fabrication des tronçons et leur assemblage sont très différents de ceux de la présente invention.We have already described the formation of a cable by assembling sections of concrete cable (FR-A-2 484 355, FR-2 535 281) but the manufacture of the sections and their assembly are very different from those of the present invention. .

Le câble de précontrainte commun peut avantageusement être en fibres de carbone enrobées de résine synthétique durcie.The common prestressing cable can advantageously be made of carbon fibers coated with hardened synthetic resin.

Dans une réalisation typique, le câble en béton a un diamètre de 15 à 20 cm, éventuellement davantage.In a typical embodiment, the concrete cable has a diameter of 15 to 20 cm, possibly more.

Il est prévu notamment de réaliser ainsi des câbles de plusieurs kilomètres de long avec des tronçons de câble de l'ordre de 10 à 15 mètres.In particular, it is planned to make cables several kilometers long with cable sections of the order of 10 to 15 meters.

L'invention permet notamment de fabriquer un câble en béton pour réaliser des lignes d'ancrage, des haubans et des câbles porteurs de pont.The invention makes it possible in particular to manufacture a concrete cable for making anchor lines, stay cables and bridge carrying cables.

Il est connu de réaliser des lignes d'ancrage, notamment pour des plates-formes en mer, au moyen de tubes d'acier, ayant un diamètre de l'ordre de 40 à 60 cm et une épaisseur de paroi de 2 à 3 cm, qui sont constitués à partir de tronçons de tubes soudés ou liés mécaniquement et enroulés sur un touret.It is known to produce anchor lines, in particular for offshore platforms, by means of steel tubes, having a diameter of the order of 40 to 60 cm and a wall thickness of 2 to 3 cm. , which consist of sections of tubes welded or mechanically linked and wound on a reel.

La présente invention permet de remplacer ces tubes pardes éléments en béton qui, pour des performances au moins équivalentes, peuvent avoir une section beaucoup plus faible, un poids sensiblement plus léger,et ne nécessitent plus d'être assemblés par soudage ou mécaniquement.The present invention makes it possible to replace these tubes with concrete elements which, for at least equivalent performance, can have a much smaller section, a substantially lighter weight, and no longer need to be assembled by welding or mechanically.

En outre, les câbles de la présente invention, en raison de leur plus faible diamètre, présentent une prise à la houle beaucoup plus faible que celle des tubes en acier. Enfin, ces câbles sont beaucoup moins sensibles à la corrosion que les câbles en acier.In addition, the cables of the present invention, due to their smaller diameter, have a much weaker wave grip than that of steel tubes. Finally, these cables are much less susceptible to corrosion than steel cables.

Bien entendu, les tronçons de câble M peuvent être séparés par des éléments intermédiaires mais tout en restant assemblés par le câble de précontrainte d'ensemble.Of course, the cable sections M can be separated by intermediate elements but while remaining assembled by the overall prestressing cable.

Claims (16)

1. Eléments de structure en béton comprenant un bloc de béton comprimé entouré par une frette tubulaire qui exerce sur le béton un effet de compression dans des plans transversaux, cette frette étant faite de fils qui sont mutuellement bloqués au moins aux extrémités de la frette tubulaire, caractérisés en ce que les fils de la frette sont croisés.1. Concrete structural elements comprising a block of compressed concrete surrounded by a tubular hoop which exerts on the concrete a compression effect in transverse planes, this hoop being made of wires which are mutually blocked at least at the ends of the tubular hoop , characterized in that the wires of the hoop are crossed. 2. Eléments de structure en béton selon la revendication 1, caractérisés en ce que les fils de la frette constituent des nappes (6,7) incluses dans une résine synthétique.2. Concrete structural elements according to claim 1, characterized in that the wires of the hoop constitute plies (6,7) included in a synthetic resin. 3. Eléments de structure en béton selon la revendication 2, caractérisés en ce que la résine synthétique est durcie.3. Concrete structural elements according to claim 2, characterized in that the synthetic resin is cured. 4. Eléments de structure en béton selon la revendication 2 ou 3, caractérisés en ce que les nappes (6,7) constituent au moins deux enroulements hélicoidaux dont les directions d'enroulement sont inverses.4. Concrete structural elements according to claim 2 or 3, characterized in that the plies (6,7) constitute at least two helical windings whose winding directions are opposite. 5. Eléments de structure en béton selon la revendication 4, caractérisés en ce que les nappes se croisent à environ 90°.5. Concrete structural elements according to claim 4, characterized in that the plies intersect at approximately 90 °. 6. Eléments de structure en béton selon la revendication 1, caractérisés en ce que les fils de la frette constituent une tresse tubulaire (9,10).6. Concrete structural elements according to claim 1, characterized in that the wires of the hoop constitute a tubular braid (9,10). 7. Eléments de structure en béton selon la revendication 6, caractérisés en ce que la tresse est faite de bandes (9,10) qui sont tissées ensemble de façon à réaliser des hélices dont les sens d'enroulement sont inversés.7. Concrete structural elements according to claim 6, characterized in that the braid is made of strips (9,10) which are woven together so as to produce helices whose winding directions are reversed. 8. Eléments de structure en béton selon la revendication 7, caractérisés en ce que les bandes (9,10) se croisent à environ 90°.8. Concrete structural elements according to claim 7, characterized in that the strips (9,10) intersect at about 90 °. 9. Eléments de structure en béton selon l'une des revendications 7 et 8, caractérisés en ce que chaque bande est constituée de deux rubans superposés et en ce qu'à chaque croisement des deux bandes l'un des rubans d'une bande passe entre les deux rubans de l'autre bande.9. Concrete structural elements according to one of claims 7 and 8, characterized in that each strip consists of two superposed tapes and in that at each crossing of the two strips one of the tapes of a pass band between the two ribbons of the other strip. 10. Eléments de structure en béton selon l'une des revendications 7 à 9, caractérisés en ce que les bandes (9,10) sont faites de fibres de carbone.10. Concrete structural elements according to one of claims 7 to 9, characterized in that the strips (9,10) are made of carbon fibers. 11. Eléments de structure en béton selon la revendication 1, caractérisés en ce que la frette est une grille faite d'une pluralité de fils annulaires (11) disposés dans des plans transversaux superposés et croisés par des fils longitudinaux(12).11. Concrete structural elements according to claim 1, characterized in that the hoop is a grid made of a plurality of annular wires (11) arranged in superimposed transverse planes and crossed by longitudinal wires (12). 12. Eléments de structure en béton selon l'une quelconque des revendications précédentes, caractérisés en ce que la frette est entourée par une gaine de protection (13).12. Concrete structural elements according to any one of the preceding claims, characterized in that the hoop is surrounded by a protective sheath (13). 13. Eléments de structure en béton selon l'une quelconque des revendications précédentes, caractérisés en ce que le bloc en béton comprend au moins un passage longitudinal (5).13. Concrete structural elements according to any one of the preceding claims, characterized in that the concrete block comprises at least one longitudinal passage (5). 14. Eléments de structure en béton selon la revendication 13, caractérisés en ce qu'ils sont disposés suivant une ligne et assemblés par au moins un câble de précontrainte commun (4) passant dans lesdits passages (5) des éléments, l'ensemble constituant un câble en béton.14. Concrete structural elements according to claim 13, characterized in that they are arranged in a line and assembled by at least one common prestressing cable (4) passing through said passages (5) of the elements, the assembly constituting a concrete cable. 15. Eléments de structure en béton selon la revendication 14, caractérisés en ce que ledit câble de précontrainte (4) est fait de fibres de carbone incorporées dans une résine synthétique durcie.15. Concrete structural elements according to claim 14, characterized in that said prestressing cable (4) is made of carbon fibers incorporated in a hardened synthetic resin. 16. Dispositif pour fabriquer un élément de structure en béton selon l'une quelconque des revendications 1 à 15 qui comprend un moule tubulaire à remplir avec le béton et des moyens pour comprimer axialement le béton dans le moule avant que le béton soit pris, ce moule comprenant une frette tubulaire, caractérisé en ce que la frette est telle que définie dans l'une quelconque des revendication 1 à 15.16. Device for manufacturing a concrete structural element according to any one of claims 1 to 15 which comprises a tubular mold to be filled with concrete and means for axially compressing the concrete in the mold before the concrete is set, this mold comprising a tubular hoop, characterized in that the hoop is as defined in any one of claims 1 to 15.
EP85401541A 1984-07-27 1985-07-26 Structural elements of compressed concrete, and apparatus for making them Expired EP0172093B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85401541T ATE47349T1 (en) 1984-07-27 1985-07-26 STRUCTURAL ELEMENTS OF COMPRESSED CONCRETE AND DEVICE FOR THEIR MANUFACTURE.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8411987A FR2568292B1 (en) 1984-07-27 1984-07-27 CONCRETE CABLE AND METHOD AND DEVICE FOR MAKING SAME
FR8411988 1984-07-27
FR8411987 1984-07-27
FR8411988A FR2568166B2 (en) 1984-07-27 1984-07-27 DEVICE FOR MANUFACTURING RECTILLINED CONCRETE STRUCTURAL ELEMENTS HAVING A HIGH ELIGIBLE WORKING RATE

Publications (2)

Publication Number Publication Date
EP0172093A1 true EP0172093A1 (en) 1986-02-19
EP0172093B1 EP0172093B1 (en) 1989-10-18

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EP85401541A Expired EP0172093B1 (en) 1984-07-27 1985-07-26 Structural elements of compressed concrete, and apparatus for making them

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US (1) US4694622A (en)
EP (1) EP0172093B1 (en)
KR (1) KR890001989B1 (en)
CA (1) CA1259814A (en)
DE (1) DE3573750D1 (en)
HK (1) HK56290A (en)
SG (1) SG40090G (en)

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EP0572243A1 (en) * 1992-05-29 1993-12-01 Tonen Corporation Reinforced concrete (electric) mast/pylon and method of repairing with fiber reinforced composite sheets
US5542229A (en) * 1993-05-14 1996-08-06 Tonen Corporation Concrete pole and method of reinforcing same
US8386009B2 (en) 2006-06-08 2013-02-26 Suunto Oy Sensor arrangement
US10228081B2 (en) 2012-11-16 2019-03-12 Kongsberg Actuation Systems Ii, Inc. Method of forming a hose assembly

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JPH01256651A (en) * 1988-04-01 1989-10-13 Shimizu Corp Steel pipe concrete pillar structure and construction thereof
US4936006A (en) * 1989-03-01 1990-06-26 General Atomics Method of making prestressed concrete articles
US5065795A (en) * 1989-03-01 1991-11-19 General Atomics Prestressed concrete articles
US5457929A (en) * 1989-11-02 1995-10-17 Kim; Joong S. Structural member with a metal shell
US5263297A (en) * 1989-11-02 1993-11-23 Kim Joong S Structural member with a metal shell
US5613334A (en) * 1994-12-15 1997-03-25 Cornell Research Foundation, Inc. Laminated composite reinforcing bar and method of manufacture
US6295782B1 (en) * 1999-06-11 2001-10-02 Edward Robert Fyfe Stay-in-place form
US6872030B2 (en) * 2002-01-25 2005-03-29 North Pacific Group, Inc. Wood support piling with composite wrappings and method for reinforcing the same
US6964809B2 (en) * 2002-02-15 2005-11-15 Pedro M. Buarque de Macedo Large high density foam glass tile
US7311965B2 (en) * 2003-07-22 2007-12-25 Pedro M. Buarque de Macedo Strong, high density foam glass tile having a small pore size
US8453400B2 (en) * 2003-07-22 2013-06-04 Pedro M. Buarque de Macedo Prestressed, strong foam glass tiles
US7695560B1 (en) 2005-12-01 2010-04-13 Buarque De Macedo Pedro M Strong, lower density composite concrete building material with foam glass aggregate
DE102006047460A1 (en) * 2006-10-07 2008-04-10 Andreas Kufferath Gmbh & Co. Kg Reinforcing device for use with components made of castable, hardening materials, such as concrete materials, and components produced therewith
SE533634C2 (en) * 2008-06-30 2010-11-16 Bo Blomqvist Cheese composite mast
US20110239564A1 (en) * 2011-04-15 2011-10-06 General Electric Company Apparatus, Composite Section, and Method for On-Site Tower Formation
KR101158522B1 (en) * 2011-11-30 2012-06-21 한국건설기술연구원 Concrete filled tube of non-welding using slot
US11718965B2 (en) 2016-07-28 2023-08-08 Carboshield, Inc. Apparatus and method for reinforcing a partially submerged structural element
US11118364B2 (en) * 2016-07-28 2021-09-14 Carboshield, Inc. Structural element reinforcement systems and methods
AT520386B1 (en) * 2017-08-24 2019-10-15 Univ Wien Tech Method of making an integral bridge and integral bridge
US11619047B2 (en) * 2019-08-19 2023-04-04 Raymond Alan Low Braided multi-axial sleeve system used as a structural reinforcement for concrete columns and method for constructing concrete columns
US11859386B2 (en) * 2019-08-19 2024-01-02 Raymond Alan Low Cable-supported structural assembly with flexible reinforced concrete structural element
US11408176B2 (en) * 2019-08-19 2022-08-09 Raymond Alan Low Multi-axially braided reinforcement sleeve for concrete columns and method for constructing concrete columns

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FR2373386A1 (en) * 1976-12-09 1978-07-07 Kuraray Plastics Co PROCESS AND APPARATUS FOR REALIZING FIBER-ARMED FLEXIBLE TUBES RESISTANT TO PRESSURE
FR2480327A1 (en) * 1980-04-11 1981-10-16 Ritter Mario Tensioning of prefabricated resilient construction elements - has rod threaded through elements and stop pulling elements into compression
FR2484355A1 (en) * 1980-06-12 1981-12-18 Precontrainte Structures Ste F Under-water anchor stay - comprises prestressed concrete tie beam with end hinges and adjustable length rope
EP0129480A1 (en) * 1983-06-17 1984-12-27 Bouygues Method and apparatus for making concrete structural elements, and elements made in this manner

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0572243A1 (en) * 1992-05-29 1993-12-01 Tonen Corporation Reinforced concrete (electric) mast/pylon and method of repairing with fiber reinforced composite sheets
US5542229A (en) * 1993-05-14 1996-08-06 Tonen Corporation Concrete pole and method of reinforcing same
US8386009B2 (en) 2006-06-08 2013-02-26 Suunto Oy Sensor arrangement
US10228081B2 (en) 2012-11-16 2019-03-12 Kongsberg Actuation Systems Ii, Inc. Method of forming a hose assembly
US10281064B2 (en) 2012-11-16 2019-05-07 Kongsberg Actuation Systems Ii, Inc. Method of forming a hose assembly

Also Published As

Publication number Publication date
US4694622A (en) 1987-09-22
KR890001989B1 (en) 1989-06-07
DE3573750D1 (en) 1989-11-23
EP0172093B1 (en) 1989-10-18
HK56290A (en) 1990-08-03
CA1259814A (en) 1989-09-26
SG40090G (en) 1990-11-23
KR860000939A (en) 1986-02-20

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