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EP0803612B1 - One piece moulded concrete shielding block, mould for obtaining such a block - Google Patents

One piece moulded concrete shielding block, mould for obtaining such a block Download PDF

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Publication number
EP0803612B1
EP0803612B1 EP97400883A EP97400883A EP0803612B1 EP 0803612 B1 EP0803612 B1 EP 0803612B1 EP 97400883 A EP97400883 A EP 97400883A EP 97400883 A EP97400883 A EP 97400883A EP 0803612 B1 EP0803612 B1 EP 0803612B1
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EP
European Patent Office
Prior art keywords
block
indentations
protuberances
blocks
smooth
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.)
Expired - Lifetime
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EP97400883A
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German (de)
French (fr)
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EP0803612A1 (en
Inventor
Michel Denechere
Louis Sanchez
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Societe Grenobloise dEtudes et dApplications Hydrauliques SA SOGREAH
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Societe Grenobloise dEtudes et dApplications Hydrauliques SA SOGREAH
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Publication of EP0803612A1 publication Critical patent/EP0803612A1/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/129Polyhedrons, tetrapods or similar bodies, whether or not threaded on strings

Definitions

  • the invention relates to a concrete shell block one-piece molded structure for protecting structures sea and river against waves and currents, and a mold for the production of such a block.
  • block designers are to decrease the volume of concrete necessary for a given shell while having stability and robustness in accordance with their use. For it designers play on the dimensions and angles of component parts of the block in order to increase the volume of empty spaces between nested blocks.
  • the resulting blocks give a saving result of significant concrete. However they are less robust and therefore, ultimately, it may appear in the shell a resulting recovery failure, due to broken blocks tamping, exposing part of the works maritime and fluvial and which can be at the origin of damage.
  • NL-A-8903138 relates to a concrete shell block mold.
  • the purpose of this document is to compensate for the fragility of the blocks by a device aimed at decrease the maximum collision force exerted on a block by the other blocks surrounding it.
  • the proposed solution is to provide the block of shell made of molded concrete with a surface layer, asphalt, rubber, or cement-rubber composite, less rigid than the shell block. Thus the shocks between blocks are absorbed.
  • this surface layer can advantageously, and for the same purpose, present protrusions or edges made of wood, rubber or concrete to make the surface layer less rigid than the block it covers.
  • the axis of reflection that led to the present invention is very different. It is based on a significant improvement of the hanging of the blocks together so as to improve the hydraulic coefficient of the shell and therefore limit the movements and shocks between blocks.
  • One of the aims of the present invention is therefore to keep the optimal dimensional ratios of the blocks existing and make a relief on the block surfaces irregular accident, without influence on the resistance structural, constituting a plurality of asperities. So, without weakening the structural strength of the blocks, we obtains an isotropic improvement in attachment.
  • One-piece molded concrete shell blocks must have a smooth outer skin from molding, with possibly, as in NL-A-8903138 a layer superficial added.
  • the invention therefore relates to a concrete shell block one-piece molded structure for protecting structures maritime and inland waterways with a shaped outer surface general defining a smooth polyhedron.
  • a concrete shell block one-piece molded structure for protecting structures maritime and inland waterways with a shaped outer surface general defining a smooth polyhedron.
  • the invention in minus part of the outer surface of the block present protrusions and / or grooves molded in the mass of the block, protrusions and / or grooves having faces in secant planes at the general local level of the smooth polyhedron, these protrusions and / or grooves together forming an irregular hilly relief.
  • the irregular uneven relief increases the blocking coefficient between blocks in all directions (isotropic), and therefore to raise the coefficient of hydraulic stability.
  • the hanging coefficient being increased, the elementary inertia of the block (mass of concrete for a block) can be reduced, the decrease in the mass of each block being compensated by the best attachment between blocks. This saves concrete on completion of a given shell surface.
  • the faces of the protrusions and / or grooves are as many secondary plans of different orientations which increase the possibilities of plan-to-plan contact stabilized between blocks with respect to the smooth surfaces of prior art.
  • the invention relates to a shell block in one-piece molded concrete having protuberances and / or grooves, coming from molding, arranged in a place having a given geomorphism.
  • the protrusions and / or grooves, originating from molding have a general geomorphism substantially equivalent to geomorphism roughness of the place considered.
  • the block having this characteristic has for advantage of replacing natural riprap without deteriorating the site, and by limiting the constraints linked to the supply and delivery of natural riprap to the site.
  • the concrete constituting the block may be colored in the tones of the geological environment of the place considered.
  • the invention also relates to a mold for making a block according to the invention.
  • Figures 1A to 1C are schematic views of a block according to the invention.
  • Figures 2A to 2D are schematic views of a exemplary embodiment of a block according to the invention with granitic geomorphism.
  • Figures 3A to 3D are schematic views of a exemplary embodiment of a block according to the invention with basalt geomorphism.
  • the blocks offered as an example are blocks having for smooth polyhedron the shape of the blocks from US-A-4347017 however these examples intended to illustrate the description are in no way limitative of the basic type of blocks according to the invention.
  • the invention relates to a concrete shell block 1 one-piece molded structure for protecting structures maritime and fluvial.
  • This block 1 is made up of legs 2 arranged together according to angles and inter-leg deviations given.
  • This block 1 has an outer surface 6 of general profile defining a smooth polyhedron 3.
  • smooth polyhedron 3 the smoothed surface of the exterior profile of the block. In art anterior this smooth polyhedron corresponds to the surface gross external formwork release.
  • At least part of the surface exterior 6 presents, with respect to the smooth polyhedron 3, protrusions 4 and / or grooves 5 from molding.
  • the smooth polyhedron 3 of block 1 is imaginary polyhedron corresponding to the surface exterior of an equivalent block which would have been sunk in a smooth mold.
  • the protrusions 4 and / or the grooves 5 are due to grooves and / or protrusions voluntarily made in the mold (not shown) of block 1.
  • the mold (not shown) can be the smooth mold of the equivalent smooth-skin block in which have been added protruding elements comprising or generating between them grooves, so that when the concrete is poured into the mold, it results, in positive, grooves 5 and protrusions 4 on block 1.
  • the volume elementary concrete necessary for the realization of a block 1 according to the invention is reduced in volume of the elements protuberants added to the mold, these elements protuberants creating on the block 1 grooves 5 and protuberances 4 coming, due to the increase in attachment coefficient, compensate for the mass defect elementary of block 1 compared to its smooth equivalent.
  • protrusions 4 and / or grooves 5 have constituent faces in secant planes at the local plane of smooth polyhedron and together form an uneven relief irregular. This therefore considerably increases the number of planes in which nested blocks 1 are likely to find themselves in stabilized support. The resulting overlap presents void spaces more inter-block than with smooth skin blocks while preserving the group effect of the shell.
  • Figures 2A-2D and 3A-3D show two examples of blocks according to the invention on which the protrusions 4 and / or the gorges 5 have a similar geomorphism with respectively a granite site and a basalt site.
  • the blocks according to the invention are integrated into their deposit site without misrepresenting it.
  • the geomorphic block can be advantageously dyed in the mass in a tone similar to the geological colors of the site in which it is deposited.
  • the mold according to the present invention can be a rehabilitated smooth mold.
  • the realization of such rehabilitated mold can include the following steps:
  • the smooth block is coated with a thickness of easily shaped material in which the protuberances and the grooves; then we maintain the block with an outer layer shaped centered in the mold and a material is poured moldable between the shaped outer layer block and the smooth mold wall.
  • a block molding is thus obtained reproducible, and perfectly integrated in molds smooth to rehabilitate.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Revetment (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Road Paving Structures (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Retaining Walls (AREA)

Description

L'invention concerne un bloc de carapace en béton moulé monobloc pour structure de protection des ouvrages maritimes et fluviaux contre les vagues et les courants, et un moule pour la réalisation d'un tel bloc.The invention relates to a concrete shell block one-piece molded structure for protecting structures sea and river against waves and currents, and a mold for the production of such a block.

Les caractéristiques techniques recherchées en matière de blocs artificiels sont d'une part la stabilité hydraulique et d'autre part la robustesse.The technical characteristics sought in terms of of artificial blocks are on the one hand the stability hydraulic and on the other hand robustness.

Outre ces caractéristiques techniques, le but des concepteurs de blocs est de diminuer le volume de béton nécessaire pour une carapace donnée tout ayant une stabilité et une robustesse en accord avec leur utilisation. Pour cela les concepteurs jouent sur les dimensions, et les angles des parties constitutives du bloc afin d'augmenter le volume des espaces vides entre blocs imbriqués.In addition to these technical characteristics, the purpose of block designers is to decrease the volume of concrete necessary for a given shell while having stability and robustness in accordance with their use. For it designers play on the dimensions and angles of component parts of the block in order to increase the volume of empty spaces between nested blocks.

La tendance des concepteurs est de modifier les dimensions et les formes générales des pattes ou enclumes constitutives du bloc de manière à générer une forte imbrication tout en ayant plus d'espaces vides dans les imbriquements de blocs. A cet égard on pourra comparer le bloc du document US-A-4347017 datant des années 80, avec le bloc plus élancé du document US-A-5441362 plus récent. En outre, dans le but de réduire le volume de béton sur chaque bloc, les formes des blocs sont élancées.The tendency of designers is to modify dimensions and general shapes of legs or anvils constitutive of the block so as to generate a strong nesting while having more empty spaces in them nested blocks. In this regard we can compare the Document block US-A-4347017 from the 80s, with the more slender block from the more recent document US-A-5441362. In in addition, in order to reduce the volume of concrete on each block, the shapes of the blocks are slender.

Cela a pour conséquence de fragiliser les pattes des blocs qui sont alors plus longilignes.This has the effect of weakening the legs of blocks which are then more elongated.

Les blocs résultant donnent un résultat d'économie de béton non négligeable. Cependant ils sont moins robuste et de ce fait, à terme, il peut apparaítre dans la carapace un défaut de recouvrement occasionnant , dû aux blocs brisés se tassant, mettant à découvert une partie des ouvrages maritimes et fluviaux et pouvant être à l'origine de dommages. The resulting blocks give a saving result of significant concrete. However they are less robust and therefore, ultimately, it may appear in the shell a resulting recovery failure, due to broken blocks tamping, exposing part of the works maritime and fluvial and which can be at the origin of damage.

NL-A-8903138 concerne un bloc de carapace en béton moulé. Le but que se propose d'atteindre ce document est de compenser la fragilité des blocs par un dispositif visant à diminuer la force de collision maximale exercée sur un bloc par les autres blocs l'entourant.NL-A-8903138 relates to a concrete shell block mold. The purpose of this document is to compensate for the fragility of the blocks by a device aimed at decrease the maximum collision force exerted on a block by the other blocks surrounding it.

La solution proposée est de pourvoir le bloc de carapace en béton moulé d'une couche superficielle, en asphalte, en caoutchouc, ou encore en composite ciment-caoutchouc, de rigidité inférieure au bloc de carapace. Ainsi les chocs entre blocs sont amortis.The proposed solution is to provide the block of shell made of molded concrete with a surface layer, asphalt, rubber, or cement-rubber composite, less rigid than the shell block. Thus the shocks between blocks are absorbed.

Il est en outre précisé que cette couche superficielle peut avantageusement, et pour le même but, présenter des saillies ou arrêtes faites de bois, de caoutchouc ou de béton pour rendre la couche superficielle moins rigide que le bloc qu'elle recouvre.It is further specified that this surface layer can advantageously, and for the same purpose, present protrusions or edges made of wood, rubber or concrete to make the surface layer less rigid than the block it covers.

Cependant, les formes de saillies et arrêtes proposées sont géométriquement régulières.However, the forms of protrusions and edges proposed are geometrically regular.

L'axe de réflexion ayant menée à la présente invention est très différent. Il repose sur une amélioration sensible de l'accrochage des bloc entre eux de manière à améliorer le coefficient hydraulique de la carapace et donc limiter les mouvements et les chocs entre blocs.The axis of reflection that led to the present invention is very different. It is based on a significant improvement of the hanging of the blocks together so as to improve the hydraulic coefficient of the shell and therefore limit the movements and shocks between blocks.

L'un des buts de la présente invention est donc de conserver les rapports dimensionnels optimaux des blocs existants et de réaliser sur les surfaces de blocs un relief accidenté irrégulier, sans influence sur la résistance structurelle, constituant une pluralité d'aspérités. Ainsi, sans affaiblir la résistance structurelle des blocs, on obtient une amélioration isotropique de l'accrochage.One of the aims of the present invention is therefore to keep the optimal dimensional ratios of the blocks existing and make a relief on the block surfaces irregular accident, without influence on the resistance structural, constituting a plurality of asperities. So, without weakening the structural strength of the blocks, we obtains an isotropic improvement in attachment.

A cet égard, la présente invention s'oppose complètement à l'idée générale selon laquelle en vue d'en faciliter la fabrication, et notamment le démoulage, les blocs de carapace en béton moulé monobloc doivent présenter une peau extérieure lisse provenant de moulage, avec éventuellement, comme dans NL-A-8903138 une couche superficielle rajoutée. In this regard, the present invention is opposed completely to the general idea that in order to facilitate manufacturing, and in particular demolding, One-piece molded concrete shell blocks must have a smooth outer skin from molding, with possibly, as in NL-A-8903138 a layer superficial added.

En outre le caractère régulier des saillies et arrêtes amortisseurs rajoutées proposées dans NL-A-8903138 va à l'opposé du caractère isotropique d'accrochage des blocs selon l'invention.In addition, the regularity of the projections and edges added shock absorbers proposed in NL-A-8903138 goes to the opposite of the isotropic blocking character of the blocks according to the invention.

l'invention concerne donc un bloc de carapace en béton moulé monobloc pour structure de protection des ouvrages maritimes et fluviaux ayant une surface extérieure de forme générale définissant un polyèdre lisse. Selon l'invention au moins une partie de la surface extérieure du bloc présente des protubérances et/ou des gorges moulés dans la masse du bloc, les protubérances et/ou les gorges présentant des faces dans des plans sécants au plan général local du polyèdre lisse, ces les protubérances et/ou les gorges formant ensemble un relief accidenté irrégulier.the invention therefore relates to a concrete shell block one-piece molded structure for protecting structures maritime and inland waterways with a shaped outer surface general defining a smooth polyhedron. According to the invention in minus part of the outer surface of the block present protrusions and / or grooves molded in the mass of the block, protrusions and / or grooves having faces in secant planes at the general local level of the smooth polyhedron, these protrusions and / or grooves together forming an irregular hilly relief.

Le relief accidenté irrégulier permet d'augmenter le coefficient d'accrochage entre blocs dans toutes les directions (isotropique), et donc d'élever le coefficient de stabilité hydraulique. Le coefficient d'accrochage étant augmenté, l'inertie élémentaire du bloc (masse de béton pour un bloc) peut être réduite, la diminution de la masse de chaque bloc étant compensé par le meilleur accrochage entre blocs. Cela permet une économie de béton sur la réalisation d'une surface donnée de carapace.The irregular uneven relief increases the blocking coefficient between blocks in all directions (isotropic), and therefore to raise the coefficient of hydraulic stability. The hanging coefficient being increased, the elementary inertia of the block (mass of concrete for a block) can be reduced, the decrease in the mass of each block being compensated by the best attachment between blocks. This saves concrete on completion of a given shell surface.

Les faces des protubérances et/ou des gorges sont autant de plans secondaires d'orientations différentes qui multiplient les possibilités de contact plan à plan stabilisé entre blocs par rapport aux surfaces lisses de l'art antérieur.The faces of the protrusions and / or grooves are as many secondary plans of different orientations which increase the possibilities of plan-to-plan contact stabilized between blocks with respect to the smooth surfaces of prior art.

La multiplication des possibilités de contact stabilisé plan à plan entre blocs induit une augmentation du volume des espaces vides inter-bloc.The multiplication of contact possibilities stabilized plane to plane between blocks induces an increase in volume of empty inter-block spaces.

En outre les protubérances et/ou gorges étant moulées dans la masse, la résistance mécanique du bloc est conservé, et les aspérités résultantes présentent une résistance au cisaillement bien supérieure à des aspérités venant en couche superficielle rapportée. In addition the protrusions and / or grooves being molded in the mass, the mechanical strength of the block is preserved, and the resulting asperities show resistance to much greater shear than roughness coming in added surface layer.

De ce fait, avec un même nombre de blocs on obtient une carapace de plus grande surface tout en conservant un effet de groupe équivalent à l'art antérieur.Therefore, with the same number of blocks we get a shell of larger surface area while retaining a group effect equivalent to the prior art.

Les critères environnementaux imposent, de plus en plus, que les ouvrages artificiels s'intègrent au mieux dans le cadre naturel du lieu où ils sont installés. A cet égard les blocs de carapace en béton moulé monobloc à peau lisse ne répondent pas à ces critères et dénaturent les sites où ils sont utilisés. Sur ces chantiers il est alors nécessaire d'utiliser des enrochements naturels issus de carrière. Or l'ouverture de carrières est, elle aussi, sévèrement réglementée et le transport d'enrochements naturels de taille adaptée est source de nuisance (circulation, bruit, pollution, mise en place d'infrastructure d'accès etc...).Environmental criteria increasingly impose more, that artificial works are best integrated into the natural setting of the place where they are installed. In this regard one-piece molded concrete shell blocks with smooth skin do not meet these criteria and distort the sites where they are used. On these sites it is then necessary to use natural riprap from quarries. Gold the opening of quarries is also severely regulated and transport of natural riprap from suitable size is a nuisance (traffic, noise, pollution, installation of access infrastructure etc ...).

C'est donc un autre but de la présente invention de proposer des blocs de carapace en béton moulé monobloc selon l'invention ayant des protubérances et/ou des gorges, provenant de moulage, de forme générale semblable à la forme générale des aspérités naturelles du type de roche du site où ils sont installés (géomorphisme).It is therefore another object of the present invention to offer one-piece molded concrete shell blocks according to the invention having protuberances and / or grooves, from molding, generally similar in shape general natural roughness of the rock type of the site where they are installed (geomorphism).

A cet effet l'invention concerne un bloc de carapace en béton moulé monobloc ayant des protubérances et/ou des gorges, provenant de moulage, disposé dans un lieu ayant un géomorphisme donné. Selon l'invention les protubérances et/ou des gorges, provenant de moulage, présentent un géomorphisme général sensiblement équivalent au géomorphisme des aspérités du lieu considéré.To this end, the invention relates to a shell block in one-piece molded concrete having protuberances and / or grooves, coming from molding, arranged in a place having a given geomorphism. According to the invention the protrusions and / or grooves, originating from molding, have a general geomorphism substantially equivalent to geomorphism roughness of the place considered.

Outre les avantages généraux des blocs selon l'invention, le bloc ayant cette caractéristique a pour avantage de remplacer l'enrochement naturel sans détériorer le site, et en limitant les contraintes liées à la fourniture et à l'acheminement des enrochements naturels vers le site.Besides the general advantages of blocks according to the invention, the block having this characteristic has for advantage of replacing natural riprap without deteriorating the site, and by limiting the constraints linked to the supply and delivery of natural riprap to the site.

Avantageusement le béton constitutif du bloc pourra être coloré dans les tons du milieu géologique du lieu considéré. Advantageously, the concrete constituting the block may be colored in the tones of the geological environment of the place considered.

L'invention concerne aussi un moule pour réaliser un bloc selon l'invention.The invention also relates to a mold for making a block according to the invention.

D'autres avantages et caractéristiques de la présente invention résulteront de la description qui va suivre en référence aux dessins annexés dans lesquels :Other advantages and features of this invention will result from the description which follows reference to the accompanying drawings in which:

Les figures 1A à 1C sont des vues schématiques d'un bloc selon l'invention.Figures 1A to 1C are schematic views of a block according to the invention.

Les figures 2A à 2D sont des vues schématiques d'un exemple de réalisation d'un bloc selon l'invention avec géomorphisme granitique.Figures 2A to 2D are schematic views of a exemplary embodiment of a block according to the invention with granitic geomorphism.

Les figures 3A à 3D sont des vues schématiques d'un exemple de réalisation d'un bloc selon l'invention avec géomorphisme basaltique.Figures 3A to 3D are schematic views of a exemplary embodiment of a block according to the invention with basalt geomorphism.

Les blocs proposés en exemple sont des blocs ayant pour polyèdre lisse la forme des blocs de US-A-4347017 cependant ces exemples destinés à illustration la description ne sont nullement limitatifs du type de base des blocs selon l'invention.The blocks offered as an example are blocks having for smooth polyhedron the shape of the blocks from US-A-4347017 however these examples intended to illustrate the description are in no way limitative of the basic type of blocks according to the invention.

L'invention concerne un bloc 1 de carapace en béton moulé monobloc pour structure de protection des ouvrages maritimes et fluviaux.The invention relates to a concrete shell block 1 one-piece molded structure for protecting structures maritime and fluvial.

Ce bloc 1 est constitués de pattes 2 agencées ensemble selon des angles et des écarts inter-patte donnés.This block 1 is made up of legs 2 arranged together according to angles and inter-leg deviations given.

Ce bloc 1 a une surface extérieure 6 de profil général définissant un polyèdre lisse 3. On appelle polyèdre lisse 3 la surface lissée du profil extérieur du bloc. Dans l'art antérieur ce polyèdre lisse correspond à la surface extérieure brute de décoffrage du bloc.This block 1 has an outer surface 6 of general profile defining a smooth polyhedron 3. We call smooth polyhedron 3 the smoothed surface of the exterior profile of the block. In art anterior this smooth polyhedron corresponds to the surface gross external formwork release.

Selon l'invention, au moins une partie de la surface extérieure 6 présente, par rapport au polyèdre lisse 3, des protubérances 4 et/ou des gorges 5 provenant de moulage.According to the invention, at least part of the surface exterior 6 presents, with respect to the smooth polyhedron 3, protrusions 4 and / or grooves 5 from molding.

Il est clair que les défauts de surface résultant du décoffrage d'un moule lisse de l'art antérieur ne constituent pas les protubérances 4 et/ou gorges 5 du bloc 1 selon la présente invention. It is clear that the surface defects resulting from the formwork of a smooth mold of the prior art does do not constitute protuberances 4 and / or grooves 5 of block 1 according to the present invention.

Pour un bloc 1 selon l'invention le polyèdre lisse 3 du bloc 1 est polyèdre imaginaire correspondant la surface extérieure d'un bloc équivalent qui aurait été coulé dans un moule lisse.For a block 1 according to the invention the smooth polyhedron 3 of block 1 is imaginary polyhedron corresponding to the surface exterior of an equivalent block which would have been sunk in a smooth mold.

Les protubérances 4 et/ou les gorges 5 sont dues à des gorges et/ou protubérances volontairement réalisées dans le moule (non représenté) du bloc 1.The protrusions 4 and / or the grooves 5 are due to grooves and / or protrusions voluntarily made in the mold (not shown) of block 1.

Avantageusement, le moule (non représenté) peut être le moule lisse du bloc à peau lisse équivalent dans lequel ont été rajoutés des éléments protubérants comprenant ou générant entre eux des gorges, de manière que lorsque le béton est coulé dans le moule, il en résulte, en positif, des gorges 5 et des protubérances 4 sur le bloc 1.Advantageously, the mold (not shown) can be the smooth mold of the equivalent smooth-skin block in which have been added protruding elements comprising or generating between them grooves, so that when the concrete is poured into the mold, it results, in positive, grooves 5 and protrusions 4 on block 1.

Ainsi on comprend bien que, tout en respectant les proportions optimales d'un bloc lisse équivalent, le volume élémentaire de béton nécessaire à la réalisation d'un bloc 1 selon l'invention est diminué du volume des éléments protubérants ajoutés dans le moule, ces éléments protubérants créant sur le bloc 1 des gorges 5 et de protubérances 4 venant, du fait de l'augmentation du coefficient d'accrochage, pallier le défaut de masse élémentaire du bloc 1 par rapport à son équivalent lisse.So we understand that, while respecting the optimal proportions of an equivalent smooth block, the volume elementary concrete necessary for the realization of a block 1 according to the invention is reduced in volume of the elements protuberants added to the mold, these elements protuberants creating on the block 1 grooves 5 and protuberances 4 coming, due to the increase in attachment coefficient, compensate for the mass defect elementary of block 1 compared to its smooth equivalent.

Ces protubérances 4 et/ou gorges 5 présentent des faces constitutives dans des plans sécants au plan local du polyèdre lisse et forment ensemble un relief accidenté irrégulier. De ce fait cela augmente considérablement le nombre de plan dans lesquels les blocs 1 imbriqués sont susceptibles de se retrouvés en appui stabilisé. L'imbriquement qui en résulte présente des espaces de vide inter-blocs plus important qu'avec des blocs à peau lisse tout en préservant l'effet de groupe de la carapace.These protrusions 4 and / or grooves 5 have constituent faces in secant planes at the local plane of smooth polyhedron and together form an uneven relief irregular. This therefore considerably increases the number of planes in which nested blocks 1 are likely to find themselves in stabilized support. The resulting overlap presents void spaces more inter-block than with smooth skin blocks while preserving the group effect of the shell.

Les figures 2A-2D et 3A-3D représentent deux exemples de blocs selon l'invention sur lesquels les protubérances 4 et/ou les gorges 5 présentent un géomorphisme similaire avec respectivement un site granitique et un site basaltique. De cette manière, les blocs selon l'invention s'intègrent dans leur site de dépôt sans le dénaturer.Figures 2A-2D and 3A-3D show two examples of blocks according to the invention on which the protrusions 4 and / or the gorges 5 have a similar geomorphism with respectively a granite site and a basalt site. Of in this way, the blocks according to the invention are integrated into their deposit site without misrepresenting it.

Le bloc géomorphique peut être avantageusement teint dans la masse dans un ton semblable aux couleurs géologiques du site dans lequel il est déposé.The geomorphic block can be advantageously dyed in the mass in a tone similar to the geological colors of the site in which it is deposited.

Avantageusement le moule selon la présente invention peut être un moule lisse réhabilité. La réalisation d'un tel moule réhabilité peut comprendre les étapes suivantes :Advantageously, the mold according to the present invention can be a rehabilitated smooth mold. The realization of such rehabilitated mold can include the following steps:

On réalise un bloc lisse homothétique de volume inférieur au volume du moule lisse à réhabiliter, de manière qu'il existe une épaisseur de vide entre le moule à réhabiliter le bloc.We realize a smooth homothetic block of volume less than the volume of the smooth mold to be rehabilitated, so that there is a vacuum thickness between the mold rehabilitate the block.

Dans un premier mode de réalisation, on sculpte directement sur le bloc les protubérances et les gorges; puis on maintien le bloc sculpté centré dans le moule et on coule un matériau moulable entre le bloc sculpté et la paroi lisse du moule. On obtient ainsi un moulage du bloc reproductible, et parfaitement intégrée dans des moules lisses à réhabiliter.In a first embodiment, we sculpt directly on the block the protrusions and the grooves; then we keep the sculpted block centered in the mold and we a moldable material flows between the sculpted block and the wall mold smooth. A block molding is thus obtained reproducible, and perfectly integrated in molds smooth to rehabilitate.

Dans un deuxième mode de réalisation, le bloc lisse est enduit d'une épaisseur de matériau facilement façonnable dans laquelle sont façonnées les protubérances et les gorges; puis on maintien le bloc à couche extérieure façonnée centré dans le moule et on coule un matériau moulable entre le bloc à couche extérieure façonnée et la paroi lisse du moule. On obtient ainsi un moulage du bloc reproductible, et parfaitement intégrée dans des moules lisses à réhabiliter.In a second embodiment, the smooth block is coated with a thickness of easily shaped material in which the protuberances and the grooves; then we maintain the block with an outer layer shaped centered in the mold and a material is poured moldable between the shaped outer layer block and the smooth mold wall. A block molding is thus obtained reproducible, and perfectly integrated in molds smooth to rehabilitate.

Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et représentés, mais elle est susceptible de nombreuses variantes accessibles à l'homme du métier sans que l'on s'écarte de l'invention comme définie dans les revendications. En particulier, on pourra, sans sortir du cadre de l'invention, remplacer le bloc de base lisse par tout autre bloc connu. De même on pourra, sans sortir du cadre de l'invention, décliner des blocs ayant des géomorphismes semblables à d'autres géomorphismes naturels que granitique ou basaltique.Of course, the invention is not limited to the modes described and represented, but it is susceptible of numerous variants accessible to the man of the profession without departing from the invention as defined in the claims. In particular, without departing from the scope of the invention, replace the smooth base block with any other known block. Likewise, without departing from the scope of the invention, decline blocks with geomorphisms similar to other natural geomorphisms than granitic or basaltic.

Claims (4)

  1. One-piece outer-shell block of cast concrete for structures for protecting river works and sea works, having an outer surface (6) whose general shape defines a smooth polyhedron (3), characterised in that at least part of the outer surface (6) of the block has cast-in protuberances (4) and/or indentations (5), the protuberances (4) and/or indentations (5) having faces lying in planes which are secant to the local general plane of the smooth polyhedron (3), the protuberances and/or indentations together forming an irregular, broken relief.
  2. Outer-shell block according to claim 1 arranged in a location having a given geomorphology, characterised in that the protuberances (4) and/or indentations (5) of the block are of a geomorphology which is substantially equivalent to the geomorphology of the natural protuberances and/or indentations of the location in question.
  3. Outer-shell block according to claim 2, characterised in that it is integrally coloured in the colours of the location in question.
  4. Mould for one-piece outer-shell block of cast concrete, characterised in that it comprises protuberant members which contain or form between them indentations to allow the indentations (5) and/or protuberances (4) of a one-piece outer-shell block of cast concrete according to any one of claims 1 to 3 to be produced.
EP97400883A 1996-04-25 1997-04-21 One piece moulded concrete shielding block, mould for obtaining such a block Expired - Lifetime EP0803612B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9605236 1996-04-25
FR9605236A FR2748044B1 (en) 1996-04-25 1996-04-25 SINGLE-PIECE CONCRETE SHELL BLOCK, MOLD FOR THE PRODUCTION OF SUCH A BLOCK

Publications (2)

Publication Number Publication Date
EP0803612A1 EP0803612A1 (en) 1997-10-29
EP0803612B1 true EP0803612B1 (en) 2002-03-20

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EP97400883A Expired - Lifetime EP0803612B1 (en) 1996-04-25 1997-04-21 One piece moulded concrete shielding block, mould for obtaining such a block

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EP (1) EP0803612B1 (en)
JP (1) JP3903396B2 (en)
KR (1) KR100516862B1 (en)
CN (1) CN1078919C (en)
AR (1) AR006677A1 (en)
AU (1) AU722756B2 (en)
BR (1) BR9701937A (en)
CA (1) CA2203685A1 (en)
DE (1) DE69711109T2 (en)
ES (1) ES2174197T3 (en)
FR (1) FR2748044B1 (en)
ID (1) ID16665A (en)
MA (1) MA24148A1 (en)
MY (1) MY116884A (en)
NO (1) NO322965B1 (en)
PT (1) PT803612E (en)
TN (1) TNSN97069A1 (en)
TR (1) TR199700317A2 (en)
TW (1) TW344774B (en)
ZA (1) ZA973560B (en)

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ES2315193B2 (en) * 2007-09-07 2009-12-04 Sociedad Anonina Trabajos Y Obras MOLD FOR MANUFACTURE OF CONCRETE COVERS.
ES2356964B1 (en) * 2008-02-11 2011-11-29 Pedro González Requejo ARTIFICIAL BASKET FOR RAILWAY INFRASTRUCTURES.
JP5846495B2 (en) * 2012-03-23 2016-01-20 Smk株式会社 Protective cover for portable electronic devices
FR3118973A1 (en) 2021-01-20 2022-07-22 Soletanche Freyssinet Method for monitoring the displacement of precast blocks of a dike shell
CN115233709B (en) * 2022-05-17 2024-06-21 中国水利水电第九工程局有限公司 Closure device and closure method for closure of riverbed cofferdam tap

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US4043826A (en) * 1974-11-22 1977-08-23 Hum Bing W Process for making artificial rocks
FR2449164A1 (en) * 1979-02-14 1980-09-12 Sogreah ARTIFICIAL BLOCK FOR MARITIME AND RIVER STRUCTURES
US4385088A (en) * 1981-05-22 1983-05-24 David Baskin Decorative artificial rock-like article
DE3740682A1 (en) * 1987-12-01 1989-06-15 Gabriele Donath Process and apparatus for producing a faithfully reproduced block, preferably a paving sett
NL8903138A (en) * 1989-12-21 1991-07-16 Hollandsche Betongroep Nv Impact-resistant breakwater structure - has surface reducing impact load, e.g. by bosses or ribs
US5250250A (en) * 1991-09-19 1993-10-05 Dennis Gorski Process for forming artificial rocks
JP2514887B2 (en) * 1992-10-05 1996-07-10 昌司 行本 Method of manufacturing near natural stone blocks
JP2588832B2 (en) * 1993-06-01 1997-03-12 株式会社テトラ Method for manufacturing artificial stone made of concrete
US5441362A (en) * 1993-09-30 1995-08-15 The United States Of America As Represented By The Secretary Of The Army Concrete armor unit for protecting coastal and hydraulic structures and shorelines
JPH07331636A (en) * 1994-06-13 1995-12-19 Masashi Yukimoto Method for natural-stone block construction
JP2557024B2 (en) * 1994-06-15 1996-11-27 昌司 行本 Multi-natural slope method using near natural stone block with mesh
US8903138B1 (en) * 2011-09-06 2014-12-02 Google Inc. Face recognition using pre-templates

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MY116884A (en) 2004-04-30
DE69711109D1 (en) 2002-04-25
EP0803612A1 (en) 1997-10-29
AU1901797A (en) 1997-10-30
PT803612E (en) 2002-07-31
NO322965B1 (en) 2006-12-18
FR2748044B1 (en) 1998-07-10
CN1168436A (en) 1997-12-24
ES2174197T3 (en) 2002-11-01
TR199700317A2 (en) 1997-11-21
DE69711109T2 (en) 2002-09-05
MX9703058A (en) 1998-06-30
MA24148A1 (en) 1997-12-31
CA2203685A1 (en) 1997-10-25
NO971871L (en) 1997-10-27
AU722756B2 (en) 2000-08-10
NO971871D0 (en) 1997-04-23
CN1078919C (en) 2002-02-06
AR006677A1 (en) 1999-09-08
KR100516862B1 (en) 2005-11-21
BR9701937A (en) 1998-09-15
ID16665A (en) 1997-10-30
JP3903396B2 (en) 2007-04-11
JPH1096222A (en) 1998-04-14
TW344774B (en) 1998-11-11
ZA973560B (en) 1997-11-19
FR2748044A1 (en) 1997-10-31
TNSN97069A1 (en) 1999-12-31

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