EP0364357A1 - Device for improving the resistance of structures against impact of conventional projectiles - Google Patents

Device for improving the resistance of structures against impact of conventional projectiles Download PDF

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Publication number
EP0364357A1
EP0364357A1 EP89402802A EP89402802A EP0364357A1 EP 0364357 A1 EP0364357 A1 EP 0364357A1 EP 89402802 A EP89402802 A EP 89402802A EP 89402802 A EP89402802 A EP 89402802A EP 0364357 A1 EP0364357 A1 EP 0364357A1
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Prior art keywords
projectile
concrete
elements
coating
impact
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EP89402802A
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German (de)
French (fr)
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EP0364357B1 (en
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Henri Chapus
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Campenon Bernard SA
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Campenon Bernard SA
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/04—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against air-raid or other war-like actions

Definitions

  • the present invention relates to a device for improving the resistance of structures, in particular concrete, such as shelters, hangars, buildings, walls, slabs, etc. the impact of conventional projectiles such as bombs and shells.
  • the effectiveness of the projectiles decreases because the thickness of the concrete increases. Above a certain value of the angle of incidence, the projectiles can ricochet and their effectiveness then becomes zero.
  • the aim of the present invention is to create a device which makes it possible to reduce the effectiveness of projectiles and thus improve the resistance of structures to the impact of these projectiles.
  • this device is characterized in that it comprises a surface formed by a succession of ribs and grooves of substantially V-shaped profile, with smooth inclined lateral faces, the height of said ribs being sufficient and said surface being sufficiently hard so that the projectile is deflected after impact on an inclined lateral face of a rib.
  • the behavior of the projectile arriving perpendicular to this surface is one or the other of the following: - the head of the projectile slides (ricochets) along the inclined lateral face and thus initiates a rotational movement which unbalances the projectile and can lead to its destruction; - the projectile slides first then penetrates into the concrete, but at an incidence greater than that which it had on its arrival; - The projectile is systematically oriented towards a low point of the structure which has been reinforced, which considerably reduces its penetration.
  • said surface consists of a coating of metal harder than concrete, the interior faces of this coating being in contact with concrete.
  • This coating promotes the sliding of the projectile along the inclined face of the rib.
  • the covering consists of a series of elements of substantially inverted V cross section and connected to each other by their opposite longitudinal edges.
  • These elements are preferably made of steel, which makes it possible to reduce the cost of the device according to the invention.
  • FIG. 1 shows a projectile 1, for example a bomb arriving with an angle of incidence i on the flat surface of a concrete structure 2 such as a shelter.
  • This projectile 1 is optimal when the angle i is equal to 0 (that is to say when the projectile normally arrives on the surface of the structure).
  • the invention aims to reduce the effectiveness of the projectile 1, by improving the resistance of the structure with respect to the impact of the projectile.
  • the device for improving the resistance of the concrete structure 2 comprises (see FIGS. 2 and 3) a surface 3 formed by a succession of ribs and grooves of substantially V-shaped profile with smooth inclined lateral faces 4 , the height H of said ribs being sufficient and said surface 3 being hard enough for the projectile 1 to be deflected after impact on an inclined lateral face 4 of a rib.
  • the surface 3 is constituted by a coating of metal harder than the concrete of the structure 2, the interior faces 5 of this coating being in contact with the concrete of the structure.
  • the covering consists of a series of elements of substantially inverted V cross section and connected to each other by their opposite longitudinal edges 4a, 4b.
  • These V-shaped elements are preferably made of ordinary quality steel and with a thickness of the order of 1 cm. These elements are thus simple to produce and inexpensive.
  • the lateral faces 4 of the V-shaped elements must cause the projectile 1 to slide.
  • the apex angle has substantially V-shaped elements is preferably of the order of 90 °.
  • the bottom of the grooves formed by the substantially V-shaped elements is reinforced.
  • the longitudinal edges of the substantially V-shaped elements are extended by edges 4c, 4d which overlap each other.
  • the bottom of the grooves formed by the substantially V-shaped elements is reinforced by a double thickness of metal.
  • edges 4c, 4d which overlap each other are fixed to each other by rods 6 anchored in the concrete of the underlying structure.
  • the device according to the invention can be mounted as a reinforcement on the existing concrete surface of a structure or can be used in outdoor lost formwork in the construction of a shelter.
  • the device according to the invention also provides an improvement in the strength of the structure when the incidence of the projectile is clearly greater than 0 °.
  • the surface of the substantially V-shaped elements can be treated to promote the sliding of the projectile.

Abstract

The device makes it possible to improve the resistance of structures, in particular made from concrete (2), to the impact of conventional projectiles (1). It comprises a surface (3) formed by a succession of ridges and furrows of a substantially V-shaped profile having smooth inclined lateral faces, the height (H) of the said ridges being sufficient, and the said surface being sufficiently hard, for the projectile (1) to be deflected after impact on an inclined lateral face (4) of a ridge. Use, in particular, for reinforcing concrete shelters. <IMAGE>

Description

La présente invention concerne un dispositif pour améliorer la résistance des ouvrages notamment en béton, tels que abris, hangars, bâtiments, murs, dalles, etc. à l'impact des projectiles conventionnels tels que bombes et obus.The present invention relates to a device for improving the resistance of structures, in particular concrete, such as shelters, hangars, buildings, walls, slabs, etc. the impact of conventional projectiles such as bombs and shells.

Ces ouvrages en béton présentent le plus souvent des faces planes ou présentant un grand rayon de courbure.These concrete structures most often have flat faces or those with a large radius of curvature.

On sait que l'efficacité des projectiles atteignant un ouvrage en béton, est optimale lorsque leur angle d'incidence, c'est-à-dire l'angle formé par rapport à un plan vertical à la face plane de l'ouvrage est proche de 0°. En effet, à cet angle de 0°, l'épaisseur de béton à traverser est la plus faible.We know that the effectiveness of projectiles reaching a concrete structure is optimal when their angle of incidence, that is to say the angle formed with respect to a vertical plane to the planar face of the structure is close 0 °. Indeed, at this angle of 0 °, the thickness of concrete to be crossed is the smallest.

Pour les angles d'incidence supérieurs, l'efficacité des projectiles diminue, car l'épaisseur de béton augmente. Au-­dessus d'une certaine valeur de l'angle d'incidence, les projectiles peuvent ricocher et leur efficacité devient alors nulle.For higher angles of incidence, the effectiveness of the projectiles decreases because the thickness of the concrete increases. Above a certain value of the angle of incidence, the projectiles can ricochet and their effectiveness then becomes zero.

Le but de la présente invention est de créer un dispositif qui permet de réduire l'efficacité des projectiles et d'améliorer ainsi la résistance des ouvrages à l'impact de ces projectiles.The aim of the present invention is to create a device which makes it possible to reduce the effectiveness of projectiles and thus improve the resistance of structures to the impact of these projectiles.

Suivant l'invention, ce dispositif est caractérisé en ce qu'il comprend und surface formée par une succession de nervures et de sillons de profil sensiblement en V, à faces latérales inclinées lisses, la hauteur desdites nervures étant suffisante et ladite surface étant suffisamment dure pour que le projectile soit dévié après impact sur une face latérale inclinée d'une nervure.According to the invention, this device is characterized in that it comprises a surface formed by a succession of ribs and grooves of substantially V-shaped profile, with smooth inclined lateral faces, the height of said ribs being sufficient and said surface being sufficiently hard so that the projectile is deflected after impact on an inclined lateral face of a rib.

Du fait que les faces latérales des nervures sensiblement en V soient inclinées par rapport à un plan perpendiculaire à la surface de l'ouvrage, le comportement du projectile arrivant perpendiculairement à cette surface est l'un ou l'autre des suivants :
- la tête du projectile glisse (ricoche) le long de la face latérale inclinée et amorce ainsi un mouvement de rotation qui déséquilibre le projectile et peut amener sa destruction ;
- le projectile glisse d'abord puis pénètre dans le béton, mais à une incidence supérieure à celle qu'il avait à son arrivée ;
- le projectile est systématiquement orienté vers un point bas de l'ouvrage qui a été renforcé, ce qui réduit considérablement sa pénétration.Because the lateral faces of the substantially V-shaped ribs are inclined relative to a plane perpendicular to the surface of the structure, the behavior of the projectile arriving perpendicular to this surface is one or the other of the following:
- the head of the projectile slides (ricochets) along the inclined lateral face and thus initiates a rotational movement which unbalances the projectile and can lead to its destruction;
- the projectile slides first then penetrates into the concrete, but at an incidence greater than that which it had on its arrival;
- The projectile is systematically oriented towards a low point of the structure which has been reinforced, which considerably reduces its penetration.

Selon une version avantageuse de l'invention, ladite surface est constituée par un revêtement en métal plus dur que le béton, les faces intérieures de ce revêtement étant en contact avec du béton.According to an advantageous version of the invention, said surface consists of a coating of metal harder than concrete, the interior faces of this coating being in contact with concrete.

Ce revêtement favorise le glissement du projectile le long de la face inclinée de la nervure.This coating promotes the sliding of the projectile along the inclined face of the rib.

Selon une version préférée de l'invention, le revêtement est constitué par une série d'éléments de section transversale sensiblement en V inversé et reliés les uns aux autres par leurs bords longitudinaux opposés.According to a preferred version of the invention, the covering consists of a series of elements of substantially inverted V cross section and connected to each other by their opposite longitudinal edges.

Ces éléments sont de préférence en acier, ce qui permet de réduire le coût du dispositif selon l'invention.These elements are preferably made of steel, which makes it possible to reduce the cost of the device according to the invention.

D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-après.Other features and advantages of the invention will appear in the description below.

Aux dessins annexés donnés à titre d'exemples non limitatifs :

  • - la figure 1 est une vue schématique d'un projectile arrivant avec un certain angle d'incidence sur une structure,
  • - la figure 2 est une vue schématique en coupe d'un dispositif de protection conforme à l'invention, montrant un projectile arrivant normalement sur la surface de l'ouvrage recouvert par ledit dispositif,
  • - la figure 3 est une vue analogue à la figure 2 montrant le projectile à son impact sur le dispositif,
  • - la figure 4 est une vue analogue à la figure 2 montrant un autre comportement du projectile,
  • - la figure 5 est une vue en perspective des éléments de section sensiblement en V du dispositif selon l'invention,
  • - la figure 6 est une vue schématique en coupe d'une version préférée du dispositif conforme à l'invention,
  • - les figures 7 et 8 sont des vues analogues à la figure 3, montrant le comportement d'un projectile arrivant sur un ouvrage avec un angle d'incidence relativement important.
In the appended drawings given by way of nonlimiting examples:
  • FIG. 1 is a schematic view of a projectile arriving at a certain angle of incidence on a structure,
  • FIG. 2 is a schematic sectional view of a protection device according to the invention, showing a projectile normally arriving on the surface of the structure covered by said device,
  • FIG. 3 is a view similar to FIG. 2 showing the projectile at its impact on the device,
  • FIG. 4 is a view similar to FIG. 2 showing another behavior of the projectile,
  • FIG. 5 is a perspective view of the substantially V-shaped section elements of the device according to the invention,
  • FIG. 6 is a schematic sectional view of a preferred version of the device according to the invention,
  • - Figures 7 and 8 are views similar to Figure 3, showing the behavior of a projectile arriving on a structure with a relatively large angle of incidence.

La figure 1 montre un projectile 1 par exemple une bombe arrivant avec un angle d'incidence i sur la surface plane d'un ouvrage en béton 2 tel qu'un abri.FIG. 1 shows a projectile 1, for example a bomb arriving with an angle of incidence i on the flat surface of a concrete structure 2 such as a shelter.

L'efficacité de ce projectile 1 est optimale lorsque l'angle i est égal à 0 (c'est-à-dire lorsque le projectile arrive normalement sur la surface de l'ouvrage).The effectiveness of this projectile 1 is optimal when the angle i is equal to 0 (that is to say when the projectile normally arrives on the surface of the structure).

L'invention vise à réduire l'efficacité du projectile 1, en améliorant la résistance de l'ouvrage à l'égard de l'impact du projectile.The invention aims to reduce the effectiveness of the projectile 1, by improving the resistance of the structure with respect to the impact of the projectile.

Conformément à l'invention, le dispositif pour améliorer la résistance de l'ouvrage 2 en béton comprend (voir figures 2 et 3) une surface 3 formée par une succession de nervures et de sillons de profil sensiblement en V à faces latérales 4 inclinées lisses, la hauteur H desdites nervures étant suffisante et ladite surface 3 étant suffisamment dure pour que le projectile 1 soit dévié après impact sur une face latérale inclinée 4 d'une nervure.According to the invention, the device for improving the resistance of the concrete structure 2 comprises (see FIGS. 2 and 3) a surface 3 formed by a succession of ribs and grooves of substantially V-shaped profile with smooth inclined lateral faces 4 , the height H of said ribs being sufficient and said surface 3 being hard enough for the projectile 1 to be deflected after impact on an inclined lateral face 4 of a rib.

La surface 3 est constituée par un revêtement en métal plus dur que le béton de l'ouvrage 2, les faces intérieures 5 de ce revêtement étant en contact avec le béton de l'ouvrage.The surface 3 is constituted by a coating of metal harder than the concrete of the structure 2, the interior faces 5 of this coating being in contact with the concrete of the structure.

Dans la réalisation des figures annexées, le revêtement est constitué par une série d'éléments de section transversale sensiblement en V inversé et reliés les uns aux autres par leurs bords longitudinaux opposés 4a, 4b. Ces éléments en V sont de préférence en acier de qualité ordinaire et d'épaisseur de l'ordre de 1 cm. Ces éléments sont ainsi simples à réaliser et peu coûteux.In the embodiment of the appended figures, the covering consists of a series of elements of substantially inverted V cross section and connected to each other by their opposite longitudinal edges 4a, 4b. These V-shaped elements are preferably made of ordinary quality steel and with a thickness of the order of 1 cm. These elements are thus simple to produce and inexpensive.

Comme déjà indiqué plus haut, les faces latérales 4 des éléments en V doivent engendrer un glissement du projectile 1. A cet effet, la demanderesse pense que la hauteur H des nervures devrait être sensiblement comprise entre le tiers de la longueur et la longueur totale du projectile 1.As already indicated above, the lateral faces 4 of the V-shaped elements must cause the projectile 1 to slide. For this purpose, the applicant believes that the height H of the ribs should be substantially between one third of the length and the total length of the projectile 1.

Si cette hauteur H est insuffisante, le glissement du projectile 1 est insuffisant pour réduire son efficacité. Si cette hauteur H est trop importante, les coûts de fabrication du dispositif selon l'invention deviennent excessifs.If this height H is insufficient, the sliding of the projectile 1 is insufficient to reduce its effectiveness. If this height H is too large, the manufacturing costs of the device according to the invention become excessive.

L'angle au sommet a des éléments sensiblement en V est de préférence de l'ordre de 90°.The apex angle has substantially V-shaped elements is preferably of the order of 90 °.

Dans la réalisation représentée, le fond des sillons formés par les éléments sensiblement en V est renforcé.In the embodiment shown, the bottom of the grooves formed by the substantially V-shaped elements is reinforced.

A cet effet, les bords longitudinaux des éléments sensiblement en V sont prolongés par des bordures 4c, 4d qui se recouvrent mutuellement. Ainsi, le fond des sillons formés par les éléments sensiblement en V est renforcé par une double épaisseur de métal.To this end, the longitudinal edges of the substantially V-shaped elements are extended by edges 4c, 4d which overlap each other. Thus, the bottom of the grooves formed by the substantially V-shaped elements is reinforced by a double thickness of metal.

Dans la réalisation selon la figure 6, les bordures 4c, 4d qui se recouvrent mutuellement sont fixées l'une à l'autre par des tiges 6 ancrées dans le béton de l'ouvrage sous-jacent.In the embodiment according to Figure 6, the edges 4c, 4d which overlap each other are fixed to each other by rods 6 anchored in the concrete of the underlying structure.

Par ailleurs, on voit sur cette figure 6, qu'entre la structure en béton à protéger et les éléments sensiblement en V est interposée une plaque 7 en acier fixée à ces éléments au moyen des tiges 6, l'espace compris entre cette plaque 7 et les éléments étant remplis de béton 8. Ainsi, le fond des sillons formés par les éléments sensiblement en V est renforcé par trois épaisseurs d'acier.Furthermore, it can be seen in this FIG. 6, that between the concrete structure to be protected and the elements that are substantially V-shaped is interposed a steel plate 7 fixed to these elements by means of the rods 6, the space between this plate 7 and the elements being filled with concrete 8. Thus, the bottom of the grooves formed by the substantially V-shaped elements is reinforced by three thicknesses of steel.

Le dispositif selon l'invention peut être monté en renforcement sur la surface en béton existante d'un ouvrage ou peut être utilisé en coffrage perdu extérieur dans la construction d'un abri.The device according to the invention can be mounted as a reinforcement on the existing concrete surface of a structure or can be used in outdoor lost formwork in the construction of a shelter.

On va maintenant expliquer les effets techniques du dispositif de protection ou de renforcement que l'on vient de décrire.We will now explain the technical effects of the protection or reinforcement device that we have just described.

La surface dure 3 formée par la juxtaposition de nervures et de sillons en V induit l'un des trois effets suivants :

  • 1) la tête du projectile 1 arrivant normalement à la surface de l 'ouvrage 2, glisse ou ricoche le long d'une face latérale inclinée 4 et amorce ainsi un mouvement de rotation (voir figure 3) qui déséquilibre le projectile 1 et peut engendrer sa destruction, de sorte que l'ouvrage n'est pratiquement pas affecté ;
  • 2) le projectile 1 glisse d'abord sur une face inclinée 4 puis pénètre dans le béton 2 (voir flèche F sur la figure 4), mais à une incidence nettement supérieure à celle qu'il avait à son arrivée, de sorte que son efficacité destructrice est nettement réduite ;
  • 3) le projectile 1 est systématiquement orienté par la face inclinée 4 vers le fond des sillons qui a été particulièrement renforcé par plusieurs épaisseurs d'acier (voir notamment le cas de la figure 6), de sorte que la pénétration du projectile 1 est considérablement réduite.
The hard surface 3 formed by the juxtaposition of ribs and V-shaped grooves induces one of the following three effects:
  • 1) the head of the projectile 1 normally arriving at the surface of the work 2, slides or ricochets along an inclined lateral face 4 and thus initiates a rotational movement (see Figure 3) which unbalances the projectile 1 and can cause its destruction, so that the structure is practically unaffected;
  • 2) the projectile 1 first slides on an inclined face 4 then penetrates into the concrete 2 (see arrow F in FIG. 4), but at an incidence much greater than that which it had on its arrival, so that its destructive efficiency is markedly reduced;
  • 3) the projectile 1 is systematically oriented by the inclined face 4 towards the bottom of the grooves which has been particularly reinforced by several thicknesses of steel (see in particular the case of FIG. 6), so that the penetration of the projectile 1 is considerably scaled down.

Ce qui précède s'applique aux projectiles les plus dangereux, c'est-à-dire ceux ayant un angle d'incidence i proche de 0°.The above applies to the most dangerous projectiles, that is to say those having an angle of incidence i close to 0 °.

Le dispositif conforme à l'invention apporte également une amélioration dans la résistance de l'ouvrage lorsque l'incidence du projectile est nettement supérieure à 0°.The device according to the invention also provides an improvement in the strength of the structure when the incidence of the projectile is clearly greater than 0 °.

En effet, un projectile 1 atteignant la surface 3 avec une incidence i par exemple de 30° (voir figure 7) ne sera pas affecté par le glissement ou le ricochet provoqué plus haut.Indeed, a projectile 1 reaching the surface 3 with an incidence i for example of 30 ° (see FIG. 7) will not be affected by the sliding or the ricochet caused above.

En revanche, il aura tendance à pivoter vers la zone de plus faible résistance lors de sa pénétration dans le béton 2 (voir figure 8) c'est-à-dire vers l'extérieur de l'ouvrage. Dans ce cas, l'incidence du projectile sera augmentée et son efficacité réduite.On the other hand, it will tend to pivot towards the zone of weakest resistance when it penetrates into the concrete 2 (see FIG. 8), that is to say towards the outside of the structure. In this case, the incidence of the projectile will be increased and its effectiveness reduced.

Bien entendu, l'invention n'est pas limitée aux exemples que l'on vient de décrire et on peut apporter à ceux-­ci de nombreuses modifications sans sortir du cadre de l'invention.Of course, the invention is not limited to the examples which have just been described and numerous modifications can be made to them without departing from the scope of the invention.

Ainsi, la surface des éléments sensiblement en V peut être traitée pour favoriser le glissement du projectile.Thus, the surface of the substantially V-shaped elements can be treated to promote the sliding of the projectile.

Claims (8)

1. Dispositif pour améliorer la résistance des ouvrages en béton (2) à l'impact des bombes ou missiles (1), caractérisé en ce qu'il comprend une surface (3) formée par une succession de nervures et de sillons de profil sensiblement en V à faces latérales (4) inclinées et lisses, ladite surface (3) étant constituée par un revêtement en métal plus dur que le béton, les faces intérieures (5) de ce revêtement étant en contact avec du béton, la hauteur (H) desdites nervures étant suffisante et ledit revêtement étant suffisamment dur pour que le projectile (1) soit dévié après impact sur une face latérale inclinée (4) d'une nervure.1. Device for improving the resistance of concrete structures (2) to the impact of bombs or missiles (1), characterized in that it comprises a surface (3) formed by a succession of ribs and grooves of substantially profile in V with lateral faces (4) inclined and smooth, said surface (3) being constituted by a coating of metal harder than concrete, the interior faces (5) of this coating being in contact with concrete, the height (H ) said ribs being sufficient and said coating being sufficiently hard for the projectile (1) to be deflected after impact on an inclined lateral face (4) of a rib. 2. Dispositif conforme à la revendication 1, caractérisé en ce que le revêtement est constitué par une série d'éléments de section transversale sensiblement en V inversé et reliés les uns aux autres par leurs bords longitudinaux opposés (4a, 4b).2. Device according to claim 1, characterized in that the coating consists of a series of elements of substantially inverted V cross section and connected to each other by their opposite longitudinal edges (4a, 4b). 3. Dispositif conforme à l'une des revendications 1 ou 2, caractérisé en ce que le revêtement est en acier.3. Device according to one of claims 1 or 2, characterized in that the coating is made of steel. 4. Dispositif conforme à l'une des revendications 1 à 3, caractérisé en ce que la hauteur (H) des nervures est sensiblement comprise entre le tiers de la longueur et la longueur totale du projectile (1).4. Device according to one of claims 1 to 3, characterized in that the height (H) of the ribs is substantially between one third of the length and the total length of the projectile (1). 5. Dispositif conforme à l'une des revendications 1 à 4, caractérisé en ce que le fond des sillons présente un renforcement.5. Device according to one of claims 1 to 4, characterized in that the bottom of the grooves has a reinforcement. 6. Dispositif conforme à l'une des revendications 2 à 5, caractérisé en ce que les bords longitudinaux (4a, 4b) des éléments sensiblement en V sont prolongés par des bordures (4c, 4d) qui se recouvrent mutuellement pour constituer un renforcement.6. Device according to one of claims 2 to 5, characterized in that the longitudinal edges (4a, 4b) of the substantially V-shaped elements are extended by edges (4c, 4d) which overlap each other to form a reinforcement. 7. Dispositif conforme à la revendication 6, caractérisé en ce que les bordures (4c, 4d) qui se recouvrent mutuellement sont fixées l'une à l'autre par des tiges (6) ancrées dans le béton (2) sous-jacent.7. Device according to claim 6, characterized in that the edges (4c, 4d) which overlap each other are fixed to each other by rods (6) anchored in the concrete (2) underlying. 8. Dispositif conforme à la revendication 7, caractérisé en ce qu'entre le structure en béton (2) à protéger et les éléments en V est interposée une plaque (7) en métal fixée à ces éléments au moyen desdites tiges (6), l'espace compris entre cette plaque (7) et les éléments étant rempli de béton (8).8. Device according to claim 7, characterized in that between the concrete structure (2) to protect and the V-shaped elements is interposed a metal plate (7) fixed to these elements by means of said rods (6), the space between this plate (7) and the elements being filled with concrete (8).
EP89402802A 1988-10-14 1989-10-11 Device for improving the resistance of structures against impact of conventional projectiles Expired - Lifetime EP0364357B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8813534A FR2637935B1 (en) 1988-10-14 1988-10-14 DEVICE FOR IMPROVING THE STRENGTH OF WORKS TO THE IMPACT OF CONVENTIONAL PROJECTILES
FR8813534 1988-10-14

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EP0364357A1 true EP0364357A1 (en) 1990-04-18
EP0364357B1 EP0364357B1 (en) 1992-03-18

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CA (1) CA2000436A1 (en)
DE (1) DE68901023D1 (en)
DK (1) DK510089A (en)
ES (1) ES2030289T3 (en)
FR (1) FR2637935B1 (en)
GR (1) GR3004166T3 (en)
NO (1) NO170173C (en)
PT (1) PT91987B (en)
TR (1) TR25306A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US787065A (en) * 1902-04-25 1905-04-11 Frank G White Armor-plate.
GB527591A (en) * 1939-04-15 1940-10-11 Albert James Bridle Improvements relating to air raid shelters and the like
DE1675801U (en) * 1953-01-21 1954-05-06 Nelsbach & Co SPLITTER PROTECTION WALL MADE OF PRE-FABRICATED PARTS.
DE2325921A1 (en) * 1973-05-22 1974-12-12 Karl Weber SHOT-PROOF WALL, IN PARTICULAR FOR VEHICLES, INCLUDING AIRPLANES
DE2818733A1 (en) * 1978-04-28 1979-10-31 Wahl Verschleiss Tech Low cost armour plating - comprises chilled cast iron layers opt. contg. hard inserts
FR2519133A1 (en) * 1981-12-29 1983-07-01 Graner Joseph Penetration resistant armour plate - has front plate with shaped and spaced cones to deflect projectiles
FR2529933A1 (en) * 1982-07-12 1984-01-13 Alsthom Atlantique PROTECTION COVER AGAINST PASSIVE MISSILES IMPACTS
DE3508865A1 (en) * 1985-03-13 1986-09-18 Jürgen Dipl.-Ing. 6607 Quierschied Unterländer Shelters comprising a structural steel/trapezoidal profiled sheet-metal composite system of the modular construction principle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US787065A (en) * 1902-04-25 1905-04-11 Frank G White Armor-plate.
GB527591A (en) * 1939-04-15 1940-10-11 Albert James Bridle Improvements relating to air raid shelters and the like
DE1675801U (en) * 1953-01-21 1954-05-06 Nelsbach & Co SPLITTER PROTECTION WALL MADE OF PRE-FABRICATED PARTS.
DE2325921A1 (en) * 1973-05-22 1974-12-12 Karl Weber SHOT-PROOF WALL, IN PARTICULAR FOR VEHICLES, INCLUDING AIRPLANES
DE2818733A1 (en) * 1978-04-28 1979-10-31 Wahl Verschleiss Tech Low cost armour plating - comprises chilled cast iron layers opt. contg. hard inserts
FR2519133A1 (en) * 1981-12-29 1983-07-01 Graner Joseph Penetration resistant armour plate - has front plate with shaped and spaced cones to deflect projectiles
FR2529933A1 (en) * 1982-07-12 1984-01-13 Alsthom Atlantique PROTECTION COVER AGAINST PASSIVE MISSILES IMPACTS
DE3508865A1 (en) * 1985-03-13 1986-09-18 Jürgen Dipl.-Ing. 6607 Quierschied Unterländer Shelters comprising a structural steel/trapezoidal profiled sheet-metal composite system of the modular construction principle

Also Published As

Publication number Publication date
CA2000436A1 (en) 1990-04-14
PT91987B (en) 1995-08-09
FR2637935B1 (en) 1993-07-16
FR2637935A1 (en) 1990-04-20
GR3004166T3 (en) 1993-03-31
DK510089A (en) 1990-04-15
NO894012L (en) 1990-04-17
DE68901023D1 (en) 1992-04-23
NO894012D0 (en) 1989-10-06
ES2030289T3 (en) 1992-10-16
PT91987A (en) 1990-04-30
TR25306A (en) 1992-12-21
DK510089D0 (en) 1989-10-13
EP0364357B1 (en) 1992-03-18
NO170173C (en) 1992-09-16
NO170173B (en) 1992-06-09

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