EP1477613A1 - Ground anchor with anchoring protective means and concave penetration profile - Google Patents

Ground anchor with anchoring protective means and concave penetration profile Download PDF

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Publication number
EP1477613A1
EP1477613A1 EP03362005A EP03362005A EP1477613A1 EP 1477613 A1 EP1477613 A1 EP 1477613A1 EP 03362005 A EP03362005 A EP 03362005A EP 03362005 A EP03362005 A EP 03362005A EP 1477613 A1 EP1477613 A1 EP 1477613A1
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EP
European Patent Office
Prior art keywords
anchoring device
ground anchoring
rod
core
head
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EP03362005A
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German (de)
French (fr)
Inventor
Philippe Cantet
Lucas Merceron
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Individual
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Individual
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Priority to EP03362005A priority Critical patent/EP1477613A1/en
Publication of EP1477613A1 publication Critical patent/EP1477613A1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/803—Ground anchors with pivotable anchoring members

Definitions

  • the subject of the present invention is a device for anchoring the ground to a tie, with protection means and with a penetration profile with concave faces.
  • Ground anchors find many applications for retaining vertically erected buildings such as masts, poles, scaffolding, towers, trees or retaining elements.
  • Such anchors are frequently found for the installation of buildings without foundations like greenhouses or for the installation of pylons.
  • the installation is fast but above all, it is possible to test immediately the mechanical strength of the anchor, including with the safety factors required.
  • the installation of the equipment which must to be guyed can be carried out immediately after the installation of the anchors.
  • the anchors are of suitable dimensions to present resistance mechanical required to maintain the guyed equipment.
  • the anchoring devices must therefore be sophisticated in their arrangement in order to guarantee the minimum capacities, whatever the soil quality.
  • anchoring means comprise a body with a front part and a rear part.
  • the front part forms a blade with a leading edge and is intended to penetrate the ground.
  • the cross section of this body is generally triangular and has a top having sides generally concave and a generally convex underside from one edge to the other. The longitudinal edges at the top and bottom interface are even raised up.
  • a link is reported on the top, mounted articulated, overflowing on both sides and on the other side of the two concave wings of the upper part.
  • the placement of the body in the ground is carried out by means of a rod of thrust that enters a blind hole in the body, on which pushes or shocks.
  • the rod is removed and a traction is exerted on the link to rotate the body around the point of fixing the link.
  • the body is then perpendicular, offering all its resistance surface.
  • Guidance is also very important for such devices. In the case of a blade-shaped head, this guidance remains imprecise especially as the underside is convex in shape.
  • the object of the present invention is to overcome these drawbacks and to propose an anchoring device which is functional, which protects the link, which avoids the degradation of the body during placement in the soil, which provides a effective attachment in the penetration housing during tilting and which remains compact to require minimal penetration effort.
  • the device shown comprises a body 10 with a head 12, an upper part 14 and a lower part 16 as well as a part 18 back.
  • the body 10 comprises a through hole 20, formed over its entire length, designed to receive a through rod 22, called a rod.
  • the lower part 16 comprises two longitudinal side faces 24, transversely concave, which meet at the bottom to form a sharp edge 26, clearly visible in the front view of FIG. 5 and on the figure 6.
  • the lower part is refined to form a part of a cone 30 with facets.
  • the interface between the upper part and the lower part is flat.
  • a core 32 came from manufacture with the body and protrudes perpendicular to the interface of the upper and lower parts with a zone 34 of longitudinal junction with a leave.
  • This core 32 is narrow and decreases in height towards the rear part 18.
  • the core In its central part, the core carries a hole 36, the edges of which are chamfered. The axis of this hole is oriented perpendicular to the plane of the core, therefore perpendicular to the longitudinal axis.
  • the head 12 forms a cone 30 with facets to allow more penetration Easy.
  • This cone comprises, in addition to the end of the lateral faces 24 longitudinal, an upper face 38 which extends the core 32 forwards and two lateral shields 40, arranged substantially at the interface between the head 12 and core 32.
  • These shields are located upstream of the hole 36 relative to the direction of penetration.
  • the device further comprises hooking lugs 42 arranged laterally on its rear part 18. These lugs are protruding, like this is perfectly shown in Figures 2 and 3, and inclined downwards.
  • This rod 22 is equipped with an anvil 44 which comes to bear on the part 18 rear to transmit the forces exerted on the rod.
  • the device is also equipped in a known manner with a tie rod 46, in the occurrence a cable, forming a loop and passing through the hole 36.
  • the loop is closed by any means like cable ties.
  • This tie rod is longer than the penetration depth and serves to fix the shrouds or the connecting parts with the element to be braced.
  • the device is equipped with its laying rod 22. This is introduced in the longitudinal hole 20 until the anvil 44, coming from manufacture with the rod, come into contact with the rear part 18.
  • the device is equipped with its tie rod 46 which is positioned substantially parallel to the laying rod.
  • the loop of the tie rod is lodged on both sides and on the other side of the edge 32, and the extension of the tie rod comes in the part of reduced height of said edge.
  • pressure is applied or more generally impacts on this rod, manually or by means of a pneumatic hammer, electric or hydraulic, so that it penetrates the ground.
  • the tip of the stem is the first in contact and fragments any hard parts of the ground, facilitating penetration without damaging the head of the device.
  • the device is introduced up to the previously determined depth, in depending on the nature of the soil.
  • the cross section remains small so that the efforts to be exerted for penetration into the ground remain quite acceptable.
  • the second phase, Figure 7B, consists of an operation to remove the rod 22 of pose.
  • the anchoring device remains at the bottom because it is retained by the pins 42 attachment, only the tie remaining accessible.
  • the third and final phase consists in exerting a strong pull traction, see figure 7C. This effort causes the device to tilt which is placed substantially perpendicular to the longitudinal axis of introduction.
  • This tilting is obtained because the pins 42 constitute a point of substantially fixed tilting.
  • the tie having been protected during penetration into the ground, over the entire length of the stroke, it has its nominal resistance.
  • the upper surface comprises two faces 138.1 and 138.2, preferably transversely concaves, which join to form a sharp edge 139. This arrangement helps to improve penetration and guidance in the soil of the anchoring device.
  • the device according to the present invention is produced industrially and advantageously by molding.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The device has a body (10) with a head, an upper part, a lower part and a rear part. A central core (32) is provided with a hole for receiving a tie-rod. Two protection shields of the tie-rod are arranged at interface between the core and the head. The lower part has two lateral sides which are joined in the lower part for forming a stopper. The head results from extension of upper and lower parts from the central core.

Description

La présente invention a pour objet un dispositif d'ancrage au sol à tirant, avec des moyens de protection et avec un profil de pénétration à faces concaves.The subject of the present invention is a device for anchoring the ground to a tie, with protection means and with a penetration profile with concave faces.

Les ancrages au sol trouvent de très nombreuses applications pour retenir des édifices érigés verticalement comme des mâts, des poteaux, des échafaudages, des tours, des arbres ou des éléments de soutènement.Ground anchors find many applications for retaining vertically erected buildings such as masts, poles, scaffolding, towers, trees or retaining elements.

On trouve fréquemment de tels ancrages pour la mise en place d'édifices sans fondations comme des serres ou pour la mise en place de pylônes.Such anchors are frequently found for the installation of buildings without foundations like greenhouses or for the installation of pylons.

Les avantages de ces agencements sont nombreux. La rapidité de la mise en place est un atout car il ne faut pas faire d'excavation, il ne faut pas prévoir de couler du béton avec des ferraillages adaptés et il ne faut pas attendre la résistance mécanique maximale dudit béton dont on sait qu'elle est atteinte seulement après plusieurs jours voire plusieurs dizaines de jours.The advantages of these arrangements are numerous. The speed of implementation space is an asset because you should not do excavation, you should not plan pour concrete with suitable reinforcement and do not wait for the maximum mechanical resistance of said concrete which is known to be reached only after several days or even several tens of days.

La mise en place est rapide mais surtout, il est possible de tester immédiatement la résistance mécanique de l'ancrage, y compris avec les coefficients de sécurité nécessaires. La mise en place de l'équipement qui doit être haubané peut être réalisée immédiatement après la pose des ancrages.The installation is fast but above all, it is possible to test immediately the mechanical strength of the anchor, including with the safety factors required. The installation of the equipment which must to be guyed can be carried out immediately after the installation of the anchors.

Il n'y a ainsi pas besoin de revenir sur site ou de laisser du matériel en attente entre deux phases. There is therefore no need to return to the site or leave material in waiting between two phases.

Les ancrages sont de dimensions adaptées pour présenter une résistance mécanique requise afin de maintenir l'équipement à haubaner.The anchors are of suitable dimensions to present resistance mechanical required to maintain the guyed equipment.

Néanmoins, le problème est de pouvoir atteindre la résistance mécanique nécessaire mais cela reste aussi très dépendant du sol.However, the problem is to be able to achieve mechanical strength necessary but it also remains very dependent on the soil.

Les dispositifs d'ancrage doivent donc être sophistiqués dans leur agencement en sorte de garantir les capacités minimales, quelle que soit la qualité du sol.The anchoring devices must therefore be sophisticated in their arrangement in order to guarantee the minimum capacities, whatever the soil quality.

On connaít un brevet européen N°725 862 qui décrit des moyens d'ancrage. Ces moyens d'ancrage comprennent un corps avec une partie avant et une partie arrière. La partie avant forme une lame avec un bord d'attaque et est destinée à pénétrer dans le sol.We know a European patent No. 725 862 which describes anchoring means. These anchoring means comprise a body with a front part and a rear part. The front part forms a blade with a leading edge and is intended to penetrate the ground.

Afin d'améliorer ces qualités de pénétration, la section transversale de ce corps est globalement triangulaire et comporte un dessus ayant des côtés globalement concaves et un dessous globalement convexe d'un bord à l'autre. Les bords longitudinaux à l'interface du dessus et du dessous sont même relevés vers le haut.In order to improve these penetration qualities, the cross section of this body is generally triangular and has a top having sides generally concave and a generally convex underside from one edge to the other. The longitudinal edges at the top and bottom interface are even raised up.

Un lien est rapporté sur le dessus, monté articulé, débordant de part et d'autre des deux ailes concaves de la partie supérieure.A link is reported on the top, mounted articulated, overflowing on both sides and on the other side of the two concave wings of the upper part.

La mise en place du corps dans le sol est réalisée au moyen d'une tige de poussée qui pénètre dans un trou borgne ménagé dans le corps, sur laquelle on exerce une poussée ou des chocs.The placement of the body in the ground is carried out by means of a rod of thrust that enters a blind hole in the body, on which pushes or shocks.

Une fois le corps enfoncé à la distance déterminée, la tige est retirée et une traction est exercée sur le lien pour faire pivoter le corps autour du point de fixation du lien. Le corps se trouve alors perpendiculaire, offrant toute sa surface en résistance.Once the body is pushed in at the determined distance, the rod is removed and a traction is exerted on the link to rotate the body around the point of fixing the link. The body is then perpendicular, offering all its resistance surface.

Ce pivotement du corps d'ancrage est très connu, notamment dans un brevet américain N° 3 969 854. This pivoting of the anchor body is very well known, in particular in a patent American No. 3,969,854.

Si ce type d'ancrage présente un intérêt, il reste des problèmes importants à solutionner.If this type of anchoring is of interest, there are important problems to solve.

En effet, lors de la pénétration du corps, le lien est soumis directement à l'agression des constituants du sol car le corps décrit dans le brevet européen N°725 862 ne prévoit aucune protection. Ainsi, des roches dures et affûtées peuvent dégrader ce lien durant la pénétration de l'ancrage dans le sol.Indeed, during penetration of the body, the link is subjected directly to aggression on soil constituents because the body described in the European patent No. 725 862 does not provide any protection. So hard, sharp rocks can degrade this bond during penetration of the anchor into the ground.

Le guidage est également très important pour de tels dispositifs. Dans le cas d'une tête en forme de lame, ce guidage reste imprécis surtout que le dessous est de forme convexe.Guidance is also very important for such devices. In the case of a blade-shaped head, this guidance remains imprecise especially as the underside is convex in shape.

On note aussi que le bord d'attaque du corps est directement soumis aux chocs, frayant le passage. Ceci peut provoquer des éclatements de ce corps soumis en son coeur aux efforts et chocs exercés par la tige de poussée et en tête au contact des roches.We also note that the leading edge of the body is directly subjected to shocks, clearing the way. This can cause the body to burst. subjected in its heart to the forces and shocks exerted by the push rod and in head in contact with rocks.

La présente invention a pour objet de pallier ces inconvénients et de proposer un dispositif d'ancrage qui est fonctionnel, qui protège le lien, qui évite la dégradation du corps lors de la mise en place dans le sol, qui assure un accrochage efficace dans le logement de pénétration lors du basculement et qui reste compact pour requérir un effort minimal de pénétration.The object of the present invention is to overcome these drawbacks and to propose an anchoring device which is functional, which protects the link, which avoids the degradation of the body during placement in the soil, which provides a effective attachment in the penetration housing during tilting and which remains compact to require minimal penetration effort.

L'invention est maintenant décrite en détail suivant un mode de réalisation particulier, non limitatif, en regard des dessins qui représentent :

  • figure 1, une vue en perspective du dispositif selon la présente invention,
  • figure 2, une vue en élévation latérale du dispositif,
  • figure 3, une vue de dessus de ce même dispositif,
  • figure 4, une vue en coupe longitudinale suivant la ligne 4-4 de la figure 3,
  • figure 5, une vue de face du dispositif,
  • figure 6, une vue en coupe suivant la ligne 6-6 de la figure 2,
  • figures 7A-7C, un synoptique de mise en place du dispositif selon la présente invention,
  • figure 8, une vue en perspective du dispositif selon une autre variante, et
  • figure 9, une vue de face du dispositif de la figure 8.
The invention is now described in detail according to a particular, non-limiting embodiment, with reference to the drawings which represent:
  • FIG. 1, a perspective view of the device according to the present invention,
  • FIG. 2, a side elevation view of the device,
  • FIG. 3, a top view of this same device,
  • FIG. 4, a view in longitudinal section along line 4-4 of FIG. 3,
  • FIG. 5, a front view of the device,
  • FIG. 6, a sectional view along line 6-6 of FIG. 2,
  • FIGS. 7A-7C, a block diagram of installation of the device according to the present invention,
  • FIG. 8, a perspective view of the device according to another variant, and
  • FIG. 9, a front view of the device of FIG. 8.

Sur la figure 1, le dispositif représenté comprend un corps 10 avec une tête 12, une partie 14 supérieure et une partie 16 inférieure ainsi qu'une partie 18 arrière.In FIG. 1, the device shown comprises a body 10 with a head 12, an upper part 14 and a lower part 16 as well as a part 18 back.

Le corps 10 comprend un trou 20 débouchant, ménagé sur toute sa longueur, prévu pour recevoir une tige 22 traversante, dite de pose.The body 10 comprises a through hole 20, formed over its entire length, designed to receive a through rod 22, called a rod.

La partie 16 inférieure comprend deux faces 24 latérales longitudinales, transversalement concaves, qui se rejoignent en partie inférieure pour former une arête 26 affûtée, bien visible sur la vue de face de la figure 5 et sur la figure 6.The lower part 16 comprises two longitudinal side faces 24, transversely concave, which meet at the bottom to form a sharp edge 26, clearly visible in the front view of FIG. 5 and on the figure 6.

Ces deux faces 24 latérales remontent pour former des ailes 28 latérales.These two lateral faces 24 rise to form lateral wings 28.

Au niveau de la tête 12, la partie inférieure s'affine pour former une partie d'un cône 30 à facettes.At the level of the head 12, the lower part is refined to form a part of a cone 30 with facets.

L'interface entre la partie supérieure et la partie inférieure est plane.The interface between the upper part and the lower part is flat.

Une âme 32 est venue de fabrication avec le corps et fait saillie perpendiculairement à l'interface des parties supérieure et inférieure avec une zone 34 de jonction longitudinale avec un congé.A core 32 came from manufacture with the body and protrudes perpendicular to the interface of the upper and lower parts with a zone 34 of longitudinal junction with a leave.

Cette âme 32 est étroite et diminue en hauteur vers la partie 18 arrière.This core 32 is narrow and decreases in height towards the rear part 18.

Dans sa partie centrale, l'âme porte un trou 36, dont les bords sont chanfreinés. L'axe de ce trou est orienté perpendiculairement au plan de l'âme, donc perpendiculairement à l'axe longitudinal.In its central part, the core carries a hole 36, the edges of which are chamfered. The axis of this hole is oriented perpendicular to the plane of the core, therefore perpendicular to the longitudinal axis.

La tête 12 forme un cône 30 à facettes pour permettre une pénétration plus aisée. Ce cône comprend, en plus de l'extremite des faces 24 latérales longitudinales, une face supérieure 38 qui prolonge l'âme 32 vers l'avant et deux boucliers 40 latéraux, disposés sensiblement à l'interface entre la tête 12 et l'ame 32. The head 12 forms a cone 30 with facets to allow more penetration Easy. This cone comprises, in addition to the end of the lateral faces 24 longitudinal, an upper face 38 which extends the core 32 forwards and two lateral shields 40, arranged substantially at the interface between the head 12 and core 32.

Ces boucliers sont situés en amont du trou 36 par rapport au sens de pénétration.These shields are located upstream of the hole 36 relative to the direction of penetration.

Le dispositif comprend en outre des ergots 42 d'accrochage disposés latéralement sur sa partie 18 arrière. Ces ergots sont en saillie, comme cela est parfaitement représenté sur les figures 2 et 3, et inclinés vers le bas.The device further comprises hooking lugs 42 arranged laterally on its rear part 18. These lugs are protruding, like this is perfectly shown in Figures 2 and 3, and inclined downwards.

Sur la figure 4, on peut repérer la position du trou 36 qui est au centre d'inertie du corps et qui se trouve décentré par rapport à l'axe central longitudinal d'introduction. De plus, la tige 22 de pose, représentée en trait discontinu, traverse l'intégralité du corps et fait saillie sur l'avant. Cette tige fait saillie de quelques centimètres en sorte de servir de perforateur et de venir au contact des zones du sol présentant une grande dureté en provoquant une fragmentation. Avantageusement sa pointe est durcie par tout procédé adapté et fonction de la nature du matériau utilisé. Une traitement thermique de trempe est particulièrement adapté pour une tige en acier.In Figure 4, we can locate the position of the hole 36 which is in the center of inertia of the body and which is off-center with respect to the central axis longitudinal introduction. In addition, the laying rod 22, shown in line discontinuous, crosses the entire body and projects from the front. This rod protrudes a few centimeters so as to serve as a puncher and come into contact with areas of the soil with high hardness, causing fragmentation. Advantageously, its tip is hardened by any process suitable and depending on the nature of the material used. Heat treatment hardening is particularly suitable for a steel rod.

Cette tige 22 est équipée d'une enclume 44 qui vient en appui sur la partie 18 arrière pour transmettre les efforts exercés sur la tige.This rod 22 is equipped with an anvil 44 which comes to bear on the part 18 rear to transmit the forces exerted on the rod.

Le dispositif est également équipé de façon connue d'un tirant 46, en l'occurrence un câble, formant une boucle et passant par le trou 36. la boucle est fermée par tout moyen comme des serre-câbles. On peut aussi prévoir d'interposer une chape ou une manille sur laquelle est rapporté ledit tirant.The device is also equipped in a known manner with a tie rod 46, in the occurrence a cable, forming a loop and passing through the hole 36. the loop is closed by any means like cable ties. We can also plan to interpose a yoke or a shackle on which said tie rod is attached.

Ce tirant est d'une longueur supérieure à la profondeur de pénétration et sert pour fixer les haubans ou les pièces de liaison avec l'élément à haubaner.This tie rod is longer than the penetration depth and serves to fix the shrouds or the connecting parts with the element to be braced.

La mise en place d'un tel dispositif d'ancrage s'effectue de la façon suivante, en regard des figures 7A à 7C.The installation of such an anchoring device is carried out as follows, opposite Figures 7A to 7C.

Le dispositif est équipé de sa tige 22 de pose. Celle-ci est introduite dans le trou 20 longitudinal jusqu'à ce que l'enclume 44, venue de fabrication avec la tige, vienne au contact de la partie 18 arrière. The device is equipped with its laying rod 22. This is introduced in the longitudinal hole 20 until the anvil 44, coming from manufacture with the rod, come into contact with the rear part 18.

Le dispositif est équipé de son tirant 46 qui vient se positionner sensiblement parallèlement à la tige de pose. La boucle du tirant vient se loger de part et d'autre de l'arête 32, et la prolongation du tirant vient dans la partie de hauteur réduite de ladite arête.The device is equipped with its tie rod 46 which is positioned substantially parallel to the laying rod. The loop of the tie rod is lodged on both sides and on the other side of the edge 32, and the extension of the tie rod comes in the part of reduced height of said edge.

A l'aide de moyens adaptés, on exerce une pression ou plus généralement des chocs sur cette tige, manuellement ou au moyen d'un marteau pneumatique, électrique ou hydraulique, en sorte de la faire pénétrer dans le sol.Using suitable means, pressure is applied or more generally impacts on this rod, manually or by means of a pneumatic hammer, electric or hydraulic, so that it penetrates the ground.

La pointe de la tige est la première au contact et fragmente les éventuelles parties dures du sol, facilitant la pénétration sans endommager la tête du dispositif.The tip of the stem is the first in contact and fragments any hard parts of the ground, facilitating penetration without damaging the head of the device.

Le dispositif est introduit jusqu'à la profondeur déterminée préalablement, en fonction de la nature du sol.The device is introduced up to the previously determined depth, in depending on the nature of the soil.

Durant cette pénétration, on remarque la protection de la boucle du tirant et du tirant lui-même par les boucliers 40. La boucle et le tirant se trouvent pendant toute la mise en place en arrière de l'arête 32.During this penetration, note the protection of the tie loop and of the tie itself by the shields 40. The loop and the tie are during the entire installation behind the edge 32.

Cette phase est représentée sur la figure 7A.This phase is shown in Figure 7A.

On remarque aussi durant cette première étape que le guidage est très précis grâce au profil en V concave et à son arête 26. Cette forme comme une carène de coque de bateau permet une mise sur rail. La pointe de la tige de pose, également en amont, permet de guider la trajectoire du dispositif et de réaliser un enfoncement rectiligne.We also note during this first stage that the guidance is very precise thanks to the concave V- profile and its edge 26. This shape like a hull of a boat hull allows it to be put on rail. The tip of the laying rod, also upstream, makes it possible to guide the trajectory of the device and to achieve a straight sinking.

De plus, la section transversale reste faible si bien que les efforts à exercer pour la pénétration dans le sol restent tout à fait acceptables.In addition, the cross section remains small so that the efforts to be exerted for penetration into the ground remain quite acceptable.

La deuxième phase, figure 7B, consiste en une opération de retrait de la tige 22 de pose.The second phase, Figure 7B, consists of an operation to remove the rod 22 of pose.

Celle-ci est retirée manuellement ou à l'aide d'outils adaptés de préhension. Le dispositif d'ancrage reste au fond car il est retenu par les ergots 42 d'accrochage, seul le tirant restant accessible. This is removed manually or using suitable gripping tools. The anchoring device remains at the bottom because it is retained by the pins 42 attachment, only the tie remaining accessible.

Selon une variante, il est possible de réaliser un ensemble logement 20 et tige 22 de pose avec une faible conicité si bien qu'une fois le déblocage effectué, le retrait est très aisé car le jeu s'agrandit vite.According to a variant, it is possible to produce a housing 20 and rod assembly 22 of installation with a low taper so that once the release has been carried out, removal is very easy because the game grows quickly.

La troisième et dernière phase consiste à exercer sur le tirant une forte traction, voir figure 7C. Cet effort provoque le basculement du dispositif qui se place sensiblement perpendiculairement à l'axe longitudinal d'introduction.The third and final phase consists in exerting a strong pull traction, see figure 7C. This effort causes the device to tilt which is placed substantially perpendicular to the longitudinal axis of introduction.

Ce basculement est obtenu car les ergots 42 constituent un point de basculement sensiblement fixe.This tilting is obtained because the pins 42 constitute a point of substantially fixed tilting.

On peut exercer des efforts en tenant compte des coefficients de sécurité, c'est-à-dire au-delà des efforts de fonctionnement nécessaires ultérieurement.We can exert efforts taking into account the safety coefficients, that is to say beyond the necessary operating efforts later.

Le tirant ayant été protégé durant la pénétration dans le sol, sur toute la longueur de la course, il présente sa résistance nominale.The tie having been protected during penetration into the ground, over the entire length of the stroke, it has its nominal resistance.

Sur les figures 8 et 9, on a représenté une autre variante du dispositif, les éléments identiques à ceux de la figure 1 portant les mêmes références augmentées de 100. Selon ce mode de réalisation, la surface supérieure comprend deux faces 138.1 et 138.2, de préférence transversalement concaves, qui se rejoignent pour former une arête 139 affûtée. Cet agencement contribue à améliorer la pénétration et le guidage dans le sol du dispositif d'ancrage.In FIGS. 8 and 9, another variant of the device is shown, the elements identical to those of FIG. 1 bearing the same references increased by 100. According to this embodiment, the upper surface comprises two faces 138.1 and 138.2, preferably transversely concaves, which join to form a sharp edge 139. This arrangement helps to improve penetration and guidance in the soil of the anchoring device.

Le dispositif selon la présente invention est réalisé industriellement et avantageusement par moulage.The device according to the present invention is produced industrially and advantageously by molding.

Claims (9)

Dispositif d'ancrage au sol comprenant un corps (10; 110) avec une tête (12; 112), une partie (14; 114) supérieure et une partie (16; 116) inférieure ainsi qu'une partie (18; 118) arrière, caractérisé en ce qu'il comprend une âme (32; 132) centrale munie d'un trou (36; 136) prévu pour recevoir un tirant (46; 146) et deux boucliers (40; 140) de protection dudit tirant, disposés à l'interface entre ladite âme (32; 132) et la tête (14; 114).Ground anchoring device comprising a body (10; 110) with a head (12; 112), an upper part (14; 114) and a lower part (16; 116) as well as a part (18; 118) rear, characterized in that it comprises a central core (32; 132) provided with a hole (36; 136) intended to receive a tie rod (46; 146) and two shields (40; 140) for protecting said tie rod, disposed at the interface between said core (32; 132) and the head (14; 114). Dispositif d'ancrage au sol selon la revendication 1, caractérisé en ce que la partie (16; 116) inférieure comprend deux faces (24; 124) latérales longitudinales, transversalement concaves, qui se rejoignent en partie inférieure pour former une arête (26; 126) affûtée.Ground anchoring device according to claim 1, characterized in that the lower part (16; 116) comprises two longitudinal lateral faces (24; 124), transversely concave, which join at the lower part to form an edge (26; 126) sharp. Dispositif d'ancrage au sol selon la revendication 1 ou 2, caractérisé en ce que la tête (12; 112) est de forme conique et résulte du prolongement de la partie (14; 114) supérieure et de la partie inférieure (16; 116), de ladite âme (32; 132) centrale.Ground anchoring device according to claim 1 or 2, characterized in that the head (12; 112) is conical in shape and results from the extension of the upper part (14; 114) and the lower part (16; 116 ), of said central core (32; 132). Dispositif d'ancrage au sol selon la revendication 1, 2 ou 3, caractérisé en ce que le corps (10; 110) comprend un trou (20; 120) débouchant, ménagé sur toute sa longueur, prévu pour recevoir une tige (22; 122) traversante de pose.Ground anchoring device according to claim 1, 2 or 3, characterized in that the body (10; 110) comprises a through hole (20; 120), formed over its entire length, designed to receive a rod (22; 122) through installation. Dispositif d'ancrage au sol selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend sur la partie (18; 118) arrière, en saillie, deux ergots (42; 142) d'accrochage, disposés latéralement.Ground anchoring device according to any one of the preceding claims, characterized in that it comprises, on the rear part (18; 118), projecting, two hooking lugs (42; 142), arranged laterally. Dispositif d'ancrage au sol selon la revendication 5, caractérisé en ce que les ergots (42; 142) sont inclinés vers le bas.Ground anchoring device according to claim 5, characterized in that the pins (42; 142) are inclined downwards. Dispositif d'ancrage au sol selon l'une quelconque des revendications précédentes, caractérisé en ce que l'âme (32; 132) est d'une hauteur réduite vers la partie arrière. Ground anchoring device according to any one of the preceding claims, characterized in that the core (32; 132) is of a reduced height towards the rear part. Dispositif d'ancrage au sol selon la revendication 7, caractérisé en ce que l'âme (32; 132) présente avec l'interface des parties supérieure et inférieure, une zone (34; 134) de jonction longitudinale avec un congé.Ground anchoring device according to claim 7, characterized in that the core (32; 132) has, with the interface of the upper and lower parts, a zone (34; 134) of longitudinal junction with a fillet. Dispositif d'ancrage au sol selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'il comprend une surface supérieure avec deux faces (138.1, 138.2) qui se rejoignent pour former une arête (139) affûtée.Ground anchoring device according to any one of Claims 1 to 8, characterized in that it comprises an upper surface with two faces (138.1, 138.2) which join to form a sharp edge (139).
EP03362005A 2003-05-14 2003-05-14 Ground anchor with anchoring protective means and concave penetration profile Withdrawn EP1477613A1 (en)

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EP03362005A EP1477613A1 (en) 2003-05-14 2003-05-14 Ground anchor with anchoring protective means and concave penetration profile

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EP03362005A EP1477613A1 (en) 2003-05-14 2003-05-14 Ground anchor with anchoring protective means and concave penetration profile

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2094914A2 (en) * 2006-12-19 2009-09-02 Foresight Products, LLC Improved earth anchor
GB2481022A (en) * 2010-06-08 2011-12-14 Dean Bowie An anchor apparatus for use underground
GB2485877A (en) * 2010-11-24 2012-05-30 Gripple Ltd Ground Anchor with channel and projecting driving member
US20140112723A1 (en) * 2012-10-19 2014-04-24 Landmark Earth Solutions, Inc. Bullet anchor system
WO2021240285A1 (en) * 2020-05-26 2021-12-02 Gripple Limited Anchor system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US936824A (en) * 1909-10-12 Fredrick V Simpson Ground-anchor.
US3969854A (en) 1974-12-23 1976-07-20 Foresight Industries Planing fin anchor
US4096673A (en) * 1976-03-19 1978-06-27 Foresight Industries Method of anchoring
EP0313936A1 (en) * 1987-10-29 1989-05-03 Foresight Industries, Inc. Ground anchor
GB2283511A (en) * 1993-11-03 1995-05-10 Platipus Anchors Ltd Improvements in ground anchors
EP0725862A1 (en) 1993-11-03 1996-08-14 Platipus Anchors Limited Improvements in ground anchors

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US936824A (en) * 1909-10-12 Fredrick V Simpson Ground-anchor.
US3969854A (en) 1974-12-23 1976-07-20 Foresight Industries Planing fin anchor
US4096673A (en) * 1976-03-19 1978-06-27 Foresight Industries Method of anchoring
EP0313936A1 (en) * 1987-10-29 1989-05-03 Foresight Industries, Inc. Ground anchor
GB2283511A (en) * 1993-11-03 1995-05-10 Platipus Anchors Ltd Improvements in ground anchors
EP0725862A1 (en) 1993-11-03 1996-08-14 Platipus Anchors Limited Improvements in ground anchors
US5775037A (en) * 1993-11-03 1998-07-07 Platipus Anchors Limited Ground anchor

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2094914A2 (en) * 2006-12-19 2009-09-02 Foresight Products, LLC Improved earth anchor
EP2094914A4 (en) * 2006-12-19 2009-12-30 Foresight Products Llc Improved earth anchor
GB2481022A (en) * 2010-06-08 2011-12-14 Dean Bowie An anchor apparatus for use underground
GB2481022B (en) * 2010-06-08 2014-10-08 Dean Bowie Anchor apparatus
GB2485877A (en) * 2010-11-24 2012-05-30 Gripple Ltd Ground Anchor with channel and projecting driving member
US20140112723A1 (en) * 2012-10-19 2014-04-24 Landmark Earth Solutions, Inc. Bullet anchor system
US9447556B2 (en) * 2012-10-19 2016-09-20 L & P Property Management Company Bullet anchor system
WO2021240285A1 (en) * 2020-05-26 2021-12-02 Gripple Limited Anchor system
GB2599757A (en) * 2020-05-26 2022-04-13 Gripple Ltd Anchor system
GB2599757B (en) * 2020-05-26 2023-01-04 Gripple Ltd Anchor system
GB2609173A (en) * 2020-05-26 2023-01-25 Gripple Ltd Anchor system
GB2609173B (en) * 2020-05-26 2024-06-05 Gripple Ltd Anchor system

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