EP2513378A1 - Dispositif d'ancrage dans un sol multicouches - Google Patents
Dispositif d'ancrage dans un sol multicouchesInfo
- Publication number
- EP2513378A1 EP2513378A1 EP10773370A EP10773370A EP2513378A1 EP 2513378 A1 EP2513378 A1 EP 2513378A1 EP 10773370 A EP10773370 A EP 10773370A EP 10773370 A EP10773370 A EP 10773370A EP 2513378 A1 EP2513378 A1 EP 2513378A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- helical
- anchoring device
- disk
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004873 anchoring Methods 0.000 title claims abstract description 70
- 230000035515 penetration Effects 0.000 claims abstract description 58
- 239000002689 soil Substances 0.000 claims description 52
- 239000004568 cement Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229920003002 synthetic resin Polymers 0.000 claims description 8
- 239000000057 synthetic resin Substances 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 244000273618 Sphenoclea zeylanica Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001033 granulometry Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000004856 soil analysis Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- E02D5/801—Ground anchors driven by screwing
-
- 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
- E02D5/808—Ground anchors anchored by using exclusively a bonding material
Definitions
- Anchoring device in a multilayer floor Anchoring device in a multilayer floor.
- the present invention relates to an anchoring device in a multilayer floor, of the type comprising a hollow rod whose first end receives means of fasteners and whose opposite end free is intended to penetrate into the ground.
- anchoring devices Two types are known, each adapted to anchors in specific soils.
- the anchoring, whether terrestrial or maritime, of buildings or structures may indeed be to be carried out in loose soil or floors of greater hardness.
- screw anchoring devices comprising one or more mounted helical discs welded to a rod are provided. These anchors screw can stabilize the structure to anchor, since the thickness of the first layer of loose soil is sufficient.
- this type of screw anchor device can not be used in layers of hard floors.
- self-drilling anchoring devices are provided, in which the rod is provided at its end with a cutter capable of digging the soil and whose size greater than the diameter of the rod makes it possible to create a cavity. in which is injected cement to secure the anchoring with the ground.
- Such a self-drilling device however has the disadvantage of not adapting to soils of lesser hardness.
- the anchoring structure can be made to be made in a soil of variable hardness, composed from the surface of a first layer of loose soil, then a second monolithic layer.
- the use of one or other of the devices mentioned above can not allow a satisfactory anchoring of the structure.
- the first layer of loose soil is of insufficient thickness to stabilize a screw anchor, and the use of a self-drilling anchor is made impossible by the depth to which the second layer extends, the distance to the surface likely to destabilize the self-drilling anchor.
- the self-drilling capacity of the anchoring devices used until now may be insufficient, particularly in some granulometry and varied mineral structure, compacted by the pressure of water and also in some terrestrial soils of clay-limestone nature or composed of serious with hydraulic catch, presenting compactness close to monolithic soils.
- the present invention aims to provide an anchoring device that allows a solid anchoring in soils of variable thickness and / or different hardness, as mentioned above.
- the invention proposes an anchoring device in a multilayer floor, of the type comprising a hollow rod whose first end receives fastening means and whose opposite end free is intended to penetrate into the ground, in a positioning plate is mounted on the hollow rod and is intended to bear on the ground surface, the rod carrying successively from the positioning plate towards the free end at least one helical force disk and a helical disk of penetration, characterized in that the rod extends after the helical disc penetration opposite the positioning plate, and in that a cutting is disposed at the free end of this rod, so that first part of the rod extends from the positioning plate to the helical penetration disk, this first part being able to be screwed into at least a first layer of soil, and so that a second part of the rod extends from the helical penetration disc to the cutter, this second part being able to be anchored in a second layer of soil.
- Such a device allows a strong structure anchoring, the first part of the rod being intended to be screwed into a first layer of soil, for example furniture, which extends over a second layer of a soil for example monolithic and consolidated rocky type, harder than the first layer of soil, and in which the second part of the stem is able to be anchored.
- the cutter has a diameter greater than the diameter of the rod
- the at least one helical force disk and the helical penetration disk are welded to the rod;
- a cylindrical envelope is formed around the first part of the rod, between the positioning plate and the helical disk of effort closest to the plate; a cylindrical envelope is formed around the first part of the rod, between the positioning plate and the helical penetration disk,
- the cylindrical casing has a variable diameter whose smallest diameter is greater than the diameter of the second part of the stem
- the cylindrical envelope comprises a first section extending from the positioning plate and having a first diameter followed by a second section extending to the helical penetration disk and having a second diameter smaller than the first diameter and greater than diameter of the second part of the stem,
- the hollow stem is threaded or smooth
- the hollow rod is threaded on at least the second portion extending between the helical penetration disc and the cutter, and in that this hollow rod is smooth in the first part surrounded by the cylindrical envelope;
- At least a portion of the rod and the cutter are drilled with holes for the injection of a cement or a synthetic resin for anchoring in compact soils of rock type;
- the holes for cement injection are drilled only on the second part of the rod and on the cutting edge
- the holes for the injection of cement or resin are drilled on the first part and the second part of the rod and on the cutting edge
- the at least one helical force disk has an outside diameter greater than the outside diameter of the helical penetration disk
- the hollow rod carries between the at least one helical helical disk and the helical penetration disk at least one intermediate helical disk of outside diameter between the outside diameters of the helical disks, respectively of force and penetration,
- said at least one intermediate helical disc is formed by a discontinuous spiral
- said at least one intermediate helical disk is formed by a continuous conical spiral connecting the helical disks.
- FIG. 1 is a schematic representation of an anchoring device according to a first embodiment of the invention
- FIG. 2 is a schematic representation of an anchoring device according to a second embodiment of the invention.
- FIG. 3 is a schematic representation of an anchoring device according to a third embodiment of the invention.
- FIG. 4 is a schematic representation of an anchoring device according to a fourth embodiment of the invention.
- FIG. 5 is a schematic representation of an anchoring device according to a fifth embodiment of the invention.
- FIG. 6 is a schematic representation of an anchoring device according to a sixth embodiment of the invention.
- FIG. 7 is a schematic representation of an anchoring device according to a seventh embodiment of the invention.
- FIG. 8 is a schematic representation of an anchoring device according to an eighth embodiment of the invention.
- FIG. 9 is a schematic representation of an anchoring device according to a ninth embodiment of the invention.
- the anchoring device as shown in all the figures, comprises a hollow rod 2, a first end 21 of which receives attachment means, not shown, of a structure or a building to anchoring in the ground, the opposite end free 22 of the hollow rod 2 being for this purpose intended to penetrate into the ground.
- This structure is brought to be fixed relative to the ground, whether in a land or sea application.
- This anchoring device is of particular interest in the case of an anchoring ground formed of several layers of distinct compositions, and in particular a floor as shown in FIGS. 1 and 2, in which a first layer 31 is formed of a thickness of loose material, for example sand, chippings and generally unconsolidated materials, this first layer 31 resting on a second layer 32 formed of rocks, limestones or concretes end urcis and materials in general monolithic or consolidated, or in the case of a soil shown in FIGS. 3 and 4, in which a third layer 33, formed of vases, rests on this first layer 31.
- a first layer 31 is formed of a thickness of loose material, for example sand, chippings and generally unconsolidated materials
- this first layer 31 resting on a second layer 32 formed of rocks, limestones or concretes end urcis and materials in general monolithic or consolidated, or in the case of a soil shown in FIGS. 3 and 4, in which a third layer 33, formed of vases, rests on this first layer 31.
- the rod 2 has, at a determined distance from the ends, a helical penetration disk 8, a first portion 23 of the rod 2 extending between the first fastening end 21 and this helical penetration disk 8, while a second portion 24 of the rod 2 extends between the helical penetration disk 8 and the free end 22 of drilling.
- the first portion 23 of the rod 2 is, as shown in the figures, adapted to be screwed at least in the first layer of soil 31, and the second portion 24 of the rod 2 is adapted to be anchored, by drilling of the end of the rod 2, in the second layer of soil 32.
- a positioning plate 5 is mounted on the hollow rod 2 and is intended to bear on the ground surface, while the helical penetration disk 8 is disposed on the rod 2 at a determined length of this positioning plate 5 so that the helical penetration disk 8 rests on the upper part of the second layer of harder soil 32.
- a soil analysis prior to drilling makes it possible to determine the size of the first layer of soil 31, and thus to determine at what distance from the positioning plate 5 the helical penetration disk 8 must be arranged on the rod 2.
- the positioning plate 5 is not necessary for example for anchoring in underwater soils.
- the first portion 23 of the rod 2 comprises at least one helical disk 6 effort whose function is to penetrate by screwing in the first layer of loose soil 31.
- it may be provided several helical disks force 6.
- the number of helical disks to be provided on the rod 2 depends on the density of the soil in which the rod must be anchored. The increase in the number of helical force disks increases the anchoring effort of the device. Thus, the lower the density of the soil, the higher the number of force disks must be.
- the diameter of the selected discs is determined to avoid that torques of recovery efforts are too important.
- the distance between two helical disks force 6 depends on the diameter of the disks. This distance between two disks is between two and five times the diameter of the disk, and advantageously between three and four times this diameter.
- the helical disks force 6 extend over the first portion 23 of the rod 2, between the helical penetration disk 8 and the positioning plate 5. So that the helical disks effort 6 are in engagement with the first layer from the ground 31, the diameter of the helical penetration disk 8, brought to penetrate the ground before the helical disks of force 6, must be equal to or smaller than the diameters of the helical disks of effort 6.
- helical disks force 6 diameter equivalent to each other it will be understood that in accordance with what has been written above, the diameters of each helical disk effort 6 could vary, from when a reduction in the diameter of the helical disks force 6 is respected, the helical disk effort 6 closest to the positioning plate 5 to the helical disk 6 effort closest to the disq
- These helicoidal force disks 6 may advantageously have an incoming portion of beveled primer and reinforced by a filler metal.
- these helicoidal disks 6 and penetration 8 can be made of high-strength steel. The spiral disks 6 and penetration force 8 are welded to the rod 2.
- the rod 2 extends in a second portion 24, after the helical penetration disk 8 opposite the positioning plate 5.
- a cutting 4 is disposed at the free end 22 of This rod 2
- This self-drilling cutter 4 is welded or screwed at the end of the rod 2, and has the rigidity characteristics necessary to be able to drill in a second layer of soil 32, made of consolidated or monolithic material.
- the second portion 24 of the rod 2 will thus participate in fixing the structure by anchoring in the ground, following the drilling performed by the cutter 4.
- the length of the second portion 24 of the rod 2 is then chosen to achieve this anchoring over a sufficient length to stabilize the anchoring device.
- a connecting sleeve can be used to increase the total length of the rod and thus the depth of penetration into the ground.
- a connecting sleeve allows a strong structure anchoring, the first portion 23 of the rod 2 being intended to be screwed into at least a first layer of loose soil 31, which extends over a second layer 32 of a monolithic soil and consolidated , harder than the first layer of soil 31, and wherein the second portion 24 of the rod 2 is adapted to be anchored.
- the drill end of the rod provided with the cutter, initially digs the first layer of loose soil, and shapes a borehole which facilitates the screwing action of the helical discs penetration and effort in this first layer.
- the cutter 4 disposed at the free end of the rod 2 has a diameter greater than the diameter of the second portion 24 of the rod 2.
- the drilling of the ground by the cutter 4 then generates a cavity 12 in which extends to following the cutting 4, the second portion 24 of the rod 2.
- an injection of cement or synthetic resin is performed in this cavity 12 ( Figures 1 to 5) to maintain in position the rod 2 relative to at least the second layer of soil 32.
- at least a portion of the rod 2 and the cutter 4 are pierced with holes, not shown, for injection.
- This cement or this resin can be injected on a greater or lesser part of the rod 2 of the anchoring device.
- first embodiment shown in Figure 1 only the second portion 24 of the rod 2 and the cutter 4 are pierced with injection holes.
- the assembly of the rod 2 and the cutter 4 are pierced with injection holes, so that the cement or the resin is spread around the entire rod 2 , in the cavity 12 formed by the cutter 4 for the second portion 24 of the rod 2, and in an additional cavity 1 1 formed by the helical penetration disk 8 and the helical disks force 6 for the first part 23 of the stem 2.
- the choice of use of an anchoring device according to one or other of the embodiments mentioned above is in particular made by the thicknesses of the different layers of each floor. If the first soil layer 31 and the third soil layer 33 require that the first portion 23 of the rod 2 be of a large size, it may be considered preferable for the stability of the anchor to perform a cement injection on the entire stem 2. However, the composition of the third soil layer 33, made of vases, makes it impossible to inject cement or resin around the first portion 23 of the rod 2 which extends into this third layer.
- the additional cavity 1 1 formed by the passage of the helical penetration disk 8 in the third soil layer 33 is recapped immediately after the passage of the helical penetration disk 8. This may also be the case in the first layer of soil 31, in particular if this layer is composed of sand.
- a cylindrical envelope 20 is formed around the first part 23 of the rod 2.
- the envelope 20 is extends between the positioning plate 5 and the helical disk effort 6 closest to this plate, and rests against the plate 5 and this disk.
- the loose material forming the third layer of soil 33 can not fill the additional cavity 1 1 formed by the discs 6 and 8, and a cement injection can be made between the rod 2 and the Cylindrical shell 20.
- the envelope 20 may be provided between two helical disks force 6 to allow injection of cement around the rod in the first thickness of soil 31 .
- the cylindrical envelope 20 is formed around the first portion 23 of the rod 2, between the positioning plate 5 and the helical penetration disk 8.
- a cylindrical casing 40 is formed around the first portion 23 of the rod 2 between the positioning plate 5 and the helical penetration disk 8 and this casing 40 has a variable diameter.
- variable diameter of the cylindrical envelope 40 varies between a large diameter and a small diameter which is greater than the diameter of the second portion 24 of the rod 2.
- the cylindrical envelope 40 comprises a first section 41 extending from the positioning plate 5 and having a first diameter d1 followed by a second section 42 extending to the helical penetration disk 8 and having a second diameter d2 less than first diameter d1 and greater than the diameter d3 of the second portion 24 of the rod 2.
- At least a portion of the rod 2 and the cutter 4 are pierced with holes for the injection of a cement or a synthetic resin.
- only the portion of the rod 2 located between the helical penetration disk 8 and the cutter 4 is pierced with holes for the injection of cement or resin or only the portion of the rod 2 located between the last helical drive disk 6 and the helical penetration disk 8 is pierced with holes for the injection of a cement or a synthetic resin.
- the holes for the injection of cement or synthetic resin are drilled over the entire length of the second portion 24 of the rod 2 and on the cutter 4.
- holes are also drilled on the first portion 23 of the rod 2 for filling with cement or synthetic resin chambers inside the casing 40. This filling increases the strength of the envelope and allows also eliminate any internal corrosion.
- the sections 41 and 42 of the cylindrical envelope 40 are welded together and they support helical disks force 6.
- the hollow rod 23 threaded or smooth form the main resistance column and allows all types of attachment in the upper part as well as the connections with a device for injecting cement or synthetic resin.
- FIGS. 6 to 9 other embodiments of the anchoring device according to the invention will be described.
- the anchoring device shown in these figures has a higher self-drilling capacity than the devices previously described and it can be used in particular in certain underwater soils, of varying grain size and mineral structure, compacted by the pressure of water and also in some Terrestrial soils of clay-limestone nature or composed of gravels with hydraulic grip, presenting compactness close to monolithic soils.
- the anchoring device is formed by a hollow rod 2 threaded along its entire length between the two ends 21 and 22.
- the end 22 of the rod 2 is provided with a cutting 4.
- the disc helicoidal force 6 closest to the cutter 4 has an outer diameter greater than the outer diameter of the helical disc penetration 8.
- the rod 2 carries in its second portion 24 between the helical disk 6 effort closest to the cutter 4 and the helical disk penetration 8 at least one helical disk 50 intermediate outer diameter between the outer diameters of the helical disks, respectively of effort 6 and penetration 8.
- the intermediate helical disk 50 is formed by at least one discontinuous spiral 51 welded to the rod 2.
- a plurality of discontinuous spirals 51 may be interposed in the space delimited by the helical force disk 6 and the helical penetration disk 8, these discontinuous spirals being interposed in a variable or constant pitch and the diameter of these discontinuous spirals. being inscribed in a frustoconical envelope whose large base is the diameter of the helical disk of force 6 and the small base, the diameter of the helical disc of penetration 8.
- the intermediate helical disk 50 is formed by a conical spiral 52 continuous connecting the helical disks, respectively of force 6 and penetration 8.
- This continuous spiral 52 is inscribed in a frustoconical envelope whose large base is determined by the outer diameter of the helical force disk 6 and the small base is determined by the outer diameter of the helical penetration disk 8.
- a cylindrical casing 40 having a variable diameter and disposed around the first portion 23 of the rod 2 and the helical disk effort 6 closest to the cutting 4.
- This cylindrical envelope 40 is identical to that described for the embodiment shown in Figure 5.
- the helical force disk 6 closest to the cutter 4 also has an outside diameter greater than the outside diameter of the helical penetration disk 8 and the rod 2 carries between this helical disk 6 and this drive disk helical helix 8 at least one intermediate helical disc 50 of outer diameter between the outer diameters of the helical disks, respectively of force 6 and penetration 8.
- said at least one intermediate helical disk 50 is formed by a discontinuous spiral 51 identical to the discontinuous spiral of the embodiment shown in FIG. 6.
- said at least one intermediate helical disk is formed by a continuous conical spiral 52 continues identical to that of the embodiment shown in FIG. 7.
- the hollow rod 2 forming the anchoring device has a constant diameter over the entire length of the anchoring device.
- a rod 2 of constant diameter allows simplified industrialization of the anchoring device, but could be replaced in one variant by a rod of variable diameter.
- the diameter of the parts of the rod 2 not covered with a cylindrical envelope 20 or 40 could be greater than the diameter of the parts of the rod surrounded by said envelope 20 or 40.
- a hollow rod 2 threaded threaded. It will be understood that this rod can be threaded or smooth, and for example have a mixed profile.
- the rod 2 may be threaded on the second portion 24 extending between the penetration disc 8 and the cutter 4, and this rod 2 may be smooth in the portion 23 surrounded by the cylindrical envelope 20 or 40.
- Such an anchoring device allows the fixation of structure or building in soils with layers of different compositions.
- the anchoring device is put in place by screwing using a rotary hammer, supported by a drill arm or by a submerged installation according to the terrestrial application or Navy envisaged.
- the device can then extend in these successive layers in a strictly vertical manner as shown, or with a different orientation without departing from the context of the invention, since the cutting edge and the second part of the rod are anchored in a second layer of monolithic or consolidated soil, or furniture, and since this second layer is covered with at least a first layer of loose soil, and that the first part of the stem and the associated disks are screwed into at least the first layer of loose soil.
- Such a mixed anchoring device combining the characteristics of anchoring by drilling and screwing, by means of a single rod, makes it possible to take into account in a single device all the anchoring forces, to know the efforts of extraction and bending on the one hand, and compression and buckling on the other hand.
- the mixed anchoring device according to the invention is able to withstand various stresses and mainly bending forces by reinforcing the upper diameter of the rod 2.
- the bending forces are generated by variable forces with an orientation between 0 and 90 °.
Landscapes
- 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
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FR2009/052578 WO2010079277A1 (fr) | 2009-01-06 | 2009-12-16 | Dispositif d'ancrage dans un sol multicouches |
| PCT/FR2010/052031 WO2011073545A1 (fr) | 2009-12-16 | 2010-09-28 | Dispositif d'ancrage dans un sol multicouches |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2513378A1 true EP2513378A1 (fr) | 2012-10-24 |
| EP2513378B1 EP2513378B1 (fr) | 2015-11-04 |
Family
ID=43333017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10773370.1A Active EP2513378B1 (fr) | 2009-12-16 | 2010-09-28 | Dispositif d'ancrage dans un sol multicouches |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2513378B1 (fr) |
| WO (1) | WO2011073545A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3023857B1 (fr) * | 2014-07-21 | 2016-08-26 | Soc Ind De Produits Mec Ancr'est | Dispositif d'ancrage dans un sol multicouches comprenant une bague de liaison |
| DE102024002650A1 (de) * | 2024-08-16 | 2026-02-19 | Markus Rensburg | Schraubfundament |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3400182A1 (de) * | 1984-01-04 | 1985-07-11 | Friedr. Ischebeck GmbH, 5828 Ennepetal | Injektionsanker |
| DE4201419C1 (en) * | 1992-01-21 | 1993-08-19 | Gd-Anker Gmbh, 3370 Seesen, De | Rock anchor for location in rock with low cohesion factor - comprises outer bore anchor for making borehole and stabilising hole wall and injection anchor of hardenable material |
| US5501086A (en) * | 1994-06-08 | 1996-03-26 | Sherlock; Thomas M. | Security device |
| FR2863633B1 (fr) * | 2003-12-10 | 2007-04-13 | Ancrest Sa | Dispositif d'ancrage dans le sol |
| US20070286687A1 (en) * | 2006-06-12 | 2007-12-13 | Cesare Melegari | Method and equipment for constructing micropiles in soil |
-
2010
- 2010-09-28 EP EP10773370.1A patent/EP2513378B1/fr active Active
- 2010-09-28 WO PCT/FR2010/052031 patent/WO2011073545A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2011073545A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011073545A1 (fr) | 2011-06-23 |
| EP2513378B1 (fr) | 2015-11-04 |
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