EP2896750A1 - Dispositif et procédé d'ancrage d'une construction - Google Patents
Dispositif et procédé d'ancrage d'une construction Download PDFInfo
- Publication number
- EP2896750A1 EP2896750A1 EP14151602.1A EP14151602A EP2896750A1 EP 2896750 A1 EP2896750 A1 EP 2896750A1 EP 14151602 A EP14151602 A EP 14151602A EP 2896750 A1 EP2896750 A1 EP 2896750A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support member
- profile
- ground
- hole
- longitudinal channel
- 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 39
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000009435 building construction Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 17
- 239000011152 fibreglass Substances 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000005253 cladding Methods 0.000 description 46
- 238000005553 drilling Methods 0.000 description 22
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 210000002023 somite Anatomy 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- 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
Definitions
- the present invention relates to a device for anchoring a building construction on a load-bearing ground with a support member for introducing tensile and / or compressive forces of the building construction in the ground and on a generic method for anchoring a building structure.
- Such devices are known to be used in civil engineering for pile foundations to initiate the resulting on a surface area of the ground on the support member from the superstructure burdens in deeper subsoil layers.
- These loads include, in particular tensile and / or compressive forces, which are merged starting from the building construction on a head side of the support member to which the building structure is anchored to the support member, and are removed therefrom along the longitudinal extent of the support member in the depths of the ground .
- support members are used, for example, anchor or nails, which are usually loaded on train, or piles, which are charged to train or pressure or both.
- the subsoil may be, for example, the ground or a tunnel wall.
- so-called self-drilling anchors are known in which the support member is designed as an operational drill with a continuous axial cavity.
- the hardenable medium can already be injected into the subterranean hole during drilling, and the support member is in an already operational condition after completion of the drilling operation and hardening of the medium.
- the support member is made of a drillable material.
- a conventional self-drilling anchor is therefore essentially formed by a steel cylinder.
- such a material has considerable constructive disadvantages, in particular with regard to weak electrical insulation effect and low corrosion protection.
- the present invention seeks to provide a device and a method of the type mentioned, in which while avoiding the aforementioned disadvantages, the simplest possible installation of the anchoring device in compliance with building requirements, especially in corrosion prone and / or electrically stressed environment is possible.
- the device has an envelope profile with a longitudinal channel in which the support member is anortbar, so that an inner annular space between the envelope profile and the support member is present.
- the envelope profile can be used to make a hole in the ground and has an opening at the hollow sole side end, so that a hardenable medium can be driven through the longitudinal channel into an outer annular space between the hole and the envelope profile. Due to the hardenable medium, a connection with the enveloping profile and the support member can be produced in the inner annular space.
- Such an anchoring device can meet high constructional requirements, in particular by a suitable choice of a support member with appropriate construction and / or material properties. It is especially to think of materials with good corrosion resistance and / or low electrical Conductivity, which nevertheless have a sufficient capacity.
- the structural complexity for installing the anchoring device can be kept low, since according to the invention a suitably chosen enveloping profile with appropriate construction and / or material properties can be used to produce the foundation hole. To think is particularly on impact and / or drilling resistant materials. Since the enveloping profile as part of the anchoring device preferably remains in the ground, eliminates at least a complex removal of a corresponding drilling device from the ground.
- the inventive device makes it possible that the load capacity of the support member with respect to the tensile and / or compressive forces acting thereon by any susceptibility to corrosion of the Hüllprofils undergoes little or no impairment. Because the support member may have in this case by the curable medium within and outside the Hüllprofils a sufficient bond with the ground. Also, a possible influence of any electrical conductivity of the envelope profile can be avoided in the inventive device, in particular by the building structure is anchored substantially only to the support member and thus only negligible conductor properties can occur on the Hüllprofil.
- the method according to the invention preferably also comprises the step of connecting the building construction to a head side of the support member, which protrudes from the enveloping profile.
- the support member is formed substantially rod-shaped. More preferably, the support member along its longitudinal extent to a substantially constant thickness. Most preferably, the support member on the envelope of a circular cylinder and / or is formed substantially circular cylindrical.
- the enveloping profile is formed by a cladding tube.
- the cladding tube may be a rectangular cylinder or a circular cylinder.
- the longitudinal channel corresponds to the interior of the cladding tube.
- the inner annulus corresponds to the space between the cladding tube and the support member and the outer annulus the space between the cladding tube and the hole in the ground. It is also conceivable, for example, an 8-shaped profile, in which two support members are used, which are separated by the intermediate wall of the 8-shaped profile.
- the envelope profile is formed by a laterally open profile.
- it may be an H-shaped profile, in which two support members are used, which are separated by the intermediate wall of the H-profile.
- the longitudinal channel corresponds to the space that is surrounded by the non-open sides of the Hüllprofils.
- the inner annulus corresponds to the gap between the non-open sides of the envelope profile and the support member.
- the outer annulus corresponds to the space between the non-open sides of the Hüllprofils and the hole in the ground.
- the longitudinal channel in the envelope profile is preferably formed according to the geometry of the support member. Accordingly, the inner annulus preferably has a substantially constant thickness along its longitudinal extent and / or along its circumference. It can thereby be achieved that the connection of the curable medium with the enveloping profile and with the support member has a consistently equivalent quality.
- the width of the inner annulus is preferably in a range between 70 mm and 1 mm, more preferably in a range between 50 mm and 3 mm, and most preferably in a range between 30 mm and 5 mm.
- the transverse diameter of the support member is preferably in a range between 60 mm and 2 mm, more preferably in a range between 50 mm and 2 mm and most preferably in a range between 32 mm and 5 mm.
- the wall thickness of the enveloping profile is preferably in a range between 40 mm and 3 mm, more preferably in a range between 30 mm and 5 mm and most preferably in a range between 20 mm and 5 mm.
- the opening at the hollow sole side end of the Hüllprofils is preferably formed by an open end of the Hüllprofils, in which the longitudinal channel opens. It is also conceivable that a cover is arranged on the hollow sole side end of the Hüllprofils over the longitudinal channel and in the cover at least one opening is present through which the curable medium is propelled into the outer annulus.
- the curable medium preferably comprises a resin and / or cement, in particular pure cement or a cement mixture.
- a firm connection thereof with the enveloping profile and the support member is formed, in particular a tension- and / or pressure-resistant connection.
- the connection comprises a non-positive connection.
- the support member and / or the inner wall of the Hüllprofils, along which the longitudinal channel is formed have a substantially smooth surface structure, along which the frictional connection is formed.
- the compound of the curable medium with the envelope profile and / or with the support member is positively, in particular in addition or alternatively to a frictional connection.
- the support member has an uneven surface structure, in particular at the surface region, which is opposite to the inner wall of the enveloping profile in the longitudinal channel. That's what you can do provided the positive connection with the curable medium or increased.
- a thread-shaped surface structure along the lateral surface of the support member is arranged.
- the inner wall of the Hüllprofils along the longitudinal channel can be made substantially smooth or also have an uneven surface structure, in particular in a thread shape to provide a corresponding positive connection with the curable medium or increase.
- a cohesive connection between the support member and the enveloping profile within the longitudinal channel is formed by the curable medium after curing.
- the support member extends within the longitudinal channel over at least two thirds, more preferably at least three quarters, the longitudinal extent of the envelope profile.
- the placing of the support member takes place in the Hüllprofil such that the support member is at one end substantially flush with the Lohlsohlen solutionen end of the Hüllprofils or protrudes from the Lohlsohlen districten end of the Hüllprofils.
- an attachment may be arranged at the hollow sole side end of the enveloping profile, into which the support member protrudes. As a result, essentially the complete depth of the hole, within which the envelope profile extends, can be used to dissipate the force into the ground.
- the support member does not extend completely to the Lohlsohlen solution end of the Hüllprofils, wherein a Lohlsohlen generaler area of the Hüllprofils is filled, for example, only by the curable medium or an essay is arranged on the Lohlsohlen currenten end of the Hüllprofils, which projects into the longitudinal channel and at which the support member abuts.
- the placing of the support member takes place in the enveloping profile such that the support member protrudes from the hole mouth side end of the enveloping profile.
- a free head side of the support member is preferably formed, on which the building structure is anchored.
- the anchoring of the building structure to the support member is such that the construction with the envelope profile is not substantially in contact and / or substantially no or negligible loads are introduced into the envelope.
- the support member at least on its free head side on a protection against UV radiation.
- a protection against UV radiation can be particularly advantageous when the support member comprises a sensitive to UV radiation material, such as glass fiber reinforced plastic.
- the protection against UV radiation can be formed for example by a protective cap, which is applied over the free head side.
- the support member at least on the free head side of a UV-protected Material consists, in particular a UV-protected glass fiber reinforced plastic.
- the length of the free head side of the support member depends in particular on the building structure to be anchored thereto.
- a length of the free head side of the support member of preferably at least 10 cm, more preferably at least 20 cm, and most preferably at least 35 cm may be advantageous.
- the length of the free head side of the support member corresponds to at most a third, more preferably at most a quarter, the length of the portion of the support member within the longitudinal channel.
- the support member has a greater length than the enveloping profile. Due to the difference in length, at least the free head side of the support member is preferably formed. It is also conceivable that several enveloping profiles are used to produce the hole, which are used successively and / or one above the other to produce the hole.
- a support member which can be used for this purpose preferably has at least one length, which corresponds to the sum of the lengths of the individual enveloping profiles, and additionally a length difference for providing the free head side, which protrudes from the uppermost enveloping profile.
- the length of the Hüllprofile preferably depends essentially on the length of the required anchoring distance in the ground, whereby a plurality of Hüllprofilen can be used. For example, three sheath profiles with a respective individual length of 3 m can be used to make a hole in the ground for a total anchoring distance of 9 m manufacture. A corresponding support member is then formed longer than 9 m, for example 10 m, to provide a free head side for anchoring the building structure.
- the enveloping profile preferably comprises a correspondingly hard material, in particular a shock and / or impact and / or Drill-resistant material.
- the enveloping profile comprises a metal to be suitable for the production of the hole. Further preferred here is steel or a steel alloy.
- the enveloping profile in a hollow-sole-side section preferably consists essentially of the metal. More preferably, the enveloping profile consists essentially completely of the metal.
- an attachment for removing material is preferably arranged on the hollow sole side end of the enveloping profile.
- this is a crown or other tool for material removal.
- the attachment is open in the region of the hollow sole-side end of the enveloping profile.
- the attachment has at least one opening through which the hardenable medium can be driven from the longitudinal channel of the enveloping profile into the outer annular space between the hole and the enveloping profile.
- the article inside is hollow.
- the article has a larger transverse diameter than the enveloping profile.
- the attachment is preferably suitable for material removal of a hole, which is substantially has a diameter which corresponds to the total diameter of the outer annulus.
- the attachment is preferably formed by a drill bit.
- the drill bit has at least one side opening through which the hardenable medium can be driven into the outer annular space. More preferably, the side opening is formed by a transverse channel which extends in a transverse direction to the longitudinal channel of the enveloping profile. Preferably, two side openings, in particular transverse channels, are provided on opposite sides of the drill bit. This allows advantageous expulsion of the hardenable medium during rotation of the drill bit.
- the drill bit is preferably a loss drill bit, which remains in the ground after the drilling operation.
- the enveloping profile has an external thread, more preferably along the outer wall in its longitudinal direction. Along this, preferably a rotation of the envelope profile with the attachment arranged thereon, in particular drill bit, can be carried out.
- the external thread also preferably serves as a surface structure on the enveloping profile, by which the quality of the connection of the hardenable medium with the enveloping profile in the outer annular space is increased.
- the cladding tube 1 has a circular cylindrical shape and has an inner longitudinal channel 2 which extends from a first end 3, hereinafter referred to as a hole mouth-side end, to a second end 4, hereinafter referred to as the bottom sole-side end.
- the cladding tube has an outer transverse diameter between 20 mm and 200 mm.
- the tube thickness is for example in a range between 5 mm and 30 mm.
- Both the hole mouth side end 3 and the hollow sole side end 4 is open.
- the outer wall 5 of the cladding tube 1 has a winding-shaped surface structure 6 in the extension direction of the longitudinal channel 2.
- the inner wall 7 of the cladding tube 1 is substantially smooth.
- the Fig. 2 shows an attachment 11 for the hollow sole side end 4 of the cladding tube 1.
- the attachment is a drill bit 11.
- the drill bit 11 has a rear receiving portion 12 which is formed substantially circular cylindrical and open at the rear end 13.
- the receiving portion 12 has along its inner wall an internal thread 14 into which the external thread 6 of the cladding tube 1 can be screwed to a stop 15 in the interior of the receiving portion 12. At its front end 16, the receiving portion 12 is closed by a conical taper.
- transverse channels 17 is provided in each case a passage opening from the inner cavity of the receiving portion 12 to the outside. After insertion of the cladding tube 1 in the receiving portion 12, this results in each case a passage opening from the longitudinal channel 2 through the hollow sole side end 4 of the cladding tube 1 through the transverse channels 17 in the outer space.
- two drill wings 18, 19 are arranged on the outer wall of the receiving portion 12 on diametrically opposite sides.
- the drilling wings 18, 19 thus make it possible to produce a borehole with a larger diameter than the casing 1, so that an outer annulus can be produced between the casing 1 and the borehole.
- the drilling wings 18, 19 extend from the central region of the receiving portion 12 to beyond its front end 16 addition.
- a drill bit 20 is arranged at the center of the front end 16 of the receiving portion 12.
- the Fig. 3 shows a rod-shaped support member 22 made of glass fiber reinforced plastic (GRP).
- the support member is circular cylindrical and solid throughout, so that no internal cavities are present.
- GRP glass fiber reinforced plastic
- the support member 22 is formed longer than the cladding tube 1. It comprises a foot portion 27, which is essentially the Length of the cladding tube 1 corresponds, and a head portion 28 with an additional length. Preferably, the length of the head portion corresponds to at most a third, more preferably at most a quarter, the length of the foot portion.
- the support member 22 has a diameter that is between 10 mm and 50 mm smaller than the inner diameter of the cladding tube 1.
- the Fig. 4 shows a device 31 for anchoring a building structure. Since the diameter of the support member 22 is smaller than the inner diameter of the cladding tube 1, is between the inner wall 7 of the cladding tube 1 and the Outer wall 25 of the support member an inner annular space 32 is present. The cross-sectional thickness of the inner annular space 32 is substantially constant in the circumferential direction and in the longitudinal direction of the cladding tube 1.
- the support member 22 is located at its foot-side end 24 substantially flush with the hollow sole side end 4 of the cladding tube 1 and touches the stop 15 of the cap 11.
- the head-side end 23 of the support member protrudes by the length of the head portion 28 from the hole mouth side end 3 of the cladding tube 1 out.
- the Fig. 5 1 illustrates a method for producing a borehole 41 in a ground 42 through the jacket 1 with the drill bit 11 placed on the bottom side of the hole.
- the drill bit 11 is rotated at a predetermined angle. in particular vertically, placed on ground 42.
- the drill bit 11 is set in rotation and thereby progressively advanced into the interior of the ground 42.
- an outer annular space 43 is created between the cladding tube 1 and the ground 42.
- the cross-sectional thickness of the outer annular space 43 is substantially constant in the circumferential direction and in the longitudinal direction of the cladding tube 1.
- a drilling fluid 44 is injected through the longitudinal channel 2 of the cladding tube 1.
- the drilling fluid 44 is first driven from the hole mouth side end 3 to the hollow sole side end 4 of the cladding tube 1 in a downward flow direction 45.
- the drilling fluid 44 After the drilling fluid 44 has passed the hollow sole side end 4 of the cladding tube 1, it is pressed through the transverse channels 17 of the drill bit 11 into the outer annular space 43. From here, the drilling fluid 44 flows through the prevailing pressure in an upward flow direction 46 to the mouth 47 of the borehole 41.
- the drilling mud 44 serves the purpose of transporting the material removed by the drill bit 11 to the surface of the foundation ground 42.
- the drilling mud is a hardenable medium 44, which initially serves as a liquid, in particular viscous, state for transporting the surface of the excavated soil, and after hardening in a solid state forms a strong bond between the casing 1 and ground 42 within the outer annulus 43 provides.
- a Cement purging consisting of a cement mortar or a cement mixture, or a resin rinse.
- the drilling process is continued until the drill bit 11 reaches a perforated sole 48 at a designated drill hole depth in the ground 42.
- the hole depth is selected such that the cladding tube 1 protrudes from the surface of the ground 42.
- the hole depth is selected such that the cladding tube 1 at its hole mouth-side end 3 is substantially flush with the surface of the ground 42.
- the cladding tube 1 was cut flat flush with the ground 42 after the drilling process.
- the support member 22 is inserted axially into the longitudinal channel 2 of the cladding tube 1.
- the support member is lowered down so deep in the hole 41 until it abuts against the stop 17 of the attachment 11 and thus is substantially flush with the hollow sole side end 4 of the cladding tube 1.
- a tensile and / or pressure-resistant connection between the support member 22 and inner wall 7 of the cladding tube 1 in the inner annular space 32 is formed. Since the cross-sectional thickness of the inner annular space 32 in the circumferential direction and in the longitudinal direction of the cladding tube 1 is substantially constant, the tension- and / or pressure-resistant connection is substantially homogeneous over the entire length of the cladding tube 1. By the winding-shaped surface structure 26 along the outer wall 25 of Support member 22, the quality of this connection is increased.
- a strong bond between the cladding tube 1 and ground 42 is additionally provided by a column within the outer annular space 43, which consists of the hardenable medium 44. Due to the winding-shaped surface structure 6 along the outer wall 5 of the cladding tube 1 and the quality of this compound is increased.
- a device 51 for anchoring a building structure resulting from this assembly method is disclosed in US Pat Fig. 7 shown.
- an anchoring member 52 for anchoring a building structure is arranged on the head portion 28 of the support member 22, which protrudes from the hole mouth side end 3 of the cladding tube 1.
- the anchoring member 52 comprises an anchoring nut, which is screwed onto the winding-shaped surface structure 26 along the outer wall 25 of the support member 22.
- the anchoring member 52 is fixed to the head portion 28 of the support member 22 so as not to contact the cladding tube 1. As a result, both a corrosion protection and protection against electrical conductivity is ensured by the cladding tube 1.
- the Fig. 8 shows an exemplary use of in Fig. 7 illustrated apparatus 51 for anchoring a Hoch effetsmastes 61.
- three appropriately designed anchoring devices 71, 72, 73 are provided.
- Two anchoring devices 71, 72 are disposed in the ground 42 directly below the high-performance mast 61.
- the anchoring devices 71, 72 extend into the ground 42 substantially parallel to a ground level.
- the portion of the anchoring devices 71, 72 projecting out of the ground 42 is cast in a concrete foundation 65 on which the overhead pole 61 is secured.
- the third anchoring device 73 is disposed in the ground 42 in horizontal spaced relation to the high power mast 61. Between the Hoch effetsmast 61 and the device 73, a support cable 62 is stretched. The support cable 62 is attached to the upper end of the high-conduction mast 61, on which the high voltage lines 63 are performed. On the other hand, the support cable 62 is attached to the anchoring member 52 of the anchoring device 73.
- the anchoring device 73 extends in a ground obliquely with respect to the ground plane in the ground 42. This extension direction of the anchoring device 73 substantially corresponds to the extension direction of the support cable 62 from the anchoring member 52. Thus, the Hoch effetsmast 61 is protected against tilting.
- the anchoring member 52 is in turn attached only to the support member 22 made of GRP, but does not come into contact with the cladding tube 1 made of steel, neither an electrical current through the cladding tube 1 nor a deterioration of the load capacity of the device 73 by corrosion of the cladding tube 1 to fear.
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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)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Piles And Underground Anchors (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14151602.1A EP2896750B1 (fr) | 2014-01-17 | 2014-01-17 | Dispositif et procédé d'ancrage d'une construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14151602.1A EP2896750B1 (fr) | 2014-01-17 | 2014-01-17 | Dispositif et procédé d'ancrage d'une construction |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2896750A1 true EP2896750A1 (fr) | 2015-07-22 |
EP2896750B1 EP2896750B1 (fr) | 2016-08-31 |
Family
ID=49955975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14151602.1A Active EP2896750B1 (fr) | 2014-01-17 | 2014-01-17 | Dispositif et procédé d'ancrage d'une construction |
Country Status (1)
Country | Link |
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EP (1) | EP2896750B1 (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19744322C1 (de) * | 1997-10-08 | 1999-01-28 | Juergen Kretschmar | Verfahren und Vorrichtung zum Einbringen von Ankern in sandigen, kiesigen oder bindigen Böden |
DE102005019168A1 (de) * | 2005-04-25 | 2006-10-26 | Friedr. Ischebeck Gmbh | Verwendung und Verfahren unter Verwendung eines Bohrinjektionsankers zur Drainage |
-
2014
- 2014-01-17 EP EP14151602.1A patent/EP2896750B1/fr active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19744322C1 (de) * | 1997-10-08 | 1999-01-28 | Juergen Kretschmar | Verfahren und Vorrichtung zum Einbringen von Ankern in sandigen, kiesigen oder bindigen Böden |
DE102005019168A1 (de) * | 2005-04-25 | 2006-10-26 | Friedr. Ischebeck Gmbh | Verwendung und Verfahren unter Verwendung eines Bohrinjektionsankers zur Drainage |
Also Published As
Publication number | Publication date |
---|---|
EP2896750B1 (fr) | 2016-08-31 |
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