Corrosion protection device, and method for corrosion-protected anchoring of an anchor element
Patent Information
- Application Number
- IN202317034550
- Authority / Receiving Office
- IN · IN
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2020-12-10
- Filing Date
- 2023-05-17
- Publication Date
- 2026-08-07
- Estimated Expiration
- 2041-11-30
Abstract
Description
Prior artThe invention relates to a corrosion protection device according to the preamble ofclaim 1, to a corrosion protection system according to claim 14, to a corrosion-protected embankment stabilization system according to claim 18 and to a methodfor corrosion-protected anchoring of a geotechnical anchor element according toclaim 20.It has already been proposed that geotechnical anchor elements be producedcompletely of stainless steel (see DE 33 20 460 C1 or EP 0 060 053 B1).However, geotechnical anchor elements of this kind are quite expensive incomparison to ordinary construction-steel anchors. As a further known alternativeto construction-steel anchors there are geotechnical anchor elements made ofmetallized fiber glass (see AU 2010206027 A1). However, geotechnical anchorelements of this kind have, on the one hand, less positive shearing characteristicsthan metal anchors and are, on the other hand, not fireproof, which means thatthey may lose their anchoring effect in the case of wood fires or the like. Moreover,plastic caps are already known, which are put over end regions of installedgeotechnical anchor elements (see CA 2 651 242 A1); in particular in view oftypical planning requirements in the field of natural hazards for at least 100-yeardurability, these do not offer sufficient permanent protection from corrosion as theplastic gets weathered and brittles over time, then allowing, for example, entry ofwater.The objective of the invention is in particular to provide a generic device withadvantageous corrosion protection properties, in particular with regard to aprotection of installed geotechnical anchor elements. The objective is achievedaccording to the invention by the features of patent claims 1, 14, 18 and 20 whileadvantageous implementations and further developments of the invention may begathered from the subclaims.Advantages of the inventionThe invention is based on a corrosion protection device, in particular a corrosionprotection adapter, at least for a protection against corrosion at least of an endregion of a geotechnical anchor element, which is in particular realized of acorrosion-sensitive metal or of a corrosion-sensitive metal alloy, e. g. aconstruction steel or a concrete steel, with at least one sleeve element which isconfigured at least for a mounting on the geotechnical anchor element,encompassing the end region of the geotechnical anchor element at least in acircumferential direction of the geotechnical element.It is proposed that the sleeve element is made at least largely of a corrosion-resistant metal, preferably a mechanically stable and at the same time corrosionresistant metal, and comprises at least an outer thread, which in particular extendsat least over a large portion of a total length of the sleeve element. As a result,advantageous corrosion protection properties are achievable, in particular withregard to a protection of an installed geotechnical anchor element againstcorrosion. Advantageously particularly favorable and particularly long-livedcorrosion protection, in particular of an end region of an anchor element installedin a ground and protruding from the ground, is achievable. It is advantageouslypossible to attain particularly favorable and particularly long-lived corrosionprotection at the same time as costs that are as low as possible.Advantageously cost-efficient corrosion protection for a geotechnical anchorelement is achievable. It is advantageously possible to attain subsequently-installed corrosion protection which is particularly favorable and particularly long-lived and which fully preserves a functionality of the geotechnical anchor element;such that, for example, screwing a fixing nut onto the end region of thegeotechnical anchor element is still possible without change. Advantageouslyconstant full load-bearing capacity is attainable even subsequently to theestablishment of the corrosion protection. Advantageously simple and fastproduction of a reliable corrosion protection is enabled. It is advantageouslypossible to attain a high mechanical stability of the corrosion protection, forexample against impacts, e. g. with respect to impacts of rocks falling onto the endregion of the geotechnical anchor element.By a "corrosion protection device" is in particular a device to be understood whichslows down and / or at least substantially prevents a corrosion or a weathering, inparticular a measurable change of a material of the geotechnical anchor element,having a negative effect on a functionality of the geotechnical anchor element, forexample a strength of the geotechnical anchor element or a tenacity of thegeotechnical anchor element, preferably a decomposition of a metal of thegeotechnical anchor element caused by oxidation. A "corrosion protection adapter"is in particular to mean an object, preferably an object realized separately from thegeotechnical anchor element, which is configured, by its installation at thegeotechnical anchor element, to augment a corrosion resistance of thegeotechnical anchor element, wherein full functionality of the geotechnical anchorelement is preserved at the same time, which means for example that a possibilityof screwing a nut onto the geotechnical anchor element protected by the corrosionprotection adapter remains at least substantially uninfluenced and / or at leastsubstantially unaffected in comparison to the geotechnical anchor element withouta corrosion protection adapter. By an "end region" of a geotechnical anchorelement is in particular a region to be understood that comprises a front-face endof the geotechnical anchor element as well as maximally 30 %, preferablymaximally 20 % and preferentially maximally 10 % of a subregion of the anchorelement continuously adjoining the front-face end. In particular, the end region isrealized at least as that portion of the geotechnical anchor element which iscomposed of a first subregion of the geotechnical anchor element, which isconfigured to protrude from the installation ground after installation, and anadjoining second subregion, which has at least 30 %, preferably at least 50 %,preferentially at least 100 % and particularly preferably maximally 300 % of alongitudinal extent of the first subregion.A "geotechnical anchor element" is in particular to mean a rock anchor, a rocknail,a groundnail, a rod anchor, a strand anchor, in particular a cable anchor with anouter thread, like the one described for example in the patent applicationDE 10 2018 125 782 A1, or something like that. By a "corrosion-sensitive metal" isin particular a metal, preferably a metal alloy, to be understood which differs froma stainless steel and differs from a superalloy, like for example Inconel, Incoloy,Hastelloy, Cronifer, Nicrofer or the like. A "stainless steel" is in particular to mean asteel with a chrome content of at least 10.5 %, the chrome content beingpreferably dissolved in an austenitic solid solution or in a ferritic solid solution.A "sleeve element" is in particular to mean a sleeve-shaped, preferably tube-shaped, solid elongate element, which encompasses an inner space at least in acircumferential direction and preferably at least partially in at least one longitudinaldirection as well. Preferably a sleeve element is to be understood as an end-sleeve-shaped element and / or as a sleeve-cap-shaped element, which forms atleast on a front face a longitudinal abutment for an element that is inserted in thesleeve element and fills the sleeve element at least largely, for example for thegeotechnical anchor element. Preferably the sleeve element is configured, in astate when mounted correctly, to fully encompass the end region of thegeotechnical anchor element, in particular at least in the circumferential directionof the geotechnical anchor element. In the state when mounted correctly, thegeotechnical anchor element in particular protrudes from the sleeve element onlyon one of the two front faces of the sleeve element. In particular, the sleeveelement is configured to be arranged on one of the ends of the geotechnicalanchor element, in particular on the end of the geotechnical anchor element thatprotrudes from the ground in the installed state of the geotechnical anchorelement. The term "encompass" is preferably to mean "encompass all around"and / or "encompass by 360°". Preferably, when being mounted on the geotechnicalanchor element, the sleeve element is screwed onto the geotechnical anchorelement. "Configured" is in particular to mean specifically designed and / orequipped. By an object being configured for a certain function is in particular to beunderstood that the object fulfills and / or carries out said certain function in at leastone application state and / or operation state.In particular, while the mounted sleeve element covers only a subregion of thegeotechnical anchor element, this subregion is in an installed (anchored) state ofthe geotechnical anchor element the only portion of the geotechnical anchorelement that is directly exposed to weather conditions, such that protection of thisportion of the geotechnical anchor element preferably allows achieving protectionof the entire geotechnical anchor element against corrosion. In particular, thesleeve element is configured to keep corrosively-acting influences, for exampleatmospheric influences, away from the geotechnical anchor element. In particular,the sleeve element is configured to form a surface with respect to corrosively-acting influences, for example atmospheric influences. A "large portion" and / or"largely" are in particular to mean 51 %, preferably 66 %, preferentially 75 %,particularly preferably 85 % and especially preferentially 95 %. Preferably a sleeveelement that is made at least largely of a corrosion-resistant metal differs from acorrosion protection coating (for example a zinc coating, a ZnAl coating, acorrosion protection varnish, or the like) and / or differs from a sleeve element thatis made of a corrosion-sensitive metal and is coated with a corrosion protectionlayer. "Mechanical stability" is in particular to meana resistance against deformations by slight impacts or by a self-weight. Thesleeve element is in particular realized in a flexurally rigid manner.A "corrosion-resistant metal" is in particular to mean a stainless steel or asuperalloy, like for example Inconel, Incoloy, Hastelloy, Cronifer, Nicrofer or thelike. In particular, the outer thread is wound around the surface of the sleeveelement in the circumferential direction. In particular, the outer thread is formeddirectly by the surface of the sleeve element. In particular, the outer threadextends over an entire longitudinal extent of the sleeve element. It is conceivablethat, analogously to typical construction-steel bars or concrete-steel bars (threadsteel bars), the outer thread is interrupted on two sides. The outer thread is inparticular configured for a screwing-on of a nut, in particular a clamping nut for thegeotechnical anchor element. In particular, the sleeve element and / or the outerthread has a constant and / or consistent diameter, in particular outer diameter,along a longitudinal direction of the sleeve element.It is further proposed that the sleeve element is realized as a cap that is at leastpartially, preferably completely, closed in a longitudinal direction of the sleeveelement. This advantageously allows attaining particularly favorable andparticularly long-lived corrosion protection, in particular of an end region of ananchor element installed in a ground, which protrudes from the ground.Advantageously, entry of water into an interstice between the sleeve element andthe geotechnical anchor element can be prevented. It is advantageously possibleto comprehensively insulate the geotechnical anchor element from the surroundingatmosphere. Advantageously simple installation of the sleeve element on thegeotechnical anchor element is achievable. In particular, the at least partiallyclosed cap forms the longitudinal abutment for the geotechnical anchor element.By the sleeve element being realized as a "partially closed cap" is in particular tobe understood that the sleeve element is realized in such a way that in a statewhen mounted on the geotechnical anchor element, an end of the sleeve elementcovers and / or screens at least a portion of a front face of the geotechnical anchorelement, preferably at least 20 %, preferentially at least 40 % and particularlypreferentially at least 66 % of the geotechnical anchor element, in a viewingdirection extending along the longitudinal direction. In particular, the longitudinaldirection is at least substantially orthogonal to the front face of the geotechnicalanchor element, A completely closed cap in particular closes the front face of thegeotechnical anchor element completely in the longitudinal direction. A "cap" is inparticular to mean a closely-fitting closure for the end region of the geotechnicalanchor element, which is preferably realized separately from the geotechnicalanchor element,It is moreover proposed that the sleeve element comprises an inner thread. Thisadvantageously allows achieving particularly favorable and / or particularly closefitting of the sleeve element on the geotechnical anchor element, thus enablingparticularly favorable and particularly long-lived corrosion protection.Advantageously this facilitates screwing the sleeve element onto the geotechnicalanchor element, thus enabling particularly simple and failure-proof mounting. Inparticular, the inner thread is wound around an inner surface of the sleeve elementin the circumferential direction. In particular, the inner thread is formed directly bya surface of the sleeve element. In particular, the inner thread extends over anentire longitudinal extent of the sleeve element. It is conceivable that, analogouslyto typical construction-steel bars or concrete-steel bars (thread steel bars), theinner thread is interrupted on two sides and is in particular formed so as to beround, respectively tube-shaped, between the interruptions. The inner thread is inparticular configured for a screwing of the sleeve element onto the geotechnicalanchor element, which often has a construction-steel thread or a rebar thread. Inparticular, the inner thread has a constant and / or consistent diameter, in particularinner diameter, along a longitudinal direction of the sleeve element. In particular,the inner thread and the outer thread have at least substantially identical threadruns, preferably at least substantially identical thread pitches, thread directions,thread forms and / or thread depths. "Substantially identical" is in particular to meanidentical but for manufacturing tolerances. However, it is alternatively alsoconceivable that the inner thread and the outer thread differ at least with respect totheir thread pitches, thread directions, thread forms and / or thread depths.Preferably the inner thread is realized as a left-handed thread. However,alternatively an implementation of the inner thread as a right-handed thread is alsoconceivable. Preferably the outer thread is realized as a left-handed thread.However, alternatively an implementation of the outer thread as a right-handedthread is also conceivable.It is further proposed that the inner thread in particular comprises a thread crestand that the outer thread in particular comprises a thread groove, wherein thethread crest of the inner thread at the same time forms the thread groove of theouter thread (and vice versa). Preferably all thread crests of all inner threads at thesame time form all thread grooves of all outer threads (and vice versa). Thisadvantageously enables particularly favorable and / or effective force transfer of anut screwed on the sleeve element on the outside to the geotechnical anchorelement. It is advantageously achievable that the sleeve element has an at leastsubstantially constant wall thickness. "At least substantially constant" is inparticular to mean with a fluctuation range of less than 3 %, preferably of less than5 % and preferentially of less than 10 % of an average value. In particular, the wallthickness of the sleeve element is at least 1 mm, preferably at least 2 mm,advantageously at least 3 mm, preferentially at least 4 mm and particularlypreferably at least 5 mm. In particular, a tip of the thread crest of the inner threadpoints towards an interior of the sleeve element. In particular, a tip of a threadcrest of the outer thread points in a direction away from the interior of the sleeveelement. In particular, a bottom of a thread groove of the inner thread points in thedirection away from the interior of the sleeve element. In particular, a bottom of thethread groove of the outer thread points toward the interior of the sleeve element.In addition, it is proposed that the inner thread of the sleeve element and / or theouter thread of the sleeve element are / is realized as (a) thread(s) having a coarsethread pitch of more than 5 mm, preferably more than 7 mm, advantageously morethan 9 mm, especially advantageously more than 12 mm, preferentially more than15 mm and particularly preferably less than 21 mm. This allows attainingadvantageous mounting and tightness properties. In particular, the inner thread ofthe sleeve element and / or the outer thread of the sleeve element are / is realized asa glide thread, preferably a round thread, preferentially a metrical round threadhaving a coarse pitch. It is in particular conceivable that the inner thread of thesleeve element and / or the outer thread of the sleeve element are / is realized as apipe thread for a connection to the geotechnical anchor element where pressure-tight joints are made on the thread. In particular, a thread having a thread profileslightly differing from a completely round and / or from an evenly rounded threadprofile, being for example slightly asymmetrical, is also considered as a roundthread in the meaning of the present disclosure. Alternatively the inner thread ofthe sleeve element and / or the outer thread of the sleeve element may also berealized as a trapezoid thread with the coarse thread pitch or as a roundedtrapezoid thread with the coarse thread pitch. In particular, the geotechnicalanchor element has an outer thread. In particular, a thread pitch, a thread directionand / or a thread form of the inner thread of the sleeve element is at leastsubstantially complementary to a thread pitch, a thread direction and / or a threadform of the outer thread of the geotechnical anchor element. In particular, the innerthread of the sleeve element is configured for a mutual engagement with an outerthread of the geotechnical anchor element and / or with thread ribs of thegeotechnical anchor element. In particular, the inner thread of the sleeve elementis configured to be screwed onto the outer thread of the geotechnical anchorelement and / or onto the thread ribs of the geotechnical anchor element. Inparticular, a thread pitch, a thread direction and / or a thread form of the outerthread of the sleeve element corresponds at least substantially to a thread pitch, athread direrction and / or a thread form of the outer thread of the geotechnicalanchor element. In particular, the outer thread of the sleeve element and the outerthread of the geotechnical anchor element are realized at least substantiallyidentically to each other except for their diameters. Preferably the thread pich iscalculated as a distance between two neighboring maxima, in particular threadcrests, of a thread turn, in the longitudinal direction of the sleeve element.Beyond this it is proposed that the sleeve element is designed for a force transferbetween a nut that is screwed onto the outer thread of the sleeve element, inparticular the corrosion protection device, and the geotechnical anchor element.This advantageously allows achieving particularly favorable and particularly longl-ived subsequently-installed corrosion protection, which preserves a functionality ofthe geotechnical anchor element completely. Advantageously, also after anestablishment of the corrosion protection, a constant full load-bearing capacity isachievable. In order to obtain said force transfer, a particularly close fit is providedbetween the inner thread of the sleeve element and the outer thread of thegeotechnical anchor element. In particular, such a force transfer is madeimpossible by a protective paint and / or varnishing and / or by a protective coating,e. g. a galvanization. Paint coats, coatings and / or varnishings are often damagedwhen the nut is screwed on or in an impact event or shock event, thus losing theirprotective effect with respect to corrosion. In particular, the sleeve element ismade of a metal, preferably of a steel, having a tensile strength of at least250 N / mm2, preferably of at least 400 N / mm2 and preferentially of at least600 N / mm2 .If the sleeve element is made at least largely, preferably completely (besides, asthe case may be, an optional coating or paint coat) of a stainless steel, inparticular of a stainless special steel (also: rust-resistant steel or non-rustingsteel), advantageus corrosion protection characteristics are achievable, inparticular with regard to a protection of an installed geotechnical anchor elementagainst corrosion. In particular, the sleeve element is made of a stainless steelhaving a material number according to the standard DIN EN 10027-2:2015-07,which is between 1.4001 and 1.4462, for example of a stainless steel having theDIN EN 10027-2:2015-07 material number 1.4301, 1.4571, 1.4401, 1.4404 or1.4462.Furthermore, it is proposed that the sleeve element is realized in a one-partimplementation, preferably a monolithic implementation. In this way high level oftightness of the sleeve element and thus particularly favorable corrosion protectionis achievable. Moreover, simple handling and / or simple installation are / isadvantageously facilitated. "In a one-part implementation" is in particular to meanformed in one piece. This one piece is preferably produced from a single blank, amass and / or a cast, particularly preferably in a sheet-bending procedure.However, it is alternatively conceivable that the sleeve element is produced atleast in a two-part or in a multi-part implementation, for example from twointerconnected half-shells or from a pipe element and a cover part closing the pipeelement in the longitudinal direction.If the sleeve element is a prefabricated component realized separately from thegeotechnical anchor element, advantageously a simple installation is enabled.This also advantageously allows providing a plurality of different kinds and types ofgeotechnical anchor elements with the corrosion protection device.Advantageously a high degree of flexibility is achievable. It is moreoveradvantageously possible to keep material input and / or total costs low. In particular,the sleeve element differs from a paint coat of the geotechnical anchor element,from a varnishing of the geotechnical anchor element, from a coating of thegeotechnical anchor element and / or from a covering of the geotechnical anchorelement with a flexible material, e. g. a (plastic or metal) film. It is conceivable thatthe sleeve element is implemented of a stainless-steel sheet pressed onto thegeotechnical anchor element but preferentially the sleeve element is implementeddifferently from a stainless-steel sheet pressed onto the geotechnical anchorelement.It is also proposed that an inner space of the sleeve element is at least partiallyfilled with a deformable sealing mass. This advantageously allows achievingparticularly high tightness of the sleeve element, in particular with respect to acontact of the geotechnical anchor element with water and / or with air.Advantageously, particularly effective and / or particularly long-lived corrosionprotection are / is attainable. In particular, the deformable sealing mass may berealized as a grease, for example lubricating grease, or as a sealing agent. Inparticular, the deformable sealing mass is realized as a semifluid, viscousmaterial. It is conceivable that the deformable sealing mass is made of a curablematerial, like for example cement paste. In particular, the inner space of the sleeveelement is realized as a receiving space of the sleeve element for arranging thegeotechnical anchor element. In particular, in the state when the sleeve element ismounted on the geotechnical anchor element, an interstice between the sleeveelement and the geotechnical anchor element is filled with the deformable sealingmass.Alternatively or additionally it is proposed that an inner space of the sleeveelement is at least partially filled with a deformable adhesive mass. Thisadvantageously allows achieving particularly high tightness of the sleeve element.Is is advantageously possible to attain particularly effective and / or particularlylong-lived corrosion protection. Moreover, advantageously a particularly favorableforce transfer is achievable between the nut screwed that is screwed onto theouter thread of the sleeve element and the geotechnical anchor element. Inparticular, the deformable adhesive mass creates in the mounted state asubstance-to-substance adhesive bond between the sleeve element and thegeotechnical anchor element. Preferably the adhesive mass is viscous at first andhardens after the mounting while creating the substance-to-substance bond. Inparticular, in the state when the sleeve element is mounted on the geotechnicalanchor element, the interstice between the sleeve element and the geotechnicalanchor element is filled with the deformable adhesive mass. In particular, theadhesive mass may at the same time be the sealing mass or vice versa.Beyond this it is proposed that the sleeve element is mountable, in particularscrewable, onto the geotechnical anchor element without a tool. Thisadvantageously enables particularly simple and / or cost-efficient mounting. Inparticular, the sleeve element can be screwed manually onto the geotechnicalanchor element, in particular onto the outer thread or onto the thread ribs of thegeotechnical anchor element. In particular, the sleeve element can be screwedonto the geotechnical anchor element on-site during a mounting of thegeotechnical anchor element. However, alternatively it is also conceivable that thesleeve elements are pre-mounted on the geotechnical anchor elements before amounting of the geotechnical anchor elements.In addition, it is proposed that the sleeve element has a wall thickness that isequivalent to at least 1.2 %, preferably to at least 2.5 %, advantageously to atleast 3.5 %, preferentially to at least 5 % and particularly preferably to maximally15 % of a maximal outer diameter of the sleeve element. In this way a high degreeof stability of the sleeve element is advantageously achievable, which in particularresults in advantageously preserving the corrosion protection also after an impactevent, for example a rockfall event, that hits the sleeve element. In particular, themaximal outer diameter of the sleeve element is given by the thread crests of theouter thread of the sleeve element. In particular, the wall thickness of the sleeveelement is equivalent to at least 30 %, preferably at least 45 % and preferentiallyat least 100 % of a depth of a thread turn of the outer thread (distance, measuredperpendicularly to the longitudinal direction of the sleeve element, between athread crest and a thread groove of the outer thread of the sleeve element). Inparticular, a longitudinal extent of the sleeve element along the longitudinal axis isat least 300 mm, in particular at least 450 mm. In particular, the longitudinal extentof the sleeve element along the longitudinal axis is maximally 2,000 mm,preferably no more than 1,500 mm. In particular, the wall thickness of the sleeveelement is at least 0.6 mm, preferably at least 1 mm, preferentially at least 1.5 mmand particularly preferentially no more than 3 mm. In particular, the outer diameterof the sleeve element is at least 16 mm, advantageously at least 20 mm,preferably at least 25 mm, preferentially at least 30 mm and especiallypreferentially maximally 50 mm.It is further proposed that the sleeve element has along the longitudinal direction arecurrent constant cross section. Preferably the outer thread of the sleeve elementand / or the inner thread of the sleeve element have / has a constant cross section inthe longitudinal direction, which in particular means that the diameters of thethread crests and the diameters of the thread grooves remain at least substantiallyconstant along the longitudinal direction. This advantageously permits flexiblecutting-to-length of the sleeve element to a desired length of the sleeve element,which is adapted to a certain geotechnical anchor element. In particular, thesleeve element, preferably the outer thread of the sleeve element and / or the innerthread of the sleeve element, are / is free of a tapering in the longitudinal directionand / or free of a widening in the longitudinal direction.Furthermore, a corrosion protection system is proposed, with the corrosionprotection device and with the geotechnical anchor element, which is in particularrealized of the corrosion-sensitive metal. This advantageously enables aninstallation of the geotechnical anchor element, with a high level of corrosionprotection.It is also proposed that the corrosion protection device is mounted on thegeotechnical anchor element in such a way that interstices between the sleeveelement and the geotechnical anchor element are closed toward the environmentin a water-tight manner and / or filled with the deformable sealing mass and / or withthe deformable adhesive mass. This permits attaining advantageous corrosionprotection characteristics, in particular with regard to a protection of an installedgeotechnical anchor element against corrosion. Advantageously, cost-efficinentcorrosion protection for a geotechnical anchor element is achievable.It is further proposed that the sleeve element is mounted on the geotechnicalanchor element in such a way that, in a state of the geotechnical anchor elementbeing anchored in a ground, a subregion of the sleeve element, in particular asubregion of the sleeve element that is arranged opposite the side of the sleeveelement that is at least partially closed in a cap-like manner, is sunk in the ground.In this way particularly high tightness of the sleeve elemnent is advantageouslyachievable, which allows preventing an entry of humidity or air into the intersticebetween the sleeve element and the geotechnical anchor element, thus enabling ahigh degree of corrosion protection. Advantageously, as a result of preventing anentry of humidity into the interstices, contact corrosion between the sleeve elementand the geotechnical anchor element can be averted. In particular, the portion ofthe sleeve element that is sunk in the ground is mortared and / or concreted into theground together with the geotechnical anchor element. In particular, the subregionof the sleeve element is sunk into the ground with its non-closed end region. Inparticular, the subregion of the sleeve element in which the geotechnical anchorelement protrudes from the sleeve element is sunk into the ground.If in the anchored state of the geotechnical anchor element at least a quarter,preferably at least a third, preferentially at least 50 % and particularly preferablymaximally 75 % of a total longitudinal extent of the sleeve element is arranged soas to be sunk in the ground, an especially favorable corrosion protection effect isadvantageously achievable.Furthermore, a corrosion-protected embankment stabilization system is proposed,with the corrosion protection system anchored in a ground, with a wire nettingmade of high-tensile steel, with a clamping plate and with a nut, wherein theclamping plate is threaded into the geotechnical anchor element that is anchoredin the ground and furnished with the sleeve element, and wherein - by means ofthe nut that is screwed onto the sleeve element - the clamping plate is pressedonto the wire netting in a longitudinal direction of the geotechnical anchor elementsuch that the wire netting is fastened on the ground in an at least substantiallypositionally fixed manner. This advantageously allows achieving especiallycorrosion-protected and / or long-lived implementation of an embankmentstabilization.If moreover the clamping plate, the nut and / or the wire netting have / has at least astainless steel surface or are / is completely made of the stainless steel, thegeotechnical anchor element being made of a corrosion-sensitve metal or of acorrosion-sensitive metal alloy, in particular of a construction steel, a high level ofcorrosion protection of the entire embankment stabilization system is achievable inspite of cost-efficient standard anchor elements being used.Beyond this, a method is proposed for a corrosion-protected anchoring of thegeotechnical anchor element which is made of the corrosion-sensitive metal or ofthe corrosion-sensitive metal alloy, in particular of the construction steel, whereinin at least one method step the sleeve element, which is at least largely made ofthe corrosion-resistant, preferably mechanically stable and corrosion-resistant,metal and comprises the outer thread, is mounted in the end region of thegeotechnical anchor element, wherein in at least one further method step thesleeve element gets closed toward the environment in a humidity-tight manner,and wherein in at least one further method step the geotechnical anchor elementis brought into the ground in such a way that at least a subregion of the sleeveelement that is mounted on the geotechnical anchor element is sunk into theground, in particular mortared into the ground. This advantageousl allows aninstallation of the geotechnical anchor element that is made of the corrosion-sensitive metal, which provides a high degree of corrosion protection.In addition, it is in particular proposed that the sleeve element is produced as aflute tube. Alternatively it is proposed that the sleeve element is produced by re-forming, in particular by pressing onto a mold or by blowing into a mold.Alternatively it is proposed that the sleeve element is produced by deep-drawing.Moreover, it is in particular proposed that the corrosion protection system isconfigured to be used for static and / or dynamic loads, including impact stress.Conceivable exemplary applications of the corrosion protection system areapplications as adapters for rocknails, for example in a rock stabilization, asadapters for loose-rock anchors, for example in an embankment stabilization, asadapters for foundation anchors, for example for rockfall barriers or pedestrianbridges, as adapters for anchors in a context of mining applications and / or tunnelconstruction, and / or as adapters for tensioning and / or connection elements inconstructions, for example in a context of roof constructions and / or glass facades.The corrosion protection device according to the invention, the corrosionprotection system according to the invention, the corrosion-protected embankmentstabilization system according to the invention and the method according to theinvention are herein not to be limited to the application and implementationdescribed above. In particular, in order to fulfill a functionality that is describedhere, the corrosion protection device according to the invention, the corrosionprotection system according to the invention, the corrosion-protected embankmentstabilization system according to the invention and the method according to theinvention may have a number of individual elements, components, method stepsand units that differs from a number given here.DrawingsFurther advantages will become apparent from the following description of thedrawings. In the drawings an exemplary embodiment of the invention is illustrated.The drawings, the description and the claims contain a plurality of features incombination. Someone skilled in the art will purposefully also consider the featuresseparately and will find further expedient combinations.It is shown in:Fig. 1 a schematic view of a portion of a corrosion-protectedembankment stabilization system with a corrosion protectionsystem comprising a corrosion protection device,Fig. 2 a schematic side view of a sleeve element of the corrosionprotection device,Fig. 3 a schematic illustration of a section-wise cut portion of the sleeveelement,Fig. 4 a schematic perspective view of a first side (underside) of thesleeve element,Fig. 5 a schematic perspective view of a second side (upper side) of thesleeve element,Fig. 6 a further schematic side view of a portion of the sleeve element ina state when screwed onto a geotechnical anchor element of theembankment stabilization system,Fig. 7 a schematic sectional view of the embankment stabilizationsystem with the corrosion protection system that comprises thecorrosion protection device, andFig. 8 a schematic flow chart of a method for a corrosion-protectedanchoring of the geotechnical anchor element.Description of the exemplary embodimentFigure 1 shows a schematic view of a portion of a corrosion-protectedembankment stabilization system 50. The embankment stabilization system 50 isspread across a ground 46. The embankment stabilization system 50 protects anenvironment of the ground 46 from erosion. The embankment stabilization system50 comprises a wire netting 52. The wire netting 52 is made of high-tensile steelwire. The high-tensile steel wire of the wire netting 52 has a tensile strength of atleast 800 N / mm², preferably of at least 1,000 N / mm² and preferentially of at least1,500 N / mm². The high-tensile steel wire of the wire netting 52 has a tensilestrength of maximally 3,000 N / mm², preferably of maximally 2,500 N / mm² andpreferentially of maximally 2,000 N / mm². The wire netting 52 has a stainless steelsurface. The wire netting 52 is made of a stainless steel. The wire netting 52 isconfigured to be spread two-dimensionally across a surface of the ground 46, forexample across an embankment, a rockwall or the like.The embankment stabilization system 50 comprises a clamping plate 54. Theclamping plate 54 lies upon the wire netting 52. The clamping plate 54 isconfigured for retaining the wire netting 52 on the ground 46. The clamping plate54 is configured for pressing the wire netting 52 to the ground 46. The clampingplate 54 is configured to span over several meshes 72 of the wire netting 52. Theclamping plate 54 is exemplarily realized as a spike plate configured to engage inseveral meshes 72 of the wire netting 52. For an engagement in the meshes 72 ofthe wire netting 52, the clamping plate 54 that is embodied as a spike platecomprises several claw elements 74, which are angled towards the ground 46.Alternatively, the clamping plate 54 may as well be realized as an at leastsubstantially planar plate without claw elements 74. The clamping plate 54 ismade of a high-tensile steel but may alternatively also be made of a steel that isnot high-tensile. The clamping plate 54 is realized in a monolithic fashion. Theclamping plate 54 is made of a stainless steel. The clamping plate 54 has a centralopening 76 for receiving at least one geotechnical anchor element 12 (see alsofigure 7) of the embankment stabilization system 50. The geotechnical anchorelement 12 is made of a corrosion-sensitive metal or of a corrosion-sensitive metalalloy. The geotechnical anchor element 12 is made of a construction steel. Theembankment stabilization system 50 comprises a sleeve element 14. The sleeveelement 14 is put over the geotechnical anchor element 12 in an end region 10 ofthe geotechnical anchor element 12.The embankment stabilization system 50 comprises a nut 30. The nut 30 isconfigured to retain the clamping plate 54 in the state of being pressed to theground 46. The nut 30 is made of a stainless steel. The nut 30 is screwed onto thegeotechnical anchor element 12 which has been threaded into the central opening76 of the clamping plate 54, more precisely onto the sleeve element 14encompassing the geotechnical anchor element 12. The sleeve element 14 isdesigned for a force transfer between the nut 30 that is screwed onto an outerthread 16 of the sleeve element 14 and the geotechnical anchor element 12. Bythe screwing-on of the nut 30, the nut 30 is pressed against the clamping plate 54,which is in its turn pressed against the ground 46 and against the wire netting 52in a longitudinal direction 80 of the geotechnical anchor element 12. By means ofthe fastening method described, the wire netting 52 is fastened on the ground 46in a positionally fixed manner. The embankment stabilization system 50 optionallycomprises a washer 58 which is, in the mounted state of the embankmentstabilization system 50, arranged between the nut 30 and the clamping plate 54.The embankment stabilization system 50 comprises a corrosion protection system42. The corrosion protection system 42 is anchored in the ground 46. Thecorrosion protection system 42 is configured to form a corrosion protection for thegeotechnical anchor element 12. The corrosion protection system 42 comprises acorrosion protection device 44.Figure 2 shows a schematic side view of the corrosion protection device 44. Thecorrosion protection device 44 comprises the sleeve element 14. The corrosionprotection device 44, in particular the sleeve element 14, forms a corrosionprotection adapter for the geotechnical anchor element 12. The corrosionprotection device 44, in particular the sleeve element 14, is configured for aprotection of the end region 10 of the geotechnical anchor element 12 againstcorrosion. The sleeve element 14 is configured to encompass the end region 10 ofthe geotechnical anchor element 12 in the circumferential direction of thegeotechnical anchor element 12. The sleeve element 14 is configured for a closureof the encompassment of the end region 10 of the geotechnical anchor element 12in the longitudinal direction 80 of the geotechnical anchor element 12. The sleeveelement 14 is configured for a mounting on the geotechnical anchor element 12such that the end region 10 of the geotechnical anchor element 12 isencompassed in the circumferential direction of the geotechnical anchor element12. The sleeve element 14 is configured for a mounting on the geotechnicalanchor element 12 such that the end region 10 of the geotechnical anchor element12 is closed in the longitudinal direction 80. The sleeve element 14 is embodied asa cap that is closed in a longitudinal direction 18 of the sleeve element 14. On afront face 60 of the sleeve element 14, the sleeve element 14 forms an abutmentfor the geotechnical anchor element 12. The longitudinal direction 18 of the sleeveelement 14 and the longitudinal direction 80 of the geotechnical anchor element 12are in the mounted state of the sleeve element 14 oriented parallel to each other.The sleeve element 14 is made of a corrosion-resistant metal. The sleeve element14 is made of a stainless steel. The sleeve element 14 is realized in a one-partimplementation. The sleeve element 14 is realized in a monolithic fashion. Thesleeve element 14 is realized as a prefabricated component which is implementedseparately from the geotechnical anchor element 12. The sleeve element 14comprises the outer thread 16. The outer thread 16 is configured for the nut 30 tobe screwed thereon (see figure 1). The outer thread 16 extends over an entirelongitudinal extent 78 of the sleeve element 14. The outer thread 16 is constantover the entire longitudinal extent 78 of the sleeve element 14. The longitudinalextent 78 of the sleeve element 14 shown exemplarily in figure 2 amounts to700 mm.Figure 3 shows schematically a section-wise cut portion of the sleeve element 14.The outer thread 16 has a thread pitch 28. The outer thread 16 is embodied as a(rounded) trapezoid thread. The outer thread 16 is embodied as a thread with acoarse thread pitch 28 of more than 5 mm. In the case of the sleeve element 14shown in figure 3 by way of example, the thread pitch 28 of the outer thread 16 isapproximately 13 mm. The sleeve element 14 is preferably free of further outerthreads, i. e. of further outer thread turns.The sleeve element 14 comprises an inner space 32. The sleeve element 14 isrealized so as to be hollow in its interior (see also figure 4). The sleeve element 14is embodied as a cap that is closed on one side in the longitudinal direction 18 ofthe sleeve element 14 (see figure 5). The sleeve element 14 has an inner thread20. The inner thread 20 is arranged in the interior space 32 of the sleeve element14. The inner thread 20 has a thread pitch 28. The thread pitches 28 of the innerthread 20 and of the outer thread 16 are identical to each other. The inner thread20 is embodied as a (rounded) trapezoid thread. The (rounded) trapezoid threadhas thread flanks 94, 96, which together span a flank angle 98. The flank angle 98is approximately 90°. The inner thread 20 is embodied as a thread with a coarsethread pitch 28 of more than 5 mm. In the case of the sleeve element 14 that isshown in figure 3 by way of example, the thread pitch 28 of the inner thread 20 isapproximately 13 mm. The sleeve element 14 is preferably free of further innerthreads, i. e. free of further inner thread turns.The sleeve element 14 has a wall thickness 38. In the case shown in figure 3 byway of example, the wall thickness 38 is approximately 1 mm. The inner thread 20has a thread crest 22. A minimal inner diameter 86 of the sleeve element 14,formed by the thread crest 22 of the inner thread 20, is equivalent to less than a30-fold of the wall thickness 38 of the sleeve element 14. In the case shown byway of example, the minimal inner diameter 86 is approximately 25.6 mm. Theinner thread 20 has a thread groove 82. The inner thread 20 has a thread depth88. The thread depth 88 of the inner thread 20 is more than a four-fold of the wallthickness 38. The thread depth 88 of the inner thread 20 is less than a ten-fold ofthe wall thickness 38. In the case shown in figure 3 by way of example, the threaddepth amounts to approximately 4.3 mm.The outer thread 16 has a thread crest 84. A maximal outer diameter 40 of thesleeve element 14, formed by the thread crest 84 of the outer thread 16, isequivalent to more than a 30-fold of the wall thickness 38 of the sleeve element14. The maximal outer diameter 40 of the sleeve element 14, formed by the threadcrest 84 of the outer thread 16, is equivalent to less than a 40-fold of the wallthickness 38 of the sleeve element 14. In the case shown by way of example, themaximal outer diameter 40 amounts to approximately 31.9 mm. The outer thread16 has a thread groove 24. The outer thread 16 has a thread depth 92. The threaddepth 92 of the outer thread 16 is more than a four-fold of the wall thickness 38.The thread depth 92 of the outer thread 16 is less than a ten-fold of the wallthickness 38. In the case shown in figure 3 by way of example, the thread depth92 of the outer thread 16 is approximately 4.3 mm. The thread depths 88, 92 of theinner thread 20 and the outer thread 16 are approximately identical. The threadcrest 22 of the inner thread 20 of the sleeve element 14 at the same time formsthe thread groove 24 of the outer thread 16 of the sleeve element 14. The wallthickness 38 is thus equivalent to at least 2.5 % of the maximal outer diameter 40of the sleeve element 14.Figure 6 shows a schematic view of the sleeve element 14 and the geotechnicalanchor element 12. The geotechnical anchor element 12 comprises an outerthread 90. The sleeve element 14 can be mounted onto the geotechnical anchorelement 12. The sleeve element 14 can be screwed onto the geotechnical anchorelement 12. The inner thread 20 of the sleeve element 14 can be screwed onto theouter thread 90 of the geotechnical anchor element 12. The sleeve element 14 canbe screwed onto the geotechnical anchor element 12 without a tool (see in figure 6the arrow 100 indicating screwing-on and screwing-off directions).Figure 7 shows a schematic sectional view of the embankment stabilizationsystem 50 with the corrosion protection system 42 comprising the corrosionprotection device 44, wherein the geotechnical anchor element 12, in particular thecorrosion protection system 42, is sunk into the ground 46 along the longitudinaldirection 18 of the geotechnical anchor element 12. The corrosion protectionsystem 42 comprises the geotechnical anchor element 12. The corrosionprotection system 42 comprises the sleeve element 14. The sleeve element 14 ismounted on the geotechnical anchor element 12. The corrosion protection device44 is mounted on the geotechnical anchor element 12 in such a way thatinterstices 62 (see the enlarged section of a portion of the corrosion protectionsystem 42 in figure 7) between the sleeve element 14 and the geotechnical anchorelement 12 are closed towards the environment 66 in a water-tight manner. Theinner space 32 of the sleeve element 14 is filled at least partially with a deformablesealing mass 34. The interstice 62 of the corrosion protection system 42 betweenthe geotechnical anchor element 12 and the sleeve element 14 screwed onto thegeotechnical anchor element 12 is filled with the deformable sealing mass 34. Theinner space 32 of the sleeve element 14 is filled at least partially with a deformableadhesive mass 36. The interstice 62 of the corrosion protection system 42between the geotechnical anchor element 12 and the sleeve element 14 screwedonto the geotechnical anchor element 12 is filled with the deformable adhesivemass 36.The sleeve element 14 is mounted on the geotechnical anchor element 12 in sucha way that, in a state when the geotechnical anchor element 12 is anchored in theground 46 (for example in the states shown in figures 1 and 7), a subregion 48 ofthe sleeve element 14 is also sunk in the ground 46. The geotechnical anchorelement 12 is mortared in. The geotechnical anchor element 12 is surrounded bymortar 108. The sleeve element 14 is mounted on the geotechnical anchorelement 12 in such a way that, in the state when the geotechnical anchor element12 is anchored in the ground 46 (for example in the states shown in figures 1 and7), the subregion 48 of the sleeve element 14 is mortared in the ground 46together with the geotechnical anchor element 12. In the anchored / mortared-instate of the geotechnical anchor element 12, at least a third of the total lengthextent 78 of the sleeve element 14 is arranged so as to be sunk in the ground 46.In the anchored / mortared-in state of the geotechnical anchor element 12, thesleeve element 14 extends from the end region 10 of the geotechnical anchorelement 12, which is situated outside (above the ground 46), as far as a subregion48 of the geotechnical anchor element 12, which is situated within (below theground 46). In the subregion 48 the sleeve element 14 is surrounded by the mortar108. In order to ensure tight closure of an open side of the sleeve element 14 (seealso figure 4), the sleeve element 14 that is screwed onto the geotechnical anchorelement 12 is partially also mortared / sunk in the ground 46.Figure 8 shows a schematic flow chart of a method for corrosion-protectedanchoring of the geotechnical anchor element 12 that is made of a corrosion-sensitive metal or of a corrosion-sensitive metal alloy. In at least one method step102 an anchor borehole 104 is drilled into the ground 46. In at least one furthermethod step 56 the sleeve element 14, which is made at least largely of thecorrosion-resistant metal and comprises the outer thread 16, is mounted in the endregion 10 of the geotechnical anchor element 12. In the method step 56 the sleeveelement 14 is screwed onto the outer thread 90 of the geotechnical anchorelement 12. In at least one further method step 68 the geotechnical anchorelement 12 is brought into the ground 46 in such a way that at least a subregion48 of the sleeve element 14 mounted on the geotechnical anchor element 12 issunk into the ground 46. In at least one substep 106 of the method step 68, thegeotechnical anchor element 12 is inserted into the anchor borehole 104. Beforeor after an insertion of the geotechnical anchor element 12 into the anchorborehole 104, the sleeve element 14 is screwed onto the geotechnical anchorelement 12 in such a way that the sleeve element 14 covers the end region 10 ofthe geotechnical anchor element 12, which protrudes from the ground 46. Beforeor after an insertion of the geotechnical anchor element 12 into the anchorborehole 104, the sleeve eleent 14 is screwed onto the geotechnical anchorelement 12 in such a way that the sleeve element 14 partially protrudes into theanchor borehole 104 when the geotechnical anchor element 12 has reached itsanchoring position in the ground 46. In the mounted state at least a third of thetotal longitudinal extent 78 of the sleeve element 14 is situated within the anchorborehole 104. Alternatively to a screwing-on of the sleeve element 14 onto thegeotechnical anchor element 12 after the insertion of the geotechnical anchorelement 12 into the anchor borehole 104, it is also conceivable that the sleeveelement 14 is already premounted on the geotechnical anchor element 12 outsidethe anchor borehole 104. In at least one further method step 64 the sleeveelement 14 is closed towards an environment 66 in a humidity-tight manner. Inorder to achieve the humidity-tight closure, at least a portion of the subregion 48 ofthe sleeve element 14 which protrudes into the anchor borehole 104, in particularthe entire section of the sleeve element 14 which protrudes into the anchorborehole 104, is mortared into the ground 46, in particular into the anchor borehole104, together with the geotechnical anchor element 12. In at least one furthermethod step 110 the wire netting 52 and / or the clamping plate 54 are / is put overthe geotechnical anchor element 12. In at least one further method step 112 thenut 30 is screwed onto the sleeve element 14 which encompasses the end region10 of the geotechnical anchor element 12. In the method step 112 the nut 30 isscrewed onto the sleeve element 14 in such a way that the clamping plate 54 isfirmly pressed against the ground 46 and / or against the wire netting 52. Aftercompletion of the installation process described, only corrosion-protectedelements of the embankment stabilization system 50, in particular elements of theembankment stabilization system 50 which are made of stainless steel, areexposed to the environment 66, i. e. to the atmosphere surrounding theembankment stabilization system 50.Reference numerals10 end region12 geotechnical anchor element14 sleeve element16 outer thread18 longitudinal direction20 inner thread22 thread crest24 thread groove28 thread pitch30 nut32 inner space34 sealing mass36 adhesive mass38 wall thickness40 outer diameter42 corrosion protection system44 corrosion protection device46 ground48 subregion50 embankment stabilization system52 wire netting54 clamping plate56 method step58 washer60 front face62 interstice64 method step66 environment68 method step72 mesh74 claw element76 opening78 longitudinal extent80 longitudinal direction82 thread groove84 thread crest86 inner diameter88 thread depth90 outer thread92 thread depth94 thread flank96 thread flank98 flank angle100 arrow102 method step104 anchor borehole106 substep108 mortar110 method step112 method step
Claims
1. A corrosion protection device (44), in particular a corrosion protection adapter, at least for a protection against corrosion at least of an end region (10) of a geotechnical anchor element (12), which is in particular realized of a corrosion-sensitive metal or of a corrosion-sensitive metal alloy, for example of a construction steel or a concrete steel, with at least one sleeve element (14) which is configured at least for a mounting on the geotechnical anchor element (12), encompassing the end region (10) of the geotechnical anchor element (12) at least in a circumferential direction of the geotechnical anchor element (12), characterized in that the sleeve element (14) is made at least largely of a corrosion-resistant metal and comprises at least an outer thread (16).
2. The corrosion protection device (44) according to claim 1, characterized in that the sleeve element (14) is realized as a cap that is at least partially, preferably completely, closed in a longitudinal direction (18) of the sleeve element (14).
3. The corrosion protection device (44) according to claim 1 or 2, characterized in that the sleeve element (14) comprises an inner thread (20).
4. The corrosion protection device (44) according to claim 3, characterized in that a thread crest (22) of the inner thread (20) at the same time forms a thread groove (24) of the outer thread (16).
5. The corrosion protection device (44) at least according to one of the preceding claims, characterized in that the inner thread (20) and / or the outer thread (16) are / is realized as a thread / as threads having a coarse thread pitch (28) of more than 5 mm.
6. The corrosion protection device (44) according to one of the preceding claims, characterized in that the sleeve element (14) is designed for a force transfer between a nut (30) that is screwed onto the outer thread (16) of the sleeve element (14) and the geotechnical anchor element (12).
7. The corrosion protection device (44) according to one of the preceding claims, characterized in that the sleeve element (14) is made at least largely of a stainless steel.
8. The corrosion protection device (44) according to one of the preceding claims, characterized in that the sleeve element (14) is realized in a one-part implementation.
9. The corrosion protection device (44) according to one of the preceding claims, characterized in that the sleeve element (14) is a prefabricated component realized separately from the geotechnical anchor element (12).
10. The corrosion protection device (44) according to one of the preceding claims, characterized in that an inner space (32) of the sleeve element (14) is at least partially filled with a deformable sealing mass (34).
11. The corrosion protection device (44) according to one of the preceding claims, characterized in that an inner space (32) of the sleeve element (14) is at least partially filled with a deformable adhesive mass (36).
12. The corrosion protection device (44) according to one of the preceding claims, characterized in that the sleeve element (14) is mountable, in particular screwable, onto a geotechnical anchor element (12) without a tool.
13. The corrosion protection device (44) according to one of the preceding claims, characterized in that the sleeve element (14) has a wall thickness (38) that is equivalent to at least 1.2 %, preferably to at least 2.5 %, of a maximal outer diameter (40) of the sleeve element (14).
14. A corrosion protection system (42) with the corrosion protection device (44) according to one of claims 1 to 13 and with a geotechnical anchor element (12).
15. The corrosion protection system (42) according to claim 14, characterized in that the corrosion protection device (44) is mounted on the geotechnical anchor element (12) in such a way that interstices (62) between the sleeve element (14) and the geotechnical anchor element (12) are closed toward an environment (66) in a water-tight manner and / or filled with a deformable sealing mass (34) and / or with a deformable adhesive mass (36).
16. The corrosion protection system (42) according to claim 14 or 15, characterized in that the sleeve element (14) is mounted on the geotechnical anchor element (12) in such a way that, in a state of the geotechnical anchor element (12) being anchored in a ground (46), a subregion (48) of the sleeve element (14) is sunk in the ground (46).
17. The corrosion protection system (42) according to claim 16, characterized in that in the anchored state of the geotechnical anchor element (12), at least a third of a total longitudinal extent (78) of the sleeve element (14) is arranged so as to be sunk in the ground (46).
18. A corrosion-protected embankment stabilization system (50) with a corrosion protection system (42) according to one of claims 14 to 17 which is anchored in a ground (46), with a wire netting (52) made of high-tensile steel, with a clamping plate (54) and with a nut (30), wherein the clamping plate (54) is threaded into the geotechnical anchor element (12) that is anchored in the ground (46) and furnished with the sleeve element (14), and wherein - by means of the nut (30) that is screwed onto the sleeve element (14) - the clamping plate (54) is pressed onto the wire netting (52) in a longitudinal direction (18) of the geotechnical anchor element (12) such that the wire netting (52) is fastened on the ground (46) in an at least substantially positionally fixed manner.
19. The corrosion-protected embankment stabilization system (50) according to claim 18, characterized in that the clamping plate (54), the nut (30) and / or the wire netting (52) have / has at least a stainless steel surface or are / is completely made of a stainless steel, the geotechnical anchor element (12) being made of a corrosion-sensitive metal or of a corrosion-sensitive metal alloy.
20. A method for a corrosion-protected anchoring of a geotechnical anchor element (12) which is made of a corrosion-sensitive metal or of a corrosion-sensitive metal alloy, in particular of a construction steel, wherein in at least one method step (56) a sleeve element (14), which is at least largely made of a corrosion-resistant metal and comprises an outer thread (16), is mounted in an end region (10) of the geotechnical anchor element (12), wherein in at least one further method step (64) the sleeve element (14) gets closed toward an environment (66) in a humidity-tight manner, and wherein in at least one further method step (68) the geotechnical anchor element (12) is brought into a ground (46) in such a way that at least a subregion (48) of the sleeve element (14) that is mounted on the geotechnical anchor element (12) is sunk into the ground (46), in particular mortared into the ground (46).