EP1380705B1 - Verwendung einer Verankerungsvorrichtung für Zugglieder - Google Patents
Verwendung einer Verankerungsvorrichtung für Zugglieder Download PDFInfo
- Publication number
- EP1380705B1 EP1380705B1 EP03023075A EP03023075A EP1380705B1 EP 1380705 B1 EP1380705 B1 EP 1380705B1 EP 03023075 A EP03023075 A EP 03023075A EP 03023075 A EP03023075 A EP 03023075A EP 1380705 B1 EP1380705 B1 EP 1380705B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tension member
- tension
- anchorage device
- anchor wedges
- anchoring device
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/127—The tensile members being made of fiber reinforced plastics
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
- E04G2023/0262—Devices specifically adapted for anchoring the fiber reinforced plastic elements, e.g. to avoid peeling off
Definitions
- the invention relates to the use of an anchoring device for tension members, especially for tension members made of fiber-reinforced plastic, for external Pretensioning a component with the aid of a tension member, the anchoring device an anchoring body through which the tension member is guided, and at least comprises two anchor wedges which are arranged around the tension member and with whose help the tension member is fixed in the anchor body, at least a protective element is provided between the anchor wedges and the tension member is arranged so that the force input to the tension member indirectly via the Protective element takes place.
- the tension member is guided through a sleeve or at the end provided with a sleeve.
- the sleeve is then covered with a binder such as Example with resin, potted so that the tension member is fixed in the sleeve.
- This Potting requires precise work and is very complex overall, so that Use of such potting anchors as a rule on construction sites is not economical.
- clamping anchoring In the case of clamping anchoring, the tension member is guided through an anchoring body and fixed there using at least two anchor wedges, which are usually be arranged symmetrically around the tension member. The tension member is transverse to Longitudinal pressed. The resulting friction enables the pretension required force transmission into the tension member.
- Clamp anchorages have that The advantage that they can be installed relatively easily at any point on a tension member are.
- clamping anchors are only suitable to a limited extent for certain tension members. Particularly in the case of tension members that are highly sensitive to transverse pressure, i.e. tension members, which have an anisotropic material behavior, can in the range of Clamping anchorage occurring shear stress peaks to break, i.e. to tear off of the tension member. The possibilities of force application or load transfer are very limited here. Especially under dynamic load the efficiency of clamping anchors in such tension members is therefore relative bad.
- tension members are here fiber-reinforced plastics - in particular from carbon fiber-reinforced plastics (CFK) - called.
- CFRK carbon fiber-reinforced plastics
- Such tension members are used, for example, as reinforcement elements used in concrete construction. The prestressing of the tension members or reinforcement elements leads here to an improved load-bearing behavior of the concrete component under working load.
- FR-A-2 708 017 is a use of an anchoring device for Tension members with the features of the preamble of claim 1 are known.
- the Known anchoring device has an anchoring body through which the Tension member is guided, and two anchor wedges arranged around the tension member and with the help of which the tension member is fixed in the anchoring body.
- a protective element is provided between the anchor wedges and the tension member. The surfaces of the anchor wedges which are in contact with the protective element have in evenly spaced recesses.
- the anchoring device has an anchoring body, through which the tension member is guided, and two anchor wedges, which around the tension member can be arranged. Furthermore, between the anchor wedges and the tension member provided a protective element.
- DE-A-25 15 423 also discloses the use of an anchoring device known for tension members.
- the anchoring device has an anchoring body, through which the tension member is guided, and two anchor wedges around the tension member to be ordered. There is a between the anchor wedges and the tension member Protective element provided.
- DE 12 78 718 B describes the use of an anchoring device for tension members with an anchoring body through which the tension member is guided is known, and with two anchor wedges, which are arranged around the tension member. A protective element is arranged between the anchor wedges and the tension member.
- the object of the invention is to use an anchoring device of the type in question, in which a subsequent Reinforcement of concrete components is possible.
- an anchoring device solves the above Task by the features of claim 1. Then at least If a slit is created in the surface of the component, the slit becomes at least a location for the anchoring device expanded and at least in some areas filled with a binder and the tension member is at least in sections placed in the slot and using the anchoring device tense until the binder has hardened.
- the slot is on at least one Expanded site for the anchoring device.
- the slot will then at least partially filled with a binder, in which the tension member at least in sections is embedded.
- the tension member can now be tightened until the binder has hardened.
- the anchoring device can be removed again, since the Tension member is held in the slot by the binder.
- the anchoring device is also suitable for prestressing tension members are very sensitive to lateral pressure.
- Particularly important representatives of this class of Tension members are tension members made of fiber-reinforced and in particular carbon-fiber reinforced Plastics. Such tension members are very successful subsequent reinforcement of concrete components used.
- Using an anchoring device is external pretensioning of Concrete components made possible by prestressing the tension members.
- the contact surface is reduced.
- HOT STUFF become the frictional forces caused by the transverse pressure uniform.
- the tension member should be as free as possible on the load side Shear stresses, because shear stress peaks here to break the tension member being able to lead. For this, the tension member can be tackled more strongly at the unloaded end become.
- the density of the recesses could be in the direction of the load End of the tension member become larger.
- the protective element essentially depends on the type of tension member used.
- the protective element could advantageously be in shape be formed a sleeve through which the strand-shaped tension member is guided.
- This sleeve could advantageously enclose the tension member as positively as possible.
- the sleeve could be made of a deformable material, such as. B. sheet metal, be made and have a slot.
- Such a sleeve could be used for assembly and adaptation to stranded tension members with different diameters simply bent apart or pressed together.
- Tension members made of fiber-reinforced plastics are often in the form of strips or Slats in front.
- An anchoring device designed for such band-shaped tension members comprises at least two plate-shaped protective elements on the two main surfaces of the band-shaped tension member arranged opposite each other become.
- the area dimensioning of the plate-shaped protective elements should be matched to the width of the band-shaped tension member.
- the shape of the recesses in the surface of the protective element plays only one subordinate role. Point recesses are just as suitable as flat recesses. For manufacturing reasons have essentially grooves oriented perpendicular to the tension member in the surface of the anchor wedges and / or in the surface of the protective element has proven to be advantageous.
- the effect sought with the use of a protective element is then special well if the protective element is made of a material with a low modulus of elasticity, such as aluminum or copper.
- an anchoring device 1 for a tension member 2 is shown, the one Anchoring body 3 comprises, through which the tension member 2 is guided.
- the anchoring device 1 further comprises two anchor wedges 4, with the aid of which the tension member 2 is fixed in the anchoring body 3.
- the tension member 2 is a CFRP slat, i.e. around a band-shaped Tension member 2 made of a carbon fiber reinforced plastic. Accordingly the anchoring device 1 also comprises only two anchor wedges 4 which are symmetrical around the tension member 2, namely against the two main surfaces of the tension member 2 are arranged.
- the anchoring device 1 additionally comprises two protective elements 5, each are arranged between the anchor wedges 4 and the tension member 2, so that the Force is applied to the tension member 2 indirectly via the protective elements 5.
- the two protective elements 5 are protective plates that are directly on the two main surfaces of the tension member 2, arranged opposite each other are.
- the surfaces of the anchor wedges 4 that are in contact with the protective elements 5 are provided with recesses 6, which is shown particularly clearly in FIG. 2 is. These are groove-shaped recesses 6, which are essentially are oriented perpendicular to the tension member 2.
- the grooves are even, i. H. in evenly spaced on the surface of the anchor wedges 4.
- the grooves 6 serve here only to reduce the contact surface of the anchor wedges 4. Not by one uniform distribution of recesses in the surface of the anchor wedges can also a non-uniform distribution of the contact pressure can be achieved, which in particular is advantageous if one of the ends, usually the loaded end of the Tension member should be as free as possible from shear stress.
- the protective plates 5 are made of one material Made with a low modulus of elasticity, namely made of aluminum, for example or copper.
- sliding layer 7 on the surface of the anchor wedges facing away from the tension member 2 4 provided.
- These sliding layers 7 are realized in the form of Teflon foils.
- the sliding layers 7 facilitate the assembly of the anchoring device 1 in that as they represent defined sliding surfaces that cause the arrangement of the anchor wedges to slip 4 and protective plates 5 around the tension member 2 when inserted into the anchoring body 3 prevent.
- anchoring device is particularly suitable for anchoring and Prestressing tendons made of fiber-reinforced plastics and in particular suitable for tapes made of carbon fiber reinforced plastics in connection with other, for example strand-like tension members from others Materials are used.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Piles And Underground Anchors (AREA)
- Joining Of Building Structures In Genera (AREA)
- Rod-Shaped Construction Members (AREA)
- Heat Treatment Of Articles (AREA)
Description
- Fig. 1
- einen Schnitt durch eine Verankerungsvorrichtung vor dem Zusammenbau und
- Fig. 2
- einen der in Figur 1 dargestellten Ankerkeile in Schnittdarstellung und eine Aufsicht auf die dem Zugglied zugewandte Oberfläche.
Claims (4)
- Verwendung einer Verankerungsvorrichtung (1 ) für Zugglieder (2), insbesondere für Zugglieder (2) aus faserverstärktem Kunststoff, beim externen Vorspannen eines Bauteils mit Hilfe eines Zuggliedes (2), wobei die Verankerungsvorrichtung (1 ) einen Verankerungskörper (3), durch den das Zugglied (2) geführt wird, und mindestens zwei Ankerkeile (4) umfasst, die um das Zugglied (2) angeordnet werden und mit deren Hilfe das Zugglied (2) im Verankerungskörper (3) festgelegt wird, wobei mindestens ein Schutzelement (5) vorgesehen ist, das zwischen den Ankerkeilen (4) und dem Zugglied (2) angeordnet wird, so dass die Krafteintragung auf das Zugglied (2) indirekt über das Schutzelement (5) erfolgt,
dadurch gekennzeichnet, dass mindestens ein Schlitz in der Oberfläche des Bauteils erzeugt wird, der Schlitz an mindestens einer Stelle für die Verankerungsvorrichtung (1 ) aufgeweitet wird und zumindest bereichsweise mit einem Bindemittel verfüllt wird und das Zugglied (2) zumindest abschnittsweise in dem Schlitz angeordnet wird und mit Hilfe der Verankerungsvorrichtung (1) angespannt wird, bis das Bindemittel erhärtet ist. - Verwendung einer Verankerungsvorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Schutzelement (5) in Form einer vorzugsweise geschlitzten Hülse ausgebildet ist oder dass mindestens zwei plattenförmige Schutzelemente (5) vorgesehen sind.
- Verwendung einer Verankerungsvorrichtung (1 ) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die mit dem Schutzelement (5) in Kontakt stehenden Oberflächen der Ankerkeile (4) und/oder die mit den Ankerkeilen (4) in Kontakt stehende Oberfläche des Schutzelements (5) mit Ausnehmungen versehen ist, wobei vorzugsweise die Dichte der Ausnehmungen (6) in Richtung des belasteten Endes des Zugglieds (2) größer wird.
- Verwendung einer Verankerungsvorrichtung (1 ) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass auf der dem Zugglied (2) abgewandten Oberfläche der Ankerkeile (4) eine, vorzugsweise in Form einer Teflonfolie realisierte, Gleitschicht (7) vorgesehen ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19815823A DE19815823C2 (de) | 1998-04-08 | 1998-04-08 | Verankerungsvorrichtung für Zugglieder |
DE19815823 | 1998-04-08 | ||
EP99106872A EP0949389B1 (de) | 1998-04-08 | 1999-04-07 | Verankerungsvorrichtung für Zugglieder |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99106872.7 Division | 1999-04-07 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1380705A2 EP1380705A2 (de) | 2004-01-14 |
EP1380705A3 EP1380705A3 (de) | 2004-01-28 |
EP1380705B1 true EP1380705B1 (de) | 2004-10-13 |
Family
ID=7864042
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03023075A Expired - Lifetime EP1380705B1 (de) | 1998-04-08 | 1999-04-07 | Verwendung einer Verankerungsvorrichtung für Zugglieder |
EP99106872A Expired - Lifetime EP0949389B1 (de) | 1998-04-08 | 1999-04-07 | Verankerungsvorrichtung für Zugglieder |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99106872A Expired - Lifetime EP0949389B1 (de) | 1998-04-08 | 1999-04-07 | Verankerungsvorrichtung für Zugglieder |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP1380705B1 (de) |
AT (2) | ATE269462T1 (de) |
DE (3) | DE19815823C2 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080279622A1 (en) * | 2003-10-03 | 2008-11-13 | University Of Waterloo | Tension Anchorage System |
AT412564B (de) | 2003-12-22 | 2005-04-25 | Burtscher Stefan L Dipl Ing Dr | Keilverankerung für vorgespannte und/oder belastete zugelemente |
US8327506B2 (en) | 2007-01-09 | 2012-12-11 | Wireco Worldgroup Inc. | Socketing material and speltered assembly for terminating tension member |
CA2769575C (en) * | 2009-08-12 | 2014-03-25 | Tokyo Rope Manufacturing Co., Ltd. | End anchoring structure and method for fiber-reinforced plastic filament body |
CN101929221A (zh) * | 2010-02-10 | 2010-12-29 | 山东省建筑科学研究院 | 纤维增强塑料片材用主动式锚夹具 |
EP2420622A1 (de) * | 2010-08-18 | 2012-02-22 | Sika Technology AG | Vorrichtung zur Krafteinleitung in Zugglieder aus faserverstärkten Kunststoff-Flachbandlamellen |
CN101967867A (zh) * | 2010-10-27 | 2011-02-09 | 西南交通大学 | 通用型碳纤维筋夹片式锚具 |
EP2447446A1 (de) * | 2010-10-28 | 2012-05-02 | Sika Technology AG | Endverankerung von Zuggliedern an Stahlbetonträgern |
EP2631392A1 (de) * | 2012-02-21 | 2013-08-28 | Sika Technology AG | Vorrichtung zur Krafteinleitung in Zugglieder aus faserverstärkten Kunststoff-Flachbandlamellen |
NZ709195A (en) | 2012-12-18 | 2016-07-29 | Wobben Properties Gmbh | Anchor, tensioning device, wind turbine and method for putting tensile element strands under tensile stress on an anchor |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2009318A (en) * | 1929-10-29 | 1935-07-23 | Highfield John Somerville | Method of joining together or anchoring wire cables and apparatus therefor |
US2357733A (en) * | 1942-02-03 | 1944-09-05 | Columbus Mckinnon Chain Corp | Anchor for flexible cables and a method of securing the same thereto |
US2441304A (en) * | 1947-10-13 | 1948-05-11 | Maxwell A West | Cable clamp |
DE1278718B (de) * | 1962-06-30 | 1968-09-26 | Rudolf Buehrer | Vorrichtung zum Greifen und Verankern eines walzprofilierten Spannstabs, insbesondere eines Stabs mit Schraegrippen |
DE6601081U (de) * | 1966-03-23 | 1969-04-03 | Rehm G | Vorrichtung zur verankerung von stahlstaeben bzw. stahldraehten u. dgl. mit profilierter oberflaeche |
GB1434716A (en) * | 1972-08-02 | 1976-05-05 | Ccl Systems Ltd | Wedge type anchorage devices |
AT328156B (de) * | 1974-04-26 | 1976-03-10 | Felten & Guilleaume Ag Oester | Verankerungsvorrichtung fur verbundstrange aus einem kunststoffkorper und in diesen eingebetteten insbesondere parallelen drahten |
AT373015B (de) * | 1980-05-24 | 1983-12-12 | Strabag Bau Ag | Verankerung fuer ein spanndrahtbuendel |
JPS58102845A (ja) * | 1981-12-14 | 1983-06-18 | Mitsubishi Heavy Ind Ltd | ワイヤ−ロ−プのグリツプ装置 |
DD214419A1 (de) * | 1983-03-10 | 1984-10-10 | Verkehrswesen Hochschule | Kerbwirkungsarme zentrische seilendbefestigung |
FR2562927B1 (fr) * | 1984-04-12 | 1988-03-18 | Guinet Derriaz | Dalle de pierre a armature de precontrainte et procede pour sa fabrication |
DE3438355A1 (de) * | 1984-10-19 | 1986-04-24 | Philipp Holzmann Ag, 6000 Frankfurt | Keilverankerung fuer spanndrahtlitzen |
FR2708017B1 (fr) * | 1993-07-21 | 1995-09-22 | Freyssinet Int Stup | Perfectionnements aux mors tronconiques d'ancrage pour câbles et à leurs procédés de mise en Óoeuvre. |
DE19730174C2 (de) * | 1997-07-15 | 2001-12-06 | Bilfinger Berger Bau | Bauteil |
-
1998
- 1998-04-08 DE DE19815823A patent/DE19815823C2/de not_active Expired - Fee Related
-
1999
- 1999-04-07 EP EP03023075A patent/EP1380705B1/de not_active Expired - Lifetime
- 1999-04-07 AT AT99106872T patent/ATE269462T1/de not_active IP Right Cessation
- 1999-04-07 DE DE59909716T patent/DE59909716D1/de not_active Expired - Fee Related
- 1999-04-07 DE DE1999510866 patent/DE59910866D1/de not_active Expired - Fee Related
- 1999-04-07 EP EP99106872A patent/EP0949389B1/de not_active Expired - Lifetime
- 1999-04-07 AT AT03023075T patent/ATE279608T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0949389B1 (de) | 2004-06-16 |
DE59910866D1 (de) | 2004-11-18 |
ATE279608T1 (de) | 2004-10-15 |
DE19815823A1 (de) | 1999-10-21 |
EP1380705A2 (de) | 2004-01-14 |
ATE269462T1 (de) | 2004-07-15 |
DE59909716D1 (de) | 2004-07-22 |
EP0949389A1 (de) | 1999-10-13 |
EP1380705A3 (de) | 2004-01-28 |
DE19815823C2 (de) | 2000-11-30 |
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