EP0703326B1 - Korrosionsgeschütztes Zugglied, vornehmlich Spannglied für Spannbeton ohne Verbund - Google Patents
Korrosionsgeschütztes Zugglied, vornehmlich Spannglied für Spannbeton ohne Verbund Download PDFInfo
- Publication number
- EP0703326B1 EP0703326B1 EP95114352A EP95114352A EP0703326B1 EP 0703326 B1 EP0703326 B1 EP 0703326B1 EP 95114352 A EP95114352 A EP 95114352A EP 95114352 A EP95114352 A EP 95114352A EP 0703326 B1 EP0703326 B1 EP 0703326B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tension member
- anchoring
- plate
- tension
- strands
- 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
- 239000011513 prestressed concrete Substances 0.000 title claims description 4
- 238000005260 corrosion Methods 0.000 title description 9
- 230000007797 corrosion Effects 0.000 title description 7
- 238000004873 anchoring Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 210000002435 tendon Anatomy 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000011083 cement mortar Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000011796 hollow space material Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 4
- 238000005253 cladding Methods 0.000 description 4
- 239000004567 concrete Substances 0.000 description 4
- -1 Polyethylene Polymers 0.000 description 3
- 230000036316 preload Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
Definitions
- the invention relates to a corrosion-protected tension member, primarily a tendon for prestressed concrete without bond according to the preamble of claim 1.
- Preload with and without bond In the construction of prestressed concrete structures, but especially in the case of bridge structures, they are known Preload with and without bond. Preload with composite is usually used as a preload with a subsequent bond executed.
- the tendons are arranged in Cladding tubes within the concrete cross section until hardening of the concrete held longitudinally and after tensioning by injecting cement paste into the remaining Annuli are brought into connection with the building. At The tendons are usually pre-stressed without bond outside the concrete cross section, but are opposite to that Supported structure; so you can visit at any time, tightened and if necessary also replaced.
- tension members of this type are as tension elements so-called monostrands are used, i.e. Steel wire strands that each in an envelope made of plastic, e.g. Polyethylene, arranged and one of the annular space between the tension element and envelope filling, plastically deformable Corrosion protection compound, e.g. Fat, are surrounded (DE-A-37 34 954).
- the anchor pot itself is inserted into an anchor tube that is in the anchoring area forms the tubular envelope of the tension member.
- the strands can be retightened and exchanged and it is still possible to pass the anchor pot Cavity between the cladding of the strands and the Inner wall of the tubular casing in the free area of the Tension member with hardening material, in particular Cement mortar to grout.
- the arrangement of a stuffing box makes one Sealing both against the wrappings of the individual Strands, as well as opposite the tubular casing of the entire tension member reached; the construction is relatively complex and fragile and therefore not for everyone Suitable for use.
- the object of the invention underlying, an easier and more economical way for sealing the anchoring area of a such tension member to its free area create in which the cavity may be entirely or partly also with a hardening material, e.g. Cement paste, can be filled.
- a hardening material e.g. Cement paste
- the main advantage of the invention is that the arrangement of the sealing plate immediately below the Anchor plate on the previously necessary, with Corrosion protection compound filled cavity completely can be dispensed with.
- the wrappings of each Tension elements are applied through the sealing washer the armature disk brought in or in this, so that the one surrounding the individual elements within their envelopes Corrosion protection compound directly to the holes in material filling the armature disk. Because that Individual elements after removing the wrappings in the Anchoring area still adhering material when Sliding on the anchoring wedges is stripped and the Bores including the blind hole-like extensions Filled out, can usually be filled in by an additional Corrosion protection compound are dispensed in the holes.
- an anchoring area is a Bundle tendon 1 from a number of individual Tension elements 2 shown.
- the tension elements 2 consist of So-called monostrands, these are steel wire strands 3, which are used for Corrosion protection with plastic coverings, e.g. Envelope tubes 4, are provided and in which the cavity between the strands 3 and the casing tubes 4 with a plastically deformable anti-corrosion compound, e.g. Fat, is filled out.
- the strands 3 are made of several parts Ring wedges 5 in conical bores 6 in an armature disk 7 anchored from steel.
- the armature disk 7 is supported against an anchoring body 8 made of steel, which in a Concrete component 9 is embedded and in this Anchoring area the tubular sheathing of the tension member 1 forms.
- the tubular casing then sits to the anchoring body 8 in a trumpet 10 Plastic, e.g. PE, to which then a cladding tube 11, again made of plastic, e.g. PE, sealed is.
- the strands 3 are within the anchoring body 8 their envelopes 4 through holes in a perforated disk 12 passed through, which in turn made of plastic, mainly PE, exists.
- the perforated disc 12 is below Interposition of one with appropriate holes provided washer 13 from an elastic deformable material, e.g. Neoprene on which the Air side facing away from the armature plate 7.
- Bolts 14 pass through the armature disk 7 Sealing disc 13 and the perforated disc 12 and allow that Applying a surface pressure to the sealing washer 13 with the result of a seal against the Envelopes 4 of the strands 2 causing transverse expansion.
- FIGS. 3a to f shows individual successive work phases.
- the tubular casing of the Bundle tendon 1 consisting of the cladding tube 11, the Trumpet 10 and the anchoring body 8, laid in which the individual tension elements 2 are inserted.
- the anchor can be mounted inside the remaining tubular duct with a hardening material, e.g. Cement mortar to be filled in to arrange and fix the individual elements 2. After this When this material hardens, the prestress is applied.
- a hardening material e.g. Cement mortar
- the strands 3 with the coverings 4 in the Anchoring body 8 introduced; they are at your disposal Tension or anchor required length L over the Anchoring out.
- the strands 3 with their coverings 4 are already the perforated disc 12 and the sealing disc 13 postponed.
- the strands 3 in the area the protruding length L stripped to a length l, i.e. freed from the wrappers 4 to the strands 3 individually to be able to anchor (Fig. 3b).
Description
- Fig. 1
- einen Längsschnitt durch den Verankerungsbereich eines erfindungsgemäßen Zugglieds,
- Fig. 1a
- ein Detail aus Fig. 1 in größerem Maßstab,
- Fig. 2
- einen Querschnitt entlang der Linie II-II in Fig. 1 und die
- Fig. 3a bis f
- einzelne Arbeitsphasen beim Zusammenbau der Verankerung eines erfindungsgemäßen Zugglieds.
Claims (4)
- Korrosionsgeschütztes Zugglied, vornehmlich Spannglied für Spannbeton ohne Verbund, aus einer Mehrzahl von innerhalb einer rohrförmigen Umhüllung angeordneten Zugelementen, wie Stahlstäben, -drähten oder -litzen, die ihrerseits in je einer Umhüllung aus Kunststoff angeordnet und von plastisch verformbarer Korrosionsschutzmasse umgeben sind, wobei das Zugglied an seinen Enden Ankervorrichtungen mit jeweils einer mit Bohrungen für den Durchtritt der Zugelemente versehenen Ankerscheibe aufweist, dadurch gekennzeichnet, daß die Zugelemente (2) mit ihren Umhüllungen (4) durch Bohrungen in mindestens einer Lochscheibe (12) und mindestens einer mit entsprechenden Bohrungen versehenen Dichtungsscheibe (13) hindurchgeführt sind, wobei die Lochscheibe (12) unter Zwischenschaltung der Dichtungsscheibe (13) gegen die der Luftseite abgewandte Seite der Ankerscheibe (7) anpreßbar ist.
- Zugglied nach Anspruch 1, dadurch gekennzeichnet, daß die Bohrungen (6) in der Ankerscheibe (7) an der der Luftseite abgewandten Seite zur Einführung der Enden der Umhüllungen (4) der Zugelemente (2) sacklochartig erweitert (6a) sind.
- Zugglied nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Dichtungsscheibe (13) mittels die Lochscheibe (12) und die Ankerscheibe (7) durchsetzender Schraubenbolzen (14) zusammenpreßbar ist.
- Zugglied nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Hohlraum zwischen den Zugelementen (2) und der rohrförmigen Umhüllung zumindest in den an die Ankervorrichtungen anschließenden Bereichen mit einem erhärtenden Material, z.B. Zementmörtel, ausgefüllt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4433832 | 1994-09-22 | ||
DE4433832A DE4433832A1 (de) | 1994-09-22 | 1994-09-22 | Korrosionsgeschütztes Zugglied, vornehmlich Spannglied für Spannbeton ohne Verbund |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0703326A1 EP0703326A1 (de) | 1996-03-27 |
EP0703326B1 true EP0703326B1 (de) | 1999-11-03 |
Family
ID=6528892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95114352A Expired - Lifetime EP0703326B1 (de) | 1994-09-22 | 1995-09-13 | Korrosionsgeschütztes Zugglied, vornehmlich Spannglied für Spannbeton ohne Verbund |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0703326B1 (de) |
DE (2) | DE4433832A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003083216A1 (de) | 2002-04-03 | 2003-10-09 | Dywidag-Systems International Gmbh | Verankerungsvorrichtung für ein korrosionsgeschütztes zugglied, insbesondere schrägseil für eine schrägseilbrücke |
EP2697447B1 (de) | 2011-04-15 | 2016-02-24 | Soletanche Freyssinet | Verfahren zum schutz des endes eines mehrsehnigen kabels |
EP2550400B1 (de) | 2010-03-26 | 2020-06-24 | VSL International AG | Dichtungsanordnung |
US10889988B2 (en) | 2013-08-01 | 2021-01-12 | Dywidag-Systems International Gmbh | Corrosion-protected tension member and plastically deformable disc of corrosion protection material for such a tension member |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1058726A (ja) * | 1996-06-13 | 1998-03-03 | Ricoh Co Ltd | 画像記録装置 |
DE19801786A1 (de) * | 1998-01-19 | 1999-07-29 | Suspa Spannbeton Gmbh | Verankerungsvorrichtung für einen Spann- und/oder Festanker |
DE19833273A1 (de) * | 1998-07-24 | 2000-01-27 | Josef Eibl | Spanngliedanordnung |
FR2783266B1 (fr) * | 1998-09-16 | 2000-12-15 | Spie Precontrainte | Organe d'ancrage remplacable, dispositif de protection mixte , systeme de precontrainte exterieure remplacable et ouvrage |
DE19918438A1 (de) * | 1999-04-23 | 2000-11-09 | Dyckerhoff & Widmann Ag | Korrosionsgeschütztes Stahlzugglied |
DE20311950U1 (de) | 2003-08-02 | 2004-12-09 | Dywidag-Systems International Gmbh | Korrosionsgeschütztes Zugglied, insbesondere Spannglied für Spannbeton |
KR101104212B1 (ko) * | 2008-06-04 | 2012-01-10 | 아주대학교산학협력단 | 프리스트레스 강선 정착 장치 |
CN103147538B (zh) * | 2013-03-01 | 2015-12-30 | 柳州欧维姆机械股份有限公司 | 一种锚头密封结构组件 |
CN104563395A (zh) * | 2015-01-06 | 2015-04-29 | 大连理工大学 | 一种体外预应力锚具防腐结构 |
CN111041970B (zh) * | 2019-12-17 | 2021-03-16 | 北京市第三建筑工程有限公司 | 预应力单耳拉索及其张拉方法 |
CN113137007A (zh) * | 2021-04-27 | 2021-07-20 | 郑亮 | 一种碳纤维板锚具 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8327978D0 (en) * | 1983-10-19 | 1983-11-23 | Manuf Aceros Caucho Sa | Cable anchorage |
DE3644551C2 (de) * | 1986-12-24 | 1994-12-08 | Zueblin Ag | Verankerung für ein verbundloses Spannglied |
DE3734954A1 (de) * | 1987-03-13 | 1988-04-07 | Dyckerhoff & Widmann Ag | Korrosionsgeschuetztes zugglied, vornehmlich spannglied fuer spannbeton ohne verbund und verfahren zu seinem einbau |
DE3801451C2 (de) * | 1987-10-15 | 1994-09-29 | Dyckerhoff & Widmann Ag | Korrosionsgeschütztes freies Zugglied, vornehmlich Spannglied für Spannbeton ohne Verbund |
FR2623551B1 (fr) * | 1987-11-25 | 1992-04-24 | Freyssinet Int Stup | Perfectionnements aux haubans et a leurs composants |
FR2628777B1 (fr) * | 1988-03-18 | 1990-08-17 | Vsl France | Dispositif d'ancrage de cables precontraints pour ouvrages du type maconnerie |
DE3831518C2 (de) * | 1988-09-16 | 1994-12-22 | Holzmann Philipp Ag | Spannglied in polygonartiger Anordnung sowie Verfahren zum Einziehen des Spannglieds |
DE9012786U1 (de) * | 1990-09-07 | 1990-11-08 | Dyckerhoff & Widmann Ag, 8000 Muenchen, De | |
DE4118897A1 (de) * | 1991-06-08 | 1992-12-10 | Hochtief Ag Hoch Tiefbauten | Bauwerkslagereinrichtung fuer ein spannglied und verfahren zum auswechseln eines solchen spanngliedes |
-
1994
- 1994-09-22 DE DE4433832A patent/DE4433832A1/de not_active Withdrawn
-
1995
- 1995-09-13 DE DE59507171T patent/DE59507171D1/de not_active Expired - Lifetime
- 1995-09-13 EP EP95114352A patent/EP0703326B1/de not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003083216A1 (de) | 2002-04-03 | 2003-10-09 | Dywidag-Systems International Gmbh | Verankerungsvorrichtung für ein korrosionsgeschütztes zugglied, insbesondere schrägseil für eine schrägseilbrücke |
EP2550400B1 (de) | 2010-03-26 | 2020-06-24 | VSL International AG | Dichtungsanordnung |
EP2697447B1 (de) | 2011-04-15 | 2016-02-24 | Soletanche Freyssinet | Verfahren zum schutz des endes eines mehrsehnigen kabels |
US10889988B2 (en) | 2013-08-01 | 2021-01-12 | Dywidag-Systems International Gmbh | Corrosion-protected tension member and plastically deformable disc of corrosion protection material for such a tension member |
Also Published As
Publication number | Publication date |
---|---|
DE59507171D1 (de) | 1999-12-09 |
DE4433832A1 (de) | 1996-03-28 |
EP0703326A1 (de) | 1996-03-27 |
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