EP1079040B1 - Membre tendu libre protégé contre la corrosion, notamment membre de précontrainte externe pour béton précontraint - Google Patents

Membre tendu libre protégé contre la corrosion, notamment membre de précontrainte externe pour béton précontraint Download PDF

Info

Publication number
EP1079040B1
EP1079040B1 EP00115516A EP00115516A EP1079040B1 EP 1079040 B1 EP1079040 B1 EP 1079040B1 EP 00115516 A EP00115516 A EP 00115516A EP 00115516 A EP00115516 A EP 00115516A EP 1079040 B1 EP1079040 B1 EP 1079040B1
Authority
EP
European Patent Office
Prior art keywords
tension member
anchoring
tension
outgoing
casing
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
Application number
EP00115516A
Other languages
German (de)
English (en)
Other versions
EP1079040A3 (fr
EP1079040A2 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DYWIDAG-Systems International GmbH
Original Assignee
Dywidag Systems International GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dywidag Systems International GmbH filed Critical Dywidag Systems International GmbH
Publication of EP1079040A2 publication Critical patent/EP1079040A2/fr
Publication of EP1079040A3 publication Critical patent/EP1079040A3/fr
Application granted granted Critical
Publication of EP1079040B1 publication Critical patent/EP1079040B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Definitions

  • the invention relates to a corrosion-protected free tension member, primarily a external tendon for prestressed concrete, from a bundle from within one Piping arranged tension elements, such as steel rods, wires or strands according to the preamble of claim 1.
  • Prestressing with bond is usually considered as prestressing with subsequent Composite
  • the tendons within the concrete cross-section lie and after tensioning by injecting cement paste in conjunction with brought to the building. With pre-tensioning without bond, they are Tendons outside the concrete cross section, however, are opposite to that Supported structure.
  • These tendons, also called external tendons can be checked, retightened and checked at any time if necessary, also be replaced. External tendons are often used also used for the renovation or subsequent reinforcement of bridges.
  • the piping of this tendon consists of two Pipe sections that are used to spread the outgoing tension elements
  • the armature disk has different diameters following each.
  • This Pipe sections are at their front ends with radially extending Provide flanges and by means of this both with the anchor device and with each other and with the piping in the normal area of the tendon screwed.
  • a hardening material between the tension elements and the piping e.g. Cement paste, injected.
  • the invention is based on the object Possibility to create one, possibly also in the injected state retensionable, tendon of the type specified in the range Coupling point to be able to record angle deviations without damage to the Piping must fear, especially without the reliability of the Endanger corrosion protection.
  • this object is achieved by a corrosion-protected free Tension member with the features of claim 1 and claim 7 solved.
  • the basic idea of the invention is in the area of the Anchoring of the incoming tendon, subsequent piping of the outgoing tendon, i.e. where there are changes in angle in the Tendon axis can occur in the piping itself articulated Provide liaison points while maintaining that for a later Inject with hardening material required tightness of the piping in allow changes in angle corresponding to the extent.
  • two solutions according to the invention For one, at the Junction of two sections of piping with different
  • the anchoring area designed as a coupling point is one Tendon 1 shown for prestressed concrete without bond in longitudinal section.
  • the Tendon 1 consists of a bundle of tension elements, e.g. Strands 2, off Steel wires, which are arranged together in a piping 3.
  • the tendon 1 is supported by an anchor device 4 as Intermediate anchoring compared to a building part 5, the one Construction phase, e.g. a bridge cross member, a pilaster strip or the like can limit; it continues beyond the anchor device 4 to one next, in an analogous manner designed anchor device or one End anchorage.
  • the one on the right in front of the anchor device 4 lying part of the entire tendon is called "incoming" part 1a, the one in which Representation on the left, part lying behind the anchor device 4 as a "leaving" part 1b designated.
  • the piping 3 of the tendon 1 extends in the area of the incoming part 1a into an anchor body 6 made of cast iron, to which an abutment body is flange-like 7 connects. Compared to this abutment body 7 is supported Coupling disc 8, in the central region of which there are bores in which the Strand 2a in a manner known per se, e.g. are anchored by ring wedges.
  • the coupling plate 8 are outside the anchorage of the incoming strands 2a in a circular manner in a corresponding manner outgoing strands anchored 2b. These are the actual ones Coupling point adjacent area by redirecting back to the distance returned, in which they also in the area of the outgoing tendon part 1b lie.
  • the piping is in the area of Coupling point from a cylindrical deflection tube 10, which at its the Anchor device 4 facing end by means of a flange 11 and Screw connection 12 on the anchor device 4, in the example shown one of the abutment body 7 surrounding ring plate 13 is attached, which in the Building part 5 is concreted.
  • the connection between the so rigid the anchor device 4 connected deflection pipe 10 and the piping 3 of the Outgoing tendon part 1b subjected to angle changes is shown in FIG shown on a larger scale.
  • the deflection tube 10 has the anchor device 4 on it facing away from the outer end an inwardly facing flange 14.
  • Die Piping 3 which in the normal range usually consists of a plastic pipe, e.g. one PE pipe, is over a design-related transition area 15, the also comprises a plastic tube, connected to a tube section 16 which, enclosing the bundle of strands extends into the deflection tube 10.
  • This Pipe section 16, which is also made of plastic, has an outside facing flange 17, which advantageously has the same thickness as the Flange 14 of the deflecting tube 10 and lies in the same radial plane as this.
  • the inner flange ring 19 is at the same time connected to a tubular deflection fitting 22 on which the strands 2b with the interposition of the pipe section 16 and the radial Absorbs expansion forces when tensioning the strands.
  • the pipe section 16 is used for Tensioning the strands 2b as an intermediate layer to make a metal contact between the Avoid strands and the deflection fitting 22.
  • the clear diameter of the end face Flange 14 of the deflection tube 10 and the diameter of the flange rings 18th and 19 and the radial distance between the screws 21 are chosen so that in this Area transverse displacements can be recorded.
  • This Training has the deflection fitting 22 abutting the strands 2b Possibility of automatically stretching the strands 2b into the corresponding one Position, possibly at a deflection angle ⁇ (Fig. 1) to the incoming Set up part 1a of the tendon before tightening the screw 21 becomes.
  • the interposed elastic intermediate layer 20 also does not provide parallel position of the flange rings 18 and 19 a perfect seal this Junction safe.
  • Fig. 2 shows the state after tensioning the tendon in the upper representation, the state after tensioning over a short tensioning path in the lower representation, in each case not yet injected state of the outgoing tendon part 1b and without taking into account a deflection angle ⁇ .
  • FIGS. 3 and 4 corresponds with regard to the connection between the fixed part of the piping and any changes in shape subject part, but allows a longer tension path.
  • the piping in the deflection area consists of two telescopic ends tubes that can be moved and sealed against each other, namely an - inner - deflection tube 10a and an - outer - support tube 24, which in turn has a flange 25 and a screw connection 26 with the Concreted ring plate 13 is screwed.
  • the tendon 1 is shown in Figures 3 and 4 in the injected state, i.e. both the cavity between the incoming strands 2a and the piping, as well as the cavities within the deflection tube 10a and within the Piping 3 of the outgoing tendon part 1b is with cement mortar 27 filled.
  • the telescopic guidance of the deflection tube 10 within the support tube 24 enables the tensioning element to be re-tensioned even with longer tensioning paths.
  • the cavity 28 created by re-tensioning between the anchoring area 4 and the coupling disk 8 is again pressed out with cement mortar.
  • FIGS. 5 and 6 Another option for taking a deflection angle ⁇ under Maintaining the retensionability of a tendon is shown in FIGS. 5 and 6 shown.
  • 5 corresponds with regard to the State of construction of that of Fig. 3, i.e. both the cavity between the incoming strands 2a and the piping, as well as the cavities within the piping of the outgoing tendon part 1b are with cement paste filled.
  • the deflection pipe 30 follows is designed as a casting, geometrically in its outer contour the course of the outgoing strands 2b in the deflection area between the coupling plate 8 and normal range of the tendon.
  • the deflection tube 30, which is in its outer Area via a flange 31 and a screw connection 32 with the piping 3 is connected, is in its inner region within the support tube 24 its outer circumference is approximately dome-shaped (33). This ensures that the inner end of the deflecting tube 30 should be when tightening Squeezes occur, can rotate in an articulated manner within the support tube 24.
  • a corresponding dome-like Training also provided on the inside of the deflection tube 33 and can Coupling plate 8 be spherical on its outer circumference 34.
  • FIG. 6 also shows the retensioning process for this embodiment, the tension member in the upper part of the illustration in the tensioned and injected state, in the lower part in one around the tensioning path ⁇ l 3 post-tensioned state is shown.
  • the deflection tube 30 can also be displaced within the support tube 24 in this embodiment.
  • it is arranged between the outer circumference of the deflection pipe, in particular in its area adjacent to the inner wall of the support pipe 24, and the latter sealing material.
  • the cavity created by the tensioning by the tensioning path ⁇ l 3 within the support tube 24 following the anchoring is again grouted with cement mortar 28 here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Bridges Or Land Bridges (AREA)

Claims (10)

  1. Membre de tension libre protégé contre la corrosion, notamment un membre de précontrainte externe pour béton précontraint, constitué d'un faisceau d'éléments de traction tels que tiges, fils ou torons d' acier, disposés à l'intérieur d'un tubage, comportant au moins en ses extrémités des dispositifs d'ancrage, l'élément de tension étant constitué d'au moins deux parties, chacune étant enfoncée dans un dispositif d'ancrage conformé en zone de couplage, où une plaque d'ancrage de préférence circulaire, appuyé contre un corps de butée, présente, en plus des perçages pour ancrer les éléments de tension de la partie entrante du membre de tension, aussi des perçages pour ancrer les éléments de tension de la partie sortante du membre de tension et pour lequel le tubage de la partie sortante du membre de tension est constitué dans la zone contiguë au dispositif d'ancrage d'au moins deux tronçons dissociables, reliés l'un à l'autre, qui, suivant l'écartement des éléments de tension de la partie sortante du membre de tension, présentent des diamètres différents, caractérisé en ce que, pour absorber les rotations angulaires et ou les déplacements transversaux entre les axes de la partie (1a) entrante du membre de tension et de la partie (1b) sortante du membre de tension, les tronçons (10 ainsi que 3, 15, 16) du tubage de la partie sortante du membre de tension sont reliés l'un à l'autre par une pression produite par serrage entre des brides (14, 17) opposées, en saillie radiale par rapport aux tronçons et entre des colliers (18, 19) enserrant celles-ci, en intégrant une pièce d'étanchéité élastiquement et/ou plastiquement déformable, sachant qu'il est prévu pour produire la pression de serrage une liaison vissée (21) avec des vis traversant les colliers (18, 19), dont les tiges de vis laissent suffisamment de jeu entre les brides (14, 17) afin de garantir les décalage perpendiculairement à l'axe longitudinal de l'élément de tension (1).
  2. Membre de tension selon la revendication 1, caractérisé en ce qu'il est prévu entre les colliers (18, 19), de préférence sur la face intérieure, une couche intermédiaire (20) élastique de forme annulaire en caoutchouc, en matière plastique ou similaire.
  3. Membre de tension selon la revendication 1 ou 2 caractérisé en ce que le tronçon de tubage le plus proche du dispositif d'ancrage ( 4) est conformé en tube de renvoi (10) et est relié de manière rigide mais détachable à la partie de l'ouvrage (5).
  4. Membre de tension selon la revendication 1 ou 2 caractérisé en ce que le tronçon de tubage le plus proche du dispositif d'ancrage (4) est conformé en tube de renvoi (10a) et est décalable de manière téléscopique dans un tube d'appui (24), lequel est pour sa part relié de manière rigide mais détachable à la partie de l'ouvrage (5).
  5. Membre de tension selon la revendication 4, caractérisé en ce que l'espace intermédiaire situé entre la surface extérieure du tube de renvoi (10a) et la paroi interne du tube d'appui (24) est rendu étanche.
  6. Membre de tension selon l'une des revendications 1 à 5 où l'espace creux entre les éléments individuels et le tubage est rempli avec un matériau durcissant (27, 28), par exemple du mortier de ciment, caractérisé en ce que la surface du dispositif d'ancrage (4) est revêtue d'un agent de séparation.
  7. Membre de tension libre protégé contre la corrosion, notamment un membre de précontrainte externe pour béton précontraint, constitué d' un faisceau d'éléments de traction tels que tiges, fils ou torons d' acier, disposés à l'intérieur d'un tubage, comportant au moins en ses extrémités des dispositifs d'ancrage, l'élément de tension étant constitué d'au moins deux parties, chacune étant enfoncée dans un dispositif d'ancrage conformé en zone de couplage, où une plaque d'ancrage de préférence circulaire, appuyée contre un corps de butée, présente, outre des perçages pour ancrer les éléments de tension de la partie entrante du membre de tension, aussi des perçages pour ancrer les éléments de tension de la partie sortante du membre de tension et pour lequel le tubage de la partie sortante du membre de tension est constitué, dans la zone contiguë au dispositif d'ancrage, d' au moins deux tronçons dissociables, reliés l'un à l'autre, qui, en suivant l'écartement des éléments de tension de la partie sortante du membre de tension, présentent des diamètres différents, caractérisé en ce que, pour absorber les rotations angulaires et ou les déplacements transversaux entre les axes de la partie (1a) entrante du membre de tension et de la partie (1b) sortante du membre de tension, le tronçon de tubage le plus proche du dispositif d'ancrage ( 4) est conformé en tube de renvoi (30) et est décalable dans un tube d'appui (24) relié de manière rigide avec la partie (5) de l'ouvrage et en ce que l'extrémité orientée vers le dispositif d'ancrage (4) du tronçon (30) présente une courbure (33) en forme de calotte, laquelle est en appui contre la paroi intérieure cylindrique du tube d' appui (24).
  8. Membre de tension selon la revendication 7, caractérisé en ce que la plaque de couplage (8) est conformée en cercle et, sur sa périphérie externe, de manière bombée afin d'agir conjointement avec la courbure (33) en forme de calotte du tube de renvoi (30).
  9. Membre de tension selon la revendication 7 ou 8, caractérisé en ce que l'espace intermédiaire entre la surface extérieure du tube de renvoi (30) et la paroi interne du tube d'appui (24) est rempli de manière étanche par un matériau de protection contre la corrosion.
  10. Membre de tension selon l'une des revendications 7 à 9 caractérisé en ce que le tube de renvoi (30) est constitué d'une pièce monobloc, par exemple en fonte.
EP00115516A 1999-08-21 2000-07-19 Membre tendu libre protégé contre la corrosion, notamment membre de précontrainte externe pour béton précontraint Expired - Lifetime EP1079040B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29914673U DE29914673U1 (de) 1999-08-21 1999-08-21 Korrosionsgeschütztes freies Zugglied, vornehmlich externes Spannglied für Spannbeton
DE29914673U 1999-08-21

Publications (3)

Publication Number Publication Date
EP1079040A2 EP1079040A2 (fr) 2001-02-28
EP1079040A3 EP1079040A3 (fr) 2001-06-13
EP1079040B1 true EP1079040B1 (fr) 2004-09-29

Family

ID=8077835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00115516A Expired - Lifetime EP1079040B1 (fr) 1999-08-21 2000-07-19 Membre tendu libre protégé contre la corrosion, notamment membre de précontrainte externe pour béton précontraint

Country Status (2)

Country Link
EP (1) EP1079040B1 (fr)
DE (2) DE29914673U1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004008621U1 (de) * 2004-06-01 2005-10-06 Dywidag-Systems International Gmbh Ausbildung eines korrosionsgeschützten Zugglieds im Bereich seines Eintritts in ein Bauwerk, insbesondere eines Schrägseils am Pylon einer Schrägseilbrücke
DE102008044918A1 (de) * 2008-03-29 2009-12-10 Spankern Gmbh Koppelhülse zur Sanierung eines Koppelankers für Litzenspannverfahren mit nachträglichem Verbund sowie zur nachträglichen Umnutzung von Fest- und Spannankerköpfen in einen Koppelanker
CN107514097B (zh) * 2017-10-13 2023-08-01 柳州欧维姆机械股份有限公司 预应力波纹管组件及其安装施工方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3437107A1 (de) * 1984-10-10 1986-04-10 Dyckerhoff & Widmann AG, 8000 München Zugglied, insbesondere schraegseil fuer eine schraegseilbruecke
DE3801451C2 (de) 1987-10-15 1994-09-29 Dyckerhoff & Widmann Ag Korrosionsgeschütztes freies Zugglied, vornehmlich Spannglied für Spannbeton ohne Verbund
DE3824107A1 (de) * 1988-06-27 1990-03-15 Werner Zapf Aus mehreren stahlbetonfertigteilen zusammengefuegter baukoerper in einer spannbetonbauweise

Also Published As

Publication number Publication date
EP1079040A3 (fr) 2001-06-13
EP1079040A2 (fr) 2001-02-28
DE29914673U1 (de) 1999-12-16
DE50007969D1 (de) 2004-11-04

Similar Documents

Publication Publication Date Title
DE3734954C2 (fr)
EP1609911B1 (fr) Ouvrage avec d'un élément de tension protégé contre la corrosion, notamment un pont haubané avec d'un câble incliné
EP2729621B1 (fr) Système destiné à supporter un organe de traction, notamment un hauban, dans un sens perpendiculaire à son étendue longitudinale
CH676617A5 (fr)
EP2807317B1 (fr) Tour hybride
DE3224702C2 (de) Vorrichtung zum Verankern und Koppeln eines Bündelspannglieds für Spannbeton
DE3734953A1 (de) Abstandhalter fuer ein spannbares zugglied
EP1490554B1 (fr) Dispositif d'ancrage pour un element de traction protege contre la corrosion, notamment un cable incline de pont haubane
DE3138819A1 (de) Freies zugglied, insbesondere schraegseil fuer eine schraegseilbruecke, und verfahren zu seiner herstellung und seinem einbau
DE102011001250A1 (de) Vorrichtung und Verfahren für den Übergang zwischen einem Stahlturmabschnitt und einem vorgespannten Betonturmabschnitt
EP1609912A1 (fr) Réalisation d'un élément de tension protégé contre la corrosion à la zone du changement de direction dans un support, notamment d'un câble incliné au pylône d'un pont haubané
EP1505223A1 (fr) Tendon protégé contre la corrosion, en particulier pour béton précontraint
DE3434620A1 (de) Abstuetzung eines freien zugglieds, vorzugsweise eines schraegseils einer schraegseilbruecke
DE3218517C2 (de) Tübbingausbau für Tunnels, Stollen o.dgl. und Meßgerät zur Überprüfung der Fugenbreite eines derartigen Tübbingausbaues
CH623376A5 (fr)
DE4433832A1 (de) Korrosionsgeschütztes Zugglied, vornehmlich Spannglied für Spannbeton ohne Verbund
DE3801451C2 (de) Korrosionsgeschütztes freies Zugglied, vornehmlich Spannglied für Spannbeton ohne Verbund
EP1079040B1 (fr) Membre tendu libre protégé contre la corrosion, notamment membre de précontrainte externe pour béton précontraint
DE2425866A1 (de) Kabel fuer schraegkabelbruecken aus spannbeton
DE3302075C2 (de) Verbindung für Spannbeton- oder Stahlbetonbiegeträger
EP0722024A1 (fr) Membre tendu libre protégé contre la corrosion, notamment membre de précontrainte pour béton précontraint sans adhérence
EP0181898A1 (fr) Armature avec parties en acier pour constructions en beton precontraint et elements en beton precontraint prefabrique
DE19502712A1 (de) Deckenplatte für Gebäude
EP0767879A1 (fr) Assemblage de profiles en acier
DE19537399C1 (de) Vorrichtung zur Verankerung von Betonkappen am Überbau von Bauwerken

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR NL

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7E 04C 5/08 A, 7E 04C 5/12 B, 7E 04C 5/10 B

17P Request for examination filed

Effective date: 20010602

AKX Designation fees paid

Free format text: DE FR NL

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DYWIDAG-SYSTEMS INTERNATIONAL GMBH

17Q First examination report despatched

Effective date: 20030807

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR NL

REF Corresponds to:

Ref document number: 50007969

Country of ref document: DE

Date of ref document: 20041104

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ET Fr: translation filed
26N No opposition filed

Effective date: 20050630

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090923

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20100726

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20100802

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110201

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50007969

Country of ref document: DE

Effective date: 20110201

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20120201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20120330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120201