EP1505223A1 - Corrosion protected tendon, especially for prestressed concrete - Google Patents

Corrosion protected tendon, especially for prestressed concrete Download PDF

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Publication number
EP1505223A1
EP1505223A1 EP04017158A EP04017158A EP1505223A1 EP 1505223 A1 EP1505223 A1 EP 1505223A1 EP 04017158 A EP04017158 A EP 04017158A EP 04017158 A EP04017158 A EP 04017158A EP 1505223 A1 EP1505223 A1 EP 1505223A1
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EP
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Prior art keywords
tension member
disc
member according
pressure
strands
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Granted
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EP04017158A
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German (de)
French (fr)
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EP1505223B1 (en
Inventor
Oswald NÜTZEL
Egbert Zimmermann
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Dywidag Systems International GmbH
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Dywidag Systems International GmbH
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Publication of EP1505223A1 publication Critical patent/EP1505223A1/en
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    • 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

Definitions

  • the invention relates to a corrosion-protected tension member, in particular a tendon for prestressed concrete, according to the preamble of patent claim 1.
  • the prestressing is known and without composite.
  • the tendons are located longitudinally movable within the concrete cross-section and are after clamping against the hardened concrete by injecting cement paste in conjunction with it brought surrounding concrete.
  • the tendons are located usually outside the concrete section, but are opposite the building supported; They can be visited at any time, re-tensioned and possibly also be replaced.
  • tension members of this type so-called “monostrands” are often used as tension members.
  • used that is strands of seven steel wires, which protect against corrosion each of an applied by extrusion coat of plastic, for Example Polyethylene, enveloped and from one the gussets between the steel wires and filling the annulus between the strand and sheath Anticorrosion compound, for example, fat, are surrounded; they are also strands known to provide increased protection against corrosion of two such coats are surrounded.
  • the anchorages of the strands at the ends of the tendons are usually from steel anchor plates with conical, then cylindrical holes in the number of strands through which these are inserted and in which they anchored multi-part ring wedges.
  • To anchor the strands it is in each Case necessary to remove the coats of strands in the area of anchorages, so that the anchoring wedges can attack directly on the bare strands.
  • Tendons without composite, which so far essentially as external, that is outside the concrete cross section guided tendons were used experienced increasingly also use as internal tendons, that is within the Concrete section lying tendons.
  • internal tendons As within the concrete section arranged tendons have advantages in static terms, namely with regard to the exploitable lever arm of internal forces;
  • the Clamping force can be controlled by retightening, which in case of prestressing with composite not possible.
  • this type of tendons it is possible to be able to exchange individual tension elements or even the entire bundle.
  • a particular advantage over external tendons is that the Tensioning elements are embedded in the concrete, so that the resulting at deflection points Deflection forces can be absorbed without special measures. In this Often also strands with reinforced coat or double are connected extruded strands used.
  • the invention has the object, a simpler and more economical way of sealing the anchoring area of a generic tension member, in particular for use as a tendon without Composite, to create not only a simple assembly, but also a easier replacement of individual strands and the possibility of using double extruded strands opens up.
  • the main advantage of the invention is the activation of the Gland sealing of the anchoring area by additional Steps to be operated as from the air side of the anchorage ago To avoid bolts or the like.
  • the Rather, seal activated in a simple way that the armature disk in the Assembly of the tension member by pressure-transmitting means in a predetermined Distance is held by the anchor body and that during clamping of the Werglieds taking place longitudinal displacement of the armature disk in the direction of the Anchor body out through the pressure-transmitting means the required surface pressure is exerted on the turn against longitudinal displacement fixed sealing elements.
  • the sealing disc serves as a spacer for the individual tension elements provided perforated disc as an abutment for the sealing disc, for example may be made of soft rubber or foam.
  • this must be the Perforated disk through an abutment on the tubular part of the anchor body on a Longitudinal displacement are hindered; This can be done by appropriate types of Stops on the inner wall of the anchor body happen. If necessary, can also a steel plate for generating a three-dimensional clamping state in the perforated disc are interposed. Through this activated Transverse deformation of the gasket is the cavity against both the PE coats the Strands as well as against the inner wall of the anchor body as an outer cladding reliably sealed.
  • Fig. 1 the anchoring portion 1 of an inventively designed Buchglieds 2 shown in a longitudinal section.
  • the tension member 2 is in the illustrated case a tendon, which, as Fig. 2 reveals, from fifteen individual tension elements 3 exists.
  • the tension elements 3 in turn consist of so-called “monostrands", the means steel wire strands 4, which are used for the corrosion protection of enclosures 5 made of plastic, in particular PE, are surrounded.
  • the spaces between - not shown - individual wires of the strands 4 and the PE jacket 5 are provided with a Corrosion protection material, such as grease, filled.
  • the strands 4 are in an anchor plate 6 made of steel by means of multi-part annular wedges. 7 anchored.
  • the armature disk 6 is provided with bores having a inner cylindrical portion, the air side in a conical Range passes (Fig. 1a).
  • the armature disk 6 is supported in the outer surface 8 of a structure via a Intermediate ring 22 against a flange abutment ring 9 of a tubular Anchor body 10 from which is cast in the building.
  • the anchor body 10 forms in Anchoring area 1, the tubular envelope of the bundle of tension elements 3, then, optionally by means of a transition piece 11, in another Casing 18 can pass.
  • a transition piece 11 for the piping 18 may be smooth or profiled PE pipes, sheet metal pipes or the like can be used.
  • the transition piece 11 consists of plastic, mostly PE; at the same time it serves as a soft diversion for the tension elements 3.
  • the invention extends mainly to the connection of the already applied in the manufacture corrosion protection of the tension elements 3 the anchorage, since in the actual anchoring area, the PE sheaths 5 of Tension elements 3 must be removed so that the wedges 7 directly to the bare Strands 4 can attack.
  • tension member 2 While in the normal range of tension member 2 between the Anchoring areas 1 tightly packed tension elements 3 in the area of Transition piece 11 are spread outwards to them in the area of Anchor plate 6 for anchoring by the ring wedges 7 required distance to bring when entering the actual mooring area they will be replaced by a Spacer acting perforated disc 12 back to the longitudinal axis of the tension member diverted.
  • the perforated disc 12, which consists of plastic and with corresponding Holes is provided is dimensioned so that the tension elements 3 parallel to the Axes of the wedges 7 are guided and that they are the resulting, radially to Longitudinal axis directed towards deflecting forces can absorb.
  • the perforated disc 12 in turn serves as an abutment for a sealing washer 13 soft rubber or foam, with the help of a pressure plate 14a Steel can be brought under surface pressure.
  • a pressure plate 14a Steel can be brought under surface pressure.
  • the perforated disc 12 must be secured against longitudinal displacement. This happens in the example shown by a stop tube 15, which on the inner wall the anchor body 10 is applied and secured thereto, for example by screws is.
  • the protection against longitudinal displacement can also be done by that in the anchor cast body 10 made of cast steel on its inner wall corresponding stop is formed.
  • a further steel plate 14b may be arranged. These Steel plate 14b also supports the perforated disc 12 when receiving the Deflection forces.
  • a pressure tube 16 For applying an axial pressure on the sealing disc 13 by means of Pressure plate 14a is a pressure tube 16, which is the entire bundle Tension elements 3 within the anchor body 10 surrounds and with respect to this is longitudinally displaceable.
  • the length of this pressure tube 16 is dimensioned so that it at the mounting of the anchorage to the degree of compression of the Gasket 13 protrudes beyond the outer surface of the abutment ring 9.
  • the positioning of the armature disk 6 during clamping takes place against the Sealing disk 13 is pressed, whereby this by the appropriate degree is compressed.
  • the cavity within the anchor body 10 against both the PE sheaths 5 of the strands 4 and against the inner wall of the anchor body 10th sealed As a result of the thereby activated transverse deformation of Sealing disk 13, the cavity within the anchor body 10 against both the PE sheaths 5 of the strands 4 and against the inner wall of the anchor body 10th sealed.
  • pressure plate 14a - sealing disc 13 - perforated disc 12 and optionally steel plate 14 b and by the dimensioning of Perforated disk 12 is also the often occurring in known anchorages Disadvantage avoided that the tension elements 3, especially in non-ordered Installation can be displaced in the transverse direction during clamping in the seal and thereby leaks arise.
  • a retaining plate 17 from Steel arranged on the inside of the armature disk 6 .
  • This retaining plate 17 has holes that just the Allow passage of the bare strands 4, while surrounding the strands PE sheaths 5 on the retaining plate 17 find a stop (Fig. 1a).
  • the retaining plate 17 is provided with additional holes, so that the corrosion protection compound in the holes of the armature disk 6 and in the Slots can penetrate between the parts of the ring wedges and there for a perfect corrosion protection of the strands 4 ensures.
  • the assembly of the anchoring training according to the invention can be with reference to FIG. 3 be explained.
  • the anchor body 10 connected to the tubing 18 produced in the required length and in the Formwork of the concrete structure concerned installed.
  • the tension elements 3, that is surrounded by PE sheaths 5 strands 4, are before or after the introduction of the Concretes fed or pushed in a conventional manner.
  • the two PE sheaths When using double-extruded strands, ie strands, the two PE sheaths have previously been the outer PE jacket at a certain distance from to disconnect and remove tensioned strand end. Then the inner PE jacket so far away that he after tightening in the with anticorrosion compound to be filled area 19 of the anchorage ends. The previously peeled outer PE jacket is then postponed again, with the remaining outer jacket connected and cut so far that he is already in the assembly in the Corrosion protection compound to be filled area 19 binds.
  • This distance corresponds to the Compressibility of the sealing washer 12, which then activated in this way is when the armature disk 6 during the tensioning of the strands 4 to the corresponding Route in the anchor body 10 penetrates until it - with the interposition of the Intermediate ring 22 - supported on the abutment ring 9.
  • the clamping channel that is, the cavity between the tension elements 3 and the Piping 18, usually remains free to a possible replacement of Single strands or the entire bundle to simplify.
  • a backfilling for example, to prevent the ingress of water can a non-hardening material such as bentonite or one with less Strength-hardening material such as cement mortar with plastic additive, For example, Styrofoam, to be pressed, which may easily be removed again can be.
  • a non-hardening material such as bentonite or one with less Strength-hardening material such as cement mortar with plastic additive, For example, Styrofoam, to be pressed, which may easily be removed again can be.
  • intermediate ring 22 is used in the replacement of individual strands, including a release of the clamping force is necessary to do so, when re-tensioning the strands a double wedge bite avoid.
  • the intermediate ring 22, which removed before re-tightening the strands is, has such a thickness, which corresponds to the distance to which the "new" wedge bite must be offset against the "old” wedge bite. In this case is to renew Activation of the seal by the sealing washer 12 a to the thickness of Insert intermediate ring 22 shortened anchor tube 16.

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

Abstract

The corrosion-proof tensioning component includes tensioning elements (3) such as steel rods or wires each encased in a plastic cover and with anchoring devices on the ends. A sealing disc (13) on the side facing away from the anchoring plate (6) of the anchoring device is locked against longitudinal displacement in relation to the tubular cover. A pressure plate (14a) penetrated by the tensioning elements lies against the side of the sealing disc which faces the anchoring plate. Pressure means are provided between the anchor plate and the pressure plate.

Description

Beschreibung:Description:

Die Erfindung betrifft ein korrosionsgeschütztes Zugglied, insbesondere ein Spannglied für Spannbeton, gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a corrosion-protected tension member, in particular a tendon for prestressed concrete, according to the preamble of patent claim 1.

Bei der Konstruktion von Bauwerken aus Spannbeton kennt man die Vorspannung mit und ohne Verbund. Bei Vorspannung mit Verbund liegen die Spannglieder längsbeweglich innerhalb des Betonquerschnitts und werden nach dem Spannen gegen den erhärteten Beton durch Injizieren von Zementleim in Verbund mit dem sie umgebenden Beton gebracht. Bei Vorspannung ohne Verbund liegen die Spannglieder meist außerhalb des Betonquerschnitts, sind jedoch gegenüber dem Bauwerk abgestützt; sie können so jederzeit besichtigt, nachgespannt und gegebenenfalls auch ausgewechselt werden.In the construction of prestressed concrete structures, the prestressing is known and without composite. With prestressing with composite, the tendons are located longitudinally movable within the concrete cross-section and are after clamping against the hardened concrete by injecting cement paste in conjunction with it brought surrounding concrete. For prestressing without bond, the tendons are located usually outside the concrete section, but are opposite the building supported; They can be visited at any time, re-tensioned and possibly also be replaced.

Bei Zuggliedern dieser Art werden als Zugelemente vielfach sogenannte "Monolitzen" verwendet, das heißt Litzen aus sieben Stahldrähten, die zum Schutz gegen Korrosion jeweils von einem durch Extrudieren aufgebrachten Mantel aus Kunststoff, zum Beispiel Polyäthylen, umhüllt und von einer die Zwickel zwischen den Stahldrähten und den Ringraum zwischen Litze und Umhüllung ausfüllenden Korrosionsschutzmasse, zum Beispiel Fett, umgeben sind; es sind auch Litzen bekannt, die zum verstärkten Schutz gegen Korrosion von zwei derartigen Mänteln umgeben sind.In tension members of this type, so-called "monostrands" are often used as tension members. used, that is strands of seven steel wires, which protect against corrosion each of an applied by extrusion coat of plastic, for Example Polyethylene, enveloped and from one the gussets between the steel wires and filling the annulus between the strand and sheath Anticorrosion compound, for example, fat, are surrounded; they are also strands known to provide increased protection against corrosion of two such coats are surrounded.

Die Verankerungen der Litzen an den Enden der Spannglieder bestehen in der Regel aus Ankerscheiben aus Stahl mit konischen, anschließend zylindrischen Bohrungen in der Anzahl der Litzen, durch welche diese hindurchgesteckt und in denen sie mittels mehrteiliger Ringkeile verankert werden. Zur Verankerung der Litzen ist es in jedem Fall erforderlich, die Mäntel der Litzen im Bereich der Verankerungen zu entfernen, damit die Verankerungskeile unmittelbar an den blanken Litzen angreifen können.The anchorages of the strands at the ends of the tendons are usually from steel anchor plates with conical, then cylindrical holes in the number of strands through which these are inserted and in which they anchored multi-part ring wedges. To anchor the strands, it is in each Case necessary to remove the coats of strands in the area of anchorages, so that the anchoring wedges can attack directly on the bare strands.

Aus Gründen des Korrosionsschutzes müssen die Hohlräume in den Verankerungsbereichen, in denen die Mäntel der Litzen entfernt wurden, mit einem Material, zum Beispiel Fett, ausgefüllt werden, das dort den Schutz gegen Korrosion gewährleistet. Wenn die Hohlräume zwischen den einzelnen Litzen in den Bereichen der Spannglieder zwischen den Verankerungen an den Enden zum Korrosionsschutz mit einem erhärtenden Material, wie zum Beispiel Zementmörtel, ausgefüllt werden, ist es notwendig, die mit Korrosionsschutzmaterial auszufüllenden Verankerungsbereiche dicht gegenüber diesen Bereichen abzugrenzen.For reasons of corrosion protection, the cavities in the Anchoring areas, where the sheaths of the strands have been removed, with a Material, for example, grease, to be filled in, there the protection against corrosion guaranteed. When the cavities between each strand in the areas the tendons between the anchors at the ends for corrosion protection filled with a hardening material, such as cement mortar, it is necessary to fill in with corrosion protection material To demarcate anchoring areas close to these areas.

Zur Abgrenzung der von Korrosionsschutzmaterial auszufüllenden Verankerungsbereiche eines Zugglieds gegenüber den freien Bereichen ist es bekannt, von den einzelnen Litzen mit ihren Mänteln durchsetzte Dichtelemente aus elastischem Material zu verwenden, die durch in axialer Richtung des Spannglieds ausgeübten Flächendruck zu einer Querausdehnung gebracht werden, um dicht gegen die einzelnen Litzen und gegen die Innenwand der äußeren Umhüllung abzuschließen. Derartige, nach Art einer Stopfbüchse ausgebildete Dichtungen sind zum Beispiel aus EP 0 323 285 B2 und WO 01/20098 A1 bekannt. Dort wird zur Aktivierung der Dichtung durch von der Luftseite der Ankerscheibe aus zu betätigende Schrauben ein Druck auf die zwischen Andruckplatten eingeschlossenen Dichtelemente ausgeübt. Diese Art der Aktivierung der Dichtung erfordert einen großen Aufwand.To delineate the fill of corrosion protection material Anchoring areas of a tension member with respect to the free areas it is known From the individual strands with their coats interspersed sealing elements made of elastic Material to be used by the exerted in the axial direction of the tendon Surface pressure is brought to a transverse extent to close against the individual strands and against the inner wall of the outer sheath complete. Such, designed in the manner of a stuffing box seals are, for example EP 0 323 285 B2 and WO 01/20098 A1. There is to activate the Seal by screws to be operated from the air side of the armature disk Pressure exerted on the trapped between pressure plates sealing elements. This type of activation of the seal requires a lot of effort.

Wenn es trotz aller Vorsichtsmaßnahmen einmal zu Korrosionserscheinungen an einzelnen Litzen kommen sollte, muss, um diese auszutauschen, deren Spannkraft nachgelassen werden. Hierzu müssen vor dem Lösen der Ringkeile der Litzen die Schrauben gelöst werden, welche die zwischen den Andruckplatten eingeschlossenen Dichtungsscheiben zusammenpressen. Aufgrund der eingetretenen Verformungen können die die Dichtung bewirkenden Teile aber oft nicht ohne zusätzlichen Kraftaufwand in ihre ursprüngliche Lage zurückkehren. Zum Austausch einzelner Litzen muss daher regelmäßig die gesamte Ankerscheibe gelöst werden, da ansonsten die Gefahr besteht, dass beim Ziehen der Litzen die verformten Dichtungsscheiben und/oder die Mäntel der Litzen beschädigt werden.If, despite all precautions, once to corrosion single strands should come, in order to exchange these, their elasticity be let down. For this purpose, before loosening the ring wedges of the strands the Loosened screws that enclosed between the pressure plates Compress sealing washers. Due to the occurred deformations However, the parts causing the seal can often not without additional Force to return to their original position. To exchange individual Strands must therefore be regularly solved the entire armature disc, otherwise There is a risk that when pulling the strands the deformed sealing washers and / or the sheaths of the strands are damaged.

Spannglieder ohne Verbund, die bislang im wesentlichen als externe, das heißt außerhalb des Betonquerschnitts geführte Spannglieder verwendet wurden, erfahren zunehmend auch Verwendung als interne Spannglieder, das heißt innerhalb des Betonquerschnitts liegende Spannglieder. Als innerhalb des Betonquerschnitts angeordnete Spannglieder haben sie Vorteile in statischer Hinsicht, nämlich hinsichtlich des ausnutzbaren Hebelarms der inneren Kräfte; außerdem kann die Spannkraft durch Nachspannen kontrolliert werden, was bei Vorspannung mit Verbund nicht möglich ist. Schließlich besteht bei dieser Art von Spanngliedern die Möglichkeit, einzelne Zugelemente oder auch das gesamte Bündel austauschen zu können. Tendons without composite, which so far essentially as external, that is outside the concrete cross section guided tendons were used experienced increasingly also use as internal tendons, that is within the Concrete section lying tendons. As within the concrete section arranged tendons have advantages in static terms, namely with regard to the exploitable lever arm of internal forces; In addition, the Clamping force can be controlled by retightening, which in case of prestressing with composite not possible. Finally, with this type of tendons, it is possible to to be able to exchange individual tension elements or even the entire bundle.

Ein besonderer Vorteil gegenüber externen Spanngliedern besteht darin, dass die Spannglieder im Beton eingebettet sind, so dass die an Umlenkstellen entstehenden Umlenkkräfte ohne besondere Maßnahmen aufgenommen werden können. In diesem Zusammenhang werden oft auch Litzen mit verstärktem Mantel oder doppelt extrudierte Litzen eingesetzt.A particular advantage over external tendons is that the Tensioning elements are embedded in the concrete, so that the resulting at deflection points Deflection forces can be absorbed without special measures. In this Often also strands with reinforced coat or double are connected extruded strands used.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine einfachere und wirtschaftlichere Möglichkeit für eine Abdichtung des Verankerungsbereichs eines gattungsgemäßen Zugglieds, insbesondere zur Verwendung als Spannglied ohne Verbund, zu schaffen, die nicht nur eine einfache Montage, sondern auch einen einfacheren Austausch einzelner Litzen sowie die Möglichkeit der Verwendung doppelt extrudierter Litzen erschließt.Against this background, the invention has the object, a simpler and more economical way of sealing the anchoring area of a generic tension member, in particular for use as a tendon without Composite, to create not only a simple assembly, but also a easier replacement of individual strands and the possibility of using double extruded strands opens up.

Gemäß der Erfindung wird diese Aufgabe durch die im Patentanspruch 1 angegebenen Merkmale gelöst.According to the invention, this object is specified by the in claim 1 Characteristics solved.

Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.Advantageous developments emerge from the subclaims.

Der wesentliche Vorteil der Erfindung besteht darin, die Aktivierung der stopfbüchsenartigen Abdichtung des Verankerungsbereichs durch zusätzliche Arbeitsschritte wie von der Luftseite der Verankerung her zu betätigende Schraubenbolzen oder dergleichen zu vermeiden. Gemäß der Erfindung wird die Dichtung vielmehr auf einfache Weise dadurch aktiviert, dass die Ankerscheibe bei der Montage des Zugglieds durch druckübertragende Mittel in einem vorbestimmten Abstand von dem Ankerkörper gehalten wird und dass bei der beim Spannen des Zugglieds erfolgenden Längsverschiebung der Ankerscheibe in Richtung auf den Ankerkörper hin durch die druckübertragenden Mittel der erforderliche Flächendruck auf die ihrerseits gegen Längsverschiebung fixierten Dichtelemente ausgeübt wird.The main advantage of the invention is the activation of the Gland sealing of the anchoring area by additional Steps to be operated as from the air side of the anchorage ago To avoid bolts or the like. According to the invention, the Rather, seal activated in a simple way that the armature disk in the Assembly of the tension member by pressure-transmitting means in a predetermined Distance is held by the anchor body and that during clamping of the Zugglieds taking place longitudinal displacement of the armature disk in the direction of the Anchor body out through the pressure-transmitting means the required surface pressure is exerted on the turn against longitudinal displacement fixed sealing elements.

Zweckmäßigerweise dient dabei die als Abstandhalter für die einzelnen Zugelemente vorgesehene Lochscheibe als Widerlager für die Dichtungsscheibe, die zum Beispiel aus weichem Gummi oder Schaumstoff bestehen kann. Hierzu muss allerdings die Lochscheibe durch ein Widerlager an dem rohrförmigen Teil des Ankerkörpers an einer Längsverschiebung gehindert werden; dies kann durch entsprechende Arten von Anschlägen an der Innenwand des Ankerkörpers geschehen. Gegebenenfalls kann auch noch eine Stahlplatte zur Erzeugung eines dreidimensionalen Spannzustandes in der Lochscheibe zwischengeschaltet werden. Durch die dadurch aktivierte Querverformung der Dichtscheibe wird der Hohlraum sowohl gegen die PE-Mäntel der Litzen als auch gegen die Innenwandung des Ankerkörpers als äußere Umhüllung zuverlässig abgedichtet.Appropriately, it serves as a spacer for the individual tension elements provided perforated disc as an abutment for the sealing disc, for example may be made of soft rubber or foam. However, this must be the Perforated disk through an abutment on the tubular part of the anchor body on a Longitudinal displacement are hindered; This can be done by appropriate types of Stops on the inner wall of the anchor body happen. If necessary, can also a steel plate for generating a three-dimensional clamping state in the perforated disc are interposed. Through this activated Transverse deformation of the gasket is the cavity against both the PE coats the Strands as well as against the inner wall of the anchor body as an outer cladding reliably sealed.

Weitere Merkmale der Erfindung und dadurch erzielte Vorteile ergeben sich aus der nachstehenden Beschreibung eines Ausführungsbeispiels. Es zeigt

Fig. 1
einen Längsschnitt durch den Verankerungsbereich eines erfindungsgemäß ausgebildeten Zugglieds,
Fig. 1a
ein den Verankerungsbereich umfassendes Detail aus Fig. 1 in größerem Maßstab,
Fig. 2
einen Querschnitt entlang der Linie II-II in Fig. 1 und
Fig. 3
eine Explosionsdarstellung der einzelnen Teile der Verankerung.
Further features of the invention and the advantages achieved thereby will become apparent from the following description of an embodiment. It shows
Fig. 1
a longitudinal section through the anchoring region of an inventively designed tension member,
Fig. 1a
a comprehensive detail of the anchoring area of FIG. 1 on a larger scale,
Fig. 2
a cross section along the line II-II in Fig. 1 and
Fig. 3
an exploded view of the individual parts of the anchorage.

In Fig. 1 ist der Verankerungsbereich 1 eines erfindungsgemäß ausgebildeten Zugglieds 2 in einem Längsschnitt dargestellt. Das Zugglied 2 ist im dargestellten Fall ein Spannglied, das, wie Fig. 2 erkennen lässt, aus fünfzehn einzelnen Zugelementen 3 besteht. Die Zugelemente 3 bestehen ihrerseits aus sogenannten "Monolitzen", das heißt Stahldrahtlitzen 4, die zum Korrosionsschutz von Umhüllungen 5 aus Kunststoff, insbesondere PE, umgeben sind. Die Zwischenräume zwischen den - nicht dargestellten - Einzeldrähten der Litzen 4 und dem PE-Mantel 5 sind mit einem Korrosionsschutzmaterial, zum Beispiel Fett, ausgefüllt.In Fig. 1, the anchoring portion 1 of an inventively designed Zugglieds 2 shown in a longitudinal section. The tension member 2 is in the illustrated case a tendon, which, as Fig. 2 reveals, from fifteen individual tension elements 3 exists. The tension elements 3 in turn consist of so-called "monostrands", the means steel wire strands 4, which are used for the corrosion protection of enclosures 5 made of plastic, in particular PE, are surrounded. The spaces between - not shown - individual wires of the strands 4 and the PE jacket 5 are provided with a Corrosion protection material, such as grease, filled.

Die Litzen 4 sind in einer Ankerscheibe 6 aus Stahl mittels mehrteiliger Ringkeile 7 verankert. Zu diesem Zweck ist die Ankerscheibe 6 mit Bohrungen versehen, die einen inneren zylindrischen Bereich aufweisen, der zur Luftseite hin in einen konischen Bereich übergeht (Fig. 1a).The strands 4 are in an anchor plate 6 made of steel by means of multi-part annular wedges. 7 anchored. For this purpose, the armature disk 6 is provided with bores having a inner cylindrical portion, the air side in a conical Range passes (Fig. 1a).

Die Ankerscheibe 6 stützt sich in der Außenfläche 8 eines Bauwerks über einen Zwischenring 22 gegen einen flanschartigen Widerlagerring 9 eines rohrförmigen Ankerkörpers 10 ab, der in das Bauwerk einbetoniert ist. Der Ankerkörper 10 bildet im Verankerungsbereich 1 die rohrförmige Umhüllung des Bündels von Zugelementen 3, die dann, gegebenenfalls mittels eines Übergangsstücks 11, in eine weitere Verrohrung 18 übergehen kann. Für die Verrohrung 18 können glatte oder profilierte PE-Rohre, Blechrohre oder dergleichen verwendet werden. Das Übergangsstück 11 besteht aus Kunststoff, meist aus PE; es dient so gleichzeitig als weiche Umlenkung für die Zugelemente 3.The armature disk 6 is supported in the outer surface 8 of a structure via a Intermediate ring 22 against a flange abutment ring 9 of a tubular Anchor body 10 from which is cast in the building. The anchor body 10 forms in Anchoring area 1, the tubular envelope of the bundle of tension elements 3, then, optionally by means of a transition piece 11, in another Casing 18 can pass. For the piping 18 may be smooth or profiled PE pipes, sheet metal pipes or the like can be used. The transition piece 11 consists of plastic, mostly PE; at the same time it serves as a soft diversion for the tension elements 3.

Während der vorstehend beschriebene Aufbau eines derartigen Zugglieds im wesentlichen bekannt ist, erstreckt sich die Erfindung vor allem auf den Anschluss des bereits bei der Herstellung aufgebrachten Korrosionsschutzes der Zugelemente 3 an die Verankerung, da im eigentlichen Verankerungsbereich die PE-Mäntel 5 der Zugelemente 3 entfernt werden müssen, damit die Keile 7 unmittelbar an den blanken Litzen 4 angreifen können.During the above-described construction of such a tension member in is essentially known, the invention extends mainly to the connection of the already applied in the manufacture corrosion protection of the tension elements 3 the anchorage, since in the actual anchoring area, the PE sheaths 5 of Tension elements 3 must be removed so that the wedges 7 directly to the bare Strands 4 can attack.

Während die im normalen Bereich des Zugglieds 2 zwischen den Verankerungsbereichen 1 eng gepackten Zugelemente 3 im Bereich des Übergangsstücks 11 nach außen gespreizt werden, um sie auf den im Bereich der Ankerscheibe 6 zur Verankerung durch die Ringkeile 7 benötigten Abstand zu bringen, werden sie beim Eintritt in den eigentlichen Verankerungsbereich durch eine als Abstandhalter wirkende Lochscheibe 12 wieder zur Längsachse des Zugglieds hin umgelenkt. Die Lochscheibe 12, die aus Kunststoff besteht und mit entsprechenden Bohrungen versehen ist, ist so dimensioniert, dass die Zugelemente 3 parallel zu den Achsen der Keile 7 geführt werden und dass sie die dabei entstehenden, radial zur Längsachse hin gerichteten Umlenkkräfte aufnehmen kann.While in the normal range of tension member 2 between the Anchoring areas 1 tightly packed tension elements 3 in the area of Transition piece 11 are spread outwards to them in the area of Anchor plate 6 for anchoring by the ring wedges 7 required distance to bring when entering the actual mooring area they will be replaced by a Spacer acting perforated disc 12 back to the longitudinal axis of the tension member diverted. The perforated disc 12, which consists of plastic and with corresponding Holes is provided is dimensioned so that the tension elements 3 parallel to the Axes of the wedges 7 are guided and that they are the resulting, radially to Longitudinal axis directed towards deflecting forces can absorb.

Die Lochscheibe 12 dient ihrerseits als Widerlager für eine Dichtungsscheibe 13 aus weichem Gummi oder aus Schaumstoff, die mit Hilfe einer Andruckplatte 14a aus Stahl unter Flächendruck gebracht werden kann. Um einen solchen Druck aufbringen zu können, muss die Lochscheibe 12 gegen Längsverschiebung gesichert sein. Dies geschieht im dargestellten Beispiel durch ein Anschlagrohr 15, das an der Innenwand des Ankerkörpers 10 anliegt und an diesem zum Beispiel durch Schrauben befestigt ist. Die Sicherung gegen Längsverschiebung kann aber auch dadurch geschehen, dass in den aus Stahlguss bestehenden Ankerkörper 10 an seiner Innenwand ein entsprechender Anschlag angeformt wird.The perforated disc 12 in turn serves as an abutment for a sealing washer 13 soft rubber or foam, with the help of a pressure plate 14a Steel can be brought under surface pressure. To apply such pressure To be able to, the perforated disc 12 must be secured against longitudinal displacement. This happens in the example shown by a stop tube 15, which on the inner wall the anchor body 10 is applied and secured thereto, for example by screws is. The protection against longitudinal displacement can also be done by that in the anchor cast body 10 made of cast steel on its inner wall corresponding stop is formed.

Um eine Einspannung der Lochscheibe 12 und einen dreiachsigen Spannungszustand zu erreichen, kann auf der der Ankerscheibe 6 abgewandten Seite der Lochscheibe 12, analog der Andruckplatte 14a, eine weitere Stahlplatte 14b angeordnet sein. Diese Stahlplatte 14b unterstützt zugleich die Lochscheibe 12 bei der Aufnahme der Umlenkkräfte.To a clamping of the perforated disc 12 and a three-axis voltage state can reach, on the armature disk 6 opposite side of the perforated disc 12, analogous to the pressure plate 14a, a further steel plate 14b may be arranged. These Steel plate 14b also supports the perforated disc 12 when receiving the Deflection forces.

Zum Aufbringen eines axialen Drucks auf die Dichtungsscheibe 13 mittels der Andruckplatte 14a dient ein Andruckrohr 16, welches das gesamte Bündel aus Zugelementen 3 innerhalb des Ankerkörpers 10 umgibt und gegenüber diesem längsverschiebbar ist. Die Länge dieses Andruckrohrs 16 ist so bemessen, dass es bei der Montage der Verankerung um das Maß der Zusammendrückung der Dichtungsscheibe 13 über die Außenfläche des Widerlagerrings 9 hinausragt. Infolge der beim Spannen erfolgenden Positionierung der Ankerscheibe 6 wird es gegen die Dichtungsscheibe 13 gedrückt, wodurch diese um das entsprechende Maß zusammengepresst wird. Infolge der dadurch aktivierten Querverformung der Dichtungsscheibe 13 wird der Hohlraum innerhalb des Ankerkörpers 10 sowohl gegen die PE-Mäntel 5 der Litzen 4 als auch gegen die Innenwand des Ankerkörpers 10 abgedichtet.For applying an axial pressure on the sealing disc 13 by means of Pressure plate 14a is a pressure tube 16, which is the entire bundle Tension elements 3 within the anchor body 10 surrounds and with respect to this is longitudinally displaceable. The length of this pressure tube 16 is dimensioned so that it at the mounting of the anchorage to the degree of compression of the Gasket 13 protrudes beyond the outer surface of the abutment ring 9. As a result the positioning of the armature disk 6 during clamping takes place against the Sealing disk 13 is pressed, whereby this by the appropriate degree is compressed. As a result of the thereby activated transverse deformation of Sealing disk 13, the cavity within the anchor body 10 against both the PE sheaths 5 of the strands 4 and against the inner wall of the anchor body 10th sealed.

Durch die gewählte Anordnung Andruckplatte 14a - Dichtungsscheibe 13 - Lochscheibe 12 und gegebenenfalls Stahlplatte 14b sowie durch die Dimensionierung der Lochscheibe 12 wird außerdem der bei bekannten Verankerungen oft auftretende Nachteil vermieden, dass sich die Zugelemente 3 vor allem bei nicht geordnetem Einbau beim Spannen in der Dichtung in Querrichtung verschieben können und dadurch Undichtigkeiten entstehen.By the selected arrangement pressure plate 14a - sealing disc 13 - perforated disc 12 and optionally steel plate 14 b and by the dimensioning of Perforated disk 12 is also the often occurring in known anchorages Disadvantage avoided that the tension elements 3, especially in non-ordered Installation can be displaced in the transverse direction during clamping in the seal and thereby leaks arise.

Um zu vermeiden, dass die PE-Mäntel 5 der Litzen 4 bei der Montage oder beim Spannen in die Bohrungen der Ankerscheibe 6 vor den Keilen 7 eindringen können und dort möglicherweise die nachträgliche Verfüllung mit Korrosionsschutzmaterial behindern, wird an der Innenseite der Ankerscheibe 6 eine Rückhalteplatte 17 aus Stahl angeordnet. Diese Rückhalteplatte 17 weist Bohrungen auf, die gerade den Durchtritt der blanken Litzen 4 erlauben, während die die Litzen umgebenden PE-Mäntel 5 an der Rückhalteplatte 17 einen Anschlag finden (Fig. 1a).To avoid that the PE sheaths 5 of the strands 4 during assembly or during Spans can penetrate into the holes of the armature disk 6 in front of the wedges 7 and there possibly the subsequent backfilling with corrosion protection material hinder, on the inside of the armature disk 6, a retaining plate 17 from Steel arranged. This retaining plate 17 has holes that just the Allow passage of the bare strands 4, while surrounding the strands PE sheaths 5 on the retaining plate 17 find a stop (Fig. 1a).

Um die nachträgliche Verfüllung der Hohlräume mit Korrosionsschutzmaterial nicht zu behindern, muss die Rückhalteplatte 17 durch Abstandhalter in einem gewissen, wenn auch geringen Abstand von der Innenseite der Ankerscheibe 6 gehalten werden. Zweckmäßigerweise ist die Rückhalteplatte 17 mit zusätzlichen Bohrungen versehen, so dass die Korrosionsschutzmasse in die Bohrungen der Ankerscheibe 6 und in die Schlitze zwischen den Teilen der Ringkeile eindringen kann und dort für einen einwandfreien Korrosionsschutz der Litzen 4 sorgt.To the subsequent backfilling of the cavities with corrosion protection material not to hinder the retaining plate 17 by spacers in a certain, if Even small distance from the inside of the armature disk 6 are held. Conveniently, the retaining plate 17 is provided with additional holes, so that the corrosion protection compound in the holes of the armature disk 6 and in the Slots can penetrate between the parts of the ring wedges and there for a perfect corrosion protection of the strands 4 ensures.

Die Montage der erfindungsgemäßen Verankerungsausbildung kann anhand Fig. 3 erläutert werden. Bei bauseitiger Montage des Zugglieds 2 wird der Ankerkörper 10 mit der in der erforderlichen Länge hergestellten Verrohrung 18 verbunden und in die Schalung des betreffenden Betonbauwerks eingebaut. Die Zugelemente 3, das heißt die von PE-Mänteln 5 umgebenen Litzen 4, werden vor oder nach dem Einbringen des Betons in an sich bekannter Weise eingezogen oder eingeschoben.The assembly of the anchoring training according to the invention can be with reference to FIG. 3 be explained. For on-site installation of the tension member 2, the anchor body 10 connected to the tubing 18 produced in the required length and in the Formwork of the concrete structure concerned installed. The tension elements 3, that is surrounded by PE sheaths 5 strands 4, are before or after the introduction of the Concretes fed or pushed in a conventional manner.

Um die gewünschte Auswechselbarkeit der Litzen im Bereich der Dichtung gewährleisten zu können, müssen die einzelnen Litzen 4 im Bereich der Dichtungsscheibe 13 von Rohren 23 umgeben sein, die zwar nach außen hin die Dichtung gewährleisten, durch welche die Litzen aber hindurchgezogen werden können. Bei einfach extrudierten Litzen können nach dem Einschieben der Litzen Teleskoprohre von der Luftseite her auf die Litzenenden aufgeschoben werden, welche die Dichtungsscheibe 13 durchdringen. In jedem Fall finden die Rohre 23 an der Rückhalteplatte 17 ein Widerlager (Fig. 1a).To the desired interchangeability of the strands in the area of the seal To ensure that the individual strands 4 in the area of Sealing disk 13 may be surrounded by tubes 23, although outwardly the Ensure seal, through which the strands are pulled through can. With simply extruded strands can after insertion of the strands Telescopic tubes are pushed from the air side onto the strand ends, which penetrate the sealing washer 13. In any case, find the tubes 23 at the Retaining plate 17 an abutment (Fig. 1a).

Bei Verwendung von doppelt extrudierten Litzen, das heißt von Litzen, die zwei PE-Mäntel aufweisen, ist zuvor der äußere PE-Mantel in einem bestimmten Abstand vom spannseitigen Litzenende zu trennen und abzuziehen. Sodann wird der innere PE-Mantel so weit entfernt, dass er nach dem Spannen in dem mit Korrosionsschutzmasse zu verfüllenden Bereich 19 der Verankerung endet. Der zuvor abgezogene äußere PE-Mantel wird dann wieder aufgeschoben, mit dem noch vorhandenen äußeren Mantel verbunden und so weit abgelängt, dass er bereits bei der Montage in den mit Korrosionsschutzmasse zu verfüllenden Bereich 19 einbindet.When using double-extruded strands, ie strands, the two PE sheaths have previously been the outer PE jacket at a certain distance from to disconnect and remove tensioned strand end. Then the inner PE jacket so far away that he after tightening in the with anticorrosion compound to be filled area 19 of the anchorage ends. The previously peeled outer PE jacket is then postponed again, with the remaining outer jacket connected and cut so far that he is already in the assembly in the Corrosion protection compound to be filled area 19 binds.

Nach dem Einbau aller Litzen werden zunächst die Lochscheibe 12, gegebenenfalls zuvor die Stahlplatte 14b, die Dichtungsscheibe 13, die Andruckplatte 14a und das Andruckrohr 16 sowie die Rückhalteplatte 17 eingebaut. Dadurch, dass alle diese Teile nur auf die Zugelemente 3 auf- und in den Ankerkörper 10 eingeschoben werden müssen, also keinerlei Schraubvorgänge erforderlich sind, ist eine einfache und zeitsparende Montage möglich. Die Montage kann noch dadurch vereinfacht werden, dass die Andruckplatte 14a und das Andruckrohr 16 zu einem topfförmigen Einbauteil vereinigt werden. Zuletzt wird die Ankerscheibe 6 auf die herausstehenden Litzenenden aufgefädelt.After installation of all strands are first perforated disk 12, if necessary previously the steel plate 14b, the sealing washer 13, the pressure plate 14a and the Pressure tube 16 and the retaining plate 17 installed. By doing all of these parts only on the tension elements 3 and are inserted into the anchor body 10 need, so no screwing operations are required, is a simple and time-saving installation possible. The assembly can be further simplified by that the pressure plate 14a and the pressure tube 16 to a cup-shaped mounting part to be united. Last, the armature disk 6 is on the protruding Stranded stranded.

In diesem Montagezustand liegt die Ankerscheibe 6, die etwas in den Ankerkörper 10 hineinragt, also an dessen Innenwand eine Führung findet, in einem geringen Abstand vor dem Widerlagerring 9, legt sich aber mit ihrer Innenfläche gegen das Andruckrohr 16, das seinerseits auf die Andruckplatte 14a drückt. Dieser Abstand entspricht der Zusammendrückbarkeit der Dichtungsscheibe 12, die auf diese Weise dann aktiviert wird, wenn die Ankerscheibe 6 beim Spannen der Litzen 4 um die entsprechende Strecke in den Ankerkörper 10 eindringt, bis sie sich - unter Zwischenlage des Zwischenrings 22 - auf den Widerlagerring 9 abstützt.In this mounting state, the armature disk 6, which is slightly in the anchor body 10th protrudes, so finds a guide on the inner wall, at a small distance in front of the abutment ring 9, but lies down with its inner surface against the pressure tube 16, which in turn presses on the pressure plate 14a. This distance corresponds to the Compressibility of the sealing washer 12, which then activated in this way is when the armature disk 6 during the tensioning of the strands 4 to the corresponding Route in the anchor body 10 penetrates until it - with the interposition of the Intermediate ring 22 - supported on the abutment ring 9.

Die Verfüllung des Hohlraumes 19 zwischen der Dichtung 13 und der Ankerscheibe 6 mit Korrosionsschutzmasse erfolgt dann wieder in an sich bekannter Weise nach dem Spannen der Zugelemente 3 durch Bohrungen in der Ankerscheibe 6, durch die eine Injizierlanze eingeführt werden kann. Schließlich wird auf den Widerlagerring 9 des Ankerkörpers 6 eine Abdeckung 20 aufgesetzt, um durch Einpressen von Korrosionsschutzmaterial 21 auch die Ankerscheibe 6 mit den Keilverankerungen der Litzen 4 gegen Korrosion zu schützen.The backfilling of the cavity 19 between the seal 13 and the armature disc. 6 with anticorrosion compound is then carried out in a conventional manner after the Clamping the tension elements 3 through holes in the armature disk 6, through which a Injizierlanze can be introduced. Finally, on the abutment ring 9 of Anchor body 6, a cover 20 placed to press by Corrosion protection material 21 and the anchor plate 6 with the wedge anchorages of Strands 4 to protect against corrosion.

Der Spannkanal, das heißt der Hohlraum zwischen den Zugelementen 3 und der Verrohrung 18, bleibt in der Regel frei, um ein eventuelles Auswechseln von Einzellitzen bzw. des gesamten Bündels zu vereinfachen. Wenn eine Verfüllung gewünscht wird, um beispielsweise das Eindringen von Wasser zu verhindern, kann ein nicht erhärtendes Material wie zum Beispiel Bentonit oder ein mit geringer Festigkeit aushärtendes Material wie zum Beispiel Zementmörtel mit Kunststoffzusatz, zum Beispiel Styropor, eingepresst werden, das gegebenenfalls leicht wieder entfernt werden kann. Dazu sind in an sich bekannter Weise Entlüftungs- und Injizieröffnungen an dem Ankerkörper 10 vorgesehen. Diese Öffnungen können bei nicht verfüllten Spannkanälen zur Entwässerung verwendet werden.The clamping channel, that is, the cavity between the tension elements 3 and the Piping 18, usually remains free to a possible replacement of Single strands or the entire bundle to simplify. If a backfilling is desired, for example, to prevent the ingress of water can a non-hardening material such as bentonite or one with less Strength-hardening material such as cement mortar with plastic additive, For example, Styrofoam, to be pressed, which may easily be removed again can be. These are in a conventional manner venting and Injizieröffnungen provided on the anchor body 10. These openings can be filled when not filled Chutes are used for drainage.

Der zwischen der Ankerscheibe 6 und dem Widerlagerring 9 angeordnete Zwischenring 22 dient bei der Auswechselung einzelner Litzen, wozu ein Ablassen der Spannkraft erforderlich ist, dazu, beim Wiederanspannen der Litzen einen doppelten Keilbiss zu vermeiden. Der Zwischenring 22, der vor dem Wiederanspannen der Litzen ausgebaut wird, hat eine solche Dicke, die dem Abstand entspricht, um den der "neue" Keilbiss gegenüber dem "alten" Keilbiss versetzt sein muss. In diesem Fall ist zur erneuten Aktivierung der Dichtung durch die Dichtscheibe 12 ein um die Dicke des Zwischenrings 22 verkürztes Ankerrohr 16 einzubauen.The arranged between the armature disk 6 and the abutment ring 9 intermediate ring 22 is used in the replacement of individual strands, including a release of the clamping force is necessary to do so, when re-tensioning the strands a double wedge bite avoid. The intermediate ring 22, which removed before re-tightening the strands is, has such a thickness, which corresponds to the distance to which the "new" wedge bite must be offset against the "old" wedge bite. In this case is to renew Activation of the seal by the sealing washer 12 a to the thickness of Insert intermediate ring 22 shortened anchor tube 16.

Claims (14)

Korrosionsgeschütztes Zugglied, insbesondere Spannglied für Spannbeton, aus einer Mehrzahl von innerhalb einer rohrförmigen Umhüllung angeordneten Zugelementen (3) wie Stahlstäben, -drähten oder -litzen,
die ihrerseits von je mindestens einer Umhüllung aus Kunststoff umgeben sind, wobei das Zugglied (2) an seinen Enden Ankervorrichtungen mit jeweils einer mit Bohrungen für den Durchtritt der Zugelemente versehenen Ankerscheibe (6) aufweist und
wobei an der der Luftseite abgewandten Seite der Ankerscheibe (6) mindestens eine von den Zugelementen (3) durchsetzte Dichtungsscheibe (13) angeordnet ist, auf die ein Flächendruck aufbringbar ist und der eine als Abstandhalter dienende Lochscheibe (12) nachgeordnet ist,
dadurch gekennzeichnet, dass die Dichtungsscheibe (13) auf der der Ankerscheibe (6) abgewandten Seite gegenüber der rohrförmigen Umhüllung gegen Längsverschiebung arretiert ist, dass an der der Ankerscheibe (6) zugewandten Seite der Dichtungsscheibe (13) eine ebenfalls von den Zugelementen (3) durchsetzte Andruckplatte (14a) anliegt und
dass zwischen der Ankerscheibe (6) und der Andruckplatte (14a) druckübertragende Mittel vorgesehen sind.Corrosion-resistant tension member, in particular prestressing element for prestressed concrete, comprising a plurality of tension elements (3), such as steel rods, wires or strands, arranged within a tubular sheath,
which in turn are each surrounded by at least one envelope made of plastic, wherein the tension member (2) has at its ends anchor devices, each with a provided with holes for the passage of the tension elements anchor plate (6) and
wherein on the side facing away from the air side of the armature disk (6) at least one of the tension elements (3) interspersed sealing disc (13) is arranged, on which a surface pressure can be applied and a serving as a spacer perforated disk (12) is arranged downstream,
characterized in that the sealing disc (13) on the side facing away from the armature disc (6) relative to the tubular sheath is locked against longitudinal displacement, that at the armature disc (6) side facing the sealing disc (13) also from the tension elements (3) penetrated pressure plate (14a) is applied and
in that pressure-transmitting means are provided between the armature disk (6) and the pressure plate (14a). Zugglied nach Anspruch 1, dadurch gekennzeichnet, dass die Länge der druckübertragenden Mittel so bemessen ist, dass eine beim Spannen der Zugelemente (3) erfolgende Längsverschiebung der Ankerscheibe (6) die Aufbringung des Flächendrucks auf die Dichtungsscheibe (13) bewirkt.Tension member according to claim 1, characterized in that the length of the pressure-transmitting means is dimensioned so that when tensioning the tension elements (3) takes place longitudinal displacement of the armature disc (6) causes the application of the surface pressure on the sealing disc (13). Zugglied nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Dichtungsscheibe (13) auf der der Ankerscheibe (6) abgewandten Seite an der Lochscheibe (12) anliegt, die ihrerseits gegenüber der rohrförmigen Umhüllung (10) gegen Längsverschiebung arretiert ist.Tension member according to claim 1 or 2, characterized in that the sealing disc (13) on the armature disc (6) facing away from the perforated disc (12), which in turn is locked against longitudinal displacement of the tubular sheath (10). Zugglied nach Anspruch 3, dadurch gekennzeichnet, dass an der der Ankerscheibe (6) abgewandten Seite der Lochscheibe (12) eine Stahlplatte (14b) anliegt, die ihrerseits gegenüber der rohrförmigen Umhüllung (10) gegen Längsverschiebung arretiert ist und ein Widerlager für die Lochscheibe (12) und die Dichtungsscheibe (13) bildet.Tension member according to claim 3, characterized in that on the armature disc (6) facing away from the perforated disc (12) a steel plate (14b) rests, which in turn is locked against longitudinal displacement of the tubular sheath (10) and an abutment for the perforated disc ( 12) and the sealing disc (13) forms. Zugglied nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zur Arretierung der Dichtungsscheibe (12) und/oder der Lochscheibe (13) und/oder der Stahlplatte (14b) an der Innenseite der rohrförmigen Umhüllung (10) Anschläge, zum Beispiel ein Anschlagrohr (15), vorgesehen sind.Tension member according to one of claims 1 to 4, characterized in that for locking the sealing disc (12) and / or the perforated disc (13) and / or the steel plate (14b) on the inside of the tubular casing (10) stops, for example a Stop tube (15) are provided. Zugglied nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass als druckübertragende Mittel mindestens ein Andruckrohr (16) vorgesehen ist.Tension member according to one of claims 2 to 5, characterized in that at least one pressure tube (16) is provided as the pressure-transmitting means. Zugglied nach Anspruch 6, dadurch gekennzeichnet, dass ein Andruckrohr (16) vorgesehen ist, dessen Außendurchmesser etwas geringer ist als der Innendurchmesser der rohrförmigen Umhüllung (10).Tension member according to claim 6, characterized in that a pressure tube (16) is provided, whose outer diameter is slightly smaller than the inner diameter of the tubular sheath (10). Zugglied nach Anspruch 7, dadurch gekennzeichnet, dass das Andruckrohr (16) und die Andruckplatte (14) zu einem topfförmigen Einbauteil zusammengefasst sind.Tension member according to claim 7, characterized in that the pressure tube (16) and the pressure plate (14) are combined to form a cup-shaped mounting part. Zugglied nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass im Bereich des Eintritts der Zugelemente (3) in den Ankerkörper (10) Anschläge zur Rückhaltung der die Litzen (4) umgebenden Umhüllungen (5) vorgesehen sind.Tension member according to one of claims 1 to 8, characterized in that in the region of the entry of the tension elements (3) in the anchor body (10) stops for the retention of the strands (4) surrounding sheaths (5) are provided. Zugglied nach Anspruch 9, dadurch gekennzeichnet, dass die Anschläge durch eine Rückhalteplatte (17) gebildet sind, die Bohrungen aufweist, deren Durchmesser im wesentlichen dem Außendurchmesser der von den Umhüllungen (5) befreiten Litzen (4) entsprechen.Tension member according to claim 9, characterized in that the stops are formed by a retaining plate (17) having holes whose diameters substantially correspond to the outer diameter of the sheaths (5) liberated strands (4). Zugglied nach Anspruch 10, dadurch gekennzeichnet, dass die Rückhalteplatte (17) gegenüber der Ankerscheibe (6) abgestützt ist.Tension member according to claim 10, characterized in that the retaining plate (17) relative to the armature disc (6) is supported. Zugglied nach Anspruch 11, dadurch gekennzeichnet, dass die Rückhalteplatte
(17) im Abstand von der Ankerscheibe (6) gehalten ist.Tension member according to claim 11, characterized in that the retaining plate
(17) is held at a distance from the armature disk (6). Zugglied nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Zugelemente (3) im Bereich ihres Durchtritts durch die Dichtungsscheibe (13) einzeln längsbeweglich in Rohren (23) geführt sind, gegenüber denen die Dichtung wirkt.Tension member according to one of claims 1 to 12, characterized in that the tension elements (3) in the region of their passage through the sealing disc (13) are guided individually longitudinally movable in tubes (23) against which the seal acts. Zugglied nach Anspruch 13, dadurch gekennzeichnet, dass die Rohre (23) sich gegen die Rückhalteplatte (17) abstützen.Tension member according to claim 13, characterized in that the tubes (23) are supported against the retaining plate (17).
EP04017158A 2003-08-02 2004-07-21 Corrosion protected tendon, especially for prestressed concrete Not-in-force EP1505223B1 (en)

Applications Claiming Priority (2)

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DE20311950U DE20311950U1 (en) 2003-08-02 2003-08-02 Corrosion-protected tension member, in particular tendon for prestressed concrete
DE20311950U 2003-08-02

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EP1505223A1 true EP1505223A1 (en) 2005-02-09
EP1505223B1 EP1505223B1 (en) 2006-11-22

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US (1) US7174684B2 (en)
EP (1) EP1505223B1 (en)
JP (1) JP4683876B2 (en)
CN (1) CN100371551C (en)
AT (1) ATE346199T1 (en)
DE (2) DE20311950U1 (en)
ES (1) ES2274353T3 (en)

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CN108951421A (en) * 2018-08-30 2018-12-07 柳州欧维姆机械股份有限公司 It is a kind of suitable for PE sheath expands with heat and contract with cold outside drag-line water-tight device

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ES2697999T3 (en) * 2009-12-23 2019-01-30 Geotech Pty Ltd An anchoring system
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RU2515660C1 (en) * 2010-03-26 2014-05-20 Фсл Интернациональ Аг Compacting structure
JP5581136B2 (en) * 2010-07-20 2014-08-27 新日鉄住金エンジニアリング株式会社 FIXING STRUCTURE, FIXING STRUCTURE, AND FIXING METHOD
FR2973818B1 (en) * 2011-04-07 2017-06-02 Soletanche Freyssinet METHOD AND DEVICE FOR PROTECTING THE END OF AN ANCORED CABLE
PL2697446T3 (en) * 2011-04-15 2016-09-30 Anchoring assembly
ES2393003B1 (en) * 2011-04-15 2013-10-23 Formaciones Micropilotes Y Anclajes97, S.L. HEAD EMBUTIDA FOR ANCHORS, PERMANENT OR PROVISIONAL, IN CONSTRUCTION SYSTEMS.
MX339730B (en) 2011-04-15 2016-06-06 Soletanche Freyssinet Method of protecting the end of a multi-tendon cable.
CN102953334B (en) * 2011-08-27 2016-03-16 上海浦江缆索股份有限公司 Tube expansion sealing type guy cable and using method thereof
CN102979253A (en) * 2012-12-13 2013-03-20 大连民族学院 Anchor system for fixing steel strand in pre-stressed structure
CN103147538B (en) * 2013-03-01 2015-12-30 柳州欧维姆机械股份有限公司 A kind of anchor head sealing structural component
DE102013215136A1 (en) * 2013-08-01 2015-02-05 Dywidag-Systems International Gmbh Corrosion-protected tension member and plastically deformable disc made of anti-corrosion material for such a tension member
CN105604332B (en) * 2016-01-20 2018-06-22 威胜利工程有限公司 Steel strand wires thread guide device
CN106049251B (en) * 2016-07-29 2018-08-10 安徽金星预应力工程技术有限公司 A kind of multi-layer anticorrosion saddle end seal with double locators
CN111844388B (en) * 2020-07-15 2021-12-21 陕西建工第一建设集团有限公司 Concrete prefabricated part mould
CN112900267B (en) * 2021-01-12 2022-10-04 中国建筑第八工程局有限公司 Tensioning and anchoring system and method for carbon fiber plate bundles
CN113309296A (en) * 2021-06-21 2021-08-27 马献林 Fiber composite material inhaul cable elastic anchorage device
CN113463515B (en) * 2021-07-18 2023-01-03 广西路建工程集团有限公司 Construction method of double-sealing inhaul cable anchorage device
US20230295891A1 (en) * 2022-03-17 2023-09-21 Rute Foundation Systems, Inc. Post-tensioned wind turbine foundation
US11965334B1 (en) * 2024-01-11 2024-04-23 King Faisal University Multi-layer wedge anchorage for fiber-reinforced polymer (FRP) plates and tendons

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WO2014095330A1 (en) 2012-12-18 2014-06-26 Wobben Properties Gmbh Anchor, tensioning device, wind turbine and method for putting tensile element strands under tensile stress on an anchor
US9677275B2 (en) 2012-12-18 2017-06-13 Wobben Properties Gmbh Anchor, tensioning device, wind energy plant and method for tensioning tensile cords on an anchor
CN108951421A (en) * 2018-08-30 2018-12-07 柳州欧维姆机械股份有限公司 It is a kind of suitable for PE sheath expands with heat and contract with cold outside drag-line water-tight device
CN108951421B (en) * 2018-08-30 2023-07-25 柳州欧维姆机械股份有限公司 Waterproof device suitable for expansion with heat and contraction with cold of PE sheath outside inhaul cable

Also Published As

Publication number Publication date
DE20311950U1 (en) 2004-12-09
JP2005054568A (en) 2005-03-03
CN100371551C (en) 2008-02-27
US7174684B2 (en) 2007-02-13
CN1594798A (en) 2005-03-16
ATE346199T1 (en) 2006-12-15
DE502004002057D1 (en) 2007-01-04
US20050034392A1 (en) 2005-02-17
JP4683876B2 (en) 2011-05-18
EP1505223B1 (en) 2006-11-22
ES2274353T3 (en) 2007-05-16

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