EP1210478B1 - Tensioning mechanism, anchoring of said tensioning mechanism and method for producing said anchoring - Google Patents

Tensioning mechanism, anchoring of said tensioning mechanism and method for producing said anchoring Download PDF

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Publication number
EP1210478B1
EP1210478B1 EP00958034A EP00958034A EP1210478B1 EP 1210478 B1 EP1210478 B1 EP 1210478B1 EP 00958034 A EP00958034 A EP 00958034A EP 00958034 A EP00958034 A EP 00958034A EP 1210478 B1 EP1210478 B1 EP 1210478B1
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EP
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Prior art keywords
tendon
anchoring
elements
section
tendons
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EP00958034A
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German (de)
French (fr)
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EP1210478A2 (en
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Hermann Thal
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Individual
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Individual
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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
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/22—Flat or flat-sided ropes; Sets of ropes consisting of a series of parallel ropes
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2083—Jackets or coverings
    • D07B2201/2087—Jackets or coverings being of the coated type

Definitions

  • the invention relates to a tendon according to the preamble of claim 1 for use in structures in construction, in particular those that require bondless pretensioning becomes.
  • Anchoring is another object of the invention of the tendon according to the invention in an anchor body.
  • FR 2 675 523 A and US 3 500 625 A are tension cables, consisting of hexagonal shaped strands became known. at such tension cables, which were enclosed by a plastic sheath there is a risk that the sheathing through the plurality of peripheral edges of the strands is damaged, which causes cracks in the casing, the moisture to allow the strands to penetrate and cause corrosion damage.
  • a prestressing steels are those mentioned at the beginning kind known that is rounded on the side and with rib-like surface profiling that runs obliquely to the longitudinal axis of the strand are provided.
  • prestressing steels and their Anchoring wedges require relatively complex tools, the occurring due to in a clamping element Cross pressing on neighboring elements are relatively high.
  • tensioning element according to the invention there is also a substantial saving in purchasing and Manufacturing costs, since the stranding required for strands the wires in the steel mill are omitted and also the most compact Shape of the tendon exists because between the individual tendons are not cavities.
  • the measure is the same for the production of a strap Claim 2 of particular advantage.
  • the individual clamping elements are with grease and / or one Plastic film wrapped.
  • GB 885 265 A discloses clamping a single one hexagonal tendon in an anchor head by anchoring wedges, which on their surface facing the tendon even and on the inner wall of the holes of the anchor body are designed in the shape of a cone segment. It is not in this form possible to use several tendons with rectangular or square Clamp the cross-section of the clamping elements together.
  • the measure according to claim 3 is simple time and cost-saving anchoring of the tendon of the invention Design in an anchoring body.
  • DE 25 15 423 A shows anchoring two side by side horizontal tendons, but in this case they are anchoring members formed as strands, in which in one Plastic body a variety of parallel Wires is embedded. In such a tendon are for high load capacities large cross sections of the tendon required, which prevented by the measure according to the invention according to claim 4 becomes.
  • a only clamping element 1 with a rectangular cross section is provided, which is enclosed by a protective cover 2, which is preferably consists of plastic.
  • a protective cover 2 which is preferably consists of plastic.
  • a very thin intermediate layer 3 be made of fat or and and plastic film.
  • a tendon according to FIG. 2 in The shape of a strap is two clamping elements 1 of rectangular Cross section provided, which with a flat side surface 4th rest on each other and from a common protective cover 2 are enclosed. With this configuration there is at least between the two tendons 1 a thin dashed line, intermediate layer 3 of fat or or and a thin Plastic film available. Of course, as with the 1, also the individual clamping elements 1 enclosed by a layer of fat and / or plastic film his.
  • the embodiment of the tendon according to FIG. 3 differs from the embodiment of FIG. 2 by a double the number of clamping elements.
  • this case also lie four tendons of the embodiment of FIG. 1 with one flat side surface 4 on top of each other and can be used as an intermediate layer a thin layer of fat and / or a thin plastic film exhibit.
  • the individual Tendons 1 each of a thin layer of fat or plastic film be enclosed.
  • the row of tendons from a common plastic sheath 2 'enclosed, being between the tendons and the plastic jacket 2 'or protective cover a dashed line Intermediate layer 3 made of fat, a thin plastic film or the like. can be provided.
  • FIG. 6 shows a tendon with four tendons according to FIG. 4 in a square configuration, the entirety of the tendons, similar to the embodiment according to 3, is enclosed by a common protective cover 2 'and an intermediate layer 3 can have made of fat or thin plastic film.
  • Embodiment of the tendon according to FIG. 6 sixteen tendons according to FIG. 4 in square Configuration available and from a common protective cover 2 'or jacket, e.g. made of plastic, if necessary with the interposition of the described, indicated by dashed lines Enclosed intermediate layer 3.
  • Both the individual tendons 1 'and their Clamping elements 1 have a square shape and each touch individually as well also in rows along a side surface.
  • the rectangular or square shape is to be understood in the broadest sense, i.e. it can also be provided with rounded corners.
  • Rows of clamping elements 1, e.g. according to the embodiment of the clamping elements 4, 5, 6 and 7, is required within the scope of the invention that inside the tendon no noteworthy cavities or no to be filled or the clamping force or Cavities reducing the load capacity of the clamping element arise or are present.
  • the tendons 1 or the tensioning elements in any configuration be carried out. With each configuration of the tendons it is possible to switch between the individual Tendons or tendons a thin layer of fat and / or film, preferably made of plastic.
  • the protective cover 2 or 2 'or the jacket can be made of any material and in any Manner, e.g. be applied in the extrusion process or from two shells 2A, 2B exist, which after inserting the tendons or the tensioning elements along the contact points can be connected by a weld 5 or 6 or glue. Furthermore, there is also the possibility of producing the protective cover 2 or the jacket such that a Cut open plastic tube and after inserting the tendon or tendons in the Area of the parting line is welded to a closed jacket. Finally, can a seam connection may also be provided.
  • the pre-stressed clamping elements are anchored in an anchor body or anchor head 8 which, like FIGS. 8 and 9 show with frustoconical or truncated pyramid holes 9 is provided.
  • the size and shape of these holes is chosen that individual tendons or groups of the same after prestressing in the holes 9 by means of anchoring wedges or clamps 7 can be anchored.
  • 9 was used as an exemplary embodiment assumed that a tendon according to FIG. 4 is prestressed and in a hole 9 of the anchor head or anchor body 8 is anchored. For this purpose, four are in cross section in the embodiment according to FIG.
  • the blank can be removed from the the side facing away from the core 11 may be round or flat.
  • Such teething can also be caused by any other form of roughening, e.g. Pimples, be replaced. If the blank has a multiple length of the required wedge 7, the wedges are cut to length from the blank before or after application to the core 11.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Piles And Underground Anchors (AREA)

Description

Die Erfindung betrifft ein Spannglied nach dem Oberbegriff des Anspruches 1 zur Verwendung für Tragwerke im Bauwesen, insbesondere solche, bei denen verbundlose Vorspannung gefordert wird.The invention relates to a tendon according to the preamble of claim 1 for use in structures in construction, in particular those that require bondless pretensioning becomes.

Einen weiteren Gegenstand der Erfindung bildet die Verankerung des erfindungsgemäßen Spanngliedes in einem Ankerkörper.Anchoring is another object of the invention of the tendon according to the invention in an anchor body.

Schließlich ist auch ein Verfahren zur Herstellung der Verankerung Gegenstand der Erfindung.Finally, there is also a method of making the anchor Subject of the invention.

Durch die FR 2 675 523 A und US 3 500 625 A sind Spannkabel, bestehend aus sechseckig geformten Litzen bekannt geworden. Bei solchen Spannkabeln, welche durch eine Kunststoffummantelung umschlossen sind, besteht die Gefahr, dass die Ummantelung durch die Vielzahl der umfangseitigen Kanten der Litzen verletzt wird, wodurch in der Ummantelung Risse entstehen, die Feuchtigkeit zu den Litzen eindringen lassen und an diesen Korrosionsschäden bewirken.FR 2 675 523 A and US 3 500 625 A are tension cables, consisting of hexagonal shaped strands became known. at such tension cables, which were enclosed by a plastic sheath there is a risk that the sheathing through the plurality of peripheral edges of the strands is damaged, which causes cracks in the casing, the moisture to allow the strands to penetrate and cause corrosion damage.

Durch die DE 26 33 821 A sind Spannstähle der eingangs erwähnten Art bekannt geworden, die seitlich abgerundet und mit rippenartiger, schräg zur Stranglängsachse verlaufender Oberflächenprofilierung versehen sind. Für solche Spannstähle und ihre Verankerungskeile sind verhältnismäßig aufwendige Werkzeuge erforderlich, wobei die aufgrund von in einem Spannelement auftretenden Querdrücken auf benachbarte Elemente ausgeübten Querpressungen verhältnismäßig hoch sind.DE 26 33 821 A prestressing steels are those mentioned at the beginning Kind known that is rounded on the side and with rib-like surface profiling that runs obliquely to the longitudinal axis of the strand are provided. For such prestressing steels and their Anchoring wedges require relatively complex tools, the occurring due to in a clamping element Cross pressing on neighboring elements are relatively high.

Es ist daher Aufgabe der Erfindung, Maßnahmen zu schaffen, durch welche diese Querpressungen möglichst klein gehalten werden und ein Spannglied geschaffen wird, welches bei einem geringstmöglichen Querschnitt eine sehr hohe Tragkraft entwickelt. Diese Aufgabe wird bei einem Spannglied gemäß dem Oberbegriff des Patentanspruches 1 durch die Maßnahme nach dem kennzeichnenden Teil desselben gelöst. Durch die quadratische bzw. rechteckige Form der Drähte mit allseits ebenen Flächen ist die kompaktest denkbare Form des Zuggliedes möglich. Solche Spannglieder haben außerdem den Vorteil, dass bei gleichem Umfang ein größerer Querschnitt des Spanngliedes zur Verfügung steht, wodurch höhere Vorspannkräfte als bei den bekannten Ausführungsformen der Spannkabel erzielbar sind. Durch die ebenen Außenflächen werden die Querdrücke der Spannglieder, insbesondere bei bandförmigen Spanngliedern,über Flächen übertragen, so dass die Querpressungen auf den Kunststoffumhüllungen sehr klein werden in Vergleich zu jenen bei Litzen, die über Linien ihre Querdrücke eintragen und zu Verformungen der Kunststoffhüllen führen. Dadurch wird es auch möglich, die Dicke der Kunststoffhülle kleiner zu gestalten, da die Kunststoffhüllen durch die Querbeanspruchung aus den Querdrücken nicht verformt werden. Schließlich ergibt sich der Vorteil, dass mit solchen Spanngliedern die Verankerungskeile kleiner gestaltet werden können und die Gesamtabmessungen der Ankerkörper um etwa 20 bis 30 % gegenüber Verankerungen von Litzen verkleinert werden können.It is therefore an object of the invention to provide measures through which these transverse pressures are kept as small as possible and a tendon is created which is as low as possible Cross-section developed a very high load capacity. This Task is in a tendon according to the preamble of the claim 1 by the measure according to the characterizing part solved the same. Due to the square or rectangular shape the wire with flat surfaces on all sides is the most compact possible Form of the tension member possible. Such tendons also have the advantage of a larger cross-section for the same size of the tendon is available, which means higher prestressing forces than in the known embodiments of the tensioning cable are achievable. Due to the flat outer surfaces Cross pressures of the tendons, especially in the case of band-shaped tendons, over Transfer areas so that the cross pressures on the plastic wrappings become very small compared to those for strands that enter their transverse pressures over lines and cause deformation of the plastic sleeves. This also makes it possible to make the thickness of the plastic sleeve smaller, since the Plastic sleeves due to the transverse stress from the transverse pressures not be deformed. Finally, there is the advantage that with such tendons the anchoring wedges made smaller can and the overall dimensions of the anchor body by about 20 to 30% less than anchorage of strands can.

Ein weiterer Vorteil des erfindungsgemäßen Spannelementes besteht auch in einer wesentlichen Einsparung der Anschaffungsund Herstellungskosten, da das bei Litzen erforderliche Verseilen der Drähte im Stahlwerk entfällt und außerdem die kompakteste Form des Spanngliedes vorliegt, da zwischen den einzelnen Spannelementen keine Hohlräume sind.Another advantage of the tensioning element according to the invention there is also a substantial saving in purchasing and Manufacturing costs, since the stranding required for strands the wires in the steel mill are omitted and also the most compact Shape of the tendon exists because between the individual tendons are not cavities.

Für die Herstellung eines Spannbandes ist die Maßnahme nach Anspruch 2 von besonderem Vorteil.The measure is the same for the production of a strap Claim 2 of particular advantage.

Bei einem solchen Spannelement, welches durch eine gemeinsame, äußere Schutzhülle, vorzugsweise aus Kunststoff od.dgl., zusammengefasst bzw. umschlossen ist, erfolgt die Eintragung der Querkräfte über die volle Fläche der Spannelemente und nicht, wie es bei Litzen der Fall ist, über eine Linie:With such a tensioning element, which by a common, outer protective cover, preferably made of plastic or the like, is summarized or enclosed, the entry of the Lateral forces over the full area of the clamping elements and not how it is the case with strands, over a line:

Die einzelnen Spannelemente sind mit Fett und/oder einer Kunststofffolie umhüllt.The individual clamping elements are with grease and / or one Plastic film wrapped.

Die GB 885 265 A offenbart das Einspannen eines einzigen sechseckigen Spanngliedes in einen Ankerkopf durch Verankerungskeile, welche an ihrer dem Spannglied zugekehrten Oberfläche ebenflächig und an ihrer der Innenwand der Löcher der Ankerkörper kegelsegmentförmig ausgeführt sind. In dieser Form ist es nicht möglich, mehrere Spannglieder mit rechteckigem oder quadratischem Querschnitt der Spannelemente gemeinsam einzuspannen.GB 885 265 A discloses clamping a single one hexagonal tendon in an anchor head by anchoring wedges, which on their surface facing the tendon even and on the inner wall of the holes of the anchor body are designed in the shape of a cone segment. It is not in this form possible to use several tendons with rectangular or square Clamp the cross-section of the clamping elements together.

Durch die Maßnahme nach Anspruch 3 erfolgt eine einfache zeit- und kostensparende Verankerung des Spanngliedes der erfindungsgemäßen Bauart in einem Verankerungskörper.The measure according to claim 3 is simple time and cost-saving anchoring of the tendon of the invention Design in an anchoring body.

Wohl zeigt die DE 25 15 423 A eine Verankerung zweier nebeneinander liegender Spannglieder, doch sind in diesem Falle die verankerungsglieder als Stränge ausgebildet, bei welchen in einem Kunststoffkörper eine Vielzahl parallel zueinander liegender Drähte eingebettet ist. Bei einem derartigen Spannglied sind für hohe Tragkräfte große Querschnitte des Spanngliedes erforderlich, was durch die erfindungsgemäße Maßnahme nach Anspruch 4 verhindert wird.DE 25 15 423 A shows anchoring two side by side horizontal tendons, but in this case they are anchoring members formed as strands, in which in one Plastic body a variety of parallel Wires is embedded. In such a tendon are for high load capacities large cross sections of the tendon required, which prevented by the measure according to the invention according to claim 4 becomes.

Durch die Maßnahmen nach den Ansprüchen 4 und 5 kann eine einfache und kostensparende Herstellung des Verankerungskeiles erzielt werden.Through the measures according to claims 4 and 5, a simple and cost-saving manufacture of the anchoring wedge be achieved.

Die Erfindung wird anhand der Zeichnungen näher erläutert, in welchen Ausführungsbeispiele des erfindungsgemäßen Spanngliedes und Ausführungsbeispiele des erfindungsgemäßen Verankerungskörpers dargestellt sind.The invention is explained in more detail with reference to the drawings, in which embodiments of the tendon according to the invention and embodiments of the anchoring body according to the invention are shown.

Es zeigen:

  • Fig. 1 die einfachste Form eines Spanngliedes mit einem einzigen Spannelement im Querschnitt,
  • Fig. 2 den Querschnitt eines Spannbandes mit zwei Spannelementen,
  • Fig. 3 den Querschnitt eines Spannbandes mit vier Spannelementen,
  • Fig. 4 eine ähnliche Form wie Fig. 3 in einer anderen Variante,
  • Fig. 5 eine weitere Ausführungsform eines Spanngliedes mit neun in einem Quadrat angeordneten Spanngliedern,
  • Fig. 6 eine Ausführungsform eines Spannelementes mit vier in quadratischer Konfiguration angeordneten Spanngliedern nach Fig. 5 im Querschnitt,
  • Fig. 7 eine Variante mit sechzehn Spanngliedern der Ausführungsform nach Fig. 1 in quadratischer Konfiguration im Querschnitt,
  • Fig. 8 einen Querschnitt eines Ankerkörpers,
  • Fig. 9 eine Variante einer Draufsicht desselben, und
  • die Fig. 10 und 11 in schematischer Darstellung ein Verfahren zur Herstellung der Verankerungskeile bzw. -klemmen.
    • Show it:
  • 1 the simplest form of a tendon with a single clamping element in cross section,
  • 2 shows the cross section of a tensioning band with two tensioning elements,
  • 3 shows the cross section of a tensioning band with four tensioning elements,
  • 4 shows a form similar to FIG. 3 in another variant,
  • 5 shows a further embodiment of a tendon with nine tendons arranged in a square,
  • 6 shows an embodiment of a tensioning element with four tensioning elements according to FIG. 5 arranged in a square configuration in cross section,
  • 7 shows a variant with sixteen tendons of the embodiment according to FIG. 1 in a square configuration in cross section,
  • 8 shows a cross section of an anchor body,
  • Fig. 9 shows a variant of a top view of the same, and
  • 10 and 11 in schematic representation a method for producing the anchoring wedges or clamps.

    • Bei der Ausführungsform des Spanngliedes nach Fig. 1 ist ein einziges Spannelement 1 mit rechteckigem Querschnitt vorgesehen, welches von einer Schutzhülle 2 umschlossen ist, die vorzugsweise aus Kunststoff besteht. Zwischen Spannglied 1 und Schutzhülle 2 kann, wie strichliert angedeutet ist, eine sehr dünne Zwischenschicht 3 aus Fett oder bzw. und Kunststofffolie vorhanden sein.In the embodiment of the tendon according to Fig. 1 is a only clamping element 1 with a rectangular cross section is provided, which is enclosed by a protective cover 2, which is preferably consists of plastic. Between tendon 1 and protective cover 2 can, as indicated by dashed lines, a very thin intermediate layer 3 be made of fat or and and plastic film.

    Bei der Ausführungsform eines Spanngliedes nach Fig. 2 in Form eines Spannbandes sind zwei Spannelemente 1 von rechteckigem Querschnitt vorgesehen, welche mit einer ebenen Seitenfläche 4 aufeinander aufliegen und von einer gemeinsamen Schutzhülle 2 umschlossen sind. Bei dieser Konfiguration ist mindestens zwischen den beiden Spanngliedern 1 eine dünne, strichliert angedeutete, zwischenschicht 3 aus Fett oder bzw. und eine dünne Kunststofffolie vorhanden. Selbstverständlich können, wie bei der Ausführungsform nach Fig. 1, auch die einzelnen Spannelemente 1 von einer Fettschicht und bzw. oder Kunststofffolie umschlossen sein.In the embodiment of a tendon according to FIG. 2 in The shape of a strap is two clamping elements 1 of rectangular Cross section provided, which with a flat side surface 4th rest on each other and from a common protective cover 2 are enclosed. With this configuration there is at least between the two tendons 1 a thin dashed line, intermediate layer 3 of fat or or and a thin Plastic film available. Of course, as with the 1, also the individual clamping elements 1 enclosed by a layer of fat and / or plastic film his.

    Die Ausführungsform des Spanngliedes nach Fig. 3 unterscheidet sich von der Ausführungsform nach Fig. 2 durch eine doppelte Anzahl von Spannelementen. In diesem Falle liegen außerdem vier Spannglieder der Ausführungsform nach Fig. 1 mit einer ebenen Seitenfläche 4 aufeinander und können als Zwischenschicht eine dünne Fettschicht und bzw. oder eine dünne Kunststofffolie aufweisen. Auch in diesem Falle können die einzelnen Spannglieder 1 jeweils von einer dünnen Fettschicht oder Kunststofffolie umschlossen sein. Bei diesem Ausführungsbeispiel ist die Reihe der Spannglieder von einem gemeinsamen Kunststoffmantel 2' umschlossen, wobei zwischen den Spanngliedern und dem Kunststoffmantel 2' bzw. Schutzhülle eine strichliert angedeutete Zwischenschicht 3 aus Fett, einer dünnen Kunststofffolie od. dgl. vorgesehen sein kann.The embodiment of the tendon according to FIG. 3 differs differs from the embodiment of FIG. 2 by a double the number of clamping elements. In this case also lie four tendons of the embodiment of FIG. 1 with one flat side surface 4 on top of each other and can be used as an intermediate layer a thin layer of fat and / or a thin plastic film exhibit. In this case too, the individual Tendons 1 each of a thin layer of fat or plastic film be enclosed. In this embodiment the row of tendons from a common plastic sheath 2 'enclosed, being between the tendons and the plastic jacket 2 'or protective cover a dashed line Intermediate layer 3 made of fat, a thin plastic film or the like. can be provided.

    Bei der Ausführungsform des Spannelementes nach Fig. 4 sind vier Spannelemente 1 und bei der Ausführungsform des Spanngliedes nach Fig. 5 sind neun Spannelemente 1 in quadratischer Konfiguration vorhanden.4 are in the embodiment of the tensioning element four clamping elements 1 and in the embodiment of the tendon 5 are nine clamping elements 1 in a square configuration available.

    Fig. 6 zeigt ein Spannglied mit vier Spanngliedern nach Fig. 4 in quadratischer Konfiguration, wobei die Gesamtheit der Spannglieder, ähnlich wie bei der Ausführungsform nach Fig. 3, von einer gemeinsamen Schutzhülle 2' umschlossen ist und eine Zwischenschicht 3 aus Fett oder dünner Kunststoffolie aufweisen kann.6 shows a tendon with four tendons according to FIG. 4 in a square configuration, the entirety of the tendons, similar to the embodiment according to 3, is enclosed by a common protective cover 2 'and an intermediate layer 3 can have made of fat or thin plastic film.

    Bei der Ausführungsform des Spanngliedes nach Fig. 7 sind zum Unterschied von der Ausführungsform des Spanngliedes nach Fig. 6 sechzehn Spannglieder nach Fig. 4 in quadratischer Konfiguration vorhanden und von einer gemeinsamen Schutzhülle 2' bzw. Mantel, z.B. aus Kunststoff, allenfalls unter Zwischenschaltung der beschriebenen, strichliert angedeuteten Zwischenschicht 3 umschlossen. Sowohl die einzelnen Spannglieder 1' als auch deren Spannelemente 1 haben quadratische Form und berühren sich jeweils sowohl einzeln als auch reihenweise entlang einer Seitenfläche.7 are different from that Embodiment of the tendon according to FIG. 6 sixteen tendons according to FIG. 4 in square Configuration available and from a common protective cover 2 'or jacket, e.g. made of plastic, if necessary with the interposition of the described, indicated by dashed lines Enclosed intermediate layer 3. Both the individual tendons 1 'and their Clamping elements 1 have a square shape and each touch individually as well also in rows along a side surface.

    Die rechteckige oder quadratische Form ist im weitesten Sinne zu verstehen, d.h. sie kann auch mit abgerundeten Ecken versehen sein. Bei mehreren übereinanderliegenden Reihen von Spannelementen 1, z.B. gemäß der Ausführungsform der Spannelemente nach den Fig. 4, 5, 6 und 7, ist im Rahmen der Erfindung erforderlich, daß im Inneren des Spanngliedes keine nennenswerten Hohlräume bzw. keine auszufüllenden bzw. die Spannkraft bzw. Tragkraft des Spannelementes vermindernden Hohlräume entstehen bzw. vorhanden sind. Selbstverständlich können die Spannglieder 1 bzw. die Spannelemente in beliebiger Konfiguration ausgeführt werden. Bei jeder Konfiguration der Spannglieder kann zwischen den einzelnen Spanngliedern bzw. Spannelementen eine dünne Fettschicht und bzw. oder Folie, vorzugsweise aus Kunststoff, vorhanden sein.The rectangular or square shape is to be understood in the broadest sense, i.e. it can also be provided with rounded corners. With several superimposed Rows of clamping elements 1, e.g. according to the embodiment of the clamping elements 4, 5, 6 and 7, is required within the scope of the invention that inside the tendon no noteworthy cavities or no to be filled or the clamping force or Cavities reducing the load capacity of the clamping element arise or are present. Of course, the tendons 1 or the tensioning elements in any configuration be carried out. With each configuration of the tendons it is possible to switch between the individual Tendons or tendons a thin layer of fat and / or film, preferably made of plastic.

    Selbstverständlich können im Rahmen der Erfindung verschiedene konstruktive Abänderungen vorgenommen werden. So können die Ecken der Spannelemente 1 abgerundet, abgeschrägt, abgekantet oder in ähnlicher Form ausgebildet sein.Of course, various design modifications can be made within the scope of the invention be made. So the corners of the clamping elements 1 can be rounded, beveled, chamfered or formed in a similar form.

    Schließlich besteht die Möglichkeit, zwischen dem Spannglied und der Ummantelung 2, wie in der linken Hälfte der Ausführungsform des Spanngliedes nach Fig. 7 dargestellt ist, einen Zwischenraum 10, einen sogenannten Gleitspalt, vorzusehen, wodurch es möglich ist, in der Ummantelung, Schutzhülle od. dgl. 2 das Spannglied verschieben zu können.Finally, there is a possibility between the tendon and the sheathing 2, as shown in the left half of the embodiment of the tendon according to FIG. 7, to provide a space 10, a so-called sliding gap, which makes it possible to in the casing, protective cover or the like. 2 to be able to move the tendon.

    Die Schutzhülle 2 bzw. 2' bzw. der Mantel kann aus beliebigem Material und in beliebiger Weise, z.B. im Extrusionsverfahren aufgebracht werden oder aus zwei Schalen 2A, 2B bestehen, welche nach Einsetzen der Spannglieder oder der Spannelemente entlang der Berührungsstellen durch eine Schweißnaht 5 bzw. 6 oder Klebung verbunden werden. Weiters besteht auch die Möglichkeit, die Schutzhülle 2 bzw. den Mantel so herzustellen, dass ein Kunststoffrohr aufgeschnitten und nach Einsetzen des Spanngliedes bzw. der Spannglieder im Bereich der Trennfuge zu einem geschlossenen Mantel verschweißt wird. Schließlich kann auch eine Falzverbindung vorgesehen sein. The protective cover 2 or 2 'or the jacket can be made of any material and in any Manner, e.g. be applied in the extrusion process or from two shells 2A, 2B exist, which after inserting the tendons or the tensioning elements along the contact points can be connected by a weld 5 or 6 or glue. Furthermore, there is also the possibility of producing the protective cover 2 or the jacket such that a Cut open plastic tube and after inserting the tendon or tendons in the Area of the parting line is welded to a closed jacket. Finally, can a seam connection may also be provided.

    Die Verankerung der vorgespannten Spannelemente erfolgt in einem Ankerkörper bzw. Ankerkopf 8, der, wie die Fig. 8 und 9 zeigen, mit kegelstumpf- oder pyramidenstumpfförmigen Löchern 9 versehen ist. Die Größe und Form dieser Löcher ist so gewählt, dass einzelne Spannglieder oder Gruppen derselben nach dem Vorspannen in den Löchern 9 durch Verankerungskeile bzw. -klemmen 7 verankert werden können. Als Ausführungsbeispiel wurde in Fig. 9 angenommen, dass ein Spannglied nach Fig. 4 vorgespannt und in einem Loch 9 des Ankerkopfes bzw. Ankerkörpers 8 verankert wird. Hiezu sind bei der Ausführungsform nach Fig. 9 vier im Querschnitt ringsektorförmige Verankerungskeile 7 vorgesehen, die an ihrer dem Spannglied zugekehrten Oberfläche ebenflächig und mit einer Verzahnung versehen sind, während die Außenfläche der Verankerungskeile 7 der Innenwand der Löcher 9 entsprechend kegelsegmentförmig ausgeführt sind. Selbstverständlich besteht die Möglichkeit, die Anzahl und Form der Verankerungskeile beliebig auszuführen, sofern die jeweiligen Verankerungskeile flächenkonform mit der Wand der Löcher 9 und der Außenwand der Spannglieder 1 ausgeführt sind. Außerdem ist wesentlich, dass mindestens zwei, einander gegenüberliegende Verankerungskeile vorgesehen sind.The pre-stressed clamping elements are anchored in an anchor body or anchor head 8 which, like FIGS. 8 and 9 show with frustoconical or truncated pyramid holes 9 is provided. The size and shape of these holes is chosen that individual tendons or groups of the same after prestressing in the holes 9 by means of anchoring wedges or clamps 7 can be anchored. 9 was used as an exemplary embodiment assumed that a tendon according to FIG. 4 is prestressed and in a hole 9 of the anchor head or anchor body 8 is anchored. For this purpose, four are in cross section in the embodiment according to FIG. 9 ring sector-shaped anchoring wedges 7 are provided, which their surface facing the tendon evenly and with are provided with a toothing, while the outer surface of the anchoring wedges 7 of the inner wall of the holes 9 corresponding to the shape of a cone segment are executed. Of course there is Possibility to choose the number and shape of the anchoring wedges if the respective anchoring wedges conform to the surface with the wall of holes 9 and the outer wall of the tendons 1 are executed. It is also essential that at least two, opposing anchoring wedges are provided.

    Die Herstellung der ringsektorförmigen Verankerungskeile nach Fig. 9 kann, wie die Fig. 10 und 11 zeigen, in der Weise erfolgen, dass für jeden ringsektorförmigen Verankerungskeil 7 ein im Längsquerschnitt rechteckiger Rohling 7' nach Fig. 11 verwendet wird, wobei vier solche Rohlinge 7' um einen Kern 11, wie Fig. 10 zeigt, aufgespannt werden, undgemeinsam, z.B. in einem Keildrehautomaten bzw. einer Drehmaschine, in eine konische Form gebracht werden, wobei der in Fig. 11 strichliert eingezeichnete Teil 7" abgetragen wird. Hiebei kann der Rohling an der dem Kern 11 abgekehrten Seite rund oder flach sein. Sodann werden die Keile 7 vom Kern 11 abgenommen und die Zahnungen 12 zum Festhalten des Spanngliedes im Loch 9 des Ankerkopfes bzw. Ankerkörpers 8 mit einer Prägewalze 13 hergestellt. Solche Zahnungen können auch durch jede andere Form von Rauungen, z.B. Noppen, ersetzt sein. Falls der Rohling eine mehrfache Länge des benötigten Keiles 7 hat, werden die Keile vor oder nach dem Aufbringen auf den Kern 11 vom Rohling abgelängt.The production of ring-shaped anchoring wedges 9, as shown in FIGS. 10 and 11, in the manner take place that for each ring sector-shaped anchoring wedge 7 a blank 7 'rectangular in longitudinal cross section according to FIG. 11 is used, four such blanks 7 'around a core 11, as shown in Figure 10, and together, e.g. in one Wedge lathes or a lathe, in a conical Form are brought, the one shown in dashed lines in Fig. 11 Part 7 ". The blank can be removed from the the side facing away from the core 11 may be round or flat. Then be the wedges 7 removed from the core 11 and the serrations 12 for holding of the tendon in hole 9 of the anchor head or anchor body 8 produced with an embossing roller 13. Such teething can also be caused by any other form of roughening, e.g. Pimples, be replaced. If the blank has a multiple length of the required wedge 7, the wedges are cut to length from the blank before or after application to the core 11.

    Claims (5)

    1. A tendon member of approximately rectangular cross-section, comprising at least one tendon element enclosed by a protective sheath, characterised in that the tendon element (1) has a rectangular or square cross-section with surfaces plane on all sides.
    2. A tendon member according to claim 1, characterised in that a plurality of tendon elements (1) is provided resting on one another with a plane surface, the tendon elements (1) being enclosed by a common, optionally multi-part protective jacket or protective sheath (2), respectively, with a foil (3), preferably of plastics, or a grease layer, being interposed.
    3. Anchoring of a pre-stressed tendon element according to claim 2 in an anchoring body with a frustoconical hole by means of ring-sector-shaped anchoring wedges embracing the tendon member in the anchoring body and having a plane, toothed surface facing the tendon element and having an cone-segment-shaped external surface corresponding to the inner wall of the hole (9) of the anchoring body (8), characterised in that four anchoring wedges (7) are provided anchoring two neighbouring tendon elements (1) each of the four tendon elements that form a tendon member of rectangular cross-section.
    4. A method of producing an anchoring according to claim 3, characterised in that blanks (7') are braced together about a core (11) and the surface of the ring thus braced together is turned on a lathe externally to a frustoconical shape, uneven spots, or a corrugation or toothing, respectively, being imprinted before or after the bracing to the core (11) on the side of the blanks which is to face the tendon member.
    5. A method according to claim 4, characterised in that the blanks have ring-sector-shape with a plane surface to face the tendon member.
    EP00958034A 1999-09-07 2000-08-30 Tensioning mechanism, anchoring of said tensioning mechanism and method for producing said anchoring Expired - Lifetime EP1210478B1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    AT00958034T ATE271150T1 (en) 1999-09-07 2000-08-30 TENSIONING ELEMENT, ANCHORING OF THE TENSILE AND METHOD FOR PRODUCING THE ANCHORAGE

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    AT153699 1999-09-07
    AT153699 1999-09-07
    PCT/AT2000/000232 WO2001018306A2 (en) 1999-09-07 2000-08-30 Tensioning mechanism, anchoring wedge for anchoring said tensioning mechanism and method for producing said anchoring wedge

    Publications (2)

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    EP1210478A2 EP1210478A2 (en) 2002-06-05
    EP1210478B1 true EP1210478B1 (en) 2004-07-14

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    EP00958034A Expired - Lifetime EP1210478B1 (en) 1999-09-07 2000-08-30 Tensioning mechanism, anchoring of said tensioning mechanism and method for producing said anchoring

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    EP (1) EP1210478B1 (en)
    AU (1) AU6972500A (en)
    DE (1) DE50007086D1 (en)
    WO (1) WO2001018306A2 (en)

    Families Citing this family (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    AT410337B (en) * 2000-06-15 2003-03-25 Thal Hermann Dipl Ing ENTRY OF PRELOADING ELEMENTS
    CN104452373A (en) * 2014-11-26 2015-03-25 胡国良 Drag rope and method for manufacturing drag rope

    Family Cites Families (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB885265A (en) * 1960-08-25 1961-12-20 Mccalls Macalloy Ltd Wedge anchors for gripping prestressing tendons
    AT328156B (en) * 1974-04-26 1976-03-10 Felten & Guilleaume Ag Oester ANCHORING DEVICE FOR CONNECTED RODS MADE OF A PLASTIC BODY AND IN PARTICULAR PARALLEL WIRES EMBEDDED IN THESE
    DE2633821C2 (en) * 1976-07-28 1982-11-25 Philipp Holzmann Ag, 6000 Frankfurt Prestressing steel for prestressed concrete components
    AT400736B (en) * 1991-03-19 1996-03-25 Vorspann Technik Gmbh TENSION BUNDLE FOR PRELOADED CONCRETE STRUCTURES
    FR2675523A1 (en) * 1991-04-22 1992-10-23 Scetauroute Stay cable, in particular for cable-stayed bridge, consisting of a bundle of identical strands each formed by several wires (filaments)

    Also Published As

    Publication number Publication date
    WO2001018306A2 (en) 2001-03-15
    WO2001018306A3 (en) 2001-09-13
    EP1210478A2 (en) 2002-06-05
    DE50007086D1 (en) 2004-08-19
    AU6972500A (en) 2001-04-10

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