EP0898629A1 - Bundled prestress tendon and method for producing same - Google Patents

Bundled prestress tendon and method for producing same

Info

Publication number
EP0898629A1
EP0898629A1 EP98900238A EP98900238A EP0898629A1 EP 0898629 A1 EP0898629 A1 EP 0898629A1 EP 98900238 A EP98900238 A EP 98900238A EP 98900238 A EP98900238 A EP 98900238A EP 0898629 A1 EP0898629 A1 EP 0898629A1
Authority
EP
European Patent Office
Prior art keywords
tendon
bundled
points
adhesive
point
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98900238A
Other languages
German (de)
French (fr)
Other versions
EP0898629B1 (en
Inventor
Hermann Dipl.-Ing. Thal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thal Hermann
Original Assignee
Thal Hermann Dipl-Ing
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thal Hermann Dipl-Ing filed Critical Thal Hermann Dipl-Ing
Priority to DE29824276U priority Critical patent/DE29824276U1/en
Publication of EP0898629A1 publication Critical patent/EP0898629A1/en
Application granted granted Critical
Publication of EP0898629B1 publication Critical patent/EP0898629B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/162—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
    • 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
    • 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
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2015—Construction industries
    • D07B2501/2023—Concrete enforcements

Definitions

  • the invention relates to a bundled tendon consisting of a plurality of plastic-coated tendons, preferably running parallel to one another.
  • the tendons mentioned are particularly intended for prestressing concrete in prestressed concrete structures. However, they can also be used for other purposes.
  • Another object of the invention relates to a method for producing the bundled tendon.
  • the object of the invention is to produce a bundled tendon in which the tensioning elements are connected to one another in a simple manner and with little work.
  • the object is achieved in that the clamping elements of the tendon are glued or welded at least at longitudinal intervals at the point of contact of the casing by the action of heat.
  • the plastic sheathing is softened by electrical resistance heating in a continuous process and subjected to pressure. Further details of the invention will be explained in more detail with reference to the drawing, in which three exemplary embodiments of the bundled tendon according to the invention are shown.
  • FIG. 1 shows a cross section of a band-shaped bundled tendon, which consists of four adjacent plastic-coated strands,
  • Fig. 2 is a plan view of the bundled tendon of FIG. 1 and
  • strand 1 denotes a strand, which consists of a central wire 1 'and six wires 1 "surrounding it, wherein the wires 1 ⁇ 1" can be connected to form a braid.
  • the strand 1 is embedded in an anti-corrosion compound and encased in a plastic sheath 2.
  • several strands 1 can also be present in the sheathing 2, wires, rods or the like being used instead of strands. can kick.
  • the tensioning elements in the present case the sheathed strands 1, 2 are connected at a distance from one another by gluing points 3.
  • the distances B between the glue points 3 are greater than the respective lengths A of the glue points.
  • the distances B can also be smaller than the lengths A.
  • the adhesive points 3 can also extend over the entire length of the clamping elements.
  • a material is preferably used for the wrapping, which is adhesive at about 200 ° C. what HDPE (polyethylene) is suitable for.
  • the casing 2 is softened at intervals in the continuous process by electrical resistance heating and a connection is created by subsequent or simultaneous application of pressure, which results in the desired bonding in the course of the subsequent cooling.
  • the cooling can be done simply by the influence of the ambient air or by artificial cooling methods.
  • the configuration of the tensioning elements can be chosen arbitrarily, the gluing points 3 being produced at the tangential contact points of the adjacent tensioning elements by the described method. It is possible, as shown in FIG. 3, to group four clamping elements into a bundle in which the center points of the clamping elements are arranged in the corners of a square.

Abstract

The invention relates to a bundled prestress tendon comprising several, preferably parallel, prestress elements (1) surrounded by a plastic coating. The prestress elements (1) of the prestress tendon are glued or welded together by heat or pressure at least at longitudinal intervals (B) at the points of contact of the coating (2).

Description

Gebündeltes Spannglied und Verfahren zur Herstellung desselben Bundled tendon and method of making the same
Die Erfindung betrifft ein gebündeltes Spannglied, bestehend aus mehreren, vorzugsweise parallel zueinander verlaufenden kunststoffummantelten Spannelementen. Die genannten Spannglieder sind insbesondere zum Vorspannen von Beton bei Spannbetonkonstruktionen bestimmt. Sie können aber auch für andere Zwecke verwendet werden.The invention relates to a bundled tendon consisting of a plurality of plastic-coated tendons, preferably running parallel to one another. The tendons mentioned are particularly intended for prestressing concrete in prestressed concrete structures. However, they can also be used for other purposes.
Einen weiteren Gegenstand der Erfindung betrifft ein Verfahren zur Herstellung des gebündelten Spanngliedes.Another object of the invention relates to a method for producing the bundled tendon.
Durch die EP-AI 0393 013 ist es bekanntgeworden, mehrere kunststoffummantelte Litzen nebeneinander anzuordnen und mit einer gemeinsamen Kunststoffummantelung zu versehen, welche zwischen zwei benachbarten Litzen einen Steg bildet, durch welchen die benachbarten Litzen voneinander getrennt sind. Die Herstellung solcher Stege erfolgt in einem Extrusionsverfahren, für welches verhältnismäßig kostenaufwendige Extruder erforderlich sind.From EP-AI 0393 013 it has become known to arrange a plurality of plastic-coated strands next to one another and to provide them with a common plastic covering, which forms a web between two adjacent strands by which the adjacent strands are separated from one another. Such webs are produced in an extrusion process, for which relatively expensive extruders are required.
Es ist weiters bekannt, mehrere kunststoffummantelte Litzen mit Hilfe von Bändern. Klammern od.dgl. zu einem Bündel zusammenzufassen.It is also known to use plastic strips to bind several plastic-coated strands. Brackets or the like to form a bundle.
Aufgabe der Erfindung ist die Herstellung eines gebündelten Spanngliedes, bei welchem die Spannelemente untereinander in einfacher Weise und mit wenig Arbeitsaufwand verbunden sind.The object of the invention is to produce a bundled tendon in which the tensioning elements are connected to one another in a simple manner and with little work.
Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Spannelemente des Spanngliedes zumindest in Längsabständen an der Berührungsstelle der Ummantelung durch - Hitzeeinwirkung verklebt bzw. verschweißt sind.The object is achieved in that the clamping elements of the tendon are glued or welded at least at longitudinal intervals at the point of contact of the casing by the action of heat.
Zur Herstellung der Verklebung bzw. Schweißung wird gemäß der Erfindung die Kunststoffummantelung durch elektrische Widerstandsheizung im Durchlaufverfahren erweicht und einer Druckeinwirkung unterzogen. Weitere Einzelheiten der Erfindung werden anhand der Zeichnung näher erläutert, in welcher drei Ausführungsbeispiele des erfindungsgemäßen gebündelten Spanngliedes dargestellt sind.To produce the bond or weld, according to the invention, the plastic sheathing is softened by electrical resistance heating in a continuous process and subjected to pressure. Further details of the invention will be explained in more detail with reference to the drawing, in which three exemplary embodiments of the bundled tendon according to the invention are shown.
Es zeigenShow it
Fig. 1 einen Querschnitt eines bandförmigen gebündelten Spanngliedes, welches aus vier nebeneinanderliegenden kunststoffummantelten Litzen besteht,1 shows a cross section of a band-shaped bundled tendon, which consists of four adjacent plastic-coated strands,
Fig. 2 eine Draufsicht des gebündelten Spanngliedes nach Fig. 1 und dieFig. 2 is a plan view of the bundled tendon of FIG. 1 and
Fig. 3 und 4 zwei Konfigurationen des gebündelten Spanngliedes mit vier bzw. drei Spannelementen.3 and 4 two configurations of the bundled tendon with four or three clamping elements.
In Fig. 1 bezeichnet 1 eine Litze, welche aus einem mittigen Draht 1 ' und sechs diesen umschließenden Drähten 1 " besteht, wobei die Drähte 1 \ 1 " zu einem Zopf verbunden sein können. Die Litze 1 ist in einer Korrosionsschutzmasse eingebettet und von einer Kunststoffummantelung 2 umhüllt. Selbstverständlich können in der Ummantelung 2 auch mehrere Litzen 1 vorhanden sein, wobei anstelle von Litzen auch Drähte, Stangen od.dgl. treten können.In Fig. 1, 1 denotes a strand, which consists of a central wire 1 'and six wires 1 "surrounding it, wherein the wires 1 \ 1" can be connected to form a braid. The strand 1 is embedded in an anti-corrosion compound and encased in a plastic sheath 2. Of course, several strands 1 can also be present in the sheathing 2, wires, rods or the like being used instead of strands. can kick.
Wie Fig. 2 zeigt, sind die Spannelemente im vorliegenden Falle die ummantelten Litzen 1 , 2 in Abstand voneinander durch Klebestellen 3 verbunden. Im vorliegenden Falle sind die Abstände B der Klebestellen 3 größer als die jeweiligen Längen A der Klebestellen. Im Rahmen der Erfindung können die Abstände B auch kleiner als die Längen A sein. In Sonderfällen können sich die Klebestellen 3 auch über die gesamte Länge der Spannelemente erstrecken. Schließlich ist es auch denkbar, die Klebestellen nur punktweise in Abstand voneinander anzuordnen.As shown in FIG. 2, the tensioning elements in the present case the sheathed strands 1, 2 are connected at a distance from one another by gluing points 3. In the present case, the distances B between the glue points 3 are greater than the respective lengths A of the glue points. In the context of the invention, the distances B can also be smaller than the lengths A. In special cases, the adhesive points 3 can also extend over the entire length of the clamping elements. Finally, it is also conceivable to arrange the adhesive points only at points at a distance from one another.
- Für die Umhüllung wird vorzugsweise ein Material verwendet, welches bei etwa 200°C klebefähig ist. wofür sich HDPE (Polyethylen) eignet. Zur Herstellung der Klebestellen wird im Durchlaufverfahren durch elektrische Widerstandsheizung die Umhüllung 2 in Abständen erweicht und durch anschließende oder gleichzeitige Druckanwendung eine Verbindung geschaffen, welche im Zuge der darauffolgenden Abkühlung die gewünschte Klebung ergibt. Die Abkühlung kann einfach durch die Einwirkung der Umgebungsluft oder durch künstliche Kühlmethoden erfolgen.- A material is preferably used for the wrapping, which is adhesive at about 200 ° C. what HDPE (polyethylene) is suitable for. To produce the adhesive points, the casing 2 is softened at intervals in the continuous process by electrical resistance heating and a connection is created by subsequent or simultaneous application of pressure, which results in the desired bonding in the course of the subsequent cooling. The cooling can be done simply by the influence of the ambient air or by artificial cooling methods.
Die Konfiguration der Spannelemente kann beliebig gewählt sein, wobei die Klebestellen 3 an den Tangentialen Berührungsstellen der benachbarten Spannelemente durch das beschriebene Verfahren hergestellt werden. So besteht die Möglichkeit, wie Fig. 3 zeigt, vier Spannelemente zu einem Bündel zu gruppieren, bei dem die Mittelpunkte der Spannelemente in den Ecken eines Quadrates angeordnet sind.The configuration of the tensioning elements can be chosen arbitrarily, the gluing points 3 being produced at the tangential contact points of the adjacent tensioning elements by the described method. It is possible, as shown in FIG. 3, to group four clamping elements into a bundle in which the center points of the clamping elements are arranged in the corners of a square.
Bei der Konfiguration nach Fig. 4 sind drei Spannelemente vorgesehen, deren Mittelpunkte in den Ecken eines Dreieckes, im vorliegenden Falle eines gleichseitigen Dreieckes, angeordnet sind. Selbstverständlich können auch beliebig andere Konfigurationen verwendet werden. In the configuration according to FIG. 4, three clamping elements are provided, the center points of which are arranged in the corners of a triangle, in the present case an equilateral triangle. Of course, any other configuration can also be used.

Claims

Patentansprüche: Claims:
1. Gebündeltes Spannglied, bestehend aus mehreren, vorzugsweise parallel zueinander verlaufenden kunststoffummantelten Spannelementen, dadurch gekennzeichnet, daß die Spannelemente des Spanngliedes zumindest in Längsabständen an der Berührungsstelle der Ummantelung (2) durch Hitzeeinwirkung verklebt bzw. verschweißt sind.1. Bundled tendon, consisting of several, preferably parallel to each other plastic sheathed clamping elements, characterized in that the clamping elements of the tendon are glued or welded at least at longitudinal intervals at the point of contact of the casing (2) by the action of heat.
2. Spannglied nach Anspruch 1, dadurch gekennzeichnet, daß die Klebestellen (3) in Abständen (B) voneinander angeordnet sind, die gleich oder größer als die Breite (A) der Klebestellen (3) sind.2. Tensioning element according to claim 1, characterized in that the adhesive points (3) are arranged at intervals (B) from one another which are equal to or greater than the width (A) of the adhesive points (3).
3. Spannglied nach Anspruch 1, dadurch gekennzeichnet, daß die Klebestellen (3) punktweise angeordnet sind.3. Tendon according to claim 1, characterized in that the adhesive points (3) are arranged point by point.
4. Spannglied nach Anspruch 1, dadurch gekennzeichnet, daß sich die Klebestelle (3) über zumindest den größten Teil der Länge des Spanngliedes erstreckt.4. tendon according to claim 1, characterized in that the adhesive point (3) extends over at least the largest part of the length of the tendon.
5. Verfahren zur Herstellung der Verklebung bzw. Schweißung nach zumindest einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Kunststoffummantelung durch elektrische Widerstandsheizung im Durchlaufverfahren erweicht und einer5. A method for producing the adhesive bond or weld according to at least one of the preceding claims, characterized in that the plastic casing softens by electrical resistance heating in a continuous process and one
Druckeinwirkung unterzogen wird. Is subjected to pressure.
EP98900238A 1997-01-15 1998-01-13 Bundled prestress tendon and method for producing same Expired - Lifetime EP0898629B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29824276U DE29824276U1 (en) 1997-01-15 1998-01-13 Bundled tendon

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT56/97 1997-01-15
AT5697 1997-01-15
AT0005697A AT404477B (en) 1997-01-15 1997-01-15 BUNDLED TENSION AND METHOD FOR PRODUCING THE SAME
PCT/AT1998/000003 WO1998031892A1 (en) 1997-01-15 1998-01-13 Bundled prestress tendon and method for producing same

Publications (2)

Publication Number Publication Date
EP0898629A1 true EP0898629A1 (en) 1999-03-03
EP0898629B1 EP0898629B1 (en) 2003-04-09

Family

ID=3480370

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98900238A Expired - Lifetime EP0898629B1 (en) 1997-01-15 1998-01-13 Bundled prestress tendon and method for producing same

Country Status (5)

Country Link
EP (1) EP0898629B1 (en)
AT (2) AT404477B (en)
AU (1) AU5467998A (en)
DE (1) DE59807812D1 (en)
WO (1) WO1998031892A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6605599B1 (en) 1997-07-08 2003-08-12 Bristol-Myers Squibb Company Epothilone derivatives
EP0990744A1 (en) * 1998-10-02 2000-04-05 Hermann Dipl.-Ing. Thal Tendon
DE102006030069A1 (en) * 2006-06-28 2008-01-03 Kamphues, Andreas, Dipl.-Ing. Tensioning member especially for pre-stressed concrete structures, has individual tensioning members joined by plastic connecting element
WO2008138161A1 (en) * 2007-05-16 2008-11-20 Brugg Kabel Ag Method for the production of a flexible line
DE102008037541A1 (en) * 2008-04-10 2009-10-15 Contitech Antriebssysteme Gmbh traction means
US8677726B2 (en) 2008-11-14 2014-03-25 Otis Elevator Company Method of making an elevator belt
WO2010069837A1 (en) * 2008-12-18 2010-06-24 Nv Bekaert Sa A cord for reinforcement of a cementitious matrix
CN105019283A (en) * 2015-07-06 2015-11-04 江阴泰阳成索业有限公司 Method for manufacturing plastic-coated rope for vehicle brake assembly stay cable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059951A (en) * 1975-05-05 1977-11-29 Consolidated Products Corporation Composite strain member for use in electromechanical cable
EP0393013B2 (en) * 1989-04-12 1997-06-25 Vorspann-Technik Gesellschaft m.b.H. Tensioning-bundle comprising tensioning members

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9831892A1 *

Also Published As

Publication number Publication date
AT404477B (en) 1998-11-25
AU5467998A (en) 1998-08-07
ATA5697A (en) 1998-04-15
DE59807812D1 (en) 2003-05-15
WO1998031892A1 (en) 1998-07-23
EP0898629B1 (en) 2003-04-09
ATE237049T1 (en) 2003-04-15

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