EP1609912B1 - Building with a point of direction change for a corrosion protected tension member, in particular an inclined cable at the pylon of a cable-stayed bridge - Google Patents

Building with a point of direction change for a corrosion protected tension member, in particular an inclined cable at the pylon of a cable-stayed bridge Download PDF

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Publication number
EP1609912B1
EP1609912B1 EP05010924A EP05010924A EP1609912B1 EP 1609912 B1 EP1609912 B1 EP 1609912B1 EP 05010924 A EP05010924 A EP 05010924A EP 05010924 A EP05010924 A EP 05010924A EP 1609912 B1 EP1609912 B1 EP 1609912B1
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EP
European Patent Office
Prior art keywords
cable
bundle
pylon
tube
tension member
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EP05010924A
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German (de)
French (fr)
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EP1609912A1 (en
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Dywidag Systems International GmbH
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Dywidag Systems International GmbH
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Priority to PL05010924T priority Critical patent/PL1609912T3/en
Priority to SI200531203T priority patent/SI1609912T1/en
Publication of EP1609912A1 publication Critical patent/EP1609912A1/en
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Publication of EP1609912B1 publication Critical patent/EP1609912B1/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports

Definitions

  • the invention relates to a building with a deflection point for a corrosion-protected tension member, in particular for a stay cable on the pylon of a cable-stayed bridge.
  • a saddle-shaped curved channel is formed in a known solution in the pylon, in each of which a stay cable can be inserted ( DE 88 10 423 U ).
  • the channel consists in its lower part of a support tube forming a half pipe with a saddle bearing at the apex, where a bundle of individual tension elements in this area enclosing the seat tube can be locked against longitudinal displacements. This is done by a in the vertex of the deflection in the course of the support channel arranged bearing shell into which a bearing ring fits, which is attached to the seat tube.
  • the remaining cavities are pressed with a hardening material, for example cement mortar.
  • a hardening material for example cement mortar.
  • the tension elements ie, for example, the steel wire strands, can be roughened, preferably by sandblasting, at least in the apex region.
  • the seat tube outside of the pylon by means of flange rings directly with the casing of the bundle in the free area of the stay cable connected.
  • the result of this is that the channel formed in the pylon, which in order to allow replacement of the bundle with the seat tube, must have a relatively large cross-section, at least a greater height than the diameter of the bundle, at the frontal entry or exit points of the bundle Cable stayed is open.
  • This opening is disadvantageous because from there on environmental influences act, animals, especially birds, can penetrate, which can lead to contamination and corrosion phenomena.
  • the invention has the object to show a simple and economical, but above all, the static requirements account bearing possibility to close the openings of the guide channel for the stay cable in such a cable-stayed bridge.
  • the invention is based on the fact that the frontal openings of the guide channel to be closed by the fact that the tubing in the free area of the cable is directly or indirectly connected to the building, so the pylon.
  • the teaching according to the invention of continuing the circular arcuate saddle tube beyond the tangential outlet of the bundle so that the bundle is exposed without risking contact at the end of the saddle tube is a very simple way of ensuring that the bundle of strands does not suffer any misalignment Danger of a plant or even a kink at the end of the seat tube lifts.
  • Fig. 1 The invention is illustrated by the example of a bent in a pylon 2 made of reinforced concrete cable 1 in a vertical section.
  • the stay cable 1 consists of a bundle 3 of individual tension elements such as steel wires, rods or strands, which are arranged in their free area within a casing 4, for example a cladding tube made of PE.
  • the pylon 2 In the pylon 2 is formed by a recess tube 5 with an oval cross-section open at the ends, saddle-shaped with the radius R channel 6, in which the cable stay 1 can be inserted from the outside.
  • the bundle 3 itself is guided in the region of its passage through the pylon 2 in a likewise arcuately curved seat tube 7 made of steel, within which the individual tension elements of the bundle 3 are brought by Einpressmörtel 8 in conjunction with the seat tube 7.
  • a recessed saddle bearing 10 with a recess 11 into which a firmly connected to the saddle tube 7, for example by welding, 12 snaps.
  • This type of anchoring guaranteed at full interchangeability of the cable 1 reliable the prevention of longitudinal movements during the assembly of the cable and allows at the same time the recording of longitudinal forces occurring in the cable 1 differential forces.
  • This construction ensures that the entire stay cable 1 can be raised for replacement with the seat tube 7 until the projection 12 of the recess 11th comes free; the oval shape of the recess tube 5 leaves enough space upwards. Thereafter, the stay cable 1 with the seat tube 7 along the arcuate curvature of the deflection region according to the radius R can be pulled out of the channel 6.
  • connection of the casing 4 of the cable 1 to the building, namely the pylon 2, and the leadership of the seat tube 7 in this area can be based on the Fig. 2 to 4 be explained.
  • a connecting pipe 14 made of steel, which is releasably connected on the one hand to the casing 4 and on the other hand to the pylon 2.
  • a transition pipe 15 can be arranged between the casing 4 in the normal range and the connection pipe 14, which, like the casing 4, usually consists of plastic, in particular PE.
  • Fig. 2 as an enlarged view of the detail II Fig. 1 can recognize, carries the connecting pipe 14 at the building end a flange plate 16 which may be rectangular in outline ( Fig. 4 ).
  • the flange plate 16 is detachably connected by means of a screw 17 with the structure 2, for example against a cast-anchor plate 18.
  • the flange 16 also contributes to the transition from the oval cross-section of the recess tube 5 to the circular cross-section of the cable 1, here represented by the Cross section of the connecting pipe 14 and that of the seat tube 7th
  • connection pipe 14 at the casing end has an inner flange 19, against which an outer flange 20 of the transition pipe 15 rests from the outside.
  • the frictional connection between the transition tube 15 and the connecting pipe 14 is ensured by an axially parallel screw 21, which acts against a loose flange 22.
  • the screwing force acts on the - welded-PE flange 20 via a ring 23 made of elastic material, such as rubber or plastic, thereby avoiding restraining stresses from occurring angle errors become.
  • a softer load transfer of pipe vibrations is achieved on the screw 21.
  • Fig. 2 It can be seen how the individual elements of the bundle, which are blank in the region of the saddle tube 7, ie not enveloped, but in the free area of the stay cable 1.
  • the saddle tube 7 shown in FIG for protection against corrosion are individually wrapped, for example strands 24 with PE sheaths 25, from the circular guide with the radius R within the seat tube 7 tangentially into the straight guide in the free area of the cable 1.
  • This transition can be approximately with the exit of the cable 1 from the pylon 2 in the region of the section line IV-IV in Fig. 1 locate; he is in Fig. 2 marked by the arrow P.
  • the seat tube 7 is continued with its circular curvature along the radius R over a certain distance L beyond this point P, so as to ensure that the end 26 of the seat tube 7, in particular in its lower region in the radial direction sufficiently far from the bundle 3 is removed.
  • a pad member 27 made of an elastically and / or plastically deformable Material arranged at the end of the seat tube 7 on its inner wall a pad member 27 made of an elastically and / or plastically deformable Material arranged at the end of the seat tube 7 on its inner wall a pad member 27 made of an elastically and / or plastically deformable Material arranged at the end of the seat tube 7 on its inner wall a pad member 27 made of an elastically and / or plastically deformable Material arranged.
  • This upholstery element 27 may consist of a piece of pipe in the simplest case; but it can also, as in Fig. 2 shown, be a fitting whose inner contour is adapted to the course of the bundle 3 with rounded edges. Conveniently, this pad member 27 extends beyond the end 26 of the saddle tube 7, to ensure there in each case a soft support of the bundle 3.
  • a shuttering tube 28 is temporarily pushed over the end of the saddle tube 7, which is sealed relative to the seat tube 7 by a seal 29. After closing the front opening 30 of the formwork tube 28 may, as in Fig. 1 shown, the entire cavity are pressed out. On the representation of the compression was in Fig. 2 omitted for the sake of clarity. In order to prevent the mortar from spalling during movements, the insertion of wire mesh or similar is recommended as a reinforcement at the front end.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Ropes Or Cables (AREA)

Abstract

The brace (1) consists of a sheaf (3) of individual parts surrounded by a casing (4) and is located in a seat tube inside an arch-shaped channel (6) near the cable or guide part. The seat tube (7), likewise shaped into an arch, is led out of the tangential extrusion of the sheaf just far enough so that the sheaf lies free at the end of the tube without posing danger.

Description

Die Erfindung betrifft einen Bauwerk mit einer Umlenkstelle für ein korrosionsgeschütztes Zugglied , insbesondere für ein Schrägseil am Pylon einer Schrägseilbrücke.The invention relates to a building with a deflection point for a corrosion-protected tension member, in particular for a stay cable on the pylon of a cable-stayed bridge.

Bei Schrägseilbrücken ist es bekannt, die im Winkel zueinander verlaufenden Schrägseile, mit denen der Fahrbahnträger gegenüber einem Pylon abgespannt ist und die meist aus einem Bündel von Einzelelementen wie zum Beispiel Stahldrahtlitzen bestehen, mit dem Pylon kraftübertragend zu verbinden. Dies kann einmal dadurch geschehen, dass die aus unterschiedlichen Richtungen kommenden Schrägseile im Pylon enden und dort - gegebenenfalls einander überkreuzende - verankert sind; hierdurch ist eine Vielzahl von Verankerungsvorrichtungen erforderlich. Eine andere Möglichkeit besteht darin, dass die Schrägseile im Pylon sattelartig umgelenkt werden, wobei die rechtwinklig zur Schrägseilachse verlaufenden Laibungskräfte über den Sattel auf den Pylon abgetragen werden.In cable-stayed bridges, it is known to interconnect the angle cables running each other, with which the roadway carrier is braced against a pylon and usually consist of a bundle of individual elements such as steel wire strands, with the pylon force transmitting. This can happen once by the fact that the cables coming from different directions end in the pylon and there - are anchored - possibly crossing each other; As a result, a variety of anchoring devices is required. Another possibility is that the stay cables in the pylon are deflected in the manner of a saddle, wherein the soffit forces running at right angles to the cable-stayed axis are removed via the saddle to the pylon.

Im Falle von Beschädigungen eines solchen Schrägseils, zum Beispiel durch Korrosionserscheinungen an den aus Stahl bestehenden Zugelementen, muss die Möglichkeit bestehen, ein solches Schrägseil auswechseln zu können. Hierzu ist bei einer bekannten Lösung im Pylon ein sattelförmig gekrümmter Kanal gebildet, in den jeweils ein Schrägseil eingeschoben werden kann ( DE 88 10 423 U ). Der Kanal besteht in seinem unteren Bereich aus einem eine Auflagerrinne bildenden Halbrohr mit einem Sattellager im Scheitelpunkt, wo ein das Bündel aus einzelnen Zugelementen in diesem Bereich umhüllendes Sattelrohr gegen Längsverschiebungen arretiert werden kann. Dies geschieht durch eine im Scheitelpunkt der Umlenkung im Verlauf der Auflagerrinne angeordnete Lagerschale, in die ein Lagerring passt, der an dem Sattelrohr befestigt ist.In the case of damage to such a cable, for example, by corrosion on the existing steel tension members, it must be possible to replace such a cable. For this purpose, a saddle-shaped curved channel is formed in a known solution in the pylon, in each of which a stay cable can be inserted ( DE 88 10 423 U ). The channel consists in its lower part of a support tube forming a half pipe with a saddle bearing at the apex, where a bundle of individual tension elements in this area enclosing the seat tube can be locked against longitudinal displacements. This is done by a in the vertex of the deflection in the course of the support channel arranged bearing shell into which a bearing ring fits, which is attached to the seat tube.

Zur Stabilisierung und zur Erzielung eines Verbundes zwischen den einzelnen Zugelementen des Bündels und dem Sattelrohr sind die verbliebenen Hohlräume mit einem erhärtenden Material, zum Beispiel Zementmörtel, verpresst. Zur Verbesserung des Verbundes mit dem erhärtenden Material können die Zugelemente, also zum Beispiel die Stahldrahtlitzen, zumindest im Scheitelbereich vorzugsweise durch Sandstrahlen aufgeraut sein.To stabilize and achieve a bond between the individual tension elements of the bundle and the seat tube, the remaining cavities are pressed with a hardening material, for example cement mortar. To improve the bond with the hardening material, the tension elements, ie, for example, the steel wire strands, can be roughened, preferably by sandblasting, at least in the apex region.

Bei der bekannten Lösung ist das Sattelrohr außerhalb des Pylons mittels Flanschringen unmittelbar mit der Verrohrung des Bündels im freien Bereich des Schrägseils verbunden. Dies hat zur Folge, dass der im Pylon gebildete Kanal der, um ein Auswechseln des Bündels mit dem Sattelrohr zu ermöglichen, einen relativ großen Querschnitt, zumindest eine größere Höhe aufweisen muss als der Durchmesser des Bündels, an den stirnseitigen Ein- bzw. Austrittsstellen des Schrägseils offen ist. Diese Öffnung ist nachteilig, weil von dort aus Umwelteinflüsse einwirken, auch Tiere, insbesondere Vögel, eindringen können, was zu Verschmutzungen und Korrosionserscheinungen führen kann.In the known solution, the seat tube outside of the pylon by means of flange rings directly with the casing of the bundle in the free area of the stay cable connected. The result of this is that the channel formed in the pylon, which in order to allow replacement of the bundle with the seat tube, must have a relatively large cross-section, at least a greater height than the diameter of the bundle, at the frontal entry or exit points of the bundle Cable stayed is open. This opening is disadvantageous because from there on environmental influences act, animals, especially birds, can penetrate, which can lead to contamination and corrosion phenomena.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine einfache und wirtschaftliche, vor allem aber auch den statischen Erfordernissen Rechnung tragende Möglichkeit aufzuzeigen, um bei einer solchen Schrägseilbrücke die Öffnungen des Führungskanals für das Schrägseil zu verschließen.Against this background, the invention has the object to show a simple and economical, but above all, the static requirements account bearing possibility to close the openings of the guide channel for the stay cable in such a cable-stayed bridge.

Nach der Erfindung wird diese Aufgabe durch die im Anspruch 1 angegebenen Merkmale gelöst.According to the invention, this object is achieved by the features specified in claim 1.

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

Bei der Lösung der Aufgabe geht die Erfindung davon aus, die stirnseitigen Öffnungen des Führungskanals dadurch zu verschließen, dass die Verrohrung im freien Bereich des Schrägseils mittelbar oder unmittelbar an das Bauwerk, also den Pylon, angeschlossen wird. Aus Gründen der Fixierung des Schrägseils gegen Längsbewegungen im Bereich des Sattels kann hierbei aber auf das solche Kräfte durch Verbund übertragende Sattelrohr nicht verzichtet werden. Deshalb muss Sorge dafür getragen werden, dass die einzelnen Zugelemente auch bei unvermeidlichen Einbautoleranzen, Temperaturbewegungen oder Rohrschwingungen bei ihrem Austritt aus dem starren Sattelrohr nicht beschädigt oder sonst wie beeinträchtigt werden.In the solution of the problem, the invention is based on the fact that the frontal openings of the guide channel to be closed by the fact that the tubing in the free area of the cable is directly or indirectly connected to the building, so the pylon. For reasons of fixing the stay cable against longitudinal movements in the saddle but this can not be dispensed with such forces by composite transmitting seat tube. Therefore, care must be taken to ensure that the individual tension elements are not damaged or otherwise impaired even in the case of unavoidable installation tolerances, temperature fluctuations or tube vibrations when they exit the rigid seat tube.

Die erfindungsgemäße Lehre, das kreisbogenförmig gekrümmte Sattelrohr über den tangentialen Austritt des Bündels hinaus so weit weiterzuführen, dass das Bündel ohne Gefahr einer Anlage am Ende des Sattelrohrs frei liegt, ist eine sehr einfache Möglichkeit um sicherzustellen, dass sich das Litzenbündel auch bei Einbautoleranzen ohne die Gefahr einer Anlage oder gar eines Knicks am Ende des Sattelrohrs abhebt. Damit entfällt eine aufwendige trompetenförmige Aufweitung des Sattelrohres am Ende, wodurch auch das Aussparungsrohr, das im Pylon den sattelförmigen Führungskanal für das Schrägseil bildet, bei der Forderung nach Auswechselbarkeit im Durchmesser kleiner ausgeführt werden kann, als wenn das Sattelrohr in seinem Endbereich bei Austritt des Bündels aufgeweitet wäre.The teaching according to the invention of continuing the circular arcuate saddle tube beyond the tangential outlet of the bundle so that the bundle is exposed without risking contact at the end of the saddle tube is a very simple way of ensuring that the bundle of strands does not suffer any misalignment Danger of a plant or even a kink at the end of the seat tube lifts. This eliminates a complex trumpet-shaped widening of the saddle tube at the end, whereby the recess tube, which forms the saddle-shaped guide channel for the stay cable in the pylon, smaller in the demand for interchangeability in diameter can be performed as if the seat tube would be widened in its end at the outlet of the bundle.

Die Erfindung wird nachstehend eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigt

Fig. 1
einen Vertikalschnitt durch eine erfindungsgemäß ausgebildete Umlenkstelle eines an einem Pylon sattelförmig umgelenkten Schrägseils,
Fig. 2
das Detail II aus Fig. 1 in größerem Maßstab,
Fig. 3
einen Schnitt durch die Verrohrung des Schrägseils entlang der Linie III-III und
Fig. 4
einen Schnitt durch die Verrohrung entlang der Linie IV-IV in Fig. 1.
The invention will be explained in more detail below an embodiment shown in the drawing. It shows
Fig. 1
FIG. 2 a vertical section through an inventive deflecting point of a cable that is saddle-shaped on a pylon,
Fig. 2
the detail II off Fig. 1 on a larger scale,
Fig. 3
a section through the casing of the cable along the line III-III and
Fig. 4
a section through the casing along the line IV-IV in Fig. 1 ,

In Fig. 1 ist die Erfindung am Beispiel eines in einem Pylon 2 aus Stahlbeton umgelenkten Schrägseils 1 in einem Vertikalschnitt dargestellt. Das Schrägseil 1 besteht aus einem Bündel 3 aus einzelnen Zugelementen wie Stahldrähten, -stäben oder -litzen, die in ihrem freien Bereich innerhalb einer Verrohrung 4, zum Beispiel eines Hüllrohres aus PE, angeordnet sind.In Fig. 1 The invention is illustrated by the example of a bent in a pylon 2 made of reinforced concrete cable 1 in a vertical section. The stay cable 1 consists of a bundle 3 of individual tension elements such as steel wires, rods or strands, which are arranged in their free area within a casing 4, for example a cladding tube made of PE.

Im Pylon 2 ist durch ein Aussparungsrohr 5 mit ovalem Querschnitt ein an den Stirnseiten offener, mit dem Radius R sattelförmig gekrümmter Kanal 6 gebildet, in den das Schrägseil 1 von außen her eingeschoben werden kann. Das Bündel 3 selbst ist im Bereich seiner Hindurchführung durch den Pylon 2 in einem ebenfalls kreisbogenförmig gekrümmten Sattelrohr 7 aus Stahl geführt, innerhalb dessen die einzelnen Zugelemente des Bündels 3 durch Einpressmörtel 8 in Verbund mit dem Sattelrohr 7 gebracht sind.In the pylon 2 is formed by a recess tube 5 with an oval cross-section open at the ends, saddle-shaped with the radius R channel 6, in which the cable stay 1 can be inserted from the outside. The bundle 3 itself is guided in the region of its passage through the pylon 2 in a likewise arcuately curved seat tube 7 made of steel, within which the individual tension elements of the bundle 3 are brought by Einpressmörtel 8 in conjunction with the seat tube 7.

Im Scheitelbereich 9 der Umlenkung befindet sich ein vertieftes Sattellager 10 mit einer Ausnehmung 11, in die eine mit dem Sattelrohr 7 fest, zum Beispiel durch Schweißen, verbundene Knagge 12 einrastet. Diese Art der Verankerung gewährleistet bei voller Auswechselbarkeit des Schrägseils 1 zuverlässig die Verhinderung von Längsbewegungen schon während der Montage des Schrägseils und ermöglicht zugleich die Aufnahme von in Längsrichtung des Schrägseils 1 auftretenden Differenzkräften. Durch diese Konstruktion wird gewährleistet, dass das gesamte Schrägseil 1 zum Auswechseln mit dem Sattelrohr 7 angehoben werden kann, bis die Knagge 12 von der Ausnehmung 11 frei kommt; die ovale Form des Aussparungsrohrs 5 lässt hierzu nach oben hin genügend Platz. Danach kann das Schrägseil 1 mit dem Sattelrohr 7 entlang der kreisbogenförmigen Krümmung des Umlenkbereichs gemäß dem Radius R aus dem Kanal 6 herausgezogen werden.In the apex region 9 of the deflection there is a recessed saddle bearing 10 with a recess 11 into which a firmly connected to the saddle tube 7, for example by welding, 12 snaps. This type of anchoring guaranteed at full interchangeability of the cable 1 reliable the prevention of longitudinal movements during the assembly of the cable and allows at the same time the recording of longitudinal forces occurring in the cable 1 differential forces. This construction ensures that the entire stay cable 1 can be raised for replacement with the seat tube 7 until the projection 12 of the recess 11th comes free; the oval shape of the recess tube 5 leaves enough space upwards. Thereafter, the stay cable 1 with the seat tube 7 along the arcuate curvature of the deflection region according to the radius R can be pulled out of the channel 6.

Der Anschluss der Verrohrung 4 des Schrägseils 1 an das Bauwerk, nämlich den Pylon 2, und die Führung des Sattelrohres 7 in diesem Bereich kann anhand der Fig. 2 bis 4 erläutert werden.The connection of the casing 4 of the cable 1 to the building, namely the pylon 2, and the leadership of the seat tube 7 in this area can be based on the Fig. 2 to 4 be explained.

Wie zunächst noch Fig. 1 zeigt, ist zwischen der Verrohrung 4 und der Außenwand 13 des Pylons 2 ein Anschlussrohr 14 aus Stahl angeordnet, das lösbar einerseits mit der Verrohrung 4 und andererseits mit dem Pylon 2 verbunden ist. Um etwaige Durchmesserunterschiede besser bewältigen zu können, kann zwischen der Verrohrung 4 im normalen Bereich und dem Anschlussrohr 14 ein Übergangsrohr 15 angeordnet sein, das, wie die Verrohrung 4, meist aus Kunststoff, insbesondere PE, besteht.Like at first Fig. 1 shows, between the casing 4 and the outer wall 13 of the pylon 2, a connecting pipe 14 made of steel, which is releasably connected on the one hand to the casing 4 and on the other hand to the pylon 2. In order to cope better with any diameter differences, a transition pipe 15 can be arranged between the casing 4 in the normal range and the connection pipe 14, which, like the casing 4, usually consists of plastic, in particular PE.

Wie insbesondere Fig. 2 als vergrößerte Darstellung des Details II aus Fig. 1 erkennen lässt, trägt das Anschlussrohr 14 am bauwerkseitigen Ende eine Flanschplatte 16, die im Umriss rechteckig ausgebildet sein kann (Fig. 4). Die Flanschplatte 16 ist mittels einer Verschraubung 17 lösbar mit dem Bauwerk 2 verbindbar, zum Beispiel gegenüber einer einbetonierten Ankerplatte 18. Die Flanschplatte 16 trägt auch dem Übergang von dem ovalen Querschnitt des Aussparungsrohrs 5 zu dem kreisförmigen Querschnitt des Schrägseils 1 Rechnung, hier dargestellt durch den Querschnitt des Anschlussrohrs 14 und demjenigen des Sattelrohrs 7.In particular Fig. 2 as an enlarged view of the detail II Fig. 1 can recognize, carries the connecting pipe 14 at the building end a flange plate 16 which may be rectangular in outline ( Fig. 4 ). The flange plate 16 is detachably connected by means of a screw 17 with the structure 2, for example against a cast-anchor plate 18. The flange 16 also contributes to the transition from the oval cross-section of the recess tube 5 to the circular cross-section of the cable 1, here represented by the Cross section of the connecting pipe 14 and that of the seat tube 7th

Zur Herstellung einer lösbaren Verbindung zwischen dem Anschlussrohr 14 und der Verrohrung 4, hier in Gestalt des Übergangsrohrs 15, besitzt das Anschlussrohr 14 am verrohrungsseitigen Ende einen Innenflansch 19, gegen den von außen her ein Außenflansch 20 des Übergangsrohrs 15 anliegt. Die kraftschlüssige Verbindung zwischen dem Übergangsrohr 15 und dem Anschlussrohr 14 wird durch eine achsparallele Verschraubung 21 gewährleistet, die gegen einen losen Flanschring 22 wirkt. Durch den von außen anlegbaren Flanschring 22 wird die Montage der Verrohrung erheblich vereinfacht. Die Verschraubungskraft wirkt auf den - angeschweißten - PE-Flansch 20 über einen Ring 23 aus elastischem Material, wie zum Beispiel Gummi oder Kunststoff, wodurch Zwängungsspannungen aus etwa auftretenden Winkelfehlern vermieden werden. Außerdem wird dadurch eine weichere Lastübertragung von Rohrschwingungen auf die Verschraubung 21 erreicht.To produce a detachable connection between the connection pipe 14 and the casing 4, here in the form of the transition pipe 15, the connection pipe 14 at the casing end has an inner flange 19, against which an outer flange 20 of the transition pipe 15 rests from the outside. The frictional connection between the transition tube 15 and the connecting pipe 14 is ensured by an axially parallel screw 21, which acts against a loose flange 22. By the externally engageable flange 22, the installation of the piping is considerably simplified. The screwing force acts on the - welded-PE flange 20 via a ring 23 made of elastic material, such as rubber or plastic, thereby avoiding restraining stresses from occurring angle errors become. In addition, a softer load transfer of pipe vibrations is achieved on the screw 21.

Fig. 2 zeigt auch die erfindungsgemäße Ausbildung des Sattelrohres 7 im Bereich des Austritts des Schrägseils 1 aus dem Pylon 2. Es ist erkennbar, wie die Einzelelemente des Bündels, die im Bereich des Sattelrohres 7 blank, d. h. nicht umhüllt sind, aber im freien Bereich des Schrägseils 1 zum Korrosionsschutz einzeln umhüllt sind, zum Beispiel Litzen 24 mit PE-Mänteln 25, von der kreisförmigen Führung mit dem Radius R innerhalb des Sattelrohres 7 tangential in die gerade Führung im freien Bereich des Schrägseils 1 übergehen. Dieser Übergang lässt sich etwa mit dem Austritt des Schrägseils 1 aus dem Pylon 2 im Bereich der Schnittlinie IV-IV in Fig. 1 lokalisieren; er ist in Fig. 2 durch den Pfeil P markiert. Erfindungsgemäß wird das Sattelrohr 7 mit seiner kreisförmigen Krümmung entlang des Radius R noch über eine gewisse Strecke L über diesen Punkt P hinaus weitergeführt, um so sicherzustellen, dass das Ende 26 des Sattelrohres 7 insbesondere in seinem unteren Bereich in radialer Richtung genügend weit von dem Bündel 3 entfernt ist. Fig. 2 It can be seen how the individual elements of the bundle, which are blank in the region of the saddle tube 7, ie not enveloped, but in the free area of the stay cable 1. In the area of the saddle tube 7, the saddle tube 7 shown in FIG for protection against corrosion are individually wrapped, for example strands 24 with PE sheaths 25, from the circular guide with the radius R within the seat tube 7 tangentially into the straight guide in the free area of the cable 1. This transition can be approximately with the exit of the cable 1 from the pylon 2 in the region of the section line IV-IV in Fig. 1 locate; he is in Fig. 2 marked by the arrow P. According to the invention, the seat tube 7 is continued with its circular curvature along the radius R over a certain distance L beyond this point P, so as to ensure that the end 26 of the seat tube 7, in particular in its lower region in the radial direction sufficiently far from the bundle 3 is removed.

Um in jedem Fall eine weiche Umlenkung des Bündels 3 in diesem Bereich, insbesondere bei seitlichen Winkelabweichungen zu erzielen, die sich auf der Baustelle leicht feststellen lassen, kann am Ende des Sattelrohres 7 an seiner Innenwand ein Polsterelement 27 aus einem elastisch und/oder plastisch verformbaren Material angeordnet sein. Dieses Polsterelement 27 kann im einfachsten Fall aus einem Rohrstück bestehen; es kann aber auch, wie in Fig. 2 dargestellt, ein Formstück sein, dessen Innenkontur mit abgerundeten Kanten dem Verlauf des Bündels 3 angepasst ist. Zweckmäßigerweise reicht dieses Polsterelement 27 über das Ende 26 des Sattelrohres 7 hinaus, um dort in jedem Fall eine weiche Abstützung des Bündels 3 zu gewährleisten.In order to achieve in each case a soft deflection of the bundle 3 in this area, especially in lateral angular deviations that can be easily determined on site, at the end of the seat tube 7 on its inner wall a pad member 27 made of an elastically and / or plastically deformable Material arranged. This upholstery element 27 may consist of a piece of pipe in the simplest case; but it can also, as in Fig. 2 shown, be a fitting whose inner contour is adapted to the course of the bundle 3 with rounded edges. Conveniently, this pad member 27 extends beyond the end 26 of the saddle tube 7, to ensure there in each case a soft support of the bundle 3.

Um auch diesen Bereich des Sattelrohres 7 satt mit Verpressmörtel 8 ausfüllen zu können, wird über das Ende des Sattelrohres 7 temporär ein Schalungsrohr 28 geschoben, das gegenüber dem Sattelrohr 7 durch eine Dichtung 29 abgedichtet wird. Nach dem Verschließen der vorderen Öffnung 30 des Schalungsrohres 28 kann, wie in Fig. 1 dargestellt, der gesamte Hohlraum ausgepresst werden. Auf die Darstellung der Verpressung wurde in Fig. 2 aus Gründen der Übersichtlichkeit verzichtet. Um ein Abplatzen des Mörtels bei Bewegungen zu verhindern, empfiehlt sich die Einlage von Maschendraht oder ähnlichem als Bewehrung am vorderen Ende.In order to fill this area of the saddle tube 7 full with grout 8, a shuttering tube 28 is temporarily pushed over the end of the saddle tube 7, which is sealed relative to the seat tube 7 by a seal 29. After closing the front opening 30 of the formwork tube 28 may, as in Fig. 1 shown, the entire cavity are pressed out. On the representation of the compression was in Fig. 2 omitted for the sake of clarity. In order to prevent the mortar from spalling during movements, the insertion of wire mesh or similar is recommended as a reinforcement at the front end.

Claims (4)

  1. A structure with a deflection point for a corrosion-protected tension member, in particular for a stay cable on the pylon of a stay cable bridge, wherein the tension member (1) comprises a bundle (3) of individual elements, for example steel wire strands (24), which is sheathed in the free region by a casing (4) and is arranged, in the region of the deflection point, inside a saddle tube (7) extending in a duct (6) curved in a circular arc, characterised in that the saddle tube (7), which is also curved in a circular arc, is extended to such an extent beyond the tangential exit (P) of the bundle (3) by a length L that the bundle (3) is exposed without risk of abutment at the end of the saddle tube (7).
  2. A structure according to Claim 1, characterised in that a padding element (27) consisting of a plastically and/or elastically deformable material, for example PE, is provided in the vicinity of the exit of the bundle (3) from the saddle tube (7).
  3. A structure according to Claim 2, characterised in that the padding element (27) is of annular shape.
  4. A structure according to Claim 2 or 3, characterised in that the inner contour of the padding element (27) is adapted to the path of the bundle (3).
EP05010924A 2004-06-01 2005-05-20 Building with a point of direction change for a corrosion protected tension member, in particular an inclined cable at the pylon of a cable-stayed bridge Not-in-force EP1609912B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL05010924T PL1609912T3 (en) 2004-06-01 2005-05-20 Building with a point of direction change for a corrosion protected tension member, in particular an inclined cable at the pylon of a cable-stayed bridge
SI200531203T SI1609912T1 (en) 2004-06-01 2005-05-20 Building with a point of direction change for a corrosion protected tension member, in particular an inclined cable at the pylon of a cable-stayed bridge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004008620U DE202004008620U1 (en) 2004-06-01 2004-06-01 Formation of a corrosion-protected tension member in the region of a deflection point arranged on a support, in particular of an inclined cable on the pylon of a cable-stayed bridge
DE202004008620U 2004-06-01

Publications (2)

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EP1609912A1 EP1609912A1 (en) 2005-12-28
EP1609912B1 true EP1609912B1 (en) 2010-10-13

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EP05010924A Not-in-force EP1609912B1 (en) 2004-06-01 2005-05-20 Building with a point of direction change for a corrosion protected tension member, in particular an inclined cable at the pylon of a cable-stayed bridge

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US (1) US7299516B2 (en)
EP (1) EP1609912B1 (en)
JP (1) JP4629500B2 (en)
AT (1) ATE484630T1 (en)
DE (2) DE202004008620U1 (en)
ES (1) ES2354299T3 (en)
PL (1) PL1609912T3 (en)
PT (1) PT1609912E (en)
SI (1) SI1609912T1 (en)

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DE102007017697A1 (en) * 2007-04-14 2008-10-23 Dywidag-Systems International Gmbh Tension member for structures and method for its production
CN101608426B (en) * 2008-06-20 2012-04-04 上海浦江缆索股份有限公司 Preforming traction mechanism of unit strand imitating main cable linearity of suspension bridge
FR2968681B1 (en) * 2010-12-08 2015-05-29 Soletanche Freyssinet DEVICE FOR THE DEVIATION OF A STRUCTURED CABLE, SUCH AS A HAUBAN, AND A WORK THUS EQUIPPED
DE102011106431B3 (en) * 2011-07-04 2012-10-25 Dywidag-Systems International Gmbh Arrangement for supporting a tension member, in particular a stay cable, transversely to its longitudinal direction
US8640292B1 (en) * 2012-05-21 2014-02-04 Felix L. Sorkin Deviator system for use in post-tension segmental concrete construction
CN102912727A (en) * 2012-11-02 2013-02-06 江阴法尔胜住电新材料有限公司 Partial extradosed bridge wire distributing pipe cable saddle capable of avoiding slipping of stranded wires of inclined stay cable
CN102995558B (en) * 2012-12-25 2014-09-17 合肥斯派索材料科技有限公司 Pulling-rope diverter for inclination of rope tower
CN104594184B (en) * 2015-01-14 2016-07-06 山东省交通规划设计院 A kind of Long span steel-concrete composite beam cable-stayed bridge ballast system
CN105445181A (en) * 2015-11-25 2016-03-30 安徽金星预应力工程技术有限公司 Method for measuring friction coefficients of pre-stressed ducts of water-drop-shaped cable saddle of stay cable
CN105544391B (en) * 2015-12-11 2017-08-22 浙江省交通规划设计研究院 A kind of assembled cable saddle structure for suspension bridge
CN106436572B (en) * 2016-12-01 2018-03-30 德阳天元重工股份有限公司 Separate assembling dissipates cable saddle and its installation method
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CN112779867A (en) * 2021-03-22 2021-05-11 广西路桥工程集团有限公司 Construction method for forward hanging of arch rib segments of steel pipe basket arch bridge

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Also Published As

Publication number Publication date
PL1609912T3 (en) 2011-06-30
SI1609912T1 (en) 2011-03-31
EP1609912A1 (en) 2005-12-28
JP2005344502A (en) 2005-12-15
US7299516B2 (en) 2007-11-27
JP4629500B2 (en) 2011-02-09
DE202004008620U1 (en) 2005-10-13
ATE484630T1 (en) 2010-10-15
US20050262648A1 (en) 2005-12-01
ES2354299T3 (en) 2011-03-11
PT1609912E (en) 2011-01-03
DE502005010376D1 (en) 2010-11-25

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