WO1998040561A1 - Dispositif de protection anticorrosion destine a un cable - Google Patents

Dispositif de protection anticorrosion destine a un cable Download PDF

Info

Publication number
WO1998040561A1
WO1998040561A1 PCT/DE1998/000614 DE9800614W WO9840561A1 WO 1998040561 A1 WO1998040561 A1 WO 1998040561A1 DE 9800614 W DE9800614 W DE 9800614W WO 9840561 A1 WO9840561 A1 WO 9840561A1
Authority
WO
WIPO (PCT)
Prior art keywords
rope
pipe
tube
connection
sections
Prior art date
Application number
PCT/DE1998/000614
Other languages
German (de)
English (en)
Inventor
Josef HÜNING
Original Assignee
Eps Schaub Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eps Schaub Gmbh filed Critical Eps Schaub Gmbh
Priority to EP98916828A priority Critical patent/EP1027501A1/fr
Priority to AU70295/98A priority patent/AU7029598A/en
Publication of WO1998040561A1 publication Critical patent/WO1998040561A1/fr

Links

Classifications

    • 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
    • E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables

Definitions

  • the invention relates to a corrosion protection device for a rope, in particular a pull rope on a bridge.
  • Such ropes consist of steel wires or steel strands, with several of these steel wires or strands being processed into corresponding pulling ropes.
  • main ropes are known for suspension bridges, which have a diameter of up to 650 mm and a length of up to 2 km.
  • the corrosion protection of these ropes represents a considerable problem.
  • Various methods are known: one measure provides for treating the rope with a preserving paste, then applying a covering made of copper wire, then applying a corrosion protection paste again and finally providing an external corrosion protection coating.
  • a tubular casing for a tension member such as a bridge rope
  • the casing consists of two half-shells, which are connected via dovetail-like teeth. A remaining cavity between the rope and the sheathing should be filled with an anti-corrosion agent.
  • the invention seeks to remedy this and to show a possibility of improving the corrosion protection on ropes, in particular bridge ropes.
  • the invention goes a way opposite to the prior art according to DE 43 19 888 AI.
  • the invention is based on the knowledge that a corrosion protection coating in any case creates the problems mentioned at the outset.
  • the basic idea of the invention is to provide the corrosion-prone rope with a protective sheath arranged at a distance from the rope and to design the annular space formed between the protective sheath and the rope so that it can flow through gas.
  • the rope surface remains "raw” compared to the prior art.
  • it is surrounded by an annular hollow chamber through which a suitable treatment gas is continuously conveyed.
  • a suitable treatment gas is continuously conveyed.
  • the selection of the gas is made on the basis of the task, namely to prevent corrosion protection. Dry air, for example, but also inert gases (protective gases) are suitable for this.
  • the invention relates to its most general
  • Embodiment a corrosion protection device for a rope, in particular a pull rope on a bridge, with the following
  • a tube whose inner diameter is larger than the outer diameter of the rope to be protected, wherein the tube consists of sections running one behind the other in the axial direction,
  • a continuous fluidic connection is formed from one pipe end to the other between the pipe and the rope to be protected.
  • pipe stands for any type of "sheathing” that fulfills the task of creating an at least relative gas-tightness between the rope and the environment and, at the same time, a corresponding weather protection.
  • the tube is made of a high-pressure polyethylene.
  • the tube is divided into two in each case. In this way, an "expansion joint" is created between the pipe sections, which is important in order to compensate for thermal contractions and expansions when the ambient temperature changes.
  • connection area of the pipe sections mentioned is designed to be application-specific. On the one hand, the unobstructed flow through the rope surface for corrosion protection must be ensured; on the other hand, the aforementioned relative displacement of the pipe sections to one another must be taken into account.
  • One of these variants provides for the variable distance between adjacent pipe sections to be covered by a cover attached to a pipe section.
  • This cover is, for example, also tubular and welded to one end of the pipe section, while it slides sealingly but freely on the opposite end of the pipe section. Additional seals between the free end of the cover and the pipe section can improve the gas tightness - with unhindered relative movement to one another.
  • the compensation zone can also be bridged by a bellows with an axial oversize which is sealingly fastened on both pipe sections.
  • the dry air could possibly flow over the distance between adjacent pipe sections into the area below the bellows, but would be "caught” there and could accordingly not leave the closed ring duct system.
  • the bellows can in turn be surrounded at a distance by a sleeve which is fastened on the circumferential side on one piece of pipe and lies flat on the other piece of pipe.
  • a sleeve which is fastened on the circumferential side on one piece of pipe and lies flat on the other piece of pipe.
  • Such a sleeve could have a smooth surface and thus be made dirt-repellent especially in relation to a flexible bellows and additionally protect the bellows from the weather.
  • the pipe sections will be placed around the rope as half-shells on site and then welded together or connected to one another in the manner described.
  • the corrosion protection device for a rope consists of a plurality of tubes spaced one behind the other, the tube ends being formed in the connection area to an adjacent tube for positive connection with a corresponding fastening means and the fluidic connection via a bypass bridging the connection area of the tubes he follows.
  • the corrosion protection gas is not conducted directly over the surface of the rope, but the corresponding connection point is "bridged" with the help of a bypass (side path). This is not possible in the connection area, since, for example, rope clamps are forced directly onto the Rope must be clamped and the flow path is therefore necessarily interrupted.
  • connection areas can be bridged continuously and safely with the corrosion protection device according to the invention.
  • the corresponding pipe ends are sealed to the fastening means, for example the Rope clamp, articulated and the bypass mentioned bridges the connection point.
  • this is done, for example, by routing one or more connecting lines between the adjacent ring spaces around the area around the cable clamp.
  • the pipes can be screwed onto the fastening means in the region of their pipe ends or connected to them in some other way.
  • the tube ends can be formed at the same time with spacers, which create an even annular space between the rope and tube over the length of the tube.
  • a main rope of a suspension bridge will accordingly consist of a plurality of tubes according to claim 1, the tubes being interconnected according to claim 5.
  • dry air is fed under pressure into the annular space between the sheathing and the rope and is guided continuously over the entire rope length to the other end, whereby the air can of course also be carried out in partial air flows.
  • the described corrosion protection device works completely without chemicals. It can be retrofitted to existing bridge structures. It creates a high level of corrosion protection security. It takes thermal influences on the rope into account. It can therefore be used in both dry and damp, cold and warm areas.
  • the device can be used advantageously, particularly in climatic zones with changing temperatures.
  • the individual pipes can have a length of 10, 20 or 30 m, for example. Their diameter depends on the local conditions (rope diameter).
  • Figure 1 A view of a portion of a main rope of a suspension bridge with anti-corrosion device.
  • Figure 2 The connection area of adjacent pipe sections in longitudinal section.
  • Figure 3 The connection area of adjacent pipes on a cable clamp (in longitudinal section).
  • a partial section of a rope (10) can be seen in FIG. 1, rope clips (12) being attached to the rope (10) at intervals of approximately 20 m each, to which (not shown here) vertically extending tie rods (also not in total) shown) are attached to the suspension bridge.
  • Pipes (14) run around the cable (10) at a distance, the end of a pipe (14a) in front of the cable clamp (12a), the pipe (14b) between the cable clamps (12a, 12b) and the pipe end of a pipe (14c) behind the rope clamp (12b) can be seen.
  • the tube (14b) is divided approximately in the middle, specifically in the area of the area (16) which is “thickened” according to FIG.
  • the pipe sections (14.1, 14.2) are arranged at a distance from each other (compensation zone 24), the compensation zone (24) being covered by a cylindrical sleeve (26) which is welded to the pipe section (14.2) with one end (26e) and with the other end (26f) slides flatly on the pipe section (14.1) when the pipe sections (14.1, 14.2) move relative to one another (for example due to a change in temperature).
  • a bellows (28) is also provided in the end region of the pipe sections (14.1, 14.2), the ends (28e) of which are sealed to the pipe sections (14.1, 14.2) and the excess of which is illustrated by the wave-shaped representation of the bellows (28).
  • the cover hood (18) in turn protects the bellows (28) from external weather conditions.
  • the cover (18) is made from a cylindrical section (18z) with slightly conical end sections, one end (18e) being welded onto the pipe section (14.1), while the other end (18f) is conductive in the axial direction on the adjacent pipe section (14.2).
  • FIG. 3 shows an embodiment for the formation of the pipes (14) in the area of the cable clamps (12).
  • Each pipe section (14.2, 14.1) is formed at the free end with an inner ring flange (40) which is fixedly connected to the pipe (14) and is designed to be connectable to the cable clamp (12) by means of an axial screw connection (42).
  • the pipe section (14.2) Since the cable clamp (12) lies directly on the cable (10), the pipe section (14.2) has an opening (44) in front of the ring flange (40), from which an overflow pipe (46) is closed a corresponding opening (44) in the pipe section (14.1), so that the dry air led through the annular space (22) in front of the connection area (from cable clamp 12 and ring flanges 40) into the overflow pipe (46) (bypass) and from there into the annular chamber (22) is guided in the area of the adjacent pipe section (14.1) behind the connection area.
  • the preferably rigid sheathing tube provides a high level of security against the weather. It can be smooth on the surface so that neither snow nor dirt can accumulate to any appreciable extent and can hinder or clog the system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

L'invention concerne un dispositif de protection anticorrosion destiné à un câble, en particulier à un câble de traction (10) monté sur un pont.
PCT/DE1998/000614 1997-03-12 1998-03-03 Dispositif de protection anticorrosion destine a un cable WO1998040561A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP98916828A EP1027501A1 (fr) 1997-03-12 1998-03-03 Dispositif de protection anticorrosion destine a un cable
AU70295/98A AU7029598A (en) 1997-03-12 1998-03-03 Cable anticorrosion device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997110170 DE19710170C2 (de) 1997-03-12 1997-03-12 Korrosionsschutz-Einrichtung für ein Seil
DE19710170.4 1997-03-12

Publications (1)

Publication Number Publication Date
WO1998040561A1 true WO1998040561A1 (fr) 1998-09-17

Family

ID=7823098

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/000614 WO1998040561A1 (fr) 1997-03-12 1998-03-03 Dispositif de protection anticorrosion destine a un cable

Country Status (4)

Country Link
EP (1) EP1027501A1 (fr)
AU (1) AU7029598A (fr)
DE (1) DE19710170C2 (fr)
WO (1) WO1998040561A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102561178A (zh) * 2010-12-29 2012-07-11 中交公路规划设计院有限公司 一种斜拉桥用斜拉索下锚头除湿防腐系统
GB2466421B (en) * 2007-10-30 2013-01-02 Ihi Infrastructure Sys Co Ltd Device and method for preventing rusting of cable for supporting bridge
CN106012833A (zh) * 2016-07-19 2016-10-12 株洲市完全科技有限公司 一种桥梁斜拉索锚固端防腐防水方法及端封装置
CN107881915A (zh) * 2016-09-30 2018-04-06 柳州欧维姆机械股份有限公司 具有封闭式防腐结构的悬索桥主缆系统及对悬索桥主缆系统实施封闭式防腐的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004057112A1 (fr) * 2002-12-19 2004-07-08 Yincheng Hou Systeme de protection par deshumidification conçu pour des cables porteurs de ponts suspendus
CN101057040B (zh) 2004-11-12 2010-12-08 Vsl国际股份公司 用于包括拉索的构造的防腐系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004345A1 (fr) * 1978-03-17 1979-10-03 Philipp Dipl.-Ing. Schreck Câble de béton armé précontraint et son utilisation pour la construction d'un pont suspendu
DE3734954A1 (de) * 1987-03-13 1988-04-07 Dyckerhoff & Widmann Ag Korrosionsgeschuetztes zugglied, vornehmlich spannglied fuer spannbeton ohne verbund und verfahren zu seinem einbau
WO1988009847A1 (fr) * 1987-06-11 1988-12-15 Wolfgang Borelly Couche anticorrosion pour cable de traction
EP0350822A2 (fr) * 1988-07-15 1990-01-17 Bilfinger + Berger Vorspanntechnik Gmbh Procédé de rénovation de l'anti-corrosion des membres en traction de ponts ou constructions similaires haubanées et dispositif pour la mise en oeuvre du procédé
DE4319888A1 (de) 1993-06-16 1995-01-05 Dyckerhoff & Widmann Ag Rohrförmige Ummantelung für ein Zugglied

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2592666B1 (fr) * 1986-01-07 1988-03-11 Sogelerg Systeme de sustentation par cable souple a encastrement local, notamment pour pont a haubans
FR2712900B1 (fr) * 1993-11-22 1996-02-02 Freyssinet Int Stup Perfectionnements aux procédés et dispositifs pour mettre en place des gaines discontinues sur des câbles et aux câbles ainsi gainés.
DE4433847C2 (de) * 1994-09-22 1997-09-25 Dyckerhoff & Widmann Ag Verfahren zum Einbringen einer Vergußmasse in einen Hohlraum

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004345A1 (fr) * 1978-03-17 1979-10-03 Philipp Dipl.-Ing. Schreck Câble de béton armé précontraint et son utilisation pour la construction d'un pont suspendu
DE3734954A1 (de) * 1987-03-13 1988-04-07 Dyckerhoff & Widmann Ag Korrosionsgeschuetztes zugglied, vornehmlich spannglied fuer spannbeton ohne verbund und verfahren zu seinem einbau
WO1988009847A1 (fr) * 1987-06-11 1988-12-15 Wolfgang Borelly Couche anticorrosion pour cable de traction
EP0350822A2 (fr) * 1988-07-15 1990-01-17 Bilfinger + Berger Vorspanntechnik Gmbh Procédé de rénovation de l'anti-corrosion des membres en traction de ponts ou constructions similaires haubanées et dispositif pour la mise en oeuvre du procédé
DE4319888A1 (de) 1993-06-16 1995-01-05 Dyckerhoff & Widmann Ag Rohrförmige Ummantelung für ein Zugglied

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2466421B (en) * 2007-10-30 2013-01-02 Ihi Infrastructure Sys Co Ltd Device and method for preventing rusting of cable for supporting bridge
CN102561178A (zh) * 2010-12-29 2012-07-11 中交公路规划设计院有限公司 一种斜拉桥用斜拉索下锚头除湿防腐系统
CN106012833A (zh) * 2016-07-19 2016-10-12 株洲市完全科技有限公司 一种桥梁斜拉索锚固端防腐防水方法及端封装置
CN107881915A (zh) * 2016-09-30 2018-04-06 柳州欧维姆机械股份有限公司 具有封闭式防腐结构的悬索桥主缆系统及对悬索桥主缆系统实施封闭式防腐的方法

Also Published As

Publication number Publication date
AU7029598A (en) 1998-09-29
DE19710170C2 (de) 1999-07-08
DE19710170A1 (de) 1998-09-24
EP1027501A1 (fr) 2000-08-16

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