EP0354924B1 - Couche anticorrosion pour cable de traction - Google Patents

Couche anticorrosion pour cable de traction Download PDF

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Publication number
EP0354924B1
EP0354924B1 EP88904917A EP88904917A EP0354924B1 EP 0354924 B1 EP0354924 B1 EP 0354924B1 EP 88904917 A EP88904917 A EP 88904917A EP 88904917 A EP88904917 A EP 88904917A EP 0354924 B1 EP0354924 B1 EP 0354924B1
Authority
EP
European Patent Office
Prior art keywords
cable
der
tension member
und
annular clearance
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.)
Expired - Lifetime
Application number
EP88904917A
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German (de)
English (en)
Other versions
EP0354924A1 (fr
Inventor
Wolfgang Borelly
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.)
BORELLY KETTNER Anna
Original Assignee
BORELLY KETTNER Anna
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 BORELLY KETTNER Anna filed Critical BORELLY KETTNER Anna
Priority to AT88904917T priority Critical patent/ATE66708T1/de
Publication of EP0354924A1 publication Critical patent/EP0354924A1/fr
Application granted granted Critical
Publication of EP0354924B1 publication Critical patent/EP0354924B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F15/00—Other methods of preventing corrosion or incrustation
    • 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

  • DE-A-3532204 also discloses a similar method for corrosion protection according to the preamble of patent claim 1.
  • the task is solved by the characterizing features of claim 1.
  • the solution is planned in stages
  • the cables With the help of an electrical current of about 14-30 volts and about 4000 to 6000 amps introduced into the wires of the cables usually via the anchor body encapsulation (usually zinc alloy) into the wires of the cables, the cables are heated by measuring devices by about 40 ° to Max. 60 ° C. With regard to the heating-up time, a test is required, as this depends on the heat loss on the cladding sheet.
  • a negative pressure of up to 60 mbar may be generated even briefly in the annular gap space by means of a "pump" specially designed for vacuum technology (preferably a two-stage rotary vane vacuum pump in a performance range between about 65-200 m3 / h suction capacity).
  • a "pump" specially designed for vacuum technology preferably a two-stage rotary vane vacuum pump in a performance range between about 65-200 m3 / h suction capacity.
  • the moisture in the cavities between wires, strands and ropes can be reduced to about 1/24000 by such an evaporation and pumping process.
  • the pump conveys the steam to the outside, whereby the amount of liquid delivered can be measured and recorded in absolute terms and in relation to the time unit by means of partial pressure measurement on the downstream mass spectrometer.
  • the duration of this first drying stage naturally depends on the amount of moisture actually inside the cable and the temperatures present during evacuation. If a steady state can be recognized by means of the measuring device, this process is to be regarded as finished. Specialist companies and certain departments of local government have particular experience in this area from the frequent evacuation of district heating pipes.
  • this process reveals the amount of moisture inside the cable except for the residues mentioned.
  • the leak rate of the system i.e. the amount of leak per unit of time
  • the leak rate of the system can be determined relatively easily before the drying process. This affects the tightness of the welded sheaths as well as the function of the stuffing boxes. This provides a good opportunity to determine the practically given but not known values.
  • the nitrogen supply is automatically checked via a pressure cell. This process may be connected to an alarm signal line. Otherwise there is no risk of environmental damage due to leaks if they should actually occur.
  • the medium-sized cold carburettor can almost accommodate the annual demand that arises with normal European bridges on the Rhine and Danube, with one or two refills per year. The costs for the annual requirement - cold gasifier rental and the required nitrogen material - would be less than the annual interest amount of the funds that would be needed to fill up with the anti-corruption oil previously used.
  • the constantly renewed N2 gases sweep away the last remnants of moisture from the inside of the cable into the annular gap when they pass by and at the same time penetrate them and carry them out from there, since physically the effort to equalize the partial pressure between the two media is effective.
  • 1 kg 800 l of N2 gas are able to bind and remove 280 times the residual moisture remaining after the evaporation process, when it penetrates through fine channels and gaps between the wires and into the interior of the cable where there is material contact Partial pressure equalization can perform. This effect could exist where there are pressure differences between the cable edge and the middle and hinder the close media connection and only through the detour of the diffusion necessary close contact can be slowed down.
  • VPI 260-350 As an inexpensive fine chemical, this substance is manufactured by international large oil refineries, including Shell, under the name VPI 260-350 with certain variations in properties depending on the application.
  • the chemical is split under the influence of water vapor. Free forms Amine and nitrous acid. The latter oxidizes the iron to iron oxides on the metal surface. In addition, the surface is covered with a thin layer of amine. The nitrogen oxide produced during the oxidation of iron in turn forms nitrous acid with the moisture and oxygen present, which is able to passivate further parts of the surface.
  • the protective layers are of molecular strength and therefore of limited duration.
  • the material VPI 300 dissolves with 55.6 parts by weight in 100 parts by weight of water, the liquid that is still present being rendered ineffective in corrosion.
  • the expediently mixed VPI chemical is able to penetrate and infiltrate the moist rust material at corrosion points and thereby make the moisture present in the electrolyte ineffective against corrosion.
  • the VPI material can exert an accelerating effect on the corrosion process in the interior of the cable until these liquid parts are bound and transported away by the constant drying process in the partial pressure equalization with the flushing nitrogen. If this residual moisture is removed, which can be reliably determined by investigations using a mass spectrometer, it is no longer necessary to add this chemical.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Bridges Or Land Bridges (AREA)
  • Soft Magnetic Materials (AREA)
  • Ropes Or Cables (AREA)

Claims (4)

1. Dispositif anti-corrosion pour des éléments tendus (1) se présentant sous la forme de câbles d'acier, de faisceaux de fils métalliques parallèles ou de faisceaux de torons parallèles, destinés à recevoir des charges importantes, pour des ponts suspendus au moyen de câbles, pour le haubanage de tours et de mâts, ainsi que pour la construction de réacteurs, dans lequel l'élément tendu est entouré d'un revêtement (4) en tôle d'acier, qui est maintenu à distance de l'élément tendu (1) au moyen d'écarteurs (5), de sorte qu'il en résulte un passage annulaire entourant l'élément tendu (1), caractérisé en ce que
― l'espace annulaire est étanche vis-à-vis des deux extrémités de l'élément tendu (1),
― l'élément tendu (1) est réchauffé et/ou une dépression est créée dans l'espace du passage annulaire (3) au moyen de pompes, de sorte que l'humidité contenue dans l'élément tendu (1) s'évapore,
― le passage annulaire est rempli d'azote de façon continue, qui présente une surpression par rapport à la pression atmosphérique, et la surpression est contrôlée par un système d'alarme et d'avertissement automatique.
2. Dispositif anti-corrosion selon la revendication 1, caractérisé en ce que le passage annulaire est purgé à l'azote pour éliminer l'humidité résiduelle.
3. Dispositif anti-corrosion pour éléments tendus selon les revendications 1 et 2, caractérisé en ce que l'élément tendu (1) est chauffé à environ 40-60°C par conduction électrique.
4. Dispositif anti-corrosion pour éléments tendus selon l'une des revendications 1 à 3, caractérisé en ce que des inhibiteurs de phase vapeur sont mélangés à l'azote.
EP88904917A 1987-06-11 1988-06-10 Couche anticorrosion pour cable de traction Expired - Lifetime EP0354924B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88904917T ATE66708T1 (de) 1987-06-11 1988-06-10 Korrosionsschutz fuer zugglieder.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3723795 1987-06-11
DE19873723795 DE3723795A1 (de) 1987-06-11 1987-06-11 Korrosionsschutz fuer ein aus staehlernen seilen oder paralleldraht- oder -litzenbuendeln bestehendes zugglied

Publications (2)

Publication Number Publication Date
EP0354924A1 EP0354924A1 (fr) 1990-02-21
EP0354924B1 true EP0354924B1 (fr) 1991-08-28

Family

ID=6331851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88904917A Expired - Lifetime EP0354924B1 (fr) 1987-06-11 1988-06-10 Couche anticorrosion pour cable de traction

Country Status (4)

Country Link
EP (1) EP0354924B1 (fr)
AT (1) ATE66708T1 (fr)
DE (2) DE3723795A1 (fr)
WO (1) WO1988009847A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1831246B (zh) * 2005-03-11 2010-04-28 柳州欧维姆机械股份有限公司 带索夹填块的索夹及用其夹持悬索桥主缆的方法

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823964A1 (de) * 1988-07-15 1990-02-22 Bilfinger Berger Vorspanntech Verfahren zur erneuerung des korrosionsschutzes von zuggliedern von bruecken und gleichartig verspannten bauwerken sowie vorrichung zur durchfuehrung des verfahrens
AT407766B (de) * 1989-02-27 2001-06-25 Vorspann Technik Gmbh Spannbündel
EP0393013B2 (fr) * 1989-04-12 1997-06-25 Vorspann-Technik Gesellschaft m.b.H. Faisceau d'élément de tension constitué de membres de contrainte
AT404956B (de) * 1989-06-06 1999-04-26 Vorspann Technik Gmbh Spannbündel
DE19710170C2 (de) * 1997-03-12 1999-07-08 Eps Schaub Gmbh Korrosionsschutz-Einrichtung für ein Seil
DE19827759A1 (de) * 1998-06-23 1999-12-30 Reicon Waermetechnik Und Wasse Verfahren zum Schutz metallischer Bauteile vor Korrosion in Trocknungsanlagen der Bauindustrie
DE69816303D1 (de) * 1998-10-15 2003-08-14 Yincheng Hou Schrägseilsystem
FR2846982B1 (fr) * 2002-11-07 2005-01-28 Freyssinet Int Stup Cable de structure protege contre la corrosion, gel anti-corrosion, et procede d'injection de produits anti-corrosion dans le cable
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
JP5162203B2 (ja) * 2007-10-30 2013-03-13 株式会社Ｉｈｉインフラシステム 主ケーブル防錆システム及び橋梁
EP3792392A1 (fr) 2016-07-27 2021-03-17 Soletanche Freyssinet Câble structural à sources de lumière
EP3568526B1 (fr) 2017-01-10 2023-10-25 VSL International AG Tuyau hybride pour câble de support et son procédé de fabrication
US11519142B2 (en) 2017-02-03 2022-12-06 Soletanche Freyssinet Structural cable having an inner housing
CN111851298A (zh) * 2020-07-07 2020-10-30 北京赛亿科技有限公司 一种利用通气钢管结构的悬索桥主缆除湿系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2549299A1 (de) * 1975-11-04 1977-05-12 Wolfgang Dipl Ing Borelly Verfahren zum herstellen eines wartungsfreien, bzw. weitgehend wartungsfreien, korrosionsschutzes fuer werkseitig fabrizierte paralleldrahtbuendel und das dafuer benoetigte montageverfahren bei grossbruekkenbauten und bei aehnlichen technischen aufgaben
DE3341513A1 (de) * 1983-11-17 1985-06-20 Hans 5462 Bad Hönningen Ziegeler Verfahren fuer korrosionsschutz und konservierung von sauerstoff und mit sauerstoff oxidierenden gegenstaenden, aller art und groesse
DE3416995C2 (de) * 1984-05-09 1986-11-20 Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen Verfahren zum Einbringen eines Injektionswerkstoffes in einen Hohlraum bei Stahlbetonkonstruktionen
DE3417008C2 (de) * 1984-05-09 1986-11-13 Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen Verfahren zur Vorbereitung des Ausfüllens von einbetonierten Hüllrohren mit einer Verpreßmasse
DE3424737C1 (de) * 1984-07-05 1985-08-14 Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen Verfahren und Vorrichtung zum Verfüllen eines Ringspaltes von Daueranker-Spanndrahtlitzen mit einem Korrosionsschutzmittel
DE3629704C1 (en) * 1985-09-02 1988-01-14 Wolfgang Dipl-Ing Borelly Corrosion protection for a tension member formed from steel ropes, parallel wire bundles or parallel strand bundles
DE3532204A1 (de) * 1985-09-02 1987-05-21 Wolfgang Dipl Ing Borelly Korrosionsschutz fuer zugglieder aus drahtseilen paralleldraht - und - litzenbuendeln

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1831246B (zh) * 2005-03-11 2010-04-28 柳州欧维姆机械股份有限公司 带索夹填块的索夹及用其夹持悬索桥主缆的方法

Also Published As

Publication number Publication date
EP0354924A1 (fr) 1990-02-21
ATE66708T1 (de) 1991-09-15
DE3864517D1 (de) 1991-10-02
DE3723795C2 (fr) 1990-03-01
DE3723795A1 (de) 1988-12-29
WO1988009847A1 (fr) 1988-12-15

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