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EP0350822A3 - Process for renovating the corrosion prevention of tension elements of bridges or similar stayed constructions, and apparatus for carrying out this process - Google Patents

Process for renovating the corrosion prevention of tension elements of bridges or similar stayed constructions, and apparatus for carrying out this process Download PDF

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Publication number
EP0350822A3
EP0350822A3 EP89112544A EP89112544A EP0350822A3 EP 0350822 A3 EP0350822 A3 EP 0350822A3 EP 89112544 A EP89112544 A EP 89112544A EP 89112544 A EP89112544 A EP 89112544A EP 0350822 A3 EP0350822 A3 EP 0350822A3
Authority
EP
European Patent Office
Prior art keywords
wird
der
das
ein
durch
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.)
Withdrawn
Application number
EP89112544A
Other languages
German (de)
French (fr)
Other versions
EP0350822A2 (en
Inventor
Heinrich Fischer
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.)
BBV Systems GmbH
Original Assignee
Bilfinger und Berger Vorspanntechnik 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 Bilfinger und Berger Vorspanntechnik GmbH filed Critical Bilfinger und Berger Vorspanntechnik GmbH
Publication of EP0350822A2 publication Critical patent/EP0350822A2/en
Publication of EP0350822A3 publication Critical patent/EP0350822A3/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Bridges Or Land Bridges (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zur Erneuerung des Korrosionsschutzes von Zuggliedern, das durch folgende Verfahrensschritte gekennzeichnet ist,

  • a) der beschädigte Korrosionsschutz, beispielsweise eine Kunststoffbeschichtung oder Schutzanstriche, werden mindestens teilweise entfernt,
  • b) die freigelegten Stahldrähte (3a, 3b) werden von eventuellem Rost befreit,
  • c) das Zugglied (3) wird mit einer gasdichten Umhüllung (4) versehen, wobei durch Abstandhalter (6) ein in allen Rich­ tungen durchgehender Ringraum (1) geschaffen wird,
  • d) die im Zugglied (3) vorhandene Feuchtigkeit wird durch Erzeugen eines Unterdrucks und/oder durch Erwärmung des Zugglieds zum Verdampfen gebracht und der Wasserdampf kontinuierlich mittels der den Unterdruck erzeugenden Va­ kuumpumpe abgesaugt, bis sich ein Unterdruck-Minimum konstant einstellt,
  • e) der Ringraum (1) wird mit einem flüssigen Überzugsmittel aufgefüllt,
  • f) nach Füllung des Ringraums (1) wird das noch flüssige Überzugsmittel am Tiefpunkt der Umhüllung über ein Ventil abgelassen, während am Hochpunkt der Umhüllung durch ein weiteres Ventil ein trockenes Gas eingezogen wird, wobei das Zugglied (3) mit einer dünnen Schicht des Überzugsmittels beschichtet bleibt,
  • g) das Einlaß- und das Auslaßventil werden geschlossen.
    • The invention relates to a method for renewing the corrosion protection of tension members, which is characterized by the following method steps,
  • a) the damaged corrosion protection, for example a plastic coating or protective coatings, is at least partially removed,
  • b) the exposed steel wires (3a, 3b) are freed of any rust,
  • c) the tension member (3) is provided with a gas-tight envelope (4), with a spacer (6) creating a continuous ring space (1) in all directions,
  • d) the moisture present in the tension member (3) is evaporated by generating a vacuum and / or by heating the tension member and the water vapor is continuously sucked off by means of the vacuum pump generating the vacuum until a vacuum minimum is constant,
  • e) the annular space (1) is filled with a liquid coating agent,
  • f) after filling the annular space (1), the still liquid coating agent is discharged at the low point of the casing via a valve, while at the high point of the casing a dry gas is drawn in, the traction member (3) with a thin layer of the coating material remains coated,
  • g) the inlet and outlet valves are closed.

    • Nach einer bevorzugten Ausführungsform wird die Gas­ füllung bzw. Fluidfüllung des Ringraumes auf Dauer mit einem Überdruck versehen um Leckageverluste auszugleichen, wobei der Überdruck durch ein automatisches Alarm- und Meldesystem überwacht wird. According to a preferred embodiment, the gas Filling or fluid filling of the annulus with permanently pressurized to compensate for leakage losses, the overpressure by an automatic alarm and Notification system is monitored.

    Die Erfindung betrifft ferner eine Vorrichtung zur Durchführung des Verfahrens, bei der die Umhüllung als Schutzrohr an den Enden abgedichtet ist und Anschlüsse für die Saug- und Pumpvorrichtung angeordnet sind. The invention further relates to a device for Carrying out the procedure in which the wrapping as Protective tube is sealed at the ends and connections are arranged for the suction and pumping device.

    EP89112544A 1988-07-15 1989-07-10 Process for renovating the corrosion prevention of tension elements of bridges or similar stayed constructions, and apparatus for carrying out this process Withdrawn EP0350822A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19883823964 DE3823964A1 (en) 1988-07-15 1988-07-15 METHOD FOR RENEWING THE CORROSION PROTECTION OF TENSION LINES OF BRIDGES AND SIMILAR TENSIONED CONSTRUCTIONS, AND DEVICE FOR IMPLEMENTING THE METHOD
    DE3823964 1988-07-15

    Publications (2)

    Publication Number Publication Date
    EP0350822A2 EP0350822A2 (en) 1990-01-17
    EP0350822A3 true EP0350822A3 (en) 1990-04-18

    Family

    ID=6358709

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP89112544A Withdrawn EP0350822A3 (en) 1988-07-15 1989-07-10 Process for renovating the corrosion prevention of tension elements of bridges or similar stayed constructions, and apparatus for carrying out this process

    Country Status (2)

    Country Link
    EP (1) EP0350822A3 (en)
    DE (1) DE3823964A1 (en)

    Families Citing this family (13)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE4435744C2 (en) * 1994-10-06 1997-10-02 Dyckerhoff & Widmann Ag Process for cleaning and exposing length-wise sections of steel wire strands
    DE19710170C2 (en) * 1997-03-12 1999-07-08 Eps Schaub Gmbh Corrosion protection device for a rope
    FR2790492A1 (en) * 1999-03-01 2000-09-08 Baudin Chateauneuf Shrouding for cables consists of one or more strips wrapped round cables using heat shrinking material with edge lips forming beading when brought together to be held by slide
    FR2790493B1 (en) * 1999-03-01 2001-09-14 Baudin Chateauneuf PROTECTION OF CABLE BEAMS BY HEAT SHRINK TAPE, ESPECIALLY WITH LIPS AND SLIDE
    JP5162203B2 (en) * 2007-10-30 2013-03-13 株式会社Ｉｈｉインフラシステム Main cable rust prevention system and bridge
    CN102713070A (en) * 2009-10-14 2012-10-03 道路和海上服务 A bridge construction and method for modifying strain characteristics of a bridge
    WO2011116834A1 (en) * 2010-03-26 2011-09-29 Vsl International Ag Improvement for a strand guiding device
    CN106439138B (en) * 2016-10-25 2019-04-09 深圳市科兰德实业发展有限公司 A kind of constant pressure valve of constant steam partial pressure
    CN107869466B (en) * 2017-11-07 2019-06-21 唐山龙泰辰实业股份有限公司 A kind of water pump being conveniently replaceable filter screen
    CN108487050A (en) * 2018-03-22 2018-09-04 谢志坚 A kind of bridge pedestal telescopic device based on municipal science of bridge building
    CN111945562B (en) * 2020-08-12 2022-07-01 郑州大学 A kind of dehumidification method of suspension bridge main cable
    CN113389134B (en) * 2021-06-07 2022-06-07 中建三局第一建设工程有限责任公司 Steel plate strip suspension bridge and construction method thereof
    CN114232478B (en) * 2021-09-06 2023-09-15 郑州大学 An efficient method for dehumidifying main cables of suspension bridges

    Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE1091906B (en) * 1953-05-05 1960-10-27 British Ropes Ltd Process for impregnating ropes
    US3646748A (en) * 1970-03-24 1972-03-07 Frederic A Lang Tendons for prestressed concrete and process for making such tendons
    US4117582A (en) * 1972-08-05 1978-10-03 Wolfgang Borelly Apparatus for producing parallel wire strands for bridges and the like by winding and unwinding strand of large cross-section and for simultaneously applying corrosion protection thereto

    Family Cites Families (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE3343352C1 (en) * 1983-11-30 1985-06-05 Max 8228 Freilassing Aicher Composite cable for prestressed concrete constructions, preferably for cable-stayed bridges
    DE3437350A1 (en) * 1984-08-30 1986-03-13 Ulrich Dr.Ing. e.h. Dr.Ing. 8000 München Finsterwalder CABLES FOR CONSTRUCTIONS, ESPECIALLY INCLINED CABLE BRIDGES AND METHOD FOR THE PRODUCTION THEREOF
    DE3437107A1 (en) * 1984-10-10 1986-04-10 Dyckerhoff & Widmann AG, 8000 München TIE LINK, ESPECIALLY SLOPED ROPE FOR A SLIDING ROPE BRIDGE
    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
    DE3723795A1 (en) * 1987-06-11 1988-12-29 Wolfgang Dipl Ing Borelly CORROSION PROTECTION FOR A TENSION LINK CONSTRUCTED FROM STEEL ROPES OR PARALLEL WIRE OR STRAND

    Patent Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE1091906B (en) * 1953-05-05 1960-10-27 British Ropes Ltd Process for impregnating ropes
    US3646748A (en) * 1970-03-24 1972-03-07 Frederic A Lang Tendons for prestressed concrete and process for making such tendons
    US4117582A (en) * 1972-08-05 1978-10-03 Wolfgang Borelly Apparatus for producing parallel wire strands for bridges and the like by winding and unwinding strand of large cross-section and for simultaneously applying corrosion protection thereto

    Non-Patent Citations (2)

    * Cited by examiner, † Cited by third party
    Title
    BETON & STAHLBETONBAU, Band 83, Nr. 12, Dezember 1988, Seiten 334-338, Berlin, DE; JUNGWIRTH: "Hochleistungsfähige Schrägseile aus der Sicht des Betonbauers" *
    CIVIL ENGINEERING, November 1980, Seiten 32,33, London, GB; DONOVAN: "Vacuum impregnation for restoring structures" *

    Also Published As

    Publication number Publication date
    DE3823964A1 (en) 1990-02-22
    DE3823964C2 (en) 1990-06-28
    EP0350822A2 (en) 1990-01-17

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