EP0914521B1 - Vorrichtung zum dämpfen von schwingungen in kabeln - Google Patents

Vorrichtung zum dämpfen von schwingungen in kabeln Download PDF

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Publication number
EP0914521B1
EP0914521B1 EP97935609A EP97935609A EP0914521B1 EP 0914521 B1 EP0914521 B1 EP 0914521B1 EP 97935609 A EP97935609 A EP 97935609A EP 97935609 A EP97935609 A EP 97935609A EP 0914521 B1 EP0914521 B1 EP 0914521B1
Authority
EP
European Patent Office
Prior art keywords
ring
cable
resilient
visco
flexible container
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
EP97935609A
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English (en)
French (fr)
Other versions
EP0914521A1 (de
Inventor
Jérôme Stubler
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.)
Freyssinet International STUP SA
Original Assignee
Freyssinet International STUP SA
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Filing date
Publication date
Application filed by Freyssinet International STUP SA filed Critical Freyssinet International STUP SA
Publication of EP0914521A1 publication Critical patent/EP0914521A1/de
Application granted granted Critical
Publication of EP0914521B1 publication Critical patent/EP0914521B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports

Definitions

  • the present invention relates to a device vibration dampening of a cable. She finds a particular but not exclusive application in the field civil engineering works whose structure uses such cables, for example suspension or cable-stayed bridges.
  • cables or shrouds are subjected to vibrations due to wind and / or rain or to the circulation of vehicles on deck.
  • the invention relates more precisely to a device comprising a first member surrounding a section of the cable and secured to said section, a second member, connected to an element to which a portion of the cable is fixed, and placed around the first organ, and damping means placed between the first and second organs.
  • a device of this type for absorbing the vibrations of a shroud, is described in the European patent EP 0 343 054A.
  • the two organs define a cavity ring finger filled with a viscous substance providing the desired amortization during relative movements of two organs.
  • An object of the present invention is to provide a damping device for a live cable, responding in a simple and reliable way to sealing problems, and whose development is facilitated.
  • the invention thus provides a device depreciation of the type indicated in the introduction, in which the damping means comprise on the one hand a ring elastic or viscoelastic resting on the first organ and on the second member, on the other hand, a flexible tank containing a viscous substance, this flexible tank being housed in an annular compartment formed between the first and second organs.
  • the flexible tank constitutes a chamber constant volume damping for which the tightness is easily achieved. Cable vibrations are effectively mitigated by the combined effect of the ring elastic or viscoelastic and viscous damping provided by the substance contained in the flexible tank. The dissipation of vibrational energy results from displacements of the viscous substance in the tank flexible, stressed when the cable vibrates in relation to the element to which it is attached.
  • the reservoir flexible consists of a hose wound in the compartment annular. We can thus adapt to different dimensions cable or shroud to be damped, by simply adjusting the hose length.
  • the elastic or viscoelastic ring can consist of two generally semi-cylindrical parts which can be fixed to each other by means of pins substantially parallel to the cable section, assembly bolts or still a tightening belt.
  • each of these parts comprises several metal half-rings embedded in a material elastic or viscoelastic molded, the ends of half-rings protruding from the molded material and being respectively provided with assembly means such as pinout holes.
  • each piece has two outer half-rings of same diameter, located on both sides, a half-ring inner of smaller diameter relative to the direction of the cable section. This is the flexibility of the elastic or viscoelastic material between the half-ring inner and outer half-rings which allows the relative movement of the cable section relative to the second organ, while exerting a return effort towards the normal position.
  • Figure 1 schematically shows where a damping device can be placed according to the invention on the stay cable 6 of a structure 8 such as a bridge wire.
  • the stay cable is anchored at its two ends on respective blocks 10 integral with foundations or appropriate structural elements 12.
  • the device damping is placed near the lower end 14 of the stay cable 6, anchored in the deck 12 of the bridge.
  • a similar structure can be placed near from the upper end of the stay cable 6, anchored in a pylon from the bridge.
  • the end 14 of the guy wire passes through a guide rigid tubular 16 fixed to the anchor block 10.
  • FIGs 2 and 3 illustrate a possible mounting of the inner tube 20 on the shroud 6 in the case where the latter consists of strands gathered in a section bundle hexagonal.
  • the tube 20 consists of two semi-cylindrical portions 20a, 20b each belonging to a shell respective.
  • Each of the shells has three plates 34 which are applied against sides of the section hexagonal shroud, with interposition of a strip of glue 36.
  • Longitudinal shims 38 are welded between the semi-cylindrical portion 20a and the plates 34, in the center of these last.
  • the plates 34 have two axial ends protruding from the tube 20. At these ends, both shells have edges side 40 allowing their assembly by means of screws 42. Tightening the screws 42 makes it possible to block the tube 20 on the stay section 6.
  • the outer tube 22 is presented as a box cylindrical which, in service, is fixed to the tubular guide 16 anchored to the foundation.
  • the outer tube 22 presents towards the lower end of the shroud a flange 46 bolted on a complementary flange 48 provided at the outlet of the guide tubular 16.
  • the elastic ring 24 is made up of two shaped halves general semi-cylindrical assembled after their implementation place on the inner tube 20.
  • Such a half of a ring 50 is shown on the figure 4. It consists of three metal half-rings 52, 54, 56 embedded by molding in an elastomeric material 58, namely two outer half-rings of the same diameter 52, 54 and an inner half-ring of smaller diameter 56.
  • the elastomeric material 58 has a cross section generally V-shaped, the inner half-ring 56 being located at the base of this V, and the two half-rings 52, 54 being located at the ends of the branches of this V.
  • the groove 32 is thus defined between the two branches of the V made of elastomeric material capable of compress under the effect of transverse vibrations of the guy 6.
  • the metal half-rings 52, 54, 56 each have, over the majority of their perimeter, a section rectangular in shape.
  • the half-rings 52, 54, 56 each have their two ends 62, 64, 66 which protrude from the material molded elastomer 58.
  • One end 62, 64, 66 of each half ring 52, 54, 56 is in the form of a yoke provided with a pinout hole 72, 74, 76, while the other end 63, 65, 67 has a shape complementary to the screed and is provided with a corresponding pin hole 73, 75, 77.
  • the pinholes 72-77 allow the assembly of two ring halves 50 using three pairs of pins 82, 84, 86 extending parallel to the direction of the shroud section 6 (see the lower part of the figure 2).
  • Half a ring 50 is easily manufactured in injecting the elastomeric material 58 into a form mold appropriate in which we have previously placed the three half-rings 52, 54, 56, then by vulcanizing the elastomeric material.
  • the stiffness of the elastic ring 24 can be adjusted according to the dynamic properties sought in playing on the elasticity parameters and the thicknesses of the elastic or viscoelastic molded material.
  • the flexible hose 26 is helically wound in compartment 30 delimited on the one hand by the groove 32 of the ring 24, and on the other hand by the inner face of the outer tube 22.
  • the hose 26 has a of its closed ends, and its other end which communicates with the outside of compartment 30 by through a bore 90 formed in a spindle 84 of one of the pairs of half-rings outer 54 of the elastic ring 24.
  • This end 92 hose 26 is thus accessible to fill the latter with viscous damping substance.
  • This substance 28 is typically an oil or other viscous fluid, or a viscous gel whose viscosity is optimized as a function characteristics of the shroud to be amortized.
  • the installation of the damping device described above takes place for example as follows.
  • the guy wires 6 are installed and anchored at their two ends, passing them through the tubular guide 16 and the outer tube 22.
  • the tube 22 is then moved away from the guide 16 to give access to the section of the shroud receiving the device.
  • the inner tube 20 is put in place and blocked on the stay section by assembling its two shells and by tightening the screws 42.
  • the two halves of the ring 24 are then placed around the inner tube 20, then paperbacks.
  • the outer tube 22 is engaged around together, we fill the hose 26 with the oil 28, and we fixes the outer tube 22 on the flange 48 of the guide tubular 16.
  • the strand 6 has an envelope external protector, it can be fixed on the end of the outer tube 22 opposite the guide 16.
  • Figure 5 shows an alternative embodiment of the invention, in which the ring 24 and the compartment annular where the flexible tank is housed are juxtaposed the along the direction of the shroud section 6.
  • the tube interior is divided into two juxtaposed sections 100,101 attached to the shroud as described with reference to the Figure 3.
  • One of these sections 100 receives the ring 24 which has the same structure and the same mounting method as previously ( Figure 4), except that the groove 32 is not used to contain the viscous substance tank.
  • the other section 101 of the inner tube is provided with two transverse flanges 103,104 at its two ends axial.
  • the annular compartment 105 receiving the flexible tank 106 of viscous material 28, is internally delimited by the section 101 of the tube inside, and axially by the two flanges 103,104. Towards the outside, this compartment 105 is delimited by a ring 107 acting like a piston.
  • This ring 107 is presented in the form of two half-rings assembled around the shroud during the installation of the device. Outwards, the half-rings have radial protrusions 108 by which they bear against the outer tube 22.
  • the flexible tank 106 consists of a pocket occupying the axial length of annular compartment 105 and enveloping the perimeter of the tube section 101.
  • This pocket 106 is filled with viscous substance 28 after installation of the assembly by conduits 109 passing through the ring 107 and its outgrowths 108 as shown in FIG. 5.
  • the vibrations of the shroud make the piston ring 107 moves radially relative to the tube section 101 and to the flanges 103,104 so that the substance contained in pocket 106 moves into a chamber constant volume and provides the desired amortization.
  • a device according to the invention can be used to absorb the vibrations of a cable other than a stay cable, for example a load-bearing cable or a suspension from a suspension bridge or an undersea cable ...
  • the portion of the cable attached to a foundation or the like is not necessarily one of its extremities.
  • the element to which is fixed this portion can be a foundation or any element of structure, including a network of cables.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Vibration Prevention Devices (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Claims (10)

  1. Vorrichtung zum Dämpfen der Schwingungen eines unter Spannung stehenden Kabels (6), umfassend ein erstes Element (20; 100, 101), das einen Abschnitt des Kabels umgibt und mit dem Abschnitt verbunden ist, ein zweites Element (22), das mit einem Element (12) verbunden ist, an dem ein Bereich des Kabels (6) befestigt ist, und das um das erste Element herum angeordnet ist, sowie Dämpfungsmittel, die zwischen dem ersten und dem zweiten Element angeordnet sind, dadurch gekennzeichnet, daß die Dämpfungsmittel einerseits einen elastischen oder viskoelastischen Ring (24) umfassen, der sich am ersten Element (20; 100) und am zweiten Element (22) abstützt, und andererseits einen flexiblen Behälter (26, 106) umfassen, der eine viskose Substanz (28) enthält, wobei dieser flexible Behälter in einem zwischen dem ersten und dem zweiten Element gebildeten Ringraum (30; 105) aufgenommen ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der flexible Behälter aus einem im Ringraum (30) aufgerollten Schlauch (26) besteht.
  3. Vorrichtung nach Anspruch 1 oder 2, bei der der elastische oder viskoelastische Ring (24) aus zwei Stücken (50) mit allgemein halbzylindrischer Gestalt zusammengesetzt ist.
  4. Vorrichtung nach Anspruch 3, bei der die beiden Stücke (50) mit allgemein halbzylindrischer Gestalt mittels zum Kabelabschnitt im wesentlichen parallelen Stiften (82, 83, 86) aneinander befestigt sind.
  5. Vorrichtung nach Anspruch 2, 3 oder 4, bei der jedes der Stücke mit allgemein halbzylindrischer Gestalt (50) mehrere metallische Halbringe (52, 54, 56) umfaßt, die in ein elastisches oder viskoelastisches Formmaterial (58) eingelassen sind, wobei die Enden (62-67) der Halbringe über das Formmaterial (58) hinausragen und jeweils mit Montagemitteln (72-77) versehen sind.
  6. Vorrichtung nach Anspruch 5, bei der jedes der Stücke mit allgemein halbzylindrischer Gestalt zwei äußere Halbringe (52, 54) gleichen Durchmessers umfaßt, die bezüglich der Richtung des Kabelabschnitts auf beiden Seiten eines inneren Halbrings (56) kleineren Durchmessers angeordnet sind, wobei die Flexibilität des elastischen oder viskoelastischen Materials (58) zwischen dem inneren Halbring (56) und den äußeren Halbringen (52, 54) eine Relativbewegung des Kabelabschnitts bezüglich des zweiten Elements (22) ermöglicht.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der der elastische oder viskoelastische Ring (24) eine Vertiefung (32) aufweist, die zusammen mit einem der Elemente (22) den Ringraum (30) begrenzt.
  8. Vorrichtung nach den Ansprüchen 4 und 7, bei der einer der Stifte (84) eine Axialbohrung (90) aufweist, die Zugang zum flexiblen Behälter (26) für sein Auffüllen ermöglicht.
  9. Vorrichtung nach einem der Ansprüche 1 bis 6, bei der der elastische oder viskoelastische Ring (24) und der Ringraum (105), in dem der flexible Behälter (106) aufgenommen ist, entlang der Richtung des Kabelabschnitts nebeneinander angeordnet sind.
  10. Vorrichtung nach Anspruch 9, bei der der Ringraum (105) innen durch das erste Element (101), axial durch zwei mit dem ersten Element verbundene Querflansche (103, 104) und außen durch einen Ring (107) begrenzt ist, der sich am zweiten Element (22) abstützt und zwischen den Flanschen bezüglich des ersten Elements radial verlagerbar ist.
EP97935609A 1996-07-26 1997-07-23 Vorrichtung zum dämpfen von schwingungen in kabeln Expired - Lifetime EP0914521B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9609449 1996-07-26
FR9609449A FR2751673B1 (fr) 1996-07-26 1996-07-26 Dispositif pour amortir les vibrations d'un cable
PCT/FR1997/001374 WO1998004780A1 (fr) 1996-07-26 1997-07-23 Dispositif pour amortir les vibrations d'un cable

Publications (2)

Publication Number Publication Date
EP0914521A1 EP0914521A1 (de) 1999-05-12
EP0914521B1 true EP0914521B1 (de) 2000-04-12

Family

ID=9494529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97935609A Expired - Lifetime EP0914521B1 (de) 1996-07-26 1997-07-23 Vorrichtung zum dämpfen von schwingungen in kabeln

Country Status (12)

Country Link
US (1) US6334608B1 (de)
EP (1) EP0914521B1 (de)
JP (1) JP2000515943A (de)
CA (1) CA2260834A1 (de)
DE (1) DE69701700T2 (de)
DK (1) DK0914521T3 (de)
ES (1) ES2146480T3 (de)
FR (1) FR2751673B1 (de)
GR (1) GR3033573T3 (de)
NO (1) NO990326L (de)
PT (1) PT914521E (de)
WO (1) WO1998004780A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226525A1 (de) 2007-10-02 2010-09-08 Getzner Werkstoffe Holding GmbH Dämpfungseinrichtung zur Dämpfung von Schwingungen von längserstreckten Elementen

Families Citing this family (19)

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Publication number Priority date Publication date Assignee Title
DE20014322U1 (de) * 2000-08-19 2002-01-10 Dyckerhoff & Widmann AG, 81829 München Abstützung eines freien Zugglieds, insbesondere eines Schrägseils für eine Schrägseilbrücke
JP2002181130A (ja) * 2000-12-12 2002-06-26 Sumitomo Rubber Ind Ltd 制振装置
FR2832479B1 (fr) * 2001-11-19 2006-05-26 Maurer Friedrich Soehne Dispositif d'amortissement pour cable
FR2859260B1 (fr) * 2003-09-03 2006-02-24 Freyssinet Int Stup Dispositif pour amortir les vibrations d'un cable et procede d'amortissement associe
US7836775B2 (en) * 2006-03-09 2010-11-23 Iro Ab Yarn tensiometer
US7298672B1 (en) * 2006-08-22 2007-11-20 Pgs Geophysical Marine seismic streamer having acoustic isolation between strength members and sensor mounting
KR100816059B1 (ko) 2007-03-27 2008-03-24 케이블텍 주식회사 케이블 댐퍼
KR100980310B1 (ko) * 2009-09-11 2010-09-06 문승 케이블 고정용 브라켓 및 그 제조방법
CN102733303B (zh) * 2012-07-06 2015-01-14 巨力索具股份有限公司 用于桥梁斜拉索的弯曲限制器
FR3012193B1 (fr) 2013-10-23 2015-12-18 Soletanche Freyssinet Dispositif d'amortissement de vibrations d'un cable
FR3012479B1 (fr) 2013-10-31 2016-01-01 Soletanche Freyssinet Dispositif d'amortissement de vibrations de cables d'un systeme de suspension d'ouvrage d'art.
CH709002A1 (fr) 2013-12-18 2015-06-30 Vsl Lnternat Ag Dispositif et procédé d'amortissement par friction.
CN104652271B (zh) * 2014-12-22 2016-06-15 郑州市交通规划勘察设计研究院 一种波形钢腹板斜拉桥的拉索组合锚固块
FR3033803B1 (fr) * 2015-03-16 2021-01-29 Soletanche Freyssinet Dispositif d'amortissement de vibrations d'un cable
JP2016199860A (ja) * 2015-04-07 2016-12-01 住友ゴム工業株式会社 橋梁用ゴムダンパー
CN109056528B (zh) * 2018-09-25 2024-03-12 中铁二院工程集团有限责任公司 一种铁路上承式钢桁梁悬索桥
CN112813798A (zh) * 2021-02-03 2021-05-18 兰州铁道设计院有限公司 一种用于桥梁横向抗震的组合式耐腐蚀支撑装置
CN116876348B (zh) * 2023-08-03 2026-02-13 德阳天元重工股份有限公司 一种悬索桥主缆防护用大位移缆套
EP4579040A1 (de) 2023-12-29 2025-07-02 Soletanche Freyssinet Vorrichtung zur dämpfung von schwingungen in einem kabel

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US4090168A (en) * 1977-05-17 1978-05-16 The United States Of America As Represented By The Secretary Of The Navy Solid filled vibration isolation module for a towed sonar array
DE2823953C2 (de) * 1978-06-01 1985-01-24 Tünkers Maschinenbau GmbH, 4030 Ratingen Aufhängevorrichtung für Rüttelbären an einem Lastaufnahmemittel
DE3434620A1 (de) * 1984-09-21 1986-04-03 Dyckerhoff & Widmann AG, 8000 München Abstuetzung eines freien zugglieds, vorzugsweise eines schraegseils einer schraegseilbruecke
FR2631407A1 (fr) * 1988-05-16 1989-11-17 Freyssinet Int Stup Perfectionnements aux dispositifs pour amortir les vibrations des haubans
US5463193A (en) * 1992-05-08 1995-10-31 Australia Sonar Systems Pty Ltd Vibration isolation module
JPH0673711A (ja) * 1992-08-26 1994-03-15 V S L Japan Kk ケーブルの緩衝構造及びその施工方法
JP3644510B2 (ja) * 1995-04-07 2005-04-27 石川島播磨重工業株式会社 高粘性ダンパ
DE29517250U1 (de) * 1995-10-31 1995-12-14 Dyckerhoff & Widmann AG, 81902 München Abstützung eines freien Zugglieds, vorzugsweise eines Schrägseils einer Schrägseilbrücke
FR2757235B1 (fr) * 1996-12-16 1999-02-19 Jarret Procede et dispositif d'amortissement des vibrations transversales de cables de haubanage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226525A1 (de) 2007-10-02 2010-09-08 Getzner Werkstoffe Holding GmbH Dämpfungseinrichtung zur Dämpfung von Schwingungen von längserstreckten Elementen

Also Published As

Publication number Publication date
DK0914521T3 (da) 2000-09-25
HK1019904A1 (en) 2000-03-03
DE69701700D1 (de) 2000-05-18
NO990326D0 (no) 1999-01-25
US6334608B1 (en) 2002-01-01
GR3033573T3 (en) 2000-09-29
WO1998004780A1 (fr) 1998-02-05
ES2146480T3 (es) 2000-08-01
JP2000515943A (ja) 2000-11-28
CA2260834A1 (fr) 1998-02-05
FR2751673B1 (fr) 1998-10-02
NO990326L (no) 1999-03-25
EP0914521A1 (de) 1999-05-12
FR2751673A1 (fr) 1998-01-30
DE69701700T2 (de) 2000-11-23
PT914521E (pt) 2000-08-31

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