EP1512794B1 - Dispositif pour amortir les vibration d'un cable et procede d'amortissement associe - Google Patents

Dispositif pour amortir les vibration d'un cable et procede d'amortissement associe Download PDF

Info

Publication number: EP1512794B1
Authority: EP; European Patent Office
Prior art keywords: piston; cable; tube; dampers; type dampers
Prior art date: 2003-09-03
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

EP04292022A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP1512794A1 (fr

Inventor

Jean-Pierre Messein

Benoît Lecinq

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 SAS

Original Assignee

Freyssinet SAS

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.)

2003-09-03

Filing date

2004-08-10

Publication date

2006-05-31

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34130731&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1512794(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2004-08-10 Application filed by Freyssinet SAS filed Critical Freyssinet SAS

2005-03-09 Publication of EP1512794A1 publication Critical patent/EP1512794A1/fr

2006-05-31 Application granted granted Critical

2006-05-31 Publication of EP1512794B1 publication Critical patent/EP1512794B1/fr

2024-08-10 Anticipated expiration legal-status Critical

Status 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
- E01D11/00—Suspension or cable-stayed bridges
- 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
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges

Definitions

the present invention relates to devices for damping the vibrations of a cable involved in the structure of a construction structure, including a stay.
the invention applies in particular to guyed bridges.
the stays are then anchored at their ends, for example on a pylon and on the deck of the bridge. They thus ensure the maintenance and stability of the structure.
the stays Under certain conditions, especially when subjected to periodic excitations, the stays can accumulate energy and oscillate significantly.
the two main causes of these vibrations are the displacement of the anchors under the effect of traffic loads or wind, and the effect of the wind acting directly on the cables. These oscillations can cause users' anxiety. In addition, if they are not controlled, they may damage the guys.
External dampers generally use piston dampers, similar in size to those used for trucks or trains. These dampers are able to absorb energy during the relative displacement of their ends. One of these ends is fixed on the cable, either directly by means of a collar, or by means of a pendulum itself hinged on a collar fixed on the cable. The other end of the damper is fixed on a frame rigidly connected to the structure, usually the deck of the guyed bridge.
the internal dampers are placed around the stay cable. They are generally located in the extension of the tubes surrounding the bundle of metal strands composing the cable and rigidly connected to the structure (anchoring tubes for example). They act on the relative displacements between the bundle of strands of the cable and the anchoring tube surrounding the bundle of strands, in case of vibration of the cable.
JP-A-06 058370 discloses an absorber with the features of the preamble of claim 1.
An object of the present invention is to limit the disadvantages of existing dampers, as recalled above.
the invention thus proposes a device for damping the vibrations of a cable participating in the structure of a construction structure according to claim 1.
the damping device relies on the structure only through the tube, which avoids the disadvantages associated with external dampers, mentioned above.
the invention further provides a method of damping vibration of a cable, wherein vibration damping is achieved by the device having the characteristics mentioned above.
Figure 1 shows a stay including a bundle of metal strands 5, surrounded in its current part (left in Figure 1) of a sheath 6, typically plastic.
the cable also extends to the right of the figure, towards an anchoring zone.
the cable is connected to an anchoring tube 4 which is fixed rigidly to the cable-stayed structure, for example in the deck or in a pylon of a cable-stayed bridge.
a clamp 3 is provided around the metal strands 5 in order to effectively compact the bundle on a portion thereof.
This collar is preferably located near the anchoring zone, while being far enough to improve the damping. It can have various forms. According to one apparent embodiment in Figures 3 and 4, it has a hexagonal inner surface in contact with the bundle of strands, so as to clamp the bundle of strands with a minimum clearance, and is composed of two distinct parts, which can be separated when it is desired to release the bundle of metal strands.
Hydraulic piston dampers 1 the pistons having a linear stroke, are also positioned radially around the beam 5. They are connected, by one of their ends, to the cable via the clamping collar 3 (such a damper to piston 1 is shown in Figure 1).
the piston dampers 1 are also indirectly connected to the structure, via a support, for example a shell 2 placed around the bundle of strands 5 and the clamp 3, while leaving a free space between its inner surface and the bundle of strands.
the shell 2 may have a circular cross section of the same diameter as the sheath 6 at the end of which it is connected (left end of the shell in Figure 1).
the connection between the shell 2 and the structure of the structure is via the anchoring tube 4, to which the shell is connected at one of its ends (right end in Figure 1).
the anchoring tube 4 advantageously has a circular cross section of diameter close to that of the anchoring tube 4. This avoids the aesthetic disadvantages posed by the external dampers. It also benefits from effective damping by the use of hydraulic dampers, whose law damping can be for example linear, quadratic, or other.
the pistons can absorb energy during relative movements of the bundle of strands 5 relative to the structure, so as to dampen these displacements.
the connections between the piston dampers 1 and the clamp 3 on the one hand, and the shell 2 on the other hand must offer degrees of freedom capable of attenuating certain displacements of the bundle of strands 5.
the connection 7 between the piston dampers 1 and the shell 2, and the connection 8 between the piston dampers 1 and the clamp 3 are advantageously ball joints. We then have a rod operation of each piston damper.
FIGS. 6 and 7 are kinematic diagrams of this embodiment of the invention, in which the pivot connection 7 between each piston damper 1 and the shell 2 is clearly distinguished, and the ball joint 8 between each damper piston 1 and the bundle of metal strands 5 (via the clamp 3).
piston dampers 1 In order to damp the vibrations of the cable in the maximum possible directions, it is necessary to position at least two piston dampers 1 radially around the cable. If only two piston dampers are used, they shall preferably be placed perpendicular to each other, so as to damp the vibrations in all directions, each direction being then decomposed into two perpendicular components according to the directions of the two dampers. piston used.
a higher number of piston dampers 1 can be used, for reasons of robustness.
a piston damper when a piston damper is defective, it can be supplemented by the projected component of one or more other piston dampers.
the number of piston dampers will not be multiplied unduly, for economic reasons and congestion.
An advantageous embodiment consists in using three piston dampers placed around the cable at an angle of 120 ° between them. This embodiment is illustrated in FIG. 5 (where the piston dampers have not been shown, but where the connections 7 between the various piston dampers and the shell 2 are apparent).
the linear stroke of the pistons results from the amplitude of the vibrations of the cable.
the size of the piston dampers must therefore be chosen with respect to this amplitude and the damping law. It is considered, by way of illustration, that the length of a piston damper is at least three times the stroke performed. Thus, for strokes of +/- 50 mm, ie a total of 100 mm, the length of the piston is at least 300 mm.
openings 9 are provided in the shell 2, to allow access to the connection 8 and the passage through the piston dampers, while allowing the movement of the piston dampers in accordance with links 7 and 8. These openings may for example be oblong holes and they must provide sufficient clearance not to impede the movement of the piston dampers, when cable vibrations appear, but also to be able to ensure the maintenance of internal organs.
sealing means are advantageously provided .
sealed covers 12 may completely cover the damping devices around each of the piston dampers 1 used, as illustrated in FIG. 1, which has the effect of sealing the openings 9.
Another sealing system may also be used: it consists of a flexible skirt, sealingly connected to a piston damper 1 on the one hand, and to the shell 2 on the other hand.
all mechanical connections are preferably sealed.
the shell 2 is preferably aligned with the anchoring tube 4 and extended by the waterproof sheath 6 protecting the bundle metal strands 5 in the current portion.
the dampers and links deteriorate over time, which requires maintenance or even periodic replacement.
the piston dampers 1 are advantageously connected to the shell 2 and the clamp 3, without it being necessary to open the shell.
FIG. 1 provides an illustration of such a connection between a piston damper 1 and the clamp 3.
the end of the piston damper then consists of a threaded rod which can be screwed into a tapped cradle 10. complementary way, this cradle itself being connected to the ball joint 8 which connects the collar 3 to the piston damper 1.
the external thread of the piston damper 1 makes it possible to adjust the position of the piston damper as a function of the level of centering of the bundle of metallic strands 5 inside the tube 4 or the shell 2.
An anti-unscrewing system of the piston damper 1 on the cradle 10 will advantageously be used, to prevent the vibrations of the assembly from causing the unscrewing of the piston damper.
FIG. 2 shows an alternative connection between a piston damper 1 and the clamp 3.
the piston damper 1 comprises in fact at its end a rod provided with a male clevis 15.
One or more female clevises 16 are also connected rigidly to the clamp 3.
the connection between the piston damper 1 and the clamp 3 then consists in actuating in translation, from the outside of the shell 2, a pin 17 parallel to the cable, by the intermediate control means 18, operating for example in the manner of a bicycle brake cable.
this means 18 is actuated, the pin 17 is placed in or out of the orifices of the yokes 15 and 16, thus ensuring the releasable connection between the piston damper 1 and the collar 3.
the amplitude of vibration of the stay is not predictable with certainty, it may be interesting to limit the amplitude of displacement of the clamp 3 by mechanical means independent of piston dampers 1, so as to avoid unnecessarily oversize the stroke of the pistons, but also to protect them from overload. In addition, it is useful to be able to adapt the position of the damper in the case where the cable is not perfectly centered in the anchor tube, particularly because of the tolerances of execution of the structure.
adjustable running limiters may be arranged on the clamping collar 3.
FIG. 1 shows an example of such an element 11.
six screws 11 are arranged on the six outer faces of the hexagonal collar. 3 to limit the stroke of the bundle of strands 5.
These screws can be screwed or unscrewed into parts, such as nuts, welded to the faces of the clamp 3. They are advantageously terminated by a head provided with a shock absorbing material, such as rubber for example. They are positioned at a distance from the shell 2 corresponding to the maximum desired stroke for the bundle of strands 5.
FIG. 3 shows, in cross section, a damper according to the invention, where a single piston damper 1 has been shown for ease of reading.
the bundle of metal strands 5 is centered inside the shell 2 which is in alignment with the anchoring tube 4 and the sheath 6 of the cable.
the piston damper is in radial position relative to the cable. This position corresponds to a rest position, in which no vibration has occurred and therefore in which the damper has to attenuate no relative displacement of the bundle of strands 5 with respect to the shell 2, that is to say say in relation to the structure with which the shell is secured.
FIG. 4 shows the same device as in FIG. 3.
the bundle of metal strands 5 has been displaced relative to the shell due to cable vibrations. .
the bundle of strands 5 thus moves until the collar 3 arrives, at the most, in contact with the shell 2 (or until a stroke limiter 11 comes into contact with the shell).
the movement of the bundle of strands 5 is attenuated by the action of the piston damper 1, which moves by means of its ball joint 8 with the clamp 3 and its pivot connection 7 with the shell 2.
the displacement of the piston damper 1 is such that the latter is in a position away from an angle ⁇ of its radial position of rest.
each piston damper undergoes a clean displacement in accordance with the connections it has with the clamp 3 and the shell 2.
Each displacement of the bundle of strands 5 then results in a simultaneous action of each piston damper, in directions corresponding to respective components of the general direction of displacement of the bundle 5.
FIG. 5 shows an advantageous embodiment of the invention, in which three piston dampers (not shown) are connected to the shell 2, in a regular manner, so that their respective axes form, two by two, a angle of 120 °.
the shell 2 of Figure 5 is composed of two distinct parts 2a and 2b, the two shell portions being interconnected for example by means of screws.
Such a shell has the advantage of being easily attached around the bundle of strands 5, and to be easily removable.

Landscapes

Engineering & Computer Science (AREA)
Architecture (AREA)
Civil Engineering (AREA)
Structural Engineering (AREA)
Bridges Or Land Bridges (AREA)
Fluid-Damping Devices (AREA)
Vibration Prevention Devices (AREA)
Control And Safety Of Cranes (AREA)

EP04292022A 2003-09-03 2004-08-10 Dispositif pour amortir les vibration d'un cable et procede d'amortissement associe Expired - Lifetime EP1512794B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR0310420		2003-09-03
FR0310420A FR2859260B1 (fr)	2003-09-03	2003-09-03	Dispositif pour amortir les vibrations d'un cable et procede d'amortissement associe

Publications (2)

Publication Number	Publication Date
EP1512794A1 EP1512794A1 (fr)	2005-03-09
EP1512794B1 true EP1512794B1 (fr)	2006-05-31

Family

ID=34130731

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP04292022A Expired - Lifetime EP1512794B1 (fr)	2003-09-03	2004-08-10	Dispositif pour amortir les vibration d'un cable et procede d'amortissement associe

Country Status (9)

Country	Link
US (1)	US7422190B2 (es)
EP (1)	EP1512794B1 (es)
JP (1)	JP4527427B2 (es)
KR (1)	KR101273641B1 (es)
CN (1)	CN100359204C (es)
AT (1)	ATE328159T1 (es)
DE (1)	DE602004001029T2 (es)
ES (1)	ES2265626T3 (es)
FR (1)	FR2859260B1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2021239221A1 (en)	2020-05-27	2021-12-02	Dywidag-Systems International Gmbh	Damping arrangement for a cable

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
KR100674594B1 (ko) *	2005-09-21	2007-01-25	한양대학교 산학협력단	사장교 케이블의 진동저감유니트 및 그 진동저감방법
CN101260646B (zh) *	2008-04-14	2010-10-13	李有为	大跨桥梁抗风水下阻尼系统
CN101709567B (zh) *	2009-10-14	2011-05-18	中铁大桥局集团武汉桥梁科学研究院有限公司	一种斜拉索刚性连接空间杠杆质量减振装置
GB0919682D0 (en) *	2009-11-11	2009-12-23	Hi Lex Cable System Company Ltd	Damper
BR112012019801B1 (pt) *	2009-12-23	2020-04-07	Vsl Int Ag	dispositivo amortecedor e estrutura de engenharia civil
FR3012193B1 (fr)	2013-10-23	2015-12-18	Soletanche Freyssinet	Dispositif d'amortissement de vibrations d'un cable
CN103572857B (zh) *	2013-10-28	2016-02-10	清华大学	一种电磁调谐质量阻尼器及其设计方法
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.
CN104612052B (zh) *	2015-02-04	2016-03-30	河南省交通规划设计研究院股份有限公司	用于桥梁拱肋吊杆的锚固装置
FR3033803B1 (fr) *	2015-03-16	2021-01-29	Soletanche Freyssinet	Dispositif d'amortissement de vibrations d'un cable
RU2618307C2 (ru) *	2015-07-01	2017-05-03	Общество с ограниченной ответственностью "Следящие тест-системы"	Ванта моста
CN105780640B (zh) *	2015-12-04	2017-05-31	东南大学	一种可复位形状记忆合金多维隔震支座
FR3049030B1 (fr) *	2016-03-18	2018-08-31	Soletanche Freyssinet	Dispositif ameliore pour l'amortissement de vibrations d'un cable, notamment d'un cable de haubanage
CN108221669B (zh) *	2018-02-09	2023-10-20	柳州欧维姆机械股份有限公司	一种内置式缆索减振装置
CN111364347A (zh) *	2020-03-12	2020-07-03	江苏法尔胜缆索有限公司	一种斜拉索内置式阻尼结构及其安装方法
CN112942103B (zh) *	2021-03-29	2024-11-15	深圳大学	拉索减振装置
CN117988441A (zh) *	2024-03-13	2024-05-07	上海建工四建集团有限公司	一种拉索混凝土悬挑结构

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EP1035350A1 (en)	1999-03-12	2000-09-13	VSL International AG	Method and device for damping oscillations and vibrations of cables
US6292967B1 (en) *	1999-09-14	2001-09-25	Construction Technology Laboratories, Inc.	TMD-damped stay cable and method and TMD
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FR2832479B1 (fr) *	2001-11-19	2006-05-26	Maurer Friedrich Soehne	Dispositif d'amortissement pour cable
EP1411170A1 (de) *	2002-10-15	2004-04-21	Fatzer Ag	Zugelement, insbesondere zur Aufhängung von Bauteilen, sowie ein Verfahren zu dessen Herstellung

2003
- 2003-09-03 FR FR0310420A patent/FR2859260B1/fr not_active Expired - Lifetime
2004
- 2004-03-30 JP JP2004101505A patent/JP4527427B2/ja not_active Expired - Fee Related
- 2004-08-10 DE DE602004001029T patent/DE602004001029T2/de not_active Expired - Lifetime
- 2004-08-10 AT AT04292022T patent/ATE328159T1/de not_active IP Right Cessation
- 2004-08-10 ES ES04292022T patent/ES2265626T3/es not_active Expired - Lifetime
- 2004-08-10 EP EP04292022A patent/EP1512794B1/fr not_active Expired - Lifetime
- 2004-08-31 US US10/930,269 patent/US7422190B2/en not_active Expired - Lifetime
- 2004-09-02 KR KR1020040070024A patent/KR101273641B1/ko not_active Expired - Lifetime
- 2004-09-03 CN CNB2004100769496A patent/CN100359204C/zh not_active Expired - Lifetime

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2021239221A1 (en)	2020-05-27	2021-12-02	Dywidag-Systems International Gmbh	Damping arrangement for a cable

Also Published As

Publication number	Publication date
EP1512794A1 (fr)	2005-03-09
DE602004001029T2 (de)	2007-01-04
US7422190B2 (en)	2008-09-09
CN100359204C (zh)	2008-01-02
ATE328159T1 (de)	2006-06-15
FR2859260B1 (fr)	2006-02-24
KR101273641B1 (ko)	2013-06-11
US20050072895A1 (en)	2005-04-07
CN1590649A (zh)	2005-03-09
KR20050024605A (ko)	2005-03-10
FR2859260A1 (fr)	2005-03-04
DE602004001029D1 (de)	2006-07-06
JP4527427B2 (ja)	2010-08-18
ES2265626T3 (es)	2007-02-16
JP2005076447A (ja)	2005-03-24
HK1071779A1 (en)	2005-07-29

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Publication	Publication Date	Title
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EP1512794B1 - Dispositif pour amortir les vibration d'un cable et procede d'amortissement associe - Google Patents

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