A study on countermeasures against wind-induced cable vibrations in cable-stayed bridge by changing vibration modes: 4th report, experimental application to an actual cable

Ryuji Nakano, Shigehiko Kaneko, Ryuta Katamura

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In order to suppress vibrations of stay cables in cable-stayed bridges, the authors developed a new vibration reduction method called "Changing vibration modes method" using a permanent magnet. With this method, growth of the unstable fundamental vibration mode is prevented by dissipating energy of higher stable modes. The authors have confirmed in former reports that the proposed method effectively reduces the self induced cable vibrations by both theoretical analyses and wind tunnel tests and design method of the device was proposed. In this report, first, the design process of a prototype of a control device is described. Second, higher mode vibrations generated by the action of the device were confirmed from the results of free vibration tests. Finally, efficiency of the proposed countermeasure against rain wind induced vibrations of an actual cable is clarified.

Original languageEnglish
Pages (from-to)2233-2240
Number of pages8
JournalNippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume68
Issue number8
Publication statusPublished - 2002 Aug 1
Externally publishedYes

Fingerprint

Cable stayed bridges
Cables
Permanent magnets
Wind tunnels
Rain

Keywords

  • Cable-Stayed Bridge
  • Damping
  • Permanent Magnet
  • Self-Excited Vibration
  • Stay Cable
  • Vibration Control
  • Vibration Mode

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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abstract = "In order to suppress vibrations of stay cables in cable-stayed bridges, the authors developed a new vibration reduction method called {"}Changing vibration modes method{"} using a permanent magnet. With this method, growth of the unstable fundamental vibration mode is prevented by dissipating energy of higher stable modes. The authors have confirmed in former reports that the proposed method effectively reduces the self induced cable vibrations by both theoretical analyses and wind tunnel tests and design method of the device was proposed. In this report, first, the design process of a prototype of a control device is described. Second, higher mode vibrations generated by the action of the device were confirmed from the results of free vibration tests. Finally, efficiency of the proposed countermeasure against rain wind induced vibrations of an actual cable is clarified.",
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AU - Katamura, Ryuta

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AB - In order to suppress vibrations of stay cables in cable-stayed bridges, the authors developed a new vibration reduction method called "Changing vibration modes method" using a permanent magnet. With this method, growth of the unstable fundamental vibration mode is prevented by dissipating energy of higher stable modes. The authors have confirmed in former reports that the proposed method effectively reduces the self induced cable vibrations by both theoretical analyses and wind tunnel tests and design method of the device was proposed. In this report, first, the design process of a prototype of a control device is described. Second, higher mode vibrations generated by the action of the device were confirmed from the results of free vibration tests. Finally, efficiency of the proposed countermeasure against rain wind induced vibrations of an actual cable is clarified.

KW - Cable-Stayed Bridge

KW - Damping

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