Abstract
Vibrations of stay cables are often induced by wind because of their aerodynamic instability. They must be suppressed to prevent cable fatigue and to allay passenger fear. Although various countermeasures have been developed, totally effective one has not yet been established. The authors have proposed a new vibration reduction method called “Vibration modes changing method” using a permanent magnet. A magnet installed near the end of the cable changes the vibration modes passively by repeating motions of constraining and releasing cables. With this method, growth of the unstable fundamental vibration mode is prevented by dissipating energy of higher stable modes. Comparing with other methods, it is expected to improve low temperature characteristics, maintenance and manufacturing cost. Considering only unstable fundamental vibration modes, the vibration analyses were carried out taking account of gap effects. The results agree well with wind tunnel tests and the design conditions were obtained.
| Original language | English |
|---|---|
| Pages (from-to) | 1799-1806 |
| Number of pages | 8 |
| Journal | Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C |
| Volume | 67 |
| Issue number | 658 |
| DOIs | |
| Publication status | Published - 2001 Jan 1 |
| Externally published | Yes |
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Keywords
- Cable-Stayed Bridge
- Damping
- Permanent Magnet
- Self-Excited Vibration
- Stay Cable
- Vibration Control
- Vibration Mode
- Wind Tunnel Test
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering
Cite this
A Study on Countermeasures against Wind-Induced Cable Vibrations in Cable-Stayed Bridge by Changing Vibration Modes : 2nd Report, Cable Vibration Analyses Taking Account of Gap Effect. / Nakano, Ryuji; Kaneko, Shigehiko; Katamura, Ryuta.
In: Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, Vol. 67, No. 658, 01.01.2001, p. 1799-1806.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A Study on Countermeasures against Wind-Induced Cable Vibrations in Cable-Stayed Bridge by Changing Vibration Modes
T2 - 2nd Report, Cable Vibration Analyses Taking Account of Gap Effect
AU - Nakano, Ryuji
AU - Kaneko, Shigehiko
AU - Katamura, Ryuta
PY - 2001/1/1
Y1 - 2001/1/1
N2 - Vibrations of stay cables are often induced by wind because of their aerodynamic instability. They must be suppressed to prevent cable fatigue and to allay passenger fear. Although various countermeasures have been developed, totally effective one has not yet been established. The authors have proposed a new vibration reduction method called “Vibration modes changing method” using a permanent magnet. A magnet installed near the end of the cable changes the vibration modes passively by repeating motions of constraining and releasing cables. With this method, growth of the unstable fundamental vibration mode is prevented by dissipating energy of higher stable modes. Comparing with other methods, it is expected to improve low temperature characteristics, maintenance and manufacturing cost. Considering only unstable fundamental vibration modes, the vibration analyses were carried out taking account of gap effects. The results agree well with wind tunnel tests and the design conditions were obtained.
AB - Vibrations of stay cables are often induced by wind because of their aerodynamic instability. They must be suppressed to prevent cable fatigue and to allay passenger fear. Although various countermeasures have been developed, totally effective one has not yet been established. The authors have proposed a new vibration reduction method called “Vibration modes changing method” using a permanent magnet. A magnet installed near the end of the cable changes the vibration modes passively by repeating motions of constraining and releasing cables. With this method, growth of the unstable fundamental vibration mode is prevented by dissipating energy of higher stable modes. Comparing with other methods, it is expected to improve low temperature characteristics, maintenance and manufacturing cost. Considering only unstable fundamental vibration modes, the vibration analyses were carried out taking account of gap effects. The results agree well with wind tunnel tests and the design conditions were obtained.
KW - Cable-Stayed Bridge
KW - Damping
KW - Permanent Magnet
KW - Self-Excited Vibration
KW - Stay Cable
KW - Vibration Control
KW - Vibration Mode
KW - Wind Tunnel Test
UR - http://www.scopus.com/inward/record.url?scp=85024457286&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85024457286&partnerID=8YFLogxK
U2 - 10.1299/kikaic.67.1799
DO - 10.1299/kikaic.67.1799
M3 - Article
AN - SCOPUS:85024457286
VL - 67
SP - 1799
EP - 1806
JO - Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
JF - Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
SN - 0387-5024
IS - 658
ER -