사장교 케이블 진동저감을 위한 능동제어시스템 = Active Control System for Mitigation of Cable Vibration in Cable-Stayed Bridges

다국어 초록 (Multilingual Abstract)

Rain-wind induced cable vibration can cause serious problems in cable-stayed bridge. External dampers attached to the cables have become widely accepted as an effective means for stay-cable vibration suppression. For very long stay-cables, however, such damper systems are rendered ineffective, as the dampers need be attached near the end of cables for aesthetic reasons. A recent study by the authors proposed that a movable anchorage system is replaced direct fixed support of the cable with a support through a bearing and damper. This paper extends the previous work by adding active control system to mitigate the cable vibration. The response of a cable with the proposed active control system is obtained and then compared to those of the cable with and without an external passive damper. The results show that the active control system can provide superior protection than the passive control system for a cable vibration.

참고문헌 (Reference)

1 "특수 교량 케이블 부재의 진동 저감 기준 연구" 한국도로공사 도로연구소 2001

2 "사장교의 케이블 진동저감을 위한 수동 제어시스템" 대한토목학회 26 (26): 881-885, 2006

3 "Zur Frage der Seilschwingungen und der Seildampfung" 1982

4 "Vibrations of a Taut Cable with an External Damper. J. Applied Mech." ASME 67 : 772-776, 2000

5 "Semiactive Damping of Stay Cables: a Preliminary Study" 417-423, 1999

6 "Full-Scale Measurements of Stay Cable Vibration" 963-970, 1999

7 "Free Vibrations of Taut Cable with Attached Damper" 128 (128): 1062-1071, 2002

8 "Estimation Curve for Modal Damping in Stay Cables with Viscous Damper" 19931961～1979

9 "Cables in Trouble" 1988