윤하중을 받는 교량구조물의 수직방향 진동제어 = Vertical Vibration Control of Bridges under Moving Loads

다국어 초록 (Multilingual Abstract)

This paper is concerned with an experimental research to control vertical vibration caused by moving loads specially in cable-stayed bridges which tend to be structurally flexible. Experimenting on a reduced structure modelled on Seohae Grand Bridge, we inflicted a reduced form of Elcentro wave on the model structure to a proper proportion. On the center of its middle span, we placed a shear type MR damper which was to control its vibration and also acquire its structural responses such as displacement and acceleration at the same site. The experiments concerning controlling vibration were performed according to a variety of theories including uncontrol, passive control, on-ff control, and Lyapunov stability theory. Its control performance was evaluated in terms of the peak absolute displacements and the peak absolute accelerations which differ from each different experiment method. Among all the methods applied in this paper, Lyapunov control method turned out to be the most effective, and the passive on control and then the passive-off control method were followed in effectiveness. It was noteworthy that Lyapunov control method was specially effective in the vibration control employing a semi-active damper such MR damper in terms of economy and efficiency.

목차 (Table of Contents)

• 1. 서론
• 2. Lyapunov 안정도 이론에 의한 제어 알고리즘
• 3. MR 감쇠기를 이용한 진동제어실험
• 4. 실험의 결과 및 성능 평가
• 5. 결론