This paper aims to prove the effectiveness of MR damper as a smart control device when controlling the earthquake invoked transverse vibration of a two-span simple bridge. Applying a 40% of Kobe earthquake and a 120% of El-centro on a target structure, experiments were performed under two conditions: passive on (current on) and Lyapunov control algorithm embedded. MR damper's control performance was analyzed and contrasted under each different condition. It was concluded that MR damper was effective in controlling the vibration of the bridge.

• 허광희(건양대학교 건설환경공학과 교수, 공학박사) | Heo, Gawng Hee
• 전승곤(충남대학교 토목공학과, 박사과정) | Jeon, Seung Gon
• 이진옥(충남대학교 토목공학과 교수, 공학박사) | Lee, Chin Ok
• 서상구(충남도립청양대학 건설정보과 교수, 공학박사) | Seo, Sang Gu