In this study, in order to investigate the effectiveness of tuned liquid damper (TLD) for the seismic performance enhancement of the existing reinforced concrete (RC) apartment structure which is not seismically designed, shaking table test was conducted for the small scale five story RC structure with TLD. TLD model was constructed to have the frequency tuned to the first modal frequency of the structure, 2% mass ratio of the first modal mass, and 0.08 liquid depth ratio. White noise with 0.2~5Hz frequency bandwidth and harmonic load tests were performed using the shaking table at Korea Institute of Machinery and Materials, and the displacement and absolute acceleration of each floor were measured. Test results indicate that more than 30% seismic responses reduction can be achieved using TLD for RC structure under white noise and harmonic load.

• 우성식(단국대학교 대학원 건축공학과 석사과정) | Woo, Seong Sik Corresponding author
• 이상현(단국대학교 건축공학과 전임강사, 공학박사) | Lee, Sang Hyun
• 정란(단국대학교 건축대학 건축공학과 교수, 공학박사) | Chung, Lan