쌍둥이 인접구조물의 진동 제어를 위한 비대칭 지진격리 연결 제어시스템의 매개변수연구

• Published in: 한국안전학회지 Vol. 37; no. 3; pp. 45 - 51
• Main Authors: 김다위, David Kim, 박원석, Wonsuk Park, 옥승용, Seung-yong Ok
• Format: Journal Article
• Language: Korean
• Published: 한국안전학회 30.06.2022
• Subjects: adjacent twin buildings; asymmetric base-isolation coupling control system; seismic isolation; vibration control; 안전공학; adjacent twin buildings; asymmetric base-isolation coupling control system; vibration control; seismic isolation
• ISSN: 1738-3803; 2383-9953

This paper focuses on a recently proposed asymmetric base-isolation coupling control system (ABiCS) for the vibration control of adjacent twin buildings. The ABiCS consists of inter-story diagonal dampers, a connecting damper between the two buildings, and a seismic isolation device at the base floor of one building. To investigate the control characteristics of ABiCS, a parametric study was performed by numerically simulating the 20-story twin buildings. In the parametric study, the control capacities of the inter-story diagonal dampers, connecting damper, and seismic isolation device were considered as varying parameters. The parametric study results indicate that the connecting damper between the two buildings reduces the responses of both buildings only at optimal or near-optimal capacity. In addition, adjusting the stiffness of the base isolation is found to be the most effective method for improving seismic performance and achieving cost-effectiveness. Accordingly, we presented a scenario-based performance improvement approach in which reducing the stiffness of the base isolation device could be an effective technique to improve the seismic performance of both buildings. However, note that checking the maximum allowable displacement of the base isolation device is essential.