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http://dx.doi.org/10.5000/EESK.2006.10.3.085

Optimal Design of Linear Viscous Damping System for Vibration Control of Adjacent Building Structures  

Park, Kwan-Soon (동국대학교 건축공학부)
Ok, Seung-Yong (서울대학교 교량설계핵심기술연구단)
Koh, Hyun-Moo (서울대학교 지구환경시스템공학부)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.10, no.3, 2006 , pp. 85-100 More about this Journal
Abstract
This paper proposes an optimal design method of linear viscous dampers for the seismic performance of two adjacent structures with different heights. Accordingly, connection method using diagonal bracing between two floors and connection method between two structures are considered, and the effectiveness of the latter method is confirmed through the comparison of the frequency response functions with respect to damping capacity. Moreover, optimal damping to minimize the response of the adjacent structures in the frequency domain is found. The sensitivity of natural frequency and modal damping according to the damper capacity at each floor is obtained for the optimally designed system. From the sensitivity analysis, the modal damping is evaluated to be very sensitive to the damper installed at higher floor. Therefore, sensitivity-based damping distribution method is proposed. Diagonal bracing connection method, uniform distribution method and sensitivity-based distribution method are compared to each other in terms of seismic performance. The comparative results demonstrate that the proposed method is an effective seismic design method for the adjacent structures.
Keywords
adjacent structures; linear viscous damper; optimal damping capacity; seismic response control; sensitivity; structural pounding;
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