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M. Ikenaga¹, K. Ikago² and N. Inoue¹

¹Graduate School of Engineering, Tohoku University, Sendai, Japan
²International Research Institute of Disaster Science, Tohoku University, Sendai, Japan

doi:10.4203/ccp.102.173

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M. Ikenaga, K. Ikago, N. Inoue, "A Study of a Base Isolated Structure with Complex Damping for Displacement Control Design", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 173, 2013. doi:10.4203/ccp.102.173

Keywords: displacement control design, base isolation, rate-independent damper.

Summary

A conventional rate-dependent damper is equipped with a relief valve to restrict an excessively large damping force being generated regardless of the response displacement. The equivalent damping coefficient deteriorates when the ground motion is severe and the relief valve is activated, whereas the damping coefficient is kept large when the input ground motion is moderate and the relief valve is inactive. In this paper an ideal rate-independent damper is proposed that generates a damping force according to the response displacement for the effective displacement control in a base-isolation system. Comparisons with base-isolation systems containing conventional rate-dependent dampers and rate-independent dampers illustrate the effectiveness of the proposed damper for the reduction of floor response acceleration without deterioration of the response displacement.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 102 PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: Paper 173 A Study of a Base Isolated Structure with Complex Damping for Displacement Control Design M. Ikenaga¹, K. Ikago² and N. Inoue¹ ¹Graduate School of Engineering, Tohoku University, Sendai, Japan ²International Research Institute of Disaster Science, Tohoku University, Sendai, Japan doi:10.4203/ccp.102.173 purchase the full-text of this paper Full Bibliographic Reference for this paper M. Ikenaga, K. Ikago, N. Inoue, "A Study of a Base Isolated Structure with Complex Damping for Displacement Control Design", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 173, 2013. doi:10.4203/ccp.102.173 Keywords: displacement control design, base isolation, rate-independent damper. Summary A conventional rate-dependent damper is equipped with a relief valve to restrict an excessively large damping force being generated regardless of the response displacement. The equivalent damping coefficient deteriorates when the ground motion is severe and the relief valve is activated, whereas the damping coefficient is kept large when the input ground motion is moderate and the relief valve is inactive. In this paper an ideal rate-independent damper is proposed that generates a damping force according to the response displacement for the effective displacement control in a base-isolation system. Comparisons with base-isolation systems containing conventional rate-dependent dampers and rate-independent dampers illustrate the effectiveness of the proposed damper for the reduction of floor response acceleration without deterioration of the response displacement. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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