Abstract
Base isolation is found effective in reducing torsional response of structures with mass eccentricity when subjected to earthquakes. In this study, dynamic characteristics of an eccentric five-storey benchmark model, isolated with laminated rubber bearings (LRB) and lead core rubber bearings (LCRB), were examined using a shaker table and four different ground motions. The earthquake-resistant performance of LRB and LCRB isolators was evaluated. It was observed that both transverse and torsional responses were significantly reduced with the addition of an LRB or LCRB isolated system regardless of ground motion input. However, the LRB was identified to be more effective than LCRB in reducing relative torsional angle, model relative displacements, accelerations and angular accelerations, and therefore, provided a better protection of the superstructure and its contents.
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References
1 Skinne R. I, Robinson W. H, and McVerry G. H, “Introduction to seismic isolation”, (John Wiley & Sons. 1993).
2 D.J. Dowrick: Earthquake Resistant Design and Risk Reduction. John Wiley & Sons, Inc. (2009)
3 Kelly J. M, “New applications and R&D for isolated civil buildings in the united states”, in Proceedings of the international post-smart conference seminar, Taormina, Sicily, Italy, p69-86, August 25-27, 1997.
4 Samali B, Li J, Mayol E and Wu H, “System identification of a five storey benchmark model using modal analysis. Proceedings of international conference on applications of modal analysis, Gold Coast, Queensland, Australia, paper 12. 1999.
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Wu, H. (2011). Torsional Response of Structure with Mass Eccentricity. In: Proulx, T. (eds) Rotating Machinery, Structural Health Monitoring, Shock and Vibration, Volume 5. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-9428-8_27
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DOI: https://doi.org/10.1007/978-1-4419-9428-8_27
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