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Shock and Vibration
Volume 19, Issue 6, Pages 1327-1339
http://dx.doi.org/10.3233/SAV-2012-0675

Suitable Friction Sliding Materials for Base Isolation of Masonry Buildings

Radhikesh P. Nanda,1 Pankaj Agarwal,2 and Manish Shrikhande2

1Department of Civil Engineering, National Institute of Technology Durgapur, Durgapur, India
2Department of Earthquake Engineering, Indian Institute of Technology Roorkee, Roorkee, India

Received 30 May 2010; Revised 15 November 2011

Copyright © 2012 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A feasibility study of friction base isolation system for seismic protection has been performed. Four different sliding interfaces, namely, green marble/High Density Poly Ethylene (HDPE), green marble/green marble, green marble/geosynthetic, and green marble/ rubber layers have been studied through experimental and analytical investigations. The experimental investigations show that the coefficient of friction values of these interfaces lies in the desirable range for seismic protection, i.e., 0.05 to 0.15. The analytical investigation reveals that most of these sliding interfaces are effective in reducing spectral accelerations up to 50% and the sliding displacement is restricted within plinth projection of 75 mm (3 in). Green marble and geosynthetic are found to be better alternatives for use in friction isolation system with equal effectiveness of energy dissipation and limiting the earthquake energy transmission to super structure during strong earthquake leading to a low cost, durable solution for earthquake protection of masonry buildings.