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Shock and Vibration
Volume 2014 (2014), Article ID 432760, 15 pages
Research Article

Excellent Performance of Earth Dams under Resonance Motion Using Isolator Damping Layer

Engineering Seismology and Earthquake Engineering Research Group (e-SEER), Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia

Received 20 February 2014; Accepted 22 April 2014; Published 25 May 2014

Academic Editor: Alicia Gonzalez-Buelga

Copyright © 2014 Behrouz Gordan and Azlan Adnan. 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.


The effect of blanket layer using isolator damping layer (IDL) between river sand foundation and short embankment to remove damage under severe earthquake was investigated in the present study. In case of numerical analysis by ANSYS program, dominant frequency (DF) was computed by free vibration analysis. Soil mechanic tests for thirteen samples to design IDL formula were carried out. In terms of critical condition for earthquake effect such as resonance, five physical small models were tested using vibrator table under the dominant frequency with scale parameter 1/100. As a result, dam was significantly damaged without blanket layer IDL. In order to reduce damage, the best performance was observed using blanket layer (IDL) when this layer was expanded below the reservoir region. The reinforced thickness layer size is one-fourth of dam height. This method is a novel suggestion for earth dam design in seismic zone.