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Advances in Acoustics and Vibration
Volume 2011, Article ID 150310, 8 pages
http://dx.doi.org/10.1155/2011/150310
Research Article

Horizontal Acoustic Barriers for Protection from Seismic Waves

1Institute for Problems in Mechanics, Russian Academy of Sciences, Moscow 119526, Russia
2Department Strength of Materials, Moscow State University of Civil Engineering, Moscow 129337, Russia

Received 7 May 2011; Accepted 10 June 2011

Academic Editor: Emil Manoach

Copyright © 2011 Sergey V. Kuznetsov and Aybek E. Nafasov. 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

The basic idea of a seismic barrier is to protect an area occupied by a building or a group of buildings from seismic waves. Depending on nature of seismic waves that are most probable in a specific region, different kinds of seismic barriers can be suggested. Herein, we consider a kind of a seismic barrier that represents a relatively thin surface layer that prevents surface seismic waves from propagating. The ideas for these barriers are based on one Chadwick's result concerning nonpropagation condition for Rayleigh waves in a clamped half-space, and Love's theorem that describes condition of nonexistence for Love waves. The numerical simulations reveal that to be effective the length of the horizontal barriers should be comparable to the typical wavelength.