Location

San Diego, California

Session Start Date

3-26-2001

Session End Date

3-31-2001

Abstract

The Spectral analysis of surface waves (SASW) method has been successfully used in evaluation of elastic moduli profiles of layered systems. Recently, there have been attempts to implement the SASW method and surface waves in evaluation of damping/attenuation properties of layered systems. Results of numerical simulations are presented for the purpose of explanation of effects of damping properties of individual layers on the overall attenuation properties, as measured during actual SASW testing. A parametric study conducted examines effects of a number of parameters, including the system stratification that may lead to dominant wave propagation in terms of higher Rayleigh modes. Correlations between the overall attenuation characteristics and soil stratification, effect of higher Rayleigh modes, damping characteristics of individual layers, was found to be similar to correlations for the surface wave velocity.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Fourth Conference

Publisher

University of Missouri--Rolla

Publication Date

3-26-2001

Document Version

Final Version

Rights

© 2001 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Mar 26th, 12:00 AM Mar 31st, 12:00 AM

Surface Waves in Evaluation of Damping in Layered Systems

San Diego, California

The Spectral analysis of surface waves (SASW) method has been successfully used in evaluation of elastic moduli profiles of layered systems. Recently, there have been attempts to implement the SASW method and surface waves in evaluation of damping/attenuation properties of layered systems. Results of numerical simulations are presented for the purpose of explanation of effects of damping properties of individual layers on the overall attenuation properties, as measured during actual SASW testing. A parametric study conducted examines effects of a number of parameters, including the system stratification that may lead to dominant wave propagation in terms of higher Rayleigh modes. Correlations between the overall attenuation characteristics and soil stratification, effect of higher Rayleigh modes, damping characteristics of individual layers, was found to be similar to correlations for the surface wave velocity.