Location

San Diego, California

Session Start Date

5-24-2010

Session End Date

5-29-2010

Abstract

The resonant frequency of the foundation-soil system depends on several factors and nonhomogeniety of soil is one of the important factors that include the effect of saturation. In the present investigation, the effect of saturation and location of rigid concrete base on the resonant frequency of foundation-soil system was determined by conducting vertical vibration test on model footings resting on the surface of finite dry sand stratum as well as on finite saturated sand stratum underlain by rigid concrete base. On the basis of the experimental investigation, it was concluded that the presence of rigid base at shallow depth decreases the resonant frequency marginally where as the displacement amplitude increases marginally that obtained on finite dry sand stratum, corresponding to ratio H/B = 0.5. The displacement amplitude becomes significantly larger for the case of finite saturated sand stratum, when H/B increases to 3.0.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

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

Meeting Name

Fifth Conference

Publisher

Missouri University of Science and Technology

Publication Date

5-24-2010

Document Version

Final Version

Rights

© 2010 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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May 24th, 12:00 AM May 29th, 12:00 AM

Resonant Frequency of Model Footings Resting on Finite Saturated Sand Stratum

San Diego, California

The resonant frequency of the foundation-soil system depends on several factors and nonhomogeniety of soil is one of the important factors that include the effect of saturation. In the present investigation, the effect of saturation and location of rigid concrete base on the resonant frequency of foundation-soil system was determined by conducting vertical vibration test on model footings resting on the surface of finite dry sand stratum as well as on finite saturated sand stratum underlain by rigid concrete base. On the basis of the experimental investigation, it was concluded that the presence of rigid base at shallow depth decreases the resonant frequency marginally where as the displacement amplitude increases marginally that obtained on finite dry sand stratum, corresponding to ratio H/B = 0.5. The displacement amplitude becomes significantly larger for the case of finite saturated sand stratum, when H/B increases to 3.0.