Location

St. Louis, Missouri

Presentation Date

12 Mar 1991, 2:30 pm - 3:30 pm

Abstract

The effects of stress state and stress ratio on the maximum shear modulus, obtained from in-situ downhole and crosshole shear wave velocity tests were evaluated in the model tests. The hydraulic gradient similitude method was used to increase and control the model stress level. The downhole and crosshole shear waves were generated and received along the principal stress axes using piezoceramic bender elements. It was found that (1) the shear wave velocity is dependent upon the individual principal stresses in the directions of wave propagation and particle motion, and (2) only the stress ratio defined in the plane of wave propagation has some effects on the shear wave velocity.

Department(s)

Civil, Architectural and Environmental Engineering

Meeting Name

2nd International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Publisher

University of Missouri--Rolla

Document Version

Final Version

Rights

© 1991 University of Missouri--Rolla, All rights reserved.

Creative Commons Licensing

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Stress State and Stress Ratio Effects in Downhole and Crosshole Shear Wave Velocity Tests on Sands

St. Louis, Missouri

The effects of stress state and stress ratio on the maximum shear modulus, obtained from in-situ downhole and crosshole shear wave velocity tests were evaluated in the model tests. The hydraulic gradient similitude method was used to increase and control the model stress level. The downhole and crosshole shear waves were generated and received along the principal stress axes using piezoceramic bender elements. It was found that (1) the shear wave velocity is dependent upon the individual principal stresses in the directions of wave propagation and particle motion, and (2) only the stress ratio defined in the plane of wave propagation has some effects on the shear wave velocity.