Location

San Diego, California

Session Start Date

5-24-2010

Session End Date

5-29-2010

Abstract

The present paper describes a new triaxial apparatus which allows the measurement of low strain stiffness by means of both bender elements and resonant column test. In a previous paper Squeglia et al. (2009) described the innovative use of bender elements as receivers for the measurement of shear wave velocity. The proposed technique is synthetically described with the further development of apparatus which allow to perform resonant column test during a triaxial test. Since the apparatus has not been designed as a resonant column device, some critical points have been dealt with. Some tests have been dedicated to solve the problem of apparatus calibration, in particular it was not clear which type of restraint was introduced by some mechanical details concerning the ram for application of axial load. After calibration, some results have been presented. Tests carried out with the new apparatus have been compared with results of tests carried out with a Drnevich type resonant column apparatus showing a good agreement.

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

Innovative Triaxial/Resonant Column Equipment

San Diego, California

The present paper describes a new triaxial apparatus which allows the measurement of low strain stiffness by means of both bender elements and resonant column test. In a previous paper Squeglia et al. (2009) described the innovative use of bender elements as receivers for the measurement of shear wave velocity. The proposed technique is synthetically described with the further development of apparatus which allow to perform resonant column test during a triaxial test. Since the apparatus has not been designed as a resonant column device, some critical points have been dealt with. Some tests have been dedicated to solve the problem of apparatus calibration, in particular it was not clear which type of restraint was introduced by some mechanical details concerning the ram for application of axial load. After calibration, some results have been presented. Tests carried out with the new apparatus have been compared with results of tests carried out with a Drnevich type resonant column apparatus showing a good agreement.