Location

St. Louis, Missouri

Session Start Date

4-26-1981

Session End Date

5-3-1981

Abstract

To investigate the dynamic properties of soils under earthquake loading conditions, a series of cyclic triaxial compression tests vas carried out on undisturbed saturated samples of cohesive soils from Tianjin. It has come to the conclusion that variation of damping ratio, as well as shear modulus, with strain amplitude may be expressed by an empirical formula. Its normalized form can be shown by a family of curves or a band zone with shrunken ends. New empirical equations used for evaluating elastic or initial shear modulus G0 and maximum shear stress τmax have been suggested. For the two parameters, some comparisons between field and laboratory test values and between the results of cyclic and static triaxial compression tests under conditions of the same loading levels have been made.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

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

Meeting Name

First Conference

Publisher

University of Missouri--Rolla

Publication Date

4-26-1981

Document Version

Final Version

Rights

© 1981 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 26th, 12:00 AM May 3rd, 12:00 AM

Shear Moduli and Damping of Cohesive Soils under Earthquake Loads

St. Louis, Missouri

To investigate the dynamic properties of soils under earthquake loading conditions, a series of cyclic triaxial compression tests vas carried out on undisturbed saturated samples of cohesive soils from Tianjin. It has come to the conclusion that variation of damping ratio, as well as shear modulus, with strain amplitude may be expressed by an empirical formula. Its normalized form can be shown by a family of curves or a band zone with shrunken ends. New empirical equations used for evaluating elastic or initial shear modulus G0 and maximum shear stress τmax have been suggested. For the two parameters, some comparisons between field and laboratory test values and between the results of cyclic and static triaxial compression tests under conditions of the same loading levels have been made.