Location

St. Louis, Missouri

Session Start Date

4-26-1981

Session End Date

5-3-1981

Abstract

One of the major considerations in the design of offshore structures is the effect of wave action on the foundation. This requires a study of the effects of cyclic loading on the soil properties. The anisotropic nature of clay soils, which results from sedimentation followed by K0 consolidation, plays an important role in its dynamic as well as its static behavior. An experimental program was undertaken to determine the trends in behavior of clays subjected to large strain cyclic loading. Thin long hollow cylinders of isotropic, and normally K0 consolidated and over consolidated clays, with varying degrees of anisotropy and differing stress-strain characteristics were cyclicly stressed at periods of 20 to 40 seconds using different levels of stress. Damping, modulus degradation, and increasing strain values are compared with stress, cycle number and consolidation pressure. Test results are fit to a well-known and widely used mathematical model.

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

Behavior of Clays Subjected to Slow Cyclic Loading and Large Strains

St. Louis, Missouri

One of the major considerations in the design of offshore structures is the effect of wave action on the foundation. This requires a study of the effects of cyclic loading on the soil properties. The anisotropic nature of clay soils, which results from sedimentation followed by K0 consolidation, plays an important role in its dynamic as well as its static behavior. An experimental program was undertaken to determine the trends in behavior of clays subjected to large strain cyclic loading. Thin long hollow cylinders of isotropic, and normally K0 consolidated and over consolidated clays, with varying degrees of anisotropy and differing stress-strain characteristics were cyclicly stressed at periods of 20 to 40 seconds using different levels of stress. Damping, modulus degradation, and increasing strain values are compared with stress, cycle number and consolidation pressure. Test results are fit to a well-known and widely used mathematical model.