Elastic shear modulus variations during undrained cyclic loading and subsequent reconsolidation of saturated sandy soil

To evaluate the variations in the elastic shear modulus G0 of saturated sandy soil during consolidation, undrained cyclic loading and reconsolidation, we performed a series of multiple-phased triaxial tests with measurements of shear wave velocity on specimens having different dry densities. At the...

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Published in:Soil dynamics and earthquake engineering (1984) 2019-01, Vol.116, p.476-489
Main Authors: Ueno, Kazuhiro, Kuroda, Seiichiro, Hori, Toshikazu, Tatsuoka, Fumio
Format: Article
Language:English
Subjects:
Anisotropy
Consolidation
Cyclic loads
Effective stress
Materials fatigue
Mechanical properties
Modulus of elasticity
Parameters
S waves
Sandy soils
Saturated soils
Shear loading
Shear modulus
Shear strain
Shear stress
Soils
Stress
Void ratio
Wave velocity
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container_title Soil dynamics and earthquake engineering (1984)
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description To evaluate the variations in the elastic shear modulus G0 of saturated sandy soil during consolidation, undrained cyclic loading and reconsolidation, we performed a series of multiple-phased triaxial tests with measurements of shear wave velocity on specimens having different dry densities. At the same isotropic effective stress, the G0 value during undrained cyclic loading became smaller than that during initial consolidation. For the same effective stress parameter that was found to be relevant to the isotropic and anisotropic stress states, the G0 value at an identical effective stress parameter at isotropic and anisotropic stress states during undrained cyclic loading decreases similarly with an increase in the previous strain amplitude. By reconsolidation to the original effective stress state, the G0 value increased partly due to recovery from the shear-induced damage and partly due to a decrease in the void ratio. The effects of the former factor decreased as the specimen became denser, while the effects of the latter factor increased as the specimen became looser. As a result, compared with the initial value at the end of initial consolidation, the G0 value after reconsolidation of the same specimen became significantly smaller with dense specimens while it became significantly larger with loose specimens.
doi_str_mv 10.1016/j.soildyn.2018.10.041
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source ScienceDirect Journals
subjects Anisotropy
Consolidation
Cyclic loads
Effective stress
Materials fatigue
Mechanical properties
Modulus of elasticity
Parameters
S waves
Sandy soils
Saturated soils
Shear loading
Shear modulus
Shear strain
Shear stress
Soils
Stress
Void ratio
Wave velocity
title Elastic shear modulus variations during undrained cyclic loading and subsequent reconsolidation of saturated sandy soil
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