Instability of Loose Sand under Drained Conditions

A type of prefailure instability which occurs under fully drained conditions is studied in this paper. It is observed experimentally that when a specimen is sheared along a drained stress path involving a decrease in effective mean stress, it becomes unstable after the stress path crosses an instabi...

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Bibliographic Details
Published in:Journal of geotechnical and geoenvironmental engineering 2012-02, Vol.138 (2), p.207-216
Main Authors: Chu, J, Leong, W. K, Loke, W. L, Wanatowski, D
Format: Article
Language:English
Subjects:
Analogies
Applied sciences
Buildings. Public works
Exact sciences and technology
Failure mechanisms
Geoenvironmental engineering
Geotechnics
Instability
Sand
Soil (material)
Soil investigations. Testing
Stability
Stresses
TECHNICAL PAPERS
Water effect, drainage, ground water lowering, filtration
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Summary:A type of prefailure instability which occurs under fully drained conditions is studied in this paper. It is observed experimentally that when a specimen is sheared along a drained stress path involving a decrease in effective mean stress, it becomes unstable after the stress path crosses an instability line. The instability occurring under drained conditions is different from the type observed under undrained conditions. The differences and similarities between the two types of instability are elaborated. The practical implication of the study in analyzing the failure mechanisms of granular soil slope is also discussed.
ISSN:1090-0241
1943-5606
DOI:10.1061/(ASCE)GT.1943-5606.0000574