Effect of cyclic loading on monotonic shear strength of fine-grained soils

Ayfer Erken; B. M. Can Ulker

doi:10.1016/j.enggeo.2006.10.008

Effect of cyclic loading on monotonic shear strength of fine-grained soils

Ayfer Erken^*, B. M. Can Ulker

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

43 Citations (Scopus)

Abstract

In this study the effect of cyclic loads on monotonic shear strength has been studied on torsional apparatus. Tests have been conducted on both reconstituted and undisturbed fine-grained hollow soil specimens. The plasticity index of soils is in the range from 2 to 33 for reconstituted specimens, prepared by dry pluviation, and from 5 to 13 for undisturbed soil specimens. The existence of a critical shear strain level, called yield shear strain, where softening starts, is determined from cyclic tests. The level of cyclic yield strain is ± 0.75% for the reconstituted soil specimens and ± 0.5% for the undisturbed soils. If soil undergoes a cyclic shear strain level below the cyclic yield strain, reduction of monotonic strength of reconstituted and undisturbed specimens is limited, but when cyclic shear strain level is larger than yield strain monotonic strength decreases down to 40% of its initial strength.

Original language	English
Pages (from-to)	243-257
Number of pages	15
Journal	Engineering Geology
Volume	89
Issue number	3-4
DOIs	https://doi.org/10.1016/j.enggeo.2006.10.008
Publication status	Published - 6 Feb 2007
Externally published	Yes

Funding

The research reported herein was supported by the Graduate Research Department of Istanbul Technical University and Ulker Geotechnical Engineering Company. The support is greatly appreciated.

Funders	Funder number
Istanbul Technical University and Ulker Geotechnical Engineering Company

Keywords

Bearing capacity failure
Post-cyclic strength
Softening
Yield strain

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10.1016/j.enggeo.2006.10.008

Cite this

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abstract = "In this study the effect of cyclic loads on monotonic shear strength has been studied on torsional apparatus. Tests have been conducted on both reconstituted and undisturbed fine-grained hollow soil specimens. The plasticity index of soils is in the range from 2 to 33 for reconstituted specimens, prepared by dry pluviation, and from 5 to 13 for undisturbed soil specimens. The existence of a critical shear strain level, called yield shear strain, where softening starts, is determined from cyclic tests. The level of cyclic yield strain is ± 0.75% for the reconstituted soil specimens and ± 0.5% for the undisturbed soils. If soil undergoes a cyclic shear strain level below the cyclic yield strain, reduction of monotonic strength of reconstituted and undisturbed specimens is limited, but when cyclic shear strain level is larger than yield strain monotonic strength decreases down to 40% of its initial strength.",

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AU - Erken, Ayfer

AU - Can Ulker, B. M.

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AB - In this study the effect of cyclic loads on monotonic shear strength has been studied on torsional apparatus. Tests have been conducted on both reconstituted and undisturbed fine-grained hollow soil specimens. The plasticity index of soils is in the range from 2 to 33 for reconstituted specimens, prepared by dry pluviation, and from 5 to 13 for undisturbed soil specimens. The existence of a critical shear strain level, called yield shear strain, where softening starts, is determined from cyclic tests. The level of cyclic yield strain is ± 0.75% for the reconstituted soil specimens and ± 0.5% for the undisturbed soils. If soil undergoes a cyclic shear strain level below the cyclic yield strain, reduction of monotonic strength of reconstituted and undisturbed specimens is limited, but when cyclic shear strain level is larger than yield strain monotonic strength decreases down to 40% of its initial strength.

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KW - Post-cyclic strength

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Effect of cyclic loading on monotonic shear strength of fine-grained soils

Abstract

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Keywords

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