Shear band analysis of silt-clay transition soils under three-dimensional stress-strain conditions
This paper investigates shear banding as a possible failure mode for silt–clay transition soils under general three-dimensional stress conditions. Drained and undrained true triaxial tests with constant b values were performed on tall prismatic specimens of such soils with systematically varying sil...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Soils and Foundations |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0038080624001100 |
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| author | Pongpipat Anantanasakul Victor N. Kaliakin |
| author_facet | Pongpipat Anantanasakul Victor N. Kaliakin |
| author_sort | Pongpipat Anantanasakul |
| collection | DOAJ |
| description | This paper investigates shear banding as a possible failure mode for silt–clay transition soils under general three-dimensional stress conditions. Drained and undrained true triaxial tests with constant b values were performed on tall prismatic specimens of such soils with systematically varying silt contents. Based on the values of critical plastic hardening modulus, shear banding does not govern the strength characteristics of the soils for b values less than 0.2. For larger b values, shear band formation is essentially critical as it takes place in the hardening regime of the stress–strain curves prior to the smooth peak failure points. An increase in silt content appears to move the onset of shear banding to lower levels of shear in the stress–strain relations of the silt–clay transition soils. It is also demonstrated that a non-associated constitutive model with a single hardening law is capable of accurately predicting the onset of shear banding in normally consolidated silt–clay transition soils based on bifurcation theory. |
| format | Article |
| id | doaj-art-49c94913fa834985a1593dbaf7745672 |
| institution | Kabale University |
| issn | 2524-1788 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Soils and Foundations |
| spelling | doaj-art-49c94913fa834985a1593dbaf77456722024-12-16T05:34:31ZengElsevierSoils and Foundations2524-17882024-12-01646101532Shear band analysis of silt-clay transition soils under three-dimensional stress-strain conditionsPongpipat Anantanasakul0Victor N. Kaliakin1Department of Civil and Environmental Engineering, Mahidol University, Nakhon Pathom 73170, Thailand; Corresponding author.Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, USAThis paper investigates shear banding as a possible failure mode for silt–clay transition soils under general three-dimensional stress conditions. Drained and undrained true triaxial tests with constant b values were performed on tall prismatic specimens of such soils with systematically varying silt contents. Based on the values of critical plastic hardening modulus, shear banding does not govern the strength characteristics of the soils for b values less than 0.2. For larger b values, shear band formation is essentially critical as it takes place in the hardening regime of the stress–strain curves prior to the smooth peak failure points. An increase in silt content appears to move the onset of shear banding to lower levels of shear in the stress–strain relations of the silt–clay transition soils. It is also demonstrated that a non-associated constitutive model with a single hardening law is capable of accurately predicting the onset of shear banding in normally consolidated silt–clay transition soils based on bifurcation theory.http://www.sciencedirect.com/science/article/pii/S0038080624001100Shear bandTrue triaxial testBifurcation analysisElastoplastic constitutive modelCritical plastic hardening modulusSilt-clay transition soil |
| spellingShingle | Pongpipat Anantanasakul Victor N. Kaliakin Shear band analysis of silt-clay transition soils under three-dimensional stress-strain conditions Soils and Foundations Shear band True triaxial test Bifurcation analysis Elastoplastic constitutive model Critical plastic hardening modulus Silt-clay transition soil |
| title | Shear band analysis of silt-clay transition soils under three-dimensional stress-strain conditions |
| title_full | Shear band analysis of silt-clay transition soils under three-dimensional stress-strain conditions |
| title_fullStr | Shear band analysis of silt-clay transition soils under three-dimensional stress-strain conditions |
| title_full_unstemmed | Shear band analysis of silt-clay transition soils under three-dimensional stress-strain conditions |
| title_short | Shear band analysis of silt-clay transition soils under three-dimensional stress-strain conditions |
| title_sort | shear band analysis of silt clay transition soils under three dimensional stress strain conditions |
| topic | Shear band True triaxial test Bifurcation analysis Elastoplastic constitutive model Critical plastic hardening modulus Silt-clay transition soil |
| url | http://www.sciencedirect.com/science/article/pii/S0038080624001100 |
| work_keys_str_mv | AT pongpipatanantanasakul shearbandanalysisofsiltclaytransitionsoilsunderthreedimensionalstressstrainconditions AT victornkaliakin shearbandanalysisofsiltclaytransitionsoilsunderthreedimensionalstressstrainconditions |