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Influences of freezing–thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions
Freezing–thawing actions can affect the mechanical features of soil greatly, which is vital for the stability of soil slope in cold regions. Firstly, triaxial compression tests on sand samples under undrained conditions were performed to investigate the influences of freezing–thawing cycles, which s...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8969157/ https://www.ncbi.nlm.nih.gov/pubmed/35354883 http://dx.doi.org/10.1038/s41598-022-09379-3 |
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author | Xiang, Bo Liu, Enlong Yang, Liuxin |
author_facet | Xiang, Bo Liu, Enlong Yang, Liuxin |
author_sort | Xiang, Bo |
collection | PubMed |
description | Freezing–thawing actions can affect the mechanical features of soil greatly, which is vital for the stability of soil slope in cold regions. Firstly, triaxial compression tests on sand samples under undrained conditions were performed to investigate the influences of freezing–thawing cycles, which shows that the freezing–thawing actions can weaken their strength and stiffness, and with the increasing freezing–thawing cycles, both the deviatoric stress and pore water pressure decrease gradually. Then, the double hardening constitutive model was revised to model the influences of freezing–thawing cycles in consideration of the influences of freezing–thawing actions, and the model was also validated by the test results. Finally, the proposed constitutive model was incorporated into a finite element code to numerically simulate the distribution of displacement and pore water pressure of sand slope subjected to freezing–thawing cycles, which shows that the freezing–thawing actions accelerate the dissipation of the pore water pressure and enlarge the displacement of the slope. The study here can provide a help in designing and construction of civil engineering in cold regions. |
format | Online Article Text |
id | pubmed-8969157 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-89691572022-04-01 Influences of freezing–thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions Xiang, Bo Liu, Enlong Yang, Liuxin Sci Rep Article Freezing–thawing actions can affect the mechanical features of soil greatly, which is vital for the stability of soil slope in cold regions. Firstly, triaxial compression tests on sand samples under undrained conditions were performed to investigate the influences of freezing–thawing cycles, which shows that the freezing–thawing actions can weaken their strength and stiffness, and with the increasing freezing–thawing cycles, both the deviatoric stress and pore water pressure decrease gradually. Then, the double hardening constitutive model was revised to model the influences of freezing–thawing cycles in consideration of the influences of freezing–thawing actions, and the model was also validated by the test results. Finally, the proposed constitutive model was incorporated into a finite element code to numerically simulate the distribution of displacement and pore water pressure of sand slope subjected to freezing–thawing cycles, which shows that the freezing–thawing actions accelerate the dissipation of the pore water pressure and enlarge the displacement of the slope. The study here can provide a help in designing and construction of civil engineering in cold regions. Nature Publishing Group UK 2022-03-30 /pmc/articles/PMC8969157/ /pubmed/35354883 http://dx.doi.org/10.1038/s41598-022-09379-3 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Xiang, Bo Liu, Enlong Yang, Liuxin Influences of freezing–thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions |
title | Influences of freezing–thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions |
title_full | Influences of freezing–thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions |
title_fullStr | Influences of freezing–thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions |
title_full_unstemmed | Influences of freezing–thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions |
title_short | Influences of freezing–thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions |
title_sort | influences of freezing–thawing actions on mechanical properties of soils and stress and deformation of soil slope in cold regions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8969157/ https://www.ncbi.nlm.nih.gov/pubmed/35354883 http://dx.doi.org/10.1038/s41598-022-09379-3 |
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