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A Constitutive Relationship for Gravelly Soil Considering Fine Particle Suffusion
Suffusion erosion may occur in sandy gravel dam foundations that use suspended cutoff walls. This erosion causes a loss of fine particles, degrades the soil strength and deformation moduli, and adversely impacts the cutoff walls of the dam foundation, as well as the overlying dam body. A comprehensi...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5667023/ https://www.ncbi.nlm.nih.gov/pubmed/29065532 http://dx.doi.org/10.3390/ma10101217 |
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author | Zhang, Yuning Chen, Yulong |
author_facet | Zhang, Yuning Chen, Yulong |
author_sort | Zhang, Yuning |
collection | PubMed |
description | Suffusion erosion may occur in sandy gravel dam foundations that use suspended cutoff walls. This erosion causes a loss of fine particles, degrades the soil strength and deformation moduli, and adversely impacts the cutoff walls of the dam foundation, as well as the overlying dam body. A comprehensive evaluation of these effects requires models that quantitatively describe the effects of fine particle losses on the stress-strain relationships of sandy gravels. In this work, we propose an experimental scheme for studying these types of models, and then perform triaxial and confined compression tests to determine the effects of particle losses on the stress-strain relationships. Considering the Duncan-Chang E-B model, quantitative expressions describing the relationship between the parameters of the model and the particle losses were derived. The results show that particle losses did not alter the qualitative stress-strain characteristics of the soils; however, the soil strength and deformation moduli were degraded. By establishing the relationship between the parameters of the model and the losses, the same model can then be used to describe the relationship between sandy gravels and erosion levels that vary in both time and space. |
format | Online Article Text |
id | pubmed-5667023 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-56670232017-11-09 A Constitutive Relationship for Gravelly Soil Considering Fine Particle Suffusion Zhang, Yuning Chen, Yulong Materials (Basel) Article Suffusion erosion may occur in sandy gravel dam foundations that use suspended cutoff walls. This erosion causes a loss of fine particles, degrades the soil strength and deformation moduli, and adversely impacts the cutoff walls of the dam foundation, as well as the overlying dam body. A comprehensive evaluation of these effects requires models that quantitatively describe the effects of fine particle losses on the stress-strain relationships of sandy gravels. In this work, we propose an experimental scheme for studying these types of models, and then perform triaxial and confined compression tests to determine the effects of particle losses on the stress-strain relationships. Considering the Duncan-Chang E-B model, quantitative expressions describing the relationship between the parameters of the model and the particle losses were derived. The results show that particle losses did not alter the qualitative stress-strain characteristics of the soils; however, the soil strength and deformation moduli were degraded. By establishing the relationship between the parameters of the model and the losses, the same model can then be used to describe the relationship between sandy gravels and erosion levels that vary in both time and space. MDPI 2017-10-23 /pmc/articles/PMC5667023/ /pubmed/29065532 http://dx.doi.org/10.3390/ma10101217 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Zhang, Yuning Chen, Yulong A Constitutive Relationship for Gravelly Soil Considering Fine Particle Suffusion |
title | A Constitutive Relationship for Gravelly Soil Considering Fine Particle Suffusion |
title_full | A Constitutive Relationship for Gravelly Soil Considering Fine Particle Suffusion |
title_fullStr | A Constitutive Relationship for Gravelly Soil Considering Fine Particle Suffusion |
title_full_unstemmed | A Constitutive Relationship for Gravelly Soil Considering Fine Particle Suffusion |
title_short | A Constitutive Relationship for Gravelly Soil Considering Fine Particle Suffusion |
title_sort | constitutive relationship for gravelly soil considering fine particle suffusion |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5667023/ https://www.ncbi.nlm.nih.gov/pubmed/29065532 http://dx.doi.org/10.3390/ma10101217 |
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