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...
Main Authors: | , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2017-10-01
|
Series: | Materials |
Subjects: | |
Online Access: | https://www.mdpi.com/1996-1944/10/10/1217 |
id |
doaj-63dd742cdf9242d9953eec6618dc43a3 |
---|---|
record_format |
Article |
spelling |
doaj-63dd742cdf9242d9953eec6618dc43a32020-11-24T20:46:39ZengMDPI AGMaterials1996-19442017-10-011010121710.3390/ma10101217ma10101217A Constitutive Relationship for Gravelly Soil Considering Fine Particle SuffusionYuning Zhang0Yulong Chen1School of Civil and Architectural Engineering, Yangtze Normal University, Chongqing 408100, ChinaState Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, ChinaSuffusion 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.https://www.mdpi.com/1996-1944/10/10/1217suffusionfine particle lossesgravelly soilconstitutive model |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yuning Zhang Yulong Chen |
spellingShingle |
Yuning Zhang Yulong Chen A Constitutive Relationship for Gravelly Soil Considering Fine Particle Suffusion Materials suffusion fine particle losses gravelly soil constitutive model |
author_facet |
Yuning Zhang Yulong Chen |
author_sort |
Yuning Zhang |
title |
A Constitutive Relationship for Gravelly Soil Considering Fine Particle Suffusion |
title_short |
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_sort |
constitutive relationship for gravelly soil considering fine particle suffusion |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2017-10-01 |
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. |
topic |
suffusion fine particle losses gravelly soil constitutive model |
url |
https://www.mdpi.com/1996-1944/10/10/1217 |
work_keys_str_mv |
AT yuningzhang aconstitutiverelationshipforgravellysoilconsideringfineparticlesuffusion AT yulongchen aconstitutiverelationshipforgravellysoilconsideringfineparticlesuffusion AT yuningzhang constitutiverelationshipforgravellysoilconsideringfineparticlesuffusion AT yulongchen constitutiverelationshipforgravellysoilconsideringfineparticlesuffusion |
_version_ |
1716811959541694464 |