Elastoplastic Model Framework for Saturated Soils Subjected to a Freeze–Thaw Cycle Based on Generalized Plasticity Theory

The failures of soil slopes during the construction of high-speed railway caused by the soil after the freeze–thaw (F–T) cycle and the subsequent threat to construction safety are critical issues. An appropriate constitutive model for soils accurately describing the deformation characteristics of so...

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Autores principales:	Shengyi Cong, Xianzhang Ling, Xinyu Li, Lin Geng, Wenqiang Xing, Guoyu Li
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	constitutive relation generalized plasticity theory double yield surfaces saturated soils freeze–thaw cycle Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/d1f89c8a35fa4a3ea31b778a912cf5bc
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spelling	oai:doaj.org-article:d1f89c8a35fa4a3ea31b778a912cf5bc2021-11-11T18:03:29ZElastoplastic Model Framework for Saturated Soils Subjected to a Freeze–Thaw Cycle Based on Generalized Plasticity Theory10.3390/ma142164851996-1944https://doaj.org/article/d1f89c8a35fa4a3ea31b778a912cf5bc2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6485https://doaj.org/toc/1996-1944The failures of soil slopes during the construction of high-speed railway caused by the soil after the freeze–thaw (F–T) cycle and the subsequent threat to construction safety are critical issues. An appropriate constitutive model for soils accurately describing the deformation characteristics of soil slopes after the F–T cycle is very important. Few constitutive models of soils incorporate the F–T cycle, and the associated flow rule has always been employed in previous models, which results in an overestimation of the deformation of soil exposed to the F–T cycle. Generalized plasticity theory is widely used to predict the performance of geotechnical materials and is especially well adapted to deal with this type of generalized cyclic loading (such as a freeze–thaw cycle), and it overcomes the shortcomings of the associated flow rule that causes larger shear deformation. To this end, an elastoplastic model framework based on generalized plasticity theory with double yield surfaces for saturated soils subjected to F–T cycles was developed. Two types of plastic deformation mechanisms, i.e., plastic volumetric compression and plastic shear, were considered in this elastoplastic model. It was found that this model can accurately predict the mechanical behavior and deformation characteristics of saturated soils after F–T cycles.Shengyi CongXianzhang LingXinyu LiLin GengWenqiang XingGuoyu LiMDPI AGarticleconstitutive relationgeneralized plasticity theorydouble yield surfacessaturated soilsfreeze–thaw cycleTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6485, p 6485 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	constitutive relation generalized plasticity theory double yield surfaces saturated soils freeze–thaw cycle Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	constitutive relation generalized plasticity theory double yield surfaces saturated soils freeze–thaw cycle Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Shengyi Cong Xianzhang Ling Xinyu Li Lin Geng Wenqiang Xing Guoyu Li Elastoplastic Model Framework for Saturated Soils Subjected to a Freeze–Thaw Cycle Based on Generalized Plasticity Theory
description	The failures of soil slopes during the construction of high-speed railway caused by the soil after the freeze–thaw (F–T) cycle and the subsequent threat to construction safety are critical issues. An appropriate constitutive model for soils accurately describing the deformation characteristics of soil slopes after the F–T cycle is very important. Few constitutive models of soils incorporate the F–T cycle, and the associated flow rule has always been employed in previous models, which results in an overestimation of the deformation of soil exposed to the F–T cycle. Generalized plasticity theory is widely used to predict the performance of geotechnical materials and is especially well adapted to deal with this type of generalized cyclic loading (such as a freeze–thaw cycle), and it overcomes the shortcomings of the associated flow rule that causes larger shear deformation. To this end, an elastoplastic model framework based on generalized plasticity theory with double yield surfaces for saturated soils subjected to F–T cycles was developed. Two types of plastic deformation mechanisms, i.e., plastic volumetric compression and plastic shear, were considered in this elastoplastic model. It was found that this model can accurately predict the mechanical behavior and deformation characteristics of saturated soils after F–T cycles.
format	article
author	Shengyi Cong Xianzhang Ling Xinyu Li Lin Geng Wenqiang Xing Guoyu Li
author_facet	Shengyi Cong Xianzhang Ling Xinyu Li Lin Geng Wenqiang Xing Guoyu Li
author_sort	Shengyi Cong
title	Elastoplastic Model Framework for Saturated Soils Subjected to a Freeze–Thaw Cycle Based on Generalized Plasticity Theory
title_short	Elastoplastic Model Framework for Saturated Soils Subjected to a Freeze–Thaw Cycle Based on Generalized Plasticity Theory
title_full	Elastoplastic Model Framework for Saturated Soils Subjected to a Freeze–Thaw Cycle Based on Generalized Plasticity Theory
title_fullStr	Elastoplastic Model Framework for Saturated Soils Subjected to a Freeze–Thaw Cycle Based on Generalized Plasticity Theory
title_full_unstemmed	Elastoplastic Model Framework for Saturated Soils Subjected to a Freeze–Thaw Cycle Based on Generalized Plasticity Theory
title_sort	elastoplastic model framework for saturated soils subjected to a freeze–thaw cycle based on generalized plasticity theory
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d1f89c8a35fa4a3ea31b778a912cf5bc
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Elastoplastic Model Framework for Saturated Soils Subjected to a Freeze–Thaw Cycle Based on Generalized Plasticity Theory

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