岩土工程学报2025，Vol.47Issue(2)：234-242,9.DOI:10.11779/CJGE20230372
粗粒土三阶状态相关本构模型研究
Three state variables-related constitutive model for coarse-grained soil
摘要
Abstract
The spatial variability of materials is a common problem in geotechnical engineering.For the coarse-grained soil,the essence of its spatial variability is the uneven distribution of particle gradation and density.However,the classical state-related theory can only describe the influences of density and stress level,which are only two state variables.The development of a three state variables-related constitutive model that considers gradation,density and stress level represents a significant advancement in the field of coarse-grained soil engineering.The introduction of a gradation parameter enables the quantitative characterization of changes in the gradation curve of coarse-grained soil.This has led to the proposal of the critical state equation and isotropic consolidation equation,which considers the effects of gradation,density and stress level.Furthermore,a three-state variables-related constitutive model for coarse-grained soil is established based on the principles of the generalized plasticity theory.The proposed model employs a single set of model parameters,which are capable of accurately representing the stress-strain characteristics of coarse-grained soils under diverse gradations,densities and confining pressure conditions.Furthermore,it can be uesd in the numerical analysis of coarse-grained soil engineering,taking into account the spatial variability of materials.关键词
粗粒土/级配/临界状态/三阶状态相关/本构模型Key words
coarse-grained soil/gradation/critical state/three state variables-related/constitutive model分类
建筑与水利引用本文复制引用
郭万里,蔡正银,朱俊高..粗粒土三阶状态相关本构模型研究[J].岩土工程学报,2025,47(2):234-242,9.基金项目
国家自然科学基金-长江水科学研究联合基金项目(U2040221) （U2040221）
南京水利科学研究院中央级公益性科研院所基本科研业务费专项资金项目(Y324001) （Y324001）
