A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
An elastoplastic constitutive model for unsaturated loess with internal structure
The structure of unsaturated loess has a significant impact on its hydraulic and mechanical properties. An elastoplastic model considering the structured evolution of unsaturated loess is presented in this paper using double stress variables consisting of average skeleton stress and suction. The model divides the structure of unsaturated loess into inherent structure and suction-induced structure from the structured composition of loess and gives isotropic compression equation for unsaturated loess that considers the structure evolution. At the same time, a soil–water characteristic curve considering the influence of the void ratio is introduced to reflect the coupling between the hydro-mechanical behaviours of unsaturated loess. The proposed isotropic compression equation is extended to axisymmetric stress space with the aid of the yield surface and flow law in the modified Cam-clay model. The proposed model can not only reflect the structured evolution of loess, but also predict reasonably the mechanical and hydraulic behaviour of loess under different stress paths. The reasonableness and availability of the proposed model are initially verified by comparison with the results of the unsaturated loess isotropic compression tests at constant suctions, the wetting test at constant net stresses, the complex stress path tests and the triaxial shear tests as well.
An elastoplastic constitutive model for unsaturated loess with internal structure
The structure of unsaturated loess has a significant impact on its hydraulic and mechanical properties. An elastoplastic model considering the structured evolution of unsaturated loess is presented in this paper using double stress variables consisting of average skeleton stress and suction. The model divides the structure of unsaturated loess into inherent structure and suction-induced structure from the structured composition of loess and gives isotropic compression equation for unsaturated loess that considers the structure evolution. At the same time, a soil–water characteristic curve considering the influence of the void ratio is introduced to reflect the coupling between the hydro-mechanical behaviours of unsaturated loess. The proposed isotropic compression equation is extended to axisymmetric stress space with the aid of the yield surface and flow law in the modified Cam-clay model. The proposed model can not only reflect the structured evolution of loess, but also predict reasonably the mechanical and hydraulic behaviour of loess under different stress paths. The reasonableness and availability of the proposed model are initially verified by comparison with the results of the unsaturated loess isotropic compression tests at constant suctions, the wetting test at constant net stresses, the complex stress path tests and the triaxial shear tests as well.
An elastoplastic constitutive model for unsaturated loess with internal structure
Acta Geotech.
Weng, Xiaolin (author) / Hou, Lele (author) / Hu, Jibo (author) / Zhou, Rongming (author)
Acta Geotechnica ; 19 ; 3603-3619
2024-06-01
17 pages
Article (Journal)
Electronic Resource
English
Elastoplastic constitutive model , Hydro-mechanical behaviours , Structured damage , Structured loess Engineering , Geoengineering, Foundations, Hydraulics , Solid Mechanics , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Soft and Granular Matter, Complex Fluids and Microfluidics
An elastoplastic constitutive model for unsaturated loess with internal structure
| Springer Verlag | 2024
Thermo-elastoplastic constitutive model for unsaturated soils
| Springer Verlag | 2016
Thermo-elastoplastic constitutive model for unsaturated soils
| Online Contents | 2016
Thermo-elastoplastic constitutive model for unsaturated soils
| British Library Online Contents | 2016
Thermo-elastoplastic constitutive model for unsaturated soils
| Springer Verlag | 2016