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Elastoplastic solutions for cylindrical cavity expansion in unsaturated soils
https://orcid.org/0000-0002-8014-8296
https://orcid.org/0000-0002-7543-3797
Abstract Elastoplastic solutions are developed in this paper for cylindrical cavity expansion in unsaturated soils, aiming to provide a theoretical model to analyze the pressuremeter test and pile installation in unsaturated soils. The novelty of the solution lies in the subtle coupling of hydraulic behaviour and mechanical behaviour of the soil in the governing equations. An elastoplastic critical state model for unsaturated soils is used to derive the elastoplastic constitutive matrix for both the undrained (constant gravimetric water contents) and drained (constant suction) expansion of a cylindrical cavity in unsaturated soils, which are finally formulated to a system of first-order differential equations. The governing differential equations are solved as an initial value problem with the initial conditions determined by the yield function of the unsaturated soil model and continuous condition. Parametric studies are performed to investigate the expansion responses of the surrounding soil and particular attention is given to the responses at the cavity wall. The results indicate that suction has significant effects on both the mechanical and hydraulic responses of the surrounding soil.
Elastoplastic solutions for cylindrical cavity expansion in unsaturated soils
https://orcid.org/0000-0002-8014-8296
https://orcid.org/0000-0002-7543-3797
Abstract Elastoplastic solutions are developed in this paper for cylindrical cavity expansion in unsaturated soils, aiming to provide a theoretical model to analyze the pressuremeter test and pile installation in unsaturated soils. The novelty of the solution lies in the subtle coupling of hydraulic behaviour and mechanical behaviour of the soil in the governing equations. An elastoplastic critical state model for unsaturated soils is used to derive the elastoplastic constitutive matrix for both the undrained (constant gravimetric water contents) and drained (constant suction) expansion of a cylindrical cavity in unsaturated soils, which are finally formulated to a system of first-order differential equations. The governing differential equations are solved as an initial value problem with the initial conditions determined by the yield function of the unsaturated soil model and continuous condition. Parametric studies are performed to investigate the expansion responses of the surrounding soil and particular attention is given to the responses at the cavity wall. The results indicate that suction has significant effects on both the mechanical and hydraulic responses of the surrounding soil.
Elastoplastic solutions for cylindrical cavity expansion in unsaturated soils
https://orcid.org/0000-0002-8014-8296
https://orcid.org/0000-0002-7543-3797
Abstract Elastoplastic solutions are developed in this paper for cylindrical cavity expansion in unsaturated soils, aiming to provide a theoretical model to analyze the pressuremeter test and pile installation in unsaturated soils. The novelty of the solution lies in the subtle coupling of hydraulic behaviour and mechanical behaviour of the soil in the governing equations. An elastoplastic critical state model for unsaturated soils is used to derive the elastoplastic constitutive matrix for both the undrained (constant gravimetric water contents) and drained (constant suction) expansion of a cylindrical cavity in unsaturated soils, which are finally formulated to a system of first-order differential equations. The governing differential equations are solved as an initial value problem with the initial conditions determined by the yield function of the unsaturated soil model and continuous condition. Parametric studies are performed to investigate the expansion responses of the surrounding soil and particular attention is given to the responses at the cavity wall. The results indicate that suction has significant effects on both the mechanical and hydraulic responses of the surrounding soil.
Elastoplastic solutions for cylindrical cavity expansion in unsaturated soils
Chen, Haohua (author) / Li, Lin. (author) / Li, Jingpei (author) / Sun, De'an (author)
2020-04-03
Article (Journal)
Electronic Resource
English
The Elastoplastic Solutions of Cylindrical Cavity Expansion Considering the K0.1
| British Library Conference Proceedings | 2014
Cavity expansion in unsaturated soils
| British Library Conference Proceedings | 2002