A Suction Induced Modification In Elastoplastic Behaviour Of Partially Saturated Soils.
Abstract
The main goal of the present paper is to carry out a plastic mathematical model for partially
saturated soils based on the Critical State Theory (J.H. Atkinson and P.L. Bransby, McGraw Hill,
(1978)). For this scope, a plastic yield criterion for saturated soil (H.A. Di Rado, et.al. Informacion
Tecnologica,10(6):165-175(1999)), was re formulated for partially saturated soils by the inclusion of
the matric suction as an independent parameter. Another two adjustment parameters were included and
a kinematic and an isotropic expansion of the yield function were combined. The computational implementation
was carried out using the Finite Elements Method. Diverse results were presented and
some discussions about the pore pressures and the vertical displacements were addressed showing the
adaptability of the model to highly compressive non saturated soils.
saturated soils based on the Critical State Theory (J.H. Atkinson and P.L. Bransby, McGraw Hill,
(1978)). For this scope, a plastic yield criterion for saturated soil (H.A. Di Rado, et.al. Informacion
Tecnologica,10(6):165-175(1999)), was re formulated for partially saturated soils by the inclusion of
the matric suction as an independent parameter. Another two adjustment parameters were included and
a kinematic and an isotropic expansion of the yield function were combined. The computational implementation
was carried out using the Finite Elements Method. Diverse results were presented and
some discussions about the pore pressures and the vertical displacements were addressed showing the
adaptability of the model to highly compressive non saturated soils.
Full Text:
PDFAsociación Argentina de Mecánica Computacional
Güemes 3450
S3000GLN Santa Fe, Argentina
Phone: 54-342-4511594 / 4511595 Int. 1006
Fax: 54-342-4511169
E-mail: amca(at)santafe-conicet.gov.ar
ISSN 2591-3522