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Recent developments of generalized plasticity models for saturated and unsaturated soils

Water Science and Engineering 2011年第3期4卷 329-344页

作者： Hong-en LI Yong-jun HE Guang-ya FAN Tong-chun LI Manuel pastor Dam Safety Management Department Nanjing Hydraulic Research Institute Nanjing 210029 P. R. China Dam Safety Management Center of Ministry of Water Resources Nanjing 210029 P. R. China College of Water Conservancy and Hydropower Engineering Hohai University Nanjing 210098 P. R. China Department of Applied Mathematics Technical University of Madrid Madrid 28040 Spain

Soil undergoes both elastic and plastic deformations under different loading conditions. A relatively accurate constitutive model of soil behaviors should be capable of predicting the elastic and plastic deformations properly. Among a large number of elastoplastic constitutive models developed over the last several decades, constitutive models based on generalized plasticity have been successfully utilized in modeling the mechanical behavior of various soils. This paper attempts to present a review of the most recent developments of generalized plasticity models for geotechnical problems. After a brief review of generalized plasticity theories and constitutive models, limitations of the original pastor-zienkiewicz model in practical application are summarized. Afterwards, recent achievements in the generalized plasticity models for both saturated and unsaturated soils and their applicability are analyzed, and a general approach for modification of generalized plasticity models is highlighted.

关键词： generalized plasticity constitutive model pastor-zienkiewicz model saturated and unsaturated soils

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