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Implementation of plasticity based models in dynamic analysis of earth and rockfill dams: A comparison of Pastor-Zienkiewicz and cap models

Khoei, A. R ; Sharif University of Technology | 2004

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  1. Type of Document: Article
  2. DOI: 10.1016/j.compgeo.2004.04.003
  3. Publisher: Elsevier BV , 2004
  4. Abstract:
  5. In this paper, a unified finite element formulation associated with saturated and unsaturated soils is presented. The finite element method is applied to the governing equations for the spatial discretization, followed by a generalized Newmark scheme used for the time domain discretization. Time stepping scheme is used in the fully implicit coupled method and a direct solution procedure is used for the coupled equation system. The framework of generalized plasticity is presented and the numerical results of three saturated-unsaturated earth and rockfill dams are demonstrated. A comparison is performed between the Pastor-Zienkiewicz and cap plasticity models through the dynamic analysis of the failure of lower San Fernando dam under the 1971 earthquake and the Mahabad and Doroodzan dams under the 1978 Tabas earthquake. © 2004 Elsevier Ltd. All rights reserved
  6. Keywords:
  7. Cap plasticity ; Dynamic analysis ; Earth dams ; P-Z model ; Unsaturated soils
  8. Source: Computers and Geotechnics ; Volume 31, Issue 5 , 2004 , Pages 384-409 ; 0266352X (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0266352X04000552