[1] Itoya Emioshor, Zhao Yin, Martins Y. Otache,. Stability analysis of a concrete gravity dam and its foundation [J]. Journal of Southeast University (English Edition), 2004, 20 (4): 508-512. [doi:10.3969/j.issn.1003-7985.2004.04.023]

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Stability analysis of a concrete gravity dam and its foundation()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

20

Issue:

2004 4

Page:

508-512

Research Field:

Other Disciplines

Publishing date:

2004-12-30

Info

Title:

Stability analysis of a concrete gravity dam and its foundation

Author(s):

Itoya Emioshor¹;  Zhao Yin¹;  Martins Y. Otache²

¹College of Civil Engineering, Hohai University, Nanjing 210098, China
²College of Water Resources and Environment, Hohai University, Nanjing 210098, China

Keywords:

stability;  gravity dam;  safety factor;  rigid limit equilibrium theory;  elasto-plastic theory;  nonlinear finite element method

PACS:

TV642

DOI:

10.3969/j.issn.1003-7985.2004.04.023

Abstract:

The stability of dams and their foundations is an important problem to which dam engineers have paid close attention over the years. This paper presents two methods to analyze the stability of a gravity dam and its foundation. The direct analysis method is based on a rigid limit equilibrium method which regards both dam and the rock foundation as undeformable rigid bodies. In this method, the safety factor of potential sliding surfaces was computed directly. The second method, the indirect analysis method, is based on elasto-plastic theory and employs nonlinear finite element method(FEM)in the analysis of stresses and deformation in the dam and its foundation. The determination of the safety degree of the structure was based on the convergence and abrupt the change criterion. The results obtained show that structures’ constituent material behavior plays an active role in the failure of engineered structures in addition to the imposed load.

References:

[1] Du Chengbin, Ren Qingwen. Nonlinear finite element analysis of dam with perimentral joints [A]. In: Proc of Computational Mechanics[C]. Philippines, 2000, 1: 346.
[2] Dawson E M, Roth W H, Drescger A. Slope stability analysis by strength reduction [J]. Journal Geotechnical, 1999, 49(6): 835-840.
[3] Du C B, Qiu Y. Analysis of failure of Meihua arch dam [A]. In: Proc of the 3rd International Conference on Dam Engineering [C]. Singapore, 2002. 89-96.
[4] Zienkiewicz O C, Valliappan S, King I P. Elasto-plastic solution of engineering problems initial stress, finite element approach, international [J]. Journal for Numerical Methods in Engineering, 1969, 1: 75-100.
[5] Owen D R J, Hinton E. Finite elements in plasticity theory and practice [M]. London: London University Press, 1980. 213-236.

Memo

Memo:

Biographies: Itoya Emioshor(1973—), male, graduate, Nigerian, emioshor@yahoo.com; Zhao Yin(corresponding author), female, associate professor, zhaoyin01@163.com.

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