Comparison of Quasi-Static and Dynamic Stress-Strain Analysis in Earth Dams (Case Study: Azadi Earth Dam)

Document Type : Original Article

Authors

Department of Water Engineering and Hydraulic Structures, University of Ayatollah Ozma Borujerdi, Lorestan, Iran.

Abstract

Seismic analysis of earth and rockfill dams is generally done in two ways: quasi-static and dynamic. However, a quasi-static method with easy application and simple assumptions may lead to unsafe and uneconomical results. In the present study, two static and dynamic analyzes have been used nonlinearly using the Rayleigh Damping rule to calculate the stress and strain of Azadi Dam in the stages of the end of construction and steady-state seepage. Also, in numerical analysis, Abaqus software and a simple elastoplastic behavior model based on the Mohr-Coulomb criterion have been used. The results show that in both quasi-static and dynamic seismic analysis, the highest strain of the Azadi Dam core occurred at the upper levels of the core and the highest stress occurred at the level of the core floor. The stress in the dynamic state is higher than the quasi-static one in the directions σxx 49%, σxy 30%, and σyy 28%, respectively. Also, the maximum shell stress at 1255 m, 1275 m, and 1300 m levels is 29%, 68%, and 72% higher than the core,

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Copyright © 2021 Behrang Beiranvand. This is an open access paper distributed under the Creative Commons Attribution License. Journal of Civil Engineering and Materials Application is published by Pendar Pub; Journal p-ISSN 2676-332X; Journal e-ISSN 2588-2880.

References

[1] Ambraseys NN, Sarma SK. The response of earth dams to strong earthquakes. Geotechnique. 1967 Sep;17(3):181-213. [View at Google Scholar] ; [View at Publisher]
[2] Sarma SK. Seismic stability of earth dams and embankments. Geotechnique. 1975 Dec;25(4):743-61. [View at Google Scholar] ; [View at Publisher]
[3] Wang ZL, Makdisi FI, Egan J. Practical applications of a nonlinear approach to analysis of earthquake-induced liquefaction and deformation of earth structures. Soil Dynamics and Earthquake Engineering. 2006 Feb 1;26(2-4):231-52. [View at Google Scholar] ; [View at Publisher]
[4] Tsai PH, Hsu SC, Lai J. Effects of core on dynamic responses of earth dam. InSlope Stability, Retaining Walls, and Foundations: Selected Papers from the 2009 GeoHunan International Conference 2009 (pp. 8-13). [View at Google Scholar] ; [View at Publisher]
[5] Tsompanakis Y, Lagaros ND, Psarropoulos PN, Georgopoulos EC. Simulating the seismic response of embankments via artificial neural networks. Advances in Engineering Software. 2009 Aug 1;40(8):640-51. [View at Google Scholar] ; [View at Publisher]
[6] Elia G, Amorosi A, Chan AH, Kavvadas MJ. Numerical prediction of the dynamic behavior of two earth dams in Italy using a fully coupled nonlinear approach. International Journal of Geomechanics. 2011 Dec 1;11(6):504-18. [View at Google Scholar] ; [View at Publisher]
[7] Mukherjee S. Seismic slope stability analysis of earth dam: Some modern practices. Int. J. Recent Adv. Mech. Eng. 2013;2(1):41-50. [View at Google Scholar] ; [View at Publisher]
[8] Huang LJ, Sheen YN, Hsiao DH, Le DH. Numerical Analysis of Excavation Backfilled with Soil-based Controlled Low-Strength Materials: Part I-Static Analysis. IJETAE. 2014 Dec;4(12):132-9. [View at Google Scholar] ; [View at Publisher]
[9] Panulinová E, Harabinová S. Methods for analyzing the stability of an earthen dam slope. InAdvanced Materials Research 2014 (Vol. 969, pp. 245-248). Trans Tech Publications Ltd. [View at Google Scholar] ; [View at Publisher]
[10] Bandini V, Biondi G, Cascone E, Rampello S. A GLE-based model for seismic displacement analysis of slopes including strength degradation and geometry rearrangement. Soil Dynamics and Earthquake Engineering. 2015 Apr 1;71:128-42. [View at Google Scholar] ; [View at Publisher]
[11] Zienkiewicz OC, Taylor RL, Nithiarasu P, Zhu JZ. The finite element method. London: McGraw-hill; 1977. [View at Google Scholar] ; [View at Publisher]
[12] Mazaheri AR, Zeinolebadi Rozbahani M, Beiranvand B. Quasi-Static and Dynamic Analysis of Vertical and Horizontal Displacements in Earth Dams (Case Study: Azadi Earth Dam). Journal of civil Engineering and Materials Application. 2020 Dec 1;4(4):223-32. [View at Google Scholar] ; [View at Publisher]
[13] ABAQUS Theory Manual, version 6.11-3., 2011. Dassault Systems. [View at Publisher]
 
Journal of Civil Engineering and Materials Application
Volume 5, Issue 2
June 2021
Pages 81-92

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History

  • Receive Date: 11 March 2021
  • Revise Date: 30 April 2021
  • Accept Date: 21 May 2021

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