Mohr-Coulomb and Hardening Soil Model Comparison of the Settlement of an Embankment Dam

A. H. Bhutto, S. Zardari, M. A. Zardari, G. S. Bhurgri, B. A. Memon, R. Bhanbhro, M. M. Babar


In this study, numerical analysis of an embankment dam was carried out to predict settlement behavior with the use of the Mohr-Coulomb Model (MCM) and of the Hardening Soil Model (HSM). The MCM was applied to all material zones of the dam and the HSM was used for four major material zones that occupied significant volume. The settlement response of the dam was similar for MCM and HSM for three material zones (clay core, sandy gravel and random fill), each having a modulus of elasticity (MOE) in the range of 25000 to 50000kPa. However, it was found that after the end of the construction, the MCM showed about 57% and 50% more settlement as compared to HSM when MOE of sandy siltstone varied from 70000 to 125000kPa respectively. The results regarding the dam settlement predicted with the HSM are in agreement with the findings in previous studies.


settlement; embankment dam; hardening soil model; Mohr Coulomb model; modulus of elasticity

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J. M. Duncan, S. G. Wright, T. L. Brandon, Soil Strength and Slope Stability, John Wiley & Sons, 2014

R. B. Jansen, Advanced Dam Engineering for Design, Construction, and Rehabilitation, Springer, 2012

A. D. M. Penman, Instrumentation, Monitoring and Surveillance: Embankment Dams, Routledge, 2017

R. Nayebzadeh, M. Mohammadi, “The effect of impervious clay core shape on the stability of embankment dams”, Geotechnical and Geological Engineering, Vol. 29, No. 4, pp. 627-635, 2011

Q. Chen, Y. H. Zou, M. Tang, C. R. He, “Modelling the construction of a high embankment dam”, KSCE Journal of Civil Engineering, Vol. 18, No. 1, pp. 93-102, 2014

R. B. J. Brinkgreve, S. Kumarswamy, W. M. Swolfs, Plaxis Reference Manual, PLAXIS, 2017

P. Novak, A. I. B. Moffat, C. Nalluri, R. Narayanan, Hydraulic Structures, CRC Press, 2014

P. Pramthawee, P. Jongpradist, W. Kongkitkul, “Evaluation of hardening soil model on numerical simulation of behaviors of high rockfill dams”, Songklanakarin Journal of Science & Technology, Vol. 33, No. 3, pp. 325-334, 2011

H. T. Pham, H. Z. Oo, C. Jing, “Stability of slope and seepage analysis in earth dam using numerical finite element model”, Study of Civil Engineering and Architecture, Vol. 2, No. 4, pp. 104-108, 2013

E. Conte, F. Silvestri, A. Troncone, “Stability analysis of slopes in soils with strain-softening behaviour”, Computers and Geotechnics, Vol. 37, No. 5, pp. 710-722, 2010

M. A. Zardari, H. Mattsson, S. Knutsson, L. Ormann, “Comparison of three-dimensional and two-dimensional axisymmetric finite element analyses of a corner section of a tailings dam”, Scientia Iranica, International Journal of Science and Technology, Vol. 24, No. 5, pp. 2320-2331, 2017

T. Schanz, “Formulation and verification of the hardening-soil model”, in: Beyond 2000 in Computational Geotechnics, pp. 281-290, CRC Press, 1999

WAPDA, Project Planning Report of Nai Gaj Dam, Water And Power Development Authority Pakistan, 2006

A. J. Schleiss, R. M. Boes, Dams and Reservoirs Under Changing Challenges, CRC Press, 2011

M. Carter, S. P. Bentley, Soil Properties and their Correlations, John Wiley & Sons, 2016

F. Cobb, Structural Engineer's Pocket Book, 2nd Edition: British Standards, Elsevier, 2008

R. F. Craig, Soil Mechanics, Springer, 2013

R. A. Rajapakse, Geotechnical Engineering Calculations and Rules of Thumb, Butterworth-Heinemann, 2015

G. E. Barnes, Soil Mechanics: Principles and Practice, Palgrave MacMillan, 2010

J. L. Justo, J. Saura, “Three-dimensional analysis of infiernillo dam during construction and filling of the reservoir”, International Journal for Numerical and Analytical Methods in Geomechanics, Vol. 7, No. 2, pp. 225-243, 1983

B. G. Look, Handbook of Geotechnical Investigation and Design Tables, CRC Press, 2014

M. N. Sara, Site Assessment and Remediation Handbook, CRC Press, 2003

P. J. Burgess, D. Sarabia, J. Small, H. G. Poulos, J. Sinha, “Settlement Behaviour of a Major Dam”, Ancold 2006 Conference: Dams : The Challenges of the 21st Century, Sydney, Australia, November 19-22, 2006

L. Ormann, M. A. Zardari, H. Mattsson, A. Bjelkevik, S. Knutsson, “Numerical analysis of strengthening by rock fill embankments on an upstream tailings dam”, Canadian Geotechnical Journal, Vol. 50, No. 4, pp. 391-399, 2013

D. U. Deere, R. P. Miller, Engineering Classification and Index Properties for Intact Rock, Illinois University at Urbana, 1966

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