Nonlinear static analysis of an asphalt concrete core dam for comparison of three constitutive models
Treść / Zawartość
The goal of this work is to compare different constitutive models in the nonlinear static characteristic analysis of asphalt concrete core dams. The Duncan E- mi model, Duncan E-B model and double-yield-surface model are three major constitutive models in the nonlinear static prediction of earth-rockfill dam. In this paper, an earth-rock fill dam with asphalt concrete core-wall in an actual hydraulic engineering is employed to compare the three models. The finite element model of the core-wall dam is proposed. Nonlinear static analysis of the dam is carried out and the static characteristics are obtained to study the differences generated from different constitutive models. Numerical results show that both the stress extremum and the stress distribution of dam body with three different models are coincident one another. In the deformation analysis of dam body and core-wall, the maximum values of sedimentation with the Duncan E-mi model and the Duncan E-B model, which are greater than the value with double-yield-surface model, are close to the practical test data though the deformation distributions with three models are in good agreement. But, the analysis results of core-wall stress with double-yield-surface model are proper and more reasonable than the other models.
Bibliogr. 15 poz., il.
- 1. H. Karre, Asphalt Concrete Cores for Embankment Dams, Norwegian Geotechnical Institute, Publication No. 201, 1993.
- 2. F.L. Roberts, L.N. Mohammad, L.B. Wang, History of hot mix asphalt mixture design in the United States, J. Mater. Civ. Eng., 14(4), 279-293, 2002.
- 3. B.L. Zhu, Z.J. Shen, Computational Soil Mechanics. Shanghai, Shanghai Scientific and Technical Publishers, 1990.
- 4. J.M. Duncan, C.T. Chang, Non-linear analysis of stress and strain in soils, J. Soil Mech. Found. Div., 96(5), 1629-1653, 1970.
- 5. J.M. Duncan, P. Byrne, K.S. Wong, P. Marby, Strength, Stress-strain and bulk modulous parameters for finite emement analysis of stress and movements in soils masses. Pep. No. UCB/GT/80-01, Univ. of California, Berkekey, Calif, 1980.
- 6. A.N. Schofield, C.P. Wroth, Critical State Soil Mechanics, McGraw-Hill, New York, 1968.
- 7. K.H. Roscoe, J.B. Burland, On the generalized stress-strain behaviour of wet clay. Cambridge University Press, 535-609, 1968.
- 8. Z.J. Shen, J.P. Wang, Stress and strain analysis of Hengshan reservoir rock-fill dam, J. Hydr. 4, 59-65, 1990.
- 9. C.B. Wu, Q. Yan, Y. Zhang, The Application of APDL in 3D non-linear finite element analysis of concrete face rock-fill dam, Proceedings of the 2010 Asia-Pacific Power and Energy Engineering Conference, Chengdu, April, 2010.
- 10. A. Frutuoso, A.P. Assis, M.M. Farias, P. Falcǎo, Numerical analysis of concrete face rockfill dam under three-dimensional conditions, Proceedings of the International Symposium on Dams in the Societies of the 21st Century, ICOLD-SPANCOLD - Dams and Reservoirs, Societies and Environment in the 21st Century, Spain, June, 2006.
- 11. J. Wang, J.J. Pan, B. Huang, Q. Chen, Settling behaviors of the highest Shuibuya concrete faced rock-fill dam, J. Hydr. Eng. 29(4), 160-166, (2010).
- 12. W.B. Wang, H. Kaare, Cyclic Behavior of Asphalt Concrete Used as Impervious Core in Embankment Dams, J. Geotech. Geoenviron. Eng., 137 (5), 536-544, 2011.
- 13. S. Feizi-Khankandi, A.A. Mirghasemi, A. Ghalandarzadeh, K. Hoeg, 2D Nonlinear Analysis of Asphaltic Concrete - Core Embankment Dams, The 12th International Conference of International Association for Computer Methods and Advances in Geomechanics, Goa, India, October, 2008.
- 14. C.Y. Fang, Z.Z. Liu, Stress-strain analysis of Aikou rockfill dam with asphalt- concrete core, Journal of Rock Mechanics and Geotechnical Engineering, 3(2), 186-192, 2011.
- 15. N. Janbu, Soil compressibility as determined by oedometer and triaxial test, Proceedings of The European Conference On Soil Mechanics And Foundation Engineering, Weisbaden, July, 1963.