PSI - Issue 13

Hichem Mazighi et al. / Procedia Structural Integrity 13 (2018) 1438–1441 H.MAZIGHI et al./ Structural Integrity Procedia 00 (2018) 000–000

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3.2. Influence on water pressure:

Fig. 3. Evolution of the water pressure in the dam body. (a) case 1 water pressure distribution; (b) case 2 water pressure distribution.

4. Conclusion: The Drucker Prager model has been successfully applied to simulate the water pressure distribution in concrete gravity dam under two geometries cases with two different hydrostatic pressure at the upstream face. This paper aims to study the effect of the upstream slope on global behavior of the dam by calculating the horizontal displacement and pressure inside the dam body, the results show that the upstream slope affects considerably the stability of the dam by additional vertical hydrostatic pressure leads to additional displacement at the crest of dam and water pressure at the bottom. A damage analysis is recommended considering these results before construction for optimal dam operation. Acknowledgements The work goes into the preparation of doctoral thesis at Laboratory Water Resource Mobilization and Enhancement (LMVR), National High School for Hydraulic (ENSH). References Barpi, F., and Valente, S. 2000. Numerical simulation of prenotched gravity dam models. J. Eng. Mech. Bhattacharjee, S. S., and Léger, P. 1995. Fracture response of gravity dams due to rise of reservoir elevation. J. Struct. Eng. Chappell, J. F., and Ingraffea, A. R. 1981. A fracture mechanics investigation of the cracking of Fontana Dam. Dept. of Structural Engineering Rep. No. 81-7, Cornell Univ., Ithaca, NY. Dewey, R. R., Ronald, W. R., and Saouma, V. E. 1994. Uplift modeling for fracture mechanics analysis of concrete dams. J. Struct. Eng. Feng, L. M., Pekau, O. A., and Zhang, C. H. 1996. Cracking analysis of arch dams by 3D boundary element method. J. Struct. Eng. Javanmardi, F., Léger, P., and Tinawi, R. 2005. Seismic water pressure in cracked concrete gravity dams: Experimental study and theoretical modeling. J. Struct. Eng. Pekau, O. and Zhu, X. 2008. Effect of seismic uplift pressure on the behavior of concrete gravity dams with a penetrated crack. J. Eng. Shi, M., Zhong, H., Ooi, E., Zhang, C., and Song, C. 2013. Modelling of crack propagation of gravity dams by scaled boundary polygons and cohesive crack model. Int. J. Fract. Zhu, X., and Pekau, O. A. 2007. Seismic behavior of concrete gravity dams with penetrated cracks and equivalent impact damping. Engrg. Struct.