PSI - Issue 42

H. Mazighi et al. / Procedia Structural Integrity 42 (2022) 1714–1720 H.Mazighi and M.K.Mihoubi / Structural Integrity Procedia 00 (2019) 000 – 000

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It can be seen that the high displacement obtained in the first case leads to more damage than the second case especially at the base level which induced breaking of the structure.

a b Fig.6. Tensile damage due to (a) Koyna earthquake; (b) Saguenay earthquake

5. Conclusion The Concrete Damage Plasticity (CDP) model has been successfully applied to simulate the tensile damage in concrete gravity dam under two different earthquakes data with different time history. This paper aims to study the effect of the peak ground acceleration on the dam behavior by calculating the displacement at the crest and the tensile damage furthermore. The results show that only peak acceleration affects considerably the stability of the dam by causing important displacements at the crest of the dam leads to more damage at the base level and upper dam. To minimize damage, we recommend building the structure on concrete with higher tensile strength and incline the upstream face to reduce the stress. References Bhattacharjee, S. S., Léger, P. 1993. Seismic cracking and energy dissipation in concrete gravity dams. Earthquake Engineering & Structural Dynamics, 22 (11), 991 – 1007. Ghaedi, K., Hejazi, F., Ibrahim, Z., Khanzaei, P. 2017. Flexible Foundation Effect on Seismic Analysis of Roller Compacted Concrete ( RCC ) Dams Using Finite Element Method Flexible Foundation Effect on Seismic Analysis of Roller Compacted Concrete ( RCC ) Dams Using Finite Element Method, (June). Ghrib, F., Tinawi, A. N. D. R. 1995. An application of damage mechanics for seismic, 24 (November 1993), 157 – 173. Hariri-ardebili, M. A., Seyed- kolbadi, S. M. 2015. Seismic cracking and instability of concrete dams : Smeared crack approach. Engineering failure analysis, 52 , 45 – 60. Javanmardi, F., Léger, P., Tinawi, R. 2005. Seismic structural stability of concrete gravity dams considering transient uplift pressures in cracks. Engineering Structures, 27 (4), 616 – 628. K.Chopra, A. 2001. Dynamics of structures theory and applications to earthquake engineering. Mansouri, A., Neshaei, M. A. L., Aghajany, R. 2011. Fracture analysis of concrete gravity dam under earthquake induced loads. Journal of Applied Sciences and Environmental Management, 15 (2), 317 – 325. Zhang, S., Wang, G., Yu, X. 2013. Seismic cracking analysis of concrete gravity dams with initial cracks using the extended finite element method. Engineering Structures, 56 , 528 – 543.