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Structural Engineering and Mechanics Volume 48, Number 1, October10 2013 , pages 17-39 DOI: https://doi.org/10.12989/sem.2013.48.1.017 |
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A smeared crack model for seismic failure analysis of concrete gravity dams considering fracture energy effects |
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Mohammad Amin Hariri-Ardebili, Seyed Mahdi Seyed-Kolbadi and
Hasan Mirzabozorg
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| Abstract | ||
| In the present paper, a coaxial rotating smeared crack model is proposed for mass concrete in three-dimensional space. The model is capable of applying both the constant and variable shear transfer coefficients in the cracking process. The model considers an advanced yield function for concrete failure under both static and dynamic loadings and calculates cracking or crushing of concrete taking into account the fracture energy effects. The model was utilized on Koyna Dam using finite element technique. Damwater and dam-foundation interactions were considered in dynamic analysis. The behavior of dam was studied for different shear transfer coefficients considering/neglecting fracture energy effects. The results were extracted at crest displacement and crack profile within the dam body. The results show the importance of both shear transfer coefficient and the fracture energy in seismic analysis of concrete dams under high hydrostatic pressure. | ||
| Key Words | ||
| concrete gravity dam; smeared crack model; shear transfer coefficient; fracture energy | ||
| Address | ||
| Mohammad Amin Hariri-Ardebili: Department of Civil, Environmental and Architectural Engineering, University of Colorado at Boulder, ECCE 168, UBC 80309-0428, Boulder, CO, USA Seyed Mahdi Seyed-Kolbadi and Hasan Mirzabozorg: Department of Civil Engineering, K. N. Toosi University of Technology, Vali-asr St., 15875-4416, Tehran, Iran | ||