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Title

Dynamic analysis of concrete gravity dam considering Dam-Reservoir Interaction: Case study of Koyna Dam

Pages

  53-68

Abstract

 Today, construction of dams to collect and store river water for different consumption purposes including drinking, agriculture, and industry is inevitable. Nevertheless, dams are colossal structures that pose potential dangers to their downstream community and their failure can be catastrophic. Dynamic analysis of concrete dams is more complex than that of conventional structures due to the presence of a reservoir. This complexity mainly results from the dam-reservoir interactions in seismic conditions. In this study, the seismic response of Concrete gravity dams was investigated using ABAQUS finite element software in different conditions of full, half-full, and empty reservoir. To this end, Koyna Concrete gravity dam with specific geometric and physical characteristics was analyzed by applying Kobe earthquake records. The results from finite element analysis showed that the values of the main stresses in different modes of analysis were considerably significant. Most of these stresses occurred at the site of the downstream slope change (level of 66. 5 m), thus causing stress concentration in this area. Furthermore, according to the results, upon increasing the reservoir level, the amount and intensity of displacement fluctuations would increase, mainly due to the dam-reservoir interactions and effect of fluctuations in the hydrodynamic pressure of the reservoir in the time curve of the displacement in the crown of dam. In general, in case the reservoir is full, the levels of stress and displacement would be higher than those in other modes.

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    APA: Copy

    TARINEJAD, REZA, Anvarzadeh Maraghi, Arash, & Bour, AliAsghar. (2022). Dynamic analysis of concrete gravity dam considering Dam-Reservoir Interaction: Case study of Koyna Dam. HYDROGEOLOGY, 7(1 ), 53-68. SID. https://sid.ir/paper/1036876/en

    Vancouver: Copy

    TARINEJAD REZA, Anvarzadeh Maraghi Arash, Bour AliAsghar. Dynamic analysis of concrete gravity dam considering Dam-Reservoir Interaction: Case study of Koyna Dam. HYDROGEOLOGY[Internet]. 2022;7(1 ):53-68. Available from: https://sid.ir/paper/1036876/en

    IEEE: Copy

    REZA TARINEJAD, Arash Anvarzadeh Maraghi, and AliAsghar Bour, “Dynamic analysis of concrete gravity dam considering Dam-Reservoir Interaction: Case study of Koyna Dam,” HYDROGEOLOGY, vol. 7, no. 1 , pp. 53–68, 2022, [Online]. Available: https://sid.ir/paper/1036876/en

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