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Structural Engineering and Mechanics Volume 72, Number 2, October25 2019 , pages 141-153 DOI: https://doi.org/10.12989/sem.2019.72.2.141 |
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Earthquake response of roller compacted concrete dams including galleries |
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Muhammet Karabulut and Murat Emre Kartal
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| Abstract | ||
| The effect of galleries on the earthquake behavior of dams should be investigated to obtain more realistic results. Therefore, a roller compacted concrete (RCC) dam with and without galleries are examined under ground motion effects. For this purpose, Cine RCC dam constructed in AydIn, Turkey, is selected in applications. The optimal mesh around galleries is investigated to obtain the most realistic results. Two-dimensional finite element models of Cine RCC dam with and without galleries are prepared by using ANSYS software. Empty and full reservoir conditions were taken into account in the time-history analyses. Hydrodynamic effect of the reservoir water was taken into account considering two-dimensional fluid finite elements based on the Lagrangian approach. It is examined that how principle stresses and displacements change by height and during earthquake. The dam-foundation-reservoir interaction was taken into consideration with contact-target element pairs. The displacements and principle stress components obtained from the linear analyses are compared each other for various cases of reservoir water and galleries. According to numerical analyses, the effect of galleries is clear on the response of RCC dam. Besides, hydrodynamic water effect obviously increases the principle stress components and horizontal displacements of the dam. | ||
| Key Words | ||
| Dynamic analysis of dams; gallery; Lagrangian approach; mesh optimization; roller compacted concrete dam | ||
| Address | ||
| Muhammet Karabulut /Zonguldak Bulent Ecevit University Murat Emre Kartal/Izmir Democracy University | ||