Abstract
Concrete-faced rockfill dams (CFRD) are a type of embankment dam that is being widely used and rapidly developed. Since the dam failures, because the strong ground motions will cause disastrous results, the safety of CFRDs during an earthquake is an influential engineering and social problem. CFRDs are generally known as safe, economical, and highly adaptive and have thereby become a vying dam type. This paper presents three-dimensional earthquake behavior of the Çay CFRD under spatially varying earthquake ground motion. Spatial variability of an earthquake is considered with wave passage, incoherence, and site-response effects. The dam–reservoir–foundation interaction system is modeled using finite element method with three different soil conditions for spatially varying ground motion. The hydrodynamic pressure effect of the reservoir water is considered with three-dimensional fluid finite elements based on the Lagrangian approach. Besides, one-dimensional spring-damper elements are used in the boundaries of the finite element model of the reservoir to consider non-reflecting boundary conditions. Numerical solutions indicated that the site-response effect case is more effective than uniform ground motion, wave passage, and incoherence effects. Furthermore, it was seen that the existence of different soil strata is influential on the seismic behavior of the CFR dam to site-response effects.
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Hacıefendioğlu, K., Kartal, M.E. 3D seismic analysis concrete-faced rockfill dam subjected to simulated spatially varying ground motion. Arab J Geosci 15, 42 (2022). https://doi.org/10.1007/s12517-021-09313-3
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DOI: https://doi.org/10.1007/s12517-021-09313-3