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Title: Modelling dam-water dynamic interaction. numerical options and experimental validation
Authors: Lemos, J. V.
Gomes, J. P.
Pereira, S.
Keywords: Concrete dams;Dam-water interaction;Discrete elements
Issue Date: Jun-2019
Publisher: COMPDYN 2019 - 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
Abstract: The safety evaluation of concrete arch dams requires validated numerical procedures capable of representing the dynamic interaction between the dam and the reservoir during a seismic event. The proposed numerical model employs a discrete element formulation, which is ulti-mately intended to represent the potential dynamic slip of discontinuities in the rock mass foun-dation. The present paper focuses on the dam-water interaction modelling, which is a key com-ponent of the dynamic response of concrete arch dams. A fluid element discretization of the res-ervoir domain was adopted, based on Cundall's mixed discretization technique, which provides a displacement formulation for time domain analysis. Simple validation tests confirmed the ac-curacy of the solution. The model was also applied to a case study involving a recently built arch dam in Northern Portugal. In situ measurements of the dam dynamic response were made by two methods: forced vibration tests, performed before and after filling the reservoir, and a continuous monitoring systems installed in the structure. These measurements provided exten-sive data that allowed the dynamic characterization of the concrete arch structure and the vali-dation of the numerical model.
Appears in Collections:DBB/NMMR - Comunicações a congressos e artigos de revista

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