RESEARCH PAPER
Effect of Dam–Rock Foundation Interaction Modeling on the Modal Ratio-Related Quantity of Beni Behdel and ‘El Mefrouch Multi-Arch Dams
1
Faculty of Science and Technology, Department of Civil Engineering and Public Works, University of Ain Temouchent, Route de Sidi Bel Abbes - BP 284, ‘Aïn Temouchent, Algeria
2
Faculty of Science and Technology, Department of Civil Engineering and Public Works, Engineering and Sustainable Development Laboratory, University Of Ain Temouchent, Route de Sidi Bel Abbes - BP 284, ‘Aïn Temouchent, Algeria
3
Faculty of Science and Technology, Department of Civil Engineering And Public Works, Smart Structure Laboratory, University of Ain Temouchent, Route de Sidi Bel Abbes - BP 284, ‘Aïn , Temouchent, Algeria
4
Faculty of Technology, Department of Civil Engineering, Laboratory of Materials and Mechanics of Structures (LMMS), University of Msila, PB 166 M’sila 28000, Algeria
Submission date: 2023-02-01
Acceptance date: 2023-05-03
Online publication date: 2023-07-16
Publication date: 2023-09-01
Acta Mechanica et Automatica 2023;17(3):452-459
KEYWORDS
ABSTRACT
Using the Beni Behdel dam and the El Mefrouch dam as example studies, this paper intends to clearly demonstrate how modeling of the interactions between rock foundations and dams impacts the modal behavior of these two multi-arch dams. The uniqueness of this study is that the modal behavior of each dam is represented in terms of related parameters (period, participation factor, ratio, and effective mass), and more precisely in terms of ratio (defined as the ratio between the participation factor of the mode i and the maximum participation factor), as opposed to other works that have expressed this behavior in terms of frequency. In this article, stiff rock foundation, massless rock foundation, and massed rock foundation are the three methods used to simulate dynamic interactions. The investigated dams are three-dimensionally simulated using the ANSYS finite elements code. The modeling of the rock foundation–dam interaction has an effect on the fundamental mode value, its location, and the related parameters, according to the results. Furthermore, it is found that the upstream–downstream direction is not always the most important direction for dams and that interaction modeling influences the resonance bandwidth, which affects the forecast of the resonance phenomenon.
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| eISSN: | 2300-5319 |
| ISSN: | 1898-4088 |
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