Three-Dimensional Modal Analysis of Brezina Concrete Arch Dam, Algeria

Berrabah, Amina Tahar; Belharizi, Mohamed; Laulusa, André; Bekkouche, Abdelmalek

doi:10.5539/esr.v1n2p55

Cited by 6 publications

(14 citation statements)

References 4 publications

(2 reference statements)

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“…In [14], modal analyses were carried out for the dam alone model and for the two dam-foundation soil models described above. Both undamped and damped cases were considered.…”

Section: Dam-foundation Soil Modal Analysis Resultsmentioning

confidence: 99%

“…7a. The finesse of this mesh has been determined by performing a mesh sensitivity analysis in the study of modal responses of the damfoundation soil system [14,16]. In the present study, since no transient analysis is performed, there are no wave propagation parameters on which the mesh size could depend.…”

Section: Three-dimensional Modeling Of Brezina Concrete Arch Dammentioning

confidence: 99%

“…These two finite elements models are created using the finite element commercial package, ANSYS, with a mapped meshing [15]. The finesse of the mesh has been determined by performing a convergence analysis (mesh sensitivity) in the study of modal responses [14,16]. The two models exhibit 16,252 quadratic solid elements (SOLID186) and 19,035 nodes (Fig.…”

Section: Dam-foundation Soil Finite Element Modelsmentioning

confidence: 99%

“…As part of the comprehensive study undertaken on the dynamic response of the Brezina arch dam, located in El Beyadh, Algeria, and following a recent work [14], in this paper, the influences of the foundation soil and effects of the reservoir water on the modal response of the Brezina arch dam are investigated. The goal of the present analysis is to obtain the modal responses of the dam-water-foundation soil system.…”

mentioning

confidence: 99%

“…In Section 3, natural frequencies of the undamped dam-foundation soil models, determined in [14], are reviewed. Section 4 studies the dam-water-foundation soil models, and presents sloshing and modal analysis results.…”

mentioning

confidence: 99%

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Fluid–structure interaction of Brezina arch dam: 3D modal analysis

Amina

Belharizi²,

Laulusa³

et al. 2015

Engineering Structures

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“…In [14], modal analyses were carried out for the dam alone model and for the two dam-foundation soil models described above. Both undamped and damped cases were considered.…”

Section: Dam-foundation Soil Modal Analysis Resultsmentioning

confidence: 99%

Section: Three-dimensional Modeling Of Brezina Concrete Arch Dammentioning

confidence: 99%

Section: Dam-foundation Soil Finite Element Modelsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Fluid–structure interaction of Brezina arch dam: 3D modal analysis

Amina

Belharizi²,

Laulusa³

et al. 2015

Engineering Structures

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Soil-fluid-structure interaction applied to the Oued Taht dam (taking into account the membrane effect).

et al. 2018

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The objective of this work is to analyze the dynamic behavior (modal behavior) of the "Oued Taht" arch dam located at MASCARA, taking into consideration the effect of soil-fluid-structure interaction. The finite element code "Ansys" was chosen for the dynamic modeling of the dam that is the subject of this study. Three hypotheses were used for soil-structure interaction modeling; model with embedded base which corresponds to the case where the phenomenon of interactions soil-structure is neglected, model with ground of foundation without mass which consists in taking into account the kinematic component of interaction soil structure and neglecting the inertial component and the model with foundation soil with mass where the two components of soil-structure interaction are taken into account. For the fluid, the model of added masses (equivalent to the westergaard approach) using the SURF element available in the Ansys code library was used. A comparison between the different models of the "Oued Taht" dam was made; it has been found that the taking into account of the soil-fluid-structure interaction phenomenon modifies the period of the system and that the modeling of the dam with and without fluid gives a very important difference of the periods. The results obtained were compared with those of the "Brezina" dam, which is a gravity dam located in BAYADH. The work has shown that the periods of the "Oued Taht" dam with soil-fluid-structure interaction modeling are very out of phase with the periods without fluid modeling (taking into account only the soilstructure interaction phenomenon). which is not the case for the Brezina dam where the periods for the two models are getting closer. The periods between the two models mentioned before are close to the dam of Brézina because the latter is a dam which participates much more by its own weight than by its vault (thickness of the vault varies between 36.3 m at the base and 5m in crest) which is the opposite for the dam "Oued Taht" which participates by its vault (constant thickness of 7 m) thus the membrane effect is present, which is translated by the shift of the periods between the empty case and the filled case.

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