Performance Evaluation of Gravity Dams Subjected to Near- and Far-Fault Ground Motion Using Euler Approaches

Altunışık, Ahmet Can; Sesli, Hasan; Hüsem, Metin; Akköse, Mehmet

doi:10.1007/s40996-018-0142-z

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…It was concluded that more general results could be obtained by the Westergaard method, whereas the results obtained by the Lagrange and Euler methods were closer to the actual behaviors of the dam. The Eulerian approach for hydrodynamic pressures was used to obtain the seismic performance of concrete gravity dam structures in their research [31]. Bayraktar et al [32] investigated the effect of reservoir length (1-4 times the dam height) on the seismic response of the 82.45 m high Folsom gravity dam to nearand far-fault ground motions using the Lagrange method.…”

Section: Introductionmentioning

confidence: 99%

Influences on the Seismic Response of a Gravity Dam with Different Foundation and Reservoir Modeling Assumptions

Wang

Zhang²,

Zhang

et al. 2021

Water

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The seismic design and dynamic analysis of high concrete gravity dams is a challenge due to the dams’ high levels of designed seismic intensity, dam height, and water pressure. In this study, the rigid, massless, and viscoelastic artificial boundary foundation models were established to consider the effect of dam–foundation dynamic interaction on the dynamic responses of the dam. Three reservoir water simulation methods, namely, the Westergaard added mass method, and incompressible and compressible potential fluid methods, were used to account for the effect of hydrodynamic pressure on the dynamic characteristics and seismic responses of the dam. The ranges of the truncation boundary of the foundation and reservoir in numerical analysis were further investigated. The research results showed that the viscoelastic artificial boundary foundation was more efficient than the massless foundation in the simulation of the radiation damping effect of the far-field foundation. It was found that a foundation size of 3 times the dam height was the most reasonable range of the truncation boundary of the foundation. The dynamic interaction of the reservoir foundation had a significant influence on the dam stress.

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Section: Introductionmentioning

confidence: 99%

Influences on the Seismic Response of a Gravity Dam with Different Foundation and Reservoir Modeling Assumptions

Wang

Zhang²,

Zhang

et al. 2021

Water

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“…The influence of reservoir length on the seismic response of gravity dams subjected to ground motions from local and far faults was investigated by Bayraktar (Bayraktar et al, 2010). Using Lagrangian (Akkose & Simsek, 2010) and Eulerian (Altunisik et al, 2019) approach, an investigation was carried out to determine the nonlinear seismic performance of concrete gravity dams exposed to near and far fault motions. Sevim (Sevim et al, 2011) demonstrated the impacts of water height and length on the seismic reactivity of arch dam-reservoirfoundation configurations considering the Lagrangian viewpoint.…”

Section: Introductionmentioning

confidence: 99%

Fluid-Structure Interaction: Impact of Reservoir Simulation Approach Considering Far-Field Boundary Condition in Dam Seismic Response

GOLDARAN¹

2022

EPSTEM

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“…Wang et al [5,23] studied the plastic damage response of the dam-reservoir-foundation system of the Koyna dam under near-fault and far-fault earthquakes and pointed out the important effect of near-fault earthquakes on dam damage. Altunisik et al [24] focused their research on the long-period velocity pulse contained in near-fault seismic records and found that, although the near-fault and far-fault records have the same PGA (peak ground acceleration), the larger stresses and displacements of the dam were attained under near-fault records. Moreover, according to the characteristics of near-fault earthquakes, many scholars have conducted correlation analysis.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Dynamic Response of a CC-RCC Combined Dam Structure under Oblique Incidence of Near-Fault Ground Motions

Zhang

et al. 2020

Applied Sciences

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The velocity pulse contained in near-fault ground motions have a tremendous impact on dam safety. Previous studies have mainly focused on the response of dams under near-fault seismic records without considering the obliquely incident seismic waves. In this study, the structure–soil interaction (SSI) is taken into consideration, and the nonlinear behavior of a conventional concrete roller-compacted concrete (CC-RCC) gravity dam under near-fault pulse records and non-pulse records is investigated with consideration of the obliquely incident P waves. On the basis of the dam site conditions, three groups of near-fault pulse records are chosen, and three corresponding non-pulse records are fitted by their acceleration response spectra. Combining with the viscous-spring artificial boundary, the wave input method is proposed to transform the near-fault seismic records into the equivalent nodal forces at the boundary of the foundation. The concrete damaged plasticity model is used for the nonlinear analysis. The results show that the pulse ground motions are more destructive than the non-pulse motions. The nonlinear behavior of the dam varies with the incidence angle of P waves and generally reaches a maximum at 60° and 75°, the worst damage occurs at the interface between different materials of the dam, and the spatial variation of its damage is very obvious under near-fault seismic records with various incidence angles. Therefore, the effect of the angle of obliquely incident seismic waves and near-fault pulse effect should be considered comprehensively in the seismic analysis of dams.

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Performance Evaluation of Gravity Dams Subjected to Near- and Far-Fault Ground Motion Using Euler Approaches

Cited by 5 publications

References 33 publications

Influences on the Seismic Response of a Gravity Dam with Different Foundation and Reservoir Modeling Assumptions

Influences on the Seismic Response of a Gravity Dam with Different Foundation and Reservoir Modeling Assumptions

Fluid-Structure Interaction: Impact of Reservoir Simulation Approach Considering Far-Field Boundary Condition in Dam Seismic Response

Nonlinear Dynamic Response of a CC-RCC Combined Dam Structure under Oblique Incidence of Near-Fault Ground Motions

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