Transient analysis of dam–reservoir interaction including the reservoir bottom effects

Küçükarslan, S.; Coşkun, Safa Bozkurt; Taşkın, Beyza

doi:10.1016/j.jfluidstructs.2005.05.004

Cited by 36 publications

(26 citation statements)

References 21 publications

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“…This is again in agreement with the earlier observation of Zangar [Zangar, 1952;Zangar and Haefeli, 1952] who suggested that the maximum hydrodynamic pressure for dams with an inclined upstream face occurs at a vertical distance from the base approximately equal to one third of the reservoir height. The validity of the adopted reservoir modeling approach with solid finite elements has already been extensively verified against available closed form solutions [Chopra, 1967a] and other numerical studies [Kucukarslan et al, 2005]. Therefore, since it is considered an appropriate approach to model hydrodynamic pressures, the numerically predicted hydrodynamic pressures are used herein as a benchmark against which the Zangar [1952] predictions are assessed.…”

Section: Hydrodynamic Pressuresmentioning

confidence: 99%

“…Several methods exist, including finite element (FE) [Demirel, 2015] and boundary element (BE) approaches or coupled BE-FE [Antes and Von-Estorff, 1987;Yazdchi et al, 1999]. The reservoir can be discretized using elastic "solid finite elements" [Wilson, 1975;Zienkiewicz et al, 1986;Wilson, 1995;Dakoulas and Gazetas, 2008;Pelecanos et al, 2013] in which the bulk modulus of the water is assigned to the elements with a very small shear modulus, or "fluid elements", following Eulerian [Kucukarslan et al, 2005;Gogoi and Maity, 2007;Fan and Li, 2008] or Lagrangian [Akkose et al, 2008;Bilici et al, 2009;Kartal and Bayraktar, 2013] or MPM [Kularathna and Soga, 2017a; …”

Section: Introductionmentioning

confidence: 99%

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The Effects of Dam–Reservoir Interaction on the Nonlinear Seismic Response of Earth Dams

Pelecanos

Kontoe

Zdravković

2018

Journal of Earthquake Engineering

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The objective of this study is to investigate the effects of damreservoir interaction (DRI) on the nonlinear seismic response of earth dams. Although DRI effects have for long been considered as insignificant for earth dams, that conclusion was mainly based on linear elastic investigations which focused only on the acceleration response of the crest without examining the seismic shear stresses and strains within the dam body. The present study explores further the impact of DRI focusing on the nonlinear behavior of earth dams. The effects of reservoir hydrodynamic pressures are investigated in terms of both seismic dam accelerations and nonlinear dynamic soil behavior (seismic shear stresses and strains). It is shown that although dam crest accelerations are indeed insensitive to DRI, the stress and strain development within the dam body can be significantly underestimated if DRI is ignored. ARTICLE HISTORY

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Section: Hydrodynamic Pressuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effects of Dam–Reservoir Interaction on the Nonlinear Seismic Response of Earth Dams

Pelecanos

Kontoe

Zdravković

2018

Journal of Earthquake Engineering

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“…(8) and (16) describe the complete finite-element discretized equations for the gravity dam-water-foundation rock interaction problem and can be written in an assembled form as [25,26]:…”

Section: The Coupled Fluid-structure Equationmentioning

confidence: 99%

Hybridizing two-stage meta-heuristic optimization model with weighted least squares support vector machine for optimal shape of double-arch dams

Mahani

Shojaee

Salajegheh

et al. 2015

Applied Soft Computing

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“…According to the finite element theory equations governing the dam is as follows (Kucukarslan, 2003): In Equation (2) Equations 1 and 7 are the equations of fluid and dam respectively. When these two media are placed in the vicinity of each others, the interaction effects between them governed the behavior of the system as follows:…”

Section: Euler -Lagrange Formulation For Dynamic Interaction Of Dam-rmentioning

confidence: 99%

“…The dam structure has crest width of 14.8m, bottom width 70m, width of dam at the level of initial notch 19.25m and the tallest of monoliths which is 103m. In order to determine the hydrodynamic pressure on the dam due to horizontal ground motion under the assumption of infinite reservoir, Sommerfeld truncation boundary condition (Kucukarslan, 2003) was applied at a distance L 3H 300m from the dam (L = reservoir width and H = Dam height) (Chopra, 1967).The depth of the reservoir is 91.75 m. Finite element model for the dam -reservoir system is given in figure 7. …”

Section: Analysis Of Koyna Dammentioning

confidence: 99%

Fracture analysis of concrete gravity dam under earthquake induced loads

Mansouri¹,

Neshaei²,

Aghajany³

2011

Journal of Applied Sciences and Environmental Management

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ABSTRACT:In this paper, seismic fracture behavior of the concrete gravity dam using finite element (2D) theory has been studied.Bazant model which is non-linear fracture mechanics criteria as a measure of growth and smeared crack was chosen to develop profiles of the crack. Behavior of stress -strain curves of concrete as a simplified two-line, dam and reservoir system using the formulation of the Euler -Lagrange was chosen. According to the above models, Koyna concrete gravity dam were investigated by the 1967 earthquake record. The results provide profiles of growth and expansion first with the effects of reservoir and second without it. Comparison of the obtained results shows good agreement with the works of the other researchers. @ JASEM Keywords: Seismic fracture; Smeared crack; Non-linear fracture mechanics; Concrete gravity dam.The seismic behavior of concrete dams has been the subject of extensive research during the past decade concerning dam safety during earthquakes. Chopra et al (1972), studies seismic behavior of dam's crack path by using linear elastic analysis. The analysis shows, places that are in damage or and risk of the concerning stability of structure. Pal (1976) was the first researcher who examined Koyna dam by using non-linear analysis. In this research, assuming no effect of reservoir, being rigid foundation, smeared crack model use for crack expansion and strength criteria to crack growth, Koyna dam was analyzed and was shown that the results of material properties and element size are very sensitive. Figure 1(a) crack zone in the dam of which resulting from this analysis are shown. Skrikerud (1986) studied concrete dams through a case study on Koyna dam and by employing discrete crack for crack growth and strength criteria for crack expansion. In their study the growth of crack at each step of growth, the length of the crack tip element was considered that this is the final results were effective. He interpreted the results of their model, due to expansion mismatch with the cracking in their analysis of real crack in the dam, no match Foundation and reservoir interaction and lack of real values of characteristic parameters dam announced. Crack profiles from the analysis left in Figure 1(b) are presented. El-Aidi and Hall (1989) did a research on seismic fracture of Pine flat dam. Smeared crack model and strength criteria for crack expansion and growth were used. In their analysis is considering the reservoir -dam and foundation -dam interaction was crack profile presented. Figure 1(c), cracking in the dam will provide analysis. Fenves and Vargas-Loli also studied Pine flat dam by using fracture mechanics criteria for crack growth and smeared crack model to crack expand (Uang and Bertero, 1990). They apply different coefficients of Taft earthquake record, regardless of the effect by foundation; Pine Flat dam in two cases with and without the effect of the reservoir was analyzed. In this study the effect of hydrodynamic pressure on the seismic behavior in the dam with the crack profile...

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Transient analysis of dam–reservoir interaction including the reservoir bottom effects

Cited by 36 publications

References 21 publications

The Effects of Dam–Reservoir Interaction on the Nonlinear Seismic Response of Earth Dams

The Effects of Dam–Reservoir Interaction on the Nonlinear Seismic Response of Earth Dams

Hybridizing two-stage meta-heuristic optimization model with weighted least squares support vector machine for optimal shape of double-arch dams

Fracture analysis of concrete gravity dam under earthquake induced loads

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