A case study on the seismic performance of earth dams

Pelecanos, L.; KONTOE, S.; ZDRAVKOVIĆ, L.

doi:10.1680/geot.sip.15.p.009

Cited by 2 publications

(3 citation statements)

References 24 publications

(35 reference statements)

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“…As far as dynamic response is concerned, deformation properties are of interest and govern the natural periods and modes of vibration of the dam. More information about the material properties may be found by Pelecanos (2013) and Pelecanos et al (2015) and issues related to its vibration in the narrow canyon by Pelecanos et al (2019a). In the first part, the dam is considered to be built on rigid bedrock foundation and therefore the dam foundation layer is ignored.…”

Section: Case Study: La Villita Dam Mexicomentioning

confidence: 99%

“…The dynamic FE method proved to be a superior technique and therefore dominated the seismic dam analysis activities. Indeed, a plethora of pseudo-static (Kontoe et al, 2013) and dynamic FE studies followed and nonlinear FE analysis (Elia et al, 2011;Pelecanos et al, 2012a;2012b;2013b;2015;2018a;Han et al, 2016, Shire et al, 2013 is now considered the current state-of-the-art. Nevertheless, dam-reservoir interaction effects are considered insignificant for earth dams (Pelecanos et al, 2013a;2017;2019b).…”

Section: Dynamic Analysis Of Earth Damsmentioning

confidence: 99%

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Comparison of shear-beam and dynamic finite-element modal analysis of earth dams

Pelecanos

2018

Smart Dams and Reservoirs

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SYNOPSISThis paper compares two well-established but different methods for frequency-domain analysis of earth dams. The first method is shear beam approach which is an analytical technique for estimating the natural modes and frequencies of vibration of earth dams. The second method is the dynamic finite-element modal analysis approach which is a numerical technique that can predict the actual dynamic response of earth dams. Although both methods attempt to predict the same physical mechanism, they usually yield completely different results. This paper aims at quantifying the "error" from shear-beam analysis, as compared to the more accurate finite-element analysis.

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Section: Case Study: La Villita Dam Mexicomentioning

confidence: 99%

Section: Dynamic Analysis Of Earth Damsmentioning

confidence: 99%

Comparison of shear-beam and dynamic finite-element modal analysis of earth dams

Pelecanos

2018

Smart Dams and Reservoirs

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“…Earthquake seismicity can cause additional loads on dam and increasing the pore water pressure also the field investigation showed that the slope instability is the main effect of earthquake and cause failure of the dam [3]. Also, an earthquake can cause structural failure and excitation of an embankment dam, which can result in the failure of the whole dam.…”

Section: Introductionmentioning

confidence: 99%

Physical Modeling of Seismic Response of Makhool Dam Subjected to the Halabja Earthquake

Ali,

Al-Shukur

2024

MMEP

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Earth dam can be considered as the most ancient type of embankment dam that can be constructed with natural materials such as natural soils, rocks, clay and gravel. Zone earthfill dam is typically composed of two main parts: central core and shell that is filled with gravel and rock to strengthen the stability of the whole body of dam. Many reasons can cause the failure of an earth dam including hydraulic failure, structural failure and seepage failure. Earthquake failure can be considered as a structural failure, therefore, it is important to study the dynamic response of earth dam during the earthquake. This paper presents a seismic analysis on zone-earth dam subjected to earthquake excitation by using a shaking table with dimensions (170×150) cm, on which maximum acceleration, pore-water pressure, and displacement were calculated. The Makhool dam is considered as a case study that is located on Tigris River in Iraq with total length 3670 m. The physical model was simulated using a scale of 1:400 that fit the dimensions of the container (100×50×60) cm and subjected the model to the Halabja earthquake, with a magnitude of 7.3 (Richter scale) according to the Iraq Meteorological Organization and Seismology. Three values of earthquake (0.04 g, 0.06 g, and 0.08 g) were used with a time of 10 seconds, and the parameters were calculated on two nodes on the physical model. Pore-water pressure increases with an increase in the value of the earthquake and is larger at the dam base than the dam crest. Additionally, the displacement can be increased, which weakens the dam soil and affects the stability of the dam. The value of x-acceleration will be reduced at the end of the earthquake, which means the input acceleration affects soil properties.

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A case study on the seismic performance of earth dams

Cited by 2 publications

References 24 publications

Comparison of shear-beam and dynamic finite-element modal analysis of earth dams

Comparison of shear-beam and dynamic finite-element modal analysis of earth dams

Physical Modeling of Seismic Response of Makhool Dam Subjected to the Halabja Earthquake

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