Effects of surface shapes and geotechnical conditions on the ground motion

Düzgün, Oğuz Akın; Budak, Ahmet

doi:10.1007/s12205-015-0304-5

Cited by 8 publications

(3 citation statements)

References 31 publications

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“…This function reflects the amplitude attenuation and phase delay in the direction extending to infinity. The mapping functions of the element are given as (Chuhan and Chongbin 1987;Düzgün and Budak 2015):…”

Section: Numerical Modeling Of the Coupled Problemmentioning

confidence: 99%

Seismic Performance Evaluation of Concrete Gravity Dams Using an Efficient Finite Element Model

Rasa

Budak

Düzgün

2023

J. Vib. Eng. Technol.

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The effective numerical model that examines the seismic behavior of concrete gravity dams in the Laplace domain-Finite Element (FE) approach is presented. Further research on the potential damage levels and seismic performance of the dam body is done considering the simultaneous effect of horizontal (H) and vertical (V) components of six different earthquake loads. The time durations of the selected earthquakes vary from 10 sec to 80 sec with the magnitude range from 6.5 to 7.62 Mw. The Lagrangian fluid finite elements are utilized to model the near-field water domain. On the other hand, the fluid infinite elements are utilized to model the far-field water domain considering the rigid base rock foundation condition. The two-dimensional (2D) model is developed in FORTRAN 90 and MATLAB programming languages. The findings of this study suggest that the seismic behavior of concrete gravity dam affects not only with the seismic severity; the length and significant time duration of the earthquake are also important factor. The evaluation of the obtained results revealed that the longer length of significant earthquake duration leads to the high deformations, the high stress excursions and high probability of damages in the dam. 20.9% and 18.8% of the selected dam cross section experiences overstress condition under the H and H+V components of the Chi-Chi earthquake loads, respectively; which result the dam failure.

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Section: Numerical Modeling Of the Coupled Problemmentioning

confidence: 99%

Seismic Performance Evaluation of Concrete Gravity Dams Using an Efficient Finite Element Model

Rasa

Budak

Düzgün

2023

J. Vib. Eng. Technol.

Self Cite

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“…e damage of earthquake was found to be very selective of site conditions [10][11][12][13][14] which generally refer to local geological conditions, such as the near-surface soil layer, topography, and fracture zones. Existing studies [10,[15][16][17][18] have shown that the impact of site conditions on seismic damage is due to their significant ground motion amplification or deamplification effect.…”

Section: Introductionmentioning

confidence: 99%

The Characteristics of Seismic Response on Hard Interlayer Sites

Zhou

et al. 2020

Advances in Civil Engineering

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Based on the engineering geological data of a nuclear power plant site, nine engineering geological profiles were created with hard interlayers of different thicknesses. The equivalent linearization method of seismic motion segment-input used for one-dimensional nonlinear seismic response analysis was applied to study the effect of the interlayer thickness on the peak acceleration and the acceleration response spectra of the site seismic response. The results showed that there was an obvious influence of hard interlayer thickness on site seismic responses. With the increase of hard interlayer thickness, the site nonlinear effect on seismic responses decreased. Under the same thickness of the hard interlayer, the nonlinear effect of the site was strengthened with the higher input peak acceleration. In addition, the short-period acceleration response spectrum was found to be significantly influenced by the hard interlayer and showed that the longer the period, the less influence of the hard interlayer on the acceleration response spectrum coordinates. Moreover, the influenced frequency band was wider with the increase in the thickness of hard interlayer.

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“…Qiu et al [8] studied the influence of slope shape on the seismic response of gravel-soil slopes under conditions of oblique incident seismic waves. Düzgün and Budak [9] studied the differences in seismic responses between a single-faced slope and a ridge. Zhou et al [2] studied the influence of different seismic coefficients on the stability of convex slope under 3D conditions.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Slope Shape on Seismic Stability of a Slope

Zhang

Chang

Zhao

2020

Advances in Civil Engineering

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The slope shape is one of the most intuitive factors affecting the seismic stability of a slope. However, current research on this subject is mainly focused on statistical analysis and seismic response law, and the influence on seismic stability evaluation of the slope is rarely discussed. Furthermore, slope shapes are often simplified for easy numerical model building. In view of this, five slope models with different slope shapes are considered, and the time-history analysis method and Newmark method are chosen to evaluate the seismic stability of these slope models under different amplitudes. The purpose of this paper is to compare the seismic stability of slopes with different slope shapes and to study the feasibility of simplifying the slope shape when evaluating the seismic stability of a slope.

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Effects of surface shapes and geotechnical conditions on the ground motion

Cited by 8 publications

References 31 publications

Seismic Performance Evaluation of Concrete Gravity Dams Using an Efficient Finite Element Model

Seismic Performance Evaluation of Concrete Gravity Dams Using an Efficient Finite Element Model

The Characteristics of Seismic Response on Hard Interlayer Sites

Influence of the Slope Shape on Seismic Stability of a Slope

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