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Evaluation of the pseudostatic analyses of earth dams using Fe simulation and observed earthquake-induced deformations: case studies of Upper San Fernando and Kitayama dams.

Akhlaghi T, Nikkar A - ScientificWorldJournal (2014)

Bottom Line: Dynamic analyses were conducted to simulate the earthquake-induced deformations of the dams using the computer program Plaxis code.Then the pseudostatic seismic coefficient used in the design and analyses of the dams were compared with the seismic coefficients obtained from dynamic analyses of the simulated model as well as the other available proposed pseudostatic correlations.Based on the comparisons made, the accuracy and reliability of the pseudostatic seismic coefficients are evaluated and discussed.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Civil Engineering, University of Tabriz, Tabriz 5166116471, Iran.

ABSTRACT
Evaluation of the accuracy of the pseudostatic approach is governed by the accuracy with which the simple pseudostatic inertial forces represent the complex dynamic inertial forces that actually exist in an earthquake. In this study, the Upper San Fernando and Kitayama earth dams, which have been designed using the pseudostatic approach and damaged during the 1971 San Fernando and 1995 Kobe earthquakes, were investigated and analyzed. The finite element models of the dams were prepared based on the detailed available data and results of in situ and laboratory material tests. Dynamic analyses were conducted to simulate the earthquake-induced deformations of the dams using the computer program Plaxis code. Then the pseudostatic seismic coefficient used in the design and analyses of the dams were compared with the seismic coefficients obtained from dynamic analyses of the simulated model as well as the other available proposed pseudostatic correlations. Based on the comparisons made, the accuracy and reliability of the pseudostatic seismic coefficients are evaluated and discussed.

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Location of stress points for Upper San Fernando dam.
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Related In: Results  -  Collection


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fig9: Location of stress points for Upper San Fernando dam.

Mentions: Before starting calculation step, stress points are chosen on cross section of the dam. These points are located in the x direction with three points at each level as shown in Figures 9 and 10 (K for Kitayama and S for San Fernando), one point upstream side (having symbol L), one point middle part (with symbol M), and one point downstream side (with symbol R). 27 points constituting 9 lines and 30 points constituting 10 lines parallel to the x direction are, respectively, specified for Upper San Fernando (represented by S) dam and Kitayama (represented by K) dam.


Evaluation of the pseudostatic analyses of earth dams using Fe simulation and observed earthquake-induced deformations: case studies of Upper San Fernando and Kitayama dams.

Akhlaghi T, Nikkar A - ScientificWorldJournal (2014)

Location of stress points for Upper San Fernando dam.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3927942&req=5

fig9: Location of stress points for Upper San Fernando dam.
Mentions: Before starting calculation step, stress points are chosen on cross section of the dam. These points are located in the x direction with three points at each level as shown in Figures 9 and 10 (K for Kitayama and S for San Fernando), one point upstream side (having symbol L), one point middle part (with symbol M), and one point downstream side (with symbol R). 27 points constituting 9 lines and 30 points constituting 10 lines parallel to the x direction are, respectively, specified for Upper San Fernando (represented by S) dam and Kitayama (represented by K) dam.

Bottom Line: Dynamic analyses were conducted to simulate the earthquake-induced deformations of the dams using the computer program Plaxis code.Then the pseudostatic seismic coefficient used in the design and analyses of the dams were compared with the seismic coefficients obtained from dynamic analyses of the simulated model as well as the other available proposed pseudostatic correlations.Based on the comparisons made, the accuracy and reliability of the pseudostatic seismic coefficients are evaluated and discussed.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Civil Engineering, University of Tabriz, Tabriz 5166116471, Iran.

ABSTRACT
Evaluation of the accuracy of the pseudostatic approach is governed by the accuracy with which the simple pseudostatic inertial forces represent the complex dynamic inertial forces that actually exist in an earthquake. In this study, the Upper San Fernando and Kitayama earth dams, which have been designed using the pseudostatic approach and damaged during the 1971 San Fernando and 1995 Kobe earthquakes, were investigated and analyzed. The finite element models of the dams were prepared based on the detailed available data and results of in situ and laboratory material tests. Dynamic analyses were conducted to simulate the earthquake-induced deformations of the dams using the computer program Plaxis code. Then the pseudostatic seismic coefficient used in the design and analyses of the dams were compared with the seismic coefficients obtained from dynamic analyses of the simulated model as well as the other available proposed pseudostatic correlations. Based on the comparisons made, the accuracy and reliability of the pseudostatic seismic coefficients are evaluated and discussed.

Show MeSH
Related in: MedlinePlus