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| Titel |
Investigating the influence of topographic irregularities and two-dimensional effects on surface ground motion intensity with one- and two-dimensional analyses |
| VerfasserIn |
G. Ç. İnce, L. Yılmazoğlu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 14, no. 7 ; Nr. 14, no. 7 (2014-07-18), S.1773-1788 |
| Datensatznummer |
250118543
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| Publikation (Nr.) |
 copernicus.org/nhess-14-1773-2014.pdf |
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| Zusammenfassung |
| In this work, the surface ground motion that occurs during an earthquake in
ground sections having different topographic forms has been examined with one
and two dynamic site response analyses. One-dimensional analyses were
undertaken using the Equivalent-Linear Earthquake Response Analysis (EERA)
program based on the equivalent linear analysis principle and the Deepsoil
program which is able to make both equivalent linear and nonlinear analyses
and two-dimensional analyses using the Plaxis 8.2 software. The viscous
damping parameters used in the dynamic site response analyses undertaken with
the Plaxis 8.2 software were obtained using the DeepSoil program. In the
dynamic site response analyses, the synthetic acceleration over a 475-year
return period representing the earthquakes in Istanbul was used as the basis
of the bedrock ground motion. The peak ground acceleration obtained different
depths of soils and acceleration spectrum values have been compared. The
surface topography and layer boundaries in the 5-5' cross section which
cuts across the study area west to east were selected in order to examine the
effect of the land topography and layer boundaries on the analysis results,
and were flattened and compared with the actual status. The analysis results
showed that the characteristics of the surface ground motion change in
relation to the varying local soil conditions and land topography. |
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