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| Titel |
Soil liquefaction potential in Eskişehir, NW Turkey |
| VerfasserIn |
H. Tosun, E. Seyrek, A. Orhan, H. Savaş, M. Türköz |
| 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 Science ; 11, no. 4 ; Nr. 11, no. 4 (2011-04-07), S.1071-1082 |
| Datensatznummer |
250009339
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| Publikation (Nr.) |
 copernicus.org/nhess-11-1071-2011.pdf |
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| Zusammenfassung |
| Liquefaction is one of the critical problems in geotechnical engineering.
High ground water levels and alluvial soils have a high potential risk for
damage due to liquefaction, especially in seismically active regions.
Eskişehir urban area, studied in this article, is situated within the
second degree earthquake region on the seismic hazard zonation map of Turkey
and is surrounded by Eskişehir, North Anatolian, Kütahya and Simav
Fault Zones. Geotechnical investigations are carried out in two stages: field
and laboratory. In the first stage, 232 boreholes in different locations
were drilled and Standard Penetration Test (SPT) was performed. Test pits at
106 different locations were also excavated to support geotechnical data
obtained from field tests. In the second stage, experimental studies were
performed to determine the Atterberg limits and physical properties of soils.
Liquefaction potential was investigated by a simplified method based on SPT.
A scenario earthquake of magnitude M=6.4, produced by Eskişehir Fault
Zone, was used in the calculations. Analyses were carried out for PGA levels
at 0.19, 0.30 and 0.47 g. The results of the analyses indicate that presence
of high ground water level and alluvial soil increase the liquefaction
potential with the seismic features of the region. Following the analyses,
liquefaction potential maps were produced for different depth intervals and
can be used effectively for development plans and risk management practices
in Eskişehir. |
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