Re-calibrating the thresholds for the classification of liquefaction potential index based on the 2004 Niigata-ken Chuetsu earthquake

The liquefaction potential index (LPI) has been applied with increasing frequency to assess the potential for liquefaction-induced ground failures. This paper describes strategies used to re-calibrate the LPI using accepted methods for screening the liquefaction potential and evaluates its applicati...

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Bibliographic Details
Published in:Engineering geology 2014-02, Vol.169, p.30-40
Main Authors: Kang, Gi-Chun, Chung, Jae-Won, Rogers, J. David
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Exact sciences and technology
Geotechnics
GIS
Groundwater
Hazards
LPI
Microzonation
Nagaoka
Natural hazards: prediction, damages, etc
Soil mechanics. Rocks mechanics
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Summary:The liquefaction potential index (LPI) has been applied with increasing frequency to assess the potential for liquefaction-induced ground failures. This paper describes strategies used to re-calibrate the LPI using accepted methods for screening the liquefaction potential and evaluates its application to the seismic hazard mapping of political tracts. In this study soil profiles using standard penetration tests were evaluated using two methods, the Chinese criteria and the Bray–Sancio criteria. The LPI values were then calculated from these profiles at non-liquefied and liquefied sites in Nagaoka City during the 2004 Niigata-ken Chuetsu earthquake in Japan. Our results suggest that 50% of the liquefied sites exhibited LPI values >15, and 75% of the non-liquefied sites exhibited LPI values 21 and
ISSN:0013-7952
1872-6917
DOI:10.1016/j.enggeo.2013.11.012