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http://dx.doi.org/10.14481/jkges.2017.18.4.31

Examination of Applicability of Liquefaction Potential Index to Seismic Vulnerability Evaluation of the Korean River Levees  

Ha, Iksoo (Department of Civil Engineering, Kyungnam University)
Moon, Injong (Korea Institute of Civil Engineering & Building Technology)
Yun, Jungwon (Department of Geospace Engrg., University of Science & Technology)
Han, Jintae (Korea Institute of Civil Engineering & Building Technology)
Publication Information
Journal of the Korean GEO-environmental Society / v.18, no.4, 2017 , pp. 31-40 More about this Journal
Abstract
In this study, a simple method to evaluate the seismic vulnerability of river levees was examined considering the structural characteristic of river levee, that is long, and the functional characteristic of river levee that performs temporary function against flood but is a permanent structure in the ordinary way. Considering the fact that one of the main failure modes of the levee during the earthquake are the settlement due to the strength reduction of the ground caused by the increase of the excess pore pressure in the levee body and foundation and the settlement due to liquefaction, the 2-dimensional section of the levee was regarded as the 1-dimensional section and the liquefaction potential index (LPI) for the regarded section was estimated. The estimated LPI was correlated with the seismic vulnerability of river levees. The relationship between the displacement of the levee crest caused by the earthquake and the seismic vulnerability of the levees was obtained from the results of previous researches and the correlation between the displacements of the levee crest computed by 2-dimensional dynamic coupled analyses and LPIs based on the results of 1-dimensional seismic response analyses was investigated. In connection with this correlation, as a result of examination of the correlation between LPI and the seismic vulnerability of the levee, it was concluded that the method for evaluation of the seismic vulnerability of the Korean river levee using LPI is applicable.
Keywords
River levee; Seismic vulnerability; Liquefaction potential index; Dynamic analysis; Earthquake;
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Times Cited By KSCI : 1  (Citation Analysis)
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