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http://dx.doi.org/10.7843/kgs.2017.33.5.25

Probabilistic Analysis of Liquefaction Induced Settlement Considering the Spatial Variability of Soils  

Bong, Tae-Ho (School of Civil and Construction Engrg., Oregon State Univ.)
Kim, Byoung-Il (Dept. of Civil and Environmental Engrg., Myongji Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.33, no.5, 2017 , pp. 25-35 More about this Journal
Abstract
Liquefaction is one of the major seismic damage, and several methods have been developed to evaluate the possibility of liquefaction. Recently, a probabilistic approach has been studied to overcome the drawback of deterministic approaches, and to consider the uncertainties of soil properties. In this study, the spatial variability of cone penetration resistance was evaluated using CPT data from three locations having different variability characteristics to perform the probabilistic analysis considering the spatial variability of soil properties. Then the random fields of cone penetration resistance considering the spatial variability of each point were generated, and a probabilistic analysis of liquefaction induced settlement was carried out through CPT-based liquefaction evaluation method. As a result, the uncertainty of soil properties can be overestimated when the spatial variability is not considered, and significant probabilistic differences can occur up to about 30% depending on the allowable settlement.
Keywords
Liquefaction; CPT (Cone Penetration Test); Spatial variability; Scale of fluctuation; Settlement; Probabilistic analysis;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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