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http://dx.doi.org/10.7843/kgs.2020.36.10.57

Evaluation of Liquefaction Triggering for the Pohang Area Based on SPT and CPT Tests  

Kim, Yeon-Jun (Dept. of Civil & Environmental Eng., KAIST)
Ko, Kil-Wan (Dept. of Civil & Environmental Eng., KAIST)
Kim, Byung-Min (Dept. of Urban and Environmental Eng., UNIST)
Park, Du-Hee (Dept. of Civil and Environmental Eng., Hanyang Univ.)
Kim, Ki-Seog (Heesong Khmer Corporation)
Han, Jin-Tae (Dept. of Infrastructure Safety Department, Seismic Safety Research Center, KICT)
Kim, Dong-Soo (Dept. of Civil & Environmental Eng., KAIST)
Publication Information
Journal of the Korean Geotechnical Society / v.36, no.10, 2020 , pp. 57-71 More about this Journal
Abstract
Liquefaction-induced sand boils were observed during the Pohang earthquake (Moment magnitude, 5.4) on November 15, 2017, specifically in the region of agricultural fields and park areas near the epicenter. This was recorded as the first observed liquefaction phenomenon in Korea. This paper analyzes liquefaction potentials at the key sites at Pohang area. The simplified methods and current design standard were used to evaluate the occurrence of liquefaction. The seismic demand was estimated based on the NGA-WEST2 ground motion prediction equations (GMPEs). The liquefaction resistance of the ground was determined using the in-situ tests: standard penetration test (SPT) and cone penetration test (CPT). The liquefaction potentials were quantified by liquefaction potential index (LPI), which were compared with those from the previous studies.
Keywords
Liquefaction; Simplified method; Triggering evaluation; Pohang earthquake; Seismic design code; LPI; LSN;
Citations & Related Records
Times Cited By KSCI : 20  (Citation Analysis)
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