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http://dx.doi.org/10.7843/kgs.2020.36.9.5

Evaluation of Dynamic Ground Properties of Pohang Area Based on In-situ and Laboratory Test  

Kim, Jongkwan (Korea Institute of Civil Engrg. and Building Technology)
Kwak, Tae-Young (Korea Institute of Civil Engrg. and Building Technology)
Han, Jin-Tae (Korea Institute of Civil Engrg. and Building Technology)
Hwang, Byong-Youn (Seoul National Univ.)
Kim, Ki-Seog (Heesong Geotek Co. Ltd.)
Publication Information
Journal of the Korean Geotechnical Society / v.36, no.9, 2020 , pp. 5-20 More about this Journal
Abstract
In 2017, after the Pohang earthquake, liquefaction phenomena were firstly observed after the observation of domestic earthquake by epicenter. In this study, various in-situ tests and laboratory tests were performed to determine the dynamic properties in (1) Songlim Park, (2) Heunghae-eup, Mangcheon-ri and (3) Heungan-ri, Pohang. As a site investigation, the standard penetration test (SPT), cone penetration test (CPT), multichannel analysis of surface wave (MASW), density logging, downhole test, and electrical resistivity survey were performed. In addition, cyclic triaxial test against sampled sand from site was also conducted. Based on the result, high ground water level and loose sand layer in shallow depth were observed for all sites. In addition, liquefaction resistance ratio of soil sampled from Songlim park was lower than those of Jumunjin sand, Toyoura sand, and Ottawa sand.
Keywords
Dynamic ground properties; Liquefaction; Pohang earthquake; Site investigation;
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Times Cited By KSCI : 1  (Citation Analysis)
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