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http://dx.doi.org/10.5762/KAIS.2018.19.7.133

Earthquake-induced Liquefaction Areas and Safety Assessment of Facilities  

Jeon, Sang-Soo (Department of Civil & Urban Engineering, Inje University)
Heo, DaeYang (Urban Planning Division, Gyeongsangnam-do Provincial Government)
Lee, Sang-Seung (Department of Civil & Urban Engineering, Inje University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.7, 2018 , pp. 133-143 More about this Journal
Abstract
Liquefaction is one of secondary damages after earthquake and has been rarely reported until earthquake except Mw = 5.4 15 November 2017 Pohang earthquake in Korea. In recent years, Mw = 5.8 12 September 2016 Gyeongju earthquake and Mw = 5.4 15 November 2017 Pohang earthquake, which induced liquefaction, occurred in fault zone of Yangsan City located at south-eastern part of Korea. This explains that Korea is not safe against liquefaction induced by earthquake. In this study, the distance between the centroid of administrative district and the epicenter located at Yangsan fault, peak ground velocity (PGA) induced by both Mw = 5.0 and 6.5, and liquefaction potential index (LPI), which is calculated by using groundwater level and standard penetration test results of 274 in the area of Gimhae city located in adjacent to Nakdong river and across Yangsan fault, have been estimated and then kriging method using geographical information systems has been used to evaluate liquefaction effects on the damage of facilities. This study presents that Mw = 5.0 earthquake induces a small and low level of liquefaction resulting in slight damage of facilities but Mw = 6.5 earthquake induces a large and high level of liquefaction resulting in severe damage of facilities.
Keywords
Earthquake; GIS; Kriging; Liquefaction Potential Index (LPI); Safety of Facilities;
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Times Cited By KSCI : 1  (Citation Analysis)
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