Seismic Fragility Analysis of Base-Isolated LNG Storage Tank for Selecting Optimum Friction Material of Friction Pendulum System

Ji Su Kim, Jung Pyo Jung, Ji Hoon Moon, Tae Hyung Lee, Jong Hak Kim, Tong Seok Han

Research output: Contribution to journalArticle


The objective of this study is to establish a system for selecting the optimum friction material to meet the seismic performance requirements of a liquefied natural gas tank with a friction pendulum system (FPS). A methodology for determining the optimum frictional material using seismic fragility analysis is suggested, and it is applied to materials with various frictional coefficients for FPS. Seismic fragility curves with two different limit states are developed to determine the optimum friction material, and a methodology for combining fragility curves is proposed. The analysis shows that a lower friction coefficient for FPSs is more appropriate for preventing failure in FPSs and the superstructure investigated in this study.

Original languageEnglish
Article number1950010
JournalJournal of Earthquake and Tsunami
Issue number2
Publication statusPublished - 2019 Apr 1


All Science Journal Classification (ASJC) codes

  • Oceanography
  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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