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

doi:10.1142/S1793431119500106

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

Department of Civil Engineering

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

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 language	English
Article number	1950010
Journal	Journal of Earthquake and Tsunami
Volume	13
Issue number	2
DOIs	https://doi.org/10.1142/S1793431119500106
State	Published - 1 Apr 2019

Keywords

Base isolation
combined fragility curve
friction pendulum system (FPS)
seismic fragility analysis

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10.1142/S1793431119500106

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

abstract = "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.",

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AU - Lee, Tae Hyung

AU - Kim, Jong Hak

AU - Han, Tong Seok

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AB - 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.

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KW - combined fragility curve

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

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