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ISSN : 1226-525X(Print)
ISSN : 2234-1099(Online)
Journal of the Earthquake Engineering Society of Korea Vol.29 No.5 pp.285-293
DOI : https://doi.org/10.5000/EESK.2025.29.5.285

System-Reliability-Based Disaster Resilience Analysis of Railway Networks Under Seismic Hazards

Kim Minsun1), Park Hyeonju2), Kim, Ji Hyeon3), Kim Taeyong4)*
1)Postdoctoral Researcher, Track & Civil Infrastructure Division, Korea Railroad Research Institute, 2)Master’s Student, Department of Civil Systems Engineering, Ajou University, 3)Senior Researcher, Track & Civil Infrastructure Division, Korea Railroad Research Institute, 4)Assistant Professor, Department of Civil Systems Engineering, Ajou University

Abstract

The concept of resilience has gained increasing attention amid growing urbanization and rising vulnerability to infrastructure. While various methodologies exist for evaluating the resilience of lifeline systems, few address the distinct structural features and failure modes of railway networks. This study refines existing approaches by incorporating characteristics unique to high-speed railways, with a focus on two key aspects. First, we define the structure of railway networks by identifying nodes and links, and deriving link-specific resilience criteria based on the fragility characteristics and recovery profiles of their structural components. Second, we utilize real data from the Korean railway system to quantify the performance degradation caused by component failures during seismic events. To assess the framework’s applicability, we use a simplified network and a more complex one integrating Korea’s Honam Line and Honam High-Speed Line. The framework effectively identifies critical scenarios and provides a valuable tool for decision-makers in assessing seismic risk and planning recovery for railway infrastructure.

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    Reference

    Journal Abbreviation J. Earthq. Eng. Soc. Korea
    Frequency Bimonthly
    Doi Prefix 10.5000/EESK
    Year of Launching 1997
    Publisher Earthquake Engineering Society of Korea
    Indexed/Tracked/Covered By