Performance analysis of Tohoku-Shinkansen viaducts affected by the 2011 Great East Japan earthquake

Mitsuyoshi Akiyama, Dan M. Frangopol, Keita Mizuno

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    Tohoku-Shinkansen viaducts in eastern Japan were designed in accordance with specifications published in the 1970s. They have less shear reinforcement than required by current design specifications. Consequently, the No. 5 Inohana viaducts of Tohoku-Shinkansen failed in shear during the 2003 Sanriku-Minami earthquake. The viaducts were retrofitted by means of steel jacketing so that they had sufficient shear capacity. The retrofitted columns of the viaducts performed well during the 2011 Great East Japan earthquake. However, there is a lack of understanding of the impact of these retrofitting interventions on the vulnerability of the viaduct. It is important to recognise the relationship between the damage to the Shinkansen viaduct with retrofitted reinforced concrete columns and the ground motion intensity. After a brief review of the history of the performance of Shinkansen viaducts to several earthquakes prior to the 2011 Great East Japan earthquake, this paper presents fragility curves of the retrofitted and non-retrofitted Tohoku-Shinkansen viaducts based on nonlinear dynamic analyses and Monte Carlo simulation. It was found that the median of the fragility curve associated with the ultimate limit state for retrofitted viaduct is at least five times larger than that for as-built viaduct.

    Original languageEnglish
    Pages (from-to)1228-1247
    Number of pages20
    JournalStructure and Infrastructure Engineering
    Volume10
    Issue number9
    DOIs
    Publication statusPublished - 2014

    Fingerprint

    viaduct
    Earthquakes
    earthquake
    Specifications
    Retrofitting
    Reinforced concrete
    Reinforcement
    analysis
    Steel
    reinforced concrete
    ground motion
    reinforcement
    vulnerability
    steel

    Keywords

    • bridges
    • concrete structures
    • reliability
    • retrofitting
    • seismic engineering

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Geotechnical Engineering and Engineering Geology
    • Safety, Risk, Reliability and Quality
    • Building and Construction
    • Mechanical Engineering
    • Ocean Engineering

    Cite this

    Performance analysis of Tohoku-Shinkansen viaducts affected by the 2011 Great East Japan earthquake. / Akiyama, Mitsuyoshi; Frangopol, Dan M.; Mizuno, Keita.

    In: Structure and Infrastructure Engineering, Vol. 10, No. 9, 2014, p. 1228-1247.

    Research output: Contribution to journalArticle

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