Post-Fracture redundancy evaluation of a twin box-girder shinkansen bridge in Japan

Weiwei Lin, Teruhiko Yoda, Nozomu Taniguchi, Heang Lam, Kazuki Nakabayashi

    研究成果: Conference contribution

    2 引用 (Scopus)

    抜粋

    As the national bridge inventory ages and traffic volumes increase, the government is spending more on maintaining their existing structures to extend the service life of the current bridge inventory. This includes two-girder bridges that are classified as fracture critical and non-redundant. Owing to the increased inspection costs associated with these fracture-critical bridges, there is a need to evaluate alternate load paths and to implement retrofit methods on existing bridge structures to avoid bridge replacement. In this paper, after-fracture redundancy of two-girder bridges is investigated through a case study for a four-span continuous steel-concrete composite twin boxgirder bridge. The finite element analysis was carried out to evaluate the load-carrying capacity after failure of one girder of the two-girder bridge. Two types of the main-girder damage, including fracture of the bottom flange only, and fracture of both bottom flange and the web were considered respectively in this study. Typical damage locations including mid-span section of the main girder and the sections near the intermediate support were also considered in the numerical analyses. On the basis of the numerical results, the present continuous steel-concrete composite box-girder bridge was classified as a redundant bridge, and the concrete deck was considered as the key member for ensuring the bridge redundancy after severe damages occurred on the main girders.

    元の言語English
    ホスト出版物のタイトルIABSE Conference, Guangzhou 2016: Bridges and Structures Sustainability - Seeking Intelligent Solutions - Report
    出版者International Association for Bridge and Structural Engineering (IABSE)
    ページ675-682
    ページ数8
    ISBN(電子版)9783857481420
    出版物ステータスPublished - 2016
    イベントIABSE Conference, Guangzhou 2016: Bridges and Structures Sustainability - Seeking Intelligent Solutions - Guangzhou, China
    継続期間: 2016 5 82016 5 11

    Other

    OtherIABSE Conference, Guangzhou 2016: Bridges and Structures Sustainability - Seeking Intelligent Solutions
    China
    Guangzhou
    期間16/5/816/5/11

    ASJC Scopus subject areas

    • Building and Construction

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  • これを引用

    Lin, W., Yoda, T., Taniguchi, N., Lam, H., & Nakabayashi, K. (2016). Post-Fracture redundancy evaluation of a twin box-girder shinkansen bridge in Japan. : IABSE Conference, Guangzhou 2016: Bridges and Structures Sustainability - Seeking Intelligent Solutions - Report (pp. 675-682). International Association for Bridge and Structural Engineering (IABSE).