After-fracture redundancy analysis of an aged truss bridge in Japan

Weiwei Lin, Heang Lam, Teruhiko Yoda, Haijie Ge, Ying Xu, Hideyuki Kasano, Kuniei Nogami, Jun Murakoshi

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    In the next 20 years, more than half of the bridges in Japan would be in service for more than 50 years. These include truss bridges those are generally considered to be non-redundant and fracture critical. With ageing, these bridges are facing an increasing risk of bridge collapse under extreme conditions. Therefore, it is essential to evaluate alternate load paths on existing bridge structures to avoid bridge collapse or replacement. In this paper, after-fracture redundancy of truss bridges is investigated through a case study for a five-span continuous truss bridge. Field tests were performed, and the displacements on key sections were measured in the test. According to the experimental observations and test results, a numerical model capable of simulating the present truss bridge was built and was used to investigate the after-fracture redundancy of the target bridge. Fracture of truss members in typical locations was considered in the numerical analyses, and the ‘R’ values of both intact and damaged trusses were compared. On the basis of the numerical results, a critical member in this bridge was also determined.

    Original languageEnglish
    Pages (from-to)1-11
    Number of pages11
    JournalStructure and Infrastructure Engineering
    DOIs
    Publication statusAccepted/In press - 2016 Jun 22

    Fingerprint

    Redundancy
    replacement
    analysis
    Trusses
    test
    Numerical models
    Aging of materials

    Keywords

    • field test, FEM analysis
    • member fracture
    • Redundancy
    • truss bridge

    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

    After-fracture redundancy analysis of an aged truss bridge in Japan. / Lin, Weiwei; Lam, Heang; Yoda, Teruhiko; Ge, Haijie; Xu, Ying; Kasano, Hideyuki; Nogami, Kuniei; Murakoshi, Jun.

    In: Structure and Infrastructure Engineering, 22.06.2016, p. 1-11.

    Research output: Contribution to journalArticle

    Lin, Weiwei ; Lam, Heang ; Yoda, Teruhiko ; Ge, Haijie ; Xu, Ying ; Kasano, Hideyuki ; Nogami, Kuniei ; Murakoshi, Jun. / After-fracture redundancy analysis of an aged truss bridge in Japan. In: Structure and Infrastructure Engineering. 2016 ; pp. 1-11.
    @article{f3de803b39f445e4a36853e115dec507,
    title = "After-fracture redundancy analysis of an aged truss bridge in Japan",
    abstract = "In the next 20 years, more than half of the bridges in Japan would be in service for more than 50 years. These include truss bridges those are generally considered to be non-redundant and fracture critical. With ageing, these bridges are facing an increasing risk of bridge collapse under extreme conditions. Therefore, it is essential to evaluate alternate load paths on existing bridge structures to avoid bridge collapse or replacement. In this paper, after-fracture redundancy of truss bridges is investigated through a case study for a five-span continuous truss bridge. Field tests were performed, and the displacements on key sections were measured in the test. According to the experimental observations and test results, a numerical model capable of simulating the present truss bridge was built and was used to investigate the after-fracture redundancy of the target bridge. Fracture of truss members in typical locations was considered in the numerical analyses, and the ‘R’ values of both intact and damaged trusses were compared. On the basis of the numerical results, a critical member in this bridge was also determined.",
    keywords = "field test, FEM analysis, member fracture, Redundancy, truss bridge",
    author = "Weiwei Lin and Heang Lam and Teruhiko Yoda and Haijie Ge and Ying Xu and Hideyuki Kasano and Kuniei Nogami and Jun Murakoshi",
    year = "2016",
    month = "6",
    day = "22",
    doi = "10.1080/15732479.2016.1198393",
    language = "English",
    pages = "1--11",
    journal = "Structure and Infrastructure Engineering",
    issn = "1573-2479",
    publisher = "Taylor and Francis Ltd.",

    }

    TY - JOUR

    T1 - After-fracture redundancy analysis of an aged truss bridge in Japan

    AU - Lin, Weiwei

    AU - Lam, Heang

    AU - Yoda, Teruhiko

    AU - Ge, Haijie

    AU - Xu, Ying

    AU - Kasano, Hideyuki

    AU - Nogami, Kuniei

    AU - Murakoshi, Jun

    PY - 2016/6/22

    Y1 - 2016/6/22

    N2 - In the next 20 years, more than half of the bridges in Japan would be in service for more than 50 years. These include truss bridges those are generally considered to be non-redundant and fracture critical. With ageing, these bridges are facing an increasing risk of bridge collapse under extreme conditions. Therefore, it is essential to evaluate alternate load paths on existing bridge structures to avoid bridge collapse or replacement. In this paper, after-fracture redundancy of truss bridges is investigated through a case study for a five-span continuous truss bridge. Field tests were performed, and the displacements on key sections were measured in the test. According to the experimental observations and test results, a numerical model capable of simulating the present truss bridge was built and was used to investigate the after-fracture redundancy of the target bridge. Fracture of truss members in typical locations was considered in the numerical analyses, and the ‘R’ values of both intact and damaged trusses were compared. On the basis of the numerical results, a critical member in this bridge was also determined.

    AB - In the next 20 years, more than half of the bridges in Japan would be in service for more than 50 years. These include truss bridges those are generally considered to be non-redundant and fracture critical. With ageing, these bridges are facing an increasing risk of bridge collapse under extreme conditions. Therefore, it is essential to evaluate alternate load paths on existing bridge structures to avoid bridge collapse or replacement. In this paper, after-fracture redundancy of truss bridges is investigated through a case study for a five-span continuous truss bridge. Field tests were performed, and the displacements on key sections were measured in the test. According to the experimental observations and test results, a numerical model capable of simulating the present truss bridge was built and was used to investigate the after-fracture redundancy of the target bridge. Fracture of truss members in typical locations was considered in the numerical analyses, and the ‘R’ values of both intact and damaged trusses were compared. On the basis of the numerical results, a critical member in this bridge was also determined.

    KW - field test, FEM analysis

    KW - member fracture

    KW - Redundancy

    KW - truss bridge

    UR - http://www.scopus.com/inward/record.url?scp=84976331106&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84976331106&partnerID=8YFLogxK

    U2 - 10.1080/15732479.2016.1198393

    DO - 10.1080/15732479.2016.1198393

    M3 - Article

    SP - 1

    EP - 11

    JO - Structure and Infrastructure Engineering

    JF - Structure and Infrastructure Engineering

    SN - 1573-2479

    ER -