Evaluation for corrosion state of lower gusset plate connections on steel truss bridge

X. T. Nguyen, K. Nogami, S. Takahashi, M. Kurihara, T. Yoda, H. Kasano, J. Murakoshi, N. Toyama, M. Sawada

    研究成果: Conference contribution

    1 引用 (Scopus)

    抄録

    Many existing steel bridges in Japan were built in high economic growth period and the number of bridges over 50 years will increase drastically in the upcoming years. Due to the heavy traffic and severe natural environment, the deterioration and damage will increase rapidly. Improvement of technologies related to inspection, diagnosis, repair, reinforcement and appropriate maintenance is needed. Concerning the steel truss bridges, the serious corrosion damage has been reported recently, especially on the diagonal members and the gusset plate connections. The fracture of these members of steel truss bridge is likely to lead the collapse of the entire truss bridge. In this study, the detailed corrosion shape of the two lower gusset plate connections that were cut from the steel truss bridge were measured by using the laser measurement equipment, and the actual corrosion state of the outside and the narrow inside surfaces of the lower chord members and the gusset plate connections were evaluated on the basis of the corrosion depth distribution of these surfaces. Based on the detailed results of corrosion measurement, the corrosion states and the corrosion characteristics of reinforced and non- reinforced gusset plate connections were clarified.

    元の言語English
    ホスト出版物のタイトルProceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013
    出版者Hokkaido University collection of Scholarly Academic Papers, HUSCAP
    出版物ステータスPublished - 2013
    イベント13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013 - Sapporo
    継続期間: 2013 9 112013 9 13

    Other

    Other13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013
    Sapporo
    期間13/9/1113/9/13

    Fingerprint

    Steel bridges
    Corrosion
    Deterioration
    Reinforcement
    Repair
    Inspection
    Economics
    Lasers

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction

    これを引用

    Nguyen, X. T., Nogami, K., Takahashi, S., Kurihara, M., Yoda, T., Kasano, H., ... Sawada, M. (2013). Evaluation for corrosion state of lower gusset plate connections on steel truss bridge. : Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013 Hokkaido University collection of Scholarly Academic Papers, HUSCAP.

    Evaluation for corrosion state of lower gusset plate connections on steel truss bridge. / Nguyen, X. T.; Nogami, K.; Takahashi, S.; Kurihara, M.; Yoda, T.; Kasano, H.; Murakoshi, J.; Toyama, N.; Sawada, M.

    Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013. Hokkaido University collection of Scholarly Academic Papers, HUSCAP, 2013.

    研究成果: Conference contribution

    Nguyen, XT, Nogami, K, Takahashi, S, Kurihara, M, Yoda, T, Kasano, H, Murakoshi, J, Toyama, N & Sawada, M 2013, Evaluation for corrosion state of lower gusset plate connections on steel truss bridge. : Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013. Hokkaido University collection of Scholarly Academic Papers, HUSCAP, 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013, Sapporo, 13/9/11.
    Nguyen XT, Nogami K, Takahashi S, Kurihara M, Yoda T, Kasano H その他. Evaluation for corrosion state of lower gusset plate connections on steel truss bridge. : Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013. Hokkaido University collection of Scholarly Academic Papers, HUSCAP. 2013
    Nguyen, X. T. ; Nogami, K. ; Takahashi, S. ; Kurihara, M. ; Yoda, T. ; Kasano, H. ; Murakoshi, J. ; Toyama, N. ; Sawada, M. / Evaluation for corrosion state of lower gusset plate connections on steel truss bridge. Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013. Hokkaido University collection of Scholarly Academic Papers, HUSCAP, 2013.
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    AU - Nogami, K.

    AU - Takahashi, S.

    AU - Kurihara, M.

    AU - Yoda, T.

    AU - Kasano, H.

    AU - Murakoshi, J.

    AU - Toyama, N.

    AU - Sawada, M.

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    AB - Many existing steel bridges in Japan were built in high economic growth period and the number of bridges over 50 years will increase drastically in the upcoming years. Due to the heavy traffic and severe natural environment, the deterioration and damage will increase rapidly. Improvement of technologies related to inspection, diagnosis, repair, reinforcement and appropriate maintenance is needed. Concerning the steel truss bridges, the serious corrosion damage has been reported recently, especially on the diagonal members and the gusset plate connections. The fracture of these members of steel truss bridge is likely to lead the collapse of the entire truss bridge. In this study, the detailed corrosion shape of the two lower gusset plate connections that were cut from the steel truss bridge were measured by using the laser measurement equipment, and the actual corrosion state of the outside and the narrow inside surfaces of the lower chord members and the gusset plate connections were evaluated on the basis of the corrosion depth distribution of these surfaces. Based on the detailed results of corrosion measurement, the corrosion states and the corrosion characteristics of reinforced and non- reinforced gusset plate connections were clarified.

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    KW - Steel truss bridge

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