Corrosion evaluation of gusset plate connection removed from steel truss bridge

Xuan Tung Nguyen, Kuniei Nogami, Teruhiko Yoda, Hideyuki Kasano, Jun Murakoshi, Hiroaki Honda, Daiki Tashiro

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    Many steel bridges currently in use in Japan were built during the country's period of high economic growth. As a result, the number of bridges over 50 years old will increase drastically in the upcoming years. Due to heavy traffic and Japan's severe natural environment, deterioration and damage will increase rapidly. Concerning steel truss bridges, in particular, serious corrosion damage has been reported recently, especially on the diagonal members and the gusset plate connections. This study concerns the evaluation of a corrosion measurement method using laser equipment, which was used to determine the detailed corrosion state of connection P25u that was cut out from a five-span steel truss bridge. The actual corrosion state of the outer and inner surfaces of the gusset plates and the flange surfaces of diagonal members was investigated on the basis of the corrosion depth distribution. Based on the detailed results of corrosion measurement, the corrosion state and the corrosion characteristics of the connection were clarified.

    Original languageEnglish
    Title of host publicationIABSE Conference, Nara 2015: Elegance in Structures - Report
    PublisherInternational Association for Bridge and Structural Engineering (IABSE)
    Number of pages2
    ISBN (Electronic)9783857481383
    Publication statusPublished - 2015
    EventIABSE Conference, Nara 2015: Elegance in Structures - Nara, Japan
    Duration: 2015 May 132015 May 15


    OtherIABSE Conference, Nara 2015: Elegance in Structures


    • Corrosion
    • Gusset plate
    • Laser measurement
    • Steel truss bridge

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction


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