Performance of strengthened hybrid structures renovated from old railway steel bridges

Weiwei Lin, Teruhiko Yoda*, Nozomu Taniguchi, Masanori Hansaka

*この研究の対応する著者

    研究成果: Article査読

    28 被引用数 (Scopus)

    抄録

    Structural repair or maintenance technique has been a hot issue in recent years due to the increasing aging problems of old railway bridges, which have been used beyond or approaching their design service life. A strengthening method for old steel railway bridges by integrating the new structural members was adopted in engineering practice in this context. Rubber-latex mortar, GFRP plates and rapid hardening concrete were integrated with the old steel railway bridge to increase its rigidity and reduce both stress levels and structure-borne sound levels of the old steel bridge. The purpose of the present study is to investigate the mechanical performance of the renovated hybrid railway bridge. The material test on aged structural steel, the static loading test on the strengthened bridge, and the impact hammer test on the old bridge before and after strengthening, were performed to confirm the effects of present strengthening method. Moreover, three-dimensional FE models were built to make a comparison study between the strengthened and the original steel bridge. Both experimental and numerical results indicate that the renovation method can greatly enhance the stiffness and reduce the stress levels of steel members, resulting in the extension of the service life of the old steel railway bridge. Furthermore, noise reduction effects by using concrete and rubber-latex mortar were confirmed in the impact test.

    本文言語English
    ページ(範囲)130-139
    ページ数10
    ジャーナルJournal of Constructional Steel Research
    85
    DOI
    出版ステータスPublished - 2013

    ASJC Scopus subject areas

    • 建築および建設
    • 土木構造工学
    • 材料力学
    • 金属および合金

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