A new seismic retrofitting method for steel bridge piers in Japan

Weiwei Lin*, Nozomu Taniguchi, Shinya Satake, Fujikazu Okubo, Takeaki Kubo

*Corresponding author for this work

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


    Japanese highway bridge design codes have been modified a lot since the Hyogoken-Nanbu Earthquake in 1995, but only used for designing new bridges. The aged steel piers constructed with old design code should be strengthened appropriately to adopt with current design code. With the purpose of improving the seismic performance of existing steel piers, a preventive seismic retrofit method by using GFRP plate, rapid hardening concrete, rubber-latex mortar, and reinforcement is proposed in this paper. The static loading tests on the steel piers before and after strengthening were performed to confirm the effects of the present strengthening method. Moreover, three-dimensional FE models were built to make a comparison study between the strengthened and the original steel piers. Load versus deflection relationship and sectional strain distribution on the piers were measured and compared between original piers and strengthened piers. Both experimental and numerical results indicate that the present strengthening method can greatly enhance the stiffness and reduce the stress levels of steel pier, resulting in the extension service life and improvement of the seismic performance of aged steel piers.

    Original languageEnglish
    Title of host publicationIABSE Conference, Vancouver 2017
    Subtitle of host publicationEngineering the Future - Report
    PublisherInternational Association for Bridge and Structural Engineering (IABSE)
    Number of pages8
    ISBN (Electronic)9783857481536
    Publication statusPublished - 2017 Jan 1
    Event39th IABSE Symposium in Vancouver 2017: Engineering the Future - Vancouver, Canada
    Duration: 2017 Sept 212017 Sept 23


    Other39th IABSE Symposium in Vancouver 2017: Engineering the Future


    • Loading test
    • Numerical analysis
    • Seismic retrofit
    • Steel piers

    ASJC Scopus subject areas

    • Building and Construction
    • Civil and Structural Engineering


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