A new seismic retrofitting method for steel bridge piers in Japan

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


    研究成果: Conference 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.

    ホスト出版物のタイトルIABSE Conference, Vancouver 2017
    ホスト出版物のサブタイトルEngineering the Future - Report
    出版社International Association for Bridge and Structural Engineering (IABSE)
    出版ステータスPublished - 2017 1月 1
    イベント39th IABSE Symposium in Vancouver 2017: Engineering the Future - Vancouver, Canada
    継続期間: 2017 9月 212017 9月 23


    Other39th IABSE Symposium in Vancouver 2017: Engineering the Future

    ASJC Scopus subject areas

    • 建築および建設
    • 土木構造工学


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