Seismic displacement control of baseisolated structures using complex stiffness model

Kohju Ikago, Norio Inoue

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    Study on frequency transfer characteristics of a displacement-dependent damper modeled by complex stiffness shows that it has advantage in reduction of base shear and maximum response acceleration of the superstructure of a base-isolated building compared with a conventional velocity-dependent damper such as an oil damper. To realize a displacement-dependent damper, a simple control rule to simulate the complex damping model for active or semi-active dampers is proposed.

    Original languageEnglish
    Pages (from-to)1653-1660
    Number of pages8
    JournalJournal of Structural and Construction Engineering
    Issue number655
    Publication statusPublished - 2010 Sep


    • Complex damping
    • Displacement-dependent damper
    • Hilbert transform
    • Magneto-rheological fluid damper
    • Pseudo-complex-damping control rule

    ASJC Scopus subject areas

    • Architecture
    • Building and Construction


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