Effect of damping force restriction and buffer spring of viscous mass damper in base-isolated buildings

Shigeki Nakaminami, Hidenori Kida, Kohju Ikago, Norio Inoue

    Research output: Contribution to journalArticlepeer-review

    Abstract

    In this paper, we propose installing a buffer spring into a base-isolated system incorporated with a viscous mass damper as a method to reduce excessive acceleration induced by the secondary mass. We derived transfer functions of a two-degree-of freedom model on the basis of equivalent linearization method using complex stiffness model and the effectiveness of this system was examined by non-linear time history response analysis for real buildings. These results confirmed that the buffer spring as well as the damper force restriction is effective in reduction of accelerations and damper forces without deterioration in displacement reduction effect brought by the secondary mass.

    Original languageEnglish
    Pages (from-to)1055-1064
    Number of pages10
    JournalJournal of Structural and Construction Engineering
    Volume79
    Issue number701
    DOIs
    Publication statusPublished - 2014 Jul 1

    Keywords

    • Base-isolated buildings
    • Buffer spring
    • Damper force restrictionmechanism
    • Rotary inertial mass
    • Two-degree-of freedom model
    • Viscous mass damper

    ASJC Scopus subject areas

    • Architecture
    • Building and Construction

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