Fundamental study on motion and deformation of building structures with soft stories from the viewpoint of wave propagation

Daiki Nakamizo, Akira Nishitani

    Research output: Contribution to journalArticle

    Abstract

    This paper discusses the motion characteristics of building structures with soft stories integrated, from the wave propagation point of view. Even in dealing with a normal lumped mass system, if considering the energy transfer from a lumped mass to its next lumped mass, a very clear view can be given to the understanding of the mechanism for the vibration phenomena for these structures. In particular, the paper focuses on why a significantly large deformation occurs at the soft story in these structures. In addition, the relationship between the peak seismic deformation and energy flows in the structures subjected to large-period seismic excitation is quantitatively discussed from the standpoint of energy transfer induced by the wave propagation through the structures.

    Original languageEnglish
    Pages (from-to)1967-1974
    Number of pages8
    JournalJournal of Structural and Construction Engineering
    Volume74
    Issue number645
    Publication statusPublished - 2009 Nov

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    Energy transfer
    Wave propagation

    Keywords

    • Critical excitation
    • Energy how
    • Local equivalent damping ratio
    • Momentary input energy
    • Power how
    • Reflection and penetration ratio
    • Soft story
    • Wave propagation

    ASJC Scopus subject areas

    • Building and Construction
    • Architecture

    Cite this

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    KW - Reflection and penetration ratio

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