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
DOIs
Publication statusPublished - 2009 Nov

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

  • Architecture
  • Building and Construction

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