Story drift concentration and hysteresis energy for two story braced frame with buckling braces subjected to strong motion

Yoshihiro Kimura, Yohei Matsuo, Yasunori Nakazawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In our previous researches, it is shown that story drift concentration is restrained by columns in two braced frames with buckling-restrained braces. For the two story braced frames with buckled braces, it is possible for the column to distribute the shear force on each story over height and the story drift concentration may be restrained, if it keeps elastic. In this paper, the equations of the drift concentration factor for two story braced frames with buckled braces have been developed from the equilibrium conditions of the frames subjected to lateral force. This paper clarifies the mechanism of the two story braced frames and the relationship between the drift concentration factor and the ratio of column flexural stiffness. Finally, the drift concentration with seismic response analysis is estimated with the equation for static drift concentration.

Original languageEnglish
Pages (from-to)293-301
Number of pages9
JournalJournal of Structural and Construction Engineering
Volume77
Issue number672
DOIs
Publication statusPublished - 2012 Feb

Keywords

  • Drift concentration factor
  • Flexural buckling of braces
  • Lateral deformation demand
  • Pushover analysis
  • Ratio of column flexural stiffness
  • Seismic response analysis

ASJC Scopus subject areas

  • Architecture
  • Building and Construction

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