Seismic behavior factors of buckling-restrained braced frames

Jinkoo Kim, Junhee Park, Sang Dae Kim

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

The seismic behavior of a framed structure with chevron-type buckling restrained braces was investigated and their behavior factors, such as overstrength, ductility, and response modification factors, were evaluated. Two types of structures, building frame systems and dual systems, with 4, 8, 12, and 16 stories were designed per the IBC 2003, the AISC LRFD and the AISC Seismic Provisions. Nonlinear static pushover analyses using two different loading patterns and incremental dynamic analysis using 20 earthquake records were carried out to compute behavior factors. Time history analyses were also conducted with another 20 earthquakes to obtain dynamic responses. According to the analysis results, the response modification factors turned out to be larger than what is proposed in the provision in low-rise structures, and a little smaller than the code-values in the medium-rise structures. The dual systems, even though designed with smaller seismic load, showed superior static and dynamic performances.

Original languageEnglish
Pages (from-to)261-284
Number of pages24
JournalStructural Engineering and Mechanics
Volume33
Issue number3
DOIs
Publication statusPublished - 2009

Keywords

  • Behavior factors
  • Buckling restrained braces
  • Building systems
  • Response modification factors
  • Seismic design

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Mechanical Engineering

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