Techno Press


Steel and Composite Structures   Volume 5, Number 5, October 2005, pages 345-358
DOI: http://dx.doi.org/10.12989/scs.2005.5.5.345
 
Energy dissipation demand of compression members in concentrically braced frames
Kangmin Lee and Michel Bruneau

 
Abstract     [Full Text]
    The response of single story buildings and other case studies are investigated to observe trends in response and to develop a better understanding of the impact of some design parameters on the seismic response of CBF. While it is recognized that many parameters have an influence on the behavior of braced frames, the focus of this study is mostly on quantifying energy dissipation in compression and its effectiveness on seismic performance. Based on dynamic analyses of single story braced frame and case studies, it is found that a bracing member designed with bigger R and larger KL/r results in lower normalized cumulative energy, i.e., cumulative compressive energy normalized by the corresponding tensile energy (SEC/ET), in both cases.
 
Key Words
    seismic response; concentrically braced frames; non-linear dynamic analyses; energy dissipation; compression members; slenderness ratios; R factor.
 
Address
Kangmin Lee; Department of Architectural Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, KorearnMichel Bruneau; 212 Ketter Hall, Department of Civil, Structural, and Environmental Engineering, StaternUniversity of New York at Buffalo, Buffalo, NY 14260, USA
 

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