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Progressive Collapse Resisting Capacity of Braced Frames  

Kim, Jin-Koo (성균관대학교 건축공학과)
Lee, Young-Ho (성균관대학교 건축공학과)
Choi, Hyun-Hoon (성균관대학교 건축공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.21, no.5, 2008 , pp. 429-437 More about this Journal
Abstract
In this study the progressive collapse potential of braced frames were investigated using the nonlinear static and dynamic analyses. All of nine different brace types were considered along with a special moment-resisting frame for comparison. According to the pushdown analysis results, most braced frames designed per current design codes satisfied the design guidelines for progressive collapse initiated by loss of a first story mid-column; however most model structures showed brittle failure mode. This was caused by buckling of columns after compressive braces buckled. Among the braced frames considered, the inverted- V type braced frames showed superior ductile behavior during progressive collapse. The nonlinear dynamic analysis results showed that all the braced frame model structures remained in stable condition after sudden removal of a column, and their deflections were less than that of the moment-resisting frame.
Keywords
progressive collapse; special concentrically braced frame; nonlinear analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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