Progressive Collapse and Seismic Performance of Twisted Diagrid Buildings

Authors

  • Kwangho Kwon Hyundai Architects & Engineers Associates Co., Ltd, Seoul, Korea Author
  • Jinkoo Kim Dept. of Civil and Architectural Engineering, Sungkyunkwan University, Suwon, Korea Author

Keywords:

Progressive collapse, Seismic performance, Irregular structures, Diagrid structures

Abstract

In this study the progressive collapse resisting capacities of tall diagrid buildings were evaluated based on arbitrary column removal scenario, and the seismic load-resisting capacities were investigated through fragility analysis and ATC 63 procedure. As analysis model structures both regular and twisted diagrid structures were designed and their load-resisting capacities were compared by nonlinear static and dynamic analyses. The analysis results showed that the progressive collapse potential of twisted buildings decreased as the twisting angle increased, but the seismic fragility or the probability of failure decreased as the twisting angle increased.

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Published

2014-09-30

Issue

Vol. 3 No. 3 (2014)

Section

Articles