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Earthquakes and Structures Volume 5, Number 5, November 2013 , pages 607-624 DOI: https://doi.org/10.12989/eas.2013.5.5.607 |
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Seismic risk assessment of staggered wall system structures |
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Jinkoo Kim and Donggeol Baek
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| Abstract | ||
| In this study the seismic risk assessments of six- and twelve-story staggered wall system structures with three different structural variations were performed. The performances of staggered wall structures with added columns along the central corridor and the structures with their first story walls replaced by beams and columns were compared with those of the regular staggered wall structures. To this end incremental dynamic analyses were carried out using twenty two pairs of earthquake records to obtain the failure probabilities for various intensity of seismic load. The seismic risk for each damage state was computed based on the fragility analysis results and the probability of occurrence of earthquake ground motions. According to the analysis results, it was observed that the structures with added columns along the central corridor showed lowest probability of failure and seismic risk. The structures with their first story walls replaced by beams and columns showed lowest margin for safety. | ||
| Key Words | ||
| staggered wall; seismic fragility; seismic hazard; seismic risk | ||
| Address | ||
| Jinkoo Kim and Donggeol Baek: Department of Civil and Architectural Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, Suwon, 440-746, Korea | ||