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http://dx.doi.org/10.5000/EESK.2013.17.2.053

Seismic Fragility Evaluation of Isolated NPP Containment Structure Considering Soil-Structure Interaction Effect  

Eem, Seung Hyun (Department of Civil and Environmental Engineering, KAIST)
Jung, Hyung Jo (Department of Civil and Environmental Engineering, KAIST)
Kim, Min Kyu (Integrated Safety Assessment Division, KAERI)
Choi, In Kil (Integrated Safety Assessment Division, KAERI)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.17, no.2, 2013 , pp. 53-59 More about this Journal
Abstract
Several researches have been studied to enhance the seismic performance of nuclear power plants (NPPs) by application of seismic isolation. If a seismic base isolation system is applied to NPPs, seismic performance of nuclear power plants should be reevaluated considering the soil-structure interaction effect. The seismic fragility analysis method has been used as a quantitative seismic safety evaluation method for the NPP structures and equipment. In this study, the seismic performance of an isolated NPP is evaluated by seismic fragility curves considering the soil-structure interaction effect. The designed seismic isolation is introduced to a containment building of Shin-Kori NPP which is KSNP (Korean Standard Nuclear Power Plant), to improve its seismic performance. The seismic analysis is performed considering the soil-structure interaction effect by using the linearized model of seismic isolation with SASSI (System for Analysis of Soil-Structure Interaction) program. Finally, the seismic fragility is evaluated based on soil-isolation-structure interaction analysis results.
Keywords
Soil-Structure Interaction; Seismic Isolation System; Seismic Performance; Seismic Fragility; Nuclear Power Plants;
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