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Title |
Seismic Fragility Analysis of Anchorage Failure in Nuclear Power Plant Structure
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Authors |
이유상(Yousang Lee) ; 김주형(Ju-Hyung Kim) ; 박홍근(Hong-Gun Park) |
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DOI |
https://doi.org/10.4334/JKCI.2022.34.3.321 |
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Keywords |
지진 취약도; 확률론적 응답 해석; 앵커; 원자력 발전소 seismic fragility; probabilistic response analysis; anchorage; nuclear power plant |
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Abstract |
Floor response spectrum (FRS) is commonly used for the evaluation of equipment installed in nuclear power plant. In conventional practice, FRS representing the entire floor responses are simplified using a lumped-mass stick model (LMSM). However, actual responses at different locations may show significant variation, which may have a substantial influence on the seismic fragility of the equipment. In the present study, FRS at different slab locations were calculated using a 3-D finite element model, and the results were compared. The results showed that significant variance exists even in a floor. Based on the result, seismic fragility analysis of anchorage failure was performed to show variance of High Confidence of Low Probability of Failure (HCLPF), considering the location-dependent variability of FRS.
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