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http://dx.doi.org/10.5762/KAIS.2019.20.3.276

Seismic Fragility Evaluation of Chimney Structure in Power Plant by Finite Element Analysis  

Kwon, Gyu-Bin (Department of Civil Engineering, Gyeongsang National University)
Kim, Jin-Sup (Department of Civil Engineering, ERI, Gyeongsang National University)
Kwon, Min-Ho (Department of Civil Engineering, ERI, Gyeongsang National University)
Park, Kwan-Soo (Department of Power Planing & Construction, Korea South-East Power Company)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.3, 2019 , pp. 276-284 More about this Journal
Abstract
Seismic research on bridges, dams and nuclear power plants, which are infrastructure in Korea, has been carried out since early on, but in the case of structures in thermal power plants, research is insufficient. In this study, a total of 192 dynamic analyzes were performed for 16 actual seismic waves and 12 PGAs. As a result, the probability of failure increased as the PGA value increased for each applied seismic wave, but it was different for each seismic wave. As a result, at 0.22G, the ratio of the compressive limit reached to the limit state was 25% and the ratio of the relative displacement reached the limit state was 13%. So, the probability of collapse due to compressive failure Is higher. Therefore, the fragility curve of the chimney which is the subject of this study can be used as a quantitative basis to determine the limit state of the target structure when an earthquake occurs and to be used for the safety design of the thermal power plants.
Keywords
Chimney; Fragility Curve; PGA; Seismic Waves; Thermal Power Plants;
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Times Cited By KSCI : 2  (Citation Analysis)
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