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http://dx.doi.org/10.5000/EESK.2020.24.1.001

A Shape of the Response Spectrum for Evaluation of the Ultimate Seismic Capacity of Structures and Equipment including High-frequency Earthquake Characteristics  

Eem, Seung-Hyun (Major in Plant System Engineering, School of Convergence & Fusion System Engineering, Kyungpook National University)
Choi, In-Kil (Mechanical and Structural Safety Research Division, Korea Atomic Energy Research Institute)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.24, no.1, 2020 , pp. 1-8 More about this Journal
Abstract
In 2016, an earthquake occurred at Gyeongju, Korea. At the Wolsong site, the observed peak ground acceleration was lower than the operating basis earthquake (OBE) level of Wolsong nuclear power plant. However, the measured spectral acceleration value exceeded the spectral acceleration of the operating-basis earthquake (OBE) level in some sections of the response spectrum, resulting in a manual shutdown of the nuclear power plant. Analysis of the response spectra shape of the Gyeongju earthquake motion showed that the high-frequency components are stronger than the response spectra shape used in nuclear power plant design. Therefore, the seismic performance evaluation of structures and equipment of nuclear power plants should be made to reflect the characteristics of site-specific earthquakes. In general, the floor response spectrum shape at the installation site or the generalized response spectrum shape is used for the seismic performance evaluation of structures and equipment. In this study, a generalized response spectrum shape is proposed for seismic performance evaluation of structures and equipment for nuclear power plants. The proposed response spectrum shape reflects the characteristics of earthquake motion in Korea through earthquake hazard analysis, and it can be applied to structures and equipment at various locations.
Keywords
Seismic performance evaluation; Ultimate seismic capacity; Response spectrum shape; Nuclear power plant; Seismic verifications; High-frequency earthquake;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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