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http://dx.doi.org/10.1016/j.net.2017.02.006

Design response spectra-compliant real and synthetic GMS for seismic analysis of seismically isolated nuclear reactor containment building  

Ali, Ahmer (ENVICO Consultants Co. Ltd.)
Abu-Hayah, Nadin (Civil and Environmental Engineering, Kunsan National University)
Kim, Dookie (Civil and Environmental Engineering, Kunsan National University)
Cho, Sung Gook (Innose Tech Co., Ltd.)
Publication Information
Nuclear Engineering and Technology / v.49, no.4, 2017 , pp. 825-837 More about this Journal
Abstract
Due to the severe impacts of recent earthquakes, the use of seismic isolation is paramount for the safety of nuclear structures. The diversity observed in seismic events demands ongoing research to analyze the devastating attributes involved, and hence to enhance the sustainability of base-isolated nuclear power plants. This study reports the seismic performance of a seismically-isolated nuclear reactor containment building (NRCB) under strong short-period ground motions (SPGMs) and long-period ground motions (LPGMs). The United States Nuclear Regulatory Commission-based design response spectrum for the seismic design of nuclear power plants is stipulated as the reference spectrum for ground motion selection. Within the period range(s) of interest, the spectral matching of selected records with the target spectrum is ensured using the spectral-compatibility approach. NRC-compliant SPGMs and LPGMs from the mega-thrust Tohoku earthquake are used to obtain the structural response of the base-isolated NRCB. To account for the lack of earthquakes in low-to-moderate seismicity zones and the gap in the artificial synthesis of long-period records, wavelet-decomposition based autoregressive moving average modeling for artificial generation of real ground motions is performed. Based on analysis results from real and simulated SPGMs versus LPGMs, the performance of NRCBs is discussed with suggestions for future research and seismic provisions.
Keywords
ARMA Modeling; Base Isolation; Generation; Long-Period Motions; Nuclear Power Plants; Seismic Response; Tohoku; Record Selection;
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