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首页> 外文期刊>Nuclear engineering and technology >Design response spectra-compliant real and synthetic GMS for seismic analysis of seismically isolated nuclear reactor containment building
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Design response spectra-compliant real and synthetic GMS for seismic analysis of seismically isolated nuclear reactor containment building

机译：符合设计响应谱的真实和合成GMS，用于地震隔离核反应堆安全壳建筑的地震分析

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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.
机译：由于最近地震的严重影响，使用地震隔离对核结构的安全至关重要。在地震事件中观察到的多样性要求进行持续的研究以分析所涉及的破坏性属性，从而增强基础隔离核电厂的可持续性。这项研究报告了地震隔离的核反应堆安全壳建筑物（NRCB）在强烈的短周期地震动（SPGMs）和长周期地震动（LPGMs）下的抗震性能。规定将基于美国核管理委员会用于核电厂抗震设计的设计响应谱作为地面运动选择的参考谱。在感兴趣的时间范围内，使用光谱兼容性方法可确保所选记录与目标光谱的光谱匹配。来自东北大地震的符合NRC的SPGM和LPGM用于获得基础隔离NRCB的结构响应。为了解决中低地震活动区地震的缺乏和长期记录的人工合成中的空白，进行了基于小波分解的自回归移动平均模型，用于人工生成真实的地面运动。基于实际和模拟SPGM与LPGM的分析结果，讨论了NRCB的性能，并提出了对未来研究和地震规定的建议。

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