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基于美国新一代地震动衰减关系(NGA)数据库中350条基岩强震动加速度记录数据,以及我国汶川M_W7.9地震和芦山M_W6.6地震中获取的14条基岩强震动加速度记录,获得可用于核电厂地震裕量分析的基岩水平向加速度反应谱谱型。获得的反应谱充分考虑了地震规模(震级)对地震动反应谱频率成分的显著影响,在核电厂地震裕量分析中可以考虑厂址所处地震构造环境对输入地震动反应谱谱型的影响。相对于RG1.60谱,给出的反应谱能够更加可靠地反映近场中强地震产生的地震动高频成分。
Based on strong ground motion acceleration records of 350 bedrock in the NGA database of the United States and 14 strong bedrock acceleration records obtained from the Wenchuan M_W7.9 and Lushan M_W6.6 earthquakes in the United States, Bedrock horizontal acceleration response spectral type for seismic margin analysis of nuclear power plant. The obtained response spectrum fully takes into account the significant influence of the earthquake magnitude (magnitude) on the frequency components of the ground motion response spectrum. The impact of the seismic tectonic environment at the site on the spectral response of the input ground motion can be considered in the analysis of the seismic margin of the nuclear power plant. Compared with the RG1.60 spectrum, the response spectrum given can more reliably reflect the high frequency components of ground motions produced by strong earthquakes in the near field.