中文摘要：

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。

英文摘要：

Based on the statistics of 350 sets of strong-motion acceleration records on bedrock in Next Generation Attenuation（NGA） database of the US and 14 sets of strong-motion acceleration records on bedrock in Wenchuan Mw7.9 earthquake and Lushan Mw6.6 earthquake, normalized horizontal spectral accelerations on bedrock for seismic margin assessments of nuclear power plants were suggested. The effects of earthquake magnitude on frequency contents of strong-motions were adequately taken into account in this suggested spectral acceleration, which could help evaluate the effects of different seismic tectonic environments on normalized spectral acceleration inputs in the seismic margin assessments of different nuclear power plants. In comparison to the normalized spectral accelerations suggested in RG1.60, this suggested spectral acceleration could reflect the high frequency contents of strong-motions induced by medium-strong earthquakes in near field more reliably.