第二代C-B NGA衰减关系的随机误差和不确定性校正
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摘要
用Campbell和Bozorgnia建立的第二代C-B NGA地震动衰减关系模型计算出PGA预测值,分析了在不同PGA范围内的预测值和观测值随机误差的均值μ和随机误差的标准差σ,找出了PGA衰减关系误差分布特点。用新的分段不确定性校正方法,以三个不同地震危险场地为例分析了该方法与传统方法在危险性分析中的差异。
Second generation C-B NGA ground motion attenuation relationship of Campbell and Bozorgnia was used to count PGA predicted value,the mean value μ and random error σ of predicted and observed values were analyzed in different scales of PGA. The error distribution characteristics of PGA attenuation relationship were found. A new segmented uncertainty correction method was used to analyze the difference between this method and the classic method in three different earthquake risk site example analysis.
引文
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