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本文在证明场址的地震影响烈度的频次与相应的烈度值呈对数线性关系的基础上,利用最大似然法,以山西南部(N35.5°~38°,λE111~113°)为例,求出各场址的β、λ和Imax,得出各场址的烈度危险性分析曲线,并用“逻辑树”方法对各场址的危险性结果进行不确定校正,由此得到该区域的烈度区划图。结果表明这种方法是可行的,尤对呈现过烈度异常的区域,本方法的结果更能显示其特殊性。
Based on the logarithmically linear relationship between the frequency of earthquake-affected intensity and the corresponding intensity, the maximum likelihood method is applied to the case of southern Shanxi (N35.5 ° ~ 38 °, λE111 ~ 113 °) , Calculate the β, λ and Imax of each site, get the intensity analysis curve of each site, and use “logical tree” method to carry on the indefinite correction of the dangerous result of each site, and get the Intensity zoning map. The results show that this method is feasible, especially for those regions that show the intensity anomaly, the result of this method can show its particularity.