地震动参数与地震烈度的多元回归研究

英文篇名：Study on model of multiple regression between strong ground motion parameters and seismic intensity
中文刊名：地震工程与工程振动
英文刊名：Journal of Earthquake Engineering and Engineering Vibration
作者：林淋 ; 孙景江 ; 廖洁 ; 许卫晓
英文作者：LIN Lin ; SUN Jingjiang ; LIAO Jie ; XU Weixiao(Institute of Engineering Mechanics ; China Earthquake Administration ; Harbin 150080 ; China)
中文关键词：烈度 ; 多元回归模型 ; 地震烈度 ; 汶川地震
英文关键词：intensity ; model of multiple regression ; spectrum intensity ; Wenchuan earthquake
出版日期：2011-06-15
机构：中国地震局工程力学研究所;
年：2011
期：03
出版单位：地震工程与工程振动

摘要

建立合理的地震烈度与地震动参数之间的对应关系,在工程抗震及烈度速报中有着十分重要的作用,文中以美国加州3次破坏性地震和我国今年来6次地震中所获得的强震记录作为数据源,应用最小二乘法进行线性回归,得到了不同地震动参数与烈度间的相关性。经统计发现,在地面加速度峰值、标准累计绝对速度等12种描述地震动强度的参数中,各种参数在不同烈度区的烈度识别正确率有着不同的分布,因此采用多元回归的办法,建立了地震烈度与地震动参数、震级的多元回归分析模型,有效地提高了烈度的正确识别率且改善了烈度识别误差的分布情况。
The correlation between several strong ground motion parameters and seismic intensity was presented by the analysis of acceleration records obtained in three destructive earthquakes in California and six earthquakes in China using the least squares method.The results indicated that among the sixteen strong ground motion parameters analyzed in this article,the recognition rates of twelve ground parameters in different seismic intensityies are absolutely different,so the model of multiple element regression between ground motion parameters and seismic intensity is suggested to improve the recognition rates.The results show that this method may effectively improve the recognition rates.

引文

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