| 成都平原东部地震动小区划研究 |
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| 引用本文： | 曾勇.成都平原东部地震动小区划研究[J].四川地震,1991(4):1-8. |
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| 作者姓名： | 曾勇 |
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| 作者单位： | 四川省地震局 |
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| 摘 要： | 场地的区域工程地质条件决定了场地土结构及土动力学参数的区域性差异,对强震地面运动起着重要的控制作用。为了考虑这种控制作用,以便合理地进行成都平原地震动小区划,本文根据一定数量的地震反应分析结果和所处的区域工程地质条件,建立了地貌单元、土层厚度和土层结构等因素与各类地震反应谱和各档峰值加速度的统计直方图。并引入分量分析方法,对原始因素进行正交变换,用产生互不相关的新因素来代替它们。正交变换之后,根据因子得分矩阵建立模糊关系矩阵 R,根据反映新因素重要程度的因子载荷矩阵生成新因素权重矩阵 A,然后采用模糊综合评判方法,判别成都平原东部各点的地面地震动类型,并由判别结果勾划了本区地震动小区划图。
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| 关 键 词： | 地震 震动 区划 震源 地震波 |
RESEARCH ON MICROZONATION OF STRONG GROUND MOTION IN EASTERN CHENGDU PLAIN |
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| Zeng Yong.RESEARCH ON MICROZONATION OF STRONG GROUND MOTION IN EASTERN CHENGDU PLAIN[J].Earthquake Research in Sichuan,1991(4):1-8. |
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| Authors: | Zeng Yong |
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| Institution: | Seismological Bureau of Sichuan Province |
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| Abstract: | A new quantitative method of microzonation considering of regional engineering geological condi- tions was suggested.First,statistical histograms of response spectra about acceleration under the region- al engineering geological conditions such as geography,thickness and combination of the soil layeres were set up.Then,the independent factors of engineering geological conditions were yielded by compo- nent analysis method and the fuzzy relative matrix was formed.Finally,the fuzzy comprehensive comment method was used to ascertain the types of the strong ground motion and to draw the micro- zonal maps in eastern Chengdu Plain. |
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| Keywords: | eastern Chengdu Plain microzonation of strong ground motion regional engineering geological condition seismic reponse analysis component analysis method fuzzy comprehensive comment method |
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