| 上海软土动力参数变异性对土层地震反应的影响 |
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| 引用本文： | 楼梦麟,严国香,沈建文,文峰. 上海软土动力参数变异性对土层地震反应的影响[J]. 岩土力学, 2004, 25(9): 1368-1372 |
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| 作者姓名： | 楼梦麟 严国香 沈建文 文峰 |
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| 作者单位： | 1. 同济大学,土木工程防灾国家重点实验室,上海,200092
2. 上海市地震局,上海,200062 |
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| 基金项目： | 上海市科学技术发展基金(编号:022512065)，上海市建设技术发展基金(编号:A0206101)联合资助项目 |
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| 摘 要： | 应用模态摄动法求解水平分层均匀土层的地震反应，通过大量的数值计算，讨论上海软土土性变化对土层基本周期和表面地震加速度反应的影响。数值结果表明：准确获取土层的动力参数对土层地震反应计算有重要影响，在现场实测获得较为翔实的土样动力特性参数的基础上，土层土性动力参数变异性所产生的计算误差是有限的。
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| 关 键 词： | 分层土层 地震反应 土性动力参数 变异性 |
| 文章编号： | 1000-7598-(2004)09-1368-05 |
| 修稿时间： | 2003-06-23 |
Effect of variability of dynamic parameters of soft soil in Shanghai region on seismic response of layered soil |
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| LOU Meng-lin,YAN Guo-xiang,SHEN Jian-wen,WEN Feng. Effect of variability of dynamic parameters of soft soil in Shanghai region on seismic response of layered soil[J]. Rock and Soil Mechanics, 2004, 25(9): 1368-1372 |
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| Authors: | LOU Meng-lin YAN Guo-xiang SHEN Jian-wen WEN Feng |
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| Affiliation: | LOU Meng-lin1,YAN Guo-xiang1,SHEN Jian-wen2,WEN Feng1 |
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| Abstract: | The seismic response of a layered soil in Shanghai region is analyzed by modal perturbation method. The effect of dynamic property variation of soil on the fundamental period of layered soil and the peak acceleration of seismic response at soil surface has been discussed by the determinate technique instead of random analysis. It is shown by using numerical results obtained from many case studies that acquiring accurately the dynamic property of soil medium from the soil site field is important for the seismic response analysis of layered soil and that the effect of variability of dynamic soil properties, which are measured accurately from the soil site field, on the calculation errors of seismic responses and fundamental period of the soil layer is limited. |
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| Keywords: | layered soil seismic response dynamic property of soil medium variability |
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