| 土体非线性参数变异性与地表响应的概率关系 |
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| 引用本文： | 李波,孙锐,袁晓铭,陈红娟.土体非线性参数变异性与地表响应的概率关系[J].西北地震学报,2011,33(Z1). |
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| 作者姓名： | 李波 孙锐 袁晓铭 陈红娟 |
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| 作者单位： | 中国地震局工程力学研究所,黑龙江哈尔滨,150080 |
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| 基金项目： | 中国地震局工程力学研究所基本科研业务费专项(2009B01); 973计划(2007CB714201) |
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| 摘 要： | 场地土体非线性参数存在明显的变异性,因而与其相关的许多岩土工程问题都会受到其变异性的影响。采用数值模拟的方法研究了场地土非线性参数概率与场地地表加速度反应谱概率之间的关系。结果表明,场地土体动剪切模量比概率水平与场地地表加速度反应谱概率水平的关系随周期频段的变化而变化,粘性土在0.01 s～0.8 s周期内,无粘性土在0.02 s～0.7 s周期内,两者基本呈线性关系;场地土体阻尼比概率水平与地表加速度反应谱概率水平存在良好的对应关系,二者概率水平一致,且与反应谱的频段无关;在0.01 s～6.0 s周期频段内,无粘性土和粘性土的阻尼比概率与地表反应谱概率水平呈明显的线性关系。
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| 关 键 词： | 动剪切模量比 阻尼比 地表加速度反应谱 概率关系 非线性参数 |
The Probability Relationship between Variability of Soil Nonlinear Parameters and Ground Response |
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| LI Bo,SUN Rui,YUAN Xiao-ming,CHEN Hong-juan.The Probability Relationship between Variability of Soil Nonlinear Parameters and Ground Response[J].Northwestern Seismological Journal,2011,33(Z1). |
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| Authors: | LI Bo SUN Rui YUAN Xiao-ming CHEN Hong-juan |
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| Institution: | LI Bo,SUN Rui,YUAN Xiao-ming,CHEN Hong-juan(Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China) |
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| Abstract: | Since soil nonlinear parameters show dramatic variability,many geotechnical problems relating to the soil nonlinear parameters are influenced by their variabilities.The relationship between the probabilities of site soil nonlinear parameters the probabilities of and surface ground acceleration responses is studied by numerical method.Results show that, the relationship between the probability of soil dynamic modulu ratio and the site responses changes in different frequency bands of the response spectra.For... |
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| Keywords: | Soil dynamic modulus ratio Soil damping ratio Surface ground acceleration responses Probability relation Nonlinear parameter |
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