| 自由场典型液化特征数值模拟试验 |
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| 引用本文： | 何剑平,陈卫忠. 自由场典型液化特征数值模拟试验[J]. 地震工程与工程振动, 2011, 31(2): 162-169 |
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| 作者姓名： | 何剑平 陈卫忠 |
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| 作者单位： | 1. 山东大学岩土中心,山东,济南,250061;山东大学威海分校,山东,威海,264209
2. 中国科学院武汉岩土力学研究所,湖北,武汉,430071 |
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| 基金项目： | 国家自然科学基金西部重大研究计划项目，国家自然科学基金资助项目，中国科学院西部行动计划高新技术研究项目 |
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| 摘 要： | 应用FLAOD实现自由场液化数值模拟试验.试验结果验证了砂土液化典型特征:超静孔隙水压升高,有效应力降低,体积压缩积累增大.证实了液化的隔振作用:砂土在液化状态变为流体,不能传递剪力,液化时砂土位移、速度、加速度振幅显著降低,剪应力降低,动水向上渗流,土体向下沉降,水平残留不可恢复位移.球压应力、有效压应力、动水压力满...
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| 关 键 词： | 液化 超静孔压比 有效应力 体积应变增量 Biot方程 |
Numerical simulation experiment of typical liquefaction characteristics for free field |
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| HE Jianping,CHEN Weizhong. Numerical simulation experiment of typical liquefaction characteristics for free field[J]. Earthquake Engineering and Engineering Vibration, 2011, 31(2): 162-169 |
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| Authors: | HE Jianping CHEN Weizhong |
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| Affiliation: | HE Jianping1,3,CHEN Weizhong2(1.Geotechnical and Structural Engineering Research Center of Shandong University,Jinan 250061,China,2.Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,3.Shandong University at Weihai,Weihai 264209,China) |
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| Abstract: | The numerical simulation test was completed for the liquefaction in free field with FLAC3D.Experimental results show the typical characteristics of soil liquefaction: excess static pore-water pressure increases,effective stress decreases,and volumetric strain increment increases.The isolation effect of liquefaction is confirmed: the sand changes into fluid in the liquid state,can not transfer shear,the displacement,velocity and acceleration amplitudes of sand in liquefaction reduce significantly,shear stres... |
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| Keywords: | liquefaction excess static pore-water pressure ratio volumetric strain increment effective stress Biot equation |
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