| 黄河三角洲饱和地基土地震响应数值分析 |
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| 引用本文： | 刘红军,程 超,陈友媛,王秀海.黄河三角洲饱和地基土地震响应数值分析[J].岩土力学,2006,27(Z1):977-982. |
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| 作者姓名： | 刘红军 程 超 陈友媛 王秀海 |
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| 作者单位： | 1. 中国海洋大学 海洋环境与生态教育部重点实验室，青岛 266003；2. 中国海洋大学 环境科学与工程学院岩土环境工程系，青岛 266003 |
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| 基金项目： | 国家自然科学基金资助项目（No. 40472137）。 |
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| 摘 要： | 根据黄河三角地区特殊土层的力学性质，以天津波水平向加速度时程曲线为输入地震波，在3 %，10 %和63 %三种超越概率情况下，对黄河三角洲20 m深度土层的地震反应进行数值分析，研究了孔压和动剪应力的变化。与室内动三轴试验得到的破坏孔压和动剪应力进行比较，判断土层的液化破坏情况。研究结果表明，在3 %超越概率下大部分地层均液化，在10 %超越概率下少部分地层被破坏，在63 %超越概率下大部分地层均不液化。采用破坏动剪应力比和破坏孔压比的判别结果相吻合。
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| 关 键 词： | 黄河三角洲 地震响应 数值分析 饱和地基土 |
| 收稿时间： | 2005-01-03 |
Numerical analysis of seismic response of saturated foundation soil
in Yellow River Delta |
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| LIU Hong-jun,CHENG Chao,CHEN You-yuan,WANG Xiu-hai.Numerical analysis of seismic response of saturated foundation soil
in Yellow River Delta[J].Rock and Soil Mechanics,2006,27(Z1):977-982. |
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| Authors: | LIU Hong-jun CHENG Chao CHEN You-yuan WANG Xiu-hai |
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| Institution: | 1. Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao 266003, China;
2. Geoenvironmental Engineering Department, College of Environmental Science and Engineering, Ocean University of China, Qingdao 266003, China |
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| Abstract: | Based on mechanical properties of the special soil layers in Yellow River Delta, with the horizontal acceleration time path of Tianjin seismic wave taken as the input seismic wave, numerical analysis is carried out on seismic response of the soil layers in the depth range of 20 m in Yellow River Delta. Three transcendental probabilities, i.e. 3 percent, 10 percent and 63 percent, are considered to study changes of pore water pressure and dynamic shear stress, which are compared with those obtained in laboratory dynamic triaxial tests to evaluate liquefaction potential of the soil layers. Research results show that under the transcendental probability of 3 percent, most of the soil layers will fail; under 10 percent, only a few will; and under 63 percent, most will not. Evaluation results obtained with failure dynamic shear stress ratio coincide with those obtained with pore water pressure ratio. |
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| Keywords: | Yellow River Delta seismic response numerical analysis saturated foundation soil |
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