| 移动荷载作用下层状饱和土的动力响应 |
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| 引用本文： | 徐斌,陆建飞,王建华,徐满清,黎剑华.移动荷载作用下层状饱和土的动力响应[J].岩土力学,2008,29(12):3186-3192. |
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| 作者姓名： | 徐斌 陆建飞 王建华 徐满清 黎剑华 |
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| 作者单位： | 1. 上海交通大学 土木工程系，上海 200030；2. 江苏大学 土木工程系，江苏 镇江 212013；3. 南昌工程学院 土木工程系，南昌 330029 |
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| 基金项目： | 国家自然科学基金资项目
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| 摘 要： | 根据Biot波动理论，采用传递、反射矩阵（TRM）方法研究了移动荷载作用下层状饱和土动力响应问题。由快速Fourier逆变换法（IFFT）得到层状土地基位移、应力及孔压在时间-空间域内的数值解。计算结果与已有文献结果相吻合，验证了算法的正确性。通过算例分析表明：移动荷载作用下含有软弱夹层的层状土体比均质土具有更显著的动力响应，同时会引起土体孔隙水压升高、土体波动性增强；硬夹层时情况则相反。
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| 关 键 词： | 移动荷载 饱和土 层状地基 TRM矩阵法 Fourier变换 |
| 收稿时间： | 2007-02-06 |
Dynamic response of layered saturated soil under moving loads |
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| XU Bin,LU Jian-fei,WANG Jian-hua,XU Man-qing,LI Jian-hua.Dynamic response of layered saturated soil under moving loads[J].Rock and Soil Mechanics,2008,29(12):3186-3192. |
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| Authors: | XU Bin LU Jian-fei WANG Jian-hua XU Man-qing LI Jian-hua |
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| Institution: | 1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China; 2. Department of Civil Engineering, Jiangsu University, Zhenjiang 212013, China; 3. Department of Civil Engineering, Nanchang Institute of Technology, Nanchang 330029, China |
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| Abstract: | Based on the Biot's theory,dynamic responses of layered saturated soil under moving loads are studied with the transmission and reflection matrices(TRM) methods.Numerical results of the displacements,the pore pressures and the stresses are obtained by performing inverse Fourier transformation in time-space domain.Some numerical examples and corresponding analysis are presented.The presented methodology is validated by comparing solutions with some known results.According to the analysis,it is concluded that... |
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| Keywords: | moving loads saturated soil layered foundation TRM method Fourier transformation |
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