| 二相介质饱和土中群桩动力阻抗分析 |
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| 引用本文： | 张玉红,黄义.二相介质饱和土中群桩动力阻抗分析[J].地震工程与工程振动,2001,21(3):113-116. |
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| 作者姓名： | 张玉红 黄义 |
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| 作者单位： | 1. 佛山大学土建系
2. 西安建筑科技大学 |
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| 基金项目： | 国家自然科学基金资助项目（59678003） |
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| 摘 要： | 用流体饱和多孔介质材料描述土体，由饱和土和群桩及承台系统的位移协调条件和力平衡条件建立饱和土和群桩及承台系统动力相互作用的控制方程，分析饱和土中群桩动力阻抗。结果表明：孔隙流体对饱和土中桩基础动力阻抗有一定的影响；在饱和土具有不同的流体渗透系数时，饱和土中群桩动力阻抗也有一定差别。在地基上与基础结构动力相互作用研究中应该考虑地基土中孔隙流体的影响。
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| 关 键 词： | 饱和土 群桩 相互作用 动力阻抗 孔隙流体 地基上 基础结构 |
| 文章编号： | 1000-1301(2001)03-0113-04 |
Dynamic impedance of group piles in two-phase fluid-saturated soils |
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| ZHANG Yu-hong HUANG Yi.Dynamic impedance of group piles in two-phase fluid-saturated soils[J].Earthquake Engineering and Engineering Vibration,2001,21(3):113-116. |
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| Authors: | ZHANG Yu-hong HUANG Yi |
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| Abstract: | The dynamic impedance of group piles in fluid-saturated porous media is analyzed. A set of governing equations is presented on the basis of coordinate and balance conditions between saturated soils and group piles and footing.The results indicate that pore fluid may affect impedance functions of group piles in two-phase saturated soils and different permeability coeffcients of fluid-saturated soils may have different effects on dynamic impedance of group piles in two-sphase fluid-saturated soils and the effect of the permeability coefficient on horizontal impedance is more sensitive than that on vertical impedance of group piles. So it is necessary to consider the effect of pore fluid of saturated soils for soils and foundation interaction. |
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| Keywords: | saturated soils group piles interaction dynamic impedance |
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