| 粘弹性准饱和土中球空腔的动力响应 |
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| 引用本文： | 徐长节,马晓华. 粘弹性准饱和土中球空腔的动力响应[J]. 岩土力学, 2005, 26(8): 1189-1194 |
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| 作者姓名： | 徐长节 马晓华 |
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| 作者单位： | 浙江大学 岩土工程研究所，杭州 310027 |
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| 摘 要： | 从工程实际出发，采用粘弹性两相介质模型，考虑土骨架的粘性以及流体与固体之间的耦合作用，利用Laplace变换求解了粘弹性准饱和土中球空腔的动力响应问题，得到了变换域内的解析解。借助数值Laplace反变换，数值分析了粘弹性准饱和土中球空腔动力响应的位移、应力及孔压的变化规律。为分析地下结构动力响应提供了一种有效的方法，模型符合工程实际，有一定的工程应用价值。
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| 关 键 词： | 粘弹性 准饱和土 球空腔 动力响应 |
| 文章编号： | 1000-7598-(2005)08-1189-06 |
| 收稿时间： | 2004-03-03 |
| 修稿时间： | 2004-03-03 |
Dynamic response of spherical cavity in nearly saturated viscoelastic soils |
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| XU Chang-jie,MA Xiao-hua. Dynamic response of spherical cavity in nearly saturated viscoelastic soils[J]. Rock and Soil Mechanics, 2005, 26(8): 1189-1194 |
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| Authors: | XU Chang-jie MA Xiao-hua |
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| Affiliation: | Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | Considering engineering practice, the viscoelastic two-phase model of soils is adopted to analyze the transient dynamic response of the spherical cavity in nearly saturated viscoelastic soils. The analytic solution in transformed domain is got by the method of Laplace transformation; and numerical results are presented through inverse Laplace transformation. The displacement, stresses and pore water pressure are investigated during the response and compared with the elastic case; and some features of the problem are revealed. The study is reasonable for engineering practice and provides an effective method for analysing the similar problem about dynamic response of underground structure. |
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| Keywords: | nearly saturated soils viscoelasticity spherical cavity dynamic response |
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