| 粘弹性饱和土中球空腔的动力响应 |
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| 引用本文： | 徐长节,蔡袁强.粘弹性饱和土中球空腔的动力响应[J].土木工程学报,2001,34(4):88-92. |
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| 作者姓名： | 徐长节 蔡袁强 |
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| 作者单位： | 徐长节（浙江大学）
蔡袁强（浙江大学） |
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| 基金项目： | 国家自然科学基金(59908012)及归国留学人员基金资助项目 |
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| 摘 要： | 采用工程上通用的饱和土力学模型,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： | 饱和土 粘弹性 球空腔 动力响应 |
| 文章编号： | 1000-131X(2001)04-0088-05 |
| 修稿时间： | 2000年8月21日 |
DYNAMIC RESPONSE OF SPHERICAL CAVITY IN VISCOELASTIC SATURATED SOILS |
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| Xu Changjie,Cai Yuanqiang.DYNAMIC RESPONSE OF SPHERICAL CAVITY IN VISCOELASTIC SATURATED SOILS[J].China Civil Engineering Journal,2001,34(4):88-92. |
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| Authors: | Xu Changjie Cai Yuanqiang |
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| Abstract: | A dynamic response of the spherical cavity in saturated soils is studied The viscosity of a soil skeleton and the flow-solid interaction are to be considered A modified saturated soil model of Biot is adopted The analytic solution in transformed domain is obtained using the Laplace transformation Moreover,the numerical results are gotten through the inverse Laplace transformation The displacement,stresses and pore water pressure are discussed during the response and compared with that of the elastic case Some useful conclusions are obtained The dynamic displacement of steady state is approached due to the viscosity of the soil skeleton It is more effected on the displacement than the stress |
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| Keywords: | saturated soils viscoelastic spherical cavity dynamic response |
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