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黏弹性准饱和土中球空腔动力特性

高华喜 闻敏杰

高华喜, 闻敏杰. 黏弹性准饱和土中球空腔动力特性[J]. 力学学报, 2012, (4): 753-761. doi: 10.6052/0459-1879-11-303
引用本文: 高华喜, 闻敏杰. 黏弹性准饱和土中球空腔动力特性[J]. 力学学报, 2012, (4): 753-761. doi: 10.6052/0459-1879-11-303
Gao Huaxi, Wen Minjie. DYNAMIC CHARACTERISTICS OF A SPHERICAL CAVITY IN NEARLY SATURATED VISCOELASTIC SOIL[J]. Chinese Journal of Theoretical and Applied Mechanics, 2012, (4): 753-761. doi: 10.6052/0459-1879-11-303
Citation: Gao Huaxi, Wen Minjie. DYNAMIC CHARACTERISTICS OF A SPHERICAL CAVITY IN NEARLY SATURATED VISCOELASTIC SOIL[J]. Chinese Journal of Theoretical and Applied Mechanics, 2012, (4): 753-761. doi: 10.6052/0459-1879-11-303

黏弹性准饱和土中球空腔动力特性

doi: 10.6052/0459-1879-11-303
基金项目: 国家自然科学基金项目(41002112);浙江省教育厅重点科研项目(Z201119560)和浙江省自然科学基金项目(Y12E090013)资助.
详细信息
  • 中图分类号: T435

DYNAMIC CHARACTERISTICS OF A SPHERICAL CAVITY IN NEARLY SATURATED VISCOELASTIC SOIL

Funds: The project was supported by the National Natural Science Foundation of China (41002112); Zhejiang Provincial Education Department Foundation (Z201119560) and Zhejiang Provincial Natural Science Foundation (Y12E090013).
  • 摘要: 在频率域内研究了内水压力作用下分数导数型黏弹性准饱和土中球空腔的稳态动力响应. 通 过引入与孔隙率有关的应力系数合理地确定了介质和孔隙水共同承担的内水压力值. 将土骨 架和衬砌分别视为具有分数导数本构模型的黏弹性体和多孔柔性材料, 基于Biot两相介质模 型, 通过引入位移势函数解耦得到了内水压力作用下分数导数型黏弹性准饱和土中半封闭球 形空腔的位移、应力和孔隙水压力解析表达式. 考察了物性和几何各参数对球形空腔动力响 应的影响, 结果表明: 分数导数本构模型更合理地描述了土体的动力学行为; 饱和度对应力 和孔隙水压力影响较大, 而对位移影响较小.

     

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出版历程
  • 收稿日期:  2011-10-25
  • 修回日期:  2012-03-23
  • 刊出日期:  2012-07-18

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