| 粘弹性土体中深埋圆形隧道的应力和位移分析 |
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| 引用本文： | 刘干斌,谢康和,施祖元.粘弹性土体中深埋圆形隧道的应力和位移分析[J].工程力学,2004,21(5):132-138. |
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| 作者姓名： | 刘干斌 谢康和 施祖元 |
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| 作者单位： | 浙江大学岩土工程研究所,浙江,杭州,310027;浙江省建筑设计研究院,浙江,杭州,310006 |
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| 摘 要： | 基于Biot固结理论,采用渗流-力学耦合模型,研究分析了粘弹性饱和土体中因开挖深埋圆形隧道而引起的周围土体的应力和位移场。假设衬砌和土体均为多孔介质,隧道处于半封闭状态,边界半透水。在拉普拉斯变换域中得到的应力、位移场和孔隙水压力解答,运用拉普拉斯数值逆变换得到数值计算结果,分析了隧道周围土体中应力、位移场及孔隙水压力的消散规律,讨论了隧道边界的渗透特性和土体的流变性质对应力、位移场以及孔隙水压力消散的影响。
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| 关 键 词： | 粘弹性 饱和土 圆形隧道 半透水边界 固结 |
| 文章编号： | 1000-4750(2004)05-0132-07 |
ANALYSIS OF STRESS AND DISPLACEMENT AROUND A DEEP CIRCULAR TUNNEL IN VISCOELASTIC SOIL |
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| LIU Gan-bin,XIE Kang-he,SHI Zu-yuan.ANALYSIS OF STRESS AND DISPLACEMENT AROUND A DEEP CIRCULAR TUNNEL IN VISCOELASTIC SOIL[J].Engineering Mechanics,2004,21(5):132-138. |
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| Authors: | LIU Gan-bin XIE Kang-he SHI Zu-yuan |
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| Affiliation: | LIU Gan-bin1,XIE Kang-he1,SHI Zu-yuan2 |
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| Abstract: | Based on Biots theory of consolidation, the stresses, displacements and pore pressure induced by a deep tunnel excavation in viscoelastic saturated soil are investigated in the Laplace transform domain using the coupled poro-mechanical model. The liner and the soil are assumed to be porous medium. The tunnel is partially sealed and the boundary of tunnel is partially permeable. Numerical results are obtained by inverse Laplace transformation and are used to analyze the distribution of stresses, displacement and pore pressure around the tunnel. The influence of permeability of the tunnel boundary and soil viscosity on the field of stresses, displacements and pore pressure is discussed. |
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| Keywords: | viscoelasticity saturated soil circular tunnel partially permeable boundary consolidation |
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