横观各向同性土中深埋圆形隧道的应力和位移分析
Analysis of stress and displacement around a deep circular tunnel in transversely isotropic soil
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摘要: 基于Biot固结理论,得到在横观各向同性饱和土体中开挖圆形隧道引起的应力、位移及孔隙水压力在时间的拉普拉斯变换域中的解。运用拉普拉斯数值逆变换,得到数值计算结果,分析了隧道边界条件和土体的横观各向同性性质对应力、位移场的变化及孔隙水压力消散的影响。Abstract: Based on Biot’s theory of consolidation, the timedependent analytical solutions of stress,displacement and pore pressure induced by circular tunnel excavation in a transversely isotropic and saturated soil are obtained in the Laplace transform domain. The results of numerically inverse Laplace transform are used to analyze the influences of boundary condition of tunnel and transversely isotropic property of soil on the stress,displacement and pore pressure.