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基于饱和多孔介质热-水-力完全耦合的控制方程,通过有限Fourier变换及其逆变换,对一维热弹性固结模型进行解析求解,给出土柱内部温度、孔压和位移演化过程的解析表达式。在定义了热固结时间因素和热固结系数等概念的基础上,对非等温条件下饱和土体的热固结特性及其机理进行研究,讨论了土的热固结系数与热扩散系数之比、不同的外力荷载和温度荷载组合等因素对热体积膨胀效应与热固结效应两者耦合作用的影响。此外,还分析了土体热膨胀或收缩对温度演化过程的耦合影响。
Based on the governing equations of complete thermo - hydro - mechanical coupling in saturated porous media, a one - dimensional thermoelastic consolidation model was solved by finite Fourier transform and its inverse transform. The evolution of internal temperature, pore pressure and displacement was analyzed expression. Based on the definition of the factors of thermal consolidation time and the coefficient of thermal consolidation, the thermosetting properties and mechanism of saturated soils under non-isothermal conditions are studied. The relationship between thermal consolidation coefficient and thermal diffusivity Ratio of different external force and temperature load combinations and other factors on thermal volume expansion and thermal consolidation effect of the coupling effect. In addition, the coupling effect of soil thermal expansion or contraction on temperature evolution was also analyzed.