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基于考虑热渗效应和等温热流效应的热-水-力耦合的线性热弹性固结控制方程,建立无限长空心圆柱饱和多孔介质热固结问题的一种理论求解方法。该方法先给出Laplace变换域上的解,然后,利用Stehfest法求其数值逆变换。该理论解考虑了空心圆柱体内、外透水界面随时间变化的外力和温度荷载耦合作用过程。最后,通过一算例分析了饱和多孔介质的热固结特征,给出其温度、孔压、位移和应力的演化规律。
Based on the thermo-hydro-mechanical coupling governing the thermo-hydro-mechanical coupling equation, which considers the effects of thermal infiltration and isothermal heat flux, a theoretical solution to the problem of thermo-mechanical consolidation in infinite-length hollow cylindrical saturated porous media is established. The method first gives the solution on the Laplace transform domain, and then uses the Stehfest method to find the inverse of the transform. The theoretical solution considers the external force and the temperature load coupling process of the inner and the outer water-permeable interface of the hollow cylinder with time. Finally, an example is given to analyze the thermal consolidation characteristics of saturated porous media, and the evolution rules of temperature, pore pressure, displacement and stress are given.