Abstract This paper aims to model the thermo-mechanical behavior of saturated clays under undrained conditions. Classic thermo-hydro-mechanical formulations obtained using different approaches were compared and discussed, showing their compatibility and differences. A thermo-elasto-plastic model called TEAM, using a two-surface approach, was developed for saturated clays under undrained conditions in the framework of thermo-poro-mechanics. The aim of the model is to predict a smooth transition between the elastic and elastoplastic states. Two additional physical parameters, namely volumetric thermal expansion coefficient and pore water compressibility, were back analyzed from the results of the undrained heating tests. By simulating experiments found in the literature, it was shown that this model is appropriate in capturing the evolution of pore water pressure of saturated clays under non-isothermal undrained conditions.

中文翻译：

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不排水条件下饱和粘土的热弹塑性模拟

摘要 本文旨在模拟不排水条件下饱和粘土的热机械行为。比较和讨论了使用不同方法获得的经典热力水力机械配方，显示了它们的兼容性和差异。在热孔隙力学框架内，为不排水条件下的饱和粘土开发了一种称为 TEAM 的热弹塑性模型，该模型使用双表面方法。该模型的目的是预测弹性和弹塑性状态之间的平滑过渡。根据不排水加热试验的结果，对另外两个物理参数，即体积热膨胀系数和孔隙水压缩率进行了反分析。通过模拟文献中发现的实验，