工程土障粘土水力-力学参数识别及工程校核

Identification of hydro-mechanical parameters of clay and validation for engineered barriers

基于实验数据及广泛应用于非饱和粘土的 Alonso-Gens本构模型和水力参数曲线 ,针对用以制造工程土障的 Fo Ca粘土进行了水力 -力学参数识别 .并把上述水力 -力学本构模型和曲线及所识别的参数应用于基于非饱和土的多孔多相介质理论的有限元数值模型上 .对一个模拟实际工程问题的 Benchmark考题作了考核 。

Based on the experimental results, the Alonso\|Gens model and the hydrological parameter curves are widely employed for describing the hydro\|mechanical constitutive behavior of unsaturated clays, and the hydro\|mechanical parameters are identified particularly for the FoCa clay used for constructing engineered clay barriers. Then the hydro\|mechanical model and the curves mentioned above and the identified parameters are applied to the finite element model based on the theory of porous media coupled with multiphase pore fluids. The satisfactory numerical results are obtained for a Benchmark test example simulating engineering problems.