土壤和多孔介质静力和动力特性的基本公式

Basic Formulation of Static and Dynamic Behaviours of Soil and Other Porous Media

摘要: 本文把土壤和岩石或混凝土等多孔性介质当作“固体骨架”和填隙流体所组成的二相介质.对于填充得不饱和的材料而言,还考虑了第三相问题.本文研究了这类介质的本构方程和动力以及运动方程式.也研究它们的各种近似以及其适用范围,包括像固结压实和不排水状态等极有工程价值的特殊情况.最后还研究了有限元离散化,以及各种述及时间问题的土壤问题的解.

Abstract: This paper treats the soil and rock or concrete as a two-phase medium composed of a solid skeleton and an interstitial fluid. Under the unsaturated condition of interstitial fluid, the third phase is taken into consideration. In this paper, we consider the constitutive relation, dynamic and kinematic relations, and also various approximations with their limits of validity, including those of most practical engineering situations such as the consolidation problem and the undrained behaviour. The finite element discretization and the time dependent solution of various classes of soil problem are also discussed.

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