非饱和土层一维固结特性分析

在Fredlund非饱和土的一维固结理论的基础上进行假设，由得出的液相及气相的控制方程、Darcy定律及Fick定律，采用Laplace 变换、逆变换等数学方法得到了大面积均布瞬时加载下表面为透水透气面、底面为不透水和不透气面的非饱和土层一维固结时间域内的超孔隙水压力、超孔隙气压力及土层沉降的解析解；应用典型算例，分析了不同气、水渗透系数比情况下土体超孔隙水压力、超孔隙气压力消散及土层沉降随时间的变化规律以及不同时间超孔隙水压力、超孔隙气压力消散随深度的变化规律。将得出的结果退化成相应的饱和土的解与太沙基饱和土固结理论结果比较，验证了其正确性。

Analysis of one-dimensional consolidation characteristics in unsaturated soils

A set of analytical solutions have been reached through Laplace transform and other mathematical methodologies based on the Fredlund's one-dimensional consolidation theory for unsaturated soil, etc. The problem to be solved is about a layer of soil of finite thickness, adding to one dimension a large-area instantaneous load, while the soil top surface is penetrable and the bottom is impenetrable to water and air. A typical example result was given to analyze the changes in the excess pore-air pressure, excess pore-water pressure and sedimentation rate of soil with respect to time under different conditions air-water coefficient rate, and the changes in the pore-air pressure and excess pore-water pressure with depth at different times. The comparison between the analytical solutions reduced to saturated soils and the Terzaghi solution for saturated soils, indicates that the method is correct.