压实土受力压缩过程中的吸力变化

压实土在岩土工程中被广泛应用。为了确保压实土体的稳定性，需要很好地掌握此类土在水-力耦合作用下的体积变化特性。通常采用有限元分析原理来评估压实土在水-力耦合作用下的压缩特性。目前大多数的有限元模型使用全应力来计算压缩应变，忽略了一个重要的非饱和力学变量，即压缩过程中的吸力变化。本文通过分析压缩试验中压实土吸力的变化来评估总应力假设的可行性，证实土的结构和初始条件对吸力变化的影响，分析可能反映吸力变化的各种指示参数，例如土的先期固结应力σp和饱和度Sτ。

Suction changes in compacted soils during mechanical compression

Compacted soils are widely used in geotechnical engineering.To ensure the stability of the structures involving compacted soils,it is essential to well understand the volume change behavior of the soils under the combined mechanical and hydrous effects.Usually,FEM analysis is used to assess the compression properties of compacted soils under combined water-stress effects.Most of the FEM analysis use total stress and neglect an important stress variable for unsaturated soils,i.e.the variation of suction duri...