Effective stress in unsaturated soils: review with new evidence.
Effective stress in unsaturated soils: review with new evidence.
复制标题
DOI：
10.1061/(asce)1532-3641(2004)4:2(115
复制
发表时间：
2004-01-01
影响因子：
3.7
通讯作者：
Blight, G. E.
中科院分区：
文献类型：
--
作者：
Khalili, N.;Geiser, F.;Blight, G. E.
本文对有效应力原理在非饱和土中的应用进行了评述，并着重分析了以往非饱和土有效应力研究中存在的困难。哈利利和Khabbaz在1998年提出的关系的有效性的有效应力参数，志的测定，检查使用大量的实验数据。结果表明，非饱和土的抗剪强度和体积变化的定量预测可以使用有效应力的概念。本文研究了饱和土和非饱和土在偏应力-有效平均应力平面内临界州线的唯一性，导出了有效应力参数的增量形式。
The application of the effective stress principle to unsaturated soils is critically reviewed, and the reasons underlying the difficulties in previous investigations of the effective stress in unsaturated soils are highlighted. The validity of the relationship proposed by Khalili and Khabbaz in 1998 for the determination of the effective stress parameter, Chi, is examined using an extensive array of experimental data. It is shown that quantitative predictions of shear strength and volume change in unsaturated soils can be made using the effective stress concept. The uniqueness of the critical state line in the deviatoric stress-effective mean stress plane for saturated as well as unsaturated soils is investigated, and the incremental form of the effective stress parameter is derived.