岩土力学Issue(8)：2189-2194,6.
一个高饱和度非饱和土的本构模型
A constitutive model of unsaturated soils with high saturation
摘要
Abstract
In unsaturated soils with high saturation, gas phase is disconnected, and the occluded gas pressure may change and affect the soil behavior. The properties of unsaturated soils with high saturation are first discussed; and then a constitutive model is developed within an existing constitutive framework of unsaturated soils by using the principle of generalized effective stress. This model takes into account the effect of gas diffusion, with a hardening law accounting for the effect of occluded gas pressure change. To validate the new model, the modeling results are compared with the experimental results available in the literature and the simulated results of existing models. It is shown that this model performs better than existing models, especially for the unsaturated soils at high saturation.关键词
高饱和度/封闭气体/本构模型/非饱和土/广义有效应力原理Key words
high saturation/occluded gas/constitutive model/unsaturated soils/principle of generalized effective stress分类
建筑与水利引用本文复制引用
刘艳,韦昌富,赵成刚,房倩..一个高饱和度非饱和土的本构模型[J].岩土力学,2013,(8):2189-2194,6.基金项目
中央高校基本科研业务费专项资金资助（No.2012JBM081）；国家自然科学基金资助（No.51108022，No.11072255）。 （）
