岩土工程学报Issue(8)：1449-1453,5.DOI:10.11779/CJGE201508013
基于SFG模型的非饱和膨胀土本构模型研究
Constitutive model for unsaturated expansive clays based on SFG model
摘要
Abstract
The framework for the behaviour of unsaturated expansive clays (G–A model) proposed by Gens and Alsono can explain the mechanical behaviour of expansive clays, in which the fundamental characteristic is the explicit consideration of microstructural and macrostructural deformations. The constitutive models based on the framework of G–A model have a lot of parameters which are hard to be determined. The constitutive model in this work deduces the neutral loading lines in the framework of SFG model. The total deformations reflect micro-level deformation, therefore it is not necessary to distinguish between micro-level and macro-level structural deformations. It allows the constitutive model for unsaturated expansive clays to reduce parameters. A mathematical formulation of the model is assessed by comparison with the experimental data available in literatures. The model predictions agree with the experimental results.关键词
膨胀土/SFG模型/非饱和土/中性加载面Key words
expansive clay/SFG model/unsaturated soil/neutral loading line分类
建筑与水利引用本文复制引用
李吴刚,杨庆,刘文化,杨钢..基于SFG模型的非饱和膨胀土本构模型研究[J].岩土工程学报,2015,(8):1449-1453,5.基金项目
国家自然科学基金项目 （）
