Study on Constitutive Model for Unsaturated Structural Loess
详细信息
- 责任者：Jin Xu (School of Civil Engineering ; Beijing Jiaotong University ; Beijing 100044 ; China) ; Zhao Chenggang
- 刊名：Journal of Engineering Geology
- 出版年：2010
- 卷期：18(4)
- 关键词：非饱和土 ; unsaturated soil ; 黄土类土 ; loessial soil ; 本构方程 ; constitutive equation
- 页码：p.548-553
- 图表：3 illus., 1 table, 21 refs.
- 分类号：1702
- issnNo：ISSN1004-9665
- isbnNo：CN11-3249/P
摘要
On the basis of disturbed state concept for saturated soils, a new expression form of coupled disturbing variable for unsaturated soils is defined in this paper, in which both of disturbance factors that external force and wetting are considered. Moreover, a new constitutive model of unsaturated intact soils is build up in accordance with homogenization theory for composites materials, and the evolution equation of the coupled disturbing variable is proposed. Comparing the calculation results of BBM and this model with the experimental results respectively, it can be seen clearly that this model can better simulate the mechanical properties of unsaturated intact loess.
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