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| Work and energy equations and the principle of generalized effective stress for unsaturated soils | |
Zhao CG(赵成刚); Liu Y; Gao FP(高福平)
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| Source Publication | International Journal for Numerical and Analytical Methods in Geomechanics
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| 2009 | |
| Volume | 34Issue:9Pages:920-936 |
| ISSN | 0363-9061 |
| Abstract | The effective stress principle has been efficiently applied to saturated soils in the soil mechanics and geotechnical engineering practice; however, its applicability to unsaturated soils is still under debate. The appropriate selection of stress state variables is essential for the construction of constitutive models for unsaturated soils. Owing to the complexity of unsaturated soils, it is difficult to determine the deformation and strength behaviors of unsaturated soils uniquely with the previous single-effective-stress variable theory and two-effective-stress-variable theory in all the situations. In this paper, based on the porous media theory, the specific expression of work is proposed, and the effective stress of unsaturated soils conjugated with the displacement of the soil skeleton is further derived. In the derived work and energy balance equations, the energy dissipation in unsaturated soils is taken into account. According to the derived work and energy balance equations, all of the three generalized stresses and the conjugated strains have effects on the deformation of unsaturated soils. For considering these effects, a principle of generalized effective stress to describe the behaviors of unsaturated soils is proposed. The proposed principle of generalized effective stress may reduce to the previous effective stress theory of single-stress variable or the two-stress variables under certain conditions. This principle provides a helpful reference for the development of constitutive models for unsaturated soils. |
| Keyword | Unsaturated Soils The Principle Of Effective Stress Work Of Deformation Energy Balance Equation |
| DOI | 10.1002/nag.839 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000279368500003 |
| WOS Keyword | MULTIPHASE POROUS-MEDIA ; CONSTITUTIVE FRAMEWORK ; GRANULAR MATERIAL ; MODELS ; THERMODYNAMICS ; INPUT ; FLOW |
| WOS Research Area | Engineering ; Materials Science ; Mechanics |
| WOS Subject | Engineering, Geological ; Materials Science, Multidisciplinary ; Mechanics |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/33002 |
| Collection | 水动力学与海洋工程重点实验室(2009-2011) |
| Corresponding Author | Zhao CG(赵成刚) |
| Recommended Citation GB/T 7714 | Zhao CG,Liu Y,Gao FP. Work and energy equations and the principle of generalized effective stress for unsaturated soils[J]. International Journal for Numerical and Analytical Methods in Geomechanics,2009,34,9,:920-936. |
| APA | Zhao CG,Liu Y,&Gao FP.(2009).Work and energy equations and the principle of generalized effective stress for unsaturated soils.International Journal for Numerical and Analytical Methods in Geomechanics,34(9),920-936. |
| MLA | Zhao CG,et al."Work and energy equations and the principle of generalized effective stress for unsaturated soils".International Journal for Numerical and Analytical Methods in Geomechanics 34.9(2009):920-936. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| 33001.pdf（172KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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