Numerical analysis of seepage–deformation in unsaturated soils
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- 作者：Enlong Liu (1)
Hai-Sui Yu (2)
Gang Deng (3)
Jianhai Zhang (1)
Siming He (4) - 关键词：Finite element method ; Seepage–deformation coupled analysis ; Unsaturated soil ; Water infiltration
- 刊名：Acta Geotechnica
- 出版年：2014
- 出版时间：December 2014
- 年：2014
- 卷：9
- 期：6
- 页码：1045-1058
- 全文大小：1,131 KB
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Hai-Sui Yu (2)
Gang Deng (3)
Jianhai Zhang (1)
Siming He (4)
1. State Key Laboratory of Hydraulics and Natural River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu, 610065, People’s Republic of China
2. Nottingham Centre for Geomechanics, University of Nottingham, Nottingham, NG7 2RD, UK
3. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, 100048, People’s Republic of China
4. Institute of Mountain Hazards and Environment, CAS, Chengdu, 610041, People’s Republic of China - ISSN：1861-1133
文摘
A coupled elastic–plastic finite element analysis based on simplified consolidation theory for unsaturated soils is used to investigate the coupling processes of water infiltration and deformation. By introducing a reduced suction and an elastic–plastic constitutive equation for the soil skeleton, the simplified consolidation theory for unsaturated soils is incorporated into an in-house finite element code. Using the proposed numerical method, the generation of pore water pressure and development of deformation can be simulated under evaporation or rainfall infiltration conditions. Through a parametric study and comparison with the test results, the proposed method is found to describe well the characteristics during water evaporation/infiltration into unsaturated soils. Finally, an unsaturated soil slope with water infiltration is analyzed in detail to investigate the development of the displacement and generation of pore water pressure.