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 doi:

DOI: 10.3724/SP.J.1249.2017.05495

Journal of Shenzhen University Science and Engineering (深圳大学学报理工版) 2017/34:5 PP.495-500

Slope stability analysis considering systematic error of axial translation technique

• Li Hui 1   Jia Hongjing 2   Cheng Xuelei 3   Gui Chao 4   Pan Linna 2   Zhang Ruimin 1
• 1.School of Civil Engineering, Zhengzhou Technology and Business University, Zhengzhou 451400, Henan Province, P. R. China;
• 2.School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, P. R. China;
• 3.Department of Civil Engineering, Dalian Maritime University, Dalian 116026, Liaoning Province, P. R. China;
• 4.School of Civil Engineering and Architecture, Xinxiang University, Xinxiang 453003, Henan Province, P. R. China

Abstract：
In order to analyze the stability of unsaturated soil slope, we investigate the influence of saturation on permeability coefficient. We establish the relationship between the soil water characteristic curve (SWCC) and the unsaturated soil strength under the consideration of the permeability coefficient and matric suction. Using Abaqus finite element simulation software, we compare the SWCC measured by axial translation technique and modified calculation method, and analyze pore water pressure, the slope position, slope deformation, and the plastic zone of the slope. The results show that the direct analysis of slope stability by SWCC with axial translation technique will give smaller slope deformation and smaller equivalent plastic zone than those of the real situation, and the real strength will be exaggerated. So there exists a security problem. The application of SWCC with correction calculation method can better grasp the real situation in the slope soil and reduce the engineering hidden trouble.

Key words：soil mechanics,saturation,permeability coefficient,soil water characteristic curve,side slope,plastic zone

ReleaseDate：2017-10-20 02:07:30

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