Safety factor calculation of soil slope reinforced with piles based on Hill’s model theory

How to evaluate reasonably the stability of a soil slope reinforced with piles (SSRP) still is an urgent problem. At present, the three-dimensional (3D) finite element strength reduction method has been used for the soil slope stability analysis. However, to accurately determine the global instabili...

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Bibliographic Details
Published in:Environmental earth sciences 2014-04, Vol.71 (8), p.3423-3428
Main Authors: Xu, Jiancong, Niu, Fusheng
Format: Article
Language:English
Subjects:
algorithms
Biogeosciences
Earth and Environmental Science
Earth Sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Engineering geology
Environmental Science and Engineering
Exact sciences and technology
Finite element method
Geochemistry
Geology
Hydrology/Water Resources
Mathematical analysis
Mathematical models
Natural hazards: prediction, damages, etc
Original Article
Reduction
Safety
safety factor
Slope stability
soil
Soil (material)
Soil stability
Soils
Stability
Stability analysis
Strength
Terrestrial Pollution
Theory
Three dimensional
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Summary:How to evaluate reasonably the stability of a soil slope reinforced with piles (SSRP) still is an urgent problem. At present, the three-dimensional (3D) finite element strength reduction method has been used for the soil slope stability analysis. However, to accurately determine the global instability of soil slopes is the key to implementing the strength reduction finite element method. In this paper, the 3D finite element strength reduction algorithm (FESRA), based on Hill’s model theory, is proposed to assess the stability of SSRP and study on the relationship between the safety coefficients of SSRP and the displacements of slope mass. The results show that: (1) the relationship between the safety coefficients of SSRP and the displacements of slope mass agrees with the Hill’s model; (2) the proposed method (3D FESRA based on Hill’s model theory) in this study may take into account simultaneously the pile response and slope stability, and makes the results of SSRP stability analysis reasonable and reliable, which could be used as a reference for the evaluation of stability of the same type of slope; and (3) further study should be done to confirm whether the proposed method in this study is suitable for other types of slopes.
ISSN:1866-6280
1866-6299
DOI:10.1007/s12665-013-2730-3