Abstract
Three ground treatment methods such as gravel piles, shallow or deep dynamic replacement, are introduced to stabilize a high fill foundation. A typical engineering geological profile for the formed high fill slope under three ground treatments, is used to calculate the static and pseudo-static stability by shear strength reduction FEM (SSR-FEM). In the study, the pseudo-static seismic loading, together with gravity are exerted to the high fill slope, numerical analysis of slope stability and the corresponding failure criterion is combined to implement the procedure of automatic searching for the factor of safety (FOS) and critical sliding surface (CSS). In particular, without reducing soil strength parameters, comparative studies of displacements and shear strains of the high fill slope subjected to pseudo-static seismic loading are also performed under different ground treatments. The results show that the three ground treatments for the relative soft foundation within slope toe can not only enhance effectively the slope stability, but also reduce the maximum displacements and shear strains. From a practical viewpoint, the treatment method with dynamic replacement to 10 m depth is the optimal one in the three cases discussed in the present project after a reasonable comparative analysis.
International Symposium on Earthquake-induced Landslide, Gunma University, Kiryu Japan, November 7–9, 2012.
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Acknowledgments
The authors wish to acknowledge the supports of the National Natural Science Foundation of China (Grant No.51179022), the Fundamental Research Funds for the Central Universities (Grant No.DUT12LK19) and the Open Research Fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, CUT(Grant No.SKLGP2010K005).
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© 2013 Springer-Verlag Berlin Heidelberg
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Nian, TK., Li, DC., Xu, HY., Chen, GQ. (2013). Pseudo-Static Stability Analysis of High Fill Slopes by the Shear Strength Reduction FEM. In: Ugai, K., Yagi, H., Wakai, A. (eds) Earthquake-Induced Landslides. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-32238-9_62
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DOI: https://doi.org/10.1007/978-3-642-32238-9_62
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