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Coupled Effect of Soil Nail/Slope Systems  

Jeong Sang Seom (Dept. of Civil Engrg. Yonsei Univ.)
Lee Jin Hyung (Dept. of Civil Engrg., Yonsei Univ.)
Lee Sun Keun (Dept. of Civil Engrg., Yonsei Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.21, no.2, 2005 , pp. 127-135 More about this Journal
Abstract
In this paper, a numerical comparison of predictions by limit equilibrium analysis and finite difference analysis is presented for slope/soil-nail system. Special attention is given to the coupled analysis based on the explicit-finite-difference code, FLAC 2D. To this end, an internal routine (FISH) was developed to calculate a factor of safety for a soil nail slope according to shear strength reduction method. The case of coupled analyses was performed for soil nails in slope in which the soil nails response and slope stability are considered simultaneously. In this study, by using these methods, the failure surfaces and factors of safety were compared and analyzed in several cases, such as toe, middle and top of the slope, respectively. Furthermore, the coupled method based on shear strength reduction method was verified by the comparison with other analysis results.
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