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http://dx.doi.org/10.7843/kgs.2018.34.6.61

Transfer Length of the Soil Nail Induced by the Shear Deformation  

You, Min Ku (Dept. of Civil and Transportation Engrg., Ajou Univ.)
Lee, Sang Duk (Dept. of Civil and Transportation Engrg., Ajou Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.34, no.6, 2018 , pp. 61-73 More about this Journal
Abstract
When the shear deformation occurs on the slope reinforced with soil nail, a passive earth pressure is induced on the ground around the soil nail and the increase of shear deformation causes the earth pressure variation of the ground and the deformation and member force change of the soil nail. In this study, the shear behavior of the soil nail was analyzed experimentally by inducing the shear deformation in the vertical direction of the soil nail using a large-scale direct shear test equipment and it was verified through numerical analysis. The shear test was performed on the bonded length (6D, 8D, 10D and 12D) of the soil nail separated from the shear surface. As a result, it was observed that the continuous increase of the shear deformation caused the damage of the grout and the effect according to the bonded length was analyzed. Through the model test and the numerical analysis, it was confirmed that the transfer length of the soil nail was 0.2~0.22m, which is larger than 0.1m suggested in the previous study, and the shear zone was in the range of 0.6m from the shear surface.
Keywords
Soil nail; Shear behavior; Transfer length; Large-scale direct shear test;
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Times Cited By KSCI : 1  (Citation Analysis)
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