Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9358
Title: Influences of overburden pressure and soil dilation on soil nail pull-out resistance
Authors: Su, LJ
Yin, JH 
Zhou, WH
Keywords: Dilation
Finite element
Overburden pressure
Parametric study
Pull-out resistance
Soil nailing
Issue Date: 2010
Publisher: Elsevier
Source: Computers and geotechnics, 2010, v. 37, no. 4, p. 555-564 How to cite?
Journal: Computers and geotechnics 
Abstract: Soil nailing is the most popular technique for stabilizing newly formed and existing sub-standard slopes in Hong Kong because of its economic and technical advantages. The nail-soil interface shear resistance is an important parameter in design of soil nailed structures. A three-dimensional finite element model was established and used for simulating soil nail pull-out tests. The finite element model was verified by comparing simulated results with measured data. The agreement between the experimental and simulated results in terms of both average pull-out shear stress and stress variation was very good. Using this finite element model, a parametric study was carried out to study the influences of the overburden pressure and soil dilation angle on the soil nail pull-out resistance. The simulated peak pull-out resistance was not directly related to the overburden pressure, which was coincident with the observations in laboratory pull-out tests. The simulated pull-out resistance increased significantly with the increase in dilation angle of the shearing zone. This analysis indicated that the constrained dilatancy of the nail-soil interface and the soil surrounding the nail contributed a lot to the development of peak pull-out resistance.
URI: http://hdl.handle.net/10397/9358
ISSN: 0266-352X
DOI: 10.1016/j.compgeo.2010.03.004
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