Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28066
Title: Influence of grouting pressure and overburden stress on the interface resistance of a soil nail
Authors: Yin, JH 
Zhou, WH
Keywords: Cements
Grouting
Pullout
Shear stress
Slopes
Soil nailing
Soils
Stress
Issue Date: 2009
Publisher: American Society of Civil Engineers
Source: Journal of geotechnical and geoenvironmental engineering, 2009, v. 135, no. 9, 007909QGT, p. 1198-1208 How to cite?
Journal: Journal of geotechnical and geoenvironmental engineering 
Abstract: Grouted soil nails are widely used in slope stabilization. The influence of both grouting pressure and overburden stress on the soil-nail pullout interface shear resistance is still not well understood due to the complex of soil-grout interactions. A series of laboratory soil-nail pullout tests have been carried out on a completely decomposed granite soil in nearly saturated condition under a combination of different grouting pressures and overburden stresses. The pullout tests simulate the real construction process of a soil nail, including establishment of initial soil stresses in a soil slope, drilling a hole with stress release, grouting, and soil-nail pullout when the slope is sliding. The pullout box is well instrumented. Test data are collected automatically by a data logger. Typical test results are presented, explained, and discussed in this paper. The soil-nail interface shear resistance data from all tests are analyzed and interpreted. The study shows that the grouting pressure and overburden stress have interactional influence on the soil-nail pullout resistance. Based on the test results, a new empirical liner equation with two grouting pressure dependent parameters is proposed for calculation of soil-nail pullout resistance considering both grouting pressure and overburden stress. New understandings and findings from the study are presented.
URI: http://hdl.handle.net/10397/28066
ISSN: 1090-0241
EISSN: 1943-5606
DOI: 10.1061/(ASCE)GT.1943-5606.0000045
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