Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12584
Title: An innovative laboratory box for testing nail pull-out resistance in soil
Authors: Yin, JH 
Su, LJ
Keywords: Box
Degree of saturation
Instrumentation
Pull-out
Resistance
Shear strength
Slope
Soil
Soil nail
Issue Date: 2006
Source: Geotechnical testing journal, 2006, v. 29, no. 6, p. 451-461 How to cite?
Journal: Geotechnical Testing Journal 
Abstract: This paper introduces a new soil nail pull-out box with full instrumentation for investigating the soil nail pull-out shear resistance under different controlled conditions. The new box has overcome some limitations of previous pull-out boxes developed by other researchers, the first author, and his co-workers. The box has the following new features: (a) comprehensive transducers are installed, (b) an extension chamber is provided to house an extension part of the soil nail to keep the nail length inside the box constant throughout the testing, (c) a waterproof front cap is placed to cover and seal the soil nail head so that back water pressure can be applied to accelerate the saturation of the soil, and (d) a pressure grouting apparatus is constructed to make it possible to investigate the influence of the cement grouting pressure. The pull-out box can be used to study influences of (a) hole drilling process and stress release, (b) degree of saturation of the soil, (c) cement pressure grouting, (d) overburden pressure, etc. Two copies of such a new soil nail pull-out box have been constructed to accelerate the testing program. A series of soil nail pull-out tests has been conducted using the two boxes. This paper presents details of the new pull-out box, from design, boundary effect analysis, and instrumentation to setup. Typical results from soil nail pull-out tests are presented and discussed.
URI: http://hdl.handle.net/10397/12584
ISSN: 0149-6115
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