Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/35501
Title: Prediction of the nonlinear pull-out response of FRP ground anchors using an analytical transfer matrix method
Authors: Zheng, JJ
Dai, JG 
Keywords: Bond-slip
FRP rod
Ground anchor
Load-displacement curve
Maximum pull-out load
Transfer matrix method
Issue Date: 2014
Publisher: Elsevier
Source: Engineering structures, 2014, v. 81, p. 377-385 How to cite?
Journal: Engineering structures 
Abstract: Fiber-reinforced polymer (FRP) rods have been increasingly used in grouted ground anchors due to their high strength-to-weight ratio, excellent corrosion resistance, and convenience in incorporating the fiber sensing technology. To establish their pull-out capacity, FRP rods are usually embedded within a grouted steel tube and then subjected to pull-out in the laboratory. The aim of this paper is to develop a numerical method for predicting the nonlinear pull-out response of FRP rods embedded in steel tubes filled with cement grout. In the method, the cement grout is assumed to be subject to simple shear, the local interfacial bond stress-slip model of the bar-to-grout interface is represented by a piece-wise curve comprising elastic, softening, and frictional stages, and the unloading effect is also taken into account. A set of two second-order ordinary differential equations are derived in terms of the displacements of the FRP rod and steel tube and solved analytically to formulate the element transfer matrix. When the thickness of the steel tube approaches infinity, this method can be applied to the problem of FRP rods embedded in rock. Based on the developed numerical method, the interfacial bond properties and snapback phenomenon are analyzed. After the method is validated by comparisons with four sets of experimental data, the effects of the radius and length of FRP rods, the local peak bond stress and the residual frictional strength on the maximum pull-out load are evaluated in a quantitative manner.
URI: http://hdl.handle.net/10397/35501
ISSN: 0141-0296 (print)
1873-7323 (online)
DOI: 10.1016/j.engstruct.2014.10.008
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

3
Last Week
0
Last month
Citations as of Jan 23, 2017

WEB OF SCIENCETM
Citations

3
Last Week
0
Last month
Citations as of Jan 22, 2017

Page view(s)

13
Last Week
0
Last month
Checked on Jan 22, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.