Shear strength properties of cable bolts using a new double shear instrument, experimental study, and numerical simulation

Mirzaghorbanali, Ali and Rasekh, Haleh and Aziz, Naj and Yang, Guanyu and Khaleghparast, Saman and Nemcik, Jan (2017) Shear strength properties of cable bolts using a new double shear instrument, experimental study, and numerical simulation. Tunnelling and Underground Space Technology, 70 (70). pp. 240-253. ISSN 0886-7798

Abstract

A newly developed double shear apparatus without contact between concrete blocks was developed to conduct a series of double shear tests. This new double shear apparatus is capable of determining the pure shear strength of pre-tensioned fully grouted cable bolt without friction between sheared concrete blocks. Five different types of cable bolt, with various pretension loads, were tested to investigate the influence of surface profile type and pretension load on the shear strength of cable bolt. Concrete blocks of 40 MPa strength and the Stratabinder HS grout were used for consistency across the entire tests. The results showed that the plain cable bolts had higher peak shear load compared with the indented and spiral strand cable bolts. The shear displacement and peak shear load decreased by increasing the pretension load. A numerical analysis was carried out, based on the Fast Lagrangian Analysis of Continua (FLAC 2D) and the result was compared with the experimental data. It was observed that FLAC 2D is capable of simulating the performance of cable bolt satisfactorily.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 18 Dec 2017 05:41
Last Modified: 12 Jan 2018 05:36
Uncontrolled Keywords: Cable bolts; Double shear; Shear strength; Numerical analysis
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091402 Geomechanics and Resources Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091405 Mining Engineering
Identification Number or DOI: 10.1016/j.tust.2017.07.018
URI: http://eprints.usq.edu.au/id/eprint/33051

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