Effects of cyclic loading on the shear behaviour of infilled rock joints under constant normal stiffness conditions
Article
Article Title | Effects of cyclic loading on the shear behaviour of infilled rock joints under constant normal stiffness conditions |
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ERA Journal ID | 4070 |
Article Category | Article |
Authors | Mirzaghorbanali, Ali (Author), Nemcik, Jan (Author) and Aziz, Naj (Author) |
Journal Title | Rock Mechanics and Rock Engineering |
Journal Citation | 47 (4), pp. 1373-1391 |
Number of Pages | 19 |
Year | 2014 |
Publisher | Springer |
Place of Publication | Austria |
ISSN | 0723-2632 |
1434-453X | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s00603-013-0452-1 |
Web Address (URL) | https://link.springer.com/article/10.1007/s00603-013-0452-1/fulltext.html |
Abstract | The variation of the shear strength of infilled rock joints under cyclic loading and constant normal stiffness conditions is studied. To simulate the joints, triangular asperities inclined at angles of 9.5° and 18.5° to the shear movement were cast using high-strength gypsum plaster and infilled with clayey sand. These joints were sheared cyclically under constant normal stiffness conditions. It was found that, for a particular normal stiffness, the shear strength is a function of the initial normal stress, initial asperity angle, joint surface friction angle, infill thickness, infill friction angle, loading direction and number of loading cycles. Based on the experimental results, a mathematical model is proposed to evaluate the shear strength of infilled rock joints in cyclic loading conditions. The proposed model takes into consideration different initial asperity angles, initial normal stresses and ratios of infill thickness to asperity height. |
Keywords | rock joints; Infill material; shear behaviour; cyclic loading; constant normal stiffness conditions |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Wollongong |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3y3v/effects-of-cyclic-loading-on-the-shear-behaviour-of-infilled-rock-joints-under-constant-normal-stiffness-conditions
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