Structural behaviour of CFRP strengthened beam-column connections under monotonic and cyclic loading
Article
Article Title | Structural behaviour of CFRP strengthened beam-column connections under monotonic and cyclic loading |
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ERA Journal ID | 211389 |
Article Category | Article |
Authors | Tafsirojjaman, T. (Author), Fawzia, Sabrina (Author) and Thambiratnam, David P. (Author) |
Journal Title | Structures |
Journal Citation | 33, pp. 2689-2699 |
Number of Pages | 11 |
Year | 2021 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 2352-0124 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.istruc.2021.06.028 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S2352012421005257 |
Abstract | Welded beam-column connections may be vulnerable to failure under cyclic loading conditions. These connections might require strengthening to resist static and cyclic loads as they may exhibit inadequate capacity due to the design errors or material properties degradation because of severe environmental effects or an increase in service loads. With this in mind, a series of full-scale experiments have been conducted to investigate the behaviour of the bare and strengthened welded beam-column connections under both monotonic and large-displacement cyclic loading. Carbon fibre reinforced polymer (CFRP) is used as the strengthening material in the present study along with epoxy adhesive as the bonding material. The experimental study conclusively showed the benefits of CFRP composites to improve the performance of welded connections under both monotonic and cyclic loadings. Under monotonic loading, the ultimate moment capacity, stiffness, dissipation of energy and ductility of the welded connections improved by strengthening with CFRP. Additionally, under cyclic loading, the CFRP strengthened welded connections showed improvement in moment hysteresis behaviour, higher stiffness and energy dissipation capacity compared to their bare counterparts. Moreover, the experimentally obtained moment capacities match reasonably well with the theoretically predicted moment capacities. |
Keywords | welded beam-column connections; strengthening; carbon fibre reinforced polymer (CFRP); monotonic loading; cyclic loading |
ANZSRC Field of Research 2020 | 400506. Earthquake engineering |
400510. Structural engineering | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Centre for Future Materials |
Queensland University of Technology | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6681/structural-behaviour-of-cfrp-strengthened-beam-column-connections-under-monotonic-and-cyclic-loading
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