Potential of memory steel reinforcement for shear strengthening of concrete bridge girders with I-sections
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Détails bibliographiques
| Auteur(s): |
Muhammad Arslan Yaqub
(Magnel-Vandepitte Laboratory, Department of Structural Engineering and Building Materials, Ghent University, Belgium)
Stijn Matthys (Magnel-Vandepitte Laboratory, Department of Structural Engineering and Building Materials, Ghent University, Belgium) Christoph Czaderski (Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland) |
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| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | IABSE Symposium: Challenges for Existing and Oncoming Structures, Prague, Czech Republic, 25-27 May 2022 | ||||
| Publié dans: | IABSE Symposium Prague 2022 | ||||
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| Page(s): | 1180-1187 | ||||
| Nombre total de pages (du PDF): | 8 | ||||
| DOI: | 10.2749/prague.2022.1180 | ||||
| Abstrait: |
This study was carried out to access the performance of near surface mounted (NSM) memory steel reinforcement for shear strengthening of concrete girders with I-sections. Specially designed/strengthened concrete I-sections were tested in tension and the bond behaviour of memory steel was observed and reported as failure mode, load displacement and strain variation. It has been demonstrated that the memory steel reinforcement has a great potential for active shear strengthening of concrete girders with I-section. The activation of memory steel apply prestress on the I-section that delays the cracking and increases the ultimate failure load. The delayed shear cracking will consequently retain the aggregate interlock mechanism that is the main component of shear strength. Besides the additional strength of the external reinforcement, the yielding of internal stirrups is also delayed that further retains the intrinsic shear strength. The results reported in this paper are part of a wider study to investigate various shear strengthening configurations for precast prestressed I-girders using memory steel reinforcement and fibre reinforced polymers (FRPs). |
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| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | Cette oeuvre ne peut être utilisée sans la permission de l'auteur ou détenteur des droits. |
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