| Auteur | Rechercher : Maciel, M.; Rechercher : Cortes-Puentes, W. L.1; Rechercher : Palermo, D. |
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| Affiliation | - Conseil national de recherches du Canada. Construction
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| Format | Texte, Article |
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| Conférence | 2019 Canadian Society for Civil Engineering Annual Conference, CSCE 2019, June 12-15, 2019, Laval, Canada |
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| Sujet | binary alloys; composite structures; concrete buildings; damage detection; deformation; energy dissipation; office buildings; seismic design; seismic waves; seismology; shape-memory alloy; shear flow; shear walls; Titanium alloys |
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| Résumé | The seismic performance of hybrid Shape Memory Alloy (SMA)-steel concrete shear walls containing Nickel-Titanium (Ni-Ti) superelastic SMA as alternative reinforcement in the plastic hinge zone is investigated. This wall system permits self-centering with high levels of energy dissipation and significant reduction of permanent deformations. A ductile type of Reinforced Concrete (RC) shear wall was investigated for a prototype 10-storey office building in the seismic design scenario of western Canada. The wall was designed according to the current Canadian design standards as conventional deformed steel-reinforced concrete shear wall. The resulting cross-section was used to define the geometry and reinforcement layout of equivalent hybrid SMA-steel RC wall. Full-scale 2-D Finite Element (FE) models of the walls were developed and subjected to nonlinear reverse cyclic analyses. Similarities in cross-section permitted a reliable comparison and assessment of the post-loading condition, including displacement capacity and drift, damage, residual displacement, and energy dissipation. The observed response of the hybrid SMA-steel wall, when compared to that of the steel-reinforced wall, indicated similar lateral capacity, slightly lower energy dissipation, and superior restoring capacity. In general, the introduction of Ni-Ti bars in the plastic hinge region of shear walls showed potential to optimize the seismic performance of reinforced concrete buildings, controlling residual deformations and thereby reducing damage to structural elements. |
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| Date de publication | 2019-06-12 |
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| Maison d’édition | Canadian Society for Civil Engineering |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | e6461770-2a5b-4d7e-a09a-74fa03316b46 |
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| Enregistrement créé | 2021-08-24 |
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| Enregistrement modifié | 2021-08-24 |
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