| Author | Search for: Maciel, M.; Search for: Cortes-Puentes, W. L.1; Search for: Palermo, D. |
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| Affiliation | - National Research Council of Canada. Construction
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| Format | Text, Article |
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| Conference | 2019 Canadian Society for Civil Engineering Annual Conference, CSCE 2019, June 12-15, 2019, Laval, Canada |
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| Subject | 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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| Abstract | 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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| Publication date | 2019-06-12 |
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| Publisher | Canadian Society for Civil Engineering |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | e6461770-2a5b-4d7e-a09a-74fa03316b46 |
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| Record created | 2021-08-24 |
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| Record modified | 2021-08-24 |
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