Seismic fragility assessment of superelastic shape memory alloy reinforced concrete shear walls

Abraik, Emad; Youssef, Maged A.

doi:10.1016/j.jobe.2018.05.009

Cited by 34 publications

(4 citation statements)

References 19 publications

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“…Various kinds of SMA-based vibration control devices, such as isolators [ 3 , 4 , 5 , 6 , 7 ] and dampers [ 8 , 9 , 10 , 11 ], have been developed by exploiting the energy dissipation capacity and recentering ability of SMAs. Development in the machining and connection technology has made it possible to use superelastic SMA bars as reinforcement materials in the construction industry, such as in beams [ 12 , 13 , 14 ], columns [ 15 , 16 ], beam–column joints [ 17 , 18 ], and shear walls [ 19 , 20 ]. SMA wires are often applied to confine the concrete cylinder [ 21 ] or retrofit the reinforced concrete column [ 22 ] for seismic application based on their unique mechanical behavior.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Mechanical Properties of Large Shape Memory Alloy Bars under Different Heat Treatments

et al. 2020

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Shape memory alloys (SMAs) are a class of functional materials that possess unique thermomechanical properties, such as shape memory effect (SME), superelasticity (SE), damping, and good fatigue and corrosion resistance, which enable them to become ideal materials for applications in earthquake engineering. Numerous studies have shown that the mechanical properties of superelastic SMAs mainly depend on the wire form, or the relationship between the microstructure and thermally induced phase transitions. However, extremely few studies have elucidated the effects of the heat-treatment strategy, size effect of large diameters, and cyclic loading. Herein, the mechanical properties of SMA bars, such as residual strain, energy dissipation, and equivalent damping ratio, were studied with different heat-treatment strategies, cyclic loadings, and strain amplitudes; this was achieved by conducting cyclic tensile tests on SMA bars with four different diameters. The results indicate that the maximum phase transformation stress was obtained with a 14 mm SMA bar subjected to heat treatment at 400 ℃ for 15 min. The mechanical properties were relatively stable after five loading–unloading cycles, which should be considered in engineering applications. The test results provide a mechanical basis for using large SMA bars in self-centering structures in seismic regions.

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Section: Introductionmentioning

confidence: 99%

Investigation of Mechanical Properties of Large Shape Memory Alloy Bars under Different Heat Treatments

et al. 2020

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“…Based on this model, they analyzed the seismic response of a five-story coupled shear wall and a two-story shear wall structure and compared the experimental results to verify the effectiveness of the model. Abraik and Youssef [ 130 ] used the vulnerability curve to evaluate the seismic performance and vulnerability of 10-story and 20-story structures. The results of interlayer displacement, residual displacement, and vulnerability proved that even if SMA was only applied to the key parts of the edge constraint, it significantly improved the seismic performance and reduced the residual displacement of the structure.…”

Section: The Application Of Sma In Structural Components Of Buildingmentioning

confidence: 99%

The Utilization of Shape Memory Alloy as a Reinforcing Material in Building Structures: A Review

Xu,

Zhu,

Zhao

et al. 2024

Materials

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Shape memory alloy (SMA), a type of smart material, is widely used in the design of reinforcement and repair, isolation, and shock absorption of building structures because of its outstanding characteristics, such as the shape memory effect (SME), superelasticity (SE), and high damping. It not only improves the bearing capacity, ductility, and mechanical properties of the structural components of buildings but can also effectively slow down the strong response of engineering structures under the effect of an earthquake. It plays a key role in energy dissipation and shock absorption as well as sustainable development. To promote the application of SMA in building structures, this paper summarizes the research on the use of SMA as a reinforcing material in building structures, including work related to SMA material characteristics and types, SMA-reinforced structural components, and SMA isolation devices. In addition, the shortcomings of SMA applications in building structures are analyzed, and valuable suggestions for future research methods are put forward. SMA has been applied to engineering practice in the form of embedded and external reinforcement, which shows that it has broad application prospects in future buildings.

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“…Abraik and Youssef [18,19] investigated the effect of the location of SMA bars on the seismic performance of RC walls. Abraik and Youssef [20] assessed the collapse vulnerability of SMA RC walls. The results showed that SMA RC walls exhibited lower seismic damage as compared to steel RC walls.…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance of Hybrid Corrosion-Free Self-Centering Concrete Shear Walls

2022

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Reinforced concrete (RC) walls are extensively used in high-rise buildings to resist lateral loads, while ensuring an adequate level of ductility. Durability problems, including corrosion of conventional steel reinforcements, necessitate exploring alternative types of reinforcement. The use of glass fiber reinforced polymer (FRP) bars is a potential solution. However, these bars cannot be used in seismic applications because of their brittleness and inability to dissipate seismic energy. Superelastic shape memory alloy (SMA) is a corrosion-free material with high ductility and unique self-centering ability. Its high cost is a major barrier to use in construction projects. The clear advantage of utilizing both SMA and FRP to achieve durable self-centering structures has motivated the development of a composite SMA-FRP bar. This paper investigates the hybrid use of FRP bars and either SMA bars or composite SMA-FRP in concrete shear walls. An extensive parametric study was conducted to study the effect of different design parameters on the lateral performance of hybrid RC walls. The seismic behavior of the hybrid walls was then examined. The hybrid walls not only solved the durability problem but also significantly improved the seismic performance.

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Seismic fragility assessment of superelastic shape memory alloy reinforced concrete shear walls

Cited by 34 publications

References 19 publications

Investigation of Mechanical Properties of Large Shape Memory Alloy Bars under Different Heat Treatments

Investigation of Mechanical Properties of Large Shape Memory Alloy Bars under Different Heat Treatments

The Utilization of Shape Memory Alloy as a Reinforcing Material in Building Structures: A Review

Seismic Performance of Hybrid Corrosion-Free Self-Centering Concrete Shear Walls

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