Cyclic behavior of hybrid RC columns using High-Performance Fiber-Reinforced Concrete and Ni-Ti SMA bars in critical regions

Pereiro‐Barceló, Javier; Bonet, José; Cabañero-Escudero, Beatriz; Martínez-Jaén, Begoña

doi:10.1016/j.compstruct.2019.01.029

Cited by 26 publications

(20 citation statements)

References 35 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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“…The YSC and SMA are assumed to be consisted of high‐strength steel and Nitinol in this study. According to previous researches, σ c and E c of YSC are adopted as 1,210 MPa and 69,140 MPa, 31,32 respectively, while 470 MPa and 41,000 MPa for SMA, 33–36 respectively. The force–displacement relationships of YSC and SMA are presented in Figures 5a and 4c, respectively, while the detailed information of the parameters in these figures are listed in Table 1.…”

Section: Bridge Prototype and Numerical Modelmentioning

confidence: 99%

Seismic assessment of earthquake‐resilient tall pier bridges using rocking foundation retrofitted with various energy dissipation devices

2020

Struct Control Health Monit

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While conventional seismic isolation bearings are usually inefficient for bridges with tall piers, rocking foundation is a promising approach mitigating their seismic demands and improving post-earthquake resilience. However, excessive tilt angle might occur at rocking interface and lead to overturning during strong earthquake excitations. This paper investigates the efficiency of various energy dissipation devices in improving the seismic performance of rocking foundations employed in tall pier bridge systems. The devices

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“…Over the last few years, high-performance fibre-reinforced concrete (HPFRC) has been widely used to strengthen ageing concrete structures [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ] and to control the crack propagation and displacement in concrete slabs and shells, such as industrial floors, while also improving the seismic response of structural elements, such as columns, beams, and walls [ 8 , 9 ]. Moreover, HPFRC is highly recommended in aggressive environments (e.g., marine environments, higher altitudes, northern areas) due to its high durability which is suitable for long-term structures and heavily loaded bridges to reduce any maintenance costs [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Modelling of the Degradation Processes Induced by Freeze–Thaw Cycles on Bond-Slip Laws of Fibres in High-Performance Fibre-Reinforced Concrete

et al. 2022

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High-performance fibre-reinforced concrete (HPFRC) is a composite material in which the advantages of fibre-reinforced concrete (FRC) are combined with those of a high-performance concrete (HPC), which mitigates the weaknesses of conventional concrete and improves its overall performance. With the aim to reduce the long-term maintenance costs of structures, such as heavily loaded bridges, HPFRC is highly recommended due to its major durability performance. Specifically, its good antifreezing property makes it suitable for application in cold regions where cyclic freeze–thaw conditions cause the concrete to degrade. In this paper, a numerical simulation of the degradation processes induced by freeze–thaw cycles on bond-slip laws in HPFRC beam specimens has been developed so as to assess their effect on the flexural response of specimens as the fibres’ volume percentage changes. Their cracking strength, postcracking strength, and toughness were predicted, with the present model being able to predict the cracking strength, postcracking strength and toughness of the HPFRC beam element under bending load conditions. Its accuracy was confirmed by comparing the model predictions with experimental results.

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Cyclic behavior of hybrid RC columns using High-Performance Fiber-Reinforced Concrete and Ni-Ti SMA bars in critical regions

Cited by 26 publications

References 35 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

Seismic assessment of earthquake‐resilient tall pier bridges using rocking foundation retrofitted with various energy dissipation devices

Theoretical Modelling of the Degradation Processes Induced by Freeze–Thaw Cycles on Bond-Slip Laws of Fibres in High-Performance Fibre-Reinforced Concrete

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