Life-cycle cost evaluation of steel structures retrofitted with steel slit damper and shape memory alloy–based hybrid damper

Noureldin, Mohamed; Naeem, Asad; Kim, Jinkoo

doi:10.1177/1369433218773487

Cited by 38 publications

(15 citation statements)

References 33 publications

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“…SMA restrainers to connect column and deck in a continuous bridge may decrease the bearing damage, but may increase the column damage), and the intensities of ground motions. In addition, life-cycle seismic cost evaluation of a steel building frame retrofitted with the hybrid damper (composed of a steel slit plate and two SMA bars) has shown enhanced economic performance (Noureldin et al, 2018). In these studies, the stressstrain constitutive behavior of the SMA material is simulated by a relatively simple model that neglects thermal and strain rate effects.…”

Section: Introductionmentioning

confidence: 99%

Seismic fragility analyses of steel building frames installed with superelastic shape memory alloy dampers: Comparison with yielding dampers

Gur

Xie

DesRoches

2019

Journal of Intelligent Material Systems and Structures

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Smart materials such as shape memory alloys have unique material properties that can potentially mitigate earthquake hazards on the built environment. Implementation of shape memory alloy-based devices on building structures should incorporate two key factors: (1) distinct mechanical features of the devices and (2) inherent large uncertainty stemming from material properties, building geometry, and ground motions. This study conducts seismic fragility analyses of steel building frames installed with superelastic shape memory alloy dampers, which enable both factors to be appropriately considered. First, a thermomechanical constitutive model is utilized to capture all essential characteristics of the shape memory alloy damper. Next, a probabilistic seismic analysis framework is developed to obtain the seismic demands of three critical engineering demand parameters (i.e. peak interstory drift ratio, residual drift ratio, and top floor acceleration) of the building when subjected to modeling uncertainty and a large set of realistic ground motion inputs. Nonlinear time history responses and the associated short-time Fourier transform demonstrate the superior control efficiency of the shape memory alloy damper in limiting the building’s residual drift and top floor acceleration. Furthermore, seismic fragilities of the buildings when installed with shape memory alloy dampers are compared with those when equipped with yielding dampers. The study indicates that under different levels of ground motions and various ranges of modeling uncertainty in structural parameters, shape memory alloy damper consistently outperforms the yielding damper in reducing the seismic fragility of the building at both component and system levels.

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Section: Introductionmentioning

confidence: 99%

Seismic fragility analyses of steel building frames installed with superelastic shape memory alloy dampers: Comparison with yielding dampers

Gur

Xie

DesRoches

2019

Journal of Intelligent Material Systems and Structures

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“…This is mainly because employing the SMA dampers reduces downtime of the structure over its lifetime, in case probable earthquakes happen. [ 43,44 ]…”

Section: Discussionmentioning

confidence: 99%

Seismic performance assessment of steel frames with shape‐memory alloy wire‐based dampers

Falahian

Asadi

Riahi

et al. 2020

Structural Design Tall Build

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“…Several researches have been carried out to develop novel types of SSDs and to investigate seismic behavior of various kinds of structures equipped with SSDs via theoretical and experimental studies. Among them, box-shaped SSD (Lee and Kim, 2017), block slit damper (BSD; Ahmadie Amiri et al, 2018), hybrid damper composed of a steel slit plate damper and two shape memory alloy bars (NourEldin et al, 2019), multi-slit damper (MSD) combining weak and strong SSDs in series (Naeem and Kim, 2019), and combination of slit damper and T-stub called T-shaped slit damper (TSSD) (Bayat and Shekastehband, 2019; Park and Oh, 2020) can be named. The effect of different shapes of SSDs in their cyclic performance was studied by Kafi and Nik-Hoosh (2019).…”

Section: Introductionmentioning

confidence: 99%

A numerical study on optimum shape of steel slit dampers

Aminzadeh

Kazemi

Tavakkoli

2020

Advances in Structural Engineering

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Steel slit dampers are among the passive energy dissipating devices that have been proposed to improve seismic performance of steel structures. Several experimental and numerical studies have also been carried out to investigate capacity of the dampers in energy dissipation. In this article, a numerical model is developed to obtain optimum boundary shape of the dampers. To achieve this, isogeometric analysis method is utilized as a powerful tool in precise modeling of complex geometries for the purpose of non-linear analysis of the dampers. A conventional steel slit damper shape is modeled by non-uniform rational B-splines, and then, the shape is optimized with the aim of maximizing the structural energy dissipation under a volume constraint. To verify the model, measurements of an experimental test in literature are compared with the model results. A mathematical-based approach is employed for the optimization process and analytical shape sensitivity analysis is performed. As a result of optimization process, a new steel slit damper is suggested and its performance is evaluated via comparing with other shapes suggested in the literature.

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Life-cycle cost evaluation of steel structures retrofitted with steel slit damper and shape memory alloy–based hybrid damper

Cited by 38 publications

References 33 publications

Seismic fragility analyses of steel building frames installed with superelastic shape memory alloy dampers: Comparison with yielding dampers

Seismic fragility analyses of steel building frames installed with superelastic shape memory alloy dampers: Comparison with yielding dampers

Seismic performance assessment of steel frames with shape‐memory alloy wire‐based dampers

A numerical study on optimum shape of steel slit dampers

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