Performance evaluation of RC-MRFs with UHPSFRC and SMA rebars subjected to mainshock-aftershock sequences

Ghasemi, Marziyeh; Khorshidi, Hossein; Fanaie, Nader

doi:10.1016/j.istruc.2021.02.058

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…Hence, in recent years, there has been a growing interest in the performance evaluation of structures subjected to seismic sequences. These studies investigated the impact of seismic sequences on various types of structures, such as conventional frames (Khansefid 2021a; Ghasemi et al, 2021; Moustafa and Takewaki 2016; Trevlopoulos et al, 2020), structures equipped with vibration control systems (Han et al, 2014; Rinaldin et al, 2017; Khansefid 2021b; Zhai et al, 2017), dams (Wang et al, 2017; Zhang et al, 2013), bridges (Chen et al, 2022; Ge et al, 2012), nuclear structure (Wang et al, 2019) and reticulated dome (Zhang et al, 2020). In addition, new studies were conducted using self-centering techniques to improve the seismic performance of structures under seismic sequences (Silwal and Ozbulut 2018; Shi et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Aftershock fragility assessment of steel gabled frames consisting of web-tapered members

Malekizadeh

Fanaie

Pirasteh

2023

Advances in Structural Engineering

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Due to the widespread construction of steel gabled frame systems throughout the world, many of them are located in regions with high seismicity and experience sequential strong events in the future. Previous studies have clearly shown that the damage caused by the mainshock modifies the overall strength and stiffness and consequently dynamic response to the aftershock. However, the current structural design process only considers the main seismic event, and the post-mainshock scenarios and their effects are generally ignored. In order to address this issue, in the present study, the mainshock incremental dynamic analysis (IDA) was first conducted on four SGFs. Then mainshock damage states based on the transient absolute maximum drift angle were considered, and aftershock incremental dynamic analysis analysis was performed on the mainshock-damaged structures. Aftershock fragility curves using probabilistic seismic demand models for transient absolute maximum drift angle and median IDA curves for residual absolute maximum drift angle were developed to compare intact and pre-damaged SGFs. The results showed that aftershocks significantly increase the vulnerability of short-period SGFs when higher damages are induced during mainshock, where the aftershock collapse capacity is reduced by up to 13% for the largest mainshock damage state. It was also found that in terms of aftershock collapse capacity associated with the residual absolute maximum drift angle, long-period SGFs require major realignment while short-period SGFs cannot be repaired.

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Section: Introductionmentioning

confidence: 99%

Aftershock fragility assessment of steel gabled frames consisting of web-tapered members

Malekizadeh

Fanaie

Pirasteh

2023

Advances in Structural Engineering

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“…Some available past earthquake histories highlighted that repeated earthquakes create damage accumulation [5], which induced structural damage and the collapse of infrastructure [3,4]. The reduction in stiffness due to multiple earthquakes is a significant factor [6] and some researchers have examined the accumulated damage to structures by treating multiple seismic events as repeated cyclic loading [7][8][9][10][11]. Furthermore, studies by Amadio et al [12] and Di Sarno [1] investigated the behaviour of structures under multiple earthquakes by assuming a structure as a single-degree-of-freedom system to identify the factors, such as structural period, type of earthquake pulse, and level of available ductility, which may influence the damage accumulation.…”

Section: Introductionmentioning

confidence: 99%

A Reliability-Based Framework for Damage Accumulation Due to Multiple Earthquakes: A Case Study on Bridges

et al. 2023

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Damage accumulation due to multiple seismic impacts over time has a significant effect on the residual service life of the bridge. A reliability-based framework was developed to make decisions in bridge maintenance activities. The feature of the framework enables quantifying the time-dependent probability of failure of bridges due to the impact of multiple earthquakes and progressive deterioration. To estimate the reliability of the bridge systems, the probability of failure of the bridge was used. Two case studies were utilised to demonstrate how the method can be applied to the real world. Results show that the accumulated damage caused by multiple earthquakes and progressive deterioration significantly impact the remaining useful life of the bridge. Furthermore, the soil conditions predominantly influence the progressive deterioration and reduce the service life of the bridge. Overall, the proposed framework enables the sustainable decision-making process for bridge maintenance activities. The results reveal the necessity of including the combined impact in the bridge maintenance system and that there is a more than 40% increase in the probability of failure, due to the combined effect of progressive deterioration and earthquake impacts, compared to the impact only due to seismic loads for the considered case study bridge.

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Seismic performance assessment of steel frames with slack cable bracing systems

Ghasemi

Zhang

Abedini

et al. 2022

Engineering Structures

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Performance evaluation of RC-MRFs with UHPSFRC and SMA rebars subjected to mainshock-aftershock sequences

Cited by 5 publications

References 29 publications

Aftershock fragility assessment of steel gabled frames consisting of web-tapered members

Aftershock fragility assessment of steel gabled frames consisting of web-tapered members

A Reliability-Based Framework for Damage Accumulation Due to Multiple Earthquakes: A Case Study on Bridges

Seismic performance assessment of steel frames with slack cable bracing systems

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