Seismic resilience evaluation based on vulnerability curves for existing and retrofitted typical RC school buildings

Samadian, Delbaz; Ghafory‐Ashtiany, Mohsen; Naderpour, Hosein; Eghbali, Mahdi

doi:10.1016/j.soildyn.2019.105844

Cited by 77 publications

(29 citation statements)

References 17 publications

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“…The linear recovery function is generally used when there is no information regarding the preparedness, resources available, and societal response. These simplified recovery functions are widely adopted in the recovery assessment of RC frame structures, [23] school buildings, [24] hospital buildings, [26] and hospital network. [47] To ensure structural integrity and safety, the damaged structural components should be repaired before the nonstructural components.…”

Section: Recovery Time and Processmentioning

confidence: 99%

“…For bridges, critical components of the transportation network, their functionality is generally quantified by mapping each global damage state to a value between 0 and 1. [17][18][19] For buildings, the common functionality metrics are repair cost ratio, [20][21][22] direct loss ratio, [23][24][25] asset value, [20] and occupancy level. [20] Besides, there are some other definitions.…”

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confidence: 99%

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Quantitative evaluation and improvement of seismic resilience of a tall frame shear wall structure

Chen

2021

Structural Design Tall Build

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Tall buildings are an important part of a city, and their earthquake-induced damage or collapse will lead to heavy losses, extended repair time, and casualties. Therefore, it is essential to quantify and improve the resilience of tall buildings. To this end, this paper develops a component damage-based metric to characterize tall buildings' functionality loss and then proposes a general quantitative evaluation process to evaluate tall buildings' resilience. Next, the evaluation process is applied to a 42-story reinforced concrete frame shear wall building to demonstrate its applicability. Finally, retrofit strategies on nonstructural components are discussed to enhance the building's resilience. It can be concluded that the proposed metric can be effectively used to evaluate tall buildings' functionality loss. The building being studied has great seismic resilience, with resilience values of 99.95%, 98.68%, and 88.69% at service level earthquake (SLE), design level earthquake (DBE), and maximum considered earthquake (MCE), respectively. The influence of nonstructural components on seismic resilience is greater than that of structural components at SLE and DBE levels. It is an effective alternative to enhance the seismic resilience of tall buildings under SLE and DBE by improving the performance of partition walls, ceilings, and equipment.

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Section: Recovery Time and Processmentioning

confidence: 99%

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confidence: 99%

Quantitative evaluation and improvement of seismic resilience of a tall frame shear wall structure

Chen

2021

Structural Design Tall Build

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“…However, it is necessary to develop and concretely apply the resilience concepts both for decision makers [22,23] and for the practice of professional applications. Some interesting applications have already been presented [24].…”

Section: Introductionmentioning

confidence: 99%

Seismic Retrofitting Resilience-Based for Strategic RC Buildings

et al. 2021

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The resilience of communities is given by the ideal convolution of the resilience of all their single parts. Strategic buildings require high levels of performance during and after a seismic sequence. Consequently, the seismic retrofitting of old strategic buildings is a central issue in prevention and mitigation strategies. The core of the study is a resilience approach to the seismic retrofitting of existing strategic buildings. Different performance levels are considered and four different retrofitting techniques are compared according to their fragility, and their post-earthquake cost and time recovery analyses. Lastly, the retrofitting techniques are compared based on the considered resilience index, which in turn is related to the estimated reduction of the seismic losses owing to the different retrofitting techniques, but especially to the effectiveness of the intervention based on the relevant cost and recovery times. In other words, these aspects take into account the key role of a building’s characteristics, and its public and strategic role during and after an earthquake. The intervention is selected not only (as is currently done) to reduce its construction times and costs, but to limit the service interruption after earthquakes. The results of this study could be operatively used as support tools in the seismic retrofitting of strategic buildings, either individually or on a large territorial scale.

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“…After this broad definition that was introduced by Bruneau and Reinhorn [5], many studies were produced tackling the development and assessment of resilience. Samadian et al [6] conducted a study in Iran to determine the seismic resilience of built and rehabilitated RC school buildings, whereby the study was assessed through utilising vulnerability and fragility curves. The main objective of this study is to implement a new approach which focuses on provincial economic conditions, through the use of vulnerability analysis to estimate earthquake-related losses.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Seismic Resilience of Rc-Buildings Subjected to Repeated Earthquake Using Resilient Index and Fragility Surface Functions

Kassem¹,

Nazri²,

El-Maissi³

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Seismic resilience is a modern approach that aims to return the community of damage to its natural condition in a shortest possible time. Seismic resilience could be interpreted as a structure's ability to maintain a degree of functionality over a particular period of time once it is exposed to seismic events. The research study aims to address with an approach of functionality and seismic resilience of a mid-rise Ordinary Moment Resisting Frame (OMRF) structure subjected to repeated earthquakes. Besides, as a vulnerability and functionality study for risk assessments, both the Seismic Resilience Index (SRI) and the fragility surface were used to determine the seismic resilience of the selected building. The fragility surfaces expressed the probability of damages with respect to intensity measure and seismic event period (T). The concept phases of this approach were as follows: (1): Select targeted buildings, (2): Select and scaled a set of repeated Seismic Ground Motion (SGM) records, (3): Generate an Incremental Dynamic Analysis (IDA), (4): Fragility surface and (5): Functionality curve, with seismic resilience index (RI). Eventually, after investigating the structure through the vulnerability assessment, initiating with IDA, and ending with the fragility surface, it is clearly established that the buildings do not have the capacity to withstand a 15 sec repetitive earthquake due to their ordinary structural design related to ductility demand. Meanwhile, with an increase in the possible seismic ground acceleration, the fluctuation in functionality, SRI, robustness, structural losses, and time recovery of distinct performance levels could be estimated.

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Seismic resilience evaluation based on vulnerability curves for existing and retrofitted typical RC school buildings

Cited by 77 publications

References 17 publications

Quantitative evaluation and improvement of seismic resilience of a tall frame shear wall structure

Quantitative evaluation and improvement of seismic resilience of a tall frame shear wall structure

Seismic Retrofitting Resilience-Based for Strategic RC Buildings

Evaluation of Seismic Resilience of Rc-Buildings Subjected to Repeated Earthquake Using Resilient Index and Fragility Surface Functions

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