Evaluating Collapse Fragility Curves for Existing Buildings Retrofitted Using Seismic Isolation

Flora, Amedeo; Perrone, Giuseppe; Cardone, Donatello

doi:10.3390/app10082844

Cited by 10 publications

(10 citation statements)

References 17 publications

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“…The collapse of the isolation system was assumed to occur when at least 50% of the isolation or sliding devices reach one of the failure conditions described in what follows. Three collapse modes were considered for the isolation system: (1) buckling, (2), cavitation, and ( 3) shear (Flora et al, 2020). Buckling failure was assumed to be attained for an axial compressive strain equal or larger than 50% (i.e.…”

Section: Post-retrofit Earthquake Loss Assessmentmentioning

confidence: 99%

Multi-criteria decision-making approach for optimal seismic/energy retrofitting of existing buildings

et al. 2023

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Given the current climate emergency and the ambitious targets of carbon emissions reduction worldwide, retrofitting strategies on existing buildings are typically aimed at reducing their energy demand, decarbonizing the power supply, and addressing embodied carbon stored in construction materials. However, the contribution of potential earthquake-induced impacts has been traditionally not considered, while the consequences of several past events highlighted their relevant impact on the environment due to post-disaster rehabilitation activities. This study presents a multi-criteria decision-making approach for the identification of optimal renovation strategies for existing buildings, based on economic and environmental life cycle impacts (including both earthquake-induced losses and energy consumption), payback period of the retrofit investment and expected loss of life due to seismic hazard, through its application to a case-study building. Such parameters are thus suggested as meaningful decision-making variables for the choice of the best retrofitting strategy for a given building, that is the one that leads to an optimal balance between reduction of seismic vulnerability and increase of energy efficiency, based on the climatic conditions and the seismic hazard at the site of interest.

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Section: Post-retrofit Earthquake Loss Assessmentmentioning

confidence: 99%

Multi-criteria decision-making approach for optimal seismic/energy retrofitting of existing buildings

et al. 2023

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“…Understanding the collapse behavior of existing buildings retrofitted with seismic isolation is still a work in progress [33].…”

Section: Seismic Isolation System (Sis)mentioning

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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“…A numerical model validated with multi-scale experimental tests (material, structural, and system scales) [8][9][10] is a powerful tool for parametric analyses. A calibrated numerical model is beneficial in understanding the behavior of a structure and estimating the performance to generate a fragility curve [11,12].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Use Time of a Shake Table with Specimen Preparation outside the Table Surface

et al. 2022

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The shake table test is one of the preferred techniques used to understand the dynamic response of a structure. However, due to the limited number of facilities available to perform such tests and their expensiveness, researchers often must rely on numerical models validated with the results of the static tests only. Moreover, most research papers concerning shake table tests lack details on how the tests were planned and executed. This paper explains the steps used for the preparation and execution of shake table tests on three reduced-scale buildings. These buildings were constructed outside the shake table surface, on a metallic base frame, and later moved to the shake table used for the tests in order to optimize the time of the experimental campaign. This approach enabled us to complete the tests in only 6 days. The approach presented in this paper may be helpful to researchers who want to increase the effectiveness of the available shake table facility and overcome the limitations of time and budget. Moreover, the solution presented in this article helps in the displacement of specimens without the use of a crane or other sophisticated hydraulic machinery. Thus, it could also be useful for testing specimens that have been aged and that are sensitive to displacements.

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Evaluating Collapse Fragility Curves for Existing Buildings Retrofitted Using Seismic Isolation

Cited by 10 publications

References 17 publications

Multi-criteria decision-making approach for optimal seismic/energy retrofitting of existing buildings

Multi-criteria decision-making approach for optimal seismic/energy retrofitting of existing buildings

Seismic Retrofitting Resilience-Based for Strategic RC Buildings

Optimization of the Use Time of a Shake Table with Specimen Preparation outside the Table Surface

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