Predictive hybrid fragility models for urban scale seismic assessment: a case study in Basilicata Region (Italy)

Sandoli, Antonio; Pacella, G.; Calderoni, Bruno; Brandonisio, Giuseppe; Lignola, Gian Piero; Prota, Andrea

doi:10.1007/s10518-022-01569-8

Cited by 3 publications

(1 citation statement)

References 34 publications

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“…In particular, several methods are available in the current literature for defining fragility curves for aggregate buildings in historic centers. These methods are based on empirical [22], analytical [2,[37][38][39][40][41], and hybrid approaches [42][43][44]. In this context, one of the main and still open issues regards the evaluation of the so-called aggregate effect on the fragility curves for out-of-plane mechanisms, which could play a crucial role in the vulnerability of historic buildings at urban scales.…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Aggregate Configuration on the Seismic Assessment of Unreinforced Masonry Buildings in Historic Urban Areas

Cima,

Tomei,

Grande

et al. 2024

Sustainability

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Unreinforced masonry (URM) buildings in historic urban areas of European countries are generally clustered in an aggregate configuration and are often characterized by façade walls mutually interconnected with adjacent ones. As a result, the seismic performance of buildings in an aggregate configuration can be affected by the mutual interaction between the adjacent units. This interaction, often called the aggregate effect, could significantly influence the level of the seismic vulnerability of URM buildings in aggregate configuration toward in-plane and out-of-plane mechanisms, the latter being the object of the present paper. Traditional methods for assessing the seismic vulnerability of URM buildings neglect the interactions between adjacent buildings, potentially underestimating the actual vulnerability. This study aims to derive fragility curves specific for UMR buildings in aggregate configuration and proposes an innovative methodology that introduces the aggregate effect into an analytical approach, previously developed by the authors for isolated URM buildings. The aggregate effect is modeled by accounting for the friction forces arising among adjacent facades during the development of out-of-plane overturning mechanisms by considering different scenarios, based on how façade walls interact with neighboring structures (e.g., whether they are connected to transverse and/or lateral coplanar ones). The proposed approach is applied to a real case study of an Italian historical center. The obtained results demonstrate that the aggregate effect significantly influences the fragility curves of URM buildings arranged in aggregate configurations. This highlights the importance of considering this effect and the usefulness of the proposed approach for large-scale assessments of seismic vulnerability in historic urban areas, contributing to sustainable disaster risk prevention.

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Section: Introductionmentioning

confidence: 99%

The Influence of the Aggregate Configuration on the Seismic Assessment of Unreinforced Masonry Buildings in Historic Urban Areas

Cima,

Tomei,

Grande

et al. 2024

Sustainability

View full text Add to dashboard Cite

show abstract

Seismic risk and vulnerability models considering typical urban building portfolios

2024

Bull Earthquake Eng

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Seismic Fragility Assessment of Inner Peripheries of Italy through Digital Crowd-Sourcing Technologies

et al. 2023

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The structural and seismic fragility assessment of minor historical centers of the Inner Peripheries of Italy is a key phase of the preservation process of the historical and cultural features of a portion of the Italian building stock, whose reuse is crucial for the reversal of shrinking trends and the stimulation of population growth. In this framework, the opportunities offered by digital crowd-sourcing technologies with respect to performing probabilistic structural safety assessment at a large scale are investigated herein. The objective of this research was to exploit data and information available on the web such that the key building features of an area of interest are collected through virtual inspections, historical databases, maps, urban plans, etc. Thus, homogeneous clusters of buildings identified in the area of interest are catalogued and associated with specific building classes (chosen among those available in the literature), and the buildings’ levels of seismic fragility are determined through the development of fragility curves. The research outcomes show that the proposed approach provides a satisfactory initial screening of the seismic fragility level of an area, thus allowing for the identification of priority zones that require further investigations or structural interventions to mitigate seismic risk.

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Predictive hybrid fragility models for urban scale seismic assessment: a case study in Basilicata Region (Italy)

Cited by 3 publications

References 34 publications

The Influence of the Aggregate Configuration on the Seismic Assessment of Unreinforced Masonry Buildings in Historic Urban Areas

The Influence of the Aggregate Configuration on the Seismic Assessment of Unreinforced Masonry Buildings in Historic Urban Areas

Seismic risk and vulnerability models considering typical urban building portfolios

Seismic Fragility Assessment of Inner Peripheries of Italy through Digital Crowd-Sourcing Technologies

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