Comparative Study on Two Analytical Mechanical-Based Methods for Deriving Fragility Curves Targeted to Masonry School Buildings

Cattari, Serena; Alfano, Sara; Ottonelli, Daria; Saler, Elisa; Porto, Francesca da

doi:10.7712/120121.8703.19294

Cited by 6 publications

(7 citation statements)

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“…An interesting overview and discussion on the analogies and differences among different approaches, i.e., if empirical, mechanical-analytical, mechanical-numerical, or hybrid, is provided in [88,89], while in [90], a focus on analytical methodologies to derive vulnerability functions is presented. Among the mechanical-analytical approaches, some proposals specifically developed for RC structures are presented in [91][92][93][94], while those specifically for URM are developed in the works by [73,[95][96][97][98]. However, the limited number of buildings that compose the SLC MIN system, at least compared with the interfering buildings, makes it feasible to also apply mechanicalanalytical approaches, which are based on a limited number of geometrical and mechanical parameters.…”

Section: Risk Class From Si (Ls Ls) Risk Class From Ealmentioning

confidence: 99%

Section: Risk Class From Si (Ls Ls) Risk Class From Ealmentioning

confidence: 99%

“…In this work, by way of example, and given the availability of more detailed data from the archive, the mechanical-analytical Displacement-Based Vulnerability (DBV)-masonry method [73,98] was deployed for masonry buildings. The DBV-masonry method primarily refers to the global in-plane response of URM structures, starting from the shear-type idealization and evaluating the total base shear by assuming that all masonry piers fail simultaneously.…”

Section: Risk Class From Si (Ls Ls) Risk Class From Ealmentioning

confidence: 99%

“…In order to evaluate these variables, it is necessary to define a small number of mechanical and geometrical parameters, assume a basic modal shape, and assign specific correction factors that are intended to account for the impacts of a wide variety of constructive and morphological details (such as the presence of tie-rods, ring beams, etc.). The fundamental steps for using such a mechanical model are as follows: (1) analyzing the data that are available from archives or site surveys, (2) defining all necessary parameters and factors in two directions (X and Y), (3) assessing the capacity curves, (4) defining the seismic demand by an Acceleration-Displacement Response Spectrum (ADRS), and (5) evaluating the value PGA LS of the PGA that generates any LS threshold using overdamped spectra [98]. In that way, the EAL may be computed as well.…”

Section: Risk Class From Si (Ls Ls) Risk Class From Ealmentioning

confidence: 99%

“…In that way, the EAL may be computed as well. A more detailed description of this method is out of the scope of this paper; thus, interested readers are invited to refer to [73,89,98].…”

Section: Risk Class From Si (Ls Ls) Risk Class From Ealmentioning

confidence: 99%

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EQ-DIRECTION Procedure towards an Improved Urban Seismic Resilience: Application to the Pilot Case Study of Sanremo Municipality

Cattari,

Ottonelli,

Mohammadi

2024

Sustainability

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This paper discusses the critical importance of effective mitigation policies to enhance earthquake resilience in urban systems, especially in light of recent seismic events in Italy. The Italian Civil Protection Department (ICPD) has delineated specific Limit Conditions (LCs) for urban settlements, serving as benchmarks for targeted mitigation policies, and akin to Limit States for buildings in Codes. While the ICPD has already developed operational procedures for some LCs, concentrating on evaluating the structural operational efficiency of strategic functions during emergency management, only a conceptual outline exists for other LCs involving preparedness and recovery/reconstruction phases. To address this gap, this paper introduces the EQ-DIRECTION (EarthQuake Disaster-REsilient City acTIOn plan) procedure. This method aims to analyze and assess the “Limit Condition for Safeguarding the Existence of the Settlement” (referred to as SLC). The procedure entails identifying the “minimum urban system” required for effective recovery and evaluating the performance of this system in terms of structural damage and economic losses against the SLC requirement. The practical application of this methodology to a real-world case study in Sanremo municipality on the western coast of Liguria (Italy) demonstrates the feasibility and potential effectiveness of the procedure for earthquake resilience in urban planning and management.

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Section: Risk Class From Si (Ls Ls) Risk Class From Ealmentioning

confidence: 99%

Section: Risk Class From Si (Ls Ls) Risk Class From Ealmentioning

confidence: 99%

Section: Risk Class From Si (Ls Ls) Risk Class From Ealmentioning

confidence: 99%

Section: Risk Class From Si (Ls Ls) Risk Class From Ealmentioning

confidence: 99%

“…In that way, the EAL may be computed as well. A more detailed description of this method is out of the scope of this paper; thus, interested readers are invited to refer to [73,89,98].…”

Section: Risk Class From Si (Ls Ls) Risk Class From Ealmentioning

confidence: 99%

See 3 more Smart Citations

EQ-DIRECTION Procedure towards an Improved Urban Seismic Resilience: Application to the Pilot Case Study of Sanremo Municipality

Cattari,

Ottonelli,

Mohammadi

2024

Sustainability

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National risk assessment of Italian school buildings: The MARS project experience

Cattari,

Alfano,

Manfredi

et al. 2024

International Journal of Disaster Risk Reduction

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Development of mechanics-based fragility curves for the Italian masonry school asset

Saler,

Follador,

Carpanese

et al. 2024

Earthquake Spectra

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This article presents the derivation of a fragility model for the Italian masonry school building asset, comprising 265 sets of fragility curves for as many building types, classified on the basis of few parameters: construction age, number of stories, plan area, and type of masonry (i.e. with regular or irregular pattern). The fragility assessment was carried out by means of parametric analyses, generating more than 7500 samples which were then analyzed through the mechanics-based procedure Vulnus. Sample fragilities were then linearly combined to obtain fragility curves consistent with the adopted taxonomy based on few parameters. A macroseismic–heuristic model from the literature was used to extend the fragility model to five damage states, according to the European Macroseismic Scale (EMS98). The proposed model was compared to empirical information in terms of observed damage on three existing schools and fragility curves recently derived by processing data of school damaged by the 2009 L’Aquila earthquake, showing a satisfactory agreement. In addition, a comparison with fragility sets for residential buildings was carried out. Both fragility models were developed with the same procedure, so as to point out differences between schools and ordinary buildings. Similar fragilities were observed for schools and residential buildings built before 1945, whereas for later periods, schools showed a higher fragility than the residential asset. Finally, seismic damage maps were developed at national scale showing the distribution of expected damage as a possible application of the derived model.

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Comparative Study on Two Analytical Mechanical-Based Methods for Deriving Fragility Curves Targeted to Masonry School Buildings

Cited by 6 publications

References 0 publications

EQ-DIRECTION Procedure towards an Improved Urban Seismic Resilience: Application to the Pilot Case Study of Sanremo Municipality

EQ-DIRECTION Procedure towards an Improved Urban Seismic Resilience: Application to the Pilot Case Study of Sanremo Municipality

National risk assessment of Italian school buildings: The MARS project experience

Development of mechanics-based fragility curves for the Italian masonry school asset

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