Damage assessment of modern masonry buildings after the L’Aquila earthquake

Calderoni, Bruno; Cordasco, Emilia Angela; Zoppo, Marta Del; Prota, Andrea

doi:10.1007/s10518-020-00784-5

Cited by 26 publications

(16 citation statements)

References 14 publications

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“…), and (iii) seismic behaviour and damages observed in post-earthquake situations. Together, these three factors contribute to define the overall seismic behaviour, considered the real discriminant that allows the subdivision in typological classes (Calderoni et al 2020;Sandoli and Calderoni 2021).…”

Section: Research Significancementioning

confidence: 99%

“…As a consequence, their structural behaviour under seismic actions can be also significantly different to each other. Despite these differences, a fairly close correlation among the age of construction, structural typology and observed seismic behaviour and damaging after earthquakes exists Calderoni et al 2020;Sandoli and Calderoni 2021). They represent the key factors for defining the classification and together contribute to define…”

Section: Expert-judgment Contributionmentioning

confidence: 99%

“…Part of such activities are documented in specific scientific papers, e.g. Calderoni et al (2011, De Martino et al (2017) and Calderoni et al (2020).…”

Section: Structural Typologymentioning

confidence: 99%

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Fragility curves for Italian URM buildings based on a hybrid method

Sandoli

Lignola

Calderoni

et al. 2021

Bull Earthquake Eng

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A hybrid seismic fragility model for territorial-scale seismic vulnerability assessment of masonry buildings is developed and presented in this paper. The method combines expert-judgment and mechanical approaches to derive typological fragility curves for Italian residential masonry building stock. The first classifies Italian masonry buildings in five different typological classes as function of age of construction, structural typology, and seismic behaviour and damaging of buildings observed following the most severe earthquakes occurred in Italy. The second, based on numerical analyses results conducted on building prototypes, provides all the parameters necessary for developing fragility functions. Peak-Ground Acceleration (PGA) at Ultimate Limit State attainable by each building’s class has been chosen as an Intensity Measure to represent fragility curves: three types of curve have been developed, each referred to mean, maximum and minimum value of PGAs defined for each building class. To represent the expected damage scenario for increasing earthquake intensities, a correlation between PGAs and Mercalli-Cancani-Sieber macroseismic intensity scale has been used and the corresponding fragility curves developed. Results show that the proposed building’s classes are representative of the Italian masonry building stock and that fragility curves are effective for predicting both seismic vulnerability and expected damage scenarios for seismic-prone areas. Finally, the fragility curves have been compared with empirical curves obtained through a macroseismic approach on Italian masonry buildings available in literature, underlining the differences between the methods.

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Section: Research Significancementioning

confidence: 99%

Section: Expert-judgment Contributionmentioning

confidence: 99%

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Fragility curves for Italian URM buildings based on a hybrid method

Sandoli

Lignola

Calderoni

et al. 2021

Bull Earthquake Eng

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show abstract

“…It arises on a close correlation among i) age of construction (in turn related to the evolution of the seismic Codes over the years), ii) structural characteristics of the buildings (i.e., material types, horizontal and vertical structures, seismic devices, etc., and iii) seismic behaviour and damaging observed in post-earthquake situations. Together, these three factors contribute to de ne the overall seismic behaviour, considered the real discriminant that allows the subdivision in typological classes (Calderoni et al 2020…”

Section: Research Signi Cancementioning

confidence: 99%

Fragility Curves for Italian Urm Buildings Based on a Hybrid Method

Sandoli

Lignola

Calderoni

et al. 2021

Preprint

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A hybrid seismic fragility model for territorial-scale seismic vulnerability assessment of masonry buildings is developed and presented in this paper. The method combines expert-judgment and mechanical approaches to derive typological fragility curves for Italian residential masonry building stock. The first classifies Italian masonry buildings in five different typological classes as function of age of construction, structural typology, and seismic behaviour and damaging of buildings observed following the most severe earthquakes occurred in Italy. The second, based on numerical analyses results conducted on building prototypes, provides all the parameters necessary for developing fragility functions.Peak-Ground Acceleration (PGA) at Ultimate Limit State attainable by each building’s class has been chosen as an Intensity Measure (IM) to represent fragility curves: three types of curve have been developed, each referred to mean, maximum and minim value of PGAs defined for each buildings class.To represent the expected damage scenario for increasing earthquake intensities, a correlation between PGAs and Mercalli-Cancani-Sieber (MCS) macroseismic intensity scale has been used and the corresponding fragility curves developed.Results show that the proposed building’s classes are representative of the Italian masonry building stock and that fragility curves are effective for predicting both seismic vulnerability and expected damage scenarios for seismic-prone areas. Finally, the fragility curves have been compared with empirical curves obtained through a macroseismic approach on Italian masonry buildings available in literature, underlining the differences between the methods.

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“…Existing masonry buildings in seismic areas are particularly vulnerable to heavy damage due to the reduced in-plane shear capacity of piers [1]. This problem is even more evident in the case of poor quality masonry walls with a lack of transverse connections or with an irregular texture (i.e.…”

Section: Introductionmentioning

confidence: 99%

Diagonal compression testing of masonry panels with irregular texture strengthened with inorganic composites

et al. 2020

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Inorganic composites for enhancing the in-plane shear capacity of masonry walls with irregular texture were investigated on twenty-one panels under diagonal compression tests. Three specimens were used as control and twelve specimens were strengthened with two Fibre Reinforced Mortars (FRM-A and FRM-B), characterized by a different content of fibres embedded in the lime-based matrix. The remaining six specimens were strengthened with Fabric Reinforced Cementitious Mortars (FRCM), consisting in a GFRP grid embedded in a fibre reinforced matrix (the same used for FRM-A). The influence of single-side and double-side strengthening configurations on the capacity of strengthened panels was also investigated, to point out the reduction in strengthening effectiveness in case of single-sided applications. The results showed that all the inorganic composites adopted for the strengthening techniques provided a substantial increase of shear capacity. The grid in FRCM strengthened panels played an important role in both strength and deformation capacity at peak. The different fibres content (lower than 50% in weight) in FRM systems slightly affected the overall performance of panels. Finally, analytical predictions of experimental results were reported and discussed and a preliminary analytical model for estimating the FRM shear contribution was proposed, obtaining a good agreement with test results.

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Damage assessment of modern masonry buildings after the L’Aquila earthquake

Cited by 26 publications

References 14 publications

Fragility curves for Italian URM buildings based on a hybrid method

Fragility curves for Italian URM buildings based on a hybrid method

Fragility Curves for Italian Urm Buildings Based on a Hybrid Method

Diagonal compression testing of masonry panels with irregular texture strengthened with inorganic composites

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