Seismic fragility assessment of masonry aggregates with identical structural units in row

Battaglia, Lidia; Buratti, Nicola; Savoia, Marco

doi:10.1201/9781003098508-129

Cited by 2 publications

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“…The analyses with a triangular load pattern are not shown here, as a set of preliminary analyses led to less conservative results (i.e. higher capacity) that the uniform load pattern, refer to 31 . Since according to the Italian code, 30 the LS limit state is reached when the maximum total shear of the model is reduced by 20% from the maximum value, the last points of the push‐over curves are referred to this loss.…”

Section: Non‐linear Static Analysesmentioning

confidence: 99%

“…If the attainment of the LS limit state is considered as the limit for the analysis of the whole aggregate structure, not all the masonry walls of the structural units have reached the failure for shear. Therefore, according to Battaglia et al., 31 the analysis over the attainment of the LS limit state was performed to allow each structural unit to reach the failure for shear and to get a kind of vulnerability classification of the structural units that first attain the collapse for shear.…”

Section: Non‐linear Static Analysesmentioning

confidence: 99%

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Seismic fragility assessment of masonry building aggregates: A case study in the old city Centre of Seixal, Portugal

Battaglia

Ferreira

Lourenço

2020

Earthq Engng Struct Dyn

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Aggregates made of old masonry structures represent a very common structural typology in many cities of the world. The structural units along the aggregates are characterized frequently by structural and geometrical heterogeneities. But urban growth led to the formation of many historic centres with similar structural typologies. The present study aims to assess the seismic fragility of masonry building aggregates using the old city centre of Seixal as a case study. The analysis involved the assessment of the most prevalent structural typology in the study area, considering the variability of a set of structural and geometrical parameters. The variation of such parameters has allowed the definition of 36 different structural configurations, whose seismic performance behaviours were studied employing non‐linear static analyses. Based on the analyses, the peak ground accelerations (PGAC) corresponding to the attainment of the life safety limit state were obtained and the fragility curves were plotted. Furthermore, the behaviour of the structural configurations, analysed as isolated structural units, is also compared with their aggregate structural performance. Significant differences in the vulnerability of the buildings when isolated or in the aggregate are obtained, demonstrating that the seismic interactions between adjacent buildings should not be neglected. It was further possible to observe that the variation of the considered parameters significantly affects the seismic response of the building, particularly when the characteristics of the internal slabs are changed.

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Section: Non‐linear Static Analysesmentioning

confidence: 99%

Section: Non‐linear Static Analysesmentioning

confidence: 99%

Seismic fragility assessment of masonry building aggregates: A case study in the old city Centre of Seixal, Portugal

Battaglia

Ferreira

Lourenço

2020

Earthq Engng Struct Dyn

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Seismic behaviour of reinforced-masonry aggregate under different types of interaction between adjacent dwellings

Torres-Olivares,

González-Rodrigo,

Saavedra-Flores

et al. 2023

Bull Earthquake Eng

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Assessing the seismic vulnerability of existing buildings is an essential task for the management of earthquake disasters. For this purpose, the seismic behaviour of buildings is usually determined under the assumption of isolated conditions, although aggregate structures are one of the most common typologies found in urban centres. This study aims to investigate the nonlinear static behaviour of aggregate dwellings consisting of grouted reinforced concrete block configurations commonly observed in San José, Costa Rica. This research investigates the use of several strategies to model connections between adjacent buildings which are typically found in modern building practises in this country. The methodology used here to analyse the seismic behaviour of isolated and row-aggregated dwellings reveals significant differences in their response under seismic loads, especially when acting perpendicular to the aggregate. The study reveals that the type of interaction considered between adjacent buildings has a very important impact on the seismic capacity and failure mechanisms of the aggregated structures. This procedure can also be applied to the vulnerability assessment and retrofit of existing aggregates.

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Seismic fragility assessment of masonry aggregates with identical structural units in row

Cited by 2 publications

References 0 publications

Seismic fragility assessment of masonry building aggregates: A case study in the old city Centre of Seixal, Portugal

Seismic fragility assessment of masonry building aggregates: A case study in the old city Centre of Seixal, Portugal

Seismic behaviour of reinforced-masonry aggregate under different types of interaction between adjacent dwellings

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