An energy-based strategy to find admissible thrust networks compatible with foundation settlements in masonry structures

Avelino, Ricardo Maia; Iannuzzo, Antonino; Mele, Tom Van; Block, Philippe

doi:10.1016/j.mechrescom.2022.103978

Cited by 6 publications

(2 citation statements)

References 46 publications

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“…Force-based methods are commonly adopted for the assessment of the safety of vaults and domes, as in the case of the Thrust Network Analysis (TNA) [14,15,16,17], based on the equilibrium of a network of forces as in a three-dimensional space frame structure. TNA has been extended to finite dimension blocks in [18].…”

Section: Introductionmentioning

confidence: 99%

Application of the Continuous Airy-Based for Stress Singularities (Cass) to the Load Bearing Capacity of Masonry Structures Under Seismic Loads

Montanino,

Perelli,

De Gregorio

et al. 2023

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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The study of the behaviour of masonry structure is of large relevance for the preservation of architectural heritage, especially in areas subjected to seismic actions.This contribution provides a methodology for the evaluation of the maximum sustainable pseudo-static horizontal load, representative of a seismic action, under the framework of the Static Theorem of Limit Analysis. In particular, we adopt the Continuous Airy-based for Stress Singularities (CASS) method, consisting in the discretization of a domain in plate-type finite elements, for the identification of admissible stress fields in equilibrium with given external and internal loads, under the Heyman hypotheses of a normal, rigid, no tension material. In particular, the limit horizontal force is the maximum load for which an equilibrated solution still exists.The considered application show the effectiveness of the method in dealing with the proposed problem, and is the base for the development of fragility curves for seismic curves at different local scales. 2492COMPDYN 2023 9 th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering M. Papadrakakis, M. Fragiadakis (eds.

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Section: Introductionmentioning

confidence: 99%

Application of the Continuous Airy-Based for Stress Singularities (Cass) to the Load Bearing Capacity of Masonry Structures Under Seismic Loads

Montanino,

Perelli,

De Gregorio

et al. 2023

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…The knowledge of the bradyseismic phenomenon in the Campi Flegrei area and its impact on the built stock is important for the (very dense) population safety. Extensive literature deals with the analytic study of the effects of soil motion on building behavior, especially for masonry structures, from a kinematic (Iannuzzo et al, 2018;Iannuzzo et al, 2021;Liguori et al, 2022;Maia Avelino et al, 2022;Perelli et al, 2023a) and static (Cusano et al, 2021;Montanino et al, 2022) standpoint.…”

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confidence: 99%

Impact assessment caused by bradyseism phenomena in the Campi Flegrei area

Perelli,

Di Maio,

De Gregorio

et al. 2023

Front. Built Environ.

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Campi Flegrei (Italy) is among the areas with the greatest volcanic explosive risk in the world due to the dangerousness of the expected hazards, the high exposed value (about 500,000 people will be evacuated during the “alarm phase”), and the vulnerability of the urban settlements under the effect of the volcanic phenomena. The last two dramatic bradyseism phases occurred in 1969–1972 and 1982–1984 when Pozzuoli town was affected by rapid ground inflation, which brought an overall higher level of about 3.5 m and caused numerous earthquakes (M ≤ 4.2), with severe damage to buildings. During 1984, the seismicity was intense, with 33 events with 0.5 < M ≤ 3 and six with 3 < M ≤ 3.8. Subsequently, the Campi Flegrei caldera was characterized by general subsidence for about 20 years until 2005, when a new inflation period started and is still ongoing (∼1 m). The areal distribution of the recent uplift is characterized by the maximum vertical displacement in the town of Pozzuoli, with a radial decrease from the caldera center outwards. The need to better understand Campi Flegrei volcanic activity is fundamental to protecting the population from hazards linked to explosive volcanic eruptions and understanding the role of seismicity as a possible precursor of a potential eruption. In this perspective, as part of the activities of the PLINIVS Study Centre (Centre of Competence of Italian Civil Protection Department for Volcanic Risk), the authors developed a procedure, implemented in a web application, that relates the monitoring of the ground deformation with the behavior of buildings to evaluate the level of progressive damage to the ordinary Phlegraean buildings due to bradyseism in near real time. This study describes the models adopted for the three impact/risk factors (hazard, exposure, and vulnerability) used to estimate building damage.

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