First Results of the Vibration-Based Structural Health Monitoring of a Masonry Dome

Cavalagli, Nicola; Comanducci, Gabriele; Gioffré, Massimiliano; Gusella, Vittorio; Ubertini, Filippo

doi:10.7712/100016.2185.11937

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…The OMA is one of the most utilized techniques used to identify the unknown modal parameters of a -modern [9], [10] or historical [11], [12]-building from the monitoring output-only analysis [13]- [16]. This technique was already used in vaulted structures [17]- [20]. For this reason, it was decided to use it for the identification of the small-scale physical model.…”

Section: Introductionmentioning

confidence: 99%

Characterization and dynamic behaviour of Masonry Newly Concept Vault realized by 3d Printer

Sabbà,

Rizzo,

Giannoccaro

et al. 2024

J. Phys.: Conf. Ser.

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Masonry vaults represent one of the most recurrent types of horizontal structural elements in architecture in European countries, even in areas characterized by a high level of seismic risk. Therefore, their structural evaluation remains of primary importance. This paper proposes to apply already consolidated structural analysis methodologies on a contemporary vaulted space; in particular, on a small-scaled vault model. The aim, therefore, is to investigate the behaviour of a newly concept vault generated starting from the “Flat vault of Abeille” patented in 1699 starting by a scaled model made by 3D printer. The identification of this “new type” of vault is essential to design it correctly and to optimize the geometry for structural purposes. So, the dynamic identification of 1:8 small-scale vault model in 3D printing was studied. All the vault blocks were made in Polylactic Acid (PLA), have an infill of 70% and are assembled with dry joints. The paper describes the process to acquire the environmental and forced vibrations and to analyse them with the Operational Modal Analysis (OMA), identifying the natural frequencies and the mode shapes. Subsequently the results were compared with those of numerical distinct element method (DEM).

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Section: Introductionmentioning

confidence: 99%

Characterization and dynamic behaviour of Masonry Newly Concept Vault realized by 3d Printer

Sabbà,

Rizzo,

Giannoccaro

et al. 2024

J. Phys.: Conf. Ser.

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“…The dynamic monitoring system consists of five high-sensitivity (10V/g) uni-axial accelerometers installed at the base of the drum and at the base of the dome, as illustrated in Figure 2 [13]. In particular, the sensors A1, A2 and A3 have been placed on the easily accessible external side of the drum base, while the sensors A4 and A5 in the highest accessible location inside the dome structure, at the top of the drum, in the space of the internal staircases ( Figure 2).…”

Section: Dynamic Investigationsmentioning

confidence: 99%

Dynamic Monitoring and Nonlinear Analysis of the Dome of the Basilica of S.MARIA Degli Angeli in Assisi

Cavalagli¹,

Botticelli²,

Gioffré³

et al. 2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Abstract. During the last years, the application of Structural Health Monitoring (SHM) systems to heritage constructions has received a great interest due to the low invasiveness and low-cost of the necessary equipment. When applied to monumental structures and, more in general, to cultural heritage ones, such SHM systems represent an effective solution for preventive conservation against both material degradation and damages derived by natural hazards, such as earthquakes. Among the various technical solutions currently available for SHM, vibration-based systems deserve a special attention, but their application in the context of historical constructions is still quite rare and challenging, with very few documented applications, mostly limiting to masonry towers and bell-towers for their slenderness properties.In this work, the first months of continuous vibration monitoring of the dome of the Basilica of Santa Maria degli Angeli in Assisi are presented. At first, a dynamic identification has been carried out using five high-sensitivity accelerometers, three of them installed at the base of the drum and two at the base of the dome. Then, a fully automated identification technique has been used to extract time series of natural frequencies during the monitoring period. Moreover, some statistical tools have been applied in order to select the best configuration, in terms of number and position of sensors, necessary to obtain a continuous frequency tracking of the first natural modes in view of the use of this information for rapid post-earthquake structural assessment.Moreover, a preliminary investigation about the seismic assessment has been carried by means of a Finite Element (FE) nonlinear dynamic analysis. The damage map obtained by the numerical simulation has been compared with the actual crack scenario present on the structure, giving further information about the structural dynamic response.

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First Results of the Vibration-Based Structural Health Monitoring of a Masonry Dome

Cited by 2 publications

References 18 publications

Characterization and dynamic behaviour of Masonry Newly Concept Vault realized by 3d Printer

Characterization and dynamic behaviour of Masonry Newly Concept Vault realized by 3d Printer

Dynamic Monitoring and Nonlinear Analysis of the Dome of the Basilica of S.MARIA Degli Angeli in Assisi

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