Comparative Seismic Risk Assessment of Basilica-type Churches

Betti, Michele; Borghini, Andrea; Boschi, Sonia; Ciavattone, Alberto; Vignoli, Andrea

doi:10.1080/13632469.2017.1309602

Cited by 35 publications

(19 citation statements)

References 33 publications

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“…In general, it is possible to observe that the first mode associated with not negligible participating mass is a transversal mode, namely the first out-of-plane mode of the longitudinal walls of the main nave. Dispersion of vibration modes for such typology of structures has been already observed by other authors [40,41,42] and this can be considered a specific structural characteristic of these structures, in contrast with ordinary or modern buildings where the modal participating mass is generally greater than 70% and the first three modes give a cumulative mass generally greater than 85%. In addition, the results shown by the modal analyses are in agreement with the observation of the systematic analysis of the damage suffered by the churches after major earthquakes, that highlight that the church seismic behavior is predominantly ruled by the activation of local collapse mechanisms on several macro-elements [41,43,44,45,46].…”

Section: Calibration Of the Mechanical Propertiessupporting

confidence: 58%

Seismic Behavior Assessment of a Brazilian Heritage Construction

Brandão

Diógenes

Fernandes³

et al. 2018

Frattura Ed Integrità Strutturale

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Preservation of historical constructions, and passing it on to future generations, is a major issue in modern societies. Earthquakes are one of the major causes of damages to heritage buildings across the world. The city of Sobral (Ceará State, Brazil) keeps in its historic center a large number of heritage buildings and, since 2008, an intense seismic activity has been observed. This study aims to contribute to the preservation of the Sobral heritage constructions against seismic loads through the assessment of the seismic behavior of one representative building: the Nossa Senhora das Dores Church, a 19 th century historical construction. First, a 3D finite element (FE) model was built and tuned according to the results of dynamic tests performed under environmental loads. Next, the FE model was employed to assess the seismic behavior of the church by performing linear time-history analyses employing two real earthquakes. The results showed big displacements and high stresses in many parts of the church, allowing to identify the most critical and most susceptible to damage areas (based on the seismic scenarios considered). These results can be considered as a support for seismic retrofitting measures to be adopted on Sobral heritage constructions.

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Section: Calibration Of the Mechanical Propertiessupporting

confidence: 58%

Seismic Behavior Assessment of a Brazilian Heritage Construction

Brandão

Diógenes

Fernandes³

et al. 2018

Frattura Ed Integrità Strutturale

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“…), evaluating possible interactions with adjacent elements. Applications of this approach may be found, among the others, in Betti et al (2018), Brandonisio et al (2013), D'Ayala and Paganoni (2011), Doglioni et al (1994), Formisano and Marzo (2017), Lagomarsino and Podestà (2004a,b), while a recent investigation on the estimation of main frequency of ancient masonry churches may be found in Lopez et al (2019).…”

Section: Seismic Assessment Methods Indicated In the Italian Directivementioning

confidence: 94%

“…In addition, the use of non-linear methods, such as the conventional pushover approach, implies the decisive choice of the control point on which the non-linear global response and the evaluation of the seismic performance depend. A discussion of this aspect may be found, among others, in Betti et al (2018). While a general discussion on the application of non-linear analyses and the comparisons with the macro-element approach may be found in Castellazzi et al (2013) and Valente and Milani (2018b).…”

Section: Seismic Assessment Methods Indicated In the Italian Directivementioning

confidence: 99%

Comparative Seismic Assessment of Ancient Masonry Churches

D’Amato

Gigliotti

Laguardia

2019

Front. Built Environ.

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The seismic risk assessment of the historical and architectural heritage is, nowadays, a very relevant topic due the potential human and economic losses involved in case of global or partial collapse. In order to preserve the inestimable value of such heritage, the prevention and mitigation of the seismic risk is needed and it cannot be postponed. Among the several methods available in the literature to perform vulnerability assessment on cultural heritage, this study focuses on two simplified methods proposed by the current Italian Directive, containing the guide lines for assessment and reduction of cultural heritage seismic risk. Furthermore, a new simplified method is applied, capable at a territorial scale of quickly ranking the seismic behavior of ancient churches. In the paper, the considered evaluation methods are applied to the case study of the Matera Cathedral, named SS. Maria della Bruna. The obtained results are then compared with others of similar ancient churches, all belonging to the historical centre "Sassi of Matera," a site protected by UNESCO having a moderate seismic hazard.

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“…The relevance of assessing the vulnerability of cultural heritage against earthquakes has become an essential pre-requisite for constant safety of city centers, considering the massive presence of peculiar existing structures in the European area (Roca et al 2013;Betti et al 2018;Valente and Milani 2018). Churches are expressly widespread in Italy, particularly in high-seismicity regions, and they are characterized by complex geometries, irregularities, and highly heterogeneous materials, all features that make them much vulnerable during a seismic event.…”

Section: Introductionmentioning

confidence: 99%

Damage assessment of ancient masonry churches stroked by the Central Italy earthquakes of 2016 by the non-smooth contact dynamics method

Clementi

Ferrante

Giordano

et al. 2019

Bull Earthquake Eng

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The non-smooth contact dynamics method was selected to investigate the damage occurred to typical masonry churches (namely Apennine churches) belonging to Central Italy areas affected by the seismic activity started in 2016. The investigated buildings show discontin-uous dynamics since the optioned method gave the chance to properly model the temples as multi rigid body systems using the Signorini's impenetrability condition and the dry-friction Coulomb's law, achieving a thoughtful response to ground seismic solicitations. The results provided by the assessment grant an overview of the most common damages and failure mechanisms, giving the guidelines to restoration projects that fully respond to structural needs.

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Comparative Seismic Risk Assessment of Basilica-type Churches

Cited by 35 publications

References 33 publications

Seismic Behavior Assessment of a Brazilian Heritage Construction

Seismic Behavior Assessment of a Brazilian Heritage Construction

Comparative Seismic Assessment of Ancient Masonry Churches

Damage assessment of ancient masonry churches stroked by the Central Italy earthquakes of 2016 by the non-smooth contact dynamics method

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