Model Updating of Historical Belfries Based on Oma Identification Techniques

Standoli, Gianluca; Giordano, Ersilia; Milani, Gabriele; Clementi, Francesco

doi:10.1080/15583058.2020.1723735

Cited by 76 publications

(32 citation statements)

References 50 publications

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“…Limit analysis has been shown a valuable method to estimate the capacity of masonry structures up to collapse as long as the cracks are effectively described [37][38][39][40][41][42][43][44]. Sophisticated techniques involving dynamic monitoring can reveal the actual state of a traditional masonry structures and points with possible weaknesses [45][46][47][48][49][50][51][52][53][54][55]. Furthermore, building information modelling can be helpful in the investigation of the architectural properties of monumental structures [56].…”

Section: Introductionmentioning

confidence: 99%

Assessment and Fragility of Byzantine Unreinforced Masonry Towers

Kouris

Konstantinidis

et al. 2021

Infrastructures

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The seismic response of five cultural heritage towers erected between the 9th and 10th century AD are investigated herein. Firstly, their architectural and modal characteristics were studied in the light of seismic events that hit the monuments. There exist several historical reports of strong earthquakes, as well as damaged structures and collapses. The limit analysis is adopted to examine the post-elastic behavior of the towers up to collapse due to out-of-plane failure. Recurrent damage modes were collected from recent earthquakes and a classification of four possible collapse mechanisms in towers and slender masonry structures is here proposed: overturning, separation of perpendicular walls, diagonal cracking, and dislocation of the belfry. A thorough examination of the towers under investigation verified the proposed damage classification. The capacity curves were derived combining the capacity curves of each of the collapse mechanisms. Damage thresholds were defined on these curves in correspondence with damage states. The studied group of structures is representative of a wider typology. A statistical approach was adopted to describe damage with seismic intensity, and vulnerability curves were generated. The results of this study will improve the understanding of the performance and the collapse mechanisms of slender masonry structures under seismic loading and provide a characterization of seismic vulnerability for the studied cultural heritage types of towers.

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Section: Introductionmentioning

confidence: 99%

Assessment and Fragility of Byzantine Unreinforced Masonry Towers

Kouris

Konstantinidis

et al. 2021

Infrastructures

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“…In the paper by Standoli et al (2020), the seismic vulnerability of masonry bell-towers, conditioned by the degrading state and high slenderness, is pointed out. Four different case studies, represented by isolated towers in the province of Ferrara (Italy), were investigated.…”

Section: Structural Health Monitoring Of Architectural Heritage: From the Past To The Future Advancesmentioning

confidence: 99%

Structural Health Monitoring of Architectural Heritage: From the past to the Future Advances

Clementi

Formisano

Ubertini

2021

International Journal of Architectural Heritage

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“…Several methods have been validated in the literature for earthquake-induced damage identification, aimed at the preventive conservation of historic masonry buildings. Among them, vibration-based structural health monitoring (SHM) methods resorting to modal parameters as damage-sensitive features and based on unsupervised learning techniques are eminently efficient for early-stage damage detection (Bennati et al 2005;Ivorra and Pallarés 2006;Alvandi and Cremona 2006;Brencich and Sabia 2008;Ramos et al 2010;Spina et al 2011;Ditommaso et al 2012;Brando et al 2015;Gentile et al 2016;Dolce et al 2017;Masciotta et al 2017;Clementi et al 2017;Saisi et al 2018;Kita et al 2019;Formisano et al 2020;García-Macías et al 2020a;Giordano et al 2020a, b;Bianconi et al 2020;Standoli et al 2021). Unfortunately, their main drawback is that they are limited to detection only, even though (Saisi et al 2015;Ubertini et al 2018;Venanzi et al 2020) providing a first clue on damage quantification, e.g.…”

Section: Introductionmentioning

confidence: 99%

A new method for earthquake-induced damage identification in historic masonry towers combining OMA and IDA

Kita

Cavalagli

Venanzi

et al. 2021

Bull Earthquake Eng

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This paper presents a novel method for rapidly addressing the earthquake-induced damage identification task in historic masonry towers. The proposed method, termed DORI, combines operational modal analysis (OMA), FE modeling, rapid surrogate modeling (SM) and non-linear Incremental dynamic analysis (IDA). While OMA-based Structural Health Monitoring methods using statistical pattern recognition are known to allow the detection of small structural damages due to earthquakes, even far-field ones of moderate intensity, the combination of SM and IDA-based methods for damage localization and quantification is here proposed. The monumental bell tower of the Basilica of San Pietro located in Perugia, Italy, is considered for the validation of the method. While being continuously monitored since 2014, the bell tower experienced the main shocks of the 2016 Central Italy seismic sequence and the on-site vibration-based monitoring system detected changes in global dynamic behavior after the earthquakes. In the paper, experimental vibration data (continuous and seismic records), FE models and surrogate models of the structure are used for post-earthquake damage localization and quantification exploiting an ideal subdivision of the structure into meaningful macroelements. Results of linear and non-linear numerical modeling (SM and IDA, respectively) are successfully combined to this aim and the continuous exchange of information between the physical reality (monitoring data) and the virtual models (FE models and surrogate models) effectively enforces the Digital Twin paradigm. The earthquake-induced damage identified by both data-driven and model-based strategies is finally confirmed by in-situ visual inspections.

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Model Updating of Historical Belfries Based on Oma Identification Techniques

Cited by 76 publications

References 50 publications

Assessment and Fragility of Byzantine Unreinforced Masonry Towers

Assessment and Fragility of Byzantine Unreinforced Masonry Towers

Structural Health Monitoring of Architectural Heritage: From the past to the Future Advances

A new method for earthquake-induced damage identification in historic masonry towers combining OMA and IDA

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