Dissertations / Theses on the topic 'Danno strutturale'
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DI, BATTISTA LUCA. "Indicatori di danno subspace-based: dai test di rilevamento danni all'analisi di affidabilità strutturale." Doctoral thesis, Università degli Studi dell'Aquila, 2021. http://hdl.handle.net/11697/170119.
Full textGARGARO, Danilo. "Analisi modale output-only e monitoraggio strutturale per la caratterizzazione dinamica di componenti strutturali e non strutturali in complessi ospedalieri." Doctoral thesis, Università degli studi del Molise, 2018. http://hdl.handle.net/11695/84857.
Full textRecent earthquakes occurred in Italy and throughout the world have remarked the critical role of health facilities for post-earthquake emergency management. Due to earthquake, several hospitals (L’Aquila 2009, Amatrice 2016) have lost their functionality because of damage to structural as well as non-structural members, equipment and installations. The primary role of hospitals after hazardous events leads to develop specific analysis and monitoring strategies aimed at assessing their conditions, possibly in real time. As a result of this process, health facilities become “smart” and they can effectively support the mitigation of seismic vulnerability, by acting on preparedness of the medical staff and supporting the management and the maintenance of structural as well as non-structural subsystems over time. Continuous monitoring of health and performance of hospitals can support the formulation of disaster mitigation plans and the definition of investment priorities to ensure the overall safety. In the present thesis, the main monitoring programs focused on post-earthquake damage assessment of health facilities are reviewed, pointing out their limitations in assessing the performance of structural as well as non-structural members, equipment and installations. Some results of an on-going monitoring project for the main hospital in Campobasso (Southern Italy) are presented, afterwards. Attention is focused on the response of the structure in operational conditions and after seismic events. A modal-based damage detection method is proposed. The results of experimental as well as operational modal analysis tests on a drug dispenser are also discussed in order to assess their applicative perspectives for qualification of medical equipment in view of seismic vulnerability assessment of non-structural components. The potentialities of modal based damage detection methods for the assessment of non-structural components are finally assessed by laboratory testing of a steel tank. Ensuring supply of liquids and medical gases after an earthquake is one of the most important tasks to keep the hospital operational. Unanchored tanks are vulnerable to earthquake loadings. This type of tanks is frequently encountered in existing hospitals. Rooftop water tanks or diesel fuel tanks for emergency generators are examples of usually unanchored tanks. Their damage can cause explosions and leakage of toxic substances, with the related consequences in terms of pollution and life losses. Due to their configuration, liquid and gas storage tanks apply large forces to the supports, which can collapse causing tank toppling. Thus, some output-only modal identification tests have been carried out to characterize the dynamic response of a vertical atmospheric water tank under different filling ratios and anchoring. The study has provided useful hints for the development of modal based structural health monitoring systems able to diagnose the health state of similar tanks after seismic events.
Contini, Letizia. "Identificazione del danno in strutture reticolari via frequenze di vibrare e Receiver Operating Characteristic (ROC) curve." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Find full textPignagnoli, Giacomo. "Individuazione del danno su ponti in muratura mediante misure dinamiche." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10679/.
Full textQuqa, Said. "Identificazione dinamica modale nel dominio congiunto tempo-frequenza per il monitoraggio delle condizioni strutturali." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
Find full textBaronti, Mattia. "Identificazione e localizzazione del danno in strutture reticolari mediante modi di vibrare e reti neurali artificiali." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Find full textCalidori, Andrea. "Identificazione del danno nelle strutture da dati vibrazionali: proposta di un metodo automatico per la stima della matrice di flessibilità nel dominio delle frequenze." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amslaurea.unibo.it/25030/.
Full textCostantino, Antonio Beniamino. "Correlazione tra i parametri di intensità di un sisma e il danno procurato alle costruzioni: rilievi di campo e studio di una proposta metodologica." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
Find full textLuongo, Vincenzo. "Modelli ARMA per l'identificazione del danno nell'ambito del monitoraggio di strutture civili." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022.
Find full textVerardi, Lucia. "Subsidenza e danni indotti dallo scavo di una galleria urbana." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amslaurea.unibo.it/521/.
Full textSoli, Andrea. "Identificazione di strutture reticolari mediante prove dinamiche e algoritmi genetici." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
Find full textD'Angelo, Matteo. "Interazione tra lo scavo di gallerie e strutture intelaiate: modellazione del comportamento osservato in centrifuga." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
Find full textCazzoli, Simone. "Analisi storica e costruttiva di un aggregato in muratura allo scopo di determinare strumenti utili a prevenire cinematismi di danno. Il caso di un isolato del centro storico di Crevalcore." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5944/.
Full textVenturi, Laura. "La vulnerabilità sismica dei tessuti storici analizzata a partire dalla caratterizzazione costruttiva: un caso di studio nel centro storico di Carpi." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13919/.
Full textFoschini, Lorenzo. "Studio della produzione di provini laminati manualmente per prove di caratterizzazione meccanica." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019.
Find full textCamassa, Domenico. "Approcci innovativi all’identificazione dinamica delle strutture e del danno strutturale per le costruzioni in muratura." Doctoral thesis, 2021. http://hdl.handle.net/11589/226618.
Full textThis work concerns the study and development of innovative approaches to dynamic structural identification and dynamic damage identification for masonry constructions. The architectural heritage, mainly composed of masonry constructions, represents a fundamental part of the cultural heritage of countries; therefore, its preservation is an essential goal for our society and for the scientific community. Anyway, one of the most critical issue is the lack of knowledge on the structural behavior of these constructions. Dynamic testing and dynamic-based structural damage identification techniques could play a major role for overcoming this obstacle. Indeed, the combined use of these techniques makes it possible to get information about the global and the local structural features, essential for calibrating structural models and designing specific and effective conservation interventions. However, these techniques still show some drawbacks which hinder their application to masonry constructions: the traditional experimental setup for dynamic testing of structures is complex and highly demanding; moreover, most dynamic-based damage identification methods are too general and do not take into account the peculiar characteristics of masonry constructions. This thesis proposes original solutions to both problems, through the combination of original theoretical approaches and advanced experimental techniques, applied in an innovative way. As to dynamic testing, the potentials and limitations of the radar interferometry – a highly innovative technique for remotely measuring structural vibrations – were explored. In particular, because of the inability to reconstruct the three-dimensional and spatial characteristics of mode shapes of structures by using a single radar interferometer, theoretical models and expeditious experimental approaches involving the simultaneous use of two radar interferometers were developed. As to dynamic-based structural damage identification techniques, due to the fundamental role played by arches in masonry constructions, an ad hoc natural frequency-based approach for the localization and quantification of multiple damages in masonry arches was proposed. This approach has been developed considering the main structural features of blocky masonry arches and the most relevant damage phenomena possible for this type of structures. All of the proposed approaches have been validated through laboratory and in situ experimental tests.
ZUCCONI, MARIA. "Vulnerabilità Urbana e Mappe di Rischio per la Prevenzione Sismica e la Gestione dell'Emergenza." Doctoral thesis, 2014. http://hdl.handle.net/11573/918251.
Full textLOFRANO, EGIDIO. "Analisi dinamica diretta e inversa di strutture danneggiate a parametri incerti." Doctoral thesis, 2015. http://hdl.handle.net/11573/765765.
Full textThe thesis presents a perturbative approach for dynamic identification of structures with uncertain parameters. The proposed method, based on the minimization of an objective function, is independent of the achieved order approximation and, inheriting the advantages of the perturbation approach, ensures a low computational effort. To overcome the difficulties related to the selection of the physical model for damage like uncertain parameters, it is proposed a method that uses the orthogonal version of the empirical mode decomposition, and seeks to combine the modal properties of the structure with the response signals features. The two introduced techniques, closely related within the framework of the thesis, hold their own individual validity.