The preservation of the cultural heritage in Italy, makes masonry structures, and specially churches, important buildings. Due to the recent seismic events in the center of Italy, it is of interest to study the seismic behavior of such structures, as the level of vulnerability will determine if additional actions are required to conserve them. The vaults in San Paolo di Mirabello Church, located in Mirabello (FE), were analyzed after the earthquake of 2012 in Emilia Romagna, which caused the partial collapse of the church and just the part of its nave and the south part of its transept remained standing. The vaults in the nave, characterized by very thin thickness, were only affected at the extremes, generating interest on their structural behavior. The seismic vulnerability for the vaulted system, as well as for the remaining part of the church was studied and out of this, the corresponding structural analysis and recommended actions to take were defined, hypothesizing different scenarios. The geometry of the vaults was generated from cloud points, from which the corresponding mesh was generated automatically. With this way it was possible to observe how the actual geometry of this kind of structures, considering imperfections, influences significantly in the results. Both linear and nonlinear analyses with three-dimensional finite elements were developed to study the seismic vulnerability, and very interesting results were obtained for both cases.
La conservazione del patrimonio culturale in Italia, rende strutture in muratura, e specialmente chiese, edifici importanti. A causa dei recenti eventi sismici nel centro Italia, è di interesse studiare il comportamento sismico di tali strutture, poiché il livello di vulnerabilità determinerà se sono necessarie ulteriori azioni per conservarle. Le volte della chiesa di San Paolo di Mirabello, situata a Mirabello (FE), sono state analizzate dopo il terremoto del 2012 in Emilia Romagna che ha causato il parziale crollo della chiesa e solo la parte della sua navata e la parte sud del suo transetto è rimasta in piedi. Le volte della navata, caratterizzate da uno spessore molto sottile, sono state colpite solo agli estremi, generando interesse per il loro comportamento strutturale. La vulnerabilità sismica per il sistema a volta, così come per la parte restante della chiesa, è stata studiata e al di fuori di questo, sono state definite le corrispondenti analisi strutturali e le azioni raccomandate da intraprendere, ipotizzando diversi scenari. La geometria delle volte è stata generata da una nuvola di punti, da cui la mesh corrispondente è stata generata automaticamente. In questo modo è stato possibile osservare come geometria reale di questo tipo di strutture, considerando le imperfezioni, influenzi significativamente i risultati. Sono state sviluppate analisi lineari e non lineari con elementi finiti tridimensionali per studiare la vulnerabilità sismica, e sono stati ottenuti risultati molto interessanti per entrambi i casi.
Seismic assessment of vaulted systems in San Paolo di Mirabello church after 2012 seismic events
MURCIA CUELLAR, MARIA CAMILA;MÁRQUEZ OPORTO, RAFAEL PABLO
2017/2018
Abstract
The preservation of the cultural heritage in Italy, makes masonry structures, and specially churches, important buildings. Due to the recent seismic events in the center of Italy, it is of interest to study the seismic behavior of such structures, as the level of vulnerability will determine if additional actions are required to conserve them. The vaults in San Paolo di Mirabello Church, located in Mirabello (FE), were analyzed after the earthquake of 2012 in Emilia Romagna, which caused the partial collapse of the church and just the part of its nave and the south part of its transept remained standing. The vaults in the nave, characterized by very thin thickness, were only affected at the extremes, generating interest on their structural behavior. The seismic vulnerability for the vaulted system, as well as for the remaining part of the church was studied and out of this, the corresponding structural analysis and recommended actions to take were defined, hypothesizing different scenarios. The geometry of the vaults was generated from cloud points, from which the corresponding mesh was generated automatically. With this way it was possible to observe how the actual geometry of this kind of structures, considering imperfections, influences significantly in the results. Both linear and nonlinear analyses with three-dimensional finite elements were developed to study the seismic vulnerability, and very interesting results were obtained for both cases.| File | Dimensione | Formato | |
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https://hdl.handle.net/10589/144982