Scuola Dottorale
Vieri Cardinali
vieri.cardinali(AT)unifi.it
dottorato
Architettura
curriculum
Strutture e Restauro dell’Architettura e del Patrimonio Culturale
ciclo
XXXIII
Arch. Vieri Cardinali, Firenze, 1992. Cultore della materia in Tecnica delle costruzioni (prof. M. Tanganelli). Laurea in Architettura (2017) con una tesi dal titolo “Il Teatro dell’Accademia dei Rassicurati: valutazione delle prestazioni strutturali” premiata con lode e dignità di pubblicazione, progetto segnalato durante il terzo Premio Carlo Pucci nella categoria restauro architettonico. Attualmente iscritto al corso di Dottorato in Architettura presso il DIDA. Durante tale periodo, il sottoscritto ha effettuato un soggiorno di studio presso l’Instituto Superior Técnico di Lisbona (PT) sotto la supervisione della professoressa Rita Bento dove ha avuto modo di approfondire le proprie conoscenze inerenti ad approcci probabilistici per la valutazione della vulnerabilità sismica di edifici in muratura. Contestualmente alla tesi di dottorato, ha partecipato a numerose attività didattiche e progetti di ricerca in Italia e all’estero, ha svolto attività di supporto tecnico alle campagne sperimentali condotte dal Laboratorio Prove Materiali e Strutture UNIFI e attività professionale.
È relatore per convegni nazionali ed internazionali e autore di pubblicazioni scientifiche.
Interessi scientifici
edifici in muratura, patrimonio esistente, beni culturali, analisi strutturale, rischio sismico, ingegneria sismica.
Titolo della tesi
Seismic vulnerability assessment of the residential URM buildings built during the XX century in Florence (applying for the Doctor Europaeus)
Tutor
Prof. Mario Tanganelli
Abstract
The city of Florence, famous all over the world for its historical and artistic heritage, is nowadays mostly constituted by external districts developed during the last two centuries. They have been realized by RC and masonry constructions through several interventions. Masonry structures are the majority of these buildings, characterized by regular configurations with modern masonry walls, rigid slabs and perimetral ring beams. Florence has been classified seismic zone only in 1982; therefore, most part of the considered population of buildings has been built without seismic criteria.
This work deals with the urban scale vulnerability assessment of the unreinforced masonry buildings with RC slabs built during the XX century in Florence. The public housing interventions, for their numerosity and the archive documentation of the design projects, have been chosen as representative of the coeval urban stock. A meaningful database with a large number of selected buildings was realized. Every construction has been firstly investigated adopting an empirical approach based on geometrical and mechanical parameters; houses have been divided into typological classes in function of geometrical and architectonical features. Then, a typology with a specific related case study has been selected and assessed by an analytical procedure. An equivalent frame modeling discretization has been adopted and the seismic performance has been evaluated by means of nonlinear static analyses. Both aleatory and epistemic uncertainties have been considered; then, their sensitivity has been studied. The aleatory uncertainties have been investigated adopting the star design with the central star approach, while the epistemic uncertainties have been modeled through a logic tree approach. Analytical fragility curves have been finally derived, considering both the dispersions in terms of capacity and seismic demand. The fragility curves pointed out the vulnerability of the case study and the related damage scenarios for different expected return periods. Specifically, they showed a high vulnerability of these buildings for the 475 and 975 years return period; for the Life Safety limit state (SLV), around 40% of probability to have DL4 and 40% to reach DL5 is expected. The results have been finally extended to the building class population through a simplified procedure calibrated on the analytical results. The results point out homogeneous outcomes, exhibiting a high vulnerability and a relevant brittle behavior in the plastic phase.