This study analyzes the interaction between earthquakes and post-earthquake fires in reinforced concrete buildings, highlighting the limitations of a single-hazard approach and demonstrating the advantages of an integrated multi-hazard assessment. A residential building in L’Aquila, constructed in 1973, was modeled to evaluate its performance in pre-earthquake, post-earthquake, and post-earthquake fire scenarios. The nonlinear analysis conducted with SAP2000 allowed for the identification of structural damage levels resulting from seismic action. The earthquake-damaged elements were subsequently subjected to fire scenarios through thermal simulations performed with GmSAFIR. The results highlight the progressive reduction in stiffness, strength, and ductility of the damaged structural elements, emphasizing the importance of an integrated approach to enhancing building safety and supporting more effective retrofit strategies.
Il presente studio analizza l’interazione tra terremoti e incendi post-sisma negli edifici in calcestruzzo armato, evidenziando i limiti di un approccio mono-rischio e dimostrando i vantaggi di una valutazione integrata multi-rischio. Si è modellato un edificio esistente per uso residenziale situato a L’Aquila, risalente al 1973. Sono state esaminate le sue prestazioni nelle configurazioni pre-sisma, post-sisma e in scenari di incendio post-sisma. L’analisi non-lineare condotta con SAP2000 ha permesso di identificare i livelli di danneggiamento strutturale, derivante dall’azione sismica. Gli elementi compromessi dal terremoto sono stati successivamente esposti a scenari di incendio attraverso simulazioni termiche condotte con GmSAFIR. I risultati ottenuti evidenziano la progressiva riduzione di rigidezza, resistenza e duttilità degli elementi strutturali danneggiati, sottolineando l’importanza di un approccio integrato per migliorare la sicurezza degli edifici e supportare strategie di intervento più efficaci.
APPROCCIO MULTI-HAZARD: VALUTAZIONE DELLE PRESTAZIONI DI UN EDIFICIO SOGGETTO A SCENARI DI INCENDIO POST-SISMA
LA NOTTE, GIUSEPPE
2023/2024
Abstract
This study analyzes the interaction between earthquakes and post-earthquake fires in reinforced concrete buildings, highlighting the limitations of a single-hazard approach and demonstrating the advantages of an integrated multi-hazard assessment. A residential building in L’Aquila, constructed in 1973, was modeled to evaluate its performance in pre-earthquake, post-earthquake, and post-earthquake fire scenarios. The nonlinear analysis conducted with SAP2000 allowed for the identification of structural damage levels resulting from seismic action. The earthquake-damaged elements were subsequently subjected to fire scenarios through thermal simulations performed with GmSAFIR. The results highlight the progressive reduction in stiffness, strength, and ductility of the damaged structural elements, emphasizing the importance of an integrated approach to enhancing building safety and supporting more effective retrofit strategies.I documenti in UNITESI sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/20.500.14253/74090