Masonry buildings represent a relevant portion of the italian building heritage and since the italian region is exposed to an high seismic hazard, to understand the seismic behavior of this structural tipology is of great interest. The Central Italy earthquake of 2016 has been the most dangerous event of the last decades, leading to the destruction of several villages in Central Italy and inducing an extremely high number of victims. The event on which this study is focused on is the seismic shock which has began the seismic sequence of 2016, that is the event of 24/08/2016 whose epicentre is located in Accumoli (RI). The recent seismic events which have taken place in Italy have led the scienti_c community to focus their attention on the defects of collapsed buildings, looking for the causes which have driven to structural fails and damages. Conversely, in this study it is investigated the reason why some buildings have successfully resisted to the seismic event, comparing the empirical data with the italian building code provisions (NTC2018) and the most re_ned modelling techniques. A key role is played by the AeDES forms (an engineering tool to evaluate if a building satis_es compliance with safety standards in a fast way) which have been compiled after the earthquake of 2016, which are both analyzed and employed to select four buildings, whom are studied in a deep manner through the linear analysis and non-linear analysis (pushover). The analysis are performed by means of two commercial codes, where they are implemented two distinct FE tipologies devoted to masonry modelling (bidimensional FE and frame by macroelements). The results coming from the analysis are compared to the empirical data contained in the AeDES form and with the materials resistance parameters values prescribed by the building code (tab. C8.5.I).
Gli edifici in muratura rappresentano un'importante porzione del patrimonio edilizio italiano, ed essendo lo stesso territorio italiano esposto a un elevato rischio sismico, studiare il comportamento di questa tipologia strutturale sottoposta alle azioni sismiche è di grande interesse. Il terremoto del Centro Italia del 2016 è stato uno degli eventi più devastanti degli ultimi anni, portando alla distruzione di molti borghi del Centro Italia e provocando un elevato numero di vittime. L'evento oggetto di questo studio è la scossa che ha dato inizio alla sequenza sismica del 2016, ossia l'evento del 24/08/2016 con epicentro ad Accumoli (RI). I recenti eventi sismici che hanno colpito l'Italia hanno focalizzato l'attenzione della comunità scientifica sui difetti degli edifici collassati, ricercando le cause dei crolli e dei danneggiamenti. Al contrario in questo studio si indaga sulla ragione per cui alcuni edifici abbiano resistito all'evento sismico, confrontando i dati empirici con le prescrizioni provenienti dalle Norme Tecniche e dalle tecniche di calcolo più recenti. Un ruolo chiave è occupato delle schede AeDES compilate in occasione del sisma del 2016, che vengono prima analizzate e poi utilizzate perla selezione di quattro edifici, che vengono studiati in maniera approfondita attraverso l'analisi lineare e non lineare (pushover), utilizzando due software commerciali nei quali sono implementate due tipologie di elementi finiti per la modellazione della muratura distinte (elementi finiti bidimensionali e frame by macroelements). I risultati provenienti dalla modellazione vengono raffrontati a i dati empirici contenuti nelle schede AeDES e con i valori di resistenza dei materiali prescritte dalle normative vigenti (tab. C8.5.I).
Edifici in muratura situati in Amatrice, Accumoli, Capitignano : comparazione del comportamento sismico atteso e livello di danno rilevato con classificazione AeDES
Devoto, Enrico
2019/2020
Abstract
Masonry buildings represent a relevant portion of the italian building heritage and since the italian region is exposed to an high seismic hazard, to understand the seismic behavior of this structural tipology is of great interest. The Central Italy earthquake of 2016 has been the most dangerous event of the last decades, leading to the destruction of several villages in Central Italy and inducing an extremely high number of victims. The event on which this study is focused on is the seismic shock which has began the seismic sequence of 2016, that is the event of 24/08/2016 whose epicentre is located in Accumoli (RI). The recent seismic events which have taken place in Italy have led the scienti_c community to focus their attention on the defects of collapsed buildings, looking for the causes which have driven to structural fails and damages. Conversely, in this study it is investigated the reason why some buildings have successfully resisted to the seismic event, comparing the empirical data with the italian building code provisions (NTC2018) and the most re_ned modelling techniques. A key role is played by the AeDES forms (an engineering tool to evaluate if a building satis_es compliance with safety standards in a fast way) which have been compiled after the earthquake of 2016, which are both analyzed and employed to select four buildings, whom are studied in a deep manner through the linear analysis and non-linear analysis (pushover). The analysis are performed by means of two commercial codes, where they are implemented two distinct FE tipologies devoted to masonry modelling (bidimensional FE and frame by macroelements). The results coming from the analysis are compared to the empirical data contained in the AeDES form and with the materials resistance parameters values prescribed by the building code (tab. C8.5.I).| File | Dimensione | Formato | |
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https://hdl.handle.net/10589/165112