This thesis work presents the analysis and proposal of rehabilitation of the historical city center damaged by the seismic events, with particular reference to the case study of the post-earthquake reconstruction of Castelluccio di Norcia, a village of the Municipality of Norcia in the Umbrian Apennines, that has been severely hit by the earthquake of 30 October 2016. The vulnerability analysis of the historic center of Castelluccio di Norcia is characterized by the peculiar presence of complex aggregate buildings. This widespread typology in historic masonry buildings presents numerous aspects of intrinsic vulnerability, some of them derive from morphological and constructive transformations such as modifications and previous interventions, some of them can affect the structural behavior in the event of a seismic event such as the presence of non-aligned structural components and irregular combinations from the geometric point of view or stiffness, etc. In addressing the problem of post-earthquake reconstruction, the study focused on: • In-depth analysis of the typological characteristics of the buildings through the surveys performed with the aim of developing an intervention methodology, or to define intervention guidelines to be used in the redevelopment and revitalization process of a village, in the more general perspective of reconstruction; • The study of a selected complex aggregate building in the historical city center of Castelluccio di Norcia which was based on historical research, survey and the analysis of the structure. The proposals for repair and strengthening interventions are based on the study of vulnerability and weakness of the structural units, collapse mechanisms and the damage patterns of the masonry structure; • The evaluation of the previous intervention and the proposal of future possible repair and retrofitting intervention; The final aim of this work was to define possible strategies for the rebirth of the village of Castelluccio di Norcia, which could in some way be extended to other small historic centers hit by earthquakes or other natural hazards; the definition of wider regulations and guidelines to be provided in the context of the management of the risk of disasters and expandable to more contexts. Preliminary operations before the reconstruction are proposed, together with the reconstruction guidelines for the historic center. The strategy is therefore proposed not only to keep memory and recovery original appearance of Castelluccio di Norcia, but also to make the village organic to live again.
Questo lavoro di tesi presenta l'analisi e la proposta di risanamento del centro storico della città danneggiato dagli eventi sismici, con particolare riferimento al caso studio della ricostruzione post-terremoto di Castelluccio di Norcia, un villaggio del Comune di Norcia nell'Appennino Umbro, che è stato gravemente colpito dal terremoto del 30 ottobre 2016. L'analisi della vulnerabilità del centro storico di Castelluccio di Norcia è caratterizzata dalla presenza peculiare di aggregati complessi. Questa tipologia diffusa negli edifici storici in muratura presenta numerosi aspetti di vulnerabilità intrinseca, alcuni dei quali derivano da trasformazioni morfologiche e costruttive come modifiche e interventi precedenti, alcuni possono influenzare il comportamento strutturale in caso di un evento sismico come la presenza di componenti strutturali non allineati e combinazioni irregolari dal punto di vista geometrico o rigidità, ecc. Nell'affrontare il problema della ricostruzione post-terremoto, lo studio si è concentrato su: • Analisi approfondita delle caratteristiche tipologiche degli edifici attraverso le indagini effettuate allo scopo di sviluppare una metodologia di intervento o di definire linee guida di intervento da utilizzare nel processo di riqualificazione e rivitalizzazione di un villaggio, nella prospettiva più generale della ricostruzione; • Lo studio di un aggregato complesso selezionato nel centro storico di Castelluccio di Norcia, basato su ricerche storiche, indagini e analisi della struttura. Le proposte di riparazione e rafforzamento degli interventi si basano sullo studio della vulnerabilità e debolezza delle unità strutturali, sui meccanismi di collasso e sui modelli di danno della struttura in muratura; • La valutazione dell'intervento precedente e la proposta di possibili interventi di riparazione e di adeguamento futuri; Lo scopo finale di questo lavoro era definire possibili strategie per la rinascita del villaggio di Castelluccio di Norcia, che potrebbe in qualche modo estendersi ad altri piccoli centri storici colpiti da terremoti o altri pericoli naturali; la definizione di regolamenti e linee guida più ampi da fornire nel contesto della gestione del rischio di catastrofi ed espandibili in più contesti. Vengono proposte operazioni preliminari prima della ricostruzione, insieme alle linee guida per la ricostruzione del centro storico. La strategia viene quindi proposta non solo per conservare la memoria e il recupero dell'aspetto originale di Castelluccio di Norcia, ma anche per rendere il villaggio organico per rivivere.
The seismic vulnerability of the built heritage of Italian historical village : the case of Castelluccio di Norcia
WANG, TIANJIAO;QU, MIN;ZHU, YIDIE
2019/2020
Abstract
This thesis work presents the analysis and proposal of rehabilitation of the historical city center damaged by the seismic events, with particular reference to the case study of the post-earthquake reconstruction of Castelluccio di Norcia, a village of the Municipality of Norcia in the Umbrian Apennines, that has been severely hit by the earthquake of 30 October 2016. The vulnerability analysis of the historic center of Castelluccio di Norcia is characterized by the peculiar presence of complex aggregate buildings. This widespread typology in historic masonry buildings presents numerous aspects of intrinsic vulnerability, some of them derive from morphological and constructive transformations such as modifications and previous interventions, some of them can affect the structural behavior in the event of a seismic event such as the presence of non-aligned structural components and irregular combinations from the geometric point of view or stiffness, etc. In addressing the problem of post-earthquake reconstruction, the study focused on: • In-depth analysis of the typological characteristics of the buildings through the surveys performed with the aim of developing an intervention methodology, or to define intervention guidelines to be used in the redevelopment and revitalization process of a village, in the more general perspective of reconstruction; • The study of a selected complex aggregate building in the historical city center of Castelluccio di Norcia which was based on historical research, survey and the analysis of the structure. The proposals for repair and strengthening interventions are based on the study of vulnerability and weakness of the structural units, collapse mechanisms and the damage patterns of the masonry structure; • The evaluation of the previous intervention and the proposal of future possible repair and retrofitting intervention; The final aim of this work was to define possible strategies for the rebirth of the village of Castelluccio di Norcia, which could in some way be extended to other small historic centers hit by earthquakes or other natural hazards; the definition of wider regulations and guidelines to be provided in the context of the management of the risk of disasters and expandable to more contexts. Preliminary operations before the reconstruction are proposed, together with the reconstruction guidelines for the historic center. The strategy is therefore proposed not only to keep memory and recovery original appearance of Castelluccio di Norcia, but also to make the village organic to live again.| File | Dimensione | Formato | |
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https://hdl.handle.net/10589/153778