Relationship between flood action and damage in buildings, using damage functions based on constructive and resistance parameters of different types of buildings, is required for a reliable loss prediction and an effective vulnerability assessment front flood risk in built environments. In this sense, is possible to determinate damage in both scales, micro- scale, of single building, or macroscale, of a stock of buildings with similar characteristics. This approach in flood risk assessment of historical structures is valuable, since that, damage curves based on specific constructive parameters and material characteristics permit a most accurate assessment, that permit safeguard not only the structure itself but also the historical technologies of construction. Furthermore, loss predictions help to determinate the cost-benefit of the intervention needed, contribution that in heritage field is also favourable, especially for investors, since the costs of conservation use to be high. On the basis of the inspection data collected on 2017 in the historical centre of Guimarães, Portugal, and with a detailed analysis of material characteristics and constructive technologies of a representative historical Portuguese building; damage curves and loss prediction were developed on this research, in way to give an overview of the application and systematic analysis that this approach permits.
La relazione tra azioni di alluvione e danni sugli edifici, utilizzando funzioni di danno basate su parametri costruttivi e di resistenza delle diverse tipologie di fabbricato, è necessaria per un'efficace valutazione della vulnerabilità in caso di alluvione. In questo senso, è possibile determinare il danno alla micro scala, di singolo edificio, ed anche alla macro scala di uno comparto di edifici con caratteristiche simili. Questo approccio nella valutazione del rischio di alluvione delle strutture storiche è particolarmente critico, poiché le curve di danno basate su specifici parametri costruttivi e caratteristiche materiali debbono tener conto anche delle tecnologie storiche di costruzione. Inoltre, le previsioni di perdita aiutano a determinare il rapporto costo-beneficio dell'intervento necessario considerato quanto i costi di conservazione siano elevati. La ricerca ha preso in considerazione i dati di ispezione raccolti nel 2017 nel centro storico di Guimarães, in Portogallo, tramite un'analisi dettagliata delle caratteristiche materiali e delle tecnologie costruttive di un edificio storico portoghese rappresentativo. Grazie a questi dati è stato possibile sviluppare le curve di danno e le previsione delle perdite, in modo da fornire una panoramica dell'applicazione e dell'analisi sistematica che questo approccio consente.
Damage curves and loss prediction in historical buildings for flood risk assessment.
NAVIA MIRANDA, FABIANA ANDREA;Guida A.Membro del Collaboration Group
;Manfreda S.
Membro del Collaboration Group
2018-01-01
Abstract
Relationship between flood action and damage in buildings, using damage functions based on constructive and resistance parameters of different types of buildings, is required for a reliable loss prediction and an effective vulnerability assessment front flood risk in built environments. In this sense, is possible to determinate damage in both scales, micro- scale, of single building, or macroscale, of a stock of buildings with similar characteristics. This approach in flood risk assessment of historical structures is valuable, since that, damage curves based on specific constructive parameters and material characteristics permit a most accurate assessment, that permit safeguard not only the structure itself but also the historical technologies of construction. Furthermore, loss predictions help to determinate the cost-benefit of the intervention needed, contribution that in heritage field is also favourable, especially for investors, since the costs of conservation use to be high. On the basis of the inspection data collected on 2017 in the historical centre of Guimarães, Portugal, and with a detailed analysis of material characteristics and constructive technologies of a representative historical Portuguese building; damage curves and loss prediction were developed on this research, in way to give an overview of the application and systematic analysis that this approach permits.File | Dimensione | Formato | |
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