Considering the renovation of the existing building stock, it is necessary to develop integrated solutions aimed at the simultaneous reduction of the energy consumption, the improvement of the structural performance and, where necessary and possible, the architectural restyling of the buildings. These are measures that maximize resilience and safety and minimize the environmental impact of the existing buildings. Such interventions are designed to be conducted mainly from the outside, minimizing the disturbance caused to users. These integrated renovating projects can be effectively conducted based on the Life Cycle approach as well as following the Performance Based Design (PBD). The combined use of both methodologies maximizes the structural and energy performance of the building, while minimizing, at the same time, the environmental impact of the intervention, the overall cost of the intervention and the operational costs. The article shows a feasibility study of the upgrading strategies of a multi-story residential building considering aspects such as the reparability of the interventions, the use of sustainable materials, and the possibility of disassembly, reuse or recycling of the components at the end of life. These aspects contribute in reducing the environmental footprint of the renovated building. The present study is limited to the structural aspects. The use of PBD allows to control multiple parameters at the same time as the inter-story drift, the total drift, and the overload in the staircase, in the foundations, and in the floors. Finally, the solution is compared with a traditionally designed intervention, requiring the control of the limit states typically considered in the design of new building.

Nel settore della riqualificazione del costruito è ormai condivisa la necessità di elaborare soluzioni integrate, finalizzate alla contestuale riduzione dei consumi energetici, al miglioramento delle prestazioni strutturali, nonché alla riconfigurazione architettonica degli edifici. Si tratta di interventi che massimizzano resilienza e sicurezza e minimizzano l’impatto ambientale degli edifici esistenti. Tali interventi vengono concepiti per essere condotti prevalentemente dall’esterno, riducendo così il disturbo arrecato agli utilizzatori. I progetti degli interventi integrati possono essere efficacemente condotti ispirandosi all’approccio Life Cycle, nonché al Performance Based Design. L’uso congiunto di entrambi gli strumenti consente di massimizzare le prestazioni strutturali ed energetiche, minimizzando al contempo l’impatto ambientale, il costo complessivo dell’intervento e i costi di funzionamento sul ciclo di vita. L’articolo presenta, limitatamente agli aspetti strutturali, uno studio di fattibilità della riqualificazione di un edificio residenziale multipiano in c.a. ricorrendo ad una soluzione nella quale vengono considerati in fase progettuale anche la riparabilità delle opere, l’impiego di materiali sostenibili, la possibilità di smontaggio, riuso o riciclo dei componenti a fine vita. Riguardo alle prestazioni strutturali, il ricorso al PBD consente di controllare congiuntamente più parametri. La soluzione è infine confrontata con un intervento tradizionale progettato imponendo il solo soddisfacimento delle verifiche agli stati limite.

(2017). Life Cycle Thinking e Performance Based Design per la riqualificazione integrata del patrimonio edilizio esistente . Retrieved from http://hdl.handle.net/10446/135725

Life Cycle Thinking e Performance Based Design per la riqualificazione integrata del patrimonio edilizio esistente

Passoni, Chiara;Labò, Simone;Marini, Alessandra;Belleri, Andrea;Riva, Paolo
2017-01-01

Abstract

Considering the renovation of the existing building stock, it is necessary to develop integrated solutions aimed at the simultaneous reduction of the energy consumption, the improvement of the structural performance and, where necessary and possible, the architectural restyling of the buildings. These are measures that maximize resilience and safety and minimize the environmental impact of the existing buildings. Such interventions are designed to be conducted mainly from the outside, minimizing the disturbance caused to users. These integrated renovating projects can be effectively conducted based on the Life Cycle approach as well as following the Performance Based Design (PBD). The combined use of both methodologies maximizes the structural and energy performance of the building, while minimizing, at the same time, the environmental impact of the intervention, the overall cost of the intervention and the operational costs. The article shows a feasibility study of the upgrading strategies of a multi-story residential building considering aspects such as the reparability of the interventions, the use of sustainable materials, and the possibility of disassembly, reuse or recycling of the components at the end of life. These aspects contribute in reducing the environmental footprint of the renovated building. The present study is limited to the structural aspects. The use of PBD allows to control multiple parameters at the same time as the inter-story drift, the total drift, and the overload in the staircase, in the foundations, and in the floors. Finally, the solution is compared with a traditionally designed intervention, requiring the control of the limit states typically considered in the design of new building.
2017
Passoni, Chiara; Labo', Simone; Marini, Alessandra; Belleri, Andrea; Riva, Paolo
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