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Sustainability 2017, 9(6), 989; doi:10.3390/su9060989

A Multi-Step Approach to Assess the Lifecycle Economic Impact of Seismic Risk on Optimal Energy Retrofit

1
Department of Industrial Engineering, Università degli studi di Napoli Federico II, Piazzale Tecchio 80, 80125 Naples, Italy
2
Department of Structures for Engineering and Architecture, Università degli studi di Napoli Federico II, Via Claudio 21, 80125 Naples, Italy
3
Department of Medicine, Università degli studi del Molise, Via Cesare Gazzani 47, 86100 Campobasso, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Andrea Nicolini
Received: 10 May 2017 / Revised: 30 May 2017 / Accepted: 31 May 2017 / Published: 8 June 2017
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Abstract

Most European buildings built before 1980s were constructed without any design concern for energy efficiency and environmental sustainability. In addition to this issue, over the last decades, the essential need of safer buildings has progressively attracted the interest of scientific community and government institutions. However, the strong interaction between energy and structural aspects in building retrofit design has never been handled via robust and reliable approaches. The present study explores this knowledge gap by introducing a novel multi-step approach that addresses the retrofit of existing buildings by integrating energy, structural and economic aspects. To this end, a multi-stage energy optimization is carried out by implementing a genetic algorithm and a smart research strategy. Thus, the cost-optimal energy retrofit solution is identified and the impact of the expected economic losses due to seismic damage is assessed throughout the building lifecycle. The methodology is applied to a multi-story residential building, considering the effects of two different building locations, namely Milan and Norcia. These latter are characterized by similar climatic conditions but by a different level of seismic risk, which is higher for Norcia. The outcomes show that the estimated seismic economic losses associated with the energy retrofit solutions are strongly affected by the building location. Thus, the selection of the optimal energy retrofit measures should be related to the building structural behavior in order to achieve reliable economic and sustainability benefits. View Full-Text
Keywords: building simulation; building retrofit; expected economic loss; seismic risk; energy retrofit measures; multi-objective optimization; cost-optimal analysis; lifecycle; sustainability building simulation; building retrofit; expected economic loss; seismic risk; energy retrofit measures; multi-objective optimization; cost-optimal analysis; lifecycle; sustainability
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Mauro, G.M.; Menna, C.; Vitiello, U.; Asprone, D.; Ascione, F.; Bianco, N.; Prota, A.; Vanoli, G.P. A Multi-Step Approach to Assess the Lifecycle Economic Impact of Seismic Risk on Optimal Energy Retrofit. Sustainability 2017, 9, 989.

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