Resilience of a city depends strongly on both the continual operation of the strategic buildings and the damage level of the structures. Unfortunately, in many cities of the world, these aspects represent weak points and limited resources reduce the possibilities to address the problem. Therefore, in these cases, it is necessary to propose optimal and massive interventions avoiding waste. Prioritizations and selection of best retrofitting alternatives on a large territorial scale must consider technical, economic, and social criteria. The choice of criteria is one of the key issues especially for strategic buildings, such as schools and hospitals, which generally have high vulnerability and further problems related to the choice and the implementation of the retrofitting intervention. In this context, the Multi-Criteria Decision-Making (MCDM) methods can be used to provide a valuable support to deal with the intricate problem of identifying the solution of optimal intervention. In this paper, we focus on definition of the optimal retrofitting alternative. Our case study is a school campus, with several buildings, designed and constructed in the ‘80s, according to the Italian seismic code applicable at the time. A wide experimental in situ and laboratory campaign was performed in order to know and understand their main structural elements. Different retrofitting alternatives were considered and two MCDM methods were applied and compared in order to select the optimal solution. According to the current use of the buildings, the problem of disruption of occupancy has been a fundamental topic, and particular attention has been devoted to the safety conditions and operational phases in the construction site. The possibility of a next strength upgrade for incremental retrofitting was also assessed. These and other aspects have been pondered in order to promote procedures able to define optimal intervention strategies that can be easily extended to every city, so as to reduce the seismic risk of schools and increase the resilience of cities.

MCDM METHODS FOR THE IDENTIFICATION OF INTERVENTION STRATEGIES FOR SEISMIC RETROFITTING OF SCHOOL BUILDINGS

Marco Vona;Michelangelo Laterza;
2016-01-01

Abstract

Resilience of a city depends strongly on both the continual operation of the strategic buildings and the damage level of the structures. Unfortunately, in many cities of the world, these aspects represent weak points and limited resources reduce the possibilities to address the problem. Therefore, in these cases, it is necessary to propose optimal and massive interventions avoiding waste. Prioritizations and selection of best retrofitting alternatives on a large territorial scale must consider technical, economic, and social criteria. The choice of criteria is one of the key issues especially for strategic buildings, such as schools and hospitals, which generally have high vulnerability and further problems related to the choice and the implementation of the retrofitting intervention. In this context, the Multi-Criteria Decision-Making (MCDM) methods can be used to provide a valuable support to deal with the intricate problem of identifying the solution of optimal intervention. In this paper, we focus on definition of the optimal retrofitting alternative. Our case study is a school campus, with several buildings, designed and constructed in the ‘80s, according to the Italian seismic code applicable at the time. A wide experimental in situ and laboratory campaign was performed in order to know and understand their main structural elements. Different retrofitting alternatives were considered and two MCDM methods were applied and compared in order to select the optimal solution. According to the current use of the buildings, the problem of disruption of occupancy has been a fundamental topic, and particular attention has been devoted to the safety conditions and operational phases in the construction site. The possibility of a next strength upgrade for incremental retrofitting was also assessed. These and other aspects have been pondered in order to promote procedures able to define optimal intervention strategies that can be easily extended to every city, so as to reduce the seismic risk of schools and increase the resilience of cities.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11563/130232
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