A mechanical and economical based framework to help decision-makers for natural hazards and malicious events impact on infrastructure prevention

P-J. Tisserand () and M. Ragueneau ()
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P-J. Tisserand: LMT - Laboratoire de Mécanique et Technologie - ENS Cachan - École normale supérieure - Cachan - CNRS - Centre National de la Recherche Scientifique, SNCF Réseau [La Plaine st Denis]
M. Ragueneau: SNCF Réseau [La Plaine st Denis]

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Abstract: Many studies in economics deal with the non-reliability cost to assess insurance fees or investment analyses, but none takes into consideration the mechanical aspect of reliability analysis. Other studies in mechanics give some tools and methods to carry out reliability analyses and fragility study. This study developed a framework where economical and mechanical considerations for infrastructure investment decision-making. The theoretical reasoning is here developed to couple mechanical reliability analyses, which are composed of fragility curves, and economical reliability analyses, which is based on resilience cost functions. This coupling is carried out with some probabilistic considerations, giving the concept of "probable cost of failure". The strength of this framework is that it can be used to analyze all possible critical components in a network with all possible natural hazards or malicious event or other undesired events which it is possible to assess its probability of occurrence. The results of the analysis are indicators of probable cost of failure of an infrastructure, which represents the insurance fee. These indicators can be computed for railway lines, for critical components, for events. This tool enables decision-makers to prioritize safety investments and to guide strategic choices. The next step of this study will be to develop smart data analysis tools, because of this framework needs and produces a lot of data, which must be smartly analyzed and presented.

Date: 2019-10-28
New Economics Papers: this item is included in nep-ias
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Published in WCRR 2019, 12th World Congress on Railway Research, Oct 2019, Tokyo, France

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