Physical and social vulnerability for the multi-hazard risk analysis of components and systems

Description

This webinar investigates the topic of vulnerability models for the multi-hazard risk analysis of components and systems, as one of the outcomes of the Horizon Europe project MEDiate. It starts with a state-of-art review of physical vulnerability and fragility models in the case of single hazards, before tackling the issue of multiple hazards that may occur to a given asset during the same event or throughout the lifetime of the exposed element. The consideration of such combinations of multiple hazard loadings raises numerous issues, such as the harmonisation of vulnerability functions in terms of damage states, the consideration of the order in which damaging events occur, the characterisation of the exposure with respect to hazard-specific features, etc.
Some application examples are provided, such as the modelling of flood vulnerability, accounting for sequences of successive events, or even coupled with uncorrelated events such as earthquakes. The case of triggered damaging events is also investigated through the accumulation of damage for buildings exposed to an earthquake followed by a tsunami.
Finally, the last part of the webinar is devoted to the evaluation of socio-economic vulnerability, by detailing the various dimensions of social vulnerability and by demonstrating how different financial situations and other burdens may affect social groups differently in case of a disaster. An example of regional social vulnerability analysis will be shown for the county of Essex (UK).

Schedule

1. Introduction to the modelling of multi-hazard vulnerability modelling: state-of-the-art and pending challenges [Pierre Gehl, BRGM]

2. Empirical flood vulnerability assessment of masonry buildings using remote data collection  [Ahsana Parammal Vatteri, UCL]

3. Damage state-dependent fragility models for RC buildings exposed to flood and seismic hazards [Konstantinos Trevlopoulos, BRGM]

4. Adjustability of exposed elements by updating their capacity for resistance after a damaging event: application to an earthquake-tsunami cascade scenario [Caterina Negulescu, BRGM]

5. Socio-Economic vulnerability for disasters, with an application to Essex (UK) [Nadeeshani Wanigarathna, ARU]

6. Questions and open discussion [Everyone]