Vulnerability Methods and Damage Scenario for Seismic Risk Analysis as Support to Retrofit Strategies: an European Perspective (2006)
The inherent seismic vulnerability of existing R.C. buildings, designed prior to the introduction of adequate seismic code provisions in the early/mid-1970s, has been dramatically confirmed by the catastrophic socio-economical consequences of earthquake events that have occurred worldwide in the past decade. The urgent need for the development of feasible and efficient structural mitigation strategies, and the implementation of “standardized” retrofit solutions for intervention at urban or territorial scale, has received increasing recognition and attention. Damage scenario and seismic risk analysis, along with the use of a GIS-environment to represent the results, are considered as a helpful tool to support the decision making for planning and prioritizing seismic retrofit intervention programs at large scale. In this paper, after an overview of current vulnerability methods for seismic risk or damage scenario analysis at a territorial scale, tentative suggestions for possible refinements will be provided with particular focus on the vulnerability models for pre-1970 reinforced concrete buildings. Improvements should include the possibility to account for the peculiar alternative damage limit states and collapse mechanisms observed in real earthquakes and further confirmed by recent numerical and experimental investigations. Comparative evaluation of the reduced level of expected damage after alternative retrofit solutions will be carried out and described in terms of fragility curves. A damage scenario analysis, referred to a case study area in Italy, will be provided as further exemplification of the effects of implementing a multi-level retrofit strategy approach at territorial scale.
CitationGiovinazzi, S., Lagomarsino, S., Pampanin, S. (2006) Vulnerability Methods and Damage Scenario for Seismic Risk Analysis as Support to Retrofit Strategies: an European Perspective. Napier, New Zealand: New Zealand Society of Earthquake Engineering 2006 Conference (NZSEE 2006): Remembering Napier 1931 - Building on 75 Years of Earthquake Engineering in NZ, 10-12 Mar 2006. Proceedings of the New Zealand Society for Earthquake Engineering Conference 2006, Paper No. 14, 10pp.
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Alternative Retrofit Strategies For Pre'70 R.C. Buildings: Vulnerability Models and Damage Scenarios Giovinazzi, S.; Pampanin, Stefano; Lagomarsino, S. (University of Canterbury. Civil and Natural Resources Engineering, 2006)The inherent seismic vulnerability of existing R.C. buildings, designed prior to the introduction of adequate seismic code provisions in the early/mid-1970s, has been dramatically confirmed by the catastrophic socio-economical ...
Balbi, A.; Galasco, A.; Giovinazzi, S.; Lagomarsino, S.; Parodi, S. (University of Canterbury. Civil and Natural Resources Engineering, 2006)"Scenario Sismico" is a GIS tool designed and implemented by the authors for the simulation and the representation of real time damage scenarios in Liguria Region. The specific aim of the tool is to suport local Civil ...
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