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Seismic vulnerability of standardised industrial components: application to oil storage tanks

Iunio Iervolino, Giovanni Fabbrocino, Gaetano Manfredi

Proceedings of the 13th World Conference on Earthquake Engineering

2004/08/01

Industrial risk requires taking into account natural hazards including earthquakes. In the Quantitative Risk Analysis (QRA) perspective seismic failure may be added to system faulty events. Fragility analysis of industrial components presents some aspects that requires the development of specific reliability tools. The present paper discusses the definition of a rational procedure for seismic vulnerability assessment of standardized industrial constructions in a probabilistic framework.

The coverage of a category of components by a single analysis process and the independence on the assumptions on the structural model, even if dynamic analyses are performed, can be addressed as the main advantages of the proposed method. Both seismic capacity and demand are considered as probabilistic.

The application example is focused on the elephant foot buckling of unanchored sliding tanks. A regression- based method is applied to relate fragility curves to parameters varying in the domain of variables for structural design.

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