Effectiveness of Seismic Isolation Strategy in Retrofitting of Simply Supported Span Bridges


Abstract eng:
The paper investigates the reliability of simply supported bridges retrofitted with seismic isolation, using fragility curves, which describe the probability of reaching a certain damage level for an assigned seismic intensity. Taking advantage of the Multi Stripes methodology, nonlinear dynamic analyses of a multi-span bridge, representing the existing ones in Italy built in the 60', have been carried out in order to obtain the fragility functions. The obtained results allow to assess the isolation retrofit strategies effectiveness to mitigate the seismic risk of simply supported bridges, highlighting the influence of different design strategies on the probability of exceeding the limit states considered.

Contributors:
Conference Title:
Conference Title:
16th World Conference on Earthquake Engineering
Conference Venue:
Santiago (CL)
Conference Dates:
2017-01-09 / 2017-01-13
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Text je chráněný podle autorského zákona č. 121/2000 Sb.



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 Record created 2017-01-18, last modified 2017-01-18


Original version of the author's contribution as presented on USB, paper 4171.:
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