Fragility functions of road and railway bridges

TitleFragility functions of road and railway bridges
Publication TypeBook Chapter
Year of Publication2014
Tsionis G, Fardis MN
Book TitleSYNER-G: Typology Definition and Fragility Functions for Physical Elements at Seismic Risk
Series TitleGeotechnical, Geological and Earthquake Engineering
ISBN Number978-94-007-7871-9

This Chapter presents a literature review of seismic fragility functions for reinforced concrete road and railway bridges. It first covers the main issues in fragility analysis, such as the systems for classification of bridges, methods for de-riving fragility functions, intensity measures, damage states and damage measures. A section is dedicated to the way the uncertainties regarding the seismic action, geometry, material properties and modelling are treated in existing studies. The Chapter deals also with the recent developments that examine special issues which were not addressed in the first generation of fragility curves. They refer to damaged and retrofitted bridges, the effects of corrosion, skew, spatial variability of the seismic action and liquefaction. Finally, a method for fast fragility analysis of regular bridges is presented. The method applies to bridges with continuous deck monolithically connected to the piers or supported on elastomeric bearings and with free or constrained transverse translation at the abutments.

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