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http://dx.doi.org/10.12989/sem.2014.49.2.163

Safety factor calibration for bridge concrete girders  

Silva, Rita C. (Faculty UnB Gama, Complexo de Educacao, University of Brasilia)
Cremona, Christian (Directorate for Research and Innovation, Ministry of Ecology, Energy, Sustainable Development and Sea)
Publication Information
Structural Engineering and Mechanics / v.49, no.2, 2014 , pp. 163-182 More about this Journal
Abstract
Safety factors proposed in codes CEB, B.A.E.L 91 and EUROCODE 1 cover a great number of uncertainties; making them inadequate for the assessment of existing structures. Suitable safety factors are established using a probabilistic assessment, once real dimensions, materials strength and existing structures deterioration mechanisms are taken into account. This paper presents a calibration method for safety factors using a typical set of RC bridges in France. It considers the principal stages of corrosion provoked by $CO_2$ and $Cl^-$ penetration and threshold indexes (${\beta}_0$) for existing structures. Reliability indexes are determined by the FORM method in the calibration method.
Keywords
calibration; corrosion; reinforced concrete; reliability; safety factors;
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Times Cited By KSCI : 1  (Citation Analysis)
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