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Dante Tolentino,Carlos A. Carrillo-Bueno 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.4
An approach to evaluate the structural reliability taking into account the degradation of the structural capacity due to corrosion ofreinforced concrete buildings at the end of a time interval is proposed. The structural reliability is expressed in terms of theconfidence factor, within a Demand and Capacity Factor Design format (DCFD). A new closed-form mathematical expression thatconsiders the non-linear structural capacity degradation due to corrosion by means of a second degree polynomial function isdeveloped. The confidence factors are obtained under the assumption that the structural capacity degradation due to corrosionfollows a linear and non-linear function over a time interval. The structural reliability is obtained for a three-story reinforced concretebuilding subjected to two sets of real seismic ground motions recorded in Acapulco Bay Mexico. Both, aleatory and epistemicuncertainties are taken into account into the analysis. A maximum difference of 3.5% between both functions after 83 years from theconstruction of the building was found.