Calibration of resistance factors for torsional reinfrced concrete beams strengthened with FRP composites

This paper presents a statistical analysis for evaluating the four most common torsional analytical models of concrete beams strengthened with fiber reinforced polymer. For this aim, data are collected from experimental works and the results predicted by four analytical models are compared with the experimental results. The most appropriate analytical model is selected and is used for determining resistance factors conducting reliability analysis. The second purpose is to study load and resistance factor design calibration for the selected model. Two possible target reliability levels have been chosen from the literature and, an iterative procedure is used for resistance factors calculation.