Evaluation of Empirical Fatigue Prediction Models for FRP-Strengthened RC Beams

摘要

This paper presents the results evaluating the empirical fatigue-life relationships currently available for predicting the fatigue life of reinforced concrete beams strengthened with fiber reinforced polymers. Derived from individual studies, each relationship is used to generate predictions for sets of test data that are reported in the open literature. The predictions are then analyzed for accuracy and investigated for factors that may lead to improved fatigue-life models. Analyses of data using currently available models indicate that much improvement is needed. The improvements should not only address individual factors that can affect fatigue life, but should also result in accurate predictions across multiple sets of data.