The master thesis deals with evaluating shear capacity of decks in existing reinforced concrete bridges. We focused on shorter bridges with T-beams. Shear response assessment with existing models are usually less reliable. Given that, we decided to evaluate shear capacity of considered T-beams in several ways and compare results in order to find out what procedures are suitable for this type of construction. For this purpose, we examined five different models, the currently valid Eurocode 2, the new version of the Eurocode 2 that will be included in the second generation of Eurocodes, the currently valid Eurocode 8-3, the former regulations for the design of reinforced concrete structures PBAB and The modified compression field theory (MCFT). According to all the models, we calculated shear capacity of decks of two existing reinforced concrete bridges, which were previously inspected and the actual amount and shape of the installed shear and bending reinforcement was determined. We compared the results obtained with different models and analyzed the causes of the differences between them. We analyzed the influence of typical parameters on the shear capacity of T-beams and determined which of the used procedures are suitable in considered cases.
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