Hackbarth, BrittaBrittaHackbarthSigrist, ViktorViktorSigrist2023-12-082023-12-082011fib Symposium PRAGUE 2011: Concrete Engineering for Excellence and Efficiency, Praha, Czech Republic, 8-10 June 2011, Proceedings. - Vol. 2 (2011): Seite 759-762978-80-87158-29-6https://hdl.handle.net/11420/44512Structural assessment has become a major challenge in bridge engineering. Very often it is not possible to evaluate structural behaviour and strength on the basis of design equations, but more refined procedures have to be applied. Unlike in the design, where not all the requirements and boundary conditions are known and therefore a certain precaution ought to be determinant, for the examination modelling has to be more detailed and should enable the consideration of the actual conditions. For a large number of existing bridge structures the behaviour in shear is most likely to be relevant in the assessment. There are two main reasons for that: On the one hand, some of the former design concepts are not sufficiently reliable, on the other hand, corrosion of steel and deterioration of concrete may cause deficiencies with respect to strength. In this contribution a structured procedure for the analysis and assessment of reinforced concrete members subjected to shear is presented. In a first or preliminary evaluation the Generalized Stress Field Approach may be utilized and in cases where a higher level of precision is required a more general method, derived from the Cracked Membrane Model, can be applied. The two methods are outlined and their application is explained with help of an example analysis.enAnalysisBridge engineeringPost-tensioningShearStress fieldsStructural concreteCivil Engineering, Environmental EngineeringConference PaperConference Paper