Beurteilung der Zuverlässigkeit von Bestandstragwerken hinsichtlich einer Querkraftbeanspruchung

Reliability Assessment of Existing Structures subjected to Shear Force

Probabilistic analyses are becoming more and more important in civil engineering. Probabilistics can be used for the calibration of partial safety factors of the semi probabilistic safety concept of current codes as well as in the context of sustainability evaluations of existing buildings. For reinforced concrete components subjected to bending, the limit state function for structural failure can be specified clearly because of a well-defined mechanical model. By contrast, for the formulation of the mechanical model of shear carrying capacity there are still large uncertainties. The following article deals with the reliability of components in building structures subjected to shear force and should be understood as a support selecting appropriate statistical parameters of model uncertainties for probabilistic calculations. The proposed statistic parameters of model uncertainties were selected out of extensive parameter studies in view of the target reliability level.