APPLICATIONS / EXAMPLES

Reliability assessment of box-girder bridge in Vienna

The single span bridge located in Vienna was assessed by Pukl et al. in 2002. It is a fully post-tensioned box-girder bridge made of 18 segments with lengths of 2.485 m each. The segments were cast from B500 concrete and are reinforced with St 50 mild steel. The post-tensioning tendons consist of 20 strands St 160/180. The total length of the bridge is 44.60 m, the width 6.40 m and the height 2.10 m.

Due to the ongoing construction project the bridge has to be demolished. Before the demolition a range of non-destructive tests as well as finally a full-scale destructive load test will be performed. The stochastic simulation served as the predictive numerical study for planning and optimizing the test set-up. The statistical properties of the selected random variables including statistical correlation were collected from several sources (9 variables for concrete, 4 for prestressing strands). A statistical simulation of the load-deflection diagram and, consequently, a reliability calculation have been performed.

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