ABSTRACT

This paper describes the application of the newly developed Danish guideline to a probability-based assessment of 4 bridges in Denmark. The guideline was developed by the Danish Roads Directorate with RAMBOLL as one of the consultants. For each structure analysed, modelling of the critical limit states is presented as are the statistical techniques employed in modelling the loads and resistances. The overall aim of each analysis was to achieve a higher load rating for the structures than the results of deterministic analysis. Ultimately the cost benefits to bridge owners/managers of performing a probabilistic assessment are apparent from the results, which provide a higher load rating for the bridges than were achieved through deterministic assessment. While the guideline is intended to be applied in probability-based assessment of Danish bridges it is anticipated that it could equally be applied in other countries.