The creation of realistic Finite-Element Models (FEM) of structures is very important for the monitoring of civil engineering constructions as well as condition assessment. Specific evaluation concern focuses on the existing load bearing capacity of a bridge and the investigation and localisation of damage.
An important tool for the realisation of reliable monitoring concepts is the coordination of simulations with measured results by so- called „Model Updating“. This allows conducting a damage localisation and damage evaluation. Therefore the variation of respective correction parameters is observed. The adaptation of the mathematical model to the measured results by a complex optimisation process is performed by an interface between the FE program and the measured data. Changes of the correction parameters (e.g. stiffness) in certain areas enable more detailed conclusions on the condition of the supporting structure and its reliability.
rainer.flesch@ait.ac.at