Improvement of numerical simulation due to dynamic in-situ investigations - Assessment of industrial structures with potential risk

ABSTRACT: The paper summarizes the ongoing research activities for assessment of important exiting structures and discusses general aspects addressed to the topic. An improved method for the elaboration of precise structural models is presented, which is in combination of dynamic in-situ measurements and FE-calculations. The procedure is applied to a RC building with an inside radioactive waste combuster. For consideration the interaction between the investigated main structure to adjacent building parts and inside machinery complex detailed analysis were carried out. With dynamic in-situ tests under forced excitation by usage a reaction mass exciter the dynamic behaviour of the substructures were determined. That followed a model updating procedure for the established numerical finite element model and ensures significantly increase of reliability by numerical investigations. The presented approach describes a holistic procedure for the assessment and retrofitting of existing structures.