Structural modeling and dynamic testing of high-speed railway bridges

This paper presents the validation of finite element models for modal analysis of prestressed concrete high-speed railway bridge decks. Structural modeling is developed with different levels of complexity using beam finite elements and three-dimensional solid finite elements. Geometrical and mechanical properties of the bridge decks are calibrated based on data gathered from both design technical documentation and outcomes of an experimental campaign, including non-destructive tests and laboratory tests. The results of finite element analyses are compared with the experimental outcomes based on dynamic modal tests to validate the structural models, collect information about the structural behavior and dynamic response of the bridge decks, and support the condition assessment of the railway bridges.