The main goal of the proposed project was the evaluation and improvement of the dynamic performance of new and/or existing railway bridges, for high speed lines or the upgrade of conventional lines that have fast passenger traffic. This objective was achieved through the development of new computational models and the improvement of existing models, adjusted and updated through experimental measurements, and applied to the Spanish railway network.
Two experimental tests were carried out on railway bridges on the Spanish railway network in order to evaluate their dynamic behaviour by measuring their modal properties (Eigen frequencies, modal shapes and damping). From the experimental results, some Finite Element models were calibrated in order to study the dynamic performance of the bridges when real European trains and trains from European codes pass along them. Moreover, some new features were added to existing 2D analytic models (software Caldintav) and the procedure to move from 3D models to 2D models was studied.