TUNED MASS DUMPER USE FOR STRUCTURAL IMPROVEMENT BEHAVIUOR IN SOME REPRESENTATIVE ITALIAN CONSTRUCTIONS

The paper discusses the Tuned Mass Dumper (TMD) use in some representative Italian constructions having a symbolic architectural value. In particular, the paper presents the TMD use for a new tall building in Milan, two footbridges (having each other different structures) and historical chimneys (hit by a strong earthquake in 2012) located in Lombardia region. By the TMDs, these constructions improve their structural behaviours, either in the Ultimate Limit State (ULS), either in the Serviceability Limit State (SLS). Therefore, by the TMDs, the structural performances improve under the seismic and wind actions with a greater comfort, in daily use, for the occupants. For each cases the structural analysis (by finite elements model, FEM) without TMD, the related TMD’s parameters optimization and a subsequent structural analysis with TMD (emphasizing the improvements) are illustrated. Finally, for each TMDs, a design hypothesis are showed pointing out the installation procedure and the relatives costs.