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Bridges

Wide span structures (bridges, stairs, roofs) can be excited to high vibration amplitudes in one of their basic mode shapes, for example by wind or people walking. Low natural frequencies as well as low internal damping are typical for many of these large structures. With Tuned Mass Dampers these vibrations can be reduced very effectively.

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Related Case Studies

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  • Infrastructure
  • Construction

Constrained Layer Damping on Old Steel Bridge

Vibratec reduces noise on the Årsta bridge in central Stockholm. Using a techninque called constrained Layer Dampening (CLD). Noise lowered with 6 dB.

  • Infrastructure

Case Study: Tuned Mass Dampers for Pedestrian Bridge in Malmö

During the structural design of the pedestrian bridge at Bagers Plats in Malmö, it became obvious that it would require a TMD, as the lowest vertical was calculated to 1.85 Hz.Vibratec designed a TMD solution: in total 2 TMD’s with a vibration mass of each 340 kg was installed in the mid section of the…

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