INVESTIGATION ON VIBRATIONAL DAMPERS FOR CABLES OF TSURUMI TSUBASA BRIDGE

In this study, countermeasures using dampers were investigated against wind induced vibrations and angular bent phenomena. A newly countermeasure, which uses a combination of HDR and dampers, can make dampers installed in lower position than the conventional one which uses a combination of a rubber and dampers. Therefore it can be superior in the easiness in installation and maintenance, and in aesthetic view. It was applied to Tsurumi Tsubasa Bridge and its effectiveness was confirmed in model tests, vibration tests and field observation.