Abstract
This paper deals with a human-induced lateral vibration on a existing pedestrian suspension bridge with the center span of 62.4 m which is constructed in an amusement park located in Osaka prefecture. Based on full scale measurements under the walking load of 20-30 pedestrians, either 1st symmetric or 1st asymmetric lateral vibration is observed. It seemed that the pedestrians were very difficult to walk through the bridge from end to end when these lateral vibrations were occurred. 18 acrylic containers each with size of 450mm×300mm (water depth of 60mm) were used as TLDs for the 1st symmetric vibration. 36 acrylic same containers with size of 300mm×450mm (water depth of 60mm) installed in the opposite direction were also used for the 1st asymmetric vibration. It was confirmed that suppression with TLDs might be useful in decreasing the vibration level.
