CONTROL OF VORTEX-INDUCED VIBRATION OF A CONTINUOUS STEEL BOX GIRDER IN TRANS-TOKYO BAY HIGHWAY

Abstract

In the 10-spans continuous steel box girders (max. span: 240m) of the Trans-Tokyo Bay Highway vortex-induced vertical vibration of the girder at wind velocities around 16m/sec was observed. New type of TMD was developed and 16 TMDs were installed to suppress the first and second mode vibrations of the bridge. The amplitude 40.7cm of the first mode vibration of the girder was reduced to only 5.4cm after the installation. Vibrations of higher modes of the bridge were controlled by vertical plates installed on the bridge guard rail.