Abstract
Floating structures in water generally have better characteristics in respect to seismic resistance. Because of the few studies on actual floating bridges, there are still some aspects concerning seismic response characteristics that remain unclear. This report studied structural behavior under seismic conditions of a floating bridge that was anchored with submarine cable, a newly conceived system, by conducting underwater vibration experiments and numerical analysis.
As the floating bridge used in the research was comparatively flexibly anchored with submarine cable it has a long-period structure. When the behavior under seismic conditions of this structure was investigated and analyzed, the floating bridge with long-period structure and with submarine cable had less of a response acceleration than a conventional short-period type fixed bridge, and therefore had better seismic resistance characteristics.
