Usually, the bridge used to traverse rivers, channels and straits is a fixed type. However in cases where the seabed of a thick layer of soft ground, a floating bridge is often more suited than a fixed bridge. This study proposed a system for anchoring a floating bridge with submarine cable to create a floating bridge suitable for places where ground subsidence occurs. Using an experimental tank, the bridge’s motion characteristics while exposed to waves and seismic were tested and a numerical analysis was performed.
A relatively strong consistency was found between our analyses of wave motion and seismic response of floating bridges taking account of anchorage characteristics, and the test results. It was found that the floating bridge with submarine cable system was highly suitable for locations where there was significant ground subsidence.
