Seismic Performance Verification of the Akashi-Kaikyo Bridge

摘要

Seismic retrofit work for the Honshu-Shikoku Bridges has recently been launched because therernis a concern that seismic risk for the bridges increases. This paper presents a seismic performancernverification of the Akashi-Kaikyo Bridge, the world's longest suspension bridge, against large-scalernearthquakes that are predicted at the bridge location. In the verification, an analytical modelrnincorporated nonlinear behaviors was used for dynamic analyses. As a result, although somernaccessory members such as expansion joints or bearings are damaged partially, it was found thatrntaking some minor countermeasures ensured the target seismic performance.