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Article type: Research Article
Authors: Okuda, M. | Fukunaga, S. | Endo, K.
Affiliations: Honshu-Shikoku Bridge Expressway Co., Ltd, Kobe, Hyogo-prefecture, Japan
Note: [] Corresponding author. Email: [email protected]
Abstract: Presented in this paper is the original seismic design and the seismic performance retrofit study against large-scale earthquakes of the Akashi Kaikyo Bridge. The Akashi Kaikyo Bridge is the world’s longest suspension bridge and was completed in 1998. In the original seismic design, an inland near-field earthquake with large magnitude was not considered for the seismic design force. Although the bridge encountered the Hyogo-ken Nanbu Earthquake in 1995, it was not seriously damaged since the earthquake occurred during its construction. Therefore, a seismic performance retrofit study against large-scale earthquakes has been started. In the seismic performance retrofit study, site-specific large-scale earthquakes including inland near-field earthquakes were defined based on the latest seismological information. As a result, it was found that target seismic performance was ensured by taking some minor countermeasures.
Keywords: Akashi Kaikyo Bridge, large-scale earthquake, seismic performance
DOI: 10.1080/15732480903142807
Journal: Bridge Structures, vol. 5, no. 2, 3, pp. 109-118, 2009
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