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論文投稿 Development of a Seismic-Performance Assessment Method and Retrofitting Technology Against the Liquefaction of Existing Bridges

作成年度 2018 年度
論文名 Development of a Seismic-Performance Assessment Method and Retrofitting Technology Against the Liquefaction of Existing Bridges
論文名(和訳)
論文副題
発表会
誌名 JOURNAL of Disaster Research
巻・号・回 Vol.14, No.2
発表年月日 2019/03/01
所属研究室/機関名 著者名(英名)
橋梁構造研究G大住道生
橋梁構造研究G(現 国土技術政策総合研究所)七澤利明
橋梁構造研究G谷本俊輔
橋梁構造研究G(現 パシフィックコンサルタンツ株式会社)中田光彦
抄録
In the past, earthquakes have caused critical damage to bridges built on liquefiable ground, resulting in their collapse or long-term closures. In particular, for existing bridges designed in an age when the liquefaction influence was not considered, appropriate measures should be taken as necessary. However, there are many existing stocks of bridges, which require expensive foundation reinforcement. Therefore, it is crucial to appropriately choose bridge foundations for which anti-seismic measures are a high priority and implement the measures efficiently and successively. The present study aims to develop a seismicperformance assessment method and retrofitting technology for coping with liquefiable ground. For this purpose, a large shaking-table experiment was conducted to determine the effects of the liquefiable ground on bridge-foundation behavior and verify the effect of the retrofitting technology. Based on disastercase analyses and the results of the shaking-table experiment, a seismic-performance assessment method applicable to practical designing was proposed.
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