Shaking table test and numerical simulation on seismic performance of a bridge column integrated by multiple steel pipes with directly-connected piles

• Isobe Koichi

  Hokkaido University

• Sugiyama Hiroki

  Hanshin Expressway Co. Ltd.

• Shinohara Masatsugu

  Hanshin Expressway Co. Ltd.

• Kobayashi Hiroshi

  Hanshin Expressway Co. Ltd.

• Sawamura Yasuo

  Kyoto University

• Mitsuyoshi Yasuo

  Kyoto University

• Kimura Makoto

  Kyoto University

抄録

A bridge column integrated by multiple steel pipes and connected directly to piles without a footing has been proposed to design a rational foundation of the column. Based on the past achievements, the proposed substructures possess an excellent advantage of reduction of strain at the column through strain decentration at footing point. In addition, reduction in footing weight contributes to decrease pile strain. On the other hand, the proposed substructure has some disadvantages i.e. increase in strain and displacement of piles. But it has been revealed that the strain generated at piles can be minimised by using a beam in the ground. In this paper, the seismic performance of the bridge column structure grounded in liquefiable sand is evaluated based on the large-scale shaking tests using a bridge column model with the scale of 1/20. Subsequently, a soil-water coupled FE analysis is conducted to reproduce the experimental results and confirm the seismic performance and the detail of the mechanism.

収録刊行物

• Japanese Geotechnical Society Special Publication

  Japanese Geotechnical Society Special Publication 1 (6), 35-40, 2015

  公益社団法人 地盤工学会

キーワード

• damage-controlled structure
• pile foundation
• footing-less
• liquefaction
• shaking table test
• FE analysis

詳細情報

• CRID: 1390282680741483520
• NII論文ID: 130005095794
• DOI: 10.3208/jgssp.jpn-14
• ISSN: 21888027
• Web Site: https://www.jstage.jst.go.jp/article/jgssp/1/6/1_JPN-14/_pdf
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可