INVESTIGATION OF DAMAGE ON STRUCTURAL CONNECTIONS OF ARAKAWA WANGAN STEEL TRUSS BRIDGE DURING THE 2011 OFF THE PACIFIC COAST OF TOHOKU EARTHQUAKE

DOI Web Site 6 References
  • FUJII Miku
    JFEエンジニアリング(株) 社会インフラ本部（研究当時：横浜国立大学都市イノベーション学府都市地域社会専攻）
  • FUJINO Yozo
    横浜国立大学先端高等科学研究院
  • SIRINGORINGO Dionysius Manly
    横浜国立大学先端高等科学研究院
  • NAMIKAWA Kenji
    首都高速道路(株)東京西局
  • YABE Masaaki
    (一財)首都高速道路技術センター（研究当時：(株)長大）
  • SHEN Chi
    (株)長大 第2構造技術部

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Other Title
  • 東北地方太平洋沖地震による荒川湾岸橋の接合部損傷の解明

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<p> Several structural connections of the Arakawa-Wangan (steel truss bridge in the Tokyo Metropolitan Expressway) were ruptured or heavily deformed during the main shock of 2011 Great East Japan Earthquake. The bridge, built in 1978, was under seismic retrofit at the time of the earthquake, but the seismic retrofit plan did not include retrofit of structural connections. In this study, we perform seismic response analysis of the bridge using frame model followed by detailed finite element analysis of the damaged connections and their adjacent structural members. Results of analyses are consistent with the observed damage on connections. This study emphasizes the importance of performance evaluation of steel truss bridge structural connections in the seismic design.</p>

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