Study on seismic retrofit of a steel cable-stayed bridge considering local plasticity of main girder

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Other Title
  • 鋼斜張橋の耐震補強検討において主桁が塑性化した場合の基礎的検討

Abstract

This paper presents a basic study on seismic retrofit of an existing steel cable-stayed bridge. A flexible structure such as steel cable-stayed bridge behaves three dimensionally during a big earthquake, therefore biaxial bending phenomenon occurs in main girder and pier. Therefore firstly nonlinear analysis using fiber models is conducted, and results are compared to those obtained by usual frame structure analysis. After installing the damper and other devices for seismic retrofit, some part of main girder remain in plastic region during large earthquake. Therefore secondly residual displacement of girder in plastic region is obtained by static finite element analysis, and using the numerical results seismic safety of the bridge is discussed.

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Details 詳細情報について

  • CRID
    1390001205284902784
  • NII Article ID
    130004503592
  • DOI
    10.11532/structcivil.54a.324
  • ISSN
    1881820X
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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