DAMPING CHARACTERISTICS OF A PC CABLE-STAYED BRIDGE BASED ON MEASURED STRONG MOTION RECORDS

DOI 6 References

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Other Title
  • 強震記録に基づくＰＣ斜張橋の減衰特性

Abstract

It is known that damping ratios of cable stayed bridges evaluated from forced excitation tests are generally very small. Because response amplitudes developed during forced excitation tests are very small due to limited excitation force, it is considered that the small damping ratios determined from forced excitation tests are attributed to the small oscillation amplitudes. However few clarifications have been conducted for damping ratios of cable stayed bridges during actual significant earthquakes. This paper analyzed damping ratios of a PC cable stayed bridge (Tokachi Bridge) based on measured response during the 2003 Tokachi-Oki earthquake (M8.0). It was found from the analysis that the damping ratios which provide the best correlation to the measured response were 10-6%. It was also found that the damping ratios have component and time dependency.

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Details 詳細情報について

  • CRID
    1390001205254706944
  • NII Article ID
    130004467184
  • DOI
    10.2208/jsceja.65.426
  • ISSN
    18806023
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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