Ultimate strength and fatigue life of cable-stayed bridges considering cable corrosion

DOI

Bibliographic Information

Other Title
  • ケーブル腐食を考慮した斜張橋の終局強度および疲労寿命

Abstract

<p>Cable corrosion significantly decreases the ultimate and fatigue strength of cable-stayed bridges, which was parametrically studied with three different span lengths and different corrosion levels. The ultimate strength of the healthy bridge models was about 2.5 of the design loads, which satisfied the required safety of 1.7. Whereas, the ultimate strength lowered by about 25% as the loss of cross-sectional area increased due to corrosion. The elongation also decreases due to corrosion. The ultimate strength was found to sharply drop when the elongation became 1.0%. The fatigue strength of stays was studied taking a 500kN heavy lorry as the representative load. The fatigue strength sharply lowers as corrosion progresses and the severely corrode anchor cable becomes less than 4% of the healthy one.</p>

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Details 詳細情報について

  • CRID
    1390569181327446784
  • NII Article ID
    130008025983
  • DOI
    10.11532/structcivil.67a.1
  • ISSN
    1881820X
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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