A study on performance recovery mechanism of patch plate repair for the corroded girder end of steel girder

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  • 腐食した鋼桁端部に対する当て板補修の性能回復機構に関する研究
  • フショク シタ コウ ケタ タンブ ニ タイスル アテ ハン ホシュウ ノ セイノウ カイフク キコウ ニ カンスル ケンキュウ

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<p>Corrosion damage is often found at the steel girder end, which leads to a decrease in load carrying capacity. This paper investigates the performance recovery mechanism of the corroded steel girder end with patch plates fastened by high strength bolts through numerical analysis. Firstly, the residual loading capacity of steel girder end with corrosion at the web or vertical stiffeners is evaluated for different corrosion levels and compared to that of intact steel girder end. Secondly, the performance recovery effect and failure mode of corroded steel girder end repaired by patch plates are examined. Moreover, this study investigates the influence of difference in the patch plate shapes on the performance recovery by the patch plate repair.</p>

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