供用中の鋼製起伏堰を対象とした実用的な更新計画の検討

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  • Study on the practical replacement strategies of the existing steel flap gate
  • キョウヨウ チュウ ノ コウセイ キフク セキ オ タイショウ ト シタ ジツヨウテキ ナ コウシン ケイカク ノ ケントウ

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<p>In this study, the practical replacement strategies of the existing steel flap gate used for more than 30 years was considered. A steel flap gate consists of three main members of steel gate panel, hydraulic cylinders, and hydraulic controllers. The deterioration prediction of steel gate panel was predicted from the result of the weathering test for 2 years at the existing steel flap gate. The prediction equation of the replacement probability in future of hydraulic cylinder and hydraulic controllers was calculated from results which analyzed replacement history statistically. And, the reduction of the replacement total cost of the existing steel flap gate was confirmed by some simulations of practical replacement strategies.</p>

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