3718 補強後のフォルソンダムテンタゲートの動的安定性と長期的安全運転指針(J13-3 流動励起振動3(直交流れによる振動等),J13 流体関連の騒音と振動)

概要

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Tainter gates are frequently used for water-level regulation in impoundment dams. One of the massive Tainter gates at the Folsom Dam failed during operation on July 17, 1995 in California. After the gate failure, the 4 remaining Folsom Tainter gates were reinforced. However, it is not clear whether the gates have the complete dynamic stability by the reinforcement. In order to prevent another gate failure, it is necessary to surely examine the dynamic stability of the reinforced Folsom Tainter gate. For this purpose, first, the natural vibration characteristics of the reinforced Folsom Tainter gate were revealed by the experimental modal analysis. Next, the essential dynamic instability of reinforced gate was calculated by using the measured natural vibration characteristics. Furthermore, based on the calculated results, the basic concepts for the completely stable long-term operation of the reinforced Folsom Tainter gate was examined.
社団法人日本機械学会の論文
2006-09-15