Statistical Characteristics of Profile Change Quantity of Rubble Mound Revetment

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  • 捨石護岸の断面変形量の統計的特性について
  • ステイシ ゴガン ノ ダンメン ヘンケイリョウ ノ トウケイテキ トクセイ ニ ツイテ

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As a first step to develop a probabilistic model for the maintenance and repair of revetment, laboratory experiments were conducted to investigate the statistical characteristics of profile change quantity. Ten wave flumes were constructed in a multi-directional wave basin and a conventional rubble mound revetment was placed in each flume. A total of 2700 data of the revetment profile were obtained. The statistical characteristics of the normalized eroded area S were investigated. The frequency distributions of S were approximated by the normal distribution and the standard deviation of S increased as the damage of the revetment progressed. The mean and standard deviation of the increment of S did not change much as the total number of wave became large.

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