Development of Channel Wall Loading Method to Evaluate Structural Safety of Concrete Open Channels

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Other Title
  • 水路壁載荷法によるコンクリート開水路の構造的安全性評価手法の開発
  • 水路壁載荷法によるコンクリート開水路の構造的安全性評価手法の開発 : コンクリート二次製品のフリュームを用いた水路壁載荷法の基礎的研究
  • スイロヘキサイカホウ ニ ヨル コンクリートカイスイロ ノ コウゾウテキ アンゼンセイ ヒョウカ シュホウ ノ カイハツ : コンクリート ニジ セイヒン ノ フリューム オ モチイタ スイロヘキサイカホウ ノ キソテキ ケンキュウ
  • －Basic studies on channel wall loading method applying to factory-made concrete flumes－
  • ― コンクリート二次製品のフリュームを用いた水路壁載荷法の基礎的研究 ―

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Abstract

<p>In order to apply repair and reinforcement methods to aged concrete open channels, it is necessary to evaluate their remaining structural strength. In this paper, we suggest the channel wall loading method as a method for evaluating the structural strength of open channels. The channel wall loading method is designed to evaluate the state of deterioration using the slope of the load-deflection relationship. The loading device installed on the top of the side walls of a channel applies load on side walls, and deflection caused by the load is measured by the deflection measurement device. The loading device is capable of outer-side loading (inward loading) and also of inner-side loading (outward loading), and the deflection measurement device can measure deflection in both directions. In this study, these devices are applied to factory-made concrete flumes and the slopes of load-deflection relationships are obtained for both loading directions.</p><p>As the result, little difference in slopes is observed in the elastic region. Furthermore, since the measured amount of deflection approximates to its theoretical amount, it is concluded that the amount of deflection by the channel wall loading method can be evaluated by using a theoretical method.</p>

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