本研究提出「柔性葉片環圈堆」保護工法，進行水槽實驗，探討「柔性葉片環圈堆」對橋墩抗沖刷之效果。實驗佈置分成四大類：Type A：橋墩沒有裝置保護工。Type B：橋墩周圍設有「柔性葉片環圈堆」。Type C：橋墩上游設有「柔性葉片環圈堆」。Type D：橋墩上下游均設有「柔性葉片環圈堆」。本研究詳細觀察各類佈置，對於橋墩沖刷現象之影響。從實驗中卻可清楚發現，在模擬洪水過橋情況下，Type：B, C, D能減少對橋基之沖刷及化解渦流的現象。且Type D在橋墩前擺放三角形柔性葉片環圈堆同時在橋墩後擺放U形柔性葉片環圈堆，其效果最佳。

This research proposed a device consisting of a stack of rings with soft blades to prevent pier scouring. The device was tested in the flume under the following four arrangements: Type A- pier has no scour prevention device; Type B-pier surrounded by a device consisting of a stack of rings with soft blades; Type C-a “stack of rings with soft blades” device placed before pier; Type D-a “stack of rings with soft blades” device placed before and after pier. Scour behavior was oberserved, as each configuration was subjected to a passing flood. All scour-prevention configurations effectively decrease scour and vortex phenomenon. But type D devices arrangement which before the pier included a triangular stack of rings with soft blades, while those placed after the pier consisted of a “U” type’s stack of rings with soft blades, does so most effectively.

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