| SCOUR MITIGATION AT BRIDGE PIERS USING SACRIFICIAL PILES |
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| 作者姓名： | M. Anisul HAQUE Md. Munsur RAHMAN G.M. Tarekul ISLAM M. Asad HUSSAIN |
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| 作者单位： | Prof.Institute of Water and Flood Management (IWFM) Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh，Assoc. Prof.Institute of Water and Flood Management (IWFM) Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh，Assoc. Prof.Institute of Water and Flood Management (IWFM) Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh，Lecturer，Institute of Water and Flood Management (IWFM) Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh |
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| 摘 要： | To mitigate scour around bridge piers, sacrificial piles are economic method where natural processes are involved. The arrangement should be such that scoured materials from the sacrificial piles should have enough volume to fill the scour hole created upstream of the pier in such a way that sediments are trapped inside the scour hole. This concept differs from earlier study made with sacrificial piles that mainly deals to reduce the strength of horseshoe vortex. To determine the effect of sacrificial piles for scour mitigation, alternative arrangements of piles were tested in front of a rectangular pier under clear-water condition and found that when the group of piles is placed at a distance of twice the projected width of the pier, for which percentage of blockage of the pier width is 60%, the scour volume can be reduced upto 61% while the maximum scour depth can be reduced upto 50%.
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| 关 键 词： | 桥墩 水流冲刷 减缓方法 消能桩 优化排列 |
| 收稿时间： | 2004-06 |
| 修稿时间： | 2006-10 |
SCOUR MITIGATION AT BRIDGE PIERS USING SACRIFICIAL PILES |
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| M. Anisul HAQUE Md. Munsur RAHMAN G.M. Tarekul ISLAM M. Asad HUSSAIN.SCOUR MITIGATION AT BRIDGE PIERS USING SACRIFICIAL PILES[J].International Journal of Sediment Research,2007,22(1):49-59. |
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| Authors: | M Anisul HAQUE Md Munsur RAHMAN GM Tarekul ISLAM M Asad HUSSAIN |
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| Abstract: | To mitigate scour around bridge piers, sacrificial piles are economic method where natural processes are involved. The arrangement should be such that scoured materials from the sacrificial piles should have enough volume to fill the scour hole created upstream of the pier in such a way that sediments are trapped inside the scour hole. This concept differs from earlier study made with sacrificial piles that mainly deals to reduce the strength of horseshoe vortex. To determine the effect of sacrificial piles for scour mitigation, alternative arrangements of piles were tested in front of a rectangular pier under clear-water condition and found that when the group of piles is placed at a distance of twice the projected width of the pier, for which percentage of blockage of the pier width is 60%, the scour volume can be reduced upto 61% while the maximum scour depth can be reduced upto 50%. |
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| Keywords: | Scour mitigation Bridge pier Sacrificial pile Optimum arrangement |
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