Local Scouring around Twin Bridge Piers in Open-Channel Flows
Local Scouring around Twin Bridge Piers in Open-Channel Flows
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DOI：
10.1061/(asce)hy.1943-7900.0001154
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发表时间：
2016-09
影响因子：
2.4
通讯作者：
Hao Wang;Hongwu Tang;Liu Quanshuai;Wang Yao
中科院分区：
文献类型：
--
作者：
Hao Wang;Hongwu Tang;Liu Quanshuai;Wang Yao
摘要通过室内试验研究了明渠水流中双圆柱墩的局部冲刷。清水冲刷试验结果表明，不同墩距的上游墩周围冲刷坑与孤立墩周围冲刷坑基本相同。但下游墩周围的局部冲刷深度小于上游墩周围的局部冲刷深度。下游桥墩局部冲刷深度随流速的变化可分为四个区域：无冲刷区、同步冲刷区、过渡区和径向偏离区。最后，得到了径向偏差区的偏差与两墩间距的关系。
AbstractLaboratory experiments were carried out to investigate local scouring around twin cylindrical piers in open-channel flows. The experimental results of clear-water scouring around the twin piers show that the scour hole formed around the upstream pier at different pier spacing was almost the same as that around an isolated pier. However, the local scour depth around the downstream pier was less than that around the upstream pier. The local scour depth around the downstream pier with the velocity can be segregated into four regions: a no-scour region, synchronous-scouring region, transition region, and a radical-deviation region. Finally, a relationship between the deviation in the radical-deviation region and the spacing of the two piers was obtained.