王军, 黄宁静, 吴一帆, 程铁杰. 桥墩墩型对平衡冰塞水位影响的试验研究[J]. 水科学进展, 2018, 29(4): 568-573. DOI: 10.14042/j.cnki.32.1309.2018.04.013
引用本文: 王军, 黄宁静, 吴一帆, 程铁杰. 桥墩墩型对平衡冰塞水位影响的试验研究[J]. 水科学进展, 2018, 29(4): 568-573. DOI: 10.14042/j.cnki.32.1309.2018.04.013
WANG Jun, HUANG Ningjing, WU Yifan, CHENG Tiejie. Impacts of bridge-pier types on balancing ice jams: an experimental study[J]. Advances in Water Science, 2018, 29(4): 568-573. DOI: 10.14042/j.cnki.32.1309.2018.04.013
Citation: WANG Jun, HUANG Ningjing, WU Yifan, CHENG Tiejie. Impacts of bridge-pier types on balancing ice jams: an experimental study[J]. Advances in Water Science, 2018, 29(4): 568-573. DOI: 10.14042/j.cnki.32.1309.2018.04.013

桥墩墩型对平衡冰塞水位影响的试验研究

Impacts of bridge-pier types on balancing ice jams: an experimental study

  • 摘要: 冰塞的出现使上游水位壅高,极易诱发凌洪灾害。桥墩墩型是影响桥墩附近冰塞壅水的重要因素之一。通过模型试验,对不同墩型影响下的平衡冰塞水位增值过程进行研究,并与无桥墩条件和明流情况进行了对比。试验结果表明:在试验冰水流量比条件下,当Fr≤0.145时,无桥墩条件下平衡冰塞水位增值小于有桥墩;当Fr>0.145时,无桥墩条件下平衡冰塞水位增值大于有桥墩;桥墩墩型引起的平衡冰塞水位增值由大到小排序为长方形桥墩、尖端形桥墩、圆端形桥墩和圆柱形桥墩。易发生冰塞的河段,建造桥梁时应当尽量选用圆柱形、圆端形桥墩。

     

    Abstract: The presence of ice jam increases the possibility of upstream water level, which can easily trigger ice jam flooding. Bridge pier types can significantly influence backwater heights. By using a series of experiments in the laboratory, the impact of bridge-pier types were investigated. It shows that, when Fr ≤ 0.145, the backwater height from ice jam without pier is smaller than that with piers. When Fr>0.145, the backwater height from ice jam without pier is larger than that with piers. The sequence of backwater height due to ice jam is the tip-shaped pier, rectangular pier, Round end-shaped pier, cylindrical pier from large to small. For rivers that have ice jam problems, it is better to choose cylindrical pier or round end-shaped pier.

     

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