| 桥墩墩型对平衡冰塞水位影响的试验研究 |
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| 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. |
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| 作者姓名： | 王军 黄宁静 吴一帆 程铁杰 |
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| 作者单位： | 合肥工业大学土木与水利工程学院, 安徽 合肥 230009 |
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| 基金项目： | 国家自然科学基金资助项目（51379054） |
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| 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。
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| 关 键 词： | 桥墩墩型 平衡冰塞水位 弗劳德数 冰塞壅水 试验研究 |
| 收稿时间： | 2018-01-31 |
Impacts of bridge-pier types on balancing ice jams: an experimental study |
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| 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. |
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| Authors: | WANG Jun HUANG Ningjing WU Yifan CHENG Tiejie |
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| Institution: | School of Civil Engineering, Hefei University of Technology, Hefei 230009, China |
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| 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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| Keywords: | bridge-piers type balance ice jam stage Froude number ice jam backwater experimental study |
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