水动力作用下流冰撞击闸墩的动力响应研究

杨腾腾 贡力 董洲全 杜云飞 崔越

杨腾腾, 贡力, 董洲全, 杜云飞, 崔越. 水动力作用下流冰撞击闸墩的动力响应研究[J]. 爆炸与冲击, 2023, 43(12): 123901. doi: 10.11883/bzycj-2023-0113
引用本文: 杨腾腾, 贡力, 董洲全, 杜云飞, 崔越. 水动力作用下流冰撞击闸墩的动力响应研究[J]. 爆炸与冲击, 2023, 43(12): 123901. doi: 10.11883/bzycj-2023-0113
YANG Tengteng, GONG Li, DONG Zhouquan, DU Yunfei, CUI Yue. Dynamic response of flowing ice colliding with a sluice pier under hydrodynamic action[J]. Explosion And Shock Waves, 2023, 43(12): 123901. doi: 10.11883/bzycj-2023-0113
Citation: YANG Tengteng, GONG Li, DONG Zhouquan, DU Yunfei, CUI Yue. Dynamic response of flowing ice colliding with a sluice pier under hydrodynamic action[J]. Explosion And Shock Waves, 2023, 43(12): 123901. doi: 10.11883/bzycj-2023-0113

水动力作用下流冰撞击闸墩的动力响应研究

doi: 10.11883/bzycj-2023-0113
基金项目: 国家自然科学基金(51969011);甘肃省科技计划资助项目(21JR7RA301);甘肃省黄河水环境重点实验室开放基金(21YRWEK003);甘肃省教育厅优秀研究生“创新之星”项目(2023CXZX-600)
详细信息
    作者简介:

    杨腾腾(1997- ),男,硕士研究生,2680673647@qq.com

    通讯作者:

    贡 力(1977- ),男,博士,教授,博士生导师,gongl@mail.lzjtu.cn

  • 中图分类号: O352; TV672

Dynamic response of flowing ice colliding with a sluice pier under hydrodynamic action

  • 摘要: 高寒地区河冰撞击河道的闸墩结构会产生极端冰载荷和冰激振动,水的动力效应使得碰撞过程更加复杂。采用任意拉格朗日-欧拉流固耦合方法,考虑作用在流冰和闸墩表面的流体力,建立了水-冰-闸墩耦合模型,探究了偶然极端条件下冰-闸墩碰撞的力学特性,设计了冰-砼碰撞实验。结果表明:冰-砼碰撞实验中,撞击力的模拟结果与实验结果吻合良好;对流固耦合的水动力效应分析发现,水-冰-闸墩耦合模型能够体现水的流体特性,在流冰撞击闸墩近场逼近过程中,初始时刻水的动力效应能够增加流冰的动能,撞击楔入闸墩过程中,水介质形成一个瞬态高压力场,产生水垫效应吸收冰体部分动能,从而抑制流冰运动;在不同流冰体积和压缩强度工况下,闸墩结构所承受的冰力随着流冰体积的增大而增大,流冰压缩强度对冰力的影响较小,流冰损伤与闸墩结构响应主要集中在碰撞接触区,流冰撞击闸墩结构引起冰激振动,流冰体积对闸墩振动加速度的影响较大,相同体积的流冰随着压缩强度的增大,振动幅值差异不明显,表明流冰体积是影响冰-闸墩碰撞的关键参数。
  • 图  1  黄河冰凌撞击拦河闸

    Figure  1.  The Yellow River ice hit the barrage

    图  2  水平冰-闸墩碰撞有限元模型

    Figure  2.  Horizontal ice-sluice pier collision finite element model

    图  3  静水压力

    Figure  3.  Hydrostatic pressure

    图  4  冰-砼碰撞测试实验装置

    Figure  4.  Ice-concrete crash experimental rig

    图  5  最大等效应力云图

    Figure  5.  Contour of the maximum effective stress

    图  6  模拟和实验得到的撞击过程的应力时程曲线

    Figure  6.  Stress time history curves of impact processobtained by simulation and experiment

    图  7  不同冰厚下模拟与实验最大应力的对比

    Figure  7.  Comparison of simulated and experimental maximum stresses for different ice thicknesses

    图  8  不同时刻水流形态变化和y方向应变

    Figure  8.  Changes in water flow pattern and y-strain of water mediam at different times

    图  9  不同时刻的水流速度和冰速

    Figure  9.  Water velocity and ice velocity at different times

    图  10  不同工况下冰-闸墩撞击力曲线

    Figure  10.  Ice-sluice pier impact force curves under different working conditions

    图  11  冰-水耦合压力曲线

    Figure  11.  Ice-water coupling pressure curve

    图  12  不同体积和压缩强度下的力-时间历程

    Figure  12.  Force-time histories under different volumes and compression strengths

    图  13  不同体积和压缩强度与撞击力的关系

    Figure  13.  Relationships of the volume and compressive strength of ice with collision force

    图  14  不同体积和压缩强度工况下冰激振动的加速度-时间历程

    Figure  14.  Acceleration-time histories of ice-excited vibration under different volume and compression strength conditions

    图  15  流冰损伤和闸墩响应等效应力

    Figure  15.  Flowing ice damage and contours of pier response equivalent stress

    表  1  闸墩材料模型参数[21]

    Table  1.   Material parameters of sluice pier[21]

    混凝土材料参数
    密度/(kg·m–3 弹性模量/GPa 泊松比 初始抗拉极限/MPa 抗剪极限/MPa 断裂韧度/(N·m–1 剪切保持力
    2 500 30 0.2 4.02 21 0.14 0.03
    混凝土材料参数 钢筋材料参数
    体积黏度 压屈应力/MPa 弹性模量/GPa 屈服应力/MPa 硬化模量/GPa 失效应变
    0.72 42 200 335 10 0.75
    下载: 导出CSV

    表  2  冰材料模型参数

    Table  2.   Material parameters of ice

    密度/(kg·m–3 剪切模量/GPa 屈服应力/MPa 塑性硬化模量/GPa 体积模量/GPa 失效应变 截断应力/MPa
    910 2.2 2.1 4.26 5.26 7.69×10–4 –4.0
    下载: 导出CSV

    表  3  水和空气介质材料参数

    Table  3.   Material parameters of water and air media

    流体介质 密度/(kg·m–3 截断压力/Pa 黏度系数/(N·s·m–2 C0 C1 C2 C3 C4 C5 E0/MPa V0
    空气 1.184 5 –10 1.844×10−5 0 0 0 0 0.4 0.4 0.253 1.0
    998.21 –1.0×10−5 1.790×10−3 1.0133×105 2.25×109 1.0
    下载: 导出CSV

    表  4  流冰-闸墩碰撞工况

    Table  4.   Flowing ice -pier collision conditions

    工况 冰厚/m 冰温/℃ 冰速/(m·s–1 冰体积/m3 冰压缩强度/MPa
    1 0.3 –8 1.5 7.2 2.186
    2 0.3 –8 1.5 14.4 2.186
    3 0.3 –8 1.5 28.8 2.186
    4 0.3 –8 1.5 64.8 2.186
    5 0.3 –8 1.5 115.2 2.186
    6 0.3 –2 1.5 64.8 1.123
    7 0.3 –5 1.5 64.8 1.825
    8 0.3 –8 1.5 64.8 2.186
    9 0.3 –14 1.5 64.8 2.615
    10 0.3 –20 1.5 64.8 2.889
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-04-03
  • 修回日期:  2023-08-28
  • 网络出版日期:  2023-08-30
  • 刊出日期:  2023-12-12

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