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基于CFD与风洞试验的边主梁涡振气动措施

黄林 董佳慧 廖海黎 蒲诗雨 王骑

黄林, 董佳慧, 廖海黎, 蒲诗雨, 王骑. 基于CFD与风洞试验的边主梁涡振气动措施[J]. 西南交通大学学报, 2024, 59(2): 343-352. doi: 10.3969/j.issn.0258-2724.20220208
引用本文: 黄林, 董佳慧, 廖海黎, 蒲诗雨, 王骑. 基于CFD与风洞试验的边主梁涡振气动措施[J]. 西南交通大学学报, 2024, 59(2): 343-352. doi: 10.3969/j.issn.0258-2724.20220208
HUANG Lin, DONG Jiahui, LIAO Haili, PU Shiyu, WANG Qi. Vortex-Induced Vibration (VIV) Aerodynamic Measures of Girder with Side Beam Based on Computation Fluid Dynamics (CFD) and Wind Tunnel Test[J]. Journal of Southwest Jiaotong University, 2024, 59(2): 343-352. doi: 10.3969/j.issn.0258-2724.20220208
Citation: HUANG Lin, DONG Jiahui, LIAO Haili, PU Shiyu, WANG Qi. Vortex-Induced Vibration (VIV) Aerodynamic Measures of Girder with Side Beam Based on Computation Fluid Dynamics (CFD) and Wind Tunnel Test[J]. Journal of Southwest Jiaotong University, 2024, 59(2): 343-352. doi: 10.3969/j.issn.0258-2724.20220208

基于CFD与风洞试验的边主梁涡振气动措施

doi: 10.3969/j.issn.0258-2724.20220208
基金项目: 国家自然科学基金(51778547,51678508)
详细信息
    作者简介:

    黄林(1994—),男,博士研究生,研究方向为桥梁与隧道工程,E-mail:huanglin@my.swjtu.edu.cn

    通讯作者:

    王骑(1980—),男,副教授,研究方向为大跨度桥梁抗风,E-mail:wangchee_wind@swjtu.edu.cn

  • 中图分类号: U441.3

Vortex-Induced Vibration (VIV) Aerodynamic Measures of Girder with Side Beam Based on Computation Fluid Dynamics (CFD) and Wind Tunnel Test

  • 摘要:

    为能够快捷且经济地完成开口类钝体桥梁断面涡振制振气动措施的选型,以一座边主梁叠合梁斜拉桥为背景,采用“CFD (computation fluid dynamics)数值模拟选型 + 风洞试验验证”的思路对其涡振制振气动措施选型进行研究. 该桥原设计主梁断面在常遇风速下存在显著涡激振动,为完成气动措施的初步选型,采用CFD数值计算对原设计断面的流场进行模拟,通过研究原设计断面的旋涡脱落状态确定主要旋涡抑制对象,进而有针对性地模拟了3种气动措施(下中央稳定板、导流板与风嘴)对主要脱落旋涡的抑制作用,通过将各断面旋涡脱落状态与三分力系数进行对比分析,得到各断面涡振性能的相对优劣关系,并最终选取风嘴与下中央稳定板结合而成的组合气动措施进行风洞验证试验. 试验结果表明:该组合气动措施能够有效抑制梁体在各风攻角下的涡激振动,且在 +5° 风攻角下,通过风洞试验得到的导流板、下中央稳定板、风嘴组合气动3种措施对原设计断面涡振振幅的减小作用依此递增,分别为2.7%、27.7%与87.4%,制振能力高低关系与数值模拟结果相一致;本次数值模拟结果符合预期要求,未来可针对不同类型桥梁断面进一步扩展数值模拟与风洞试验结果对比的数据集,以期更为准确、快捷地完成气动措施的选型.

     

  • 图 1  边主梁叠合梁断面示意图(单位:cm)

    Figure 1.  Section of composite girder with side beam (unit: cm)

    图 2  节段模型

    Figure 2.  Section model

    图 3  原设计边主梁涡振响应

    Figure 3.  VIV responses of original girder with side beam

    图 4  CFD数值模拟计算域设置

    Figure 4.  Settings of CFD numerical simulation calculation domain

    图 5  YSDM断面$ {C}_{\mathrm{L}}\left(t\right) $频谱

    Figure 5.  $ {C}_{\mathrm{L}}\left(t\right) $ spectrum of YSDM section

    图 6  YSDM断面瞬时涡量演化

    Figure 6.  Transient vorticity evolution around YSDM section

    图 7  XWDM断面示意(单位:cm)

    Figure 7.  XWDM section (unit: cm)

    图 8  XWDM断面瞬时涡量演化

    Figure 8.  Transient vorticity evolution around XWDM section

    图 9  DLBDM断面示意(单位:cm)

    Figure 9.  DLBDM section (unit: cm)

    图 10  DLBDM断面瞬时涡量演化图

    Figure 10.  Transient vorticity evolution around DLBDM section

    图 11  FZXWDM断面示意(单位:cm)

    Figure 11.  FZXWDM section (unit: cm)

    图 12  FZXWDM断面瞬时涡量演化

    Figure 12.  Transient vorticity evolution around FZXWDM section

    图 13  各断面$ {C}_{\mathrm{L}}(t) $时程

    Figure 13.  $ {C}_{\mathrm{L}}(t) $ time history of each section

    图 14  FZXWDM断面涡振响应

    Figure 14.  VIV response of FZXWDM section

    图 15  +5° 风攻角下各断面最大竖向涡振响应(ξh=0.34%)

    Figure 15.  Maximum vertical VIV response of each section under wind attack angle of +5° (ξh = 0.34%)

    表  1  主要模态参数

    Table  1.   Main modal parameters

    振型频率/Hz等效质量/
    (kg·m−1
    等效质量惯性矩/
    (kg·m2·m−1
    一阶对称竖弯0.4230148
    一阶反对称竖弯0.5544565
    一阶对称扭转0.793031103
    一阶反对称扭转1.192297427
    下载: 导出CSV

    表  2  节段模型试验参数

    Table  2.   Section model test parameters

    参数名称 高度/m 宽度/m 单位长度
    质量/(kg·m−1
    单位长度质量
    惯性矩/(kg·m2·m−1
    竖弯
    频率/Hz
    扭转
    频率/Hz
    竖弯风速比 扭转风速比
    实桥值 3.65 27 30148 3031103 0.42 0.79
    缩尺比 1/50 1/50 1/502 1/504 8.34 7.55
    模型值 0.07 0.54 12.06 0.49 2.50 5.20
    下载: 导出CSV

    表  3  计算断面说明

    Table  3.   Description of calculated section

    断面编号计算断面说明
    YSDM原设计断面
    XWDM设置 343 cm 下中央稳定板
    DLBDM设置 180 cm 倾斜角 30° 导流板
    FZXWDM设置 350 cm 风嘴、343 cm 下中央稳定板
    下载: 导出CSV

    表  4  不同网格数量计算结果

    Table  4.   Calculation results of different mesh numbers

    网格规格底层网格
    厚度/mm
    网格数目/
    (×104 个)
    St1St2误差/%
    Rough0.05210.0810.09413.8
    Medium0.03380.0870.0947.4
    Fine0.01590.0890.0945.3
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-03-22
  • 修回日期:  2022-06-08
  • 网络出版日期:  2023-08-14
  • 刊出日期:  2022-07-07

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