斜拉索风雨激振的数值模拟研究
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摘要
为研究斜拉索风雨激振的发生机理,该文对带固定水线的斜拉索二维模型进行CFD数值模拟,得到了气动力系数随上水线位置变化的曲线,并分析了上水线对拉索气动特性的影响。将CFD计算得到的气动力系数曲线代入风雨激振二维两自由度模型中进行数值求解,实现了对风雨激振现象的完全数值模拟。然后对比风雨激振人工模拟降雨风洞试验测得的结果,分析了平均风速和脉动风速的影响。研究表明,上水线的振荡是诱发风雨激振的主要原因,且考虑风速脉动后的斜拉索振动及水线振荡更接近试验结果。
In order to investigate the mechanism of rain-wind-induced vibrations(RWIV),a series of 2-dimensional CFD models of stay cables with fixed upper rivulets were computed to obtain the curves of aerodynamic coefficients vs.the positions of upper rivulets.The influence on cable aerodynamic characteristics caused by the upper rivulet was analyzed.Correspondingly,a 2-dimensional 2DOF model of RWIV was established and a numerical program employing the curves from CFD computation achieved the complete computer-based stimulation of RWIV.By contrast with the results from an artificial rainfall wind tunnel test,the mean wind velocity and turbulence intensity were studied based on the numerical stimulation.The study shows that the oscillation of the upper rivulet is the reason causing RMIV.The simulation results also indicate that the response of the stay cable in RWIV is close to that of wind tunnel test results when the fluctuating wind is considered.
In order to investigate the mechanism of rain-wind-induced vibrations(RWIV),a series of 2-dimensional CFD models of stay cables with fixed upper rivulets were computed to obtain the curves of aerodynamic coefficients vs.the positions of upper rivulets.The influence on cable aerodynamic characteristics caused by the upper rivulet was analyzed.Correspondingly,a 2-dimensional 2DOF model of RWIV was established and a numerical program employing the curves from CFD computation achieved the complete computer-based stimulation of RWIV.By contrast with the results from an artificial rainfall wind tunnel test,the mean wind velocity and turbulence intensity were studied based on the numerical stimulation.The study shows that the oscillation of the upper rivulet is the reason causing RMIV.The simulation results also indicate that the response of the stay cable in RWIV is close to that of wind tunnel test results when the fluctuating wind is considered.
引文
[1]Hikami Y,Shiraishi N.Rain-wind induced vibrations ofcables in cable stayed bridges[J].Journal of WindEngineering and Industrial Aerodynamics,1988,29:409―418.
[2]陈政清,柳成荫,倪一清,等.洞庭湖大桥拉索风雨振中的风场参数[J].铁道科学与工程学报,2004,1(1):52―57.Chen Zhengqing,Liu Chengyin,Ni Yiqing,et al.Windparameters in wind-rain induced stay vibration onDongting Lake Bridge[J].Journal of Railway Scienceand Engineering,2004,1(1):52―57.(in Chinese)
[3]胡建华,王修勇,陈政清.斜拉索风雨振响应特性[J].中国公路学报,2006,19(3):41―48.Hu Jianhua,Wang Xiuyong,Chen Zhengqing.Responsecharacteristics of wind-rain induced vibration of staycables[J].China Journal of Highway and Transport,2006,19(3):41―48.(in Chinese)
[4]Zuo D,Jones N P,Main J A.Field observation of vortex-and rain-wind-induced stay-cable vibrations in athree-dimensional environment[J].Journal of WindEngineering and Industrial Aerodynamics,2008,95:303―328.
[5]Zuo D,Jones N P.Interpretation of field observations ofwind-and rain-wind-induced stay cable vibrations[J].Journal of Wind Engineering and IndustrialAerodynamics,2010,98:73―87.
[6]Yamaguichi H.Analytical study on growth mechanismof rain vibration of cables[J].Journal of WindEngineering and Industrial Aerodynamics,1990,33:73―80.
[7]Bosdogianni A,Olivari D.Wind and rain-inducedoscillations of cables of stayed bridges[J].Journal ofWind Engineering and Industrial Aerodynamics,1996,64:171―185.
[8]Matsumoto M,Yagi T,Shigemura Y,et al.Vortex-induced cable vibration of cable-stayed bridges athigh reduced wind velocity[J].Journal of WindEngineering and Industrial Aerodynamics,2001,89:633―647.
[9]Matsumoto M,Yagi T,Goto M,et al.Rain-wind-inducedvibration of inclined cables at limited high reduced windvelocity region[J].Journal of Wind Engineering andIndustrial Aerodynamics,2003,91:1―12.
[10]Gu M,Lu Q.Theoretical analysis of wind-rain inducedvibration of cables of cable-stayed bridges[J].Journal ofWind Engineering,2001,89:125―128.
[11]顾明,杜晓庆.带人工雨线的斜拉桥拉索模型测压试验研究[J].空气动力学学报,2005,23(4):419―424.Gu Ming,Du Xiaoqing.Testing study on wind pressuredistributions of stayed cables with an artificial rivulet[J].Acta Aerodynamic Sinica,2005,23(4):419―424.(inChinese)
[12]顾明,李寿英,杜晓庆.斜拉桥拉索风雨激振理论模型和机理研究[J].空气动力学学报,2007,25(2):169―174.Gu Ming,Li Shouying,Du Xiaoqing.Testing study onwind pressure distributions of stayed cables with a fixedartificial rivulet[J].Acta Aerodynamic Sinica,2007,25(2):169―174.(in Chinese)
[13]陈文礼.斜拉索风雨激振的试验研究与数值模拟[D].哈尔滨:哈尔滨工业大学,2009.Chen Wenli.Experimental investigation and numericalsimulation of rain-wind-induced vibration of stay cables[D].Harbin:Harbin Institute of Technology,2009.(inChinese)
[14]陈文礼,李惠,李凤臣.斜拉索风雨激振水线的超声波测试系统[J].地震工程与工程振动,2009,29(1):139―145.Chen Wenli,Li Hui,Li Fengchen.An ultrasonictransmission thickness measurement system for rivuleton the stay cable under rain-wind-induced vibration[J].Journal of Earthquake Engineering and EngineeringVibration,2009,29(1):139―145.(in Chinese)
[15]Li F C,Chen W L,Li H,et al.An ultrasonic transmissionthickness measurement system for study of water rivuletscharacteristics of stay cables suffering fromwind-rain-induced vibration[J].Sensors&Actuator:A.Physical,2010(159):12―23.
[16]Peil U,Nahrath N.Modeling of rain-wind inducedvibrations[J].Wind and Structures,2003,6(1):41―52.
[17]Xu Y L,Wang L Y.Analytical study of wind-raininduced cable vibration:SDOF model[J].Journal ofWind Engineering and Industrial Aerodynamics,2003,91:27―40.
[18]顾明,刘慈军,徐幼麟,项海帆.带人工雨线的拉索在风激励下的响应[J].应用数学和力学,2002,23(10):1047―1054.Gu Ming,Liu Cijun,Xu Youlin,Xiang Haifan.Responsecharacteristics of wind excited cables with artificialrivulet[J].Applied Mathematics and Mechanics,2002,23(10):1047―1054.(in Chinese)
[19]刘庆宽.用LES方法对斜拉桥斜拉索风雨振的机理的研究[J].工程力学,2007,24(9):134―139.Liu Qingkuan.Study on the mechanism of rain-windinduced vibration of cables on cable-stayed bridge usingLES[J].Engineering Mechanics,2007,24(9):134―139.(in Chinses)
[20]刘庆宽,张峰,乔富贵.轴向流对斜拉索气动稳定性影响的试验研究[J].石家庄铁道学院学报(自然科学版),2008,21(4):16―19.Liu Qingkuan,Zhang Feng,Qiao Fugui.Effect of axialflow on rain-wind induced vibration of stay-cables[J].Journal of Shijiazhuang Railway Institute(NaturalScience),2008,21(4):16―19.(in Chinses)
[21]Nahrath N.Modellierung regen-wind-induzierterschwingungen[D].Braunschweig:TechnischeUniversit t Braunschweig,2003.
[22]James D F,Truong Q S.Wind load on cylinder withspanwise protrusion[J].Journal of the EngineeringMechanics Division,ASCE,1972,98:1573―1589.
[23]李寿英,顾明.带固定人工水线拉索绕流的数值模拟[J].同济大学学报(自然科学版),2004,32(10):1334―1338.Li Shouying,Gu Ming.Numerical simulation of flowaround stayed cable with artificial rivulet[J].Journal ofTongji University(Natural Science),2004,32(10):1334―1338.(in Chinese)
[24]顾明,杜晓庆.模拟降雨条件下斜拉桥拉索风雨激振及控制的实验研究[J].土木工程学报,2004,37(7):101―105.Gu Ming,Du Qiaoqing.A testing study on rain-windinduced cable vibration and its control of cable-stayedbridges under simulated rain[J].China Civil EngineeringJournal,2004,37(7):101―105.(in Chinese)时间/s水线角度上γ(°)/
[2]陈政清,柳成荫,倪一清,等.洞庭湖大桥拉索风雨振中的风场参数[J].铁道科学与工程学报,2004,1(1):52―57.Chen Zhengqing,Liu Chengyin,Ni Yiqing,et al.Windparameters in wind-rain induced stay vibration onDongting Lake Bridge[J].Journal of Railway Scienceand Engineering,2004,1(1):52―57.(in Chinese)
[3]胡建华,王修勇,陈政清.斜拉索风雨振响应特性[J].中国公路学报,2006,19(3):41―48.Hu Jianhua,Wang Xiuyong,Chen Zhengqing.Responsecharacteristics of wind-rain induced vibration of staycables[J].China Journal of Highway and Transport,2006,19(3):41―48.(in Chinese)
[4]Zuo D,Jones N P,Main J A.Field observation of vortex-and rain-wind-induced stay-cable vibrations in athree-dimensional environment[J].Journal of WindEngineering and Industrial Aerodynamics,2008,95:303―328.
[5]Zuo D,Jones N P.Interpretation of field observations ofwind-and rain-wind-induced stay cable vibrations[J].Journal of Wind Engineering and IndustrialAerodynamics,2010,98:73―87.
[6]Yamaguichi H.Analytical study on growth mechanismof rain vibration of cables[J].Journal of WindEngineering and Industrial Aerodynamics,1990,33:73―80.
[7]Bosdogianni A,Olivari D.Wind and rain-inducedoscillations of cables of stayed bridges[J].Journal ofWind Engineering and Industrial Aerodynamics,1996,64:171―185.
[8]Matsumoto M,Yagi T,Shigemura Y,et al.Vortex-induced cable vibration of cable-stayed bridges athigh reduced wind velocity[J].Journal of WindEngineering and Industrial Aerodynamics,2001,89:633―647.
[9]Matsumoto M,Yagi T,Goto M,et al.Rain-wind-inducedvibration of inclined cables at limited high reduced windvelocity region[J].Journal of Wind Engineering andIndustrial Aerodynamics,2003,91:1―12.
[10]Gu M,Lu Q.Theoretical analysis of wind-rain inducedvibration of cables of cable-stayed bridges[J].Journal ofWind Engineering,2001,89:125―128.
[11]顾明,杜晓庆.带人工雨线的斜拉桥拉索模型测压试验研究[J].空气动力学学报,2005,23(4):419―424.Gu Ming,Du Xiaoqing.Testing study on wind pressuredistributions of stayed cables with an artificial rivulet[J].Acta Aerodynamic Sinica,2005,23(4):419―424.(inChinese)
[12]顾明,李寿英,杜晓庆.斜拉桥拉索风雨激振理论模型和机理研究[J].空气动力学学报,2007,25(2):169―174.Gu Ming,Li Shouying,Du Xiaoqing.Testing study onwind pressure distributions of stayed cables with a fixedartificial rivulet[J].Acta Aerodynamic Sinica,2007,25(2):169―174.(in Chinese)
[13]陈文礼.斜拉索风雨激振的试验研究与数值模拟[D].哈尔滨:哈尔滨工业大学,2009.Chen Wenli.Experimental investigation and numericalsimulation of rain-wind-induced vibration of stay cables[D].Harbin:Harbin Institute of Technology,2009.(inChinese)
[14]陈文礼,李惠,李凤臣.斜拉索风雨激振水线的超声波测试系统[J].地震工程与工程振动,2009,29(1):139―145.Chen Wenli,Li Hui,Li Fengchen.An ultrasonictransmission thickness measurement system for rivuleton the stay cable under rain-wind-induced vibration[J].Journal of Earthquake Engineering and EngineeringVibration,2009,29(1):139―145.(in Chinese)
[15]Li F C,Chen W L,Li H,et al.An ultrasonic transmissionthickness measurement system for study of water rivuletscharacteristics of stay cables suffering fromwind-rain-induced vibration[J].Sensors&Actuator:A.Physical,2010(159):12―23.
[16]Peil U,Nahrath N.Modeling of rain-wind inducedvibrations[J].Wind and Structures,2003,6(1):41―52.
[17]Xu Y L,Wang L Y.Analytical study of wind-raininduced cable vibration:SDOF model[J].Journal ofWind Engineering and Industrial Aerodynamics,2003,91:27―40.
[18]顾明,刘慈军,徐幼麟,项海帆.带人工雨线的拉索在风激励下的响应[J].应用数学和力学,2002,23(10):1047―1054.Gu Ming,Liu Cijun,Xu Youlin,Xiang Haifan.Responsecharacteristics of wind excited cables with artificialrivulet[J].Applied Mathematics and Mechanics,2002,23(10):1047―1054.(in Chinese)
[19]刘庆宽.用LES方法对斜拉桥斜拉索风雨振的机理的研究[J].工程力学,2007,24(9):134―139.Liu Qingkuan.Study on the mechanism of rain-windinduced vibration of cables on cable-stayed bridge usingLES[J].Engineering Mechanics,2007,24(9):134―139.(in Chinses)
[20]刘庆宽,张峰,乔富贵.轴向流对斜拉索气动稳定性影响的试验研究[J].石家庄铁道学院学报(自然科学版),2008,21(4):16―19.Liu Qingkuan,Zhang Feng,Qiao Fugui.Effect of axialflow on rain-wind induced vibration of stay-cables[J].Journal of Shijiazhuang Railway Institute(NaturalScience),2008,21(4):16―19.(in Chinses)
[21]Nahrath N.Modellierung regen-wind-induzierterschwingungen[D].Braunschweig:TechnischeUniversit t Braunschweig,2003.
[22]James D F,Truong Q S.Wind load on cylinder withspanwise protrusion[J].Journal of the EngineeringMechanics Division,ASCE,1972,98:1573―1589.
[23]李寿英,顾明.带固定人工水线拉索绕流的数值模拟[J].同济大学学报(自然科学版),2004,32(10):1334―1338.Li Shouying,Gu Ming.Numerical simulation of flowaround stayed cable with artificial rivulet[J].Journal ofTongji University(Natural Science),2004,32(10):1334―1338.(in Chinese)
[24]顾明,杜晓庆.模拟降雨条件下斜拉桥拉索风雨激振及控制的实验研究[J].土木工程学报,2004,37(7):101―105.Gu Ming,Du Qiaoqing.A testing study on rain-windinduced cable vibration and its control of cable-stayedbridges under simulated rain[J].China Civil EngineeringJournal,2004,37(7):101―105.(in Chinese)时间/s水线角度上γ(°)/
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