CFD方法研究桥梁断面三分力系数的雷诺数效应
|
摘要
采用计算流体力学(CFD)方法计算与风荷载相关的物理量,应用FLUENT软件,对2种典型桥梁断面的三分力系数随雷诺数的变化进行数值模拟计算。建立了实际尺度的模型,选择了合理的网格划分形式,并分别使用3种不同的湍流模型,将数值计算结果与风洞试验结论进行了对比。结果表明:计算流体力学方法可以按照实际尺寸进行计算,以避免风洞试验只能进行缩尺试验的不足;且成本低、速度快、资料完备,具有模拟真实和理想条件的能力。
This paper used CFD to calculate the physical parameters correlated to wind load on bridge,discussed the variation of three component coefficients with Reynolds number based on two typical bridge sections with FLUENT software for numerical simulation,established actual scale models,by selecting reasonable type of meshing form.Three different turbulence models were used in the analysis,the numerical calculation results were compared with the one of wind tunnel test.The results show that CFD can be used to calculate bridge sections with actual size so as to avoid the insufficient of scale model in wind tunnel test.The calculation has the characteristic of low cost,high speed and complete materials,which can provide a platform to simulate the real and ideal condition.7 tabs,6 figs,15 refs.
This paper used CFD to calculate the physical parameters correlated to wind load on bridge,discussed the variation of three component coefficients with Reynolds number based on two typical bridge sections with FLUENT software for numerical simulation,established actual scale models,by selecting reasonable type of meshing form.Three different turbulence models were used in the analysis,the numerical calculation results were compared with the one of wind tunnel test.The results show that CFD can be used to calculate bridge sections with actual size so as to avoid the insufficient of scale model in wind tunnel test.The calculation has the characteristic of low cost,high speed and complete materials,which can provide a platform to simulate the real and ideal condition.7 tabs,6 figs,15 refs.
引文
[1]刘志文,陈政清,胡建华,等.大跨度双幅桥面桥梁气动干扰效应[J].长安大学学报:自然科学版,2008,28(6):55-59.LI U Zhi-wen,CHEN Zheng-qing,HUJian-hua,et al.Aerodynamic interference effects of twin decks bridg-es withlong span[J].Journal of Chang an University:Natural Science Edition,2008,28(6):55-59.
[2]李加武,张宏杰,韩万水.斜拉桥风致响应的雷诺数效应[J].中国公路学报,2009,22(2):42-46.LI Jia-wu,ZHANG Hong-jie,HAN Wan-shui.Wind-induced response of cable-stayed bridge with consid-eration of Reynolds number effect[J].China Journalof Highway and Transport,2009,22(2):42-46.
[3]项海帆,林志兴.公路桥梁抗风设计指南[M].北京:人民交通出版社,1996.
[4]楼小峰.桥梁断面气动特性的数值模拟[D].上海:同济大学,2002.
[5]李加武.桥梁断面雷诺数效应研究[D].上海:同济大学,2003.
[6]俞载道.结构动力学基础[M].上海:同济大学出版社,1997.
[7]王统宁,刘建新,于泳波.近断层地震动作用下减隔震桥梁空间动力分析[J].交通运输工程学报,2009,9(5):20-25.WANG Tong-ning,LI U Jian-xin,YU Yong-bo.Dy-namic analysis on the near-fault reduced isolationbridge space[J].Journal of Traffic and TransportationEngineering,2009,9(5):20-25.
[8]王福军.计算流体动力学分析[M].北京:清华大学出版社,2004.
[9]祝志文,陈政清.数值模拟桥梁断面气动导数和颤振临界风速[J].中国公路学报,2004,17(3):41-45.ZHU Zhi-wen,CHEN Zheng-qing.Numerical si mula-tion of bridge section aerodynamic derivatives andchatter critical wind speed[J].China Journal of High-way and Transport,2004,17(3):41-45.
[10]黄滢.基于FLUENT软件的建筑物风场数值模拟[D].武汉:华中科技大学,2005.
[11]崔春义,孙占琦,赵颖华,等.三维复杂高层建筑抗震性能动力时程分析[J].广西大学学报:自然科学版,2009,34(5):115-126.CUI Chun-yi,SUN Zhan-qi,ZHAO Ying-hua,et al.Dynamic analysis on 3d complex high-rise buildingsseismic performance[J].Journal of Guangxi Universi-ty:Natural Science Edition,2009,34(5):115-126.
[12]白华,李加武,胡兆同,等.近流线型断面静力三分力系数的雷诺数效应识别[J].建筑科学与工程学报,2007,24(4):60-63.BAI Hua,LI Jia-wu,HU Zhao-tong,et al.Identifica-tion of Reynolds number effect of tri-component forcecoefficient of streamline-liked section[J].Journal ofArchitecture and Civil Engineering,2007,24(4):60-63.
[13]Su C,Han DJ,Yan QS,et al.Wind-induced vibrationanalysis of the Hong Kong TingKau bridge[J].Pro-ceedings of the Institution of Civil Engineers:Struc-tures and Buildings,2003,156(3):263-272.
[14]Kiviluoma R.Coupled-mode buffeting and flutteranalysis of bridges[J].Computers and Structures,1999,70(2):219-228.
[15]Ding Q,Lee P K K.Computer si mulation of buffetingactions of suspension bridges under turbulent wind[J].Computers and Structures,2000,76(6):787-797.
[2]李加武,张宏杰,韩万水.斜拉桥风致响应的雷诺数效应[J].中国公路学报,2009,22(2):42-46.LI Jia-wu,ZHANG Hong-jie,HAN Wan-shui.Wind-induced response of cable-stayed bridge with consid-eration of Reynolds number effect[J].China Journalof Highway and Transport,2009,22(2):42-46.
[3]项海帆,林志兴.公路桥梁抗风设计指南[M].北京:人民交通出版社,1996.
[4]楼小峰.桥梁断面气动特性的数值模拟[D].上海:同济大学,2002.
[5]李加武.桥梁断面雷诺数效应研究[D].上海:同济大学,2003.
[6]俞载道.结构动力学基础[M].上海:同济大学出版社,1997.
[7]王统宁,刘建新,于泳波.近断层地震动作用下减隔震桥梁空间动力分析[J].交通运输工程学报,2009,9(5):20-25.WANG Tong-ning,LI U Jian-xin,YU Yong-bo.Dy-namic analysis on the near-fault reduced isolationbridge space[J].Journal of Traffic and TransportationEngineering,2009,9(5):20-25.
[8]王福军.计算流体动力学分析[M].北京:清华大学出版社,2004.
[9]祝志文,陈政清.数值模拟桥梁断面气动导数和颤振临界风速[J].中国公路学报,2004,17(3):41-45.ZHU Zhi-wen,CHEN Zheng-qing.Numerical si mula-tion of bridge section aerodynamic derivatives andchatter critical wind speed[J].China Journal of High-way and Transport,2004,17(3):41-45.
[10]黄滢.基于FLUENT软件的建筑物风场数值模拟[D].武汉:华中科技大学,2005.
[11]崔春义,孙占琦,赵颖华,等.三维复杂高层建筑抗震性能动力时程分析[J].广西大学学报:自然科学版,2009,34(5):115-126.CUI Chun-yi,SUN Zhan-qi,ZHAO Ying-hua,et al.Dynamic analysis on 3d complex high-rise buildingsseismic performance[J].Journal of Guangxi Universi-ty:Natural Science Edition,2009,34(5):115-126.
[12]白华,李加武,胡兆同,等.近流线型断面静力三分力系数的雷诺数效应识别[J].建筑科学与工程学报,2007,24(4):60-63.BAI Hua,LI Jia-wu,HU Zhao-tong,et al.Identifica-tion of Reynolds number effect of tri-component forcecoefficient of streamline-liked section[J].Journal ofArchitecture and Civil Engineering,2007,24(4):60-63.
[13]Su C,Han DJ,Yan QS,et al.Wind-induced vibrationanalysis of the Hong Kong TingKau bridge[J].Pro-ceedings of the Institution of Civil Engineers:Struc-tures and Buildings,2003,156(3):263-272.
[14]Kiviluoma R.Coupled-mode buffeting and flutteranalysis of bridges[J].Computers and Structures,1999,70(2):219-228.
[15]Ding Q,Lee P K K.Computer si mulation of buffetingactions of suspension bridges under turbulent wind[J].Computers and Structures,2000,76(6):787-797.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心