考虑水晃动作用时椭球形水塔的地震反应分析
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摘要
针对实际工程,首先利用计算流体动力学软件FLUENT建立可以考虑水晃动作用影响的椭球形水塔的动力计算模型,然后对该水塔结构在不同水深情况下的自振频率和阻尼特性以及在不同地震波动下的时程反应进行计算分析。计算结果表明:椭球形水塔中水体的晃荡作用有明显的TLD效应,能够有效地减小水塔的地震反应。
Combined with engineering practice,this paper firstly presented the dynamic calculating model of an ellipsoidal water tower using FLUENT software,a computational fluid dynamics (CFD),in order that the water effect of tower can be considered.And then the natural periods and damper characteristics of the tower with different water depths were studied.Finally,its seismic responses under various earthquake waves were researched.The results showed that the sloshing of water in the ellipsoidal tower can effectively reduce the seismic response of tower structure because it evidently plays a role of TLD.
Combined with engineering practice,this paper firstly presented the dynamic calculating model of an ellipsoidal water tower using FLUENT software,a computational fluid dynamics (CFD),in order that the water effect of tower can be considered.And then the natural periods and damper characteristics of the tower with different water depths were studied.Finally,its seismic responses under various earthquake waves were researched.The results showed that the sloshing of water in the ellipsoidal tower can effectively reduce the seismic response of tower structure because it evidently plays a role of TLD.
引文
[1]Housner G W.Dynamic Pressure on Accelerated Fluid Con-tainer[J].Bull·Seism·Soc·AM·,1957,47(1):15-35.
[2]Housner G W.The Dynamic Behavior of Water Tanks[J].Bull·Seism·Soc·AM·,1963,53(2):381-387.
[3]Abramson H N·The Dynamic Behavior of Liquid in Moving Containers[R].Report SP106of NASA,1996.
[4]Solaas,Froydis Faltinsen Oddm·Combined Numerical and An-alytical Solution for Sloshing in Two-Di mensional Tanks of General Shape[J].Journal of Ship Research,1997,41(2):118-129.
[5]Huang Z J,Hsiung C C·Nonlinear Shallow-Water Flow on Deck[J].Journal of Ship Research,1996,40(4):303-315.
[6]Chen W,Haroun M A,Liu F·Large Amplitude Liquid Slos-hingin Seismically Excited Tanks[J].Earthquake Engineering and Structural Dynamics,1996,25:653-669.
[7]Jones A F,Hul me A·The Hydrodynamics of Water on Deck[J].Journal of Ship Research,1987,31(2):125-135.
[8]Ma Q W,Wu G X,Eatock Taylor R·Finite Element Analysis of the Non-Linear Transient Wavesin Three Di mensional Long Tank[C]//12thInternational Workshop on Water Waves and Floating Bodies·Carryle-Rouet,France:1997.
[9]Okamoto T,Kawahara M·Two-Di mensional Sloshing Analy-sis by Lagrangian Finite Element Method[J].International Journal for Numerical Methods in Fluids,1990,11:453-477.
[10]Hyun Moo Koh,Jea Kwan Ki m,Jang Ho Park.Fluid-Struc-ture Interaction Analysis of3-D Rectangular Tanks by a Vara-tionally Coupled BEM-FEMand Comparison with Test Results[J].Earthquake Engineer and Structural Dynamics,1998,27:109-124.
[11]王福军·计算流体动力学分析——CFD软件原理和应用[M].北京:清华大学出版社,2004.
[12]北村春幸·基于性能设计的建筑振动解析[M].西安:西安交通大学出版社,2004.
[13]尚春雨.带自由面水体的结构地震反应分析方法及应用[D].上海:上海交通大学,2008.
[2]Housner G W.The Dynamic Behavior of Water Tanks[J].Bull·Seism·Soc·AM·,1963,53(2):381-387.
[3]Abramson H N·The Dynamic Behavior of Liquid in Moving Containers[R].Report SP106of NASA,1996.
[4]Solaas,Froydis Faltinsen Oddm·Combined Numerical and An-alytical Solution for Sloshing in Two-Di mensional Tanks of General Shape[J].Journal of Ship Research,1997,41(2):118-129.
[5]Huang Z J,Hsiung C C·Nonlinear Shallow-Water Flow on Deck[J].Journal of Ship Research,1996,40(4):303-315.
[6]Chen W,Haroun M A,Liu F·Large Amplitude Liquid Slos-hingin Seismically Excited Tanks[J].Earthquake Engineering and Structural Dynamics,1996,25:653-669.
[7]Jones A F,Hul me A·The Hydrodynamics of Water on Deck[J].Journal of Ship Research,1987,31(2):125-135.
[8]Ma Q W,Wu G X,Eatock Taylor R·Finite Element Analysis of the Non-Linear Transient Wavesin Three Di mensional Long Tank[C]//12thInternational Workshop on Water Waves and Floating Bodies·Carryle-Rouet,France:1997.
[9]Okamoto T,Kawahara M·Two-Di mensional Sloshing Analy-sis by Lagrangian Finite Element Method[J].International Journal for Numerical Methods in Fluids,1990,11:453-477.
[10]Hyun Moo Koh,Jea Kwan Ki m,Jang Ho Park.Fluid-Struc-ture Interaction Analysis of3-D Rectangular Tanks by a Vara-tionally Coupled BEM-FEMand Comparison with Test Results[J].Earthquake Engineer and Structural Dynamics,1998,27:109-124.
[11]王福军·计算流体动力学分析——CFD软件原理和应用[M].北京:清华大学出版社,2004.
[12]北村春幸·基于性能设计的建筑振动解析[M].西安:西安交通大学出版社,2004.
[13]尚春雨.带自由面水体的结构地震反应分析方法及应用[D].上海:上海交通大学,2008.
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