地铁运行列车引起建筑物低频振动的数值分析
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摘要
采用施加在轨道上的一系列移动轴荷载模拟列车作用,利用轨道结构连续弹性双层梁模型,计算出某城市地铁列车运行产生的轨枕与隧道之间的作用力。在此基础上,建立隧道-土层-建筑物有限元模型分析了不同车速下不同距离建筑物中不同楼层的振动规律。分析结果表明:移动列车轴荷载引起建筑物低频振动;车速越高,建筑物的竖向振动水平越高;随着到轨道中心线距离的增加,建筑物竖向振动水平逐渐减小;不同楼层竖向振动水平基本接近。
The train was simulated by a series of moving axle load applied on the track.Using the continuous elastic double layers beam model of track structure,the forces between the sleepers and the tunnel inlay produced by the running of certain subway train were calculated.On the basis of the model,numerical model of tunnel-soil-building was established.The vibration characteristics of different floors of the building with different distances to the railway track and at different train speeds were obtained.The results show that the moving train axle load induces building low-frequency vibrations.Higher train speed induces larger structural vertical vibrations.The longer the distance between a building and the track,the smaller the structural vertical vibrations would be.The vertical vibration levels of different floors are basically the same.
The train was simulated by a series of moving axle load applied on the track.Using the continuous elastic double layers beam model of track structure,the forces between the sleepers and the tunnel inlay produced by the running of certain subway train were calculated.On the basis of the model,numerical model of tunnel-soil-building was established.The vibration characteristics of different floors of the building with different distances to the railway track and at different train speeds were obtained.The results show that the moving train axle load induces building low-frequency vibrations.Higher train speed induces larger structural vertical vibrations.The longer the distance between a building and the track,the smaller the structural vertical vibrations would be.The vertical vibration levels of different floors are basically the same.
引文
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[11]LEI Xiao-yan.Fourier transform technique for predictingtrack critical velocity of high speed railway[C]∥Trafficand Transportation Studies,Proceedings of ICTTS,2006:848-858.
[12]Institute of Road&Railway Engineering East China JiaotongUniversity.The Kingdom of Thailand Suvarnabhumi AirportRail Link Project Noise and Vibration Assessment Report[R].Nanchang:Institute of Road&Railway Engineering,East China Jiaotong University,2006.
[13]Hall L.Simulations and analyses of train-induced groundvibrations in finite element models[J].Soil Dynamics andEarthquake Engineering,2003,23:403-413.
[14]Paolucci,Maffeis A,et al.Numerical prediction of low-frequency ground vibrations induced by high-speed trains atLedsgaard,Sweden[J].Soil Dynamics and Earthquake En-gineering,2003,23:425-433.
[15]International Organization for Standardization.InternationalStandard ISO 2631-1:Mechanical vibration and shock—evaluation of human exposure to whole body vibration.Part1:General requirements[S].Switzerland,1997.
[2]U S.Department of Transportation Federal Railroad Ad-ministration.High-Speed Ground Transportation Noise andVibration Impact Assessment[S].2005.
[3]夏禾,张楠,曹艳梅.列车对周围地面及建筑物振动影响的试验研究[J].铁道学报,2004,26(4):93-98.XIA He,ZHANG Nan,CAO Yan-mei.Experimental studyof train-induced vibrations of ground and nearby buildings[J].Journal of the China Railway Society,2004,26(4):93-98.
[4]闫维明,聂晗,等.地铁交通引起的环境振动的实测与分析[J].地震工程与工程振动,2006,26(4):187-191.YAN Wei-ming,NIE Han,et al.In situ experiment andanalysis of environmental vibration induced by urban subwaytransit[J].Earthquake Engineering and Engineering Vibra-tion,2006,26(4):187-191.
[5]蒋通,张昕.高架轨道交通引起环境振动的实测与数值模拟[J].同济大学学报,2004,32(5):565-569.JIANG Tong,ZHANG Xin.In situ experimental and numeri-cal predictions of environmental vibration by urban viaduct railtransit[J].Journal of Tongji University,2004,32(5):565-569.
[6]With C,Bodare A.Prediction of train-induced vibrationsinside buildingsusing transfer functions[J].Soil Dynamicsand Earthquake Engineering,2007,27:93-98.
[7]Schillemans L.Impact of sound and vibration of the north-south high-speed railway connection through the city ofAntwerp Belgium[J].Journal of Sound and Vibration,2003,267:637-649.
[8]Chua K H,Lo K W,Balendra T.Building response due tosubway traffic[J].Journal of Geotechnical Engineering,1995,121(11):746-754.
[9]王逢朝,夏禾,张鸿儒.地铁列车振动对邻近建筑物的影响[J].北方交通大学学报,1999,23(5):45-48.WANG Feng-chao,XIA He,ZHANG Hong-ru.Vibration ef-fects of subway trains on surrounding buildings[J].Journal ofNorthern Jiaotong University,1999,23(5):45-48.
[10]曹艳梅,夏禾.运行列车对高层建筑结构的振动影响[J].工程力学,2006,23(3):162-167.CAO Yan-mei,XIA He.Vibrations of high-rise buildingsinduced by running trains[J].Engineering Mechanics,2006,23(3):162-167.
[11]LEI Xiao-yan.Fourier transform technique for predictingtrack critical velocity of high speed railway[C]∥Trafficand Transportation Studies,Proceedings of ICTTS,2006:848-858.
[12]Institute of Road&Railway Engineering East China JiaotongUniversity.The Kingdom of Thailand Suvarnabhumi AirportRail Link Project Noise and Vibration Assessment Report[R].Nanchang:Institute of Road&Railway Engineering,East China Jiaotong University,2006.
[13]Hall L.Simulations and analyses of train-induced groundvibrations in finite element models[J].Soil Dynamics andEarthquake Engineering,2003,23:403-413.
[14]Paolucci,Maffeis A,et al.Numerical prediction of low-frequency ground vibrations induced by high-speed trains atLedsgaard,Sweden[J].Soil Dynamics and Earthquake En-gineering,2003,23:425-433.
[15]International Organization for Standardization.InternationalStandard ISO 2631-1:Mechanical vibration and shock—evaluation of human exposure to whole body vibration.Part1:General requirements[S].Switzerland,1997.
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