地震波频谱特性对高速列车动态脱轨行为的影响
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摘要
为研究地震下高速列车的动态响应及地震波频谱特性对车辆动态脱轨行为的影响,发展了一种地震激励下车辆/轨道耦合动力学数值模型,车辆模型被简化为考虑悬挂非线性特性的35自由度多刚体系统,板式轨道被视为由钢轨、扣件系统、轨道板及CA砂浆层组成的弹性支承结构,钢轨被视为连续弹性离散点支承基础上的Timoshenko梁,轨道板用三维实体有限元模拟。采用移动轨下支承模型分析离散的轨枕支承对系统动力响应的影响,地震波被简化为周期性的横向正弦波加入计算模型中。基于仿真计算,对地震情况下高速列车的动力响应进行了详细分析,并重点分析了地震波频谱特性对高速车辆动态脱轨机理的影响。分析结果表明:地震波的频谱特性对车辆的动态响应、脱轨机理及车辆的运行安全有着重要的影响。
In order to investigate the dynamic responses of a high-speed train under earthquake and the effect of spectrum characteristics of seismic wave on high-speed railway vehicle derailment,a coupling vehicle/track dynamic model with an earthquake excitation is put forward,in which the vehicle is modelled as a 35 DOF multi-body system with nonlinear suspension characteristic and the slab track is modelled as a discrete elastic support model,which consists of rails fasteners,track slabs and a Cement Asphalt Mortar layer.Rails are assumed to be Timoshenko beams supported by discrete rail fasteners,and the slabs are modelled as solid finite elements.A moving track support model is used to simulate the effect of the periodical discrete track supports on the vehicle/track interaction,and the earthquake motions are simplified as cyclic lateral sine waves for the boundary input of the coupling vehicle-track system.The detailed numerical simulation makes an investigation into the dynamic behaviour of a high-speed railway vehicle excited by the earthquake excitation,and focuses on analyzing the effect of seismic wave spectrum on derailment mechanism of a high-speed vehicle.Through the numerical analysis,it is found that the spectrum characteristics of seismic wave have a great effect on the dynamic responses and derailment mechanism,also the operation safety of a high-speed railway vehicle.
In order to investigate the dynamic responses of a high-speed train under earthquake and the effect of spectrum characteristics of seismic wave on high-speed railway vehicle derailment,a coupling vehicle/track dynamic model with an earthquake excitation is put forward,in which the vehicle is modelled as a 35 DOF multi-body system with nonlinear suspension characteristic and the slab track is modelled as a discrete elastic support model,which consists of rails fasteners,track slabs and a Cement Asphalt Mortar layer.Rails are assumed to be Timoshenko beams supported by discrete rail fasteners,and the slabs are modelled as solid finite elements.A moving track support model is used to simulate the effect of the periodical discrete track supports on the vehicle/track interaction,and the earthquake motions are simplified as cyclic lateral sine waves for the boundary input of the coupling vehicle-track system.The detailed numerical simulation makes an investigation into the dynamic behaviour of a high-speed railway vehicle excited by the earthquake excitation,and focuses on analyzing the effect of seismic wave spectrum on derailment mechanism of a high-speed vehicle.Through the numerical analysis,it is found that the spectrum characteristics of seismic wave have a great effect on the dynamic responses and derailment mechanism,also the operation safety of a high-speed railway vehicle.
引文
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[17]Xiao Xinbiao,Jin Xuesong,Wen Zefeng.Influence ofrail fastener failure on vehicle dynamic derailment[J].Journal of Traffic and Transportation Engineering,2006,6(1):10―15.
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[19]Xiao Xinbiao,Jin Xuesong,Wen Zefeng.Effect ofdisabled fastening systems and ballast on vehiclederailment[J].ASME Journal of Vibration andAcoustics,2007,129(2):217―229.
[20]Xiao Xinbiao,Jin Xuesong,Wen Zefeng,et al.Effect oftangent track buckle on vehicle derailment[J].Multi-Body Dynamic,2011,25(1):1―41.
[21]林玉森.地震作用下高速铁路桥上列车走行性研究[D].成都:西南交通大学,2007.Lin Yusen.Study on train running abilities duringearthquake on high-speed railway bridge[D].Chengdu:Southwest Jiaotong University,2007.(in Chinese)
[22]GB/T17742-2008,中国地震烈度表[S].北京:中国国家标准化管理委员会,2008.GB/T 17742-2008,The Chinese seismic intensity scale[S].Beijing:China National StandardizationManagement Commission,2008.(in Chinese)
[23]池茂儒,张卫华,曾京,等.蛇行运动对铁道车辆平稳性的影响[J].振动工程学报,2008,21(6):639―643.Chi Maoru,Zhang Weihua,Zeng Jing,et al.Influence ofhunting motion on ride quality of railway vehicle[J].Journal of Vibration Engineering,2008,21(6):639―643.(in Chinese)
[2]Nagase K,Kondo K,Nomura T.Train damaged by thequake in Kobe[J].The Japan Society of MechanicalEngineers,1997,63(606):620―627.
[3]Nishimura K,Terumichi Y,Morimura T.Developmentof vehicle dynamics simulation for safety analyses of railvehicles on excited tracks[J].Journal of Computationaland Nonlinear Dynamics,2009,48(3):129―135.
[4]Miyamoto T,Ishida H,Matsuo M.Running safety ofrailway vehicle as earthquake occurs[J].JapaneseNational Railway Technical Research Institute QuarterlyReports,1997,38(3):117―122.
[5]Miyamoto T,Ishida H,Matsuo M.The dynamic behaviorof railway vehicles during earthquakes[J].The JapanSociety of Mechanical Engineers,Series C,1998,64(626):236―243.
[6]Miyamoto T,Matsumoto N,Sogabe M,et al.Full-scaleexperiment on the dynamic behavior of railway vehiclesagainst heavy track vibration[J].Journal of Environmentand Engineering,2007,2(2):419―428.
[7]鉄道縂合技術研究所編:鉄道搆造物等設計標準(耐震設計)[S].丸善:鉄道総合技術研究所,1999:117―122.Railway Technical Research Institute.Design standardfor railway structures(Seismic designs)[S].Maruzen:Railway Technical Research Institute,1999:117―122.(in Japanese)
[8]Nishimura K,Terumichi Y,Morimura T,et al.Experimental study on the vehicle safety by earthquaketrack excitation with 1/10 scale vehicle and roller rig[J].Journal of System Design and Dynamics,2010,4(1):226―237.
[9]Nishimura K,Terumichi Y,Morimura T,et al.Analytical study on the safety of high speed railwayvehicle on excited tracks[J].Journal of System Designand Dynamics,2010,4(1):211―225.
[10]Tanabe M,Matsumoto N,Wakui H.A simple andefficient numerical method for dynamic interactionanalysis of a high-speed train and railway structureduring an earthquake[J].Journal of Computational andNonlinear Dynamics,2008,3(2):1―8.
[11]Wu Y.Dynamic interactions of train-rail-bridge systemunder normal and seismic conditions[D].China:National Taiwan University,2000.
[12]Yang Y,Wu Y.Dynamic stability of trains moving overbridges shaken by earthquakes[J].Journal of Sound andVibration,2002,258(1):65―94.
[13]Yau J,Fryba L.Response of suspended beams due tomoving loads and vertical seismic ground excitations[J].Engineering Structures,2007,29(12):3255―3262.
[14]Xia H,Han Y,Zhang N,et al.Dynamic analysis oftrain-bridge system subjected to non-uniform seismicexcitations[J].Earthquake Engineering and StructuralDynamics,2009,35(12):1563―1579.
[15]Xiao Xinbiao,Jin Xuesong,Wen Zefeng.Effect ofearthquake on high speed railway vehicle running safety[C].Proceedings of the IAVSD’09,Stockholm,Sweden:KTH,2009:39―51.
[16]Xiao Xinbiao,Wen Zefeng,Jin Xuesong,et al.Effects oftrack support failures on dynamic response of high speedtracks[J].International Journal of Nonlinear Sciencesand Numerical Simulation,2007,8(4):615―630.
[17]Xiao Xinbiao,Jin Xuesong,Wen Zefeng.Influence ofrail fastener failure on vehicle dynamic derailment[J].Journal of Traffic and Transportation Engineering,2006,6(1):10―15.
[18]GB5599-85,铁道车辆动力学性能评定和试验鉴定规范[S].北京:中国计划出版社,1985.GB 5599-85,Railway vehicles-specification forevaluation the dynamic performance and accreditationtest[S].Beijing:China Planning Press,1985.(inChinese)
[19]Xiao Xinbiao,Jin Xuesong,Wen Zefeng.Effect ofdisabled fastening systems and ballast on vehiclederailment[J].ASME Journal of Vibration andAcoustics,2007,129(2):217―229.
[20]Xiao Xinbiao,Jin Xuesong,Wen Zefeng,et al.Effect oftangent track buckle on vehicle derailment[J].Multi-Body Dynamic,2011,25(1):1―41.
[21]林玉森.地震作用下高速铁路桥上列车走行性研究[D].成都:西南交通大学,2007.Lin Yusen.Study on train running abilities duringearthquake on high-speed railway bridge[D].Chengdu:Southwest Jiaotong University,2007.(in Chinese)
[22]GB/T17742-2008,中国地震烈度表[S].北京:中国国家标准化管理委员会,2008.GB/T 17742-2008,The Chinese seismic intensity scale[S].Beijing:China National StandardizationManagement Commission,2008.(in Chinese)
[23]池茂儒,张卫华,曾京,等.蛇行运动对铁道车辆平稳性的影响[J].振动工程学报,2008,21(6):639―643.Chi Maoru,Zhang Weihua,Zeng Jing,et al.Influence ofhunting motion on ride quality of railway vehicle[J].Journal of Vibration Engineering,2008,21(6):639―643.(in Chinese)
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