高架轨道交通引起的地表振动参数化分析
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摘要
基于Abaqus软件64CPU并行计算集群平台,建立了车辆-轨道-高架桥-基础-地基耦合的三维有限元分析模型。得到了不同工况下列车运行时引起的地表振动特征,对地表振动振级随着与桥墩距离增大而衰减的规律进行了参数化分析,结果表明,随着列车车速的增大,地表振动振级明显增大;与空载时相比,列车乘客满载时仅靠近桥墩处的地表振级略微增大,对远处几乎无影响;列车车厢数量对地表振动振级的影响不明显;列车双线运行时引起的地表振动振级比单线运行时有明显的增大。扣件刚度的增大会略微减小地表振动振级。随着桩长的增加,地表振动振级有较大幅度的减小;增加桥墩的跨度能减小地表振动振级,但增加到一定值时再增加也不会有明显的减振效果;桥墩高度对地表振动振级无明显影响。随着场地土层剪切波速的增加,地表振动振级呈逐渐减小的趋势。
Based on the Abaqus software 64 CPU parallel computing cluster platform,a three-dimensional finite element model of train-track-viaduct-foundation-soil coupling is established.Ground surface vibration characters caused by trains running under different conditions are obtained;and the law about that ground surface vibration level decreases with the increased distance between the ground surface and the viaduct pier is parametrically analyzed.Then the main conclusions are drawn as follows.With the increased train speed,ground surface vibration level increases obviously.The fully loaded train capacity only slightly increases ground surface vibration level of the site near pier,having little effect on the site away from pier.The number of carriages has no obvious effect on ground surface vibration level.Ground surface vibration level under train running in double line is much greater than it under train running in single line.The increase of fastener stiffness could slightly decrease ground surface vibration level.With the increase of pile length,ground surface vibration level decreases much.The increase of pier span could decrease ground surface vibration level,however,when pier span increases to a certain value,there isn't apparent effect on vibration reduction.Pier height has no apparent effect on ground surface vibration level.The ground surface vibration level tends to gradually decrease with the increase of shear wave velocity of soil.
Based on the Abaqus software 64 CPU parallel computing cluster platform,a three-dimensional finite element model of train-track-viaduct-foundation-soil coupling is established.Ground surface vibration characters caused by trains running under different conditions are obtained;and the law about that ground surface vibration level decreases with the increased distance between the ground surface and the viaduct pier is parametrically analyzed.Then the main conclusions are drawn as follows.With the increased train speed,ground surface vibration level increases obviously.The fully loaded train capacity only slightly increases ground surface vibration level of the site near pier,having little effect on the site away from pier.The number of carriages has no obvious effect on ground surface vibration level.Ground surface vibration level under train running in double line is much greater than it under train running in single line.The increase of fastener stiffness could slightly decrease ground surface vibration level.With the increase of pile length,ground surface vibration level decreases much.The increase of pier span could decrease ground surface vibration level,however,when pier span increases to a certain value,there isn't apparent effect on vibration reduction.Pier height has no apparent effect on ground surface vibration level.The ground surface vibration level tends to gradually decrease with the increase of shear wave velocity of soil.
引文
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[17]翟婉明.车辆-轨道耦合动力学[M].北京:科学出版社,2007.
[18]马学宁,梁波,高峰.高速铁路板式无砟轨道-路基结构动力特性研究[J].铁道学报,2011,33(2):72-78.MA Xue-ning,LIANG Bo,GAO Feng.Study of thedynamic properties of slab ballastless track and subgradestructure on high-speed railway[J].Journal of the ChinaRailway Society,2011,33(2):72-78.
[19]谷音,刘晶波,杜义欣.三维一致黏弹性人工边界及等效黏弹性边界单元[J].工程力学,2007,24(12):31-37.GU Yin,LIU Jing-bo,DU Yi-xin.3D consistentviscous-spring artificial boundary and viscous-springboundary element[J].Engineering Mechanics,2007,24(12):31-37.
[20]卢祖文.客运专线铁路轨道[M].北京:中国铁道出版社,2005.
[2]TAKEMIY H.Substructure simulation of inhomogeneoustrack and layered ground dynamic interaction under trainpassage[J].Journal of Engineering Mechanics,2005,131(7):699-711.
[3]FORREST J A,HUNT H E M.A three-dimensionalmodel for calculation of train-induced ground vibration[J].Journal of Sound and Vibration,2006,294(1):678-709.
[4]HUSSEIN M F M,HUNT H E M.A numerical model forcalculating vibration from a railway tunnel embedded in afull-space[J].Journal of Sound and Vibration,2007,305(1):401-431.
[5]陈国兴,陈斌,苏晓梅.快速轨道交通运行引起的场地振动反应分析[J].防灾减灾工程学报,2008,28(4):454-461.CHEN Guo-xing,CHEN Bin,SU Xiao-mei.Responseanalysis of ground vibration induced by rapid railtransit[J].Journal of Disaster Prevention andMitigation Engineering,2008,28(4):454-461.
[6]陈建国,夏禾,肖军华,等.列车运行对周围地表振动影响的试验研究[J].岩土力学,2008,29(11):3113-3118.CHEN Jian-guo,XIA He,XIAO Jun-hua,et al.Experimental study of ground surface vibrations causedby moving train[J].Rock and Soil Mechanics,2008,29(11):3113-3118.
[7]雷晓燕,刘庆杰,朱成九.高架轨道诱发环境振动预测与评价研究[J].噪声与振动控制,2008,6:108-112.LEI Xiao-yan,LIU Qing-jie,ZHU Cheng-jiu.Predictionand assessment of environment vibration induced byelevated railway[J].Noise and Vibration Control,2008,6:108-112.
[8]魏鹏勃,夏禾,陈建国,等.高架轨道交通引起的地面振动理论与试验研究[J].工程力学,2009,26(10):117-122.WEI Peng-bo,XIA He,CHEN Jian-guo,et al.Theoreticaland experimental study of environmental vibrationsinduced by trains on viaduct[J].Engineering Mechanics,2009,26(10):117-122.
[9]常乐,闫维明,任珉.高架路交通诱发的地表振动测试与分析[J].振动、测试与诊断,2009,29(2):175-178.CHANG Le,YAN Wei-ming,REN Min.Test andanalysis of ground surface vibration Induced by elevatedroad traffic[J].Journal of Vibration,Measurement&Diagnosis,2009,29(2):175-178.
[10]张媛,管友海,李静.车辆-轨道-桥梁空间耦合振动引起的环境振动[J].青岛大学学报(工程技术版),2009,24(2):72-76.ZHANG Yuan,GUAN You-hai,LI Jing.Ambientvibration induced by spatial coupling vibration ofvehicle-track-bridge system[J].Journal of QingdaoUniversity(Engineering&Technology Edition),2009,24(2):72-76
[11]王文斌,刘维宁,贾颖绚,等.更换减振扣件前后地铁运营引起地面振动的研究[J].中国铁道科学,2010,31(1):87-91.WANG Wen-bin,LIU Wei-ning,JIA Ying-xuan,et al.Research on the vibration of the ground caused by metrotrain operation before and after changing the dampingfasteners[J].China Railway Science,2010,31(1):87-91.
[12]丁祖德,彭立敏,雷明锋,等.高速铁路隧道列车振动响应影响因素分析[J].铁道科学与工程学报,2011,8(4):1-6.DING Zu-de,PENG Li-min,LEI Ming-feng,et al.Analysis of influence factors on dynamic response ofhigh-speed railway tunnel under vibration load[J].Journal of Railway Science and Engineering,2011,8(4):1-6.
[13]王福彤,陶夏新,崔高航,等.地面城轨交通近轨道区域自由地表振动实测研究[J].振动与冲击,2011,30(5):131-135.WANG Fu-tong,TAO Xia-xin,CUI Gao-hang,et al.Testin situ for free ground vibration near urban railway line[J].Journal of Vibration and Shock,2011,30(5):131-135.
[14]阚圣哲,陈国兴,陈磊.基于Abaqus软件的并行计算集群平台构建于优化方法[J].防灾减灾工程学报,2009,29(6):644-651.KAN Sheng-zhe,CHEN Guo-xing,CHEN Lei.Construction and optimization of parallel computingcluster platform based on Abaqus software[J].Journal ofDisaster Prevention and Mitigation Engineering,2009,29(6):644-651.
[15]陈国兴,陈磊,景立平,等.地铁地下结构抗震分析并行计算的显式与隐式算法比较[J].铁道学报,2011,33(11):111-117.CHEN Guo-xing,CHEN Lei,JING Li-ping,et al.Comparison of implicit and explicit finite elementmethods with parallel computing for seismic responseanalysis of metro underground structures[J].Journal ofthe China Railway Society,2011,33(11):111-117.
[16]毛昆明,陈国兴.基于Abaqus软件的并行计算异构集群平台的搭建[J].地震工程与工程振动,2011,24(2):19-22.MAO Kun-ming,CHEN Guo-xing.Construction ofparallel computing heterogeneous cluster platform basedon Abaqus software[J].Earthquake Engineering andEngineering Vibration,2011,24(2):19-22.
[17]翟婉明.车辆-轨道耦合动力学[M].北京:科学出版社,2007.
[18]马学宁,梁波,高峰.高速铁路板式无砟轨道-路基结构动力特性研究[J].铁道学报,2011,33(2):72-78.MA Xue-ning,LIANG Bo,GAO Feng.Study of thedynamic properties of slab ballastless track and subgradestructure on high-speed railway[J].Journal of the ChinaRailway Society,2011,33(2):72-78.
[19]谷音,刘晶波,杜义欣.三维一致黏弹性人工边界及等效黏弹性边界单元[J].工程力学,2007,24(12):31-37.GU Yin,LIU Jing-bo,DU Yi-xin.3D consistentviscous-spring artificial boundary and viscous-springboundary element[J].Engineering Mechanics,2007,24(12):31-37.
[20]卢祖文.客运专线铁路轨道[M].北京:中国铁道出版社,2005.
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