无碴轨列车引起的竖向振动在土体中的传播研究
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摘要
城市轨道交通和高速铁路的发展,加剧了列车运行引起的环境振动。该文对CRTSI型板式无碴轨列车运行引起的竖向振动进行了研究,基于有限元模型分析了竖向振动在土体中传播规律。竖向振动的频率集中在10～120Hz之间,它和主频、振级都随着距离振源距离的增大不断减小,并且随振动的不断传播,高频成分迅速衰减;竖向加速度峰值随着深度的增加有减小的趋势,加速度峰值衰减的幅度在距离轨道较近时更加明显。
With the development of urban traffic and high speed railway,environmental vibration caused by train running is accelerated.Vertical vibration by ballastless track train of CRIS I is studied and the travel rule is analyzed with finite element model.The results show that when the vertical vibration frequency is within 10-120Hz,the vibration,dominant frequency and vibration level decrease with the increase of the vibration source distance and high frequency component immediately reduce with the continuously travel of vibration.The peak value of vertical accelerated speed demonstrates the trend of reduction with the increase of depth and the reduction range of accelerated speed is more obvious in comparatively close track distance.
With the development of urban traffic and high speed railway,environmental vibration caused by train running is accelerated.Vertical vibration by ballastless track train of CRIS I is studied and the travel rule is analyzed with finite element model.The results show that when the vertical vibration frequency is within 10-120Hz,the vibration,dominant frequency and vibration level decrease with the increase of the vibration source distance and high frequency component immediately reduce with the continuously travel of vibration.The peak value of vertical accelerated speed demonstrates the trend of reduction with the increase of depth and the reduction range of accelerated speed is more obvious in comparatively close track distance.
引文
[1]葛勇.无碴轨列车运行引起的环境振动及舒适度研究[D].重庆:重庆大学,2010.
[2]王常晶.列车移动荷载作用下地基的动应力及饱和软粘土特性研究[D].杭州:浙江大学,2006.
[3]申跃奎.地铁激励下振动的传播规律及建筑物隔振减振研究[D].上海:同济大学,2007.
[4]Kurzweil,L.Ground-borne noise and vibration from underground rail systems[J].Journal of sound and vibration,1979.,66(3):363-370.
[5]Takemiya,H.,A.Fujiwara.Wave propagation/im-pediment in a stratum and wave impeding block(WIB)measured for SSI response reduction[J].Soil Dynamics and Earthquake Engineering,,1994.,13(1):49-61.
[6]Melke,J.Noise and vibration from underground railway lines:proposals for a prediction procedure[J].Jour-nal of sound and vibration,1988.,120(2):391-406.
[7]Ahmad,S.,T.Al-Hussaini.Simplified design for vi-bration screening by open and in-filled trenches[J].Journal of Geotechnical Engineering,1991.,117(1):67-88.
[8]Jones,C.J.C.,Thompson,D.J.,Petyt,M.Studies using a combined finite element and boundary element model for vibration propagation from railway tunnels[C].QQProceedings of the Seventh International Congress on Sound and Vibration,Garmisch-Partenkirchen,Germany,July4-7,2000.Germany,International Institute of Acous-tics and Vibration(IIAV),2703-2710.
[9]杨永斌.高速列车所引致之土壤振动分析[D].台湾:台湾大学,1996.
[10]Yang,Y.,H.Hung.A parametric study of wave barriers for reduction of train-induced vibrations[J].Inter-national Journal for Numerical Methods in Engineering,1998.,40(20):3729-3747.
[11]刘金.地铁振动在土层中的传播特性研究[D].沈阳:沈阳工业大学,2009.
[12]和振兴.板式无砟轨道交通引起的环境振动研究[D].成都:西南交通大学,2008.
[13]夏禾,吴萱.城市轨道交通系统引起的环境振动问题[J].北方交通大学学报,1999.,23(004):1-7.
[14]谢伟平,兰洋.2.5维有限元法分析地铁列车引起的地基振动[J].武汉理工大学学报,2009(013):78-82.
[15]陶连金,张丁盛.地铁诱发地面运动的衰减规律的研究分析[J].世界地震工程,2003.,19(001):83-87.
[16]李晓霖.地铁诱发振动对地面以及地上结构的影响规律研究[D].北京:北京工业大学,2003.
[17]He,X.Study of vibration effects of underground trains upon surrounding environments[J].Advances in Structural Engineering,1995,3:116-122.
[18]崔正翔,嵇正毓.地铁隧道振动对地面环境影响预测的探讨[J].噪声与振动控制,1996(001):9-14.
[19]Forrest,J.,H.Hunt.Ground vibration generated by trains in underground tunnels[J].Journal of sound and vi-bration,2006.,294(4-5):706-736.
[20]沈霞.地铁振动计算分析中的若干问题研究[D].上海:同济大学,2005.
[21]吴良芝.结构有限元的修正解[J].固体力学学报,1981.,2(4):457-467.
[22]沈聚敏,周锡元,高小旺,等.抗震工程学[M].北京:中国建筑工业出版社.,2000.
[2]王常晶.列车移动荷载作用下地基的动应力及饱和软粘土特性研究[D].杭州:浙江大学,2006.
[3]申跃奎.地铁激励下振动的传播规律及建筑物隔振减振研究[D].上海:同济大学,2007.
[4]Kurzweil,L.Ground-borne noise and vibration from underground rail systems[J].Journal of sound and vibration,1979.,66(3):363-370.
[5]Takemiya,H.,A.Fujiwara.Wave propagation/im-pediment in a stratum and wave impeding block(WIB)measured for SSI response reduction[J].Soil Dynamics and Earthquake Engineering,,1994.,13(1):49-61.
[6]Melke,J.Noise and vibration from underground railway lines:proposals for a prediction procedure[J].Jour-nal of sound and vibration,1988.,120(2):391-406.
[7]Ahmad,S.,T.Al-Hussaini.Simplified design for vi-bration screening by open and in-filled trenches[J].Journal of Geotechnical Engineering,1991.,117(1):67-88.
[8]Jones,C.J.C.,Thompson,D.J.,Petyt,M.Studies using a combined finite element and boundary element model for vibration propagation from railway tunnels[C].QQProceedings of the Seventh International Congress on Sound and Vibration,Garmisch-Partenkirchen,Germany,July4-7,2000.Germany,International Institute of Acous-tics and Vibration(IIAV),2703-2710.
[9]杨永斌.高速列车所引致之土壤振动分析[D].台湾:台湾大学,1996.
[10]Yang,Y.,H.Hung.A parametric study of wave barriers for reduction of train-induced vibrations[J].Inter-national Journal for Numerical Methods in Engineering,1998.,40(20):3729-3747.
[11]刘金.地铁振动在土层中的传播特性研究[D].沈阳:沈阳工业大学,2009.
[12]和振兴.板式无砟轨道交通引起的环境振动研究[D].成都:西南交通大学,2008.
[13]夏禾,吴萱.城市轨道交通系统引起的环境振动问题[J].北方交通大学学报,1999.,23(004):1-7.
[14]谢伟平,兰洋.2.5维有限元法分析地铁列车引起的地基振动[J].武汉理工大学学报,2009(013):78-82.
[15]陶连金,张丁盛.地铁诱发地面运动的衰减规律的研究分析[J].世界地震工程,2003.,19(001):83-87.
[16]李晓霖.地铁诱发振动对地面以及地上结构的影响规律研究[D].北京:北京工业大学,2003.
[17]He,X.Study of vibration effects of underground trains upon surrounding environments[J].Advances in Structural Engineering,1995,3:116-122.
[18]崔正翔,嵇正毓.地铁隧道振动对地面环境影响预测的探讨[J].噪声与振动控制,1996(001):9-14.
[19]Forrest,J.,H.Hunt.Ground vibration generated by trains in underground tunnels[J].Journal of sound and vi-bration,2006.,294(4-5):706-736.
[20]沈霞.地铁振动计算分析中的若干问题研究[D].上海:同济大学,2005.
[21]吴良芝.结构有限元的修正解[J].固体力学学报,1981.,2(4):457-467.
[22]沈聚敏,周锡元,高小旺,等.抗震工程学[M].北京:中国建筑工业出版社.,2000.
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