地铁减振板式轨道动力测试与减振特性研究
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摘要
地铁减振板式轨道作为一种新型轨道结构,具有质量高、施工快、维修少等特点,在地铁线路中逐渐得到推广应用。为揭示地铁板式轨道减振效果,选取天津地铁5号线板式轨道、现浇整体道床断面,采用现场试验和数值模拟方法,对其动力学行为和减振特性进行研究。结果表明:与现浇整体道床相比,地铁板式轨道降低了轮轨横、垂向力和安全性指标,有利于行车安全;由于板式轨道整体刚度较低,钢轨垂向位移略有增加;板式轨道与整体道床结构振动由上至下依次减小,且板式轨道减小幅度更为显著;与现浇整体道床相比,除轨道板振动加速度增大外,其余结构加速度均一定程度减小;板式轨道隧道壁处时域上减振明显,频域上全频段减振,最高减振达16.92 dB。
The vibration damping slab track, as a new type of track structure, has the characteristics of high quality, fast construction and less maintenance, and is applied extensively in subway lines. In order to reveal the vibration reduction effect of subway slab track, field tests and numerical simulation method are employed on the vibration damping slab track and the common ballastless track of Tianjin Subway Line 5 for studying the dynamic indexes and damping characteristics. Results show that the subway vibration damping slab track reduces the wheel-rail lateral and vertical forces and safety index, which is beneficial to the safety of the train operation compared with the common ballastless track. As the overall stiffness of the slab track decreases, the rail vertical displacement increases slightly. The vibrations of the slab track and the common ballastless track decrease from top to bottom in turn, and the decrease of the slab track vibration is more remarkable. Except for the increase of vibration acceleration of the track slab, the accelerations of all other structures are reduced to some extend. The vibration reduction effect is obvious at the tunnel wall of the slab track in time domain. Vibration reduction works in full frequency domain and reaches up to 16.92 dB.
The vibration damping slab track, as a new type of track structure, has the characteristics of high quality, fast construction and less maintenance, and is applied extensively in subway lines. In order to reveal the vibration reduction effect of subway slab track, field tests and numerical simulation method are employed on the vibration damping slab track and the common ballastless track of Tianjin Subway Line 5 for studying the dynamic indexes and damping characteristics. Results show that the subway vibration damping slab track reduces the wheel-rail lateral and vertical forces and safety index, which is beneficial to the safety of the train operation compared with the common ballastless track. As the overall stiffness of the slab track decreases, the rail vertical displacement increases slightly. The vibrations of the slab track and the common ballastless track decrease from top to bottom in turn, and the decrease of the slab track vibration is more remarkable. Except for the increase of vibration acceleration of the track slab, the accelerations of all other structures are reduced to some extend. The vibration reduction effect is obvious at the tunnel wall of the slab track in time domain. Vibration reduction works in full frequency domain and reaches up to 16.92 dB.
引文
[1]Zhao Caiyou,Wang Ping,Xi Sheng,et al.Theoretical simulation and experimental investigation of a rail damper to minimize short-pitch rail corrugation[J].Mathematical Problems in Engineering,2017(1):1-14.
[2]钟贞荣,罗科炎,杨仕教,等.整体道床病害分析与整治[J].华东交通大学学报,2007,24(2):37-40.
[3]于春华.城轨交通整体道床病害及整治[J].铁道工程学报,2008,25(12):83-86.
[4]安国栋.高速铁路精密工程测量技术标准的研究与应用[J].铁道学报,2010,32(2):98-104.
[5]Ando K,Sunaga M,Aoki H,et al.Development of slab track for Hokuriku Shinkansen line[J].Quarterly Report of RTRI,2001,42(1):35-41.
[6]翟婉明,韩卫军,蔡成标,等.高速铁路板式轨道动力特性研究[J].铁道学报,1999(6):65-69.
[7]Gharighoran A,Hamidi A,Rafizadeh A.Investigation of the subway slab tracks under different loading conditions,Case Study:Isfahan Subway[J].Gut,2012,32(7):784-786.
[8]高文虎,李刚.广州地铁4号线高架线板式道床铺设应用[J].铁道标准设计,2007(7):51-53.
[9]Cai Xiaopei,Li Dacheng,Zhang Yanrong,et al.Experimental study on the vibration control effect of long elastic sleeper track in subways[J].Shock&Vibration,2018,526:1-13.
[10]李克飞,刘维宁,孙晓静,等.北京地铁5号线高架线减振措施现场测试与分析[J].中国铁道科学,2009,30(4):25-29.
[11]翟婉明.车辆-轨道耦合动力学[M].北京:科学出版社,2007.
[12]郑国琛,祁皑.福州地铁运行引起的环境振动加速度预测分析[J].工程力学,2015,32(S1):331-336,341.
[13]Xue Yiguo,Li Shucai,Zhang Dunfu,et al.Vibration characteristics and environmental responses of different vehicle-track-ballast coupling systems in subway operation[J].Journal of Vibroengineering,2014,16(5):2458-2473.
[14]陆文教,陶功权,王鹏,等.地铁车轮磨耗对轮轨接触特性及动力学性能的影响[J].工程力学,2017,34(8):222-231.
[15]蔡小培,谭诗宇,沈宇鹏,等.隧道内有砟轨道铺设弹性轨枕的动力特性分析[J].铁道学报,2018,40(1):87-93.
[16]Wu Lei,Wen Zefeng,Li Wei,et al.Thermo-elastic-plastic finite element analysis of wheel/rail sliding contact[J].Wear,2011,271(1):437-443.
[17]Zhao Xin,Zhao Xiaogang,Liu Chao,et al.A study on dynamic stress intensity factors of rail cracks at high speeds by a 3D explicit finite element model of rolling contact[J].Wear,2016,366-367:60-70.
[18]刘卫丰,刘维宁,袁扬,等.地铁列车与道路车辆运行对环境的振动影响现场测试与分析[J].铁道学报,2013,35(5):80-84.
[19]王媛,曹广忠,匡如华.深圳地铁轨道减振性能测试与分析[J].铁道标准设计,2013,57(7):29-32.
[20]林渝轲,吴梦瑶,王平.120 km/h地铁多种减振轨道结构现场测试与分析[J].铁道标准设计,2018,62(2):67-71.
[2]钟贞荣,罗科炎,杨仕教,等.整体道床病害分析与整治[J].华东交通大学学报,2007,24(2):37-40.
[3]于春华.城轨交通整体道床病害及整治[J].铁道工程学报,2008,25(12):83-86.
[4]安国栋.高速铁路精密工程测量技术标准的研究与应用[J].铁道学报,2010,32(2):98-104.
[5]Ando K,Sunaga M,Aoki H,et al.Development of slab track for Hokuriku Shinkansen line[J].Quarterly Report of RTRI,2001,42(1):35-41.
[6]翟婉明,韩卫军,蔡成标,等.高速铁路板式轨道动力特性研究[J].铁道学报,1999(6):65-69.
[7]Gharighoran A,Hamidi A,Rafizadeh A.Investigation of the subway slab tracks under different loading conditions,Case Study:Isfahan Subway[J].Gut,2012,32(7):784-786.
[8]高文虎,李刚.广州地铁4号线高架线板式道床铺设应用[J].铁道标准设计,2007(7):51-53.
[9]Cai Xiaopei,Li Dacheng,Zhang Yanrong,et al.Experimental study on the vibration control effect of long elastic sleeper track in subways[J].Shock&Vibration,2018,526:1-13.
[10]李克飞,刘维宁,孙晓静,等.北京地铁5号线高架线减振措施现场测试与分析[J].中国铁道科学,2009,30(4):25-29.
[11]翟婉明.车辆-轨道耦合动力学[M].北京:科学出版社,2007.
[12]郑国琛,祁皑.福州地铁运行引起的环境振动加速度预测分析[J].工程力学,2015,32(S1):331-336,341.
[13]Xue Yiguo,Li Shucai,Zhang Dunfu,et al.Vibration characteristics and environmental responses of different vehicle-track-ballast coupling systems in subway operation[J].Journal of Vibroengineering,2014,16(5):2458-2473.
[14]陆文教,陶功权,王鹏,等.地铁车轮磨耗对轮轨接触特性及动力学性能的影响[J].工程力学,2017,34(8):222-231.
[15]蔡小培,谭诗宇,沈宇鹏,等.隧道内有砟轨道铺设弹性轨枕的动力特性分析[J].铁道学报,2018,40(1):87-93.
[16]Wu Lei,Wen Zefeng,Li Wei,et al.Thermo-elastic-plastic finite element analysis of wheel/rail sliding contact[J].Wear,2011,271(1):437-443.
[17]Zhao Xin,Zhao Xiaogang,Liu Chao,et al.A study on dynamic stress intensity factors of rail cracks at high speeds by a 3D explicit finite element model of rolling contact[J].Wear,2016,366-367:60-70.
[18]刘卫丰,刘维宁,袁扬,等.地铁列车与道路车辆运行对环境的振动影响现场测试与分析[J].铁道学报,2013,35(5):80-84.
[19]王媛,曹广忠,匡如华.深圳地铁轨道减振性能测试与分析[J].铁道标准设计,2013,57(7):29-32.
[20]林渝轲,吴梦瑶,王平.120 km/h地铁多种减振轨道结构现场测试与分析[J].铁道标准设计,2018,62(2):67-71.