The low frequency noise radiated by trough girder structures in rail transit under dynamic load of trains is very harmful to human health.Taking a 30 m long rail transit trough girder simply supported as the study object, based on the vehicle-track coupled dynamic model, the vibration response of the trough girder under the action of train loads was calculated using the finite element method.Then, characteristics of the radiated noise of the trough girder structure were analyzed with the acoustic transfer vector method.Finally, contributions of the trough girder’s panels to radiated noise were studied.The results showed that both the peak frequency of the vertical vibration velocity level of the trough girder’s bottom deck and that of the transverse vibration velocity level of the trough girder’s web are 63 Hz, and the bottom deck’s vertical vibration response is the largest; the peak frequency of the linear sound pressure level of the trough girder structure-borne noise is near 63 Hz, its radiation region is the widest and its attenuation is the slowest at 63 Hz; the noise radiation main region is on the top and bottom of the girder, the noise on the top of the girder is larger than that on the bottom of the girder; the contribution of the girder bottom deck to noise is the largest, the second one is the girder web, and the influence of the girder flange slab on structure-borne noise is very small.
刘林芽，秦佳良，雷晓燕，刘全民，宋瑞，曾峰. 基于声传递向量法的槽形梁结构低频噪声研究[J]. 振动与冲击, 2018, 37(19): 132-138.
LIU Linya, QIN Jialiang, LEI Xiaoyan, SONG Rui, LIU Quan, ZENG Feng. Low frequency noise of a trough girder structure based on acoustic transfer vector method. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(19): 132-138.
[1] 刘加华,练松良. 城市轨道交通振动与噪声[J]. 交通运输工程学报,2002(1):29-33.
LIU Jia-hua, LIAN Song-liang. Vibration and noise of the urban rail transit[J]. Journal of Traffic and Transportation Engineering, 2002(1):29-33.
[2] 高飞,夏禾,安宁. 北京地铁5号线高架结构的辐射噪声分析与实验研究[J]. 中国铁道科学,2010(5):134-139.
GAO Fei, XIA He, AN Ning. Analysis and experimental study on the radiation noise of the elevated structures of Beijing metro line 5[J]. China Railway Science, 2010(5):134-139.
[3] CROCKETT A R, PYKE J. Viaduct Design For Minimization of Direct and Structure-radiated Train Noise[J]. Journal of Sound and Vibration, 2000, 231(3):883-897.
[4] Ngai K W, Ng C F. Structure-noise and vibration of concrete box structure and rail viaduct [J]. Journal of Sound and Vibration, 2002,255(2):281-297.
[5] Ouelaa Nourdine, Rezaiguia Abdelouahab, Laulagnet Bernard. Vibro-acoustic modelling of a railway bridge crossed by a train [J]. Applied Acoustics, 2006, 67(5):461-475.
[6] JEAN P, GABILLETUSING Y. A boundary element approach to study small screens close to rails [J]. Journal of Sound and Vibration, 2000, 231(3): 711-719.
[7] 李小珍,张迅,李亚东. 高速铁路简支箱梁结构噪声的边界元方法[J]. 土木工程学报,2011,(S1):95-101+185.
LI Xiaozhen, ZHANG Xun, LI Yadong. Application of boundary element method in study of noise from simply-supported box girder in high speed railway [J]. China Civil Engineering Journal, 2011(44): 95-101.
[8] 李奇,吴定俊. 混凝土桥梁低频结构噪声数值模拟与现场实测[J]. 铁道学报,2013,03:89-94.
LI Qi, WU Dingjun. Numerical simulation and field tests of concrete bridge-borne low-frequency noise [J]. Journal of the China Railway Society, 2013, 03: 89-94.
[9] 高飞,夏禾,曹艳梅,安宁.城市轨道交通高架结构振动与声辐射研究[J]. 振动与冲击,2012,04:72-76.
GAO Fei, XIA He, CAO Yanmei, AN Ning. Vibration and noise influences of elevated structures in urban railway [J]. Journal of Vibration and Shock, 2012, 04: 72-76.
[10] 雷晓燕.高速铁路轨道动力学—模型、算法与应用[M]. 北京：科学出版社，2015:85-94.
Lei Xiaoyan. High Speed Railway Track Dynamics: Model, Algorithm and Application [M]. Beijing: Science Press, 2015: 85-94.
[11] 韩江龙,吴定俊,李奇.城市轨道交通槽型梁结构噪声计算与分析[J]. 工程力学,2013,(02):190-195+202.
HAN Jiang-long, WU Ding-jun, LI Qi. Calculation and analysis of structure-borne noise from urban rail transit trough girders [J]. Engineering Mechanics, 2013, (02): 190-195+202.
[12] 李克冰,张楠,夏禾,苏伟,张雷,马广.高速铁路32m简支槽形梁桥结构噪声分析[J]. 中国铁道科学,2015,04:52-59.
LI Kebing, ZHANG Nan, XIA He, SU Wei, ZHANG Lei, MA Guang. Analysis on structure-borne noise of 32m simply-supported trough girder bridge for high speed railway [J]. China Railway Science, 2015, 04: 52-59.
[13] 刘林芽,吕锐,刘海龙.无砟轨道垂向高频振动响应分析[J].铁道科学与工程学报,2011,06:1-6.
LIU Linya, LU Rui, LIU Hailong. Vetical high frequency vibration response analysis of ballastless track[J]. Journal of Railway Science and Engineering,2011,06:1-6.
[14] Chen Y J，Ju S H，Ni S H， et al． Prediction methodology for ground vibration induced by passing trains on bridge structures［J］．Journal of Sound and Vibration，2007,302: 806－820.
[15] 高传伟，唐雅茹，余华． 基于移动荷载过桥的轨道交通桥梁振动研究[J]. 中国铁道科学，2005,26(2):73-76．
GAO Chuanwei, TANG Yaru, YU Hua. Study on the vibration of rail transit bridge based on moving load passing bridge[J]. China Railway Science,2005,26(2):73-76.
