Due to the influences of terrain, geology and underground buildings, subway tunnels usually use curved lines. However, there is relatively little research on the vibration attenuation of small-radius curved subway tunnels. The present study takes a small-radius section tunnel of Ningbo Metro Line 5 as an example, the vibration damping characteristics of floating slab track at the curved section are revealed by conducting on-site measurements on the vibration response of subway tunnel with fixed track or floating slab track. The research show that: The floating slab track can reduce the vibration acceleration of subway tunnel walls, but causes an increase in the vibration accelerations of rail and track bed. The floating slab track only has a damping effect on the acceleration level of the subway tunnel wall when the frequency is above 1.414 times the natural vibration frequency of floating slab. Below this limit frequency, the one-third octave acceleration level will increase. The vibration response in the small-radius subway tunnel is overall high-frequency vibration. The frequency range of rail is very wide, the center frequency of the vibration dominant frequency can be up to 4 000 Hz. The vibration dominant frequency of the track bed from the floating slab track is larger than that of the fixed track, with a center frequency of around 3 000 Hz. When the vibration is transmitted to the tunnel wall, the center frequency drops to below 1 200 Hz. Vertical vibration is still the main vibration form of the small-radius subway tunnel, however, the lateral vibration is significant since the peak lateral acceleration can reach half of the peak vertical counterpart, and the metro vibration response on the superelevation side is more significant than that on the underelevation side. The present research can provide a reference for the vibration reduction design of small-radius curved subway tunnels.
Cui Zhengyang
,
Huang Qiang
,
Zhang Yuxuan
,
Liu Ganbin
,
Qiu Bo
. Field Measurement Analysis on the Damping Characteristics of Floating Slab Track in a Small-Radius Metro Tunnel Section[J]. Chinese Journal of Underground Space and Engineering, 2026
, 22(1)
: 309
-316
.
DOI: 10.20174/j.JUSE.2026.01.32
[1] 张啟乐, 刘林芽, 李纪阳. 曲线地段地铁振动对邻近建筑的影响分析[J]. 噪声与振动控制, 2015, 35(4): 115-120. (Zhang Qile, Liu Linya, Li Jiyang. Analysis of the impact induced by vibration of curved segment of subways on adjacent buildings[J]. Noise and Vibration Contral, 2015, 35(4): 115-120. (in Chinese))
[2] 袁扬, 刘维宁, 刘卫丰. 基于现场测试的曲线段地铁地面振动传播规律[J]. 中国铁道科学, 2012, 33(4): 133-138.(Yuan Yang, Liu Weining, Liu Weifeng. Propagation law of ground vibration in the curve section of metro based on in-situ measurement[J]. China Railway Science, 2012, 33(4): 133-138. (in Chinese))
[3] 李昌. 曲线隧道内地铁列车运行引起的地表振动传播规律研究[D]. 北京: 北京交通大学, 2019.(Li Chang. Research on propagation rules of ground-borne vibration caused by subway trains in a curved tunnel[D]. Beijing: Beijing Jiaotong University, 2019. (in Chinese))
[4] 黄微波, 杨阳, 冯艳珠, 等. 轨道交通振动传播规律与减振措施研究进展[J]. 噪声与振动控制, 2016, 36(6): 101-105, 110. (Huang Weibo, Yang Yang, Feng Yanzhu, et al. Research advances of vibration propagation law and vibration reduction measures of rail transit[J]. Noise and Vibration Control, 2016, 36(6): 101-105, 110.
[5] 练松良, 尹学军. 浮置板轨道理论研究与实践[M]. 北京: 中国铁道出版社, 2021.(Lian Songliang, Yin Xuejun. Theoretical research and practice of floating plate tracks[M]. Beijing: China Railway Press, 2021. (in Chinese))
[6] Lei X Y, Jiang C J. Analysis of vibration reduction effect of steel spring floating slab track with finite elements[J]. Journal of Vibration and Control, 2014, 22(6): 1462-1471.
[7] Ma L X, Liu W N. A numerical train-floating slab track coupling model based on the periodic-Fourier-modal method[J]. Proceedings of the Institution of Mechanical Engineering Part F: Journal of Rail and Transit, 2018, 232(1): 315-334.
[8] Ling L, Jiang P B, Wang K Y, et al. Dynamic interaction between rail vehicles and vibration-attenuating slab tracks[J]. Construction and Buildings, 2020, 258(3-5): 1195454.
[9] Zhang X H, Zhou S H, Di H G, et al. A semi-analytical model of the train-floating slab track-tunnel-soil system considering the non-linear wheel/rail contact[J]. Proceedings of the Institution of Mechanical Engineering Part F: Journal of Rail and Rapid Transit, 2018, 232(8): 2063-2078.
[10] 李建敏. 曲线段浮置板轨道结构的力学性能分析[D]. 大连: 大连交通大学, 2016.(Li Jianmin. Mechanical property analysis on the structure of the curve segment floating slab track[D]. Dalian: Dalian Jiaotong University, 2016. (in Chinese))
[11] 何鉴辞. 地铁曲线地段环境振动预测及控制研究[D]. 成都: 西南交通大学, 2019. (He Jianci prediction and control environmental vibration in curved section of metro[D]. Chengdu: Southwest Jiaotong University, 2019. (in Chinese))
[12] 王刘翀, 刘冬娅, 易强, 等. 曲线地段钢弹簧浮置板轨道振动特性试验研究[J]. 铁道科学与工程学报, 2019, 16(3): 610-619. (Wang Liuchong, Liu dongya, Yi Qiang, et al. Field test on vibration characteristic of steel-spring floating slab track in curve section[J]. Journal of Railway Science and Engineering, 2019, 16(3): 610-619. (in Chinese))
[13] 靳永福, 傅荣, 查国涛, 等. 地铁小半径曲线地段钢弹簧浮置板轨道振动特性测试及分析[J]. 铁道建筑, 2020, 60(12): 126-129.(Jin Yongfu, Fu Rong, Zha Guotao, et al. Test and analysis on vibration characteristics of steel spring floating slab track in small radius curve section of metro[J]. Railway Engineering, 2020, 60(12): 126-129. (in Chinese))
[14] Ma L X, Ouyang H J, Sun C, et al. A curved 2.5D model for simulating dynamic responses of coupled track-tunnel-soil system in curved section due to moving loads[J]. Journal of Sound and Vibration, 2019, 451: 1-31.
[15] Huang S, Chen Y K, Zou C, et al. Train-induced environmental vibrations by considering different building foundations along curved track[J]. Transportations Geotechnics, 2022,7(35): 100785.
[16] 中华人民共和国行业标准编写组. 城市区域环境振动标准(GB10070-88)[S]. 北京: 中国标准出版社, 1989.(Industry Standards Compilation Group of the People's Republic of China. Environmental vibration standard for urban areas (GB10070-88) [S]. Beijing: Standards Press of China, 1989.(in Chinese))
[17] 黄强, 姚湘静, 黄宏伟, 等. 地铁运行时轨道—隧道—地层振动实测与分析[J]. 振动、测试与诊断, 2018, 38(2): 250-256.(Huang Qiang, Yao Xiangjing, Huang Hongwei, et al. Field measurement and analysis of train-induced vibration in the whole track-tunnel-ground system[J]. Journal of Vibration, Measurement & Diagnosis, 2018, 38(2): 250-256. (in Chinese))
[18] Kuo M C, Huang C H, Chen Y Y. Vibration characterisitcs of floating slab track[J]. Journal of Sound and Vibration, 2008, 317(3-5): 1017-1034.
[19] 黄强, 冯青松, 黄宏伟, 等. 移动简谐荷载下浮置板轨道—隧道—地基模型二维振动响应研究[J]. 应用基础与工程科学学报, 2023, 31(3): 663-674.(Huang Qiang, Feng Qingsong, Huang Hongwei, et al. 2d dynamic response of floating slab track-tunnel-ground model under moving harmonic load[J].Journal of Basic Science and Engineering, 2023, 31(3): 663-674. (in Chinese))
