Study on the Influence of Aerodynamic Effect of High-speed Maglev Train Crossing Underground Tunnel Station

Yinxiao Liao

doi:10.54097/e1mnv294

Authors

Yinxiao Liao

DOI:

https://doi.org/10.54097/e1mnv294

Keywords:

Vertical shaft, high-speed maglev train, aerodynamic effect, pressure wave.

Abstract

The maximum speed of rail trains with a traditional wheel-rail contact relationship is limited. Under this background, high-speed maglev transportation with a higher speed level becomes a possible solution. With the increase in the operating speed of maglev trains, a series of aerodynamic problems have arisen, especially when the train passes through the underground tunnel station in the city, where the pressure wave problem is more prominent than on the open line. Therefore, it is necessary to study the formation mechanism of the pressure wave and the influence of aerodynamic effects when the high-speed maglev train passes through the tunnel station. In this paper, a three-dimensional finite element model of a high-speed maglev train-tunnel station is established, and the aerodynamic effect of a high-speed maglev train passing through the tunnel platform is studied and analyzed using the k−ε turbulence model. The main conclusions are as follows: the peak pressure of the train will increase with the increase of train speed, and the amplitude of its pressure wave head is related to the 2~3 power of train speed; Setting a vertical shaft next to the underground tunnel station will reduce the pressure on trains and stations to some extent, and the average pressure reduction rate can reach about 43%. Therefore, it is of great engineering significance to carry out this research on the construction of underground maglev train stations and to ensure the safe passage of high-speed maglev trains through underground stations.

Downloads

Download data is not yet available.

References

[1] Yu Haowei, Kou Junyu, Li Yan. Adaptability and engineering development of 600 km/h high-speed maglev in China [J]. Journal of Railway Engineering Society, 2020,37(12):16-20+88.

[2] Ren Kuishan. Preliminary study on aerodynamic effect of the buffer structure at the entrance of a 600km/h maglev railway tunnel [D]. Lanzhou Jiaotong University, 2021. DOI: 10.27205/d.cnki.gltec.2021.200800000003

[3] Zhang Jie, Wang Yuge, Han Shuai, et al. Analysis of the influence of buffer structure length on the pressure wave characteristics of a 600 km/h maglev train passing through the tunnel [J]. Journal of Central South University (Natural Science Edition), 2022,53(05):1668-1678.

[4] Yu Haowei, Kou Junyu, Li Yan. Adaptability and engineering development of 600 km/h high-speed maglev in China [J]. Journal of Railway Engineering Society, 2020,37(12):16-20+88.

[5] Tan Haiou, Feng Haiquan, WangZhifei, et al. Study on the influence of high-speed trains passing through the station on the surface air pressure load of the platform screen door [J]. Modern urban rail transit, 2022,(11):30-35.

[6] YAMAMOTO A. Aerodynamics of train in tunnel[C]// Japan: Proc Lecture Meeting of the RTRI, 1975: 13−16.

[7] HOWE M S. On the compression wave generated when a high-speed train enters a tunnel with a flared portal[J]. Journal of Fluids and Structures, 1999, 13(4): 481−498.

[8] Sun Z, Wang M Y, Wei L Y, et al. Aerodynamic shape optimization of an urban maglev train[J]. 2021.DOI:10.1007/s10409-021-01094-y.

[9] Liu M, Wu H, Xu J, et al. Research on sliding mode controller of the high-speed maglev train under aerodynamic load[J]. Advances in Mechanical Engineering (Sage Publications Inc.), 2022. DOI:10.1177/16878132221127857.

[10] Che Z, Huang S, Li Z, et al. Aerodynamic drag reduction of high-speed maglev train based on air blowing/suction[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2023.DOI:10.1016/j.jweia.2023.105321.

[11] Han Huaxuan. Study on Aerodynamic Effects and Mitigation Measures of High-speed Railway Underground Station Tunnel [D]. Southwest Jiaotong University, 2010.

[12] Xie Hongtai. Numerical simulation analysis of surface pressure distribution of 350 km/h high-speed train passing through extra-long double-track tunnel [J]. Journal of East China Jiaotong University, 2019,36 (04): 24-31. doi: 10.16749/j.cnki.jecjtu.2019.04.004.

[13] Zhao J, Li R. A STUDY OF AERODYNAMIC EFFECTS OF HIGH-SPEED TRAINS THROUGH TUNNELS[C]//International Conference on Civil Engineering and Transportation 2011.

[14] Friedl H, Reiterer M, Kari H. Analysis of Aerodynamic Impact induced by High Speed Trains[C]//The Fourteenth International Conference on Civil, Structural and Environmental Engineering. 2013.DOI:10.4203/ccp.102.26.

[15] Liang X F, Chen G, Li X B, et al. Numerical simulation of pressure transients caused by high-speed train passage through a railway station[J]. Building and Environment, 2020:107228. DOI: 10.1016/j.buildenv.2020.107228.

[16] Zhou D, Tian H Q, Zhang J, et al. Pressure transients induced by a high-speed train passing through a station - ScienceDirect[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2014, 135:1-9. DOI:10.1016/j.jweia.2014.09.006.

[17] Kim J Y, Kim K Y. Experimental and numerical analyses of train-induced unsteady tunnel flow in subway[J]. Tunnelling & Underground Space Technology Incorporating Trenchless Technology Research, 2007, 22(2):166-172. DOI: 10.1016/j.tust.2006.06.001.

[18] Liu T H, Chen X D, Li W H, et al. Field study on the interior pressure variations in high-speed trains passing through tunnels of different lengths[J]. Journal of Wind Engineering and Industrial Aerodynamics,2017, 169:54-66. DOI: 10.1016/j.jweia.2017.07.004.

[19] Zhang H, Zhu C, Liu M, et al. Mathematical modeling and sensitive analysis of the train-induced unsteady airflow in subway tunnel[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2017, 171:67-78. DOI: 10.1016/j.jweia.2017.09.005.

[20] Liu T, Jiang Z, Chen X, et al. Wave effects in a realistic tunnel induced by the passage of high-speed trains [J]. Tunnelling & Underground Space Technology, 2019, 86(APR.): 224-235. DOI:10.1016/j.tust.2019.01.023.

[21] Zhang Jie, Wang Yuge, Han Shuai, et al. Analysis of the influence of buffer structure length on the pressure wave characteristics of a 600 km/h maglev train passing through the tunnel [J]. Journal of Central South University (Natural Science Edition), 2022,53(05):1668-1678.