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

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.