Influence of Ballastless Track Structure on Aerodynamic Performance of Super High Speed Train

Abstract

Based on the aerodynamics, this paper simulates a super high speed train with the speed of 600km/h through bridge laying plate or frame type ballastless track, analyses the influence of plate or frame type ballastless track on aerodynamic performance. Results show that the pressure at the Equipment module, the bogie and the apron is negative, and the pressure of the plate type is larger than frame type. Near the head’s bogie, the pressure of the plate type is larger than the frame type. The mediate and tail’s negative pressure of frame type is smaller than the plate type. The Super High Speed Train’s resistance of frame type is superior to the plate type. The tail’s lift of frame type is inferior to the plate type. At present, all countries in the world are strongly developing rail transportation, especially the development of high-speed rail. There are many forms of high-speed railway, such as ballasted track, ballastless track, magnetic suspension railway, etc[1]. Ballastless track structure is the main route of high-speed railway in China[2]. At present, most researches are concerned with the dynamic analysis of ballastless track of high speed railway[3-4]. The research on influence of ballastless track structure on aerodynamic performance of super high speed train has not been reported. Based on the aerodynamics, this paper simulates a super high speed train with the speed of 600km/h through bridge laying plate or frame type ballastless track, analyses the influence of plate or frame type ballastless track on aerodynamic performance.