西南交通大学学报2026，Vol.61Issue(1)：253-264,12.DOI:10.3969/j.issn.0258-2724.20240219
风阻制动装置纵向布局密度对高速列车制动效果的影响
Influence of Longitudinal Layout Density of Aerodynamic Braking Devices on Braking Effect of High-Speed Trains
摘要
Abstract
To further investigate the synergistic layout of aerodynamic braking devices on high-speed trains operating at 400 km/h and above and to clarify the overall braking benefit and efficiency of aerodynamic braking systems suitable for China's current standard trainsets,the shape of the CR400AF platform and the configuration of its basic braking system were taken as a reference.Different numbers of"butterfly-type"aerodynamic braking devices were installed,and the aerodynamic characteristics of high-speed trains equipped with such devices under different operating conditions were simulated and calculated.A direct integration method applicable to aerodynamic braking problems was proposed.The braking performance of trains relying solely on aerodynamic braking devices at a given initial speed was compared with coasting to stop,and the braking effect was analyzed.Train braking equations were established,and the segmented accumulation method was used to calculate the braking distance and time when aerodynamic braking was combined with service braking and emergency braking.The results show that the installation of aerodynamic braking devices significantly increases the overall aerodynamic resistance of trains,and higher layout density leads to stronger aerodynamic interference between front and rear braking plates.The composite braking method combining aerodynamic braking effectively compensates for insufficient adhesive braking force at high speed,while addressing the low braking efficiency of aerodynamic braking at low speed.The combined braking distance is proportional to the square of the speed,and the braking time is proportional to the speed.With combined aerodynamic braking,the emergency braking distance from an initial speed of 350 km/h can be reduced to 5 500 m or below.关键词
高速列车/空气动力学/风阻制动装置/制动距离/制动时间/紧急制动/常用制动Key words
high-speed train/aerodynamics/aerodynamic braking device/braking distance/braking time/emergency braking/service braking分类
交通工程引用本文复制引用
谢红太,王红..风阻制动装置纵向布局密度对高速列车制动效果的影响[J].西南交通大学学报,2026,61(1):253-264,12.基金项目
国家自然科学基金项目(72061022) （72061022）
甘肃省重点研发计划(23YFGA0040) （23YFGA0040）
