中南大学学报（自然科学版）2026，Vol.57Issue(6)：2383-2397,15.DOI:10.11817/j.issn.1672-7207.2026.06.001
速度为400km/h的高速列车风对沿线受风构件的气动力效应研究
Aerodynamic effects of 400 km/h high speed train-induced wind on trackside wind-loaded structure
摘要
Abstract
With the operational velocity of high-speed railways approaching 400 km/h,the aerodynamic effects induced by train-induced winds on wind-loaded structures along railway lines have become increasingly significant.Based on CFD numerical simulation,the three-dimensional model of a train and wind-loaded structures was established.The reliability of the numerical model and the equivalent aerodynamic force method was validated by field measurements and high-speed railway design codes.The influence of train speed and train-to-structure distance on aerodynamic effects was investigated.Based on simulation results,a formula for aerodynamic forces of 400 km/h trains was derived and validated against standard curves.The results show that the equivalent integration method along the component length has minimal error and is applicable to 400 km/h speed scenarios.The head wave peak pressure is increased by 30.69%and 71.92%when the train speed is raised from 350 km/h to 400 km/h and 450 km/h,respectively.Conversely,the peak pressure is reduced by 83.34%when the distance is increased from 2.5 m to 7.5 m.The aerodynamic force is observed to be proportional to the square of the speed and inversely proportional to the 1.5 power of the distance.The aerodynamic force on wind-exposed components of a train traveling at 400 km/h can be determined by qh=ρv2k0Ds-1.5.The fitted aerodynamic force curve shows the same trend as the standard code,with an error within 10%.These findings establish critical references for wind-resistant design optimization of railway-side components in 400 km/h high-speed railway systems.关键词
列车风/受风构件/CFD数值模拟/表面风压/气动力Key words
train-induced wind/wind-loaded structures/CFD numerical simulation/surface wind pressure/aerodynamic force分类
交通工程引用本文复制引用
蔡陈之,许少鹏,何旭辉,邹云峰,艾宗良,彭福兵..速度为400km/h的高速列车风对沿线受风构件的气动力效应研究[J].中南大学学报（自然科学版）,2026,57(6):2383-2397,15.基金项目
国家自然科学基金资助项目(52378546) （52378546）
湖南省自然科学基金资助项目(2024JJ4065) （2024JJ4065）
长沙市科技计划项目(kq2306013) （kq2306013）
中国中铁股份有限公司科技研究开发计划项目(2022-重点-07,2023-重点-06)(Project(52378546)supported by the National Natural Science Foundation of China （2022-重点-07,2023-重点-06）
Project(2024JJ4065)supported by the Natural Science Foundation of Hunan Province （2024JJ4065）
Project(kq2306013)supported by the Science and Technology Program of Changsha （kq2306013）
Projects(2022-key-07,2023-key-06)supported by the China Railway Group Limited Science and Technology Research and Development Program) （2022-key-07,2023-key-06）
