华东交通大学学报2025，Vol.42Issue(5)：83-92,10.
横风作用下桥上更高速度列车行车安全性分析
Analysis of Train Safety Under Crosswind Effects at Higher Speeds on Bridges
摘要
Abstract
In order to reveal the safety mechanism of higher speed trains on the bridge under crosswind,a high-speed train-bridge aerodynamic model was established using CFD software to calculate the aerodynamic loads on the train and bridge based on fluid dynamics and vehicle dynamics theories.Using the co-simulation technolo-gy of multibody dynamics software UM and finite element analysis software Ansys,a high-speed train-track-bridge system dynamic model was developed.The aerodynamic loads on the train and bridge were applied as ex-ternal excitations and input into the train-track-bridge system dynamics model to simulate the entire operational process of high-speed trains on bridges under crosswind conditions.The study analyzed the impact of wind speed and train speed on the operational safety of higher-speed trains.The results show that under crosswind condi-tions,the lateral displacement of the train body,lateral wheelset force,vertical wheel-rail force,derailment coeffi-cient,wheel load reduction rate,and lateral displacement at the mid-span of the bridge all increase significantly compared to no-wind conditions.When the wind speed is slower than12 m/s and the train speed is 350～400 km/h,the safety indicators for train operation remain relatively low,and the lateral displacement at the bridge mid-span shows moderate variation.When the wind speed is fast er than 15 m/s and the train speed is between 350～420 km/h,the safety indicators of the train increase sharply,especially for trains traveling at speeds above 400 km/h,where the lateral interaction between the wheel and rail becomes more pronounced,resulting in an expo-nential increase in the lateral displacement at the bridge mid-span.The above research results can provide a theo-retical basis and basic data for ensuring the running safety of high-speed trains on bridges under the influence of crosswinds.关键词
铁道工程/高速铁路桥梁/横风作用/行车安全性Key words
railway engineering/high-speed railway bridges/crosswind effect/running safety分类
交通工程引用本文复制引用
王雄标,刘军华,颜建鹏,唐清华,龚凯,郭文杰..横风作用下桥上更高速度列车行车安全性分析[J].华东交通大学学报,2025,42(5):83-92,10.基金项目
江西省自然科学基金项目(20224BAB204065) （20224BAB204065）
