To explore the aerodynamic load characteristics of trains under side wind environments,the model of the longitudinal and lateral components of wind velocity at a point moving with the train for any wind angle was set up.The computational method of aerodynamic loads of the train exposed to wind velocity with longitudinal and lateral components was studied.The aerodynamic load characteristics of the train at a speed of 200-400 km/h,mean wind speed of 10-35 m/s,and wind angle of 30°-150°were analyzed.The results show that under different wind angles,when the lateral component of wind velocity is considered,the aerodynamic load of high-speed trains fluctuates greatly,leading to an increase in the extreme value of instantaneous aerodynamic load acting on the train.The lateral component of wind velocity mainly affects the standard deviation of aerodynamic loads of the train,and the influence has much relationship with wind angle.The influence becomes smaller when the wind angle is closer to the critical wind angle and becomes larger when the wind angle is far away from the critical wind angle.Under different wind angles,the ratio of standard deviation to mean value of aerodynamic load of the train mainly depends on the yaw angle.The ratio is relatively large at wind angles of 30°and 150°,followed by wind angles of 60°and 120°,but it is relatively small at wind angles of 90°.
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