Method for evaluating braking safety speed threshold value of high-speed train assembled with wind resistance braking device in crosswind environment

The invention discloses a braking safety speed threshold evaluation method for a high-speed train equipped with wind resistance braking devices in a crosswind environment, which comprises the following steps: by taking a CR400AF platform standard motor train unit as a reference, assembling eight sets of butterfly-shaped wind resistance braking devices, and respectively establishing a high-speed train aerodynamic model with the wind resistance braking devices and a train track system dynamics model under the action of crosswind; the dynamic behavior of the high-speed train with the wind resistance braking device under the wind load effect is jointly calculated, and a wind resistance braking safety speed threshold value is determined through train driving safety index evaluation; according to the method for evaluating the braking safety speed threshold value of the high-speed train assembled with the wind resistance braking device in the crosswind environment, braking safety reference can be provided for develo