In order to research the aerodynamic characteristics (AC) of High-speed-train (HST) running on half-embankment and half-cutting transition section (HEHCTS) under crosswind, a CRH3 HST is taken as the object. The AC of the HST running at four speeds and under crosswind action with five speeds are numerically investigated, respectively, the correlation changing rules between the HST AC and the HST speed or crosswind speed were obtained. When the HST runs on HEHCTS at different speeds and under different-speed crosswind, the lateral forces (LFs) and overturning moments (OMs) acted on the head carriage are the largest; with the increase of crosswind speed or HST speed, the increases of the LFs and OMs on the head carriage are the largest; when the HST speed is 350km/h or the crosswind speed is 30m/s, the AC parameters of carriages have cubic relationships with the crosswind speed or HST speed; crosswind speed has greater influence on HST’s AC than HST speed.

CICTP