大风环境下动车组行车车载控制参数研究

On EMU Train Operation & Load-carrying Control Parameters in High Wind Environment

由于车体轻量化设计和运行速度的提高,与普速列车相比气动载荷对动车组的扰动效应更强,动车组在大风环境下的运行稳定性问题凸显。分析大风环境下动车组运行稳定性,结合实车试验和仿真计算,研究车体振动参数与运行稳定性指标的关联性,提出以车体横向加速度导数和侧滚角速度作为大风环境下动车组车载关键控制参数,二者在很大程度上能够反映大风环境下动车组爬轨安全性和倾覆安全性。考虑到一定的安全裕量,动车组车体横向加速度导数和侧滚角速度的限值分别确定为8 m/s3和5°/s。

Due to lightweight design of the train body and increase of running speed of the train,aerodynamic load exerts a stronger perturbing effect on EMU trains than on conventional speed ones,thus the operational stability of EMU trains running in high wind becomes an issue.Based on tests on real trains and simulation calculation,this paper examines operation stability of EMU trains running in high wind and the relationship between vibration parameters and the running stability indexes of the train body,puts forward the idea that the train body lateral acceleration derivative and the side-roll angular speed,which to a large extent are able to show safety in terms of rail-climbing and overturning of EMU trains in high wind,shall be the EMU train loadcarrying key control parameters.Taking into account the safety margin,the paper concludes that the train body lateral acceleration derivative and side-roll angular speed shall be 8 m/s3 and 5 °/s respectively.