列车在城际铁路地下段越行过站时的屏蔽门气动压力变化规律

Platform Screen Door Pneumatic Pressure Change Law of Train Passing Overtaking Station of Intercity Railway Underground Section

以福州至长乐机场城际铁路盖山路站为例,研究了列车从U型槽敞口段的洞口以100 km/h速度进入隧道后,以100 km/h的速度越行过站时屏蔽门的瞬态压力变化规律。研究结果表明:屏蔽门最大正压出现在列车车头经过屏蔽门时,最大负压出现在列车车尾经过屏蔽门时;列车经过屏蔽门产生的最大正压基本上沿进站端至出站端方向逐渐降低,最大负压的变化规律不明显;屏蔽门的最大正压为346 Pa,最大负压为-365 Pa;车头和车尾经过时,屏蔽门的压力非均匀分布,而车身经过时,屏蔽门的压力呈均匀分布。

Taking the Gaishan Road Station of Fuzhou-Changle Airport Intercity Railway as example,during the train entering the tunnel from the opening of U-shaped cutting at speed of 100 km/h,the transient pressure change law of platform screen doors when the train passing overtaking station is researched.Research results show that the maximum positive pressure of the screen door appears as the front of the train passes them,and the maximum negative pressure appears as the rear of the train passes them.The maximum positive pressure generated by the train passing through the screen door gradually decreases from the entry side to the exit side.However,the change law of the maximum negative pressure is not obvious.The maximum positive pressure of the screen door is 346 Pa,and the maximum negative pressure is-365 Pa.In addition,when the train front and rear pass,the pressure on the screen door is unevenly distributed,while when the train body passes,the pressure on the screen door is evenly distributed.