Line-side Pressure Field Test of the Passage of Metro Train

In view of a certain type of metro train, the test of the air pressure change on the line side of the train is carried out under the 130km/h speed level, the time history curves of the air pressure changes at different heights above the top of the rail are obtained. Through the analysis: with the increase of the height of the measuring points, the peak to peak value of the pressure fluctuation caused by the subway train passing decreased in turn, and the peak to peak value of the pressure fluctuation of the measuring point nearest from the track surface was the largest, and △P95% reaches to 282.2Pa.