Experiment study of pressure pulse caused by trains passing each other on Guangzhou-Shenzhen railway for the sixth speed-up

To support the sixth speed-up of railways all over the country,the Dgroup and the 25-type speed-up passenger trains were used to make full scale tests for the pressure pulse and the pressure change inside the train caused by trains passing each other with different speeds on Guang zhou-Shen zhen railway with the track interval being 4.0m.The variation rules of the pressure pulse with respect to the train speed were obtained.The safety of the trains and the comfort of passengers were assessed for two D-group trains passing each other at equal speeds,and one D-group train and one 25-type train passing each other at unequal speeds.The results show that under the condition that the track interval is 4.0m,there will be no impact on the trains' safety and the passengers' comfort when trains passing each other for the D-group train which runs at the speed of 220 km/h.Thus the plan for speed-up is feasible.