Field test measurement of the dynamic tightness performance of high-speed trains and study on its influencing factors
Journal article, 2019

During the actual operation of a high-speed train, the airtight performance of the carriages will change significantly. Based on a series of field tests, the external and interior pressure variations of train carriages are measured and then the dynamic pressure tightness coefficient are analysed quantitatively for investigating the airtight performance of a train passing at various speeds through tunnels of different lengths. It is found that the amplitude of the external pressure variations is proportional to the square of the train speed, while the amplitude inside the vehicle is approximately proportional to the speed to the 0.7th power due to the airtight effect. The dynamic pressure tightness coefficient increases with increasing tunnel length and decreases with increasing train speed. Regarding the effect of the carriage location, the coefficient shows an overall increasing trend from the train head to tail.

Field test

High-speed train

Dynamic pressure tightness coefficient

Tunnel

Pressure variation

Author

Tang hong Liu

National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle

Central South University

Joint International Research Laboratory of Key Technology for Rail Traffic Safety

Mingyang Chen

National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle

Central South University

Joint International Research Laboratory of Key Technology for Rail Traffic Safety

Xiao dong Chen

University of Manchester

Shengen Geng

National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle

Joint International Research Laboratory of Key Technology for Rail Traffic Safety

Central South University

Zhen hua Jiang

Joint International Research Laboratory of Key Technology for Rail Traffic Safety

National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle

Central South University

Sinisa Krajnovic

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Measurement: Journal of the International Measurement Confederation

0263-2241 (ISSN)

Vol. 138 602-613

Subject Categories

Sport and Fitness Sciences

Infrastructure Engineering

Vehicle Engineering

DOI

10.1016/j.measurement.2019.02.051

More information

Latest update

4/15/2019