Study On The Aerodynamic Effects Of High-Spped Railway Tunnel And Underground Stations With Platform Screen Doors

As a new mode of transportation in the new century, the high-speed railway appears and develops by no accident. It is a product of economic development, scientific and technological progress as well as intense competition between railway and other modes of transportation. The appearance of high-speed railway made the railway, the representative of the traditional landing wheel-track system, enter a new stage of development. In October 1964, Japan had built up successfully the Tokaido Shinkansen , which featured total length of 515.4 km from Tokyo to Osaka, with the running speed of 210 km per hour. Since then, the high-speed railway of the world has began a new age. In the 21st century, China's high-speed railway construction is running on a "high-speed train."However, the increase of train speed will trigger a series of aerodynamic issues which will not happen at low-speed. When a train pass through the tunnel at a high speed, there will be a clear pressure fluctuation and micro-pressure wave, which in turn affect passengers' travelling comfort, safety of the shuttle and tunnel environment. Preliminary studies show that ancillary facilities such as buffer, decompression shaft, accessorial tunnel, etc. can significantly reduce the peak of the first wave, thereby reducing Air parameters like pressure fluctuations, micro-pressure wave intensity to improve the safety degrees of high-speed railway.This paper is based on a research project. It focus on researching the impact on laws of the pressure propagation in high-speed railway tunnel and station with PSD system, when the station is between the two tunnels. And verifies whether the peak of the first compression wave, the value of pressure fluctuations, and other aerodynamic value is in limits; it also gives the corresponding conclusions; provide a basis for the follow-up design, traffic safety organizations.This paper combines scientific methods of numerical simulation and model test, to achieve the objective of the mutual authentication. It gives out clearly the laws how the pressure wave propagates in underground stations with PSD system, to provide a certain value for research and production in the future.