A Choice Between The Platform Screen Door Systerms Of Intercity Train’s Underground Station And Tunnel Ventilation Research

With the rapid development of the world economy, science and technology, and the rapid growth of urban population, the traffic pressure between cities is also becoming stronger and stronger. Intercity railway is a passenger dedicated line of high-density, regulation, convenience, high-speed, comfort and high-quality in a certain area, taking a single or multiple central cities as its core.The shape and structure of intercity train underground station is similar to that of the subway station. Therefore, the environmental control systems and ventilation air conditioning systems of intercity train are basically designed with reference to the standards of the subway. However, due to the great differences in operating characteristics between the intercity train and subway, we can not apply the methods of subway research to analyzing intercity train completely.This paper takes Zhuzhou-Xiangtan Intercity Express as an example. For the different working conditions of the normal operation of the intercity train, the PSD system model and security door system model are established respectively, and with the methods of one-dimensional and three-dimensional numerical analysis, simulation calculation of the two models is conducted. According to the comparison of the distribution of the temperature field, velocity field, and the air-conditioning energy consumption in the station of the two models, a comprehensive analysis of the comfort of tunnel and station is achieved, and ultimately, a choice is made between PSD and security door.This paper also involves the research of the influence of the different arrangement styles of the piston air shaft on the temperature field and velocity field of PSD system. Through comparison and analysis, optimization suggestions are proposed; this paper focuses on the ventilation conditions of train when blocked in the tunnel, analyzes the ventilation mode and airflow distribution in the tunnel, and provides a reference scheme for the ventilation in blocking conditions.