Study On Subway Environment Of Shenyang Under The Bailout Door Systems

Along with the rapid development of subway system, and the pbomlem of that process paymore people’s attention. Due to the faster train’s speed and the expanded passenger capacitywhich make the increaseing in the speed of piston wind,resulted in the degradation of the stationenvironmental and passengers feel more uncomfortable. When the bailout door systems isapplied to the station,which can improve the waiting environment and ensure the quality ofridding.However, in northeast of China, because of climate conditions are unique and most citiesare in the progress of subway construction, which don’t have the reference for the design pattern,so there is need to select the best form of the bailout door according to the local conditions.Therefore, this paper take shenyang subway as an example to analyze the two bailout doorsystems for a certain research.The load of subway environmental control systems is affected by many factors. Firstly,basing on the analysis on the heat of subway station,this paper take the subway station of No.2line in Shenyang as the object to calculate,and analyze the proportion of each load, then theresults also provide powerful based data for the subsequent simulation.Secondly, on the basis of CFD simulation theory, a three-dimensional full-scale physicalmodel of Shenyang subway station which built by using Airpark to carry out the simulation ofthe thermal environment for two platform bailout door systems under the condtion of one trainpulls in and two train pull in simultaneously in summer and winter.And the research shows thecurve of temperature field and velocity field on typical transects of the station hall and the stationplatform at different time, such as the human head,stairs and entrance and exit. Through thecomparative analysis of that,we can get whole high bailout door is superior to half high bailoutdoor in comfort,which is more suitable for the climate features of Shenyang.Finally, to confirm the reliability of the model.,this paper compare the numerical results oftemperature with the experiment data which measured from NO.2line,discovered they arebasically consistent. In addition, a comprehensive evaluation of the applicability of thesystem,the temperature,speed field and the concentration field of the station is also stimulateunder the condition of the steady-state when the train stopping, and through the analysis onthermal comfort indexes of PMV-PPD,shows that the majority of the passengers in the stationfeel comfortable and PPD was less than10%.Basing on the comfort of people in the station,the optimum bailout door system forShenyang ia given by dynamic simulation.,and it can also provide reference and guidance for thedesign of subway environmental control system in Northeast.