Optimized Design And Selection Of Cold Wind Resistant Door Buckets For High Speed Rail Stations In Cold Regions

With the development of China’s railroad industry,the number of high-speed railway station buildings has increased year by year,so travel has become the main mode of travel for the public,and the energy consumption and comfort of high-speed railway stations have also received greater attention.As a typical tall space,high speed railway station has a high flow of people and the entrance door is frequently opened during operation,so the cold air intrusion phenomenon and indoor air pollution problem in the entrance of the station in winter will be more serious than other tall space buildings.In this study,the cold wind resistance of the door bucket of high-speed railway stations in cold regions is optimized by combining active and passive methods in stages,and the corresponding haze removal performance is calculated by wind environment simulation results.The FLUENT simulation platform is used to simulate and compare the wind performance improvement laws in different stages of spatial parameters,components,and active operation,and then select the door bucket form with the best cold wind resistance.Firstly,based on the drawing analysis and field research of high speed railway stations in cold areas,the design parameter size interval and change step of door bucket space are determined,and three new door bucket plane forms are proposed according to the gas flow law,and the sample model of cold wind resistant door bucket for each spatial parameter is obtained by enumeration method.The optimal selection strategy based on the degree of influence of the parameters and the best combination of parameters for the anti-cold wind effect of different door bucket plan forms are obtained.Secondly,the optimized door bucket form in the spatial parameter optimization stage is used as the sample model in the component optimization stage,and the unfavorable wind environment area in the door bucket space is optimized with targeted components,and the excessive flow velocity in the door bucket caused by the attached jet and buoyancy drive is alleviated by increasing the flow damping of the air guide and roof components.The strategy is to provide a reference for energy-saving renovation.Finally,based on the optimally selected door bucket form in the first two stages,and combined with the research results of human behavior in the door bucket space of the high-speed railway station,the active strategy of automatic door control is applied to further improve the windproof performance of the door bucket,and the energysaving potential of the door bucket is quantified by heat consumption calculation.This provides architects with a basis for optimizing the selection of cold wind resistant door buckets for high-speed railway stations in the schematic design phase and the energysaving renovation phase,and enables them to make targeted optimization recommendations to architects at different stages of building design.