铁道标准设计2024，Vol.68Issue(8)：137-144,8.DOI:10.13238/j.issn.1004-2954.202406030002
城际列车过站对屏蔽门风压荷载影响规律研究
Research on the Influence of Wind Pressure Load on Platform Screen Doors Caused by Intercity Train Passing Through Stations
摘要
Abstract
The wind pressure caused by the high-speed passage of intercity railway trains applies a significant load on the platform screen doors,to ensure the safe of the platform screen doors and achieve reasonable design and construction goals,it is necessary to explore the distribution law and mechanism of wind pressure load on the platform screen doors first.Using Fluent software,RNG k-ε turbulence model was selected,and the control equations were discretized by finite volume method,the second-order upwind scheme and center difference scheme were used to solve the convective and diffusive fluxes,the influence of wind pressure load on platform screen doors caused by intercity train passing through stations was studied.The research results indicates:When a train passes through a station at high speed,the increase in the ross-section area of the enclosed area allows the compressed air to dissipate faster,thereby reducing the wind pressure load on the platform screen doors and minimizing the extreme values of the wind pressure load on the doors;Before the train arrives at the platform screen door,the slight change in the retreat distance between the platform screen door and the platform edge has little effect on the extreme wind pressure load of the platform screen door;After the train arrives at the platform screen door,the airflow changes and distribution in the enclosed area become more severe and complex,the increase in cross-section area makes the wind pressure load of the platform screen door more significantly affected by the change in the retreat distance of the platform screen door;The increase in train passing speed will lead to an increase in the extreme wind pressure load on the platform screen doors;During the process of the train passing through the station,the maximum load at each point of the platform screen door decreases overall along the direction of the train's travel,however,as the speed of the train passing through the station increases,the minimum load(suction)near the end of the platform screen door in the direction of the train's travel tends to increase,and this phenomenon becomes more pronounced as the speed increases.关键词
城际铁路/地下车站/封闭式屏蔽门/风压荷载/净空面积/距站台边缘退距/列车过站速度Key words
intercity railway/underground station/closed platform screen doors/wind pressure load/cross-section area/retreat distance from the edge of the platform/train passing speed分类
交通工程引用本文复制引用
赵长久,彭斌..城际列车过站对屏蔽门风压荷载影响规律研究[J].铁道标准设计,2024,68(8):137-144,8.基金项目
中国工程院院地合作项目(2022-DFZD-10) （2022-DFZD-10）
