活塞风对地下平台颗粒物动态分布的影响分析  

Analysis of the Effect of Piston Wind on the Dynamic Distribution of Particulate Matter on Underground Platforms

作　　者：甘嵩 李慧星(指导)[1] 冯国会[1] 靳佳路 GAN Song;LI Huixing;FENG Guohui;JIN Jialu(Shenyang Jianzhu University,Shenyang 110168,China)

机构地区：[1]沈阳建筑大学,辽宁沈阳110168

出　　处：《建筑节能（中英文）》2024年第11期164-168,共5页Building Energy Efficiency

基　　金：国家自然科学基金重点项目“川藏铁路隧道热湿环境调控与火灾安全保障理论及方法”(52038009)。

摘　　要：随着地铁客流量的急剧增加,地铁乘车环境面临严重的污染问题。现有相关文献研究只注重地铁站台整体颗粒物平均浓度,局部位置颗粒物浓度研究较少。通过实测数据,分析地铁站台颗粒物分布规律,利用CFD模拟软件模拟分析列车进站时,活塞风产生的诱导气流对颗粒物分布特征影响。结果表明:随着列车进站,站台颗粒物浓度明显上升,不同位置颗粒物浓度动态变化规律有所不同。地铁站台在不同时空条件下的颗粒物浓度与屏蔽门上方风口诱导气流的变化存在一定的相关性,靠近列车进站一侧的颗粒物浓度偏高且变化较大。了解颗粒物浓度在不同位置的浓度变化,能够针对局部通风提出更好的颗粒物控制策略。Subways are facing serious pollution problems as passengers increase dramatically,causing air quality and population health issues that deserve extensive attention and research.Existing studies have predominantly focused on the average concentration of particles in metro stations.In contrast,this study investigates the dynamic distribution of particulate matter on underground platforms by measuring particle concentrations at different locations and times on the platform.Additionally,the study uses a three-dimensional computational model to simulate the effect of piston winds when a train enters a station.It was observed that the train generates strong disturbances in the tunnel,which push the piston wind and cause particles to spread on the platform and infiltrate stairs and ticket halls.The concentration of particulate matter is higher on the side of the platform closest to the arriving train,and the concentration varies due to the piston wind.

关 键 词：地铁站台 颗粒物 流体仿真 动网格 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]