地铁活塞风井及迂回风道速度场特性研究  

Velocity Fields Characteristics Research on the Piston Air Shaft and the Bypass Duct in Subway

作　　者：王丽慧[1] 施逵[2] 宋洁 郑懿 

机构地区：[1]上海理工大学,上海200093 [2]上海市隧道工程轨道交通设计研究院,上海200070 [3]上海申通轨道交通研究咨询有限公司,上海201103

出　　处：《流体机械》2010年第3期22-27,16,共7页Fluid Machinery

基　　金：国家自然科学基金资助项目(50908147);上海市教委重点学科建设资助项目(J50502);上海高校选拔培养优秀青年教师科研专项基金项目(slg-07026);上海市大学生创新活动项目(建筑能耗现场测试方法的实验研究)

摘　　要：通过理论建模,引入活塞风井分流比重和吸风比重的重要参数,得到活塞风井风速与车速呈线性正比例关系,并分析了影响活塞风井速度场的主要因素;由现场实测和数值模拟分析得到分流活塞风井和分流迂回风道的最大风速均分别大于吸风风井和吸风风道。通过数值模拟知活塞风井横截面积变化对区间和车站各单元速度场影响明显,改变活塞风井横截面积是调节活塞风对车站环控影响效果的重要手段。Through theoretical modeling, division ratio and suction ratio are introduced as important parameters. It is concluded that the piston air shaft velocity is linearly proportional to the vehicle speed. The main factors impacting the piston air shaft velocity field are analyzed. From the field measurement and the numerical simulation, the maximum velocities in the divisional piston air shaft and bypass duct are respectively higher than the sectional shaft and duct. By numerical simulation, the cross-sectional area of the piston air shaft has a significant effect on the velocity fields of the tunnel and the subway station. Thus, regulation the piston air shaft cross-sectional area is one of useful methods to control the influence of the piston wind on subway environment.

关 键 词：活塞风井 迂回风道 分流比重 吸风比重 

分 类 号：TU834[建筑科学—供热、供燃气、通风及空调工程]