时速350 km高速铁路半地下车站气动效应影响研究  

Study on Influence of Aerodynamic Effect on Semi-underground Station of High-speed Railway with 350 km/h

作　　者：蒋尧[1] 李奎[1] 胡炜[1] 谭信荣[1] JIANG Yao;LI Kui;HU Wei;TAN Xinrong(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,Sichuan,China)

机构地区：[1]中铁二院工程集团有限责任公司,四川成都610031

出　　处：《隧道建设（中英文）》2020年第S01期187-193,共7页Tunnel Construction

摘　　要：为评估越站列车高速(350 km/h)通过半地下车站时气动效应对车站内、外环境的影响,为车站及连接隧道的设计提供参考。利用重叠网格技术建立高速铁路半地下车站气动效应计算模型,分析单车上行、单车下行、全地下段会车、半地下段会车等工况下站台区域的空气压力及风速、站外微气压波变化规律。结果表明:1)全地下段比半地下段的压力波动剧烈;2)单车上行工况,全地下段站台区域压力波动最剧烈,其压力波动峰值、瞬变压力峰值均最大,但均小于评价标准;3)全地下段会车工况,站台区域的风速最大,最大风速未超过5.0 m/s;4)上行列车通过时,在全地下段和半地下段交界处附近产生微气压波,50 m范围内有建筑物时需考虑微气压波的影响。In order to evaluate the influence of aerodynamic effect on internal and external environment of station when train passes through the semi-underground station with speed of 350 km/h,and provide a reference for the design of station and connection tunnel,the variation rules of air pressure,wind speed in the platform area and micro pressure wave outside the station are studied by the computational model of aerodynamic effects built by overset mesh technology under the working conditions of up-going,down-going,all-underground section and semi-underground section.The results show that:(1)The pressure fluctuation degree of underground area is more severe than that of semi-underground area.(2)Under the condition of up-going,the pressure fluctuation of underground platform area is the most severe and the peak value of pressure fluctuation and transient pressure reaches maximum,but both are less than the evaluation standard.(3)Under the condition of all-underground section,wind speed of platform area reaches maximum,but the maximum wind speed does not exceed 5.0 m/s.(4)When the up train passes through,micro pressure wave will be generated near junction of underground section and semi-underground section,and the buildings within 50 m should consider the influence of micro pressure.

关 键 词：高速铁路 半地下车站 气动效应 瞬变压力 列车风 微气压波 

分 类 号：U451.3[建筑科学—桥梁与隧道工程]