2024 02 v.35 197-202+221
隧道分岔形式对分流局部通风阻力特性的影响
基金项目(Foundation):
陕西省自然科学基础研究计划项目(No.2023-JC-YB-378);
浙江省建设科研项目(No.2020K121);
宁波市交通运输科技计划项目(No.202113)
邮箱(Email):
zhukai@cjlu.edu.cn;wuke@zju.edu.cn;
DOI:
中文作者单位:
中国计量大学能源环境与安全工程学院;浙江大学平衡建筑研究中心;西安石油大学电子工程学院;浙江省地矿建设有限公司;
摘要(Abstract):
目的:随着城市建设水平和强度提高，带匝道的分岔隧道日趋增多。针对分岔隧道通风设计难题，亟待获取隧道分岔形式对分流局部通风阻力特性的影响规律。方法:通过搭建同步满足阻力和压力相似的1/13缩尺分岔隧道通风试验平台，构建分岔隧道三维CFD模型，探究了分岔隧道不同分岔形式气流的流动特征和局部阻力系数，并进一步分析了分流结构与减速车道等隧道分岔形式特征对局部阻力系数的影响。结果:表明主线与匝道局部阻力系数随分流比增大呈现先减小后增大的趋势，且在分流比为0.4时达到最小。平行分岔隧道相比定向分岔隧道，主线局部阻力系数差别不大，而匝道局部阻力系数存在较明显的差异，分流比较小时，平行分岔隧道匝道局部阻力更大，分流比较大时则相反。增设减速车道，分流比较小时会减小匝道局部阻力系数，但会增加主线局部阻力系数，分流比较大时则相反。结论:研究结果可为分岔隧道的通风设计提供参考。
关键词(KeyWords):
局部阻力;隧道工程;分流;计算流体动力学模拟;缩尺试验;平行匝道
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参考文献
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[3] MENG Q,QU X B,WANG X C,et al.Quantitative risk assessment modeling for nonhomogeneous urban road tunnels[J].Risk Analysis,2011,31(3):382-403.
[4] TAN Z,GAO H.Traffic control for air quality management and congestion mitigation in complex urban vehicular tunnels[J].Transportation Research Part C:Emerging Technologies,2015,58:13-28.
[5] 宋夕雨，阳东，陈建忠.多匝道隧道纵向排烟分区划分与风机匹配计算[J].中国安全科学学报，2020,30(5):136-142.SONG X Y,YANG D,CHEN J Z.Longitudinal smoke exhaust zone division and fan matching calculation for multi-ramp tunnel[J].China Safety Science Journal,2020,30(5):136-142.
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[7] 吴珂，朱凯，谭真，等.城市隧道纵向通风延迟效应的机理研究及影响因素分析[J].现代隧道技术，2014,51(5):139-144,149.WU K,ZHU K,TAN Z,et al.On the deformation law of longitudinal joints of shield tunnel segment rings[J].Modern Tunnelling Technology,2014,51(5):139-144,149.
[8] ZHANG X,ZHANG T H,HOU Y G,et al.Local loss model of dividing flow in a bifurcate tunnel with a small angle[J].Journal of Zhejiang University-Science A (Applied Physics & Engineering),2019,20(1):21-35.
[9] WANG X,WANG M,QIN P,et al.An experimental study on the influence of local loss on ventilation characteristic of dividing flow in urban traffic link tunnel[J].Building and Environment,2020,174:106793.
[10] 吴舒星，张凯，周炜，等.CFD仿真的湿式除尘器流场均匀性的优化设计[J].中国计量大学学报，2016,27(3):301-305.WU S X,ZHANG K,ZHOU W,et al.Simulation and optimization of wet electrostatic precipitator air distribution based on numerical simulation[J].Journal of China University of Metrology,2016,27(3):301-305.
[11] 黄志，朱凯，王强，等.横向火源下纵向通风隧道火灾烟气蔓延特性的研究[J].中国计量大学学报，2023,34(1):126-133,162.HUANG Z,ZHU K,WANG Q,et al.Study on smoke control of tunnel fires under a transverse fire source[J].Journal of China University of Metrology,2023,34(1):126-133,162.
[12] 石喜，陶虎，柴媛媛，等.UPVC斜三通阻力损失及流动特征数值模拟[J].中国农村水利水电，2018(11):170-174.SHI X,TAO H,CHAI Y Y,et al.Numerical simulation of resistance loss and flow characteristics on UPVC slope tee pipes[J].China Rural Water and Hydropower,2018(11):170-174.
[13] 张欣，张天航，黄志义，等.分叉隧道分流局部损失特性及流动特征[J].浙江大学学报(工学版),2018,52(3):440-445.ZHANG X,ZHANG T H,HUANG Z Y,et al.Local loss characteristics and flow characteristics of bifurcation tunnel diversion[J].Journal of Zhejiang University (Engineering Edition),2018,52(3):440-445.
基本信息:
DOI：
中图分类号:U453.5
引用信息:
[1]朱凯,胡会平,张欣等.隧道分岔形式对分流局部通风阻力特性的影响[J].中国计量大学学报,2024,35(02):197-202+221.
基金信息:
陕西省自然科学基础研究计划项目(No.2023-JC-YB-378); 浙江省建设科研项目(No.2020K121); 宁波市交通运输科技计划项目(No.202113)