| 曲线公路隧道行车间距对活塞效应的影响研究 |
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| 引用本文： | 王峰,王明年,邓园也. 曲线公路隧道行车间距对活塞效应的影响研究[J]. 工程力学, 2011, 0(6): 195-199 |
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| 作者姓名： | 王峰 王明年 邓园也 |
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| 作者单位： | 四川大学建筑与环境学院;西南交通大学土木学院;西南交通大学学科处; |
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| 基金项目： | 交通部西部交通建设科技项目(200831800058); 西南交通大学博士研究生创新基金项目 |
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| 摘 要： | 结合正在建设的实际工程项目,采用数值计算方法对曲线隧道内行车间距及车速对活塞效应的影响进行分析.结果表明:汽车进入隧道和驶出隧道时,隧道断面平均风速明显增大;当汽车在隧道内行驶时,汽车与隧道壁面的环状空间及尾部内均出现了强烈的回流及涡流现象;行车间距的增加有利于提高汽车有效阻力系数,增强汽车产生的活塞效应.在相同的行车...
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| 关 键 词： | 曲线公路隧道 行车间距 数值模拟 活塞效应 车速 |
RESEARCH ON EFFECTS OF VEHICLE SPACE ON THE PISTON EFFECT IN A CURVED HIGHWAY TUNNEL |
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| WANG Feng,WANG Ming-nian,DENG Yuan-ye. RESEARCH ON EFFECTS OF VEHICLE SPACE ON THE PISTON EFFECT IN A CURVED HIGHWAY TUNNEL[J]. Engineering Mechanics, 2011, 0(6): 195-199 |
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| Authors: | WANG Feng WANG Ming-nian DENG Yuan-ye |
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| Affiliation: | WANG Feng1,WANG Ming-nian2,DENG Yuan-ye3(1.College of Architecture and Environment,Sichuan University,Chengdu 610065,China,2.Shool of Civil Engineering,Southwest Jiaotong University,Chengdu,Sichuan 610031,3.Section of Academic Development,China) |
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| Abstract: | Based on a real project under construction,a numerical method was carried out to analyze the influence of vehicle spaces and speed on the piston-effect in a curved tunnel.The results show that the average air speed on the cross-section in the tunnel improves significantly as the vehicle runs into and out of a tunnel.When vehicles are travelling in a tunnel,the strong backflow and a vortex can be found in the annular space between vehicles and tunnel walls,as well as the tail of vehicles.The increasing lengt... |
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| Keywords: | curved road tunnel vehicle space numerical simulation piston effect vehicle speed |
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