摘要
对高速公路两种半路堑路况进行Fluent数值模拟,分析风向夹角对半路堑积雪浓度的影响,得到半路堑积雪分布规律,为高速公路选线设计提供理论参考。结果表明:随风向夹角增大,背风半路堑积雪浓度整体为增加趋势,风向夹角为90°时积雪浓度最高,达到79.18 kg/m~3,形成严重的风积雪灾害;迎风半路堑整体浓度浮动趋势在5 kg/m~3以内,且积雪浓度在20 kg/m~3以下,不足以形成风积雪灾害。在风吹雪灾害频发地区进行高速公路选线设计时,应减小公路与主风向之间夹角,减少风吹雪灾害的发生。
Fluent numerical simulation was conducted on two types of half cut road conditions on highways to analyze the influence of wind direction angle on the concentration of snow accumulation in half cuts.The distribution pattern of snow accumulation in half cuts was obtained,providing theoretical reference for highway route selection and design.The results show that as the wind angle increases,the overall snow concentration in the leeward half of the road cutting shows an increasing trend.When the wind direction angle is 90°,the snow concentration is the highest,reaching 72.21 Kg/m 3,forming a serious wind snow disaster;The overall concentration fluctuation trend of the windward half cutting is within 5 Kg/m 3,and the snow concentration is below 20 Kg/m 3,which is not enough to form a wind snow disaster.When designing the route of highways in areas with frequent wind and snow disasters,the angle between the highway and the main wind direction should be reduced to reduce the occurrence of wind and snow disasters.
作者
李元博
张立群
石玉鑫
王雅超
吴磊
李少刚
蒋明学
朱晨
LI Yuanbo;ZHANG Liqun;SHI Yuxin;WANG Yachao;WU Lei;LI Shaogang;JIANG Mingxue;ZHU Chen(Hebei University of Architecture,Zhangjiakou,Hebei 075000)
出处
《河北建筑工程学院学报》
CAS
2024年第1期93-98,共6页
Journal of Hebei Institute of Architecture and Civil Engineering
关键词
风吹雪
迎风半路堑
背风半路堑
数值模拟
积雪分布规律
snow drift
windward half cut
leeward half cut
numerical simulation
distribution pattern of snow cover
