摘要
道路风吹雪灾害是雪灾害地区重要的灾害类型,对交通出行等造成很大威胁。该文以二维路堤为研究对象,通过Fluent软件对不同边坡坡度下的路堤进行流场模拟,得到了不同边坡坡度下路堤周围的风速和壁面剪切速度,进而从雪颗粒运动机理上分析边坡坡度对路堤周围积雪分布的影响。结果表明:路堤周围的流场与路堤表面的剪切速度有很好的对应关系;较缓的迎风边坡可减少路堤周围的积雪,在风吹雪灾害频发的地区进行道路建设时建议选取小边坡坡度的路堤;研究结果可为路堤的工程建设提供参考。
Road snowdrift disaster is an important disaster type in snow disaster areas,which poses a great threat to transportation.This paper takes the two-dimensional embankment as the research object,and uses Fluent software to simulate the flow field of embankments under different slopes,so that to obtain the wind speed and wall shear velocity around embankment under different slopes.And then the influence of slope on snow distribution around embankment is analyzed according to the mechanism of snow particle motion.The results show that the flow field around the embankment is closely related with the shear velocity of the embankment surface;the gentle upwind slope can reduce the snow around the embankment.It is recommended to build roads on the embankment with a small slope in areas with frequent snowdrift disaster.The research results can provide a reference for the construction of embankment.
作者
何书勇
冯耀恒
周一航
王熙
李海飞
刘庆宽
HE Shu-yong;FENG Yao-heng;ZHOU Yi-hang;WANG Xi;LI Hai-fei;LIU Qing-kuan(School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province,Shijiazhuang 050043,China;Wind Engineering Research Center,School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)
出处
《工程力学》
EI
CSCD
北大核心
2021年第S01期178-183,共6页
Engineering Mechanics
基金
国家自然科学基金面上项目(51778381)
河北省自然科学基金重点项目(E2018210044)
河北省高端人才(冀办[2019]63号)
河北省研究生创新资助项目(CXZZSS2020065)
石家庄铁道大学研究生创新资助项目(YC2020016)。
关键词
风吹雪
路堤边坡坡度
数值模拟
风速分布
剪切速度
snowdrift
embankment slope
numerical simulation
wind speed distribution
shear velocity
