护栏对高速公路整体式路堤风吹雪的影响  

Impact of guardrails on wind-driven snow in integral highway embankments

作　　者：任来鹏 杨锋 马壮 REN Laipeng;YANG Feng;MA Zhuang(Jilin Traffic Planning and Design Institute,Changchun 130000,China)

机构地区：[1]吉林省交通规划设计院,长春130000

出　　处：《低温建筑技术》2024年第11期58-62,共5页Low Temperature Architecture Technology

基　　金：吉林省交通运输厅科技计划项目(攻关类)《吉林省公路风吹雪防治技术研究》(2021-1-4)。

摘　　要：为研究波形梁护栏和缆索护栏对高速公路整体式路堤全断面风吹雪灾害的影响,以高速公路27 m宽整体式路堤断面为例,采用Ansys Fluent仿真模拟软件,建立路基和护栏模型,分别对不同位置、不同护栏形式下的整体路堤断面风速流场结构进行仿真模拟,通过风速流场特性分析积雪位置,并与吉林省高速公路现场调研情况进行比较。结果表明整体式路堤断面只有路侧和中央分隔带同时设置缆索护栏才不会造成路面积雪,其他情况均会造成不同位置的路面积雪。研究成果可为风吹雪地区整体式路堤断面护栏设置提供参考依据。To study the impact of wavy beam guardrails and cable guardrails on wind-driven snow disasters in the full cross-section of integral highway embankments,this research uses a 27 m wide integral highway embankment cross-section as a case study.Ansys Fluent simulation software is employed to establish models of the subgrade and guardrails.Simulations are conducted on the wind speed flow field structure of the integral embankment cross-section under different guardrail types and positions.By analyzing the characteristics of the wind speed flow field,the locations of snow accumulation are identified and compared with field survey data from highways in Jilin Province.The results indicate that snow accumulation on the road surface only occurs when cable guardrails are simultaneously installed on the roadside and central separation zone;all other configurations result in snow accumulation in various positions on the road surface.The findings provide a reference for the placement of guardrails on integral highway embankment cross-sections in wind-driven snow regions.

关 键 词：风吹雪 高速公路护栏 整体式路堤 风速流场结构 

分 类 号：TU312[建筑科学—结构工程]