基于停车视距约束的高速公路弯道声屏障设置可行性研究  

Feasibility study on setting noise barrier on curved expressway based on stopping sight distance constraint

作　　者：张诗波 王丽 杨雪峰 刘桥缘 骆勇[4] ZHANG Shibo;WANG Li;YANG Xuefeng;LIU Qiaoyuan;LUO Yong(School of Automobile and Transportation,Xihua University,Chengdu 610039,China;Xihua Jiaotong Forensic Center,Chengdu 610039,China;Traffic Police Corps of Sichuan Provincial Public Security Department,Chengdu 610037,China;Department of Transportation and Economic Management,Sichuan Vocational and Technical College of Communications,Chengdu 611130,China)

机构地区：[1]西华大学汽车与交通学院,成都610039 [2]四川西华交通司法鉴定中心,成都610039 [3]四川省公安厅交通警察总队,成都610037 [4]四川交通职业技术学院交通运输与经济管理系,成都611130

出　　处：《安全与环境学报》2023年第12期4299-4307,共9页Journal of Safety and Environment

基　　金：四川省科技厅重点研发项目(2022YFG0132);西华大学校重点项目(Z211005);四川省现代道路行车安全保障工程技术研究中心科研项目(2021-ZD-03)。

摘　　要：为探究高速公路弯道声屏障设置的可行性,基于横净距探究视距最差情况下弯道声屏障对停车视距的影响。通过HintCAD构建高速公路不同曲线类型、设计速度、车道数、圆曲线半径组合而成的曲线平面图模型,生成每种组合下平面图的视距包络图,共获得180组不同组合情况下的平曲线最大横净距。引入回归分析方法得到高速公路弯道路段满足不同停车视距约束的最大横净距与圆曲线半径之间的关系模型。根据关系模型和高速公路曲线路段实际横净距,计算出曲线路段加入声屏障后满足停车视距约束的最小圆曲线半径阈值,可用于判断曲线路段设置声屏障的可行性。In order to explore whether the curve sight distance of the expressway installing noise barriers can meet the stopping sight distance test,the influence of the curve noise barrier on stopping sight distance under the worst condition of sight distance is studied based on the lateral clear spacing.Firstly,the curve plane model composed of different curve types,design speed,number of lanes,and circular curve radius of the expressway was constructed by HintCAD.Then,the line-of-sight envelope diagram of the plane graph under each combination was generated,and the maximum lateral clear spacing values of the plane graph under 180 different combinations were obtained.Finally,the regression analysis method was introduced to obtain the power function relationship model between the maximum lateral clear spacing and the radius of the circular curve.The maximum lateral clear spacing satisfied the different stopping sight distance constraints of the expressway.According to the lateral clear spacing value of the expressway curve section,the minimum circular curve radius threshold that satisfied the stopping sight distance constraint after adding the noise barrier to the curve section was calculated.It can be seen from the obtained threshold that when the design speed is 120 km/h and 100 km/h respectively,and the radius of the circular curve of the curve is less than the general minimum radius of the circular curve adopted under normal conditions,the setting of the noise barrier causes the sight distance to not meet the required stopping sight distance;When the design speed is 80 km/h and the radius of the circular curve is less than the limit minimum radius of the circular curve with a superelevation of 4%,the installation of the sound barrier will lead to the risk of insufficient parking sight distance.According to the obtained minimum circular curve radius threshold,the feasibility of setting the curve noise barrier on the curve section is judged.If it is not feasible,corresponding improvement measures can be taken to improve

关 键 词：安全工程 声屏障 圆曲线半径 停车视距 最大横净距 

分 类 号：X593[环境科学与工程—环境工程]