云南某高速公路中分带视距分析及改善措施  

Analysis and Improvement Measures of the Median Strip Sight Distance of a Highway in Yunnan Province

作　　者：彭怡[1] 徐大伟 田毕江 程永伟[1] PENG Yi;XU Dawei;TIAN Bijiang;CHENG Yongwei(Faculty of Environmental Engineering,Kunming Metallurgy College,Kunming 650033,China;Broadvision Engineering Consultants,Kunming 650011,China)

机构地区：[1]昆明冶金高等专科学校环境工程学院,云南昆明650033 [2]云南省交通规划设计研究院,云南昆明650011

出　　处：《昆明冶金高等专科学校学报》2018年第5期68-72,共5页Journal of Kunming Metallurgy College

摘　　要：在设计及运营过程中,许多高速公路的右转方向路侧横净距普遍能满足要求,但左转方向中央分隔带却往往存在停车视距不足的问题,且未引起高速公路管理部门的足够重视。为了解决此类问题,以云南省某高速公路改扩建工程为例,采用横净距计算法及视距包络图对植物防眩和防眩板防眩方式下的中分带视距进行验算,分析高速公路中央分隔带左转视距不足的问题,并提出相应的工程对策,包括调整线形指标、增加中分带宽度、采取速度控制措施、改变防眩方式等,供类似项目参考。In the process of design and operation of highways,the right lateral clear distance can generally meet the requirement of sight distance,but the left lateral clear distance may not during parking because of the impediment from median strips,which therefore,needs corresponding attention from highway management administrations.To solve problem of this kind,the paper has taken the construction project of a highway in Yunnan Province as an example.Lateral clear distance calculation method and the sight distance envelope diagram are used to check the median strip sight distance in the anti-glare plants and anti-plates.This paper analyzes the shortage of the design of median strips on divided highways and the left sight distance impediments,and puts forward corresponding engineering measures for reference for similar projects,including adjusting the alignment indicator,increasing the width of the median strips,adopting speed control measures,and changing the way of anti-glare,etc.

关 键 词：高速公路 中分带视距 横净距 防眩方式 

分 类 号：TU99[建筑科学—市政工程]