
文章端号:1000-033X(2016)12-0079-07
DESIGN AND TESTI设计与试验
高速公路防眩高度确定方法赵锡森,吴金海”,彭余华”,王江红”,段华勇
(1,昭通市大山包一级公路建设指挥部,云南昭通657000:2,中国路桥工程有限责任公司,北京
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3.长安大学公路学院·陕西西安710064)
摘
要:为了解决高速公路夜间行车时鲁速存在的强光炫目同题,通过分析车辆前照灯、驾人视
线和防眩板设置高度在道路横纵斯面上的投影关系,构建相应的计算模型,从而提出包含前后纵坡的凹形竖曲践路段防眩高度计算方法,与基于不同高速公路设计标准和位于中线与中央分隔带两侧的2种设置情形下的直线段最小防助高度,以及不需增加防助高度的即形竖曲线率径临界值查询表,可为相关施工提供借鉴
关键词:防眩板;儿何模型;防高度;设置位置
中图分类号:U412.36
文献标志码:B
Determination of Anti-glare Height of Expressway
ZHAO Xi-sen', WU Jin-hai°, PENG Yu-hua", WANG Jiang-hong", DUAN Hua-yong(1. Zhaotong Dashanbao Highway Construction Headquarters, Zhaotong 657000, Yunnan, China
2. China Road and Bridge Corporation, Beijing 100011, China; 3. School of Highway,
Chang’ an University, Xi'an 710064, Shaanxi, China)
Abstract: In order to resolve the problem of glare that is ubiquitous when driving at night on expressway, the projection relationship on cross section between vehicle headlamp, driver's line of sight and the height of anti-glare plate was analyzed ,and related calculation model was built. The calculation method of anti-glare height of concave vertical curve section including longitudinal slope was proposed. Minimum anti-glare height for straight line segments based on different highway design standards and two settings on both sides of the center line and center divider and look-up table for critical value of the radius of concave vertical curve without increasing of anti-glare height, provide reference for similar projects.
Key words: anti-glare plate; geometric model; anti-glare height; setting location
0引言
目前,高速公路的桥梁路段以及由于过窄、干早缺水等原因而难以植树的中央分隔带广泛采用防眩板来解决夜间对向行车的车灯强光眩目问间题。“高速公路交通工程及沿线设施设计通用规范3(JTG D80一2006)(以下简称规范3))规定直线路段防眩高度应为1.60~1.70m,平、纵线形组合路段防眩高度应为1.201.80m;公路交通安全设施设计细则3(JTG/TD81一2006)(以下简称《细则》)建议
防眩设施的高度不宜超过2m。实践表明,在平直线路段按照规定的1.60~1.70m高度设置防眩板仍存在上侧漏光问题,而在凹形竖曲线路段,处于高处的车前灯光高度亦会超过凹面路段较低处防眩板高度而造成眩光,
目前,国外道路防眩的研究大多是分析眩光对
交通安全的影响,并从光源体、传播路径及受光体3 方面采取措施削弱眩光影响。对于凹形竖曲线路段,Mok等提出在不同的道路线形条件下,防眩设施应采用不同的高度;Wang等研究了凹形竖曲线
收稿日期:2016-06-09
基金项目:云南省交通运输厅联合攻关科技项目(云交科教[2016]56号)
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