路侧示警桩设置关键指标研究

Study on Setting of Key Indicators for Roadside Warning Piles

针对公路示警桩的反光膜搭配、外观设计参数缺乏技术规范的问题,开展实车试验,研究、论证了相关参数对于路侧示警桩夜间诱导效果的影响。以我国低等级公路示警桩的两种主要形式:用于接入口警示功能的红白相间示警桩、用于公路线形轮廓诱导功能的黄黑相间示警桩为试验对象,以车辆进入弯道前的减速点位置、减速过程平稳性作为判别指标,基于试验场实车试验,采用数理统计与相关性分析方法,得到两种形式示警桩的反光膜配置、外观设计参数等关键指标最优化量值。同时,考虑低等级公路资金受限的问题,提出了相应的低成本解决方案。研究表明:红白相间示警桩的诱导效果主要与白色单元反光膜的反光性能有关,白色反光膜的等级越高,诱导效果越好,在资金受限时仅在最上一道白色单元设置I类反光膜也可达到不错的警示效果;黄黑相间示警桩诱导效果最优的形式为自顶部黑、黄颜色单元交替等比例设置,黑色单元在黄色单元之上的形式,此时黄色部分宜采用Ⅱ类反光膜。在资金受限时,仅在顶部黄色单元设置I类黄色反光膜也可达到不错的诱导效果。研究成果可为我国低等级公路交通诱导设施的设置提供依据。

Aiming at lack of technical specification of reflective film matching and styling design for road warning piles, the influence of relevant parameters on night induction effect of road-side warning piles are studied and discussed by real vehicle tests. Two types of warning piles commonly used on national roads are selected as the experimental object: one is alternate red and white warning pile which is used for warning function at access spots, the other is alternate yellow and black warning pile which is used for induction function of road side profile. Taking deceleration spot before vehicle entering into curve and smoothness of deceleration process as the judgment indicators, based on the real vehicle test in proving ground, the optimal parameter values of reflective film matching and styling design for road warning piles are obtained using mathematical statistics and correlation analysis. Meanwhile, considering the low budget of low class highway, the corresponding low cost solution is proposed. The result indicates that(1) The induction effect of alternate red and white warning piles is mainly related to the reflective property of the reflective film. The higher the reflective film class of white part, the better the induction effect. When the funds are limited, retro reflective film Type I can be set up only on the top white part for good warning effect.(2) The form of alternate black and yellow warning pile which has optimal induction effect is that the black and yellow parts are alternatively arranged from top with the equal width, and reflective film Type II is suitable for yellow part. When the funds are limited, reflective film Type I can be set up only on the top yellow part for good warning effect. The result can provide a basis for the establishment of traffic guidance facilities on low class highways in China.