摘要
为解决各种道路条件下中央分隔带防眩植物高度设置统一而引发的一些路段防眩效果较差的问题,基于道路平纵横线形组合的不同特征,考虑超高、曲率和纵坡等不同因素单独或组合的影响,根据车型选择最不利位置作为特征点;利用空间几何和平面线形理论,研究不同路段任意桩号中央分隔带防眩植物高度的计算方法;利用计算机建立仿真模型,求解各桩号防眩植物的有效高度。研究结果表明:不同的平纵组合,最不利特征点的位置不同;不同桩号的中央分隔带防眩植物的高度也不同;可为改进道路绿化设计提供帮助,为交通安全评价提供技术支撑。
In order to solve the bad effects of antiglare in some road sections which were caused by the setting height of median strip plants, this paper, based on the different characteristics of the combination of road flat, vertical and horizontal-shaped alignments, considered the effects of super elevation, curvature, longitudinal slope and other factors alone or combination, and selected the most unfavorable position as feature points according to the vehicle models. Through spatial geometry and horizontal alignment theory, the calculating method was put forward, which was about the antiglare plants height on median strip in different sections and each station antiglare. Simulation model was established by using computer to solve the effective height of each station glare plant. The results show that the position of the most unfavorable feature points is different with different combinations of horizontal and vertical alignments, and the height antiglare plants on median strip is also different in different station antiglare. This paper is helpful to improve the road greening design, and provides technical support for safety appraisal. 1 tab, 6 figs, 13 refs.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2015年第4期27-31,共5页
Journal of Chang’an University(Natural Science Edition)
基金
国家科技支撑计划项目(2009BAG13A03)
关键词
道路工程
中央分隔带
防眩植物
高度计算
安全评价
road engineering
median strip
antiglare plant
height calculation
safety appraisal
