杨轸，潘晓东
摘 要:
公路线形质量对行车的舒适性和安全性有着非常重要的影响，如何合理有效地对其进行评价是一个有待解决的问题。从驾驶员行车时接受道路信息的角度出发，提出了道路特征信息变化率的概念，并作为评价公路线形质量的定量指标运用到平面线形、纵断面线形和平纵组合的评价研究中。研究表明：平曲线半径越小，驾驶员接受的道路特性信息变化率越大，驾驶员负担也越重；此外，平曲线长度、竖曲线半径及平纵组合都对道路特性信息变化率有较大的影响。研究成果可为改善公路线形，提高行车安全提供依据。[著者文摘]
关键词:公路线形 道路特征信息变化率 定量评价 行车安全
Highway Alignment EvaluationBased on Road Characteristic Information Variation
YANG Zhen, PAN Xiao-dong, FANG Shou-en, GUO Zhong-yin
- Key Laboratory of Road and Traffic Engineering of theMinistry of Education, Tongji University, Shanghai 200092, China; 2. ShanghaiMunicipal Engineering Design Institute, Shanghai 200092, China
Abstract:
Highway alignment has great effect on driving comfort and safety, and howto evaluate it needs to be solved. The concept of change rate of roadcharacteristic information （CRRCI） is proposed based on drivers＂ reception to roadinformation while driving. As a quantitative index for highway alignmentevaluation, it is applied to research on evaluating the quality of horizontalalignment, vertical alignment and combination alignment. It is proved that thesmaller radius of horizontal alignment, the larger CRRCI received by driver,and the heavier burthen pressed on driver. Further more, the length ofhorizontal alignment, the radius of vertical curve and mode of combinationalignments have effect on CRRCL The result can be used to improving highwayalignment and increasing driving safety.[著者文摘]
Key words:
highway alignment; change rate of road characteristic information （CRRCI）; evaluation index;driving safety