交通运输研究2016，Vol.2Issue(4)：45-53,9.DOI:10.16503/j.cnki.2095-9931.2016.04.007
青藏高原地区空气氧含量对大、小车运行速度差的影响
Influence of Oxygen Content on Driving Speed Difference in Tibet Plateau
摘要
Abstract
In order to study the influence of oxygen content on driving speed difference in Tibet Pla⁃teau, some driving speed data of sections on National Road No.109 were collected using MetroCount de⁃vices. The data of 3 tangent sections, 2 horizontal curve sections and 2 longitudinal gradient sections un⁃der different oxygen contents were selected for statistical analysis. A regression model was established based on the result of this statistical analysis. It shows that the speed difference of truck and car increas⁃es as the oxygen content on tangent sections decreases; the increased value curve is flat when oxygen content ranges from 50%to 55%;the speed difference finally remains stably around 20km · h-1. In the same oxygen content, the speed difference on horizontal curve sections and longitudinal gradient sec⁃tions would increase compared with that on tangent sections. The former is more significant under low ox⁃ygen content and the latter is more obvious under high oxygen content. Results show that the speed dif⁃ference of truck and car partly has negative correlation with the oxygen content in the air.关键词
交通工程/运行速度/氧含量/速度差/统计分析/青藏高原Key words
traffic engineering/driving speed/oxygen content/speed difference/statistical analysis/Tibet plateau分类
交通工程引用本文复制引用
冯丙丙,孙小端,贺玉龙,曲桂娴..青藏高原地区空气氧含量对大、小车运行速度差的影响[J].交通运输研究,2016,2(4):45-53,9.基金项目
国家科技支撑计划项目 （）
