西华大学学报（自然科学版）2025，Vol.44Issue(2)：60-69,10.DOI:10.12198/j.issn.1673-159X.5088
山区低等级公路急弯路段车辆纵向加速度特性
Longitudinal Acceleration Characteristics of Vehicles on Sharp Turns Section in Low Grade Highways of Mountainous Areas
摘要
Abstract
In order to clarify the longitudinal acceleration characteristics of the vehicle in the sharp bend section of the low-grade highway in the mountainous area,the section of the national Road G211 from Huadiwan to Dashuzi village was taken as the research object,and the real vehicle continuous driving test with a mileage of 9.7 km was carried out.The continuous data of longitudinal acceleration were collected,and the main distribution range of acceleration peak and deceleration valley in the curve and the mean char-acteristics of longitudinal acceleration and deceleration were analyzed.The correlation between average ac-celeration and acceleration length and the correlation between average deceleration and deceleration length were analyzed.The results show that the main distribution ranges of longitudinal acceleration peak and de-celeration valley in the uphill direction are 0.8～2.0 m/s2 and-1.6～-0.2 m/s2,respectively.In the downhill direction,the main distribution ranges are 0.4～1.2 m/s2 and-3～-1.8 m/s2,respectively.The peak value of longitudinal acceleration and the valley value of deceleration are mainly distributed at the transition curve.The average acceleration and acceleration length and the average deceleration absolute value are negatively correlated with the deceleration length.The research results of this paper can provide reference for the design of road safety facilities and traffic safety evaluation.关键词
交通安全/山区公路/回头曲线/急弯路段/纵向加速度Key words
traffic safety/mountain road/switch-back curve/sharp bend road section/longitudinal acceleration分类
交通运输引用本文复制引用
覃胜,于国岳,王芳菲,陈海源,徐进..山区低等级公路急弯路段车辆纵向加速度特性[J].西华大学学报（自然科学版）,2025,44(2):60-69,10.基金项目
重庆市自然科学基金面上项目(CSTB2022NSCQ-MSX1516) （CSTB2022NSCQ-MSX1516）
